id sid tid token lemma pos 36297 1 1 produced produce VBN 36297 1 2 from from IN 36297 1 3 images image NNS 36297 1 4 generously generously RB 36297 1 5 made make VBN 36297 1 6 available available JJ 36297 1 7 by by IN 36297 1 8 The the DT 36297 1 9 Internet Internet NNP 36297 1 10 Archive Archive NNP 36297 1 11 . . . 36297 1 12 ) ) -RRB- 36297 2 1 VISUAL VISUAL NNS 36297 2 2 ILLUSIONS illusion NNS 36297 2 3 _ _ IN 36297 2 4 THEIR their NN 36297 2 5 CAUSES cause NNS 36297 2 6 , , , 36297 2 7 CHARACTERISTICS CHARACTERISTICS NNP 36297 2 8 AND and CC 36297 2 9 APPLICATIONS application NNS 36297 2 10 _ _ NNP 36297 2 11 BY by IN 36297 2 12 M. M. NNP 36297 2 13 LUCKIESH LUCKIESH NNP 36297 2 14 DIRECTOR DIRECTOR NNP 36297 2 15 OF of IN 36297 2 16 APPLIED APPLIED NNP 36297 2 17 SCIENCE SCIENCE NNP 36297 2 18 , , , 36297 2 19 NELA NELA NNP 36297 2 20 RESEARCH RESEARCH NNP 36297 2 21 LABORATORIES LABORATORIES NNP 36297 2 22 , , , 36297 2 23 NATIONAL NATIONAL NNP 36297 2 24 LAMP LAMP NNP 36297 2 25 WORKS WORKS NNP 36297 2 26 OF of IN 36297 2 27 GENERAL GENERAL NNP 36297 2 28 ELECTRIC ELECTRIC NNP 36297 2 29 CO CO NNP 36297 2 30 . . . 36297 3 1 AUTHOR author NN 36297 3 2 OF of IN 36297 3 3 " " `` 36297 3 4 COLOR COLOR NNP 36297 3 5 AND and CC 36297 3 6 ITS its PRP$ 36297 3 7 APPLICATIONS application NNS 36297 3 8 , , , 36297 3 9 " " '' 36297 3 10 " " `` 36297 3 11 LIGHT light NN 36297 3 12 AND and CC 36297 3 13 SHADE SHADE NNS 36297 3 14 AND and CC 36297 3 15 THEIR their NN 36297 3 16 APPLICATIONS application NNS 36297 3 17 , , , 36297 3 18 " " '' 36297 3 19 " " `` 36297 3 20 THE the DT 36297 3 21 LIGHTING lighting NN 36297 3 22 ART art NN 36297 3 23 , , , 36297 3 24 " " '' 36297 3 25 " " `` 36297 3 26 THE the DT 36297 3 27 LANGUAGE language NN 36297 3 28 OF of IN 36297 3 29 COLOR COLOR NNP 36297 3 30 , , , 36297 3 31 " " '' 36297 3 32 " " `` 36297 3 33 ARTIFICIAL ARTIFICIAL NNP 36297 3 34 LIGHT light NN 36297 3 35 -- -- : 36297 3 36 ITS its PRP$ 36297 3 37 INFLUENCE influence NN 36297 3 38 UPON upon IN 36297 3 39 CIVILIZATION CIVILIZATION NNP 36297 3 40 , , , 36297 3 41 " " '' 36297 3 42 " " `` 36297 3 43 LIGHTING LIGHTING NNP 36297 3 44 THE the DT 36297 3 45 HOME home NN 36297 3 46 , , , 36297 3 47 " " '' 36297 3 48 ETC etc FW 36297 3 49 . . . 36297 4 1 100 100 CD 36297 4 2 ILLUSTRATIONS illustrations JJ 36297 4 3 NEW NEW NNP 36297 4 4 YORK YORK NNP 36297 4 5 D. D. NNP 36297 4 6 VAN VAN NNP 36297 4 7 NOSTRAND NOSTRAND NNP 36297 4 8 COMPANY COMPANY NNP 36297 4 9 EIGHT eight CD 36297 4 10 WARREN WARREN NNP 36297 4 11 STREET STREET NNP 36297 4 12 1922 1922 CD 36297 4 13 COPYRIGHT COPYRIGHT NNP 36297 4 14 , , , 36297 4 15 1922 1922 CD 36297 4 16 , , , 36297 4 17 BY BY NNP 36297 4 18 D. D. NNP 36297 4 19 VAN VAN NNP 36297 4 20 NOSTRAND NOSTRAND NNP 36297 4 21 COMPANY COMPANY NNP 36297 4 22 PREFACE PREFACE NNP 36297 4 23 Eventually eventually RB 36297 4 24 one one CD 36297 4 25 of of IN 36297 4 26 the the DT 36297 4 27 results result NNS 36297 4 28 of of IN 36297 4 29 application application NN 36297 4 30 to to IN 36297 4 31 the the DT 36297 4 32 analysis analysis NN 36297 4 33 and and CC 36297 4 34 measurement measurement NN 36297 4 35 of of IN 36297 4 36 the the DT 36297 4 37 phenomena phenomenon NNS 36297 4 38 of of IN 36297 4 39 light light NN 36297 4 40 , , , 36297 4 41 color color NN 36297 4 42 , , , 36297 4 43 lighting lighting NN 36297 4 44 , , , 36297 4 45 and and CC 36297 4 46 vision vision NN 36297 4 47 is be VBZ 36297 4 48 a a DT 36297 4 49 firmly firmly RB 36297 4 50 entrenched entrenched JJ 36297 4 51 conviction conviction NN 36297 4 52 of of IN 36297 4 53 the the DT 36297 4 54 inadequacy inadequacy NN 36297 4 55 of of IN 36297 4 56 physical physical JJ 36297 4 57 measurements measurement NNS 36297 4 58 as as IN 36297 4 59 a a DT 36297 4 60 means means NN 36297 4 61 for for IN 36297 4 62 representing represent VBG 36297 4 63 what what WP 36297 4 64 is be VBZ 36297 4 65 perceived perceive VBN 36297 4 66 . . . 36297 5 1 Physical physical JJ 36297 5 2 measurements measurement NNS 36297 5 3 have have VBP 36297 5 4 supplied supply VBN 36297 5 5 much much JJ 36297 5 6 of of IN 36297 5 7 the the DT 36297 5 8 foundation foundation NN 36297 5 9 of of IN 36297 5 10 knowledge knowledge NN 36297 5 11 and and CC 36297 5 12 it -PRON- PRP 36297 5 13 is be VBZ 36297 5 14 not not RB 36297 5 15 a a DT 36297 5 16 reflection reflection NN 36297 5 17 upon upon IN 36297 5 18 their -PRON- PRP$ 36297 5 19 great great JJ 36297 5 20 usefulness usefulness NN 36297 5 21 to to TO 36297 5 22 state state VB 36297 5 23 that that IN 36297 5 24 often often RB 36297 5 25 they -PRON- PRP 36297 5 26 differ differ VBP 36297 5 27 from from IN 36297 5 28 the the DT 36297 5 29 results result NNS 36297 5 30 of of IN 36297 5 31 intellectual intellectual JJ 36297 5 32 appraisal appraisal NN 36297 5 33 through through IN 36297 5 34 the the DT 36297 5 35 visual visual JJ 36297 5 36 sense sense NN 36297 5 37 . . . 36297 6 1 In in IN 36297 6 2 other other JJ 36297 6 3 words word NNS 36297 6 4 , , , 36297 6 5 there there EX 36297 6 6 are be VBP 36297 6 7 numberless numberless JJ 36297 6 8 so so RB 36297 6 9 - - HYPH 36297 6 10 called call VBN 36297 6 11 visual visual JJ 36297 6 12 illusions illusion NNS 36297 6 13 which which WDT 36297 6 14 must must MD 36297 6 15 be be VB 36297 6 16 taken take VBN 36297 6 17 into into IN 36297 6 18 account account NN 36297 6 19 . . . 36297 7 1 All all DT 36297 7 2 are be VBP 36297 7 3 of of IN 36297 7 4 interest interest NN 36297 7 5 ; ; : 36297 7 6 many many JJ 36297 7 7 can can MD 36297 7 8 be be VB 36297 7 9 utilized utilize VBN 36297 7 10 ; ; : 36297 7 11 and and CC 36297 7 12 some some DT 36297 7 13 must must MD 36297 7 14 be be VB 36297 7 15 suppressed suppress VBN 36297 7 16 . . . 36297 8 1 Scientific scientific JJ 36297 8 2 literature literature NN 36297 8 3 yields yield VBZ 36297 8 4 a a DT 36297 8 5 great great JJ 36297 8 6 many many JJ 36297 8 7 valuable valuable JJ 36297 8 8 discussions discussion NNS 36297 8 9 from from IN 36297 8 10 theoretical theoretical JJ 36297 8 11 and and CC 36297 8 12 experimental experimental JJ 36297 8 13 viewpoints viewpoint NNS 36297 8 14 but but CC 36297 8 15 much much JJ 36297 8 16 of of IN 36297 8 17 the the DT 36297 8 18 material material NN 36297 8 19 is be VBZ 36297 8 20 controversial controversial JJ 36297 8 21 . . . 36297 9 1 The the DT 36297 9 2 practical practical JJ 36297 9 3 aspects aspect NNS 36297 9 4 of of IN 36297 9 5 visual visual JJ 36297 9 6 illusions illusion NNS 36297 9 7 have have VBP 36297 9 8 been be VBN 36297 9 9 quite quite RB 36297 9 10 generally generally RB 36297 9 11 passed pass VBN 36297 9 12 by by RP 36297 9 13 and and CC 36297 9 14 , , , 36297 9 15 inasmuch inasmuch JJ 36297 9 16 as as IN 36297 9 17 there there EX 36297 9 18 does do VBZ 36297 9 19 not not RB 36297 9 20 appear appear VB 36297 9 21 to to TO 36297 9 22 be be VB 36297 9 23 a a DT 36297 9 24 volume volume NN 36297 9 25 available available JJ 36297 9 26 which which WDT 36297 9 27 treats treat VBZ 36297 9 28 the the DT 36297 9 29 subject subject NN 36297 9 30 in in IN 36297 9 31 a a DT 36297 9 32 condensed condense VBN 36297 9 33 manner manner NN 36297 9 34 but but CC 36297 9 35 with with IN 36297 9 36 a a DT 36297 9 37 broad broad JJ 36297 9 38 scope scope NN 36297 9 39 , , , 36297 9 40 this this DT 36297 9 41 small small JJ 36297 9 42 volume volume NN 36297 9 43 is be VBZ 36297 9 44 contributed contribute VBN 36297 9 45 toward toward IN 36297 9 46 filling fill VBG 36297 9 47 the the DT 36297 9 48 gap gap NN 36297 9 49 . . . 36297 10 1 The the DT 36297 10 2 extreme extreme JJ 36297 10 3 complexity complexity NN 36297 10 4 of of IN 36297 10 5 the the DT 36297 10 6 subject subject NN 36297 10 7 is be VBZ 36297 10 8 recognized recognize VBN 36297 10 9 , , , 36297 10 10 but but CC 36297 10 11 an an DT 36297 10 12 attempt attempt NN 36297 10 13 toward toward IN 36297 10 14 simplicity simplicity NN 36297 10 15 of of IN 36297 10 16 treatment treatment NN 36297 10 17 has have VBZ 36297 10 18 been be VBN 36297 10 19 made make VBN 36297 10 20 by by IN 36297 10 21 confining confine VBG 36297 10 22 the the DT 36297 10 23 discussion discussion NN 36297 10 24 chiefly chiefly RB 36297 10 25 to to IN 36297 10 26 static static JJ 36297 10 27 visual visual JJ 36297 10 28 illusions illusion NNS 36297 10 29 , , , 36297 10 30 by by IN 36297 10 31 suppressing suppress VBG 36297 10 32 minor minor JJ 36297 10 33 details detail NNS 36297 10 34 , , , 36297 10 35 and and CC 36297 10 36 by by IN 36297 10 37 subordinating subordinate VBG 36297 10 38 theory theory NN 36297 10 39 . . . 36297 11 1 In in IN 36297 11 2 other other JJ 36297 11 3 words word NNS 36297 11 4 , , , 36297 11 5 the the DT 36297 11 6 intent intent NN 36297 11 7 has have VBZ 36297 11 8 been be VBN 36297 11 9 to to TO 36297 11 10 emphasize emphasize VB 36297 11 11 experimental experimental JJ 36297 11 12 facts fact NNS 36297 11 13 . . . 36297 12 1 Even even RB 36297 12 2 these these DT 36297 12 3 are be VBP 36297 12 4 so so RB 36297 12 5 numerous numerous JJ 36297 12 6 that that IN 36297 12 7 only only RB 36297 12 8 the the DT 36297 12 9 merest mere JJS 36297 12 10 glimpses glimpse NNS 36297 12 11 of of IN 36297 12 12 various various JJ 36297 12 13 aspects aspect NNS 36297 12 14 can can MD 36297 12 15 be be VB 36297 12 16 given give VBN 36297 12 17 in in IN 36297 12 18 order order NN 36297 12 19 to to TO 36297 12 20 limit limit VB 36297 12 21 the the DT 36297 12 22 text text NN 36297 12 23 to to IN 36297 12 24 a a DT 36297 12 25 small small JJ 36297 12 26 volume volume NN 36297 12 27 . . . 36297 13 1 Some some DT 36297 13 2 theoretical theoretical JJ 36297 13 3 aspects aspect NNS 36297 13 4 of of IN 36297 13 5 the the DT 36297 13 6 subject subject NN 36297 13 7 are be VBP 36297 13 8 still still RB 36297 13 9 extremely extremely RB 36297 13 10 controversial controversial JJ 36297 13 11 , , , 36297 13 12 so so IN 36297 13 13 they -PRON- PRP 36297 13 14 are be VBP 36297 13 15 introduced introduce VBN 36297 13 16 only only RB 36297 13 17 occasionally occasionally RB 36297 13 18 and and CC 36297 13 19 then then RB 36297 13 20 chiefly chiefly RB 36297 13 21 for for IN 36297 13 22 the the DT 36297 13 23 purpose purpose NN 36297 13 24 of of IN 36297 13 25 illustrating illustrate VBG 36297 13 26 the the DT 36297 13 27 complexities complexity NNS 36297 13 28 and and CC 36297 13 29 the the DT 36297 13 30 trends trend NNS 36297 13 31 of of IN 36297 13 32 attempted attempt VBN 36297 13 33 explanations explanation NNS 36297 13 34 . . . 36297 14 1 Space space NN 36297 14 2 does do VBZ 36297 14 3 not not RB 36297 14 4 even even RB 36297 14 5 admit admit VB 36297 14 6 many many JJ 36297 14 7 qualifications qualification NNS 36297 14 8 which which WDT 36297 14 9 may may MD 36297 14 10 be be VB 36297 14 11 necessary necessary JJ 36297 14 12 in in IN 36297 14 13 order order NN 36297 14 14 to to TO 36297 14 15 escape escape VB 36297 14 16 criticism criticism NN 36297 14 17 entirely entirely RB 36297 14 18 . . . 36297 15 1 The the DT 36297 15 2 visual visual JJ 36297 15 3 illusions illusion NNS 36297 15 4 discussed discuss VBN 36297 15 5 are be VBP 36297 15 6 chiefly chiefly RB 36297 15 7 of of IN 36297 15 8 the the DT 36297 15 9 static static JJ 36297 15 10 type type NN 36297 15 11 , , , 36297 15 12 although although IN 36297 15 13 a a DT 36297 15 14 few few JJ 36297 15 15 others other NNS 36297 15 16 have have VBP 36297 15 17 been be VBN 36297 15 18 introduced introduce VBN 36297 15 19 . . . 36297 16 1 Some some DT 36297 16 2 of of IN 36297 16 3 the the DT 36297 16 4 latter latter JJ 36297 16 5 border border NN 36297 16 6 upon upon IN 36297 16 7 motion motion NN 36297 16 8 , , , 36297 16 9 others other NNS 36297 16 10 upon upon IN 36297 16 11 hallucinations hallucination NNS 36297 16 12 , , , 36297 16 13 and and CC 36297 16 14 still still RB 36297 16 15 others other NNS 36297 16 16 produced produce VBN 36297 16 17 by by IN 36297 16 18 external external JJ 36297 16 19 optical optical JJ 36297 16 20 media medium NNS 36297 16 21 are be VBP 36297 16 22 illusions illusion NNS 36297 16 23 only only RB 36297 16 24 by by IN 36297 16 25 extension extension NN 36297 16 26 of of IN 36297 16 27 the the DT 36297 16 28 term term NN 36297 16 29 . . . 36297 17 1 These these DT 36297 17 2 exceptions exception NNS 36297 17 3 are be VBP 36297 17 4 included include VBN 36297 17 5 for for IN 36297 17 6 the the DT 36297 17 7 purpose purpose NN 36297 17 8 of of IN 36297 17 9 providing provide VBG 36297 17 10 glimpses glimpse NNS 36297 17 11 into into IN 36297 17 12 the the DT 36297 17 13 borderlands borderland NNS 36297 17 14 . . . 36297 18 1 It -PRON- PRP 36297 18 2 is be VBZ 36297 18 3 hoped hope VBN 36297 18 4 that that IN 36297 18 5 this this DT 36297 18 6 condensed condense VBN 36297 18 7 discussion discussion NN 36297 18 8 , , , 36297 18 9 which which WDT 36297 18 10 is be VBZ 36297 18 11 ambitious ambitious JJ 36297 18 12 only only RB 36297 18 13 in in IN 36297 18 14 scope scope NN 36297 18 15 , , , 36297 18 16 will will MD 36297 18 17 be be VB 36297 18 18 of of IN 36297 18 19 interest interest NN 36297 18 20 to to IN 36297 18 21 the the DT 36297 18 22 general general JJ 36297 18 23 reader reader NN 36297 18 24 , , , 36297 18 25 to to IN 36297 18 26 painters painter NNS 36297 18 27 , , , 36297 18 28 decorators decorator NNS 36297 18 29 , , , 36297 18 30 and and CC 36297 18 31 architects architect NNS 36297 18 32 , , , 36297 18 33 to to IN 36297 18 34 lighting lighting NN 36297 18 35 experts expert NNS 36297 18 36 , , , 36297 18 37 and and CC 36297 18 38 to to IN 36297 18 39 all all DT 36297 18 40 interested interested JJ 36297 18 41 in in IN 36297 18 42 light light NN 36297 18 43 , , , 36297 18 44 color color NN 36297 18 45 , , , 36297 18 46 and and CC 36297 18 47 vision vision NN 36297 18 48 . . . 36297 19 1 It -PRON- PRP 36297 19 2 is be VBZ 36297 19 3 an an DT 36297 19 4 essential essential JJ 36297 19 5 supplement supplement NN 36297 19 6 to to IN 36297 19 7 certain certain JJ 36297 19 8 previous previous JJ 36297 19 9 works work NNS 36297 19 10 . . . 36297 20 1 M. M. NNP 36297 20 2 LUCKIESH LUCKIESH NNP 36297 20 3 November November NNP 36297 20 4 , , , 36297 20 5 1920 1920 CD 36297 20 6 . . . 36297 21 1 CONTENTS content NNS 36297 21 2 CHAPTER chapter NN 36297 21 3 PAGE page NN 36297 21 4 I. i. NN 36297 22 1 Introduction introduction NN 36297 22 2 1 1 CD 36297 22 3 II ii CD 36297 22 4 . . . 36297 23 1 The the DT 36297 23 2 eye eye NN 36297 23 3 13 13 CD 36297 23 4 III iii CD 36297 23 5 . . . 36297 24 1 Vision vision NN 36297 24 2 29 29 CD 36297 24 3 IV IV NNP 36297 24 4 . . . 36297 25 1 Some some DT 36297 25 2 types type NNS 36297 25 3 of of IN 36297 25 4 geometrical geometrical JJ 36297 25 5 illusions illusion NNS 36297 25 6 44 44 CD 36297 25 7 V. V. NNP 36297 25 8 Equivocal Equivocal NNP 36297 25 9 figures figure VBZ 36297 25 10 64 64 CD 36297 25 11 VI VI NNP 36297 25 12 . . . 36297 26 1 The the DT 36297 26 2 influence influence NN 36297 26 3 of of IN 36297 26 4 angles angle NNS 36297 26 5 76 76 CD 36297 26 6 VII vii NN 36297 26 7 . . . 36297 27 1 Illusions illusion NNS 36297 27 2 of of IN 36297 27 3 depth depth NN 36297 27 4 and and CC 36297 27 5 of of IN 36297 27 6 distance distance NN 36297 27 7 102 102 CD 36297 27 8 VIII viii NN 36297 27 9 . . . 36297 28 1 Irradiation irradiation NN 36297 28 2 and and CC 36297 28 3 brightness brightness NN 36297 28 4 - - HYPH 36297 28 5 contrast contrast NN 36297 28 6 114 114 CD 36297 28 7 IX ix NN 36297 28 8 . . . 36297 29 1 Color color NN 36297 29 2 124 124 CD 36297 29 3 X. x. NN 36297 30 1 Lighting lighting NN 36297 30 2 144 144 CD 36297 30 3 XI XI NNP 36297 30 4 . . . 36297 31 1 Nature nature NN 36297 31 2 164 164 CD 36297 31 3 XII xii NN 36297 31 4 . . . 36297 32 1 Painting painting NN 36297 32 2 and and CC 36297 32 3 decoration decoration NN 36297 32 4 179 179 CD 36297 32 5 XIII xiii NN 36297 32 6 . . . 36297 33 1 Architecture architecture NN 36297 33 2 195 195 CD 36297 33 3 XIV xiv NN 36297 33 4 . . . 36297 34 1 Mirror Mirror NNP 36297 34 2 Magic Magic NNP 36297 34 3 205 205 CD 36297 34 4 XV XV NNP 36297 34 5 . . . 36297 35 1 Camouflage camouflage NN 36297 35 2 210 210 CD 36297 35 3 LIST list NN 36297 35 4 OF of IN 36297 35 5 ILLUSTRATIONS illustrations JJ 36297 35 6 FIGURE figure NN 36297 35 7 PAGE page NN 36297 35 8 1 1 CD 36297 35 9 . . . 36297 36 1 Principal principal JJ 36297 36 2 parts part NNS 36297 36 3 of of IN 36297 36 4 the the DT 36297 36 5 eye eye NN 36297 36 6 14 14 CD 36297 36 7 2 2 CD 36297 36 8 . . . 36297 37 1 Stereoscopic stereoscopic JJ 36297 37 2 pictures picture NNS 36297 37 3 for for IN 36297 37 4 combining combine VBG 36297 37 5 by by IN 36297 37 6 converging converge VBG 36297 37 7 or or CC 36297 37 8 diverging diverge VBG 36297 37 9 the the DT 36297 37 10 optical optical JJ 36297 37 11 axes axis NNS 36297 37 12 41 41 CD 36297 37 13 3 3 CD 36297 37 14 . . . 36297 38 1 Stereoscopic Stereoscopic NNP 36297 38 2 pictures picture NNS 36297 38 3 41 41 CD 36297 38 4 4 4 CD 36297 38 5 . . . 36297 39 1 The the DT 36297 39 2 vertical vertical JJ 36297 39 3 line line NN 36297 39 4 appears appear VBZ 36297 39 5 longer long JJR 36297 39 6 than than IN 36297 39 7 the the DT 36297 39 8 equal equal JJ 36297 39 9 horizontal horizontal JJ 36297 39 10 line line NN 36297 39 11 in in IN 36297 39 12 each each DT 36297 39 13 case case NN 36297 39 14 46 46 CD 36297 39 15 5 5 CD 36297 39 16 . . . 36297 40 1 The the DT 36297 40 2 vertical vertical JJ 36297 40 3 dimension dimension NN 36297 40 4 is be VBZ 36297 40 5 equal equal JJ 36297 40 6 to to IN 36297 40 7 the the DT 36297 40 8 horizontal horizontal JJ 36297 40 9 one one NN 36297 40 10 , , , 36297 40 11 but but CC 36297 40 12 the the DT 36297 40 13 former former JJ 36297 40 14 appears appear VBZ 36297 40 15 greater great JJR 36297 40 16 47 47 CD 36297 40 17 6 6 CD 36297 40 18 . . . 36297 41 1 The the DT 36297 41 2 divided divide VBN 36297 41 3 or or CC 36297 41 4 filled fill VBN 36297 41 5 space space NN 36297 41 6 on on IN 36297 41 7 the the DT 36297 41 8 left left NN 36297 41 9 appears appear VBZ 36297 41 10 longer long RBR 36297 41 11 than than IN 36297 41 12 the the DT 36297 41 13 equal equal JJ 36297 41 14 space space NN 36297 41 15 on on IN 36297 41 16 the the DT 36297 41 17 right right JJ 36297 41 18 49 49 CD 36297 41 19 7 7 CD 36297 41 20 . . . 36297 42 1 The the DT 36297 42 2 three three CD 36297 42 3 lines line NNS 36297 42 4 are be VBP 36297 42 5 of of IN 36297 42 6 equal equal JJ 36297 42 7 length length NN 36297 42 8 50 50 CD 36297 42 9 8 8 CD 36297 42 10 . . . 36297 43 1 The the DT 36297 43 2 distance distance NN 36297 43 3 between between IN 36297 43 4 the the DT 36297 43 5 two two CD 36297 43 6 circles circle NNS 36297 43 7 on on IN 36297 43 8 the the DT 36297 43 9 left left NN 36297 43 10 is be VBZ 36297 43 11 equal equal JJ 36297 43 12 to to IN 36297 43 13 the the DT 36297 43 14 distance distance NN 36297 43 15 between between IN 36297 43 16 the the DT 36297 43 17 outside outside JJ 36297 43 18 edges edge NNS 36297 43 19 of of IN 36297 43 20 the the DT 36297 43 21 two two CD 36297 43 22 circles circle NNS 36297 43 23 on on IN 36297 43 24 the the DT 36297 43 25 right right JJ 36297 43 26 50 50 CD 36297 43 27 9 9 CD 36297 43 28 . . . 36297 44 1 Three three CD 36297 44 2 squares square NNS 36297 44 3 of of IN 36297 44 4 equal equal JJ 36297 44 5 dimensions dimension NNS 36297 44 6 which which WDT 36297 44 7 appear appear VBP 36297 44 8 different different JJ 36297 44 9 in in IN 36297 44 10 area area NN 36297 44 11 and and CC 36297 44 12 dimension dimension NN 36297 44 13 51 51 CD 36297 44 14 10 10 CD 36297 44 15 . . . 36297 45 1 The the DT 36297 45 2 vertical vertical JJ 36297 45 3 distance distance NN 36297 45 4 between between IN 36297 45 5 the the DT 36297 45 6 upper upper JJ 36297 45 7 circle circle NN 36297 45 8 and and CC 36297 45 9 the the DT 36297 45 10 left left JJ 36297 45 11 - - HYPH 36297 45 12 hand hand NN 36297 45 13 one one CD 36297 45 14 of of IN 36297 45 15 the the DT 36297 45 16 group group NN 36297 45 17 is be VBZ 36297 45 18 equal equal JJ 36297 45 19 to to IN 36297 45 20 the the DT 36297 45 21 overall overall JJ 36297 45 22 length length NN 36297 45 23 of of IN 36297 45 24 the the DT 36297 45 25 group group NN 36297 45 26 of of IN 36297 45 27 three three CD 36297 45 28 circles circle NNS 36297 45 29 52 52 CD 36297 45 30 11 11 CD 36297 45 31 . . . 36297 46 1 Two two CD 36297 46 2 equal equal JJ 36297 46 3 semi semi JJ 36297 46 4 - - JJ 36297 46 5 circles circle NNS 36297 46 6 53 53 CD 36297 46 7 12 12 CD 36297 46 8 . . . 36297 47 1 Arcs arc NNS 36297 47 2 of of IN 36297 47 3 the the DT 36297 47 4 same same JJ 36297 47 5 circle circle NN 36297 47 6 53 53 CD 36297 47 7 13 13 CD 36297 47 8 . . . 36297 48 1 Three three CD 36297 48 2 incomplete incomplete JJ 36297 48 3 but but CC 36297 48 4 equal equal JJ 36297 48 5 squares square NNS 36297 48 6 53 53 CD 36297 48 7 14 14 CD 36297 48 8 . . . 36297 49 1 Middle middle JJ 36297 49 2 sections section NNS 36297 49 3 of of IN 36297 49 4 the the DT 36297 49 5 two two CD 36297 49 6 lines line NNS 36297 49 7 are be VBP 36297 49 8 equal equal JJ 36297 49 9 54 54 CD 36297 49 10 15 15 CD 36297 49 11 . . . 36297 50 1 An an DT 36297 50 2 effect effect NN 36297 50 3 of of IN 36297 50 4 contrasting contrast VBG 36297 50 5 areas area NNS 36297 50 6 ( ( -LRB- 36297 50 7 Baldwin Baldwin NNP 36297 50 8 's 's POS 36297 50 9 figure figure NN 36297 50 10 ) ) -RRB- 36297 50 11 54 54 CD 36297 50 12 16 16 CD 36297 50 13 . . . 36297 51 1 An an DT 36297 51 2 illusion illusion NN 36297 51 3 of of IN 36297 51 4 contrast contrast NN 36297 51 5 55 55 CD 36297 51 6 17 17 CD 36297 51 7 . . . 36297 52 1 Equal equal JJ 36297 52 2 circles circle NNS 36297 52 3 which which WDT 36297 52 4 appear appear VBP 36297 52 5 unequal unequal JJ 36297 52 6 due due IN 36297 52 7 to to IN 36297 52 8 contrast contrast NN 36297 52 9 ( ( -LRB- 36297 52 10 Ebbinghaus ebbinghaus NN 36297 52 11 ' ' POS 36297 52 12 figure figure NN 36297 52 13 ) ) -RRB- 36297 52 14 56 56 CD 36297 52 15 18 18 CD 36297 52 16 . . . 36297 53 1 Equal equal JJ 36297 53 2 circles circle NNS 36297 53 3 appearing appear VBG 36297 53 4 unequal unequal JJ 36297 53 5 owing owing NN 36297 53 6 to to IN 36297 53 7 contrasting contrast VBG 36297 53 8 concentric concentric NNP 36297 53 9 circles circle NNS 36297 53 10 56 56 CD 36297 53 11 19 19 CD 36297 53 12 . . . 36297 54 1 Circles circle NNS 36297 54 2 influenced influence VBN 36297 54 3 by by IN 36297 54 4 position position NN 36297 54 5 within within IN 36297 54 6 an an DT 36297 54 7 angle angle NN 36297 54 8 57 57 CD 36297 54 9 20 20 CD 36297 54 10 . . . 36297 55 1 Contrasting contrast VBG 36297 55 2 angles angle NNS 36297 55 3 57 57 CD 36297 55 4 21 21 CD 36297 55 5 . . . 36297 56 1 Owing owe VBG 36297 56 2 to to TO 36297 56 3 perspective perspective VB 36297 56 4 the the DT 36297 56 5 right right JJ 36297 56 6 angles angle NNS 36297 56 7 appear appear VBP 36297 56 8 oblique oblique JJ 36297 56 9 and and CC 36297 56 10 vice vice NN 36297 56 11 versa versa IN 36297 56 12 58 58 CD 36297 56 13 22 22 CD 36297 56 14 . . . 36297 57 1 Two two CD 36297 57 2 equal equal JJ 36297 57 3 diagonals diagonal NNS 36297 57 4 which which WDT 36297 57 5 appear appear VBP 36297 57 6 unequal unequal JJ 36297 57 7 58 58 CD 36297 57 8 23 23 CD 36297 57 9 . . . 36297 58 1 Apparent apparent JJ 36297 58 2 variations variation NNS 36297 58 3 in in IN 36297 58 4 the the DT 36297 58 5 distance distance NN 36297 58 6 between between IN 36297 58 7 two two CD 36297 58 8 parallel parallel JJ 36297 58 9 lines line NNS 36297 58 10 59 59 CD 36297 58 11 24 24 CD 36297 58 12 . . . 36297 59 1 A a DT 36297 59 2 striking striking JJ 36297 59 3 illusion illusion NN 36297 59 4 of of IN 36297 59 5 perspective perspective NN 36297 59 6 60 60 CD 36297 59 7 25 25 CD 36297 59 8 . . . 36297 60 1 Distortion distortion NN 36297 60 2 of of IN 36297 60 3 a a DT 36297 60 4 square square NN 36297 60 5 due due JJ 36297 60 6 to to IN 36297 60 7 superposed superpose VBN 36297 60 8 lines line NNS 36297 60 9 61 61 CD 36297 60 10 26 26 CD 36297 60 11 . . . 36297 61 1 Distortion distortion NN 36297 61 2 of of IN 36297 61 3 a a DT 36297 61 4 circle circle NN 36297 61 5 due due JJ 36297 61 6 to to IN 36297 61 7 superposed superpose VBN 36297 61 8 lines line NNS 36297 61 9 62 62 CD 36297 61 10 27 27 CD 36297 61 11 . . . 36297 62 1 Illustrating illustrate VBG 36297 62 2 fluctuation fluctuation NN 36297 62 3 of of IN 36297 62 4 attention attention NN 36297 62 5 65 65 CD 36297 62 6 28 28 CD 36297 62 7 . . . 36297 63 1 The the DT 36297 63 2 grouping grouping NN 36297 63 3 of of IN 36297 63 4 the the DT 36297 63 5 circles circle NNS 36297 63 6 fluctuates fluctuate VBZ 36297 63 7 66 66 CD 36297 63 8 29 29 CD 36297 63 9 . . . 36297 64 1 Crossed cross VBN 36297 64 2 lines line NNS 36297 64 3 which which WDT 36297 64 4 may may MD 36297 64 5 be be VB 36297 64 6 interpreted interpret VBN 36297 64 7 in in IN 36297 64 8 two two CD 36297 64 9 ways way NNS 36297 64 10 67 67 CD 36297 64 11 30 30 CD 36297 64 12 . . . 36297 65 1 Reversible reversible JJ 36297 65 2 cubes cube NNS 36297 65 3 68 68 CD 36297 65 4 31 31 CD 36297 65 5 . . . 36297 66 1 The the DT 36297 66 2 reversible reversible JJ 36297 66 3 " " `` 36297 66 4 open open JJ 36297 66 5 book book NN 36297 66 6 " " '' 36297 66 7 ( ( -LRB- 36297 66 8 after after IN 36297 66 9 Mach Mach NNP 36297 66 10 ) ) -RRB- 36297 66 11 69 69 CD 36297 66 12 32 32 CD 36297 66 13 . . . 36297 67 1 A a DT 36297 67 2 reversible reversible JJ 36297 67 3 tetrahedron tetrahedron JJ 36297 67 4 69 69 CD 36297 67 5 33 33 CD 36297 67 6 . . . 36297 68 1 Reversible reversible JJ 36297 68 2 perspective perspective NN 36297 68 3 of of IN 36297 68 4 a a DT 36297 68 5 group group NN 36297 68 6 of of IN 36297 68 7 rings ring NNS 36297 68 8 or or CC 36297 68 9 of of IN 36297 68 10 a a DT 36297 68 11 tube tube NN 36297 68 12 70 70 CD 36297 68 13 34 34 CD 36297 68 14 . . . 36297 69 1 Schröder Schröder NNP 36297 69 2 's 's POS 36297 69 3 reversible reversible NN 36297 69 4 staircase staircase NN 36297 69 5 70 70 CD 36297 69 6 35 35 CD 36297 69 7 . . . 36297 70 1 Thiéry Thiéry NNP 36297 70 2 's 's POS 36297 70 3 figure figure NN 36297 70 4 71 71 CD 36297 70 5 36 36 CD 36297 70 6 . . . 36297 71 1 Illustrating illustrate VBG 36297 71 2 certain certain JJ 36297 71 3 influences influence NNS 36297 71 4 upon upon IN 36297 71 5 the the DT 36297 71 6 apparent apparent JJ 36297 71 7 direction direction NN 36297 71 8 of of IN 36297 71 9 vision vision NN 36297 71 10 . . . 36297 72 1 By by IN 36297 72 2 covering cover VBG 36297 72 3 all all DT 36297 72 4 but but IN 36297 72 5 the the DT 36297 72 6 eyes eye NNS 36297 72 7 the the DT 36297 72 8 latter latter JJ 36297 72 9 appear appear VBP 36297 72 10 to to TO 36297 72 11 be be VB 36297 72 12 drawn draw VBN 36297 72 13 alike alike RB 36297 72 14 in in IN 36297 72 15 both both DT 36297 72 16 sketches sketch VBZ 36297 72 17 73 73 CD 36297 72 18 37 37 CD 36297 72 19 . . . 36297 73 1 Zöllner Zöllner NNP 36297 73 2 's 's POS 36297 73 3 illusion illusion NN 36297 73 4 of of IN 36297 73 5 direction direction NN 36297 73 6 77 77 CD 36297 73 7 38 38 CD 36297 73 8 . . . 36297 74 1 Parallel parallel JJ 36297 74 2 lines line NNS 36297 74 3 which which WDT 36297 74 4 do do VBP 36297 74 5 not not RB 36297 74 6 appear appear VB 36297 74 7 so so RB 36297 74 8 79 79 CD 36297 74 9 39 39 CD 36297 74 10 . . . 36297 75 1 Wundt Wundt NNP 36297 75 2 's 's POS 36297 75 3 illusion illusion NN 36297 75 4 of of IN 36297 75 5 direction direction NN 36297 75 6 79 79 CD 36297 75 7 40 40 CD 36297 75 8 . . . 36297 76 1 Hering Hering NNP 36297 76 2 's 's POS 36297 76 3 illusion illusion NN 36297 76 4 of of IN 36297 76 5 direction direction NN 36297 76 6 80 80 CD 36297 76 7 41 41 CD 36297 76 8 . . . 36297 77 1 Simple simple JJ 36297 77 2 effect effect NN 36297 77 3 of of IN 36297 77 4 angles angle NNS 36297 77 5 81 81 CD 36297 77 6 42 42 CD 36297 77 7 . . . 36297 78 1 The the DT 36297 78 2 effect effect NN 36297 78 3 of of IN 36297 78 4 two two CD 36297 78 5 angles angle NNS 36297 78 6 in in IN 36297 78 7 tilting tilt VBG 36297 78 8 the the DT 36297 78 9 horizontal horizontal JJ 36297 78 10 lines line NNS 36297 78 11 83 83 CD 36297 78 12 43 43 CD 36297 78 13 . . . 36297 79 1 The the DT 36297 79 2 effect effect NN 36297 79 3 of of IN 36297 79 4 crossed cross VBN 36297 79 5 lines line NNS 36297 79 6 upon upon IN 36297 79 7 their -PRON- PRP$ 36297 79 8 respective respective JJ 36297 79 9 apparent apparent JJ 36297 79 10 directions direction NNS 36297 79 11 83 83 CD 36297 79 12 44 44 CD 36297 79 13 . . . 36297 80 1 Another another DT 36297 80 2 step step NN 36297 80 3 toward toward IN 36297 80 4 the the DT 36297 80 5 Zöllner Zöllner NNP 36297 80 6 illusion illusion NN 36297 80 7 84 84 CD 36297 80 8 45 45 CD 36297 80 9 . . . 36297 81 1 The the DT 36297 81 2 two two CD 36297 81 3 diagonals diagonal NNS 36297 81 4 would would MD 36297 81 5 meet meet VB 36297 81 6 on on IN 36297 81 7 the the DT 36297 81 8 left left JJ 36297 81 9 vertical vertical JJ 36297 81 10 line line NN 36297 81 11 85 85 CD 36297 81 12 46 46 CD 36297 81 13 . . . 36297 82 1 Poggendorff Poggendorff NNP 36297 82 2 's 's POS 36297 82 3 illusion illusion NN 36297 82 4 . . . 36297 83 1 Which which WDT 36297 83 2 oblique oblique JJ 36297 83 3 line line NN 36297 83 4 on on IN 36297 83 5 the the DT 36297 83 6 right right NN 36297 83 7 is be VBZ 36297 83 8 the the DT 36297 83 9 prolongation prolongation NN 36297 83 10 of of IN 36297 83 11 the the DT 36297 83 12 oblique oblique JJ 36297 83 13 line line NN 36297 83 14 on on IN 36297 83 15 the the DT 36297 83 16 left left NN 36297 83 17 ? ? . 36297 84 1 85 85 CD 36297 84 2 47 47 CD 36297 84 3 . . . 36297 85 1 A a DT 36297 85 2 straight straight JJ 36297 85 3 line line NN 36297 85 4 appears appear VBZ 36297 85 5 to to TO 36297 85 6 sag sag VB 36297 85 7 86 86 CD 36297 85 8 48 48 CD 36297 85 9 . . . 36297 86 1 Distortions distortion NNS 36297 86 2 of of IN 36297 86 3 contour contour NN 36297 86 4 due due IN 36297 86 5 to to IN 36297 86 6 contact contact NN 36297 86 7 with with IN 36297 86 8 other other JJ 36297 86 9 contours contour NNS 36297 86 10 87 87 CD 36297 86 11 49 49 CD 36297 86 12 . . . 36297 87 1 An an DT 36297 87 2 illusion illusion NN 36297 87 3 of of IN 36297 87 4 direction direction NN 36297 87 5 88 88 CD 36297 87 6 50 50 CD 36297 87 7 . . . 36297 88 1 " " `` 36297 88 2 Twisted twisted JJ 36297 88 3 - - HYPH 36297 88 4 cord cord NN 36297 88 5 " " '' 36297 88 6 illusion illusion NN 36297 88 7 . . . 36297 89 1 These these DT 36297 89 2 are be VBP 36297 89 3 straight straight JJ 36297 89 4 cords cord NNS 36297 89 5 89 89 CD 36297 89 6 51 51 CD 36297 89 7 . . . 36297 90 1 " " `` 36297 90 2 Twisted twisted JJ 36297 90 3 - - HYPH 36297 90 4 cord cord NN 36297 90 5 " " '' 36297 90 6 illusion illusion NN 36297 90 7 . . . 36297 91 1 These these DT 36297 91 2 are be VBP 36297 91 3 concentric concentric JJ 36297 91 4 circles circle NNS 36297 91 5 89 89 CD 36297 91 6 52 52 CD 36297 91 7 . . . 36297 92 1 A a DT 36297 92 2 spiral spiral NN 36297 92 3 when when WRB 36297 92 4 rotated rotate VBD 36297 92 5 appears appear VBZ 36297 92 6 to to TO 36297 92 7 expand expand VB 36297 92 8 or or CC 36297 92 9 contract contract VB 36297 92 10 , , , 36297 92 11 depending depend VBG 36297 92 12 upon upon IN 36297 92 13 direction direction NN 36297 92 14 of of IN 36297 92 15 rotation rotation NN 36297 92 16 90 90 CD 36297 92 17 53 53 CD 36297 92 18 . . . 36297 93 1 Angles angle NNS 36297 93 2 affect affect VBP 36297 93 3 the the DT 36297 93 4 apparent apparent JJ 36297 93 5 length length NN 36297 93 6 of of IN 36297 93 7 lines line NNS 36297 93 8 91 91 CD 36297 93 9 54 54 CD 36297 93 10 . . . 36297 94 1 The the DT 36297 94 2 horizontal horizontal JJ 36297 94 3 line line NN 36297 94 4 appears appear VBZ 36297 94 5 to to TO 36297 94 6 tilt tilt VB 36297 94 7 downward downward RB 36297 94 8 toward toward IN 36297 94 9 the the DT 36297 94 10 ends end NNS 36297 94 11 92 92 CD 36297 94 12 55 55 CD 36297 94 13 . . . 36297 95 1 The the DT 36297 95 2 horizontal horizontal JJ 36297 95 3 line line NN 36297 95 4 appears appear VBZ 36297 95 5 to to TO 36297 95 6 sag sag VB 36297 95 7 in in IN 36297 95 8 the the DT 36297 95 9 middle middle JJ 36297 95 10 92 92 CD 36297 95 11 56 56 CD 36297 95 12 . . . 36297 96 1 The the DT 36297 96 2 Müller Müller NNP 36297 96 3 - - HYPH 36297 96 4 Lyer Lyer NNP 36297 96 5 illusion illusion NN 36297 96 6 93 93 CD 36297 96 7 57 57 CD 36297 96 8 . . . 36297 97 1 Combined combine VBN 36297 97 2 influence influence NN 36297 97 3 of of IN 36297 97 4 angles angle NNS 36297 97 5 and and CC 36297 97 6 contrasting contrast VBG 36297 97 7 lengths length NNS 36297 97 8 95 95 CD 36297 97 9 58 58 CD 36297 97 10 . . . 36297 98 1 Two two CD 36297 98 2 equal equal JJ 36297 98 3 oblique oblique JJ 36297 98 4 lines line NNS 36297 98 5 appear appear VBP 36297 98 6 unequal unequal JJ 36297 98 7 because because IN 36297 98 8 of of IN 36297 98 9 their -PRON- PRP$ 36297 98 10 different different JJ 36297 98 11 positions position NNS 36297 98 12 95 95 CD 36297 98 13 59 59 CD 36297 98 14 . . . 36297 99 1 An an DT 36297 99 2 illusion illusion NN 36297 99 3 of of IN 36297 99 4 area area NN 36297 99 5 96 96 CD 36297 99 6 60 60 CD 36297 99 7 . . . 36297 100 1 Five five CD 36297 100 2 equal equal JJ 36297 100 3 areas area NNS 36297 100 4 showing show VBG 36297 100 5 the the DT 36297 100 6 influence influence NN 36297 100 7 of of IN 36297 100 8 contour contour NN 36297 100 9 upon upon IN 36297 100 10 judgment judgment NN 36297 100 11 of of IN 36297 100 12 area area NN 36297 100 13 97 97 CD 36297 100 14 61 61 CD 36297 100 15 . . . 36297 101 1 Showing show VBG 36297 101 2 the the DT 36297 101 3 effect effect NN 36297 101 4 of of IN 36297 101 5 directing direct VBG 36297 101 6 the the DT 36297 101 7 attention attention NN 36297 101 8 98 98 CD 36297 101 9 62 62 CD 36297 101 10 . . . 36297 102 1 Simple simple JJ 36297 102 2 apparatus apparatus NN 36297 102 3 for for IN 36297 102 4 demonstrating demonstrate VBG 36297 102 5 the the DT 36297 102 6 remarkable remarkable JJ 36297 102 7 effects effect NNS 36297 102 8 of of IN 36297 102 9 contrasts contrast NNS 36297 102 10 in in IN 36297 102 11 brightness brightness NN 36297 102 12 and and CC 36297 102 13 color color NN 36297 102 14 115 115 CD 36297 102 15 63 63 CD 36297 102 16 . . . 36297 103 1 Illustrating illustrate VBG 36297 103 2 brightness brightness NN 36297 103 3 - - HYPH 36297 103 4 contrast contrast NN 36297 103 5 117 117 CD 36297 103 6 64 64 CD 36297 103 7 . . . 36297 104 1 An an DT 36297 104 2 effect effect NN 36297 104 3 of of IN 36297 104 4 brightness brightness NN 36297 104 5 - - HYPH 36297 104 6 contrast contrast NN 36297 104 7 . . . 36297 105 1 Note note VB 36297 105 2 the the DT 36297 105 3 darkening darkening NN 36297 105 4 of of IN 36297 105 5 the the DT 36297 105 6 intersections intersection NNS 36297 105 7 of of IN 36297 105 8 the the DT 36297 105 9 white white NNP 36297 105 10 strips strip NNS 36297 105 11 118 118 CD 36297 105 12 65 65 CD 36297 105 13 . . . 36297 106 1 The the DT 36297 106 2 phenomenon phenomenon NN 36297 106 3 of of IN 36297 106 4 irradiation irradiation NN 36297 106 5 121 121 CD 36297 106 6 66 66 CD 36297 106 7 . . . 36297 107 1 An an DT 36297 107 2 excellent excellent JJ 36297 107 3 pattern pattern NN 36297 107 4 for for IN 36297 107 5 demonstrating demonstrate VBG 36297 107 6 color color NN 36297 107 7 - - HYPH 36297 107 8 contrast contrast NN 36297 107 9 126 126 CD 36297 107 10 67 67 CD 36297 107 11 . . . 36297 108 1 By by IN 36297 108 2 rotating rotate VBG 36297 108 3 this this DT 36297 108 4 Mason Mason NNP 36297 108 5 ( ( -LRB- 36297 108 6 black black JJ 36297 108 7 and and CC 36297 108 8 white white JJ 36297 108 9 ) ) -RRB- 36297 108 10 disk disk NN 36297 108 11 color color NN 36297 108 12 - - HYPH 36297 108 13 sensations sensation NNS 36297 108 14 are be VBP 36297 108 15 produced produce VBN 36297 108 16 133 133 CD 36297 108 17 68 68 CD 36297 108 18 . . . 36297 109 1 For for IN 36297 109 2 demonstrating demonstrate VBG 36297 109 3 retiring retire VBG 36297 109 4 and and CC 36297 109 5 advancing advance VBG 36297 109 6 colors color NNS 36297 109 7 137 137 CD 36297 109 8 69 69 CD 36297 109 9 . . . 36297 110 1 By by IN 36297 110 2 combining combine VBG 36297 110 3 these these DT 36297 110 4 stereoscopically stereoscopically RB 36297 110 5 the the DT 36297 110 6 effect effect NN 36297 110 7 of of IN 36297 110 8 metallic metallic NNP 36297 110 9 lustre lustre NNP 36297 110 10 ( ( -LRB- 36297 110 11 similar similar JJ 36297 110 12 to to IN 36297 110 13 graphite graphite VB 36297 110 14 in in IN 36297 110 15 this this DT 36297 110 16 case case NN 36297 110 17 ) ) -RRB- 36297 110 18 is be VBZ 36297 110 19 obtained obtain VBN 36297 110 20 141 141 CD 36297 110 21 70 70 CD 36297 110 22 . . . 36297 111 1 A a DT 36297 111 2 bas bas NN 36297 111 3 - - HYPH 36297 111 4 relief relief NN 36297 111 5 lighted light VBN 36297 111 6 from from IN 36297 111 7 above above IN 36297 111 8 146 146 CD 36297 111 9 71 71 CD 36297 111 10 . . . 36297 112 1 An an DT 36297 112 2 intaglio intaglio NN 36297 112 3 lighted light VBN 36297 112 4 from from IN 36297 112 5 above above IN 36297 112 6 147 147 CD 36297 112 7 72 72 CD 36297 112 8 . . . 36297 113 1 A a DT 36297 113 2 bas bas NN 36297 113 3 - - HYPH 36297 113 4 relief relief NN 36297 113 5 lighted light VBN 36297 113 6 from from IN 36297 113 7 the the DT 36297 113 8 left left JJ 36297 113 9 148 148 CD 36297 113 10 73 73 CD 36297 113 11 . . . 36297 114 1 An an DT 36297 114 2 intaglio intaglio NN 36297 114 3 lighted light VBN 36297 114 4 from from IN 36297 114 5 the the DT 36297 114 6 left left JJ 36297 114 7 149 149 CD 36297 114 8 74a 74a NNS 36297 114 9 . . . 36297 115 1 A a DT 36297 115 2 disk disk NN 36297 115 3 ( ( -LRB- 36297 115 4 above above RB 36297 115 5 ) ) -RRB- 36297 115 6 and and CC 36297 115 7 a a DT 36297 115 8 sphere sphere NN 36297 115 9 ( ( -LRB- 36297 115 10 below below RB 36297 115 11 ) ) -RRB- 36297 115 12 lighted light VBN 36297 115 13 from from IN 36297 115 14 overhead overhead JJ 36297 115 15 145 145 CD 36297 115 16 b. b. NN 36297 116 1 A a DT 36297 116 2 disk disk NN 36297 116 3 and and CC 36297 116 4 a a DT 36297 116 5 sphere sphere NN 36297 116 6 lighted light VBN 36297 116 7 by by IN 36297 116 8 perfectly perfectly RB 36297 116 9 diffused diffuse VBN 36297 116 10 light light JJ 36297 116 11 145 145 CD 36297 116 12 75 75 CD 36297 116 13 . . . 36297 117 1 A a DT 36297 117 2 concave concave NNP 36297 117 3 hemispherical hemispherical JJ 36297 117 4 cup cup NN 36297 117 5 on on IN 36297 117 6 the the DT 36297 117 7 left left NN 36297 117 8 and and CC 36297 117 9 a a DT 36297 117 10 convex convex NNS 36297 117 11 hemisphere hemisphere NN 36297 117 12 on on IN 36297 117 13 the the DT 36297 117 14 right right NN 36297 117 15 lighted light VBN 36297 117 16 by by IN 36297 117 17 a a DT 36297 117 18 light light JJ 36297 117 19 - - HYPH 36297 117 20 source source NN 36297 117 21 of of IN 36297 117 22 large large JJ 36297 117 23 angle angle NN 36297 117 24 such such JJ 36297 117 25 as as IN 36297 117 26 a a DT 36297 117 27 window window NN 36297 117 28 150 150 CD 36297 117 29 76 76 CD 36297 117 30 . . . 36297 118 1 The the DT 36297 118 2 same same JJ 36297 118 3 as as IN 36297 118 4 Fig Fig NNP 36297 118 5 . . . 36297 119 1 75 75 CD 36297 119 2 , , , 36297 119 3 but but CC 36297 119 4 lighted light VBN 36297 119 5 by by IN 36297 119 6 a a DT 36297 119 7 very very RB 36297 119 8 small small JJ 36297 119 9 light light JJ 36297 119 10 - - HYPH 36297 119 11 source source NN 36297 119 12 151 151 CD 36297 119 13 77 77 CD 36297 119 14 . . . 36297 120 1 Apparent apparent JJ 36297 120 2 ending ending NN 36297 120 3 of of IN 36297 120 4 a a DT 36297 120 5 searchlight searchlight NN 36297 120 6 beam beam NN 36297 120 7 161 161 CD 36297 120 8 78 78 CD 36297 120 9 . . . 36297 121 1 An an DT 36297 121 2 accurate accurate JJ 36297 121 3 tracing tracing NN 36297 121 4 from from IN 36297 121 5 a a DT 36297 121 6 photograph photograph NN 36297 121 7 ( ( -LRB- 36297 121 8 continual continual JJ 36297 121 9 exposure exposure NN 36297 121 10 ) ) -RRB- 36297 121 11 of of IN 36297 121 12 the the DT 36297 121 13 moon moon NN 36297 121 14 rising rise VBG 36297 121 15 171 171 CD 36297 121 16 79 79 CD 36297 121 17 . . . 36297 122 1 Accurate accurate JJ 36297 122 2 tracings tracing NNS 36297 122 3 from from IN 36297 122 4 a a DT 36297 122 5 photograph photograph NN 36297 122 6 ( ( -LRB- 36297 122 7 short short JJ 36297 122 8 exposures exposure NNS 36297 122 9 at at IN 36297 122 10 intervals interval NNS 36297 122 11 ) ) -RRB- 36297 122 12 of of IN 36297 122 13 the the DT 36297 122 14 sun sun NN 36297 122 15 setting set VBG 36297 122 16 172 172 CD 36297 122 17 80 80 CD 36297 122 18 . . . 36297 123 1 Explanation explanation NN 36297 123 2 offered offer VBN 36297 123 3 by by IN 36297 123 4 Smith Smith NNP 36297 123 5 of of IN 36297 123 6 the the DT 36297 123 7 apparent apparent JJ 36297 123 8 enlargement enlargement NN 36297 123 9 of of IN 36297 123 10 heavenly heavenly JJ 36297 123 11 bodies body NNS 36297 123 12 near near IN 36297 123 13 the the DT 36297 123 14 horizon horizon NN 36297 123 15 174 174 CD 36297 123 16 81 81 CD 36297 123 17 . . . 36297 124 1 Explanation explanation NN 36297 124 2 of of IN 36297 124 3 a a DT 36297 124 4 common common JJ 36297 124 5 mirage mirage NN 36297 124 6 176 176 CD 36297 124 7 82 82 CD 36297 124 8 . . . 36297 125 1 Illustrating illustrate VBG 36297 125 2 the the DT 36297 125 3 apparent apparent JJ 36297 125 4 distortion distortion NN 36297 125 5 of of IN 36297 125 6 a a DT 36297 125 7 picture picture NN 36297 125 8 frame frame NN 36297 125 9 in in IN 36297 125 10 which which WDT 36297 125 11 the the DT 36297 125 12 grain grain NN 36297 125 13 of of IN 36297 125 14 the the DT 36297 125 15 wood wood NN 36297 125 16 is be VBZ 36297 125 17 visible visible JJ 36297 125 18 190 190 CD 36297 125 19 83 83 CD 36297 125 20 . . . 36297 126 1 Another another DT 36297 126 2 example example NN 36297 126 3 similar similar JJ 36297 126 4 to to IN 36297 126 5 Fig Fig NNP 36297 126 6 . . . 36297 127 1 82 82 CD 36297 127 2 191 191 CD 36297 127 3 84 84 CD 36297 127 4 . . . 36297 128 1 From from IN 36297 128 2 actual actual JJ 36297 128 3 photographs photograph NNS 36297 128 4 of of IN 36297 128 5 the the DT 36297 128 6 end end NN 36297 128 7 - - HYPH 36297 128 8 grain grain NN 36297 128 9 of of IN 36297 128 10 a a DT 36297 128 11 board board NN 36297 128 12 192 192 CD 36297 128 13 85 85 CD 36297 128 14 . . . 36297 129 1 Exaggerated exaggerated JJ 36297 129 2 illusions illusion NNS 36297 129 3 in in IN 36297 129 4 architecture architecture NN 36297 129 5 198 198 CD 36297 129 6 86 86 CD 36297 129 7 . . . 36297 130 1 Illustrating illustrate VBG 36297 130 2 the the DT 36297 130 3 influence influence NN 36297 130 4 of of IN 36297 130 5 visual visual JJ 36297 130 6 angle angle NN 36297 130 7 upon upon IN 36297 130 8 apparent apparent JJ 36297 130 9 vertical vertical JJ 36297 130 10 height height NN 36297 130 11 199 199 CD 36297 130 12 87 87 CD 36297 130 13 . . . 36297 131 1 Irradiation irradiation NN 36297 131 2 in in IN 36297 131 3 architecture architecture NN 36297 131 4 200 200 CD 36297 131 5 88 88 CD 36297 131 6 . . . 36297 132 1 Some some DT 36297 132 2 simple simple JJ 36297 132 3 geometrical geometrical JJ 36297 132 4 - - HYPH 36297 132 5 optical optical JJ 36297 132 6 illusions illusion NNS 36297 132 7 in in IN 36297 132 8 architecture architecture NN 36297 132 9 201 201 CD 36297 132 10 89 89 CD 36297 132 11 . . . 36297 133 1 By by IN 36297 133 2 decreasing decrease VBG 36297 133 3 the the DT 36297 133 4 exposed expose VBN 36297 133 5 length length NN 36297 133 6 of of IN 36297 133 7 shingles shingle NNS 36297 133 8 toward toward IN 36297 133 9 the the DT 36297 133 10 top top NN 36297 133 11 a a DT 36297 133 12 greater great JJR 36297 133 13 apparent apparent JJ 36297 133 14 expanse expanse NN 36297 133 15 is be VBZ 36297 133 16 obtained obtain VBN 36297 133 17 202 202 CD 36297 133 18 90 90 CD 36297 133 19 . . . 36297 134 1 An an DT 36297 134 2 example example NN 36297 134 3 of of IN 36297 134 4 a a DT 36297 134 5 mirror mirror NN 36297 134 6 " " '' 36297 134 7 illusion illusion NN 36297 134 8 " " '' 36297 134 9 207 207 CD 36297 134 10 91 91 CD 36297 134 11 . . . 36297 135 1 Another another DT 36297 135 2 example example NN 36297 135 3 of of IN 36297 135 4 " " `` 36297 135 5 mirror mirror NNP 36297 135 6 magic magic NNP 36297 135 7 " " '' 36297 135 8 208 208 CD 36297 135 9 92 92 CD 36297 135 10 . . . 36297 136 1 A a DT 36297 136 2 primary primary JJ 36297 136 3 stage stage NN 36297 136 4 in in IN 36297 136 5 the the DT 36297 136 6 evolution evolution NN 36297 136 7 of of IN 36297 136 8 the the DT 36297 136 9 use use NN 36297 136 10 of of IN 36297 136 11 geometrical geometrical JJ 36297 136 12 - - HYPH 36297 136 13 optical optical JJ 36297 136 14 illusions illusion NNS 36297 136 15 on on IN 36297 136 16 ships ship NNS 36297 136 17 226 226 CD 36297 136 18 93 93 CD 36297 136 19 and and CC 36297 136 20 94 94 CD 36297 136 21 . . . 36297 137 1 Attempts attempt NNS 36297 137 2 at at IN 36297 137 3 distortion distortion NN 36297 137 4 of of IN 36297 137 5 outline outline NN 36297 137 6 which which WDT 36297 137 7 preceded precede VBD 36297 137 8 the the DT 36297 137 9 adoption adoption NN 36297 137 10 of of IN 36297 137 11 geometrical geometrical JJ 36297 137 12 - - HYPH 36297 137 13 optical optical JJ 36297 137 14 illusions illusion NNS 36297 137 15 228 228 CD 36297 137 16 95 95 CD 36297 137 17 and and CC 36297 137 18 96 96 CD 36297 137 19 . . . 36297 138 1 Illustrating illustrate VBG 36297 138 2 the the DT 36297 138 3 use use NN 36297 138 4 of of IN 36297 138 5 models model NNS 36297 138 6 by by IN 36297 138 7 the the DT 36297 138 8 Navy Navy NNP 36297 138 9 Department Department NNP 36297 138 10 in in IN 36297 138 11 developing develop VBG 36297 138 12 the the DT 36297 138 13 geometrical geometrical JJ 36297 138 14 - - HYPH 36297 138 15 optical optical JJ 36297 138 16 illusion illusion NN 36297 138 17 for for IN 36297 138 18 ships ship NNS 36297 138 19 229 229 CD 36297 138 20 97 97 CD 36297 138 21 and and CC 36297 138 22 98 98 CD 36297 138 23 . . . 36297 139 1 Examples example NNS 36297 139 2 of of IN 36297 139 3 the the DT 36297 139 4 geometrical geometrical JJ 36297 139 5 - - HYPH 36297 139 6 optical optical JJ 36297 139 7 illusion illusion NN 36297 139 8 as as IN 36297 139 9 finally finally RB 36297 139 10 applied apply VBD 36297 139 11 231 231 CD 36297 139 12 99 99 CD 36297 139 13 . . . 36297 140 1 Representative representative JJ 36297 140 2 earth earth NN 36297 140 3 backgrounds background VBZ 36297 140 4 for for IN 36297 140 5 an an DT 36297 140 6 airplane airplane NN 36297 140 7 ( ( -LRB- 36297 140 8 uncamouflaged uncamouflaged JJ 36297 140 9 ) ) -RRB- 36297 140 10 as as IN 36297 140 11 viewed view VBN 36297 140 12 from from IN 36297 140 13 above above IN 36297 140 14 235 235 CD 36297 140 15 100 100 CD 36297 140 16 . . . 36297 141 1 Illustrating illustrate VBG 36297 141 2 the the DT 36297 141 3 study study NN 36297 141 4 of of IN 36297 141 5 pattern pattern NN 36297 141 6 for for IN 36297 141 7 airplanes airplane NNS 36297 141 8 . . . 36297 142 1 The the DT 36297 142 2 photograph photograph NN 36297 142 3 was be VBD 36297 142 4 taken take VBN 36297 142 5 from from IN 36297 142 6 an an DT 36297 142 7 altitude altitude NN 36297 142 8 of of IN 36297 142 9 10,000 10,000 CD 36297 142 10 feet foot NNS 36297 142 11 . . . 36297 143 1 The the DT 36297 143 2 insert insert NN 36297 143 3 shows show VBZ 36297 143 4 the the DT 36297 143 5 relative relative JJ 36297 143 6 lengths length NNS 36297 143 7 ( ( -LRB- 36297 143 8 vertical vertical JJ 36297 143 9 scale scale NN 36297 143 10 ) ) -RRB- 36297 143 11 of of IN 36297 143 12 an an DT 36297 143 13 airplane airplane NN 36297 143 14 of of IN 36297 143 15 50-foot 50-foot CD 36297 143 16 spread spread NN 36297 143 17 at at IN 36297 143 18 various various JJ 36297 143 19 distances distance NNS 36297 143 20 below below IN 36297 143 21 the the DT 36297 143 22 observer observer NN 36297 143 23 239 239 CD 36297 143 24 VISUAL VISUAL NNS 36297 143 25 ILLUSIONS illusion VBZ 36297 143 26 I -PRON- PRP 36297 143 27 INTRODUCTION introduction VBP 36297 143 28 Seeing see VBG 36297 143 29 is be VBZ 36297 143 30 deceiving deceive VBG 36297 143 31 . . . 36297 144 1 Thus thus RB 36297 144 2 a a DT 36297 144 3 familiar familiar JJ 36297 144 4 epigram epigram NN 36297 144 5 may may MD 36297 144 6 be be VB 36297 144 7 challenged challenge VBN 36297 144 8 in in IN 36297 144 9 order order NN 36297 144 10 to to TO 36297 144 11 indicate indicate VB 36297 144 12 the the DT 36297 144 13 trend trend NN 36297 144 14 of of IN 36297 144 15 this this DT 36297 144 16 book book NN 36297 144 17 which which WDT 36297 144 18 aims aim VBZ 36297 144 19 to to TO 36297 144 20 treat treat VB 36297 144 21 certain certain JJ 36297 144 22 phases phase NNS 36297 144 23 of of IN 36297 144 24 visual visual JJ 36297 144 25 illusions illusion NNS 36297 144 26 . . . 36297 145 1 In in IN 36297 145 2 general general JJ 36297 145 3 , , , 36297 145 4 we -PRON- PRP 36297 145 5 do do VBP 36297 145 6 not not RB 36297 145 7 see see VB 36297 145 8 things thing NNS 36297 145 9 as as IN 36297 145 10 they -PRON- PRP 36297 145 11 are be VBP 36297 145 12 or or CC 36297 145 13 as as IN 36297 145 14 they -PRON- PRP 36297 145 15 are be VBP 36297 145 16 related relate VBN 36297 145 17 to to IN 36297 145 18 each each DT 36297 145 19 other other JJ 36297 145 20 ; ; : 36297 145 21 that that RB 36297 145 22 is is RB 36297 145 23 , , , 36297 145 24 the the DT 36297 145 25 intellect intellect NN 36297 145 26 does do VBZ 36297 145 27 not not RB 36297 145 28 correctly correctly RB 36297 145 29 interpret interpret VB 36297 145 30 the the DT 36297 145 31 deliverances deliverance NNS 36297 145 32 of of IN 36297 145 33 the the DT 36297 145 34 visual visual JJ 36297 145 35 sense sense NN 36297 145 36 , , , 36297 145 37 although although IN 36297 145 38 sometimes sometimes RB 36297 145 39 the the DT 36297 145 40 optical optical JJ 36297 145 41 mechanism mechanism NN 36297 145 42 of of IN 36297 145 43 the the DT 36297 145 44 eyes eye NNS 36297 145 45 is be VBZ 36297 145 46 directly directly RB 36297 145 47 responsible responsible JJ 36297 145 48 for for IN 36297 145 49 the the DT 36297 145 50 illusion illusion NN 36297 145 51 . . . 36297 146 1 In in IN 36297 146 2 other other JJ 36297 146 3 words word NNS 36297 146 4 , , , 36297 146 5 none none NN 36297 146 6 of of IN 36297 146 7 our -PRON- PRP$ 36297 146 8 conceptions conception NNS 36297 146 9 and and CC 36297 146 10 perceptions perception NNS 36297 146 11 are be VBP 36297 146 12 quite quite RB 36297 146 13 adequate adequate JJ 36297 146 14 , , , 36297 146 15 but but CC 36297 146 16 fortunately fortunately RB 36297 146 17 most most JJS 36297 146 18 of of IN 36297 146 19 them -PRON- PRP 36297 146 20 are be VBP 36297 146 21 satisfactory satisfactory JJ 36297 146 22 for for IN 36297 146 23 practical practical JJ 36297 146 24 purposes purpose NNS 36297 146 25 . . . 36297 147 1 Only only RB 36297 147 2 a a DT 36297 147 3 part part NN 36297 147 4 of of IN 36297 147 5 what what WP 36297 147 6 is be VBZ 36297 147 7 perceived perceive VBN 36297 147 8 comes come VBZ 36297 147 9 through through IN 36297 147 10 the the DT 36297 147 11 senses sense NNS 36297 147 12 from from IN 36297 147 13 the the DT 36297 147 14 object object NN 36297 147 15 ; ; : 36297 147 16 the the DT 36297 147 17 remainder remainder NN 36297 147 18 always always RB 36297 147 19 comes come VBZ 36297 147 20 from from IN 36297 147 21 within within IN 36297 147 22 . . . 36297 148 1 In in IN 36297 148 2 fact fact NN 36297 148 3 , , , 36297 148 4 it -PRON- PRP 36297 148 5 is be VBZ 36297 148 6 the the DT 36297 148 7 visual visual JJ 36297 148 8 sense sense NN 36297 148 9 or or CC 36297 148 10 the the DT 36297 148 11 intellect intellect NN 36297 148 12 which which WDT 36297 148 13 is be VBZ 36297 148 14 responsible responsible JJ 36297 148 15 for for IN 36297 148 16 illusions illusion NNS 36297 148 17 of of IN 36297 148 18 the the DT 36297 148 19 various various JJ 36297 148 20 types type NNS 36297 148 21 to to TO 36297 148 22 be be VB 36297 148 23 discussed discuss VBN 36297 148 24 in in IN 36297 148 25 the the DT 36297 148 26 following following JJ 36297 148 27 chapters chapter NNS 36297 148 28 . . . 36297 149 1 Our -PRON- PRP$ 36297 149 2 past past JJ 36297 149 3 experiences experience NNS 36297 149 4 , , , 36297 149 5 associations association NNS 36297 149 6 , , , 36297 149 7 desires desire NNS 36297 149 8 , , , 36297 149 9 demands demand NNS 36297 149 10 , , , 36297 149 11 imaginings imagining NNS 36297 149 12 , , , 36297 149 13 and and CC 36297 149 14 other other JJ 36297 149 15 more more RBR 36297 149 16 or or CC 36297 149 17 less less RBR 36297 149 18 obscure obscure JJ 36297 149 19 influences influence NNS 36297 149 20 create create VBP 36297 149 21 illusions illusion NNS 36297 149 22 . . . 36297 150 1 An an DT 36297 150 2 illusion illusion NN 36297 150 3 does do VBZ 36297 150 4 not not RB 36297 150 5 generally generally RB 36297 150 6 exist exist VB 36297 150 7 physically physically RB 36297 150 8 but but CC 36297 150 9 it -PRON- PRP 36297 150 10 is be VBZ 36297 150 11 difficult difficult JJ 36297 150 12 in in IN 36297 150 13 some some DT 36297 150 14 cases case NNS 36297 150 15 to to TO 36297 150 16 explain explain VB 36297 150 17 the the DT 36297 150 18 cause cause NN 36297 150 19 . . . 36297 151 1 Certainly certainly RB 36297 151 2 there there EX 36297 151 3 are be VBP 36297 151 4 many many JJ 36297 151 5 cases case NNS 36297 151 6 of of IN 36297 151 7 errors error NNS 36297 151 8 of of IN 36297 151 9 judgment judgment NN 36297 151 10 . . . 36297 152 1 A a DT 36297 152 2 mistaken mistaken JJ 36297 152 3 estimate estimate NN 36297 152 4 of of IN 36297 152 5 the the DT 36297 152 6 distance distance NN 36297 152 7 of of IN 36297 152 8 a a DT 36297 152 9 mountain mountain NN 36297 152 10 is be VBZ 36297 152 11 due due JJ 36297 152 12 to to IN 36297 152 13 an an DT 36297 152 14 error error NN 36297 152 15 of of IN 36297 152 16 judgment judgment NN 36297 152 17 but but CC 36297 152 18 the the DT 36297 152 19 perception perception NN 36297 152 20 of of IN 36297 152 21 a a DT 36297 152 22 piece piece NN 36297 152 23 of of IN 36297 152 24 white white JJ 36297 152 25 paper paper NN 36297 152 26 as as IN 36297 152 27 pink pink JJ 36297 152 28 on on IN 36297 152 29 a a DT 36297 152 30 green green JJ 36297 152 31 background background NN 36297 152 32 is be VBZ 36297 152 33 an an DT 36297 152 34 error error NN 36297 152 35 of of IN 36297 152 36 sense sense NN 36297 152 37 . . . 36297 153 1 It -PRON- PRP 36297 153 2 is be VBZ 36297 153 3 realized realize VBN 36297 153 4 that that IN 36297 153 5 the the DT 36297 153 6 foregoing foregoing JJ 36297 153 7 comparison comparison NN 36297 153 8 leads lead VBZ 36297 153 9 directly directly RB 36297 153 10 to to IN 36297 153 11 one one CD 36297 153 12 of of IN 36297 153 13 the the DT 36297 153 14 most most RBS 36297 153 15 controversial controversial JJ 36297 153 16 questions question NNS 36297 153 17 in in IN 36297 153 18 psychology psychology NN 36297 153 19 , , , 36297 153 20 but but CC 36297 153 21 there there EX 36297 153 22 is be VBZ 36297 153 23 no no DT 36297 153 24 intention intention NN 36297 153 25 on on IN 36297 153 26 the the DT 36297 153 27 author author NN 36297 153 28 's 's POS 36297 153 29 part part NN 36297 153 30 to to TO 36297 153 31 cling cling VB 36297 153 32 dogmatically dogmatically RB 36297 153 33 to to IN 36297 153 34 the the DT 36297 153 35 opinions opinion NNS 36297 153 36 expressed express VBN 36297 153 37 . . . 36297 154 1 In in IN 36297 154 2 fact fact NN 36297 154 3 , , , 36297 154 4 discussions discussion NNS 36297 154 5 of of IN 36297 154 6 the the DT 36297 154 7 psychological psychological JJ 36297 154 8 judgment judgment NN 36297 154 9 involved involve VBN 36297 154 10 in in IN 36297 154 11 the the DT 36297 154 12 presentations presentation NNS 36297 154 13 of of IN 36297 154 14 the the DT 36297 154 15 visual visual JJ 36297 154 16 sense sense NN 36297 154 17 are be VBP 36297 154 18 not not RB 36297 154 19 introduced introduce VBN 36297 154 20 with with IN 36297 154 21 the the DT 36297 154 22 hope hope NN 36297 154 23 of of IN 36297 154 24 stating state VBG 36297 154 25 the the DT 36297 154 26 final final JJ 36297 154 27 word word NN 36297 154 28 but but CC 36297 154 29 to to TO 36297 154 30 give give VB 36297 154 31 the the DT 36297 154 32 reader reader NN 36297 154 33 an an DT 36297 154 34 idea idea NN 36297 154 35 of of IN 36297 154 36 the the DT 36297 154 37 inner inner JJ 36297 154 38 process process NN 36297 154 39 of of IN 36297 154 40 perception perception NN 36297 154 41 . . . 36297 155 1 The the DT 36297 155 2 final final JJ 36297 155 3 word word NN 36297 155 4 will will MD 36297 155 5 be be VB 36297 155 6 left leave VBN 36297 155 7 to to IN 36297 155 8 the the DT 36297 155 9 psychologists psychologist NNS 36297 155 10 but but CC 36297 155 11 it -PRON- PRP 36297 155 12 appears appear VBZ 36297 155 13 possible possible JJ 36297 155 14 that that IN 36297 155 15 it -PRON- PRP 36297 155 16 may may MD 36297 155 17 never never RB 36297 155 18 be be VB 36297 155 19 formulated formulate VBN 36297 155 20 . . . 36297 156 1 In in IN 36297 156 2 general general JJ 36297 156 3 , , , 36297 156 4 a a DT 36297 156 5 tree tree NN 36297 156 6 appears appear VBZ 36297 156 7 of of IN 36297 156 8 greater great JJR 36297 156 9 length length NN 36297 156 10 when when WRB 36297 156 11 standing stand VBG 36297 156 12 than than IN 36297 156 13 when when WRB 36297 156 14 lying lie VBG 36297 156 15 upon upon IN 36297 156 16 the the DT 36297 156 17 ground ground NN 36297 156 18 . . . 36297 157 1 Lines line NNS 36297 157 2 , , , 36297 157 3 areas area NNS 36297 157 4 , , , 36297 157 5 and and CC 36297 157 6 masses masse NNS 36297 157 7 are be VBP 36297 157 8 not not RB 36297 157 9 perceived perceive VBN 36297 157 10 in in IN 36297 157 11 their -PRON- PRP$ 36297 157 12 actual actual JJ 36297 157 13 physical physical JJ 36297 157 14 relations relation NNS 36297 157 15 . . . 36297 158 1 The the DT 36297 158 2 appearance appearance NN 36297 158 3 of of IN 36297 158 4 a a DT 36297 158 5 colored colored JJ 36297 158 6 object object NN 36297 158 7 varies vary VBZ 36297 158 8 considerably considerably RB 36297 158 9 with with IN 36297 158 10 its -PRON- PRP$ 36297 158 11 environment environment NN 36297 158 12 . . . 36297 159 1 The the DT 36297 159 2 sky sky NN 36297 159 3 is be VBZ 36297 159 4 not not RB 36297 159 5 perceived perceive VBN 36297 159 6 as as IN 36297 159 7 infinite infinite JJ 36297 159 8 space space NN 36297 159 9 nor nor CC 36297 159 10 as as IN 36297 159 11 a a DT 36297 159 12 hemispherical hemispherical JJ 36297 159 13 dome dome NN 36297 159 14 , , , 36297 159 15 but but CC 36297 159 16 as as IN 36297 159 17 a a DT 36297 159 18 flattened flattened JJ 36297 159 19 vault vault NN 36297 159 20 . . . 36297 160 1 The the DT 36297 160 2 moon moon NN 36297 160 3 apparently apparently RB 36297 160 4 diminishes diminish VBZ 36297 160 5 in in IN 36297 160 6 size size NN 36297 160 7 as as IN 36297 160 8 it -PRON- PRP 36297 160 9 rises rise VBZ 36297 160 10 toward toward IN 36297 160 11 the the DT 36297 160 12 zenith zenith NN 36297 160 13 . . . 36297 161 1 A a DT 36297 161 2 bright bright JJ 36297 161 3 object object NN 36297 161 4 appears appear VBZ 36297 161 5 larger large JJR 36297 161 6 than than IN 36297 161 7 a a DT 36297 161 8 dark dark JJ 36297 161 9 object object NN 36297 161 10 of of IN 36297 161 11 the the DT 36297 161 12 same same JJ 36297 161 13 physical physical JJ 36297 161 14 dimensions dimension NNS 36297 161 15 . . . 36297 162 1 Flat flat JJ 36297 162 2 areas area NNS 36297 162 3 may may MD 36297 162 4 appear appear VB 36297 162 5 to to TO 36297 162 6 have have VB 36297 162 7 a a DT 36297 162 8 third third JJ 36297 162 9 dimension dimension NN 36297 162 10 of of IN 36297 162 11 depth depth NN 36297 162 12 . . . 36297 163 1 And and CC 36297 163 2 so so RB 36297 163 3 on on RB 36297 163 4 . . . 36297 164 1 Illusions illusion NNS 36297 164 2 are be VBP 36297 164 3 so so RB 36297 164 4 numerous numerous JJ 36297 164 5 and and CC 36297 164 6 varied varied JJ 36297 164 7 that that IN 36297 164 8 they -PRON- PRP 36297 164 9 have have VBP 36297 164 10 long long RB 36297 164 11 challenged challenge VBN 36297 164 12 the the DT 36297 164 13 interest interest NN 36297 164 14 of of IN 36297 164 15 the the DT 36297 164 16 scientist scientist NN 36297 164 17 . . . 36297 165 1 They -PRON- PRP 36297 165 2 may may MD 36297 165 3 be be VB 36297 165 4 so so RB 36297 165 5 useful useful JJ 36297 165 6 or or CC 36297 165 7 even even RB 36297 165 8 so so RB 36297 165 9 disastrous disastrous JJ 36297 165 10 that that IN 36297 165 11 they -PRON- PRP 36297 165 12 have have VBP 36297 165 13 been be VBN 36297 165 14 utilized utilize VBN 36297 165 15 or or CC 36297 165 16 counteracted counteract VBN 36297 165 17 by by IN 36297 165 18 the the DT 36297 165 19 skilled skilled JJ 36297 165 20 artist artist NN 36297 165 21 or or CC 36297 165 22 artisan artisan NNP 36297 165 23 . . . 36297 166 1 The the DT 36297 166 2 architect architect NN 36297 166 3 and and CC 36297 166 4 painter painter NN 36297 166 5 have have VBP 36297 166 6 used use VBN 36297 166 7 or or CC 36297 166 8 avoided avoid VBN 36297 166 9 them -PRON- PRP 36297 166 10 . . . 36297 167 1 The the DT 36297 167 2 stage stage NN 36297 167 3 - - HYPH 36297 167 4 artist artist NN 36297 167 5 employs employ VBZ 36297 167 6 them -PRON- PRP 36297 167 7 to to TO 36297 167 8 carry carry VB 36297 167 9 the the DT 36297 167 10 audience audience NN 36297 167 11 in in IN 36297 167 12 its -PRON- PRP$ 36297 167 13 imagination imagination NN 36297 167 14 to to IN 36297 167 15 other other JJ 36297 167 16 environments environment NNS 36297 167 17 or or CC 36297 167 18 to to IN 36297 167 19 far far JJ 36297 167 20 countries country NNS 36297 167 21 . . . 36297 168 1 The the DT 36297 168 2 magician magician NN 36297 168 3 has have VBZ 36297 168 4 employed employ VBN 36297 168 5 them -PRON- PRP 36297 168 6 in in IN 36297 168 7 his -PRON- PRP$ 36297 168 8 entertainments entertainment NNS 36297 168 9 and and CC 36297 168 10 the the DT 36297 168 11 camoufleur camoufleur NN 36297 168 12 used use VBD 36297 168 13 them -PRON- PRP 36297 168 14 to to TO 36297 168 15 advantage advantage VB 36297 168 16 in in IN 36297 168 17 the the DT 36297 168 18 practice practice NN 36297 168 19 of of IN 36297 168 20 deception deception NN 36297 168 21 during during IN 36297 168 22 the the DT 36297 168 23 recent recent JJ 36297 168 24 war war NN 36297 168 25 . . . 36297 169 1 They -PRON- PRP 36297 169 2 are be VBP 36297 169 3 vastly vastly RB 36297 169 4 entertaining entertaining JJ 36297 169 5 , , , 36297 169 6 useful useful JJ 36297 169 7 , , , 36297 169 8 deceiving deceiving NN 36297 169 9 , , , 36297 169 10 or or CC 36297 169 11 disastrous disastrous JJ 36297 169 12 , , , 36297 169 13 depending depend VBG 36297 169 14 upon upon IN 36297 169 15 the the DT 36297 169 16 viewpoint viewpoint NN 36297 169 17 . . . 36297 170 1 Incidentally incidentally RB 36297 170 2 , , , 36297 170 3 a a DT 36297 170 4 few few JJ 36297 170 5 so so RB 36297 170 6 - - HYPH 36297 170 7 called call VBN 36297 170 8 illusions illusion NNS 36297 170 9 will will MD 36297 170 10 be be VB 36297 170 11 discussed discuss VBN 36297 170 12 which which WDT 36297 170 13 are be VBP 36297 170 14 not not RB 36297 170 15 due due JJ 36297 170 16 strictly strictly RB 36297 170 17 to to IN 36297 170 18 errors error NNS 36297 170 19 of of IN 36297 170 20 the the DT 36297 170 21 visual visual JJ 36297 170 22 sense sense NN 36297 170 23 or or CC 36297 170 24 of of IN 36297 170 25 the the DT 36297 170 26 intellect intellect NN 36297 170 27 . . . 36297 171 1 Examples example NNS 36297 171 2 of of IN 36297 171 3 these these DT 36297 171 4 are be VBP 36297 171 5 the the DT 36297 171 6 mirage mirage NN 36297 171 7 and and CC 36297 171 8 certain certain JJ 36297 171 9 optical optical JJ 36297 171 10 effects effect NNS 36297 171 11 employed employ VBN 36297 171 12 by by IN 36297 171 13 the the DT 36297 171 14 magician magician NN 36297 171 15 . . . 36297 172 1 In in IN 36297 172 2 such such JJ 36297 172 3 cases case NNS 36297 172 4 neither neither CC 36297 172 5 the the DT 36297 172 6 visual visual JJ 36297 172 7 sense sense NN 36297 172 8 nor nor CC 36297 172 9 the the DT 36297 172 10 intellect intellect NN 36297 172 11 errs err NNS 36297 172 12 . . . 36297 173 1 In in IN 36297 173 2 the the DT 36297 173 3 case case NN 36297 173 4 of of IN 36297 173 5 the the DT 36297 173 6 mirage mirage NN 36297 173 7 rays ray NNS 36297 173 8 of of IN 36297 173 9 light light NN 36297 173 10 coming come VBG 36297 173 11 from from IN 36297 173 12 the the DT 36297 173 13 object object NN 36297 173 14 to to IN 36297 173 15 the the DT 36297 173 16 eye eye NN 36297 173 17 are be VBP 36297 173 18 bent bent JJ 36297 173 19 from from IN 36297 173 20 their -PRON- PRP$ 36297 173 21 usual usual JJ 36297 173 22 straight straight JJ 36297 173 23 - - HYPH 36297 173 24 line line NN 36297 173 25 course course NN 36297 173 26 and and CC 36297 173 27 the the DT 36297 173 28 object object NN 36297 173 29 appears appear VBZ 36297 173 30 to to TO 36297 173 31 be be VB 36297 173 32 where where WRB 36297 173 33 it -PRON- PRP 36297 173 34 really really RB 36297 173 35 is be VBZ 36297 173 36 not not RB 36297 173 37 . . . 36297 174 1 However however RB 36297 174 2 , , , 36297 174 3 with with IN 36297 174 4 these these DT 36297 174 5 few few JJ 36297 174 6 exceptions exception NNS 36297 174 7 , , , 36297 174 8 which which WDT 36297 174 9 are be VBP 36297 174 10 introduced introduce VBN 36297 174 11 for for IN 36297 174 12 their -PRON- PRP$ 36297 174 13 specific specific JJ 36297 174 14 interest interest NN 36297 174 15 and and CC 36297 174 16 for for IN 36297 174 17 the the DT 36297 174 18 emphasis emphasis NN 36297 174 19 they -PRON- PRP 36297 174 20 give give VBP 36297 174 21 to to IN 36297 174 22 the the DT 36297 174 23 " " `` 36297 174 24 true true JJ 36297 174 25 " " '' 36297 174 26 illusion illusion NN 36297 174 27 , , , 36297 174 28 it -PRON- PRP 36297 174 29 will will MD 36297 174 30 be be VB 36297 174 31 understood understand VBN 36297 174 32 that that IN 36297 174 33 illusions illusion NNS 36297 174 34 in in IN 36297 174 35 general general JJ 36297 174 36 as as IN 36297 174 37 hereinafter hereinafter NNP 36297 174 38 discussed discuss VBN 36297 174 39 will will MD 36297 174 40 mean mean VB 36297 174 41 those those DT 36297 174 42 due due IN 36297 174 43 to to IN 36297 174 44 the the DT 36297 174 45 visual visual JJ 36297 174 46 mechanism mechanism NN 36297 174 47 or or CC 36297 174 48 to to IN 36297 174 49 errors error NNS 36297 174 50 of of IN 36297 174 51 judgment judgment NN 36297 174 52 or or CC 36297 174 53 intellect intellect NN 36297 174 54 . . . 36297 175 1 For for IN 36297 175 2 the the DT 36297 175 3 sake sake NN 36297 175 4 of of IN 36297 175 5 brevity brevity NN 36297 175 6 we -PRON- PRP 36297 175 7 might may MD 36297 175 8 say say VB 36297 175 9 that that IN 36297 175 10 they -PRON- PRP 36297 175 11 are be VBP 36297 175 12 those those DT 36297 175 13 due due JJ 36297 175 14 to to IN 36297 175 15 errors error NNS 36297 175 16 of of IN 36297 175 17 visual visual JJ 36297 175 18 perception perception NN 36297 175 19 . . . 36297 176 1 Furthermore furthermore RB 36297 176 2 , , , 36297 176 3 only only RB 36297 176 4 those those DT 36297 176 5 of of IN 36297 176 6 a a DT 36297 176 7 " " `` 36297 176 8 static static JJ 36297 176 9 " " '' 36297 176 10 type type NN 36297 176 11 will will MD 36297 176 12 be be VB 36297 176 13 considered consider VBN 36297 176 14 ; ; : 36297 176 15 that that RB 36297 176 16 is is RB 36297 176 17 , , , 36297 176 18 the the DT 36297 176 19 vast vast JJ 36297 176 20 complexities complexity NNS 36297 176 21 due due IN 36297 176 22 to to IN 36297 176 23 motion motion NN 36297 176 24 are be VBP 36297 176 25 not not RB 36297 176 26 of of IN 36297 176 27 interest interest NN 36297 176 28 from from IN 36297 176 29 the the DT 36297 176 30 viewpoint viewpoint NN 36297 176 31 of of IN 36297 176 32 the the DT 36297 176 33 aims aim NNS 36297 176 34 of of IN 36297 176 35 this this DT 36297 176 36 book book NN 36297 176 37 . . . 36297 177 1 There there EX 36297 177 2 are be VBP 36297 177 3 two two CD 36297 177 4 well well RB 36297 177 5 - - HYPH 36297 177 6 known know VBN 36297 177 7 types type NNS 36297 177 8 of of IN 36297 177 9 misleading mislead VBG 36297 177 10 perceptions perception NNS 36297 177 11 , , , 36297 177 12 namely namely RB 36297 177 13 illusions illusion NNS 36297 177 14 and and CC 36297 177 15 hallucinations hallucination NNS 36297 177 16 . . . 36297 178 1 If if IN 36297 178 2 , , , 36297 178 3 for for IN 36297 178 4 example example NN 36297 178 5 , , , 36297 178 6 two two CD 36297 178 7 lines line NNS 36297 178 8 appear appear VBP 36297 178 9 of of IN 36297 178 10 equal equal JJ 36297 178 11 length length NN 36297 178 12 and and CC 36297 178 13 are be VBP 36297 178 14 not not RB 36297 178 15 , , , 36297 178 16 the the DT 36297 178 17 error error NN 36297 178 18 in in IN 36297 178 19 judgment judgment NN 36297 178 20 is be VBZ 36297 178 21 responsible responsible JJ 36297 178 22 for for IN 36297 178 23 what what WP 36297 178 24 is be VBZ 36297 178 25 termed term VBN 36297 178 26 an an DT 36297 178 27 " " `` 36297 178 28 illusion illusion NN 36297 178 29 . . . 36297 178 30 " " '' 36297 179 1 If if IN 36297 179 2 the the DT 36297 179 3 perceptual perceptual JJ 36297 179 4 consciousness consciousness NN 36297 179 5 of of IN 36297 179 6 an an DT 36297 179 7 object object NN 36297 179 8 appears appear VBZ 36297 179 9 although although IN 36297 179 10 the the DT 36297 179 11 object object NN 36297 179 12 is be VBZ 36297 179 13 not not RB 36297 179 14 present present JJ 36297 179 15 , , , 36297 179 16 the the DT 36297 179 17 result result NN 36297 179 18 is be VBZ 36297 179 19 termed term VBN 36297 179 20 an an DT 36297 179 21 " " `` 36297 179 22 hallucination hallucination NN 36297 179 23 . . . 36297 179 24 " " '' 36297 180 1 For for IN 36297 180 2 example example NN 36297 180 3 , , , 36297 180 4 if if IN 36297 180 5 something something NN 36297 180 6 is be VBZ 36297 180 7 seen see VBN 36297 180 8 which which WDT 36297 180 9 does do VBZ 36297 180 10 not not RB 36297 180 11 exist exist VB 36297 180 12 , , , 36297 180 13 the the DT 36297 180 14 essential essential JJ 36297 180 15 factors factor NNS 36297 180 16 are be VBP 36297 180 17 supplied supply VBN 36297 180 18 by by IN 36297 180 19 the the DT 36297 180 20 imagination imagination NN 36297 180 21 . . . 36297 181 1 Shadows shadow NNS 36297 181 2 are be VBP 36297 181 3 often often RB 36297 181 4 wrought work VBN 36297 181 5 by by IN 36297 181 6 the the DT 36297 181 7 imagination imagination NN 36297 181 8 into into IN 36297 181 9 animals animal NNS 36297 181 10 and and CC 36297 181 11 even even RB 36297 181 12 human human JJ 36297 181 13 beings being NNS 36297 181 14 bent bent JJ 36297 181 15 upon upon IN 36297 181 16 evil evil JJ 36297 181 17 purpose purpose NN 36297 181 18 . . . 36297 182 1 Ghosts ghost NNS 36297 182 2 are be VBP 36297 182 3 created create VBN 36297 182 4 in in IN 36297 182 5 this this DT 36297 182 6 manner manner NN 36297 182 7 . . . 36297 183 1 Hallucinations hallucination NNS 36297 183 2 depend depend VBP 36297 183 3 largely largely RB 36297 183 4 upon upon IN 36297 183 5 the the DT 36297 183 6 recency recency NN 36297 183 7 , , , 36297 183 8 frequency frequency NN 36297 183 9 , , , 36297 183 10 and and CC 36297 183 11 vividness vividness NN 36297 183 12 of of IN 36297 183 13 past past JJ 36297 183 14 experience experience NN 36297 183 15 . . . 36297 184 1 A a DT 36297 184 2 consideration consideration NN 36297 184 3 of of IN 36297 184 4 this this DT 36297 184 5 type type NN 36297 184 6 of of IN 36297 184 7 misleading mislead VBG 36297 184 8 perception perception NN 36297 184 9 does do VBZ 36297 184 10 not not RB 36297 184 11 advance advance VB 36297 184 12 the the DT 36297 184 13 aims aim NNS 36297 184 14 of of IN 36297 184 15 this this DT 36297 184 16 book book NN 36297 184 17 and and CC 36297 184 18 therefore therefore RB 36297 184 19 will will MD 36297 184 20 be be VB 36297 184 21 omitted omit VBN 36297 184 22 . . . 36297 185 1 The the DT 36297 185 2 connection connection NN 36297 185 3 between between IN 36297 185 4 the the DT 36297 185 5 material material NN 36297 185 6 and and CC 36297 185 7 mental mental JJ 36297 185 8 in in IN 36297 185 9 vision vision NN 36297 185 10 is be VBZ 36297 185 11 incomprehensible incomprehensible JJ 36297 185 12 and and CC 36297 185 13 apparently apparently RB 36297 185 14 must must MD 36297 185 15 ever ever RB 36297 185 16 remain remain VB 36297 185 17 so so RB 36297 185 18 . . . 36297 186 1 Objects object NNS 36297 186 2 emit emit VBP 36297 186 3 or or CC 36297 186 4 reflect reflect VBP 36297 186 5 light light NN 36297 186 6 and and CC 36297 186 7 the the DT 36297 186 8 optical optical JJ 36297 186 9 mechanism mechanism NN 36297 186 10 known know VBN 36297 186 11 as as IN 36297 186 12 the the DT 36297 186 13 eye eye NN 36297 186 14 focuses focus VBZ 36297 186 15 images image NNS 36297 186 16 of of IN 36297 186 17 the the DT 36297 186 18 objects object NNS 36297 186 19 upon upon IN 36297 186 20 the the DT 36297 186 21 retina retina NNP 36297 186 22 . . . 36297 187 1 Messages message NNS 36297 187 2 are be VBP 36297 187 3 then then RB 36297 187 4 carried carry VBN 36297 187 5 to to IN 36297 187 6 the the DT 36297 187 7 brain brain NN 36297 187 8 where where WRB 36297 187 9 certain certain JJ 36297 187 10 molecular molecular JJ 36297 187 11 vibrations vibration NNS 36297 187 12 take take VBP 36297 187 13 place place NN 36297 187 14 . . . 36297 188 1 The the DT 36297 188 2 physiologist physiologist NN 36297 188 3 records record VBZ 36297 188 4 certain certain JJ 36297 188 5 physical physical JJ 36297 188 6 and and CC 36297 188 7 chemical chemical JJ 36297 188 8 effects effect NNS 36297 188 9 in in IN 36297 188 10 the the DT 36297 188 11 muscles muscle NNS 36297 188 12 , , , 36297 188 13 nerves nerve NNS 36297 188 14 , , , 36297 188 15 and and CC 36297 188 16 brain brain NN 36297 188 17 and and CC 36297 188 18 behold behold NN 36297 188 19 ! ! . 36297 189 1 there there EX 36297 189 2 appears appear VBZ 36297 189 3 consciousness consciousness NN 36297 189 4 , , , 36297 189 5 sensations sensation NNS 36297 189 6 , , , 36297 189 7 thoughts thought NNS 36297 189 8 , , , 36297 189 9 desires desire NNS 36297 189 10 , , , 36297 189 11 and and CC 36297 189 12 volitions volition NNS 36297 189 13 . . . 36297 190 1 How how WRB 36297 190 2 ? ? . 36297 191 1 and and CC 36297 191 2 , , , 36297 191 3 Why why WRB 36297 191 4 ? ? . 36297 192 1 are be VBP 36297 192 2 questions question NNS 36297 192 3 which which WDT 36297 192 4 may may MD 36297 192 5 never never RB 36297 192 6 be be VB 36297 192 7 answered answer VBN 36297 192 8 . . . 36297 193 1 It -PRON- PRP 36297 193 2 is be VBZ 36297 193 3 dangerous dangerous JJ 36297 193 4 to to TO 36297 193 5 use use VB 36297 193 6 the the DT 36297 193 7 word word NN 36297 193 8 _ _ NNP 36297 193 9 never never RB 36297 193 10 _ _ NNP 36297 193 11 , , , 36297 193 12 but but CC 36297 193 13 the the DT 36297 193 14 ultimate ultimate JJ 36297 193 15 answers answer NNS 36297 193 16 to to IN 36297 193 17 those those DT 36297 193 18 questions question NNS 36297 193 19 appear appear VBP 36297 193 20 to to TO 36297 193 21 be be VB 36297 193 22 so so RB 36297 193 23 remote remote JJ 36297 193 24 that that IN 36297 193 25 it -PRON- PRP 36297 193 26 discourages discourage VBZ 36297 193 27 one one CD 36297 193 28 from from IN 36297 193 29 proceeding proceed VBG 36297 193 30 far far RB 36297 193 31 over over IN 36297 193 32 the the DT 36297 193 33 hazy hazy NN 36297 193 34 course course NN 36297 193 35 which which WDT 36297 193 36 leads lead VBZ 36297 193 37 toward toward IN 36297 193 38 them -PRON- PRP 36297 193 39 . . . 36297 194 1 In in IN 36297 194 2 fact fact NN 36297 194 3 , , , 36297 194 4 it -PRON- PRP 36297 194 5 does do VBZ 36297 194 6 not not RB 36297 194 7 appreciably appreciably RB 36297 194 8 further far RBR 36297 194 9 the the DT 36297 194 10 aims aim NNS 36297 194 11 of of IN 36297 194 12 this this DT 36297 194 13 book book NN 36297 194 14 to to TO 36297 194 15 devote devote VB 36297 194 16 much much JJ 36297 194 17 space space NN 36297 194 18 to to IN 36297 194 19 efforts effort NNS 36297 194 20 toward toward IN 36297 194 21 explanation explanation NN 36297 194 22 . . . 36297 195 1 In in IN 36297 195 2 covering cover VBG 36297 195 3 this this DT 36297 195 4 vast vast JJ 36297 195 5 and and CC 36297 195 6 complex complex JJ 36297 195 7 field field NN 36297 195 8 there there EX 36297 195 9 are be VBP 36297 195 10 multitudes multitude NNS 36297 195 11 of of IN 36297 195 12 facts fact NNS 36297 195 13 , , , 36297 195 14 many many JJ 36297 195 15 hypotheses hypothesis NNS 36297 195 16 , , , 36297 195 17 and and CC 36297 195 18 numerous numerous JJ 36297 195 19 theories theory NNS 36297 195 20 from from IN 36297 195 21 which which WDT 36297 195 22 to to TO 36297 195 23 choose choose VB 36297 195 24 . . . 36297 196 1 Judgment judgment NN 36297 196 2 dictates dictate VBZ 36297 196 3 that that IN 36297 196 4 of of IN 36297 196 5 the the DT 36297 196 6 limited limited JJ 36297 196 7 space space NN 36297 196 8 most most JJS 36297 196 9 of of IN 36297 196 10 it -PRON- PRP 36297 196 11 be be VB 36297 196 12 given give VBN 36297 196 13 to to IN 36297 196 14 the the DT 36297 196 15 presentation presentation NN 36297 196 16 of of IN 36297 196 17 representative representative JJ 36297 196 18 facts fact NNS 36297 196 19 . . . 36297 197 1 This this DT 36297 197 2 is be VBZ 36297 197 3 the the DT 36297 197 4 reasoning reasoning NN 36297 197 5 which which WDT 36297 197 6 led lead VBD 36297 197 7 to to IN 36297 197 8 the the DT 36297 197 9 formulation formulation NN 36297 197 10 of of IN 36297 197 11 the the DT 36297 197 12 outline outline NN 36297 197 13 of of IN 36297 197 14 chapters chapter NNS 36297 197 15 . . . 36297 198 1 Owing owe VBG 36297 198 2 to to IN 36297 198 3 the the DT 36297 198 4 vast vast JJ 36297 198 5 complex complex NN 36297 198 6 beyond beyond IN 36297 198 7 the the DT 36297 198 8 physical physical JJ 36297 198 9 phenomena phenomenon NNS 36297 198 10 , , , 36297 198 11 physical physical JJ 36297 198 12 measurements measurement NNS 36297 198 13 upon upon IN 36297 198 14 objects object NNS 36297 198 15 and and CC 36297 198 16 space space NN 36297 198 17 which which WDT 36297 198 18 have have VBP 36297 198 19 done do VBN 36297 198 20 so so RB 36297 198 21 much much RB 36297 198 22 toward toward IN 36297 198 23 building build VBG 36297 198 24 a a DT 36297 198 25 solid solid JJ 36297 198 26 foundation foundation NN 36297 198 27 for for IN 36297 198 28 scientific scientific JJ 36297 198 29 knowledge knowledge NN 36297 198 30 fail fail VBP 36297 198 31 ultimately ultimately RB 36297 198 32 to to TO 36297 198 33 provide provide VB 36297 198 34 an an DT 36297 198 35 exact exact JJ 36297 198 36 mathematical mathematical JJ 36297 198 37 picture picture NN 36297 198 38 of of IN 36297 198 39 that that DT 36297 198 40 which which WDT 36297 198 41 is be VBZ 36297 198 42 perceived perceive VBN 36297 198 43 . . . 36297 199 1 Much much JJ 36297 199 2 of of IN 36297 199 3 the the DT 36297 199 4 author author NN 36297 199 5 's 's POS 36297 199 6 previous previous JJ 36297 199 7 work work NN 36297 199 8 has have VBZ 36297 199 9 been be VBN 36297 199 10 devoted devote VBN 36297 199 11 to to IN 36297 199 12 the the DT 36297 199 13 physical physical JJ 36297 199 14 realities reality NNS 36297 199 15 but but CC 36297 199 16 the the DT 36297 199 17 ever ever RB 36297 199 18 - - HYPH 36297 199 19 present present JJ 36297 199 20 differences difference NNS 36297 199 21 between between IN 36297 199 22 physical physical JJ 36297 199 23 and and CC 36297 199 24 perceptive perceptive JJ 36297 199 25 realities reality NNS 36297 199 26 have have VBP 36297 199 27 emphasized emphasize VBN 36297 199 28 the the DT 36297 199 29 need need NN 36297 199 30 for for IN 36297 199 31 considering consider VBG 36297 199 32 the the DT 36297 199 33 latter latter JJ 36297 199 34 as as RB 36297 199 35 well well RB 36297 199 36 . . . 36297 200 1 Illusions illusion NNS 36297 200 2 are be VBP 36297 200 3 legion legion NN 36297 200 4 . . . 36297 201 1 They -PRON- PRP 36297 201 2 greet greet VBP 36297 201 3 the the DT 36297 201 4 careful careful JJ 36297 201 5 observer observer NN 36297 201 6 on on IN 36297 201 7 every every DT 36297 201 8 hand hand NN 36297 201 9 . . . 36297 202 1 They -PRON- PRP 36297 202 2 play play VBP 36297 202 3 a a DT 36297 202 4 prominent prominent JJ 36297 202 5 part part NN 36297 202 6 in in IN 36297 202 7 our -PRON- PRP$ 36297 202 8 appreciation appreciation NN 36297 202 9 of of IN 36297 202 10 the the DT 36297 202 11 physical physical JJ 36297 202 12 world world NN 36297 202 13 . . . 36297 203 1 Sometimes sometimes RB 36297 203 2 they -PRON- PRP 36297 203 3 must must MD 36297 203 4 be be VB 36297 203 5 avoided avoid VBN 36297 203 6 , , , 36297 203 7 but but CC 36297 203 8 often often RB 36297 203 9 they -PRON- PRP 36297 203 10 may may MD 36297 203 11 be be VB 36297 203 12 put put VBN 36297 203 13 to to IN 36297 203 14 work work NN 36297 203 15 in in IN 36297 203 16 various various JJ 36297 203 17 arts art NNS 36297 203 18 . . . 36297 204 1 Their -PRON- PRP$ 36297 204 2 widespread widespread JJ 36297 204 3 existence existence NN 36297 204 4 and and CC 36297 204 5 their -PRON- PRP$ 36297 204 6 forcefulness forcefulness NN 36297 204 7 make make VBP 36297 204 8 visual visual JJ 36297 204 9 perception perception NN 36297 204 10 the the DT 36297 204 11 final final JJ 36297 204 12 judge judge NN 36297 204 13 in in IN 36297 204 14 decoration decoration NN 36297 204 15 , , , 36297 204 16 in in IN 36297 204 17 painting painting NN 36297 204 18 , , , 36297 204 19 in in IN 36297 204 20 architecture architecture NN 36297 204 21 , , , 36297 204 22 in in IN 36297 204 23 landscaping landscaping NN 36297 204 24 , , , 36297 204 25 in in IN 36297 204 26 lighting lighting NN 36297 204 27 , , , 36297 204 28 and and CC 36297 204 29 in in IN 36297 204 30 other other JJ 36297 204 31 activities activity NNS 36297 204 32 . . . 36297 205 1 The the DT 36297 205 2 ultimate ultimate JJ 36297 205 3 limitation limitation NN 36297 205 4 of of IN 36297 205 5 measurements measurement NNS 36297 205 6 with with IN 36297 205 7 physical physical JJ 36297 205 8 instruments instrument NNS 36297 205 9 leaves leave VBZ 36297 205 10 this this DT 36297 205 11 responsibility responsibility NN 36297 205 12 to to IN 36297 205 13 the the DT 36297 205 14 intellect intellect NN 36297 205 15 . . . 36297 206 1 The the DT 36297 206 2 mental mental JJ 36297 206 3 being being NN 36297 206 4 is be VBZ 36297 206 5 impressed impressed JJ 36297 206 6 with with IN 36297 206 7 things thing NNS 36297 206 8 as as IN 36297 206 9 perceived perceive VBN 36297 206 10 , , , 36297 206 11 not not RB 36297 206 12 with with IN 36297 206 13 things thing NNS 36297 206 14 as as IN 36297 206 15 they -PRON- PRP 36297 206 16 are be VBP 36297 206 17 . . . 36297 207 1 It -PRON- PRP 36297 207 2 is be VBZ 36297 207 3 believed believe VBN 36297 207 4 that that IN 36297 207 5 this this DT 36297 207 6 intellectual intellectual JJ 36297 207 7 or or CC 36297 207 8 judiciary judiciary NN 36297 207 9 phase phase NN 36297 207 10 which which WDT 36297 207 11 plays play VBZ 36297 207 12 such such PDT 36297 207 13 a a DT 36297 207 14 part part NN 36297 207 15 in in IN 36297 207 16 visual visual JJ 36297 207 17 perception perception NN 36297 207 18 will will MD 36297 207 19 be be VB 36297 207 20 best well RBS 36297 207 21 brought bring VBN 36297 207 22 out out RP 36297 207 23 by by IN 36297 207 24 examples example NNS 36297 207 25 of of IN 36297 207 26 various various JJ 36297 207 27 types type NNS 36297 207 28 of of IN 36297 207 29 static static JJ 36297 207 30 illusions illusion NNS 36297 207 31 coupled couple VBN 36297 207 32 with with IN 36297 207 33 certain certain JJ 36297 207 34 facts fact NNS 36297 207 35 pertaining pertain VBG 36297 207 36 to to IN 36297 207 37 the the DT 36297 207 38 eye eye NN 36297 207 39 and and CC 36297 207 40 to to IN 36297 207 41 the the DT 36297 207 42 visual visual JJ 36297 207 43 process process NN 36297 207 44 as as IN 36297 207 45 a a DT 36297 207 46 whole whole NN 36297 207 47 . . . 36297 208 1 In in IN 36297 208 2 special special JJ 36297 208 3 simple simple JJ 36297 208 4 cases case NNS 36297 208 5 it -PRON- PRP 36297 208 6 is be VBZ 36297 208 7 not not RB 36297 208 8 difficult difficult JJ 36297 208 9 to to TO 36297 208 10 determine determine VB 36297 208 11 when when WRB 36297 208 12 or or CC 36297 208 13 how how WRB 36297 208 14 nearly nearly RB 36297 208 15 a a DT 36297 208 16 perception perception NN 36297 208 17 is be VBZ 36297 208 18 true true JJ 36297 208 19 but but CC 36297 208 20 in in IN 36297 208 21 general general JJ 36297 208 22 , , , 36297 208 23 agreement agreement NN 36297 208 24 among among IN 36297 208 25 normal normal JJ 36297 208 26 persons person NNS 36297 208 27 is be VBZ 36297 208 28 necessary necessary JJ 36297 208 29 owing owing NN 36297 208 30 to to IN 36297 208 31 the the DT 36297 208 32 absence absence NN 36297 208 33 of of IN 36297 208 34 any any DT 36297 208 35 definite definite JJ 36297 208 36 measuring measure VBG 36297 208 37 device device NN 36297 208 38 which which WDT 36297 208 39 will will MD 36297 208 40 span span VB 36297 208 41 the the DT 36297 208 42 gap gap NN 36297 208 43 between between IN 36297 208 44 the the DT 36297 208 45 perception perception NN 36297 208 46 and and CC 36297 208 47 the the DT 36297 208 48 objective objective JJ 36297 208 49 reality reality NN 36297 208 50 . . . 36297 209 1 Illusions illusion NNS 36297 209 2 are be VBP 36297 209 3 sometimes sometimes RB 36297 209 4 called call VBN 36297 209 5 " " `` 36297 209 6 errors error NNS 36297 209 7 of of IN 36297 209 8 sense sense NN 36297 209 9 " " '' 36297 209 10 and and CC 36297 209 11 some some DT 36297 209 12 of of IN 36297 209 13 them -PRON- PRP 36297 209 14 are be VBP 36297 209 15 such such JJ 36297 209 16 , , , 36297 209 17 but but CC 36297 209 18 often often RB 36297 209 19 they -PRON- PRP 36297 209 20 are be VBP 36297 209 21 errors error NNS 36297 209 22 of of IN 36297 209 23 the the DT 36297 209 24 intellect intellect NN 36297 209 25 . . . 36297 210 1 The the DT 36297 210 2 senses sense NNS 36297 210 3 may may MD 36297 210 4 deliver deliver VB 36297 210 5 correctly correctly RB 36297 210 6 but but CC 36297 210 7 error error NN 36297 210 8 may may MD 36297 210 9 arise arise VB 36297 210 10 from from IN 36297 210 11 imagination imagination NN 36297 210 12 , , , 36297 210 13 inexperience inexperience NN 36297 210 14 , , , 36297 210 15 false false JJ 36297 210 16 assumptions assumption NNS 36297 210 17 , , , 36297 210 18 and and CC 36297 210 19 incorrect incorrect JJ 36297 210 20 associations association NNS 36297 210 21 , , , 36297 210 22 and and CC 36297 210 23 the the DT 36297 210 24 recency recency NN 36297 210 25 , , , 36297 210 26 frequency frequency NN 36297 210 27 , , , 36297 210 28 and and CC 36297 210 29 vividness vividness NN 36297 210 30 of of IN 36297 210 31 past past JJ 36297 210 32 experience experience NN 36297 210 33 . . . 36297 211 1 The the DT 36297 211 2 gifts gift NNS 36297 211 3 of of IN 36297 211 4 sight sight NN 36297 211 5 are be VBP 36297 211 6 augmented augment VBN 36297 211 7 by by IN 36297 211 8 the the DT 36297 211 9 mind mind NN 36297 211 10 with with IN 36297 211 11 judgments judgment NNS 36297 211 12 based base VBN 36297 211 13 upon upon IN 36297 211 14 experience experience NN 36297 211 15 with with IN 36297 211 16 these these DT 36297 211 17 gifts gift NNS 36297 211 18 . . . 36297 212 1 The the DT 36297 212 2 direct direct JJ 36297 212 3 data datum NNS 36297 212 4 delivered deliver VBN 36297 212 5 by by IN 36297 212 6 the the DT 36297 212 7 visual visual JJ 36297 212 8 sense sense NN 36297 212 9 are be VBP 36297 212 10 light light JJ 36297 212 11 , , , 36297 212 12 intensity intensity NN 36297 212 13 , , , 36297 212 14 color color NN 36297 212 15 , , , 36297 212 16 direction direction NN 36297 212 17 . . . 36297 213 1 These these DT 36297 213 2 may may MD 36297 213 3 be be VB 36297 213 4 considered consider VBN 36297 213 5 as as IN 36297 213 6 simple simple JJ 36297 213 7 or or CC 36297 213 8 elemental elemental JJ 36297 213 9 sensations sensation NNS 36297 213 10 because because IN 36297 213 11 they -PRON- PRP 36297 213 12 can can MD 36297 213 13 not not RB 36297 213 14 be be VB 36297 213 15 further further RB 36297 213 16 simplified simplify VBN 36297 213 17 or or CC 36297 213 18 analyzed analyze VBN 36297 213 19 . . . 36297 214 1 At at IN 36297 214 2 this this DT 36297 214 3 point point NN 36297 214 4 it -PRON- PRP 36297 214 5 is be VBZ 36297 214 6 hoped hope VBN 36297 214 7 that that IN 36297 214 8 no no DT 36297 214 9 controversy controversy NN 36297 214 10 with with IN 36297 214 11 the the DT 36297 214 12 psychologist psychologist NN 36297 214 13 will will MD 36297 214 14 be be VB 36297 214 15 provoked provoke VBN 36297 214 16 . . . 36297 215 1 In in IN 36297 215 2 the the DT 36297 215 3 space space NN 36297 215 4 available available JJ 36297 215 5 it -PRON- PRP 36297 215 6 appears appear VBZ 36297 215 7 unfruitful unfruitful JJ 36297 215 8 to to TO 36297 215 9 introduce introduce VB 36297 215 10 the the DT 36297 215 11 many many JJ 36297 215 12 qualifications qualification NNS 36297 215 13 necessary necessary JJ 36297 215 14 to to TO 36297 215 15 satisfy satisfy VB 36297 215 16 the the DT 36297 215 17 , , , 36297 215 18 as as RB 36297 215 19 yet yet RB 36297 215 20 uncertain uncertain JJ 36297 215 21 or or CC 36297 215 22 at at IN 36297 215 23 least least JJS 36297 215 24 conflicting conflicting JJ 36297 215 25 , , , 36297 215 26 definitions definition NNS 36297 215 27 and and CC 36297 215 28 theories theory NNS 36297 215 29 underlying underlie VBG 36297 215 30 the the DT 36297 215 31 science science NN 36297 215 32 of of IN 36297 215 33 psychology psychology NN 36297 215 34 . . . 36297 216 1 If if IN 36297 216 2 it -PRON- PRP 36297 216 3 is be VBZ 36297 216 4 necessary necessary JJ 36297 216 5 to to TO 36297 216 6 add add VB 36297 216 7 darkness darkness NN 36297 216 8 to to IN 36297 216 9 the the DT 36297 216 10 foregoing foregoing JJ 36297 216 11 group group NN 36297 216 12 of of IN 36297 216 13 elemental elemental JJ 36297 216 14 visual visual JJ 36297 216 15 sensations sensation NNS 36297 216 16 , , , 36297 216 17 this this DT 36297 216 18 will will MD 36297 216 19 gladly gladly RB 36297 216 20 be be VB 36297 216 21 agreed agree VBN 36297 216 22 to to IN 36297 216 23 . . . 36297 217 1 The the DT 36297 217 2 perceptions perception NNS 36297 217 3 of of IN 36297 217 4 outline outline NN 36297 217 5 - - HYPH 36297 217 6 form form NN 36297 217 7 and and CC 36297 217 8 surface surface NN 36297 217 9 - - HYPH 36297 217 10 contents content NNS 36297 217 11 perhaps perhaps RB 36297 217 12 rank rank VBP 36297 217 13 next next RB 36297 217 14 in in IN 36297 217 15 simplicity simplicity NN 36297 217 16 ; ; : 36297 217 17 however however RB 36297 217 18 , , , 36297 217 19 they -PRON- PRP 36297 217 20 may may MD 36297 217 21 be be VB 36297 217 22 analyzed analyze VBN 36297 217 23 into into IN 36297 217 24 directions direction NNS 36297 217 25 . . . 36297 218 1 The the DT 36297 218 2 perception perception NN 36297 218 3 of of IN 36297 218 4 these these DT 36297 218 5 is be VBZ 36297 218 6 so so RB 36297 218 7 direct direct JJ 36297 218 8 and and CC 36297 218 9 so so RB 36297 218 10 certain certain JJ 36297 218 11 that that IN 36297 218 12 it -PRON- PRP 36297 218 13 may may MD 36297 218 14 be be VB 36297 218 15 considered consider VBN 36297 218 16 to to TO 36297 218 17 be be VB 36297 218 18 immediate immediate JJ 36297 218 19 . . . 36297 219 1 A a DT 36297 219 2 ring ring NN 36297 219 3 of of IN 36297 219 4 points point NNS 36297 219 5 is be VBZ 36297 219 6 apparently apparently RB 36297 219 7 very very RB 36297 219 8 simple simple JJ 36297 219 9 and and CC 36297 219 10 it -PRON- PRP 36297 219 11 might may MD 36297 219 12 be be VB 36297 219 13 considered consider VBN 36297 219 14 a a DT 36297 219 15 direct direct JJ 36297 219 16 sense sense NN 36297 219 17 - - HYPH 36297 219 18 perception perception NN 36297 219 19 , , , 36297 219 20 but but CC 36297 219 21 it -PRON- PRP 36297 219 22 consists consist VBZ 36297 219 23 of of IN 36297 219 24 a a DT 36297 219 25 number number NN 36297 219 26 of of IN 36297 219 27 elemental elemental JJ 36297 219 28 directions direction NNS 36297 219 29 . . . 36297 220 1 The the DT 36297 220 2 perception perception NN 36297 220 3 of of IN 36297 220 4 solid solid JJ 36297 220 5 - - HYPH 36297 220 6 form form NN 36297 220 7 is be VBZ 36297 220 8 far far RB 36297 220 9 more more RBR 36297 220 10 complex complex JJ 36297 220 11 than than IN 36297 220 12 outline outline NN 36297 220 13 - - HYPH 36297 220 14 form form NN 36297 220 15 and and CC 36297 220 16 therefore therefore RB 36297 220 17 more more RBR 36297 220 18 liable liable JJ 36297 220 19 to to IN 36297 220 20 error error NN 36297 220 21 . . . 36297 221 1 It -PRON- PRP 36297 221 2 is be VBZ 36297 221 3 judged judge VBN 36297 221 4 partially partially RB 36297 221 5 by by IN 36297 221 6 binocular binocular JJ 36297 221 7 vision vision NN 36297 221 8 or or CC 36297 221 9 perspective perspective NN 36297 221 10 and and CC 36297 221 11 partly partly RB 36297 221 12 by by IN 36297 221 13 the the DT 36297 221 14 distribution distribution NN 36297 221 15 of of IN 36297 221 16 light light NN 36297 221 17 and and CC 36297 221 18 shade shade NN 36297 221 19 . . . 36297 222 1 Colors color NNS 36297 222 2 may may MD 36297 222 3 help help VB 36297 222 4 to to IN 36297 222 5 mold mold NN 36297 222 6 form form NN 36297 222 7 and and CC 36297 222 8 even even RB 36297 222 9 to to TO 36297 222 10 give give VB 36297 222 11 depth depth NN 36297 222 12 to to IN 36297 222 13 flat flat JJ 36297 222 14 surfaces surface NNS 36297 222 15 . . . 36297 223 1 For for IN 36297 223 2 example example NN 36297 223 3 , , , 36297 223 4 it -PRON- PRP 36297 223 5 is be VBZ 36297 223 6 well well RB 36297 223 7 known know VBN 36297 223 8 that that IN 36297 223 9 some some DT 36297 223 10 colors color NNS 36297 223 11 are be VBP 36297 223 12 " " `` 36297 223 13 advancing advance VBG 36297 223 14 " " '' 36297 223 15 and and CC 36297 223 16 others other NNS 36297 223 17 are be VBP 36297 223 18 " " `` 36297 223 19 retiring retire VBG 36297 223 20 . . . 36297 223 21 " " '' 36297 224 1 Perhaps perhaps RB 36297 224 2 of of IN 36297 224 3 still still RB 36297 224 4 greater great JJR 36297 224 5 complexity complexity NN 36297 224 6 are be VBP 36297 224 7 the the DT 36297 224 8 judgments judgment NNS 36297 224 9 of of IN 36297 224 10 size size NN 36297 224 11 and and CC 36297 224 12 of of IN 36297 224 13 distance distance NN 36297 224 14 . . . 36297 225 1 Many many JJ 36297 225 2 comparisons comparison NNS 36297 225 3 enter enter VBP 36297 225 4 such such JJ 36297 225 5 judgments judgment NNS 36297 225 6 . . . 36297 226 1 The the DT 36297 226 2 unconscious unconscious JJ 36297 226 3 acts act NNS 36297 226 4 of of IN 36297 226 5 the the DT 36297 226 6 muscles muscle NNS 36297 226 7 of of IN 36297 226 8 the the DT 36297 226 9 eye eye NN 36297 226 10 and and CC 36297 226 11 various various JJ 36297 226 12 external external JJ 36297 226 13 conditions condition NNS 36297 226 14 such such JJ 36297 226 15 as as IN 36297 226 16 the the DT 36297 226 17 clearness clearness NN 36297 226 18 of of IN 36297 226 19 the the DT 36297 226 20 atmosphere atmosphere NN 36297 226 21 play play VBP 36297 226 22 prominent prominent JJ 36297 226 23 parts part NNS 36297 226 24 in in IN 36297 226 25 influencing influence VBG 36297 226 26 judgment judgment NN 36297 226 27 . . . 36297 227 1 Upon upon IN 36297 227 2 these these DT 36297 227 3 are be VBP 36297 227 4 superposed superpose VBN 36297 227 5 the the DT 36297 227 6 numerous numerous JJ 36297 227 7 psycho psycho NN 36297 227 8 - - HYPH 36297 227 9 physiological physiological JJ 36297 227 10 phenomena phenomenon NNS 36297 227 11 of of IN 36297 227 12 color color NN 36297 227 13 , , , 36297 227 14 irradiation irradiation NN 36297 227 15 , , , 36297 227 16 etc etc FW 36297 227 17 . . . 36297 228 1 In in IN 36297 228 2 vision vision NN 36297 228 3 judgments judgment NNS 36297 228 4 are be VBP 36297 228 5 quickly quickly RB 36297 228 6 made make VBN 36297 228 7 and and CC 36297 228 8 the the DT 36297 228 9 process process NN 36297 228 10 apparently apparently RB 36297 228 11 is be VBZ 36297 228 12 largely largely RB 36297 228 13 outside outside IN 36297 228 14 of of IN 36297 228 15 consciousness consciousness NN 36297 228 16 . . . 36297 229 1 Higher high JJR 36297 229 2 and and CC 36297 229 3 more more RBR 36297 229 4 complex complex JJ 36297 229 5 visual visual JJ 36297 229 6 judgments judgment NNS 36297 229 7 pass pass VBP 36297 229 8 into into IN 36297 229 9 still still RB 36297 229 10 higher high JJR 36297 229 11 and and CC 36297 229 12 more more RBR 36297 229 13 complex complex JJ 36297 229 14 intellectual intellectual JJ 36297 229 15 judgments judgment NNS 36297 229 16 . . . 36297 230 1 All all PDT 36297 230 2 these these DT 36297 230 3 may may MD 36297 230 4 appear appear VB 36297 230 5 to to TO 36297 230 6 be be VB 36297 230 7 primary primary JJ 36297 230 8 , , , 36297 230 9 immediate immediate JJ 36297 230 10 , , , 36297 230 11 innate innate VBP 36297 230 12 , , , 36297 230 13 or or CC 36297 230 14 instinctive instinctive JJ 36297 230 15 and and CC 36297 230 16 therefore therefore RB 36297 230 17 , , , 36297 230 18 certain certain JJ 36297 230 19 , , , 36297 230 20 but but CC 36297 230 21 the the DT 36297 230 22 fruits fruit NNS 36297 230 23 of of IN 36297 230 24 studies study NNS 36297 230 25 of of IN 36297 230 26 the the DT 36297 230 27 psychology psychology NN 36297 230 28 of of IN 36297 230 29 vision vision NN 36297 230 30 have have VBP 36297 230 31 shown show VBN 36297 230 32 that that IN 36297 230 33 these these DT 36297 230 34 visual visual JJ 36297 230 35 judgments judgment NNS 36297 230 36 may may MD 36297 230 37 be be VB 36297 230 38 analyzed analyze VBN 36297 230 39 into into IN 36297 230 40 simpler simple JJR 36297 230 41 elements element NNS 36297 230 42 . . . 36297 231 1 Therefore therefore RB 36297 231 2 , , , 36297 231 3 they -PRON- PRP 36297 231 4 are be VBP 36297 231 5 liable liable JJ 36297 231 6 to to IN 36297 231 7 error error NN 36297 231 8 . . . 36297 232 1 That that IN 36297 232 2 the the DT 36297 232 3 ancients ancient NNS 36297 232 4 sensed sense VBD 36297 232 5 the the DT 36297 232 6 existence existence NN 36297 232 7 or or CC 36297 232 8 possibility possibility NN 36297 232 9 of of IN 36297 232 10 illusions illusion NNS 36297 232 11 is be VBZ 36297 232 12 evidenced evidence VBN 36297 232 13 by by IN 36297 232 14 the the DT 36297 232 15 fact fact NN 36297 232 16 that that IN 36297 232 17 they -PRON- PRP 36297 232 18 tried try VBD 36297 232 19 to to TO 36297 232 20 draw draw VB 36297 232 21 and and CC 36297 232 22 to to TO 36297 232 23 paint paint VB 36297 232 24 although although IN 36297 232 25 their -PRON- PRP$ 36297 232 26 inability inability NN 36297 232 27 to to TO 36297 232 28 observe observe VB 36297 232 29 carefully carefully RB 36297 232 30 is be VBZ 36297 232 31 indicated indicate VBN 36297 232 32 by by IN 36297 232 33 the the DT 36297 232 34 absence absence NN 36297 232 35 of of IN 36297 232 36 true true JJ 36297 232 37 shading shading NN 36297 232 38 . . . 36297 233 1 The the DT 36297 233 2 architecture architecture NN 36297 233 3 of of IN 36297 233 4 ancient ancient JJ 36297 233 5 Greece Greece NNP 36297 233 6 reveals reveal VBZ 36297 233 7 a a DT 36297 233 8 knowledge knowledge NN 36297 233 9 of of IN 36297 233 10 certain certain JJ 36297 233 11 illusions illusion NNS 36297 233 12 in in IN 36297 233 13 the the DT 36297 233 14 efforts effort NNS 36297 233 15 to to TO 36297 233 16 overcome overcome VB 36297 233 17 them -PRON- PRP 36297 233 18 . . . 36297 234 1 However however RB 36297 234 2 , , , 36297 234 3 the the DT 36297 234 4 study study NN 36297 234 5 of of IN 36297 234 6 illusions illusion NNS 36297 234 7 did do VBD 36297 234 8 not not RB 36297 234 9 engage engage VB 36297 234 10 the the DT 36297 234 11 attention attention NN 36297 234 12 of of IN 36297 234 13 scientists scientist NNS 36297 234 14 until until IN 36297 234 15 a a DT 36297 234 16 comparatively comparatively RB 36297 234 17 recent recent JJ 36297 234 18 period period NN 36297 234 19 . . . 36297 235 1 Notwithstanding notwithstanding IN 36297 235 2 this this DT 36297 235 3 belated belate VBN 36297 235 4 attention attention NN 36297 235 5 there there EX 36297 235 6 is be VBZ 36297 235 7 a a DT 36297 235 8 vast vast JJ 36297 235 9 scientific scientific JJ 36297 235 10 literature literature NN 36297 235 11 pertaining pertain VBG 36297 235 12 to to IN 36297 235 13 the the DT 36297 235 14 multitudinous multitudinous JJ 36297 235 15 phases phase NNS 36297 235 16 of of IN 36297 235 17 the the DT 36297 235 18 subject subject NN 36297 235 19 ; ; : 36297 235 20 however however RB 36297 235 21 , , , 36297 235 22 most most JJS 36297 235 23 of of IN 36297 235 24 it -PRON- PRP 36297 235 25 is be VBZ 36297 235 26 fragmentary fragmentary JJ 36297 235 27 and and CC 36297 235 28 much much JJ 36297 235 29 of of IN 36297 235 30 it -PRON- PRP 36297 235 31 is be VBZ 36297 235 32 controversial controversial JJ 36297 235 33 . . . 36297 236 1 Some some DT 36297 236 2 of of IN 36297 236 3 it -PRON- PRP 36297 236 4 deals deal VBZ 36297 236 5 with with IN 36297 236 6 theory theory NN 36297 236 7 for for IN 36297 236 8 a a DT 36297 236 9 particular particular JJ 36297 236 10 and and CC 36297 236 11 often often RB 36297 236 12 a a DT 36297 236 13 very very RB 36297 236 14 simple simple JJ 36297 236 15 case case NN 36297 236 16 . . . 36297 237 1 In in IN 36297 237 2 life life NN 36297 237 3 complex complex JJ 36297 237 4 illusions illusion NNS 36297 237 5 are be VBP 36297 237 6 met meet VBN 36297 237 7 but but CC 36297 237 8 at at IN 36297 237 9 present present NN 36297 237 10 it -PRON- PRP 36297 237 11 would would MD 36297 237 12 be be VB 36297 237 13 futile futile JJ 36297 237 14 to to TO 36297 237 15 attempt attempt VB 36297 237 16 to to TO 36297 237 17 explain explain VB 36297 237 18 them -PRON- PRP 36297 237 19 in in IN 36297 237 20 detail detail NN 36297 237 21 . . . 36297 238 1 Furthermore furthermore RB 36297 238 2 , , , 36297 238 3 there there EX 36297 238 4 have have VBP 36297 238 5 been be VBN 36297 238 6 few few JJ 36297 238 7 attempts attempt NNS 36297 238 8 to to TO 36297 238 9 generalize generalize VB 36297 238 10 and and CC 36297 238 11 to to IN 36297 238 12 group group NN 36297 238 13 examples example NNS 36297 238 14 of of IN 36297 238 15 typical typical JJ 36297 238 16 phenomena phenomenon NNS 36297 238 17 in in IN 36297 238 18 such such PDT 36297 238 19 a a DT 36297 238 20 manner manner NN 36297 238 21 as as IN 36297 238 22 to to TO 36297 238 23 enable enable VB 36297 238 24 a a DT 36297 238 25 general general JJ 36297 238 26 reader reader NN 36297 238 27 to to TO 36297 238 28 see see VB 36297 238 29 the the DT 36297 238 30 complex complex JJ 36297 238 31 fabric fabric NN 36297 238 32 as as IN 36297 238 33 a a DT 36297 238 34 whole whole NN 36297 238 35 . . . 36297 239 1 Finally finally RB 36297 239 2 , , , 36297 239 3 the the DT 36297 239 4 occurrence occurrence NN 36297 239 5 and and CC 36297 239 6 application application NN 36297 239 7 of of IN 36297 239 8 illusions illusion NNS 36297 239 9 in in IN 36297 239 10 various various JJ 36297 239 11 arts art NNS 36297 239 12 and and CC 36297 239 13 the the DT 36297 239 14 prominence prominence NN 36297 239 15 of of IN 36297 239 16 illusions illusion NNS 36297 239 17 on on IN 36297 239 18 every every DT 36297 239 19 hand hand NN 36297 239 20 have have VBP 36297 239 21 not not RB 36297 239 22 been be VBN 36297 239 23 especially especially RB 36297 239 24 treated treat VBN 36297 239 25 . . . 36297 240 1 It -PRON- PRP 36297 240 2 is be VBZ 36297 240 3 the the DT 36297 240 4 hope hope NN 36297 240 5 that that IN 36297 240 6 this this DT 36297 240 7 will will MD 36297 240 8 be be VB 36297 240 9 realized realize VBN 36297 240 10 in in IN 36297 240 11 the the DT 36297 240 12 following following JJ 36297 240 13 chapters chapter NNS 36297 240 14 in in RB 36297 240 15 so so RB 36297 240 16 far far RB 36297 240 17 as as IN 36297 240 18 brevity brevity NN 36297 240 19 of of IN 36297 240 20 treatment treatment NN 36297 240 21 makes make VBZ 36297 240 22 this this DT 36297 240 23 possible possible JJ 36297 240 24 . . . 36297 241 1 Doubtless doubtless JJ 36297 241 2 thoughtful thoughtful JJ 36297 241 3 observers observer NNS 36297 241 4 ages age NNS 36297 241 5 ago ago RB 36297 241 6 noticed notice VBD 36297 241 7 visual visual JJ 36297 241 8 illusions illusion NNS 36297 241 9 , , , 36297 241 10 especially especially RB 36297 241 11 those those DT 36297 241 12 found find VBN 36297 241 13 in in IN 36297 241 14 nature nature NN 36297 241 15 and and CC 36297 241 16 in in IN 36297 241 17 architecture architecture NN 36297 241 18 . . . 36297 242 1 When when WRB 36297 242 2 it -PRON- PRP 36297 242 3 is be VBZ 36297 242 4 considered consider VBN 36297 242 5 that that IN 36297 242 6 geometrical geometrical JJ 36297 242 7 figures figure NNS 36297 242 8 are be VBP 36297 242 9 very very RB 36297 242 10 commonly commonly RB 36297 242 11 of of IN 36297 242 12 an an DT 36297 242 13 illusory illusory JJ 36297 242 14 character character NN 36297 242 15 it -PRON- PRP 36297 242 16 appears appear VBZ 36297 242 17 improbable improbable JJ 36297 242 18 that that IN 36297 242 19 optical optical JJ 36297 242 20 illusions illusion NNS 36297 242 21 could could MD 36297 242 22 have have VB 36297 242 23 escaped escape VBN 36297 242 24 the the DT 36297 242 25 keenness keenness NN 36297 242 26 of of IN 36297 242 27 Euclid Euclid NNP 36297 242 28 . . . 36297 243 1 The the DT 36297 243 2 apparent apparent JJ 36297 243 3 enlargement enlargement NN 36297 243 4 of of IN 36297 243 5 the the DT 36297 243 6 moon moon NN 36297 243 7 near near IN 36297 243 8 the the DT 36297 243 9 horizon horizon NN 36297 243 10 and and CC 36297 243 11 the the DT 36297 243 12 apparent apparent JJ 36297 243 13 flattened flatten VBD 36297 243 14 vault vault NN 36297 243 15 of of IN 36297 243 16 the the DT 36297 243 17 sky sky NN 36297 243 18 were be VBD 36297 243 19 noticed notice VBN 36297 243 20 at at IN 36297 243 21 least least JJS 36297 243 22 a a DT 36297 243 23 thousand thousand CD 36297 243 24 years year NNS 36297 243 25 ago ago RB 36297 243 26 and and CC 36297 243 27 literature literature VBP 36297 243 28 yields yield NNS 36297 243 29 several several JJ 36297 243 30 hundred hundred CD 36297 243 31 memoirs memoir NNS 36297 243 32 on on IN 36297 243 33 these these DT 36297 243 34 subjects subject NNS 36297 243 35 . . . 36297 244 1 One one CD 36297 244 2 of of IN 36297 244 3 the the DT 36297 244 4 oldest old JJS 36297 244 5 dissertations dissertation NNS 36297 244 6 upon upon IN 36297 244 7 the the DT 36297 244 8 apparent apparent JJ 36297 244 9 form form NN 36297 244 10 of of IN 36297 244 11 the the DT 36297 244 12 sky sky NN 36297 244 13 was be VBD 36297 244 14 published publish VBN 36297 244 15 by by IN 36297 244 16 Alhazen Alhazen NNP 36297 244 17 , , , 36297 244 18 an an DT 36297 244 19 Arab arab JJ 36297 244 20 astronomer astronomer NN 36297 244 21 of of IN 36297 244 22 the the DT 36297 244 23 tenth tenth JJ 36297 244 24 century century NN 36297 244 25 . . . 36297 245 1 Kepler Kepler NNP 36297 245 2 in in IN 36297 245 3 1618 1618 CD 36297 245 4 wrote write VBD 36297 245 5 upon upon IN 36297 245 6 the the DT 36297 245 7 subject subject NN 36297 245 8 . . . 36297 246 1 Philosophers philosopher NNS 36297 246 2 of of IN 36297 246 3 the the DT 36297 246 4 past past JJ 36297 246 5 centuries century NNS 36297 246 6 prepared prepare VBD 36297 246 7 the the DT 36297 246 8 way way NN 36297 246 9 toward toward IN 36297 246 10 an an DT 36297 246 11 understanding understanding NN 36297 246 12 of of IN 36297 246 13 many many JJ 36297 246 14 complexities complexity NNS 36297 246 15 of of IN 36297 246 16 today today NN 36297 246 17 . . . 36297 247 1 They -PRON- PRP 36297 247 2 molded mold VBD 36297 247 3 thought think VBD 36297 247 4 into into IN 36297 247 5 correct correct JJ 36297 247 6 form form NN 36297 247 7 and and CC 36297 247 8 established establish VBD 36297 247 9 fundamental fundamental JJ 36297 247 10 concepts concept NNS 36297 247 11 and and CC 36297 247 12 principles principle NNS 36297 247 13 . . . 36297 248 1 Their -PRON- PRP$ 36297 248 2 chief chief JJ 36297 248 3 tool tool NN 36297 248 4 was be VBD 36297 248 5 philosophy philosophy NN 36297 248 6 , , , 36297 248 7 the the DT 36297 248 8 experimental experimental JJ 36297 248 9 attack attack NN 36297 248 10 being be VBG 36297 248 11 left leave VBN 36297 248 12 to to IN 36297 248 13 the the DT 36297 248 14 scientists scientist NNS 36297 248 15 of of IN 36297 248 16 the the DT 36297 248 17 modern modern JJ 36297 248 18 age age NN 36297 248 19 . . . 36297 249 1 However however RB 36297 249 2 , , , 36297 249 3 they -PRON- PRP 36297 249 4 established establish VBD 36297 249 5 philosophically philosophically RB 36297 249 6 such such JJ 36297 249 7 principles principle NNS 36297 249 8 as as IN 36297 249 9 " " `` 36297 249 10 space space NN 36297 249 11 and and CC 36297 249 12 time time NN 36297 249 13 are be VBP 36297 249 14 not not RB 36297 249 15 realities reality NNS 36297 249 16 of of IN 36297 249 17 the the DT 36297 249 18 phenomenal phenomenal JJ 36297 249 19 world world NN 36297 249 20 but but CC 36297 249 21 the the DT 36297 249 22 modes mode NNS 36297 249 23 under under IN 36297 249 24 which which WDT 36297 249 25 we -PRON- PRP 36297 249 26 see see VBP 36297 249 27 things thing NNS 36297 249 28 apart apart RB 36297 249 29 . . . 36297 249 30 " " '' 36297 250 1 As as IN 36297 250 2 science science NN 36297 250 3 became become VBD 36297 250 4 organized organized JJ 36297 250 5 during during IN 36297 250 6 the the DT 36297 250 7 present present JJ 36297 250 8 experimental experimental JJ 36297 250 9 era era NN 36297 250 10 , , , 36297 250 11 measurements measurement NNS 36297 250 12 were be VBD 36297 250 13 applied apply VBN 36297 250 14 and and CC 36297 250 15 there there EX 36297 250 16 began begin VBD 36297 250 17 to to TO 36297 250 18 appear appear VB 36297 250 19 analytical analytical JJ 36297 250 20 discussions discussion NNS 36297 250 21 of of IN 36297 250 22 various various JJ 36297 250 23 subjects subject NNS 36297 250 24 including include VBG 36297 250 25 optical optical JJ 36297 250 26 illusions illusion NNS 36297 250 27 . . . 36297 251 1 One one CD 36297 251 2 of of IN 36297 251 3 the the DT 36297 251 4 earliest early JJS 36297 251 5 investigations investigation NNS 36297 251 6 of of IN 36297 251 7 the the DT 36297 251 8 modern modern JJ 36297 251 9 type type NN 36297 251 10 was be VBD 36297 251 11 made make VBN 36297 251 12 by by IN 36297 251 13 Oppel Oppel NNP 36297 251 14 , , , 36297 251 15 an an DT 36297 251 16 account account NN 36297 251 17 of of IN 36297 251 18 which which WDT 36297 251 19 appeared appear VBD 36297 251 20 in in IN 36297 251 21 1854 1854 CD 36297 251 22 . . . 36297 252 1 Since since IN 36297 252 2 that that DT 36297 252 3 time time NN 36297 252 4 scientific scientific JJ 36297 252 5 literature literature NN 36297 252 6 has have VBZ 36297 252 7 received receive VBN 36297 252 8 thousands thousand NNS 36297 252 9 of of IN 36297 252 10 worthy worthy JJ 36297 252 11 contributions contribution NNS 36297 252 12 dealing deal VBG 36297 252 13 with with IN 36297 252 14 visual visual JJ 36297 252 15 illusions illusion NNS 36297 252 16 . . . 36297 253 1 There there EX 36297 253 2 are be VBP 36297 253 3 many many JJ 36297 253 4 facts fact NNS 36297 253 5 affecting affect VBG 36297 253 6 vision vision NN 36297 253 7 regarding regarding NN 36297 253 8 which which WDT 36297 253 9 no no DT 36297 253 10 theory theory NN 36297 253 11 is be VBZ 36297 253 12 necessary necessary JJ 36297 253 13 . . . 36297 254 1 They -PRON- PRP 36297 254 2 speak speak VBP 36297 254 3 for for IN 36297 254 4 themselves -PRON- PRP 36297 254 5 . . . 36297 255 1 There there EX 36297 255 2 are be VBP 36297 255 3 many many JJ 36297 255 4 equally equally RB 36297 255 5 obvious obvious JJ 36297 255 6 facts fact NNS 36297 255 7 which which WDT 36297 255 8 are be VBP 36297 255 9 not not RB 36297 255 10 satisfactorily satisfactorily RB 36297 255 11 explained explain VBN 36297 255 12 but but CC 36297 255 13 the the DT 36297 255 14 lack lack NN 36297 255 15 of of IN 36297 255 16 explanation explanation NN 36297 255 17 does do VBZ 36297 255 18 not not RB 36297 255 19 prevent prevent VB 36297 255 20 their -PRON- PRP$ 36297 255 21 recognition recognition NN 36297 255 22 . . . 36297 256 1 In in IN 36297 256 2 fact fact NN 36297 256 3 , , , 36297 256 4 only only RB 36297 256 5 the the DT 36297 256 6 scientist scientist NN 36297 256 7 needs need VBZ 36297 256 8 to to TO 36297 256 9 worry worry VB 36297 256 10 over over IN 36297 256 11 systematic systematic JJ 36297 256 12 explanations explanation NNS 36297 256 13 and and CC 36297 256 14 theoretical theoretical JJ 36297 256 15 generalizations generalization NNS 36297 256 16 . . . 36297 257 1 He -PRON- PRP 36297 257 2 needs need VBZ 36297 257 3 these these DT 36297 257 4 in in IN 36297 257 5 order order NN 36297 257 6 to to TO 36297 257 7 invade invade VB 36297 257 8 and and CC 36297 257 9 to to TO 36297 257 10 explore explore VB 36297 257 11 the the DT 36297 257 12 other other JJ 36297 257 13 unknowns unknown NNS 36297 257 14 where where WRB 36297 257 15 he -PRON- PRP 36297 257 16 will will MD 36297 257 17 add add VB 36297 257 18 to to IN 36297 257 19 his -PRON- PRP$ 36297 257 20 storehouse storehouse NN 36297 257 21 of of IN 36297 257 22 knowledge knowledge NN 36297 257 23 . . . 36297 258 1 A a DT 36297 258 2 long long JJ 36297 258 3 step step NN 36297 258 4 toward toward IN 36297 258 5 understanding understanding NN 36297 258 6 is be VBZ 36297 258 7 made make VBN 36297 258 8 by by IN 36297 258 9 becoming become VBG 36297 258 10 acquainted acquaint VBN 36297 258 11 with with IN 36297 258 12 certain certain JJ 36297 258 13 physical physical JJ 36297 258 14 , , , 36297 258 15 physiological physiological JJ 36297 258 16 , , , 36297 258 17 and and CC 36297 258 18 psychological psychological JJ 36297 258 19 facts fact NNS 36297 258 20 of of IN 36297 258 21 light light NN 36297 258 22 , , , 36297 258 23 color color NN 36297 258 24 , , , 36297 258 25 and and CC 36297 258 26 lighting lighting NN 36297 258 27 . . . 36297 259 1 Furthermore furthermore RB 36297 259 2 , , , 36297 259 3 acquaintance acquaintance NN 36297 259 4 with with IN 36297 259 5 the the DT 36297 259 6 visual visual JJ 36297 259 7 process process NN 36297 259 8 and and CC 36297 259 9 with with IN 36297 259 10 the the DT 36297 259 11 structure structure NN 36297 259 12 of of IN 36297 259 13 the the DT 36297 259 14 eye eye NN 36297 259 15 aids aid VBZ 36297 259 16 materially materially RB 36297 259 17 . . . 36297 260 1 For for IN 36297 260 2 this this DT 36297 260 3 reason reason NN 36297 260 4 the the DT 36297 260 5 next next JJ 36297 260 6 two two CD 36297 260 7 chapters chapter NNS 36297 260 8 have have VBP 36297 260 9 been be VBN 36297 260 10 added add VBN 36297 260 11 even even RB 36297 260 12 at at IN 36297 260 13 the the DT 36297 260 14 risk risk NN 36297 260 15 of of IN 36297 260 16 discouraging discourage VBG 36297 260 17 some some DT 36297 260 18 readers reader NNS 36297 260 19 . . . 36297 261 1 In in IN 36297 261 2 a a DT 36297 261 3 broad broad JJ 36297 261 4 sense sense NN 36297 261 5 , , , 36297 261 6 any any DT 36297 261 7 visual visual JJ 36297 261 8 perception perception NN 36297 261 9 which which WDT 36297 261 10 does do VBZ 36297 261 11 not not RB 36297 261 12 harmonize harmonize VB 36297 261 13 with with IN 36297 261 14 physical physical JJ 36297 261 15 measurements measurement NNS 36297 261 16 may may MD 36297 261 17 be be VB 36297 261 18 termed term VBN 36297 261 19 an an DT 36297 261 20 " " `` 36297 261 21 illusion illusion NN 36297 261 22 . . . 36297 261 23 " " '' 36297 262 1 Therefore therefore RB 36297 262 2 , , , 36297 262 3 the the DT 36297 262 4 term term NN 36297 262 5 could could MD 36297 262 6 include include VB 36297 262 7 those those DT 36297 262 8 physical physical JJ 36297 262 9 illusions illusion NNS 36297 262 10 obtained obtain VBN 36297 262 11 by by IN 36297 262 12 means mean NNS 36297 262 13 of of IN 36297 262 14 prisms prism NNS 36297 262 15 , , , 36297 262 16 lenses lense NNS 36297 262 17 , , , 36297 262 18 and and CC 36297 262 19 mirrors mirror NNS 36297 262 20 and and CC 36297 262 21 such such JJ 36297 262 22 illusions illusion NNS 36297 262 23 as as IN 36297 262 24 the the DT 36297 262 25 mirage mirage NN 36297 262 26 . . . 36297 263 1 It -PRON- PRP 36297 263 2 could could MD 36297 263 3 also also RB 36297 263 4 include include VB 36297 263 5 the the DT 36297 263 6 physiological physiological JJ 36297 263 7 illusions illusion NNS 36297 263 8 of of IN 36297 263 9 light light NN 36297 263 10 and and CC 36297 263 11 color color NN 36297 263 12 such such JJ 36297 263 13 as as IN 36297 263 14 after after IN 36297 263 15 - - HYPH 36297 263 16 images image NNS 36297 263 17 , , , 36297 263 18 irradiation irradiation NN 36297 263 19 , , , 36297 263 20 and and CC 36297 263 21 contrast contrast NN 36297 263 22 , , , 36297 263 23 and and CC 36297 263 24 the the DT 36297 263 25 psycho psycho NN 36297 263 26 - - HYPH 36297 263 27 physiological physiological JJ 36297 263 28 illusions illusion NNS 36297 263 29 of of IN 36297 263 30 space space NN 36297 263 31 and and CC 36297 263 32 the the DT 36297 263 33 character character NN 36297 263 34 of of IN 36297 263 35 objects object NNS 36297 263 36 . . . 36297 264 1 In in IN 36297 264 2 fact fact NN 36297 264 3 , , , 36297 264 4 the the DT 36297 264 5 scope scope NN 36297 264 6 of of IN 36297 264 7 the the DT 36297 264 8 following following JJ 36297 264 9 chapters chapter NNS 36297 264 10 is be VBZ 36297 264 11 arbitrarily arbitrarily RB 36297 264 12 extended extended JJ 36297 264 13 to to TO 36297 264 14 include include VB 36297 264 15 all all PDT 36297 264 16 these these DT 36297 264 17 aspects aspect NNS 36297 264 18 , , , 36297 264 19 but but CC 36297 264 20 confines confine NNS 36297 264 21 consideration consideration NN 36297 264 22 only only RB 36297 264 23 to to IN 36297 264 24 " " `` 36297 264 25 static static JJ 36297 264 26 " " '' 36297 264 27 illusions illusion NNS 36297 264 28 . . . 36297 265 1 In in IN 36297 265 2 a a DT 36297 265 3 more more RBR 36297 265 4 common common JJ 36297 265 5 sense sense NN 36297 265 6 attention attention NN 36297 265 7 is be VBZ 36297 265 8 usually usually RB 36297 265 9 restricted restrict VBN 36297 265 10 to to IN 36297 265 11 the the DT 36297 265 12 last last JJ 36297 265 13 group group NN 36297 265 14 ; ; : 36297 265 15 that that RB 36297 265 16 is is RB 36297 265 17 , , , 36297 265 18 to to IN 36297 265 19 the the DT 36297 265 20 psycho psycho NN 36297 265 21 - - HYPH 36297 265 22 physiological physiological JJ 36297 265 23 illusions illusion NNS 36297 265 24 attending attend VBG 36297 265 25 the the DT 36297 265 26 perception perception NN 36297 265 27 of of IN 36297 265 28 space space NN 36297 265 29 and and CC 36297 265 30 the the DT 36297 265 31 character character NN 36297 265 32 of of IN 36297 265 33 objects object NNS 36297 265 34 although although IN 36297 265 35 motion motion NN 36297 265 36 is be VBZ 36297 265 37 often often RB 36297 265 38 included include VBN 36297 265 39 . . . 36297 266 1 It -PRON- PRP 36297 266 2 should should MD 36297 266 3 be be VB 36297 266 4 obvious obvious JJ 36297 266 5 that that IN 36297 266 6 no no DT 36297 266 7 simple simple JJ 36297 266 8 or or CC 36297 266 9 even even RB 36297 266 10 single single JJ 36297 266 11 theory theory NN 36297 266 12 can can MD 36297 266 13 cover cover VB 36297 266 14 the the DT 36297 266 15 vast vast JJ 36297 266 16 range range NN 36297 266 17 of of IN 36297 266 18 illusions illusion NNS 36297 266 19 considered consider VBN 36297 266 20 in in IN 36297 266 21 the the DT 36297 266 22 broad broad JJ 36297 266 23 sense sense NN 36297 266 24 because because IN 36297 266 25 there there EX 36297 266 26 are be VBP 36297 266 27 so so RB 36297 266 28 many many JJ 36297 266 29 different different JJ 36297 266 30 kinds kind NNS 36297 266 31 of of IN 36297 266 32 factors factor NNS 36297 266 33 involved involve VBN 36297 266 34 . . . 36297 267 1 For for IN 36297 267 2 this this DT 36297 267 3 reason reason NN 36297 267 4 explanations explanation NNS 36297 267 5 will will MD 36297 267 6 be be VB 36297 267 7 presented present VBN 36297 267 8 wherever wherever WRB 36297 267 9 feasible feasible JJ 36297 267 10 in in IN 36297 267 11 connection connection NN 36297 267 12 with with IN 36297 267 13 specific specific JJ 36297 267 14 illusions illusion NNS 36297 267 15 . . . 36297 268 1 However however RB 36297 268 2 , , , 36297 268 3 in in IN 36297 268 4 closing close VBG 36297 268 5 this this DT 36297 268 6 chapter chapter NN 36297 268 7 it -PRON- PRP 36297 268 8 appears appear VBZ 36297 268 9 of of IN 36297 268 10 interest interest NN 36297 268 11 to to TO 36297 268 12 touch touch VB 36297 268 13 upon upon IN 36297 268 14 the the DT 36297 268 15 more more JJR 36297 268 16 generally generally RB 36297 268 17 exploited exploit VBN 36297 268 18 theories theory NNS 36297 268 19 of of IN 36297 268 20 illusions illusion NNS 36297 268 21 of of IN 36297 268 22 the the DT 36297 268 23 type type NN 36297 268 24 considered consider VBN 36297 268 25 in in IN 36297 268 26 the the DT 36297 268 27 foregoing foregoing NN 36297 268 28 restricted restricted JJ 36297 268 29 sense sense NN 36297 268 30 . . . 36297 269 1 Hypotheses hypothesis NNS 36297 269 2 pertaining pertain VBG 36297 269 3 to to IN 36297 269 4 illusions illusion NNS 36297 269 5 are be VBP 36297 269 6 generally generally RB 36297 269 7 lacking lack VBG 36297 269 8 in in IN 36297 269 9 agreement agreement NN 36297 269 10 , , , 36297 269 11 but but CC 36297 269 12 for for IN 36297 269 13 the the DT 36297 269 14 special special JJ 36297 269 15 case case NN 36297 269 16 of of IN 36297 269 17 what what WP 36297 269 18 might may MD 36297 269 19 be be VB 36297 269 20 more more RBR 36297 269 21 safely safely RB 36297 269 22 termed term VBN 36297 269 23 " " `` 36297 269 24 geometrical geometrical JJ 36297 269 25 - - HYPH 36297 269 26 optical optical JJ 36297 269 27 illusions illusion NNS 36297 269 28 " " `` 36297 269 29 two two CD 36297 269 30 different different JJ 36297 269 31 theories theory NNS 36297 269 32 , , , 36297 269 33 by by IN 36297 269 34 Lipps Lipps NNP 36297 269 35 and and CC 36297 269 36 by by IN 36297 269 37 Wundt Wundt NNP 36297 269 38 respectively respectively RB 36297 269 39 , , , 36297 269 40 are be VBP 36297 269 41 conspicuous conspicuous JJ 36297 269 42 . . . 36297 270 1 In in IN 36297 270 2 fact fact NN 36297 270 3 , , , 36297 270 4 most most JJS 36297 270 5 theories theory NNS 36297 270 6 are be VBP 36297 270 7 variants variant NNS 36297 270 8 of of IN 36297 270 9 these these DT 36297 270 10 two two CD 36297 270 11 systematic systematic JJ 36297 270 12 " " `` 36297 270 13 explanations explanation NNS 36297 270 14 " " '' 36297 270 15 of of IN 36297 270 16 illusions illusion NNS 36297 270 17 ( ( -LRB- 36297 270 18 in in IN 36297 270 19 the the DT 36297 270 20 restricted restricted JJ 36297 270 21 sense sense NN 36297 270 22 ) ) -RRB- 36297 270 23 . . . 36297 271 1 Lipps Lipps NNP 36297 271 2 proposed propose VBD 36297 271 3 the the DT 36297 271 4 principle principle NN 36297 271 5 of of IN 36297 271 6 mechanical mechanical JJ 36297 271 7 - - HYPH 36297 271 8 esthetic esthetic NN 36297 271 9 unity unity NN 36297 271 10 , , , 36297 271 11 according accord VBG 36297 271 12 to to IN 36297 271 13 which which WDT 36297 271 14 we -PRON- PRP 36297 271 15 unconsciously unconsciously RB 36297 271 16 give give VBP 36297 271 17 to to IN 36297 271 18 every every DT 36297 271 19 space space NN 36297 271 20 - - HYPH 36297 271 21 form form NN 36297 271 22 a a DT 36297 271 23 living living NN 36297 271 24 personality personality NN 36297 271 25 and and CC 36297 271 26 unconsciously unconsciously RB 36297 271 27 consider consider VB 36297 271 28 certain certain JJ 36297 271 29 mechanical mechanical JJ 36297 271 30 forces force NNS 36297 271 31 acting act VBG 36297 271 32 . . . 36297 272 1 Our -PRON- PRP$ 36297 272 2 judgments judgment NNS 36297 272 3 are be VBP 36297 272 4 therefore therefore RB 36297 272 5 modified modify VBN 36297 272 6 by by IN 36297 272 7 this this DT 36297 272 8 anthropomorphic anthropomorphic JJ 36297 272 9 attitude attitude NN 36297 272 10 . . . 36297 273 1 For for IN 36297 273 2 example example NN 36297 273 3 , , , 36297 273 4 we -PRON- PRP 36297 273 5 regard regard VBP 36297 273 6 the the DT 36297 273 7 circle circle NN 36297 273 8 as as IN 36297 273 9 being be VBG 36297 273 10 the the DT 36297 273 11 result result NN 36297 273 12 of of IN 36297 273 13 the the DT 36297 273 14 action action NN 36297 273 15 of of IN 36297 273 16 tangential tangential JJ 36297 273 17 and and CC 36297 273 18 radial radial JJ 36297 273 19 forces force NNS 36297 273 20 in in IN 36297 273 21 which which WDT 36297 273 22 the the DT 36297 273 23 latter latter JJ 36297 273 24 appear appear VBP 36297 273 25 to to IN 36297 273 26 triumph triumph NN 36297 273 27 . . . 36297 274 1 According accord VBG 36297 274 2 to to IN 36297 274 3 Lipps Lipps NNP 36297 274 4 ' ' POS 36297 274 5 theory theory NN 36297 274 6 the the DT 36297 274 7 circle circle NN 36297 274 8 has have VBZ 36297 274 9 a a DT 36297 274 10 centripetal centripetal JJ 36297 274 11 character character NN 36297 274 12 and and CC 36297 274 13 these these DT 36297 274 14 radial radial JJ 36297 274 15 forces force NNS 36297 274 16 toward toward IN 36297 274 17 the the DT 36297 274 18 center center NN 36297 274 19 , , , 36297 274 20 which which WDT 36297 274 21 apparently apparently RB 36297 274 22 have have VBP 36297 274 23 overcome overcome VBN 36297 274 24 the the DT 36297 274 25 tangential tangential JJ 36297 274 26 forces force NNS 36297 274 27 during during IN 36297 274 28 the the DT 36297 274 29 process process NN 36297 274 30 of of IN 36297 274 31 creating create VBG 36297 274 32 the the DT 36297 274 33 circle circle NN 36297 274 34 , , , 36297 274 35 lead lead VB 36297 274 36 to to IN 36297 274 37 underestimation underestimation NN 36297 274 38 of of IN 36297 274 39 its -PRON- PRP$ 36297 274 40 size size NN 36297 274 41 as as IN 36297 274 42 compared compare VBN 36297 274 43 with with IN 36297 274 44 a a DT 36297 274 45 square square NN 36297 274 46 of of IN 36297 274 47 the the DT 36297 274 48 same same JJ 36297 274 49 height height NN 36297 274 50 and and CC 36297 274 51 breadth breadth NN 36297 274 52 . . . 36297 275 1 By by IN 36297 275 2 drawing draw VBG 36297 275 3 a a DT 36297 275 4 circle circle NN 36297 275 5 and and CC 36297 275 6 square square JJ 36297 275 7 side side NN 36297 275 8 by by IN 36297 275 9 side side NN 36297 275 10 , , , 36297 275 11 with with IN 36297 275 12 the the DT 36297 275 13 diameter diameter NN 36297 275 14 of of IN 36297 275 15 the the DT 36297 275 16 former former JJ 36297 275 17 equal equal JJ 36297 275 18 to to IN 36297 275 19 the the DT 36297 275 20 length length NN 36297 275 21 of of IN 36297 275 22 a a DT 36297 275 23 side side NN 36297 275 24 of of IN 36297 275 25 the the DT 36297 275 26 latter latter JJ 36297 275 27 , , , 36297 275 28 this this DT 36297 275 29 illusion illusion NN 36297 275 30 is be VBZ 36297 275 31 readily readily RB 36297 275 32 demonstrated demonstrate VBN 36297 275 33 . . . 36297 276 1 Of of RB 36297 276 2 course course RB 36297 276 3 , , , 36297 276 4 the the DT 36297 276 5 square square NN 36297 276 6 has have VBZ 36297 276 7 a a DT 36297 276 8 greater great JJR 36297 276 9 area area NN 36297 276 10 than than IN 36297 276 11 the the DT 36297 276 12 circle circle NN 36297 276 13 and and CC 36297 276 14 it -PRON- PRP 36297 276 15 is be VBZ 36297 276 16 difficult difficult JJ 36297 276 17 to to TO 36297 276 18 determine determine VB 36297 276 19 the the DT 36297 276 20 effect effect NN 36297 276 21 of of IN 36297 276 22 this this DT 36297 276 23 disparity disparity NN 36297 276 24 in in IN 36297 276 25 area area NN 36297 276 26 . . . 36297 277 1 Figure figure NN 36297 277 2 60 60 CD 36297 277 3 where where WRB 36297 277 4 the the DT 36297 277 5 areas area NNS 36297 277 6 of of IN 36297 277 7 the the DT 36297 277 8 circle circle NN 36297 277 9 and and CC 36297 277 10 square square NN 36297 277 11 are be VBP 36297 277 12 equal equal JJ 36297 277 13 and and CC 36297 277 14 consequently consequently RB 36297 277 15 the the DT 36297 277 16 height height NN 36297 277 17 of of IN 36297 277 18 the the DT 36297 277 19 former former JJ 36297 277 20 is be VBZ 36297 277 21 considerably considerably RB 36297 277 22 greater great JJR 36297 277 23 than than IN 36297 277 24 the the DT 36297 277 25 latter latter JJ 36297 277 26 , , , 36297 277 27 is be VBZ 36297 277 28 of of IN 36297 277 29 interest interest NN 36297 277 30 in in IN 36297 277 31 this this DT 36297 277 32 connection connection NN 36297 277 33 . . . 36297 278 1 By by IN 36297 278 2 experimenting experiment VBG 36297 278 3 with with IN 36297 278 4 a a DT 36297 278 5 series series NN 36297 278 6 of of IN 36297 278 7 pairs pair NNS 36297 278 8 consisting consist VBG 36297 278 9 of of IN 36297 278 10 a a DT 36297 278 11 circle circle NN 36297 278 12 and and CC 36297 278 13 a a DT 36297 278 14 square square NN 36297 278 15 , , , 36297 278 16 varying vary VBG 36297 278 17 in in RP 36297 278 18 dimensions dimension NNS 36297 278 19 from from IN 36297 278 20 equal equal JJ 36297 278 21 heights height NNS 36297 278 22 to to TO 36297 278 23 equal equal JJ 36297 278 24 areas area NNS 36297 278 25 , , , 36297 278 26 an an DT 36297 278 27 idea idea NN 36297 278 28 of of IN 36297 278 29 the the DT 36297 278 30 " " `` 36297 278 31 shrinking shrink VBG 36297 278 32 " " '' 36297 278 33 character character NN 36297 278 34 of of IN 36297 278 35 the the DT 36297 278 36 circle circle NN 36297 278 37 becomes become VBZ 36297 278 38 quite quite RB 36297 278 39 apparent apparent JJ 36297 278 40 . . . 36297 279 1 Wundt Wundt NNP 36297 279 2 does do VBZ 36297 279 3 not not RB 36297 279 4 attribute attribute VB 36297 279 5 the the DT 36297 279 6 illusion illusion NN 36297 279 7 to to IN 36297 279 8 a a DT 36297 279 9 deception deception NN 36297 279 10 or or CC 36297 279 11 error error NN 36297 279 12 of of IN 36297 279 13 judgment judgment NN 36297 279 14 but but CC 36297 279 15 to to IN 36297 279 16 direct direct JJ 36297 279 17 perception perception NN 36297 279 18 . . . 36297 280 1 According accord VBG 36297 280 2 to to IN 36297 280 3 his -PRON- PRP$ 36297 280 4 explanation explanation NN 36297 280 5 , , , 36297 280 6 the the DT 36297 280 7 laws law NNS 36297 280 8 of of IN 36297 280 9 retinal retinal JJ 36297 280 10 image image NN 36297 280 11 ( ( -LRB- 36297 280 12 fixation fixation NN 36297 280 13 ) ) -RRB- 36297 280 14 and and CC 36297 280 15 eye eye NN 36297 280 16 - - HYPH 36297 280 17 movement movement NN 36297 280 18 are be VBP 36297 280 19 responsible responsible JJ 36297 280 20 . . . 36297 281 1 For for IN 36297 281 2 example example NN 36297 281 3 , , , 36297 281 4 vertical vertical JJ 36297 281 5 distances distance NNS 36297 281 6 appear appear VBP 36297 281 7 greater great JJR 36297 281 8 than than IN 36297 281 9 horizontal horizontal JJ 36297 281 10 ones one NNS 36297 281 11 because because IN 36297 281 12 the the DT 36297 281 13 effort effort NN 36297 281 14 or or CC 36297 281 15 expenditure expenditure NN 36297 281 16 of of IN 36297 281 17 energy energy NN 36297 281 18 is be VBZ 36297 281 19 greater great JJR 36297 281 20 in in IN 36297 281 21 raising raise VBG 36297 281 22 the the DT 36297 281 23 eyes eye NNS 36297 281 24 than than IN 36297 281 25 in in IN 36297 281 26 turning turn VBG 36297 281 27 them -PRON- PRP 36297 281 28 through through IN 36297 281 29 an an DT 36297 281 30 equal equal JJ 36297 281 31 angle angle NN 36297 281 32 in in IN 36297 281 33 a a DT 36297 281 34 horizontal horizontal JJ 36297 281 35 plane plane NN 36297 281 36 . . . 36297 282 1 Unconscious unconscious JJ 36297 282 2 or or CC 36297 282 3 involuntary involuntary JJ 36297 282 4 eye eye NN 36297 282 5 - - HYPH 36297 282 6 movements movement NNS 36297 282 7 also also RB 36297 282 8 appear appear VBP 36297 282 9 to to TO 36297 282 10 play play VB 36297 282 11 a a DT 36297 282 12 part part NN 36297 282 13 in in IN 36297 282 14 many many JJ 36297 282 15 linear linear NN 36297 282 16 or or CC 36297 282 17 more more RBR 36297 282 18 accurately accurately RB 36297 282 19 , , , 36297 282 20 angular angular JJ 36297 282 21 illusions illusion NNS 36297 282 22 , , , 36297 282 23 but but CC 36297 282 24 certainly certainly RB 36297 282 25 Wundt Wundt NNP 36297 282 26 's 's POS 36297 282 27 explanation explanation NN 36297 282 28 does do VBZ 36297 282 29 not not RB 36297 282 30 suffice suffice VB 36297 282 31 for for IN 36297 282 32 all all DT 36297 282 33 illusions illusion NNS 36297 282 34 although although IN 36297 282 35 it -PRON- PRP 36297 282 36 may may MD 36297 282 37 explain explain VB 36297 282 38 many many JJ 36297 282 39 geometrical geometrical JJ 36297 282 40 illusions illusion NNS 36297 282 41 . . . 36297 283 1 It -PRON- PRP 36297 283 2 may may MD 36297 283 3 be be VB 36297 283 4 said say VBN 36297 283 5 to to TO 36297 283 6 be be VB 36297 283 7 of of IN 36297 283 8 the the DT 36297 283 9 " " `` 36297 283 10 perceptive perceptive JJ 36297 283 11 " " '' 36297 283 12 class class NN 36297 283 13 and and CC 36297 283 14 Lipps Lipps NNP 36297 283 15 ' ' POS 36297 283 16 theory theory NN 36297 283 17 to to TO 36297 283 18 be be VB 36297 283 19 of of IN 36297 283 20 the the DT 36297 283 21 " " `` 36297 283 22 judgment judgment NN 36297 283 23 " " '' 36297 283 24 or or CC 36297 283 25 " " `` 36297 283 26 higher high JJR 36297 283 27 - - HYPH 36297 283 28 process process NN 36297 283 29 " " '' 36297 283 30 class class NN 36297 283 31 . . . 36297 284 1 As as IN 36297 284 2 already already RB 36297 284 3 stated state VBN 36297 284 4 , , , 36297 284 5 most most JJS 36297 284 6 of of IN 36297 284 7 the the DT 36297 284 8 other other JJ 36297 284 9 proposed propose VBN 36297 284 10 explanations explanation NNS 36297 284 11 of of IN 36297 284 12 geometrical geometrical JJ 36297 284 13 illusions illusion NNS 36297 284 14 may may MD 36297 284 15 be be VB 36297 284 16 regarded regard VBN 36297 284 17 as as IN 36297 284 18 being be VBG 36297 284 19 related relate VBN 36297 284 20 to to IN 36297 284 21 one one CD 36297 284 22 of of IN 36297 284 23 these these DT 36297 284 24 two two CD 36297 284 25 theories theory NNS 36297 284 26 . . . 36297 285 1 There there EX 36297 285 2 is be VBZ 36297 285 3 the the DT 36297 285 4 " " `` 36297 285 5 indistinct indistinct JJ 36297 285 6 vision vision NN 36297 285 7 " " '' 36297 285 8 theory theory NN 36297 285 9 of of IN 36297 285 10 Einthoven Einthoven NNP 36297 285 11 ; ; : 36297 285 12 the the DT 36297 285 13 " " `` 36297 285 14 perspective perspective NN 36297 285 15 " " '' 36297 285 16 theory theory NN 36297 285 17 of of IN 36297 285 18 Hering Hering NNP 36297 285 19 , , , 36297 285 20 Guye Guye NNP 36297 285 21 , , , 36297 285 22 Thiéry Thiéry NNP 36297 285 23 , , , 36297 285 24 and and CC 36297 285 25 others other NNS 36297 285 26 ; ; : 36297 285 27 the the DT 36297 285 28 " " `` 36297 285 29 contrast contrast NN 36297 285 30 " " '' 36297 285 31 theory theory NN 36297 285 32 of of IN 36297 285 33 Helmholtz Helmholtz NNP 36297 285 34 , , , 36297 285 35 Loeb Loeb NNP 36297 285 36 , , , 36297 285 37 and and CC 36297 285 38 Heyman Heyman NNP 36297 285 39 ; ; : 36297 285 40 and and CC 36297 285 41 the the DT 36297 285 42 " " `` 36297 285 43 contrast-_confluxion contrast-_confluxion NN 36297 285 44 _ _ NNP 36297 285 45 " " '' 36297 285 46 theory theory NN 36297 285 47 of of IN 36297 285 48 Müller Müller NNP 36297 285 49 - - HYPH 36297 285 50 Lyer Lyer NNP 36297 285 51 . . . 36297 286 1 In in IN 36297 286 2 order order NN 36297 286 3 not not RB 36297 286 4 to to TO 36297 286 5 discourage discourage VB 36297 286 6 the the DT 36297 286 7 reader reader NN 36297 286 8 at at IN 36297 286 9 the the DT 36297 286 10 outset outset NN 36297 286 11 , , , 36297 286 12 theories theory NNS 36297 286 13 as as IN 36297 286 14 such such JJ 36297 286 15 will will MD 36297 286 16 be be VB 36297 286 17 passed pass VBN 36297 286 18 by by RP 36297 286 19 with with IN 36297 286 20 this this DT 36297 286 21 brief brief JJ 36297 286 22 glimpse glimpse NN 36297 286 23 . . . 36297 287 1 However however RB 36297 287 2 , , , 36297 287 3 more more RBR 36297 287 4 or or CC 36297 287 5 less less JJR 36297 287 6 qualified qualified JJ 36297 287 7 explanations explanation NNS 36297 287 8 are be VBP 36297 287 9 presented present VBN 36297 287 10 occasionally occasionally RB 36297 287 11 in in IN 36297 287 12 some some DT 36297 287 13 of of IN 36297 287 14 the the DT 36297 287 15 chapters chapter NNS 36297 287 16 which which WDT 36297 287 17 follow follow VBP 36297 287 18 in in IN 36297 287 19 order order NN 36297 287 20 to to TO 36297 287 21 indicate indicate VB 36297 287 22 or or CC 36297 287 23 to to TO 36297 287 24 suggest suggest VB 36297 287 25 a a DT 36297 287 26 train train NN 36297 287 27 of of IN 36297 287 28 thought thought NN 36297 287 29 should should MD 36297 287 30 the the DT 36297 287 31 reader reader NN 36297 287 32 desire desire NN 36297 287 33 to to TO 36297 287 34 attempt attempt VB 36297 287 35 to to TO 36297 287 36 understand understand VB 36297 287 37 some some DT 36297 287 38 of of IN 36297 287 39 the the DT 36297 287 40 numerous numerous JJ 36297 287 41 interesting interesting JJ 36297 287 42 illusions illusion NNS 36297 287 43 . . . 36297 288 1 II II NNP 36297 288 2 THE the DT 36297 288 3 EYE EYE NNP 36297 288 4 Helmholtz Helmholtz NNP 36297 288 5 , , , 36297 288 6 who who WP 36297 288 7 contributed contribute VBD 36297 288 8 so so RB 36297 288 9 much much RB 36297 288 10 toward toward IN 36297 288 11 our -PRON- PRP$ 36297 288 12 knowledge knowledge NN 36297 288 13 of of IN 36297 288 14 the the DT 36297 288 15 visual visual JJ 36297 288 16 process process NN 36297 288 17 , , , 36297 288 18 in in IN 36297 288 19 referring refer VBG 36297 288 20 to to IN 36297 288 21 the the DT 36297 288 22 eye eye NN 36297 288 23 , , , 36297 288 24 once once RB 36297 288 25 stated state VBD 36297 288 26 that that IN 36297 288 27 he -PRON- PRP 36297 288 28 could could MD 36297 288 29 make make VB 36297 288 30 a a DT 36297 288 31 much much RB 36297 288 32 better well JJR 36297 288 33 optical optical JJ 36297 288 34 instrument instrument NN 36297 288 35 but but CC 36297 288 36 not not RB 36297 288 37 a a DT 36297 288 38 better well JJR 36297 288 39 eye eye NN 36297 288 40 . . . 36297 289 1 In in IN 36297 289 2 other other JJ 36297 289 3 words word NNS 36297 289 4 , , , 36297 289 5 the the DT 36297 289 6 eye eye NN 36297 289 7 is be VBZ 36297 289 8 far far RB 36297 289 9 from from IN 36297 289 10 an an DT 36297 289 11 ideal ideal JJ 36297 289 12 optical optical JJ 36297 289 13 instrument instrument NN 36297 289 14 but but CC 36297 289 15 as as IN 36297 289 16 an an DT 36297 289 17 eye eye NN 36297 289 18 it -PRON- PRP 36297 289 19 is be VBZ 36297 289 20 wonderful wonderful JJ 36297 289 21 . . . 36297 290 1 Its -PRON- PRP$ 36297 290 2 range range NN 36297 290 3 of of IN 36297 290 4 sensitiveness sensitiveness NN 36297 290 5 and and CC 36297 290 6 its -PRON- PRP$ 36297 290 7 adaptability adaptability NN 36297 290 8 to to IN 36297 290 9 the the DT 36297 290 10 extreme extreme JJ 36297 290 11 variety variety NN 36297 290 12 of of IN 36297 290 13 demands demand NNS 36297 290 14 upon upon IN 36297 290 15 it -PRON- PRP 36297 290 16 are be VBP 36297 290 17 truly truly RB 36297 290 18 marvelous marvelous JJ 36297 290 19 when when WRB 36297 290 20 compared compare VBN 36297 290 21 with with IN 36297 290 22 instruments instrument NNS 36297 290 23 devised devise VBN 36297 290 24 by by IN 36297 290 25 mankind mankind NN 36297 290 26 . . . 36297 291 1 Obviously obviously RB 36297 291 2 , , , 36297 291 3 the the DT 36297 291 4 eye eye NN 36297 291 5 is be VBZ 36297 291 6 the the DT 36297 291 7 connecting connect VBG 36297 291 8 link link NN 36297 291 9 between between IN 36297 291 10 objective objective JJ 36297 291 11 reality reality NN 36297 291 12 and and CC 36297 291 13 visual visual JJ 36297 291 14 perception perception NN 36297 291 15 and and CC 36297 291 16 , , , 36297 291 17 therefore therefore RB 36297 291 18 , , , 36297 291 19 it -PRON- PRP 36297 291 20 plays play VBZ 36297 291 21 an an DT 36297 291 22 important important JJ 36297 291 23 part part NN 36297 291 24 in in IN 36297 291 25 illusions illusion NNS 36297 291 26 . . . 36297 292 1 In in IN 36297 292 2 fact fact NN 36297 292 3 , , , 36297 292 4 sometimes sometimes RB 36297 292 5 it -PRON- PRP 36297 292 6 is be VBZ 36297 292 7 solely solely RB 36297 292 8 responsible responsible JJ 36297 292 9 for for IN 36297 292 10 the the DT 36297 292 11 illusion illusion NN 36297 292 12 . . . 36297 293 1 The the DT 36297 293 2 process process NN 36297 293 3 of of IN 36297 293 4 vision vision NN 36297 293 5 may may MD 36297 293 6 be be VB 36297 293 7 divided divide VBN 36297 293 8 into into IN 36297 293 9 several several JJ 36297 293 10 steps step NNS 36297 293 11 such such JJ 36297 293 12 as as IN 36297 293 13 ( ( -LRB- 36297 293 14 1 1 LS 36297 293 15 ) ) -RRB- 36297 293 16 the the DT 36297 293 17 lighting lighting NN 36297 293 18 , , , 36297 293 19 color color NN 36297 293 20 , , , 36297 293 21 character character NN 36297 293 22 , , , 36297 293 23 and and CC 36297 293 24 disposition disposition NN 36297 293 25 of of IN 36297 293 26 objects object NNS 36297 293 27 ; ; , 36297 293 28 ( ( -LRB- 36297 293 29 2 2 LS 36297 293 30 ) ) -RRB- 36297 293 31 the the DT 36297 293 32 mechanism mechanism NN 36297 293 33 by by IN 36297 293 34 which which WDT 36297 293 35 the the DT 36297 293 36 image image NN 36297 293 37 is be VBZ 36297 293 38 formed form VBN 36297 293 39 upon upon IN 36297 293 40 the the DT 36297 293 41 retina retina NNP 36297 293 42 ; ; : 36297 293 43 ( ( -LRB- 36297 293 44 3 3 LS 36297 293 45 ) ) -RRB- 36297 293 46 various various JJ 36297 293 47 optical optical JJ 36297 293 48 defects defect NNS 36297 293 49 of of IN 36297 293 50 this this DT 36297 293 51 mechanism mechanism NN 36297 293 52 ; ; , 36297 293 53 ( ( -LRB- 36297 293 54 4 4 LS 36297 293 55 ) ) -RRB- 36297 293 56 the the DT 36297 293 57 sensitiveness sensitiveness NN 36297 293 58 of of IN 36297 293 59 the the DT 36297 293 60 parts part NNS 36297 293 61 of of IN 36297 293 62 the the DT 36297 293 63 retina retina NNP 36297 293 64 to to IN 36297 293 65 light light NN 36297 293 66 and and CC 36297 293 67 color color NN 36297 293 68 ; ; : 36297 293 69 ( ( -LRB- 36297 293 70 5 5 LS 36297 293 71 ) ) -RRB- 36297 293 72 the the DT 36297 293 73 structure structure NN 36297 293 74 of of IN 36297 293 75 the the DT 36297 293 76 retina retina NNP 36297 293 77 ; ; : 36297 293 78 ( ( -LRB- 36297 293 79 6 6 LS 36297 293 80 ) ) -RRB- 36297 293 81 the the DT 36297 293 82 parts part NNS 36297 293 83 played play VBN 36297 293 84 by by IN 36297 293 85 monocular monocular JJ 36297 293 86 and and CC 36297 293 87 binocular binocular JJ 36297 293 88 vision vision NN 36297 293 89 ; ; , 36297 293 90 and and CC 36297 293 91 ( ( -LRB- 36297 293 92 7 7 LS 36297 293 93 ) ) -RRB- 36297 293 94 the the DT 36297 293 95 various various JJ 36297 293 96 events event NNS 36297 293 97 which which WDT 36297 293 98 follow follow VBP 36297 293 99 the the DT 36297 293 100 formation formation NN 36297 293 101 of of IN 36297 293 102 the the DT 36297 293 103 image image NN 36297 293 104 upon upon IN 36297 293 105 the the DT 36297 293 106 retina retina NNP 36297 293 107 . . . 36297 294 1 The the DT 36297 294 2 mechanism mechanism NN 36297 294 3 of of IN 36297 294 4 the the DT 36297 294 5 eye eye NN 36297 294 6 makes make VBZ 36297 294 7 it -PRON- PRP 36297 294 8 possible possible JJ 36297 294 9 to to TO 36297 294 10 see see VB 36297 294 11 not not RB 36297 294 12 only only RB 36297 294 13 light light NN 36297 294 14 but but CC 36297 294 15 objects object NNS 36297 294 16 . . . 36297 295 1 Elementary elementary JJ 36297 295 2 eyes eye NNS 36297 295 3 of of IN 36297 295 4 the the DT 36297 295 5 lowest low JJS 36297 295 6 animals animal NNS 36297 295 7 perceive perceive VBP 36297 295 8 light light NN 36297 295 9 but but CC 36297 295 10 can can MD 36297 295 11 not not RB 36297 295 12 see see VB 36297 295 13 objects object NNS 36297 295 14 . . . 36297 296 1 These these DT 36297 296 2 eyes eye NNS 36297 296 3 are be VBP 36297 296 4 merely merely RB 36297 296 5 specialized specialized JJ 36297 296 6 nerves nerve NNS 36297 296 7 . . . 36297 297 1 In in IN 36297 297 2 the the DT 36297 297 3 human human JJ 36297 297 4 eye eye NN 36297 297 5 the the DT 36297 297 6 optic optic JJ 36297 297 7 nerve nerve NN 36297 297 8 spreads spread VBZ 36297 297 9 to to TO 36297 297 10 form form VB 36297 297 11 the the DT 36297 297 12 retina retina NNP 36297 297 13 and and CC 36297 297 14 the the DT 36297 297 15 latter latter JJ 36297 297 16 is be VBZ 36297 297 17 a a DT 36297 297 18 specialized specialized JJ 36297 297 19 nerve nerve NN 36297 297 20 . . . 36297 298 1 Nature nature NN 36297 298 2 has have VBZ 36297 298 3 accompanied accompany VBN 36297 298 4 this this DT 36297 298 5 evolution evolution NN 36297 298 6 by by IN 36297 298 7 developing develop VBG 36297 298 8 an an DT 36297 298 9 instrument instrument NN 36297 298 10 the the DT 36297 298 11 -- -- : 36297 298 12 eye eye NN 36297 298 13 -- -- : 36297 298 14 for for IN 36297 298 15 intensifying intensify VBG 36297 298 16 and and CC 36297 298 17 defining define VBG 36297 298 18 and and CC 36297 298 19 the the DT 36297 298 20 whole whole NN 36297 298 21 is be VBZ 36297 298 22 the the DT 36297 298 23 visual visual JJ 36297 298 24 sense sense NN 36297 298 25 - - HYPH 36297 298 26 organ organ NN 36297 298 27 . . . 36297 299 1 The the DT 36297 299 2 latter latter NN 36297 299 3 contains contain VBZ 36297 299 4 the the DT 36297 299 5 most most RBS 36297 299 6 highly highly RB 36297 299 7 specialized specialized JJ 36297 299 8 nerve nerve NN 36297 299 9 and and CC 36297 299 10 the the DT 36297 299 11 most most RBS 36297 299 12 refined refined JJ 36297 299 13 physiological physiological JJ 36297 299 14 mechanism mechanism NN 36297 299 15 , , , 36297 299 16 the the DT 36297 299 17 result result NN 36297 299 18 being be VBG 36297 299 19 the the DT 36297 299 20 highest high JJS 36297 299 21 sense sense NN 36297 299 22 - - HYPH 36297 299 23 organ organ NN 36297 299 24 . . . 36297 300 1 [ [ -LRB- 36297 300 2 Illustration illustration NN 36297 300 3 : : : 36297 300 4 Fig Fig NNP 36297 300 5 . . . 36297 301 1 1.--Principal 1.--principal CD 36297 301 2 parts part NNS 36297 301 3 of of IN 36297 301 4 the the DT 36297 301 5 eye eye NN 36297 301 6 . . . 36297 302 1 A a DT 36297 302 2 , , , 36297 302 3 Conjunctiva Conjunctiva NNP 36297 302 4 ; ; : 36297 302 5 B B NNP 36297 302 6 , , , 36297 302 7 Retina Retina NNP 36297 302 8 ; ; : 36297 302 9 C C NNP 36297 302 10 , , , 36297 302 11 Choroid Choroid NNP 36297 302 12 ; ; : 36297 302 13 D D NNP 36297 302 14 , , , 36297 302 15 Sclera sclera NN 36297 302 16 ; ; : 36297 302 17 E E NNP 36297 302 18 , , , 36297 302 19 Fovea Fovea NNP 36297 302 20 ; ; : 36297 302 21 F F NNP 36297 302 22 , , , 36297 302 23 Blind Blind NNP 36297 302 24 Spot Spot NNP 36297 302 25 ; ; : 36297 302 26 G g NN 36297 302 27 , , , 36297 302 28 Optic Optic NNP 36297 302 29 Nerve Nerve NNP 36297 302 30 ; ; : 36297 302 31 H h NN 36297 302 32 , , , 36297 302 33 Ciliary Ciliary NNP 36297 302 34 Muscle Muscle NNP 36297 302 35 ; ; : 36297 302 36 I -PRON- PRP 36297 302 37 , , , 36297 302 38 Iris Iris NNP 36297 302 39 ; ; : 36297 302 40 J J NNP 36297 302 41 , , , 36297 302 42 Cornea Cornea NNP 36297 302 43 ; ; : 36297 302 44 K K NNP 36297 302 45 , , , 36297 302 46 Ligament Ligament NNP 36297 302 47 . . . 36297 302 48 ] ] -RRB- 36297 303 1 The the DT 36297 303 2 eye eye NN 36297 303 3 is be VBZ 36297 303 4 approximately approximately RB 36297 303 5 a a DT 36297 303 6 spherical spherical JJ 36297 303 7 shell shell NN 36297 303 8 transparent transparent NN 36297 303 9 at at IN 36297 303 10 the the DT 36297 303 11 front front JJ 36297 303 12 portion portion NN 36297 303 13 and and CC 36297 303 14 opaque opaque NN 36297 303 15 ( ( -LRB- 36297 303 16 or or CC 36297 303 17 nearly nearly RB 36297 303 18 so so RB 36297 303 19 ) ) -RRB- 36297 303 20 over over IN 36297 303 21 the the DT 36297 303 22 remaining remain VBG 36297 303 23 eighty eighty CD 36297 303 24 per per IN 36297 303 25 cent cent NN 36297 303 26 of of IN 36297 303 27 its -PRON- PRP$ 36297 303 28 surface surface NN 36297 303 29 . . . 36297 304 1 The the DT 36297 304 2 optical optical JJ 36297 304 3 path path NN 36297 304 4 consists consist VBZ 36297 304 5 of of IN 36297 304 6 a a DT 36297 304 7 series series NN 36297 304 8 of of IN 36297 304 9 transparent transparent JJ 36297 304 10 liquids liquid NNS 36297 304 11 and and CC 36297 304 12 solids solid NNS 36297 304 13 . . . 36297 305 1 The the DT 36297 305 2 chief chief JJ 36297 305 3 details detail NNS 36297 305 4 of of IN 36297 305 5 the the DT 36297 305 6 structure structure NN 36297 305 7 of of IN 36297 305 8 the the DT 36297 305 9 eye eye NN 36297 305 10 are be VBP 36297 305 11 represented represent VBN 36297 305 12 in in IN 36297 305 13 Fig Fig NNP 36297 305 14 . . . 36297 306 1 1 1 LS 36297 306 2 . . . 36297 307 1 Beginning begin VBG 36297 307 2 with with IN 36297 307 3 the the DT 36297 307 4 exterior exterior NN 36297 307 5 and and CC 36297 307 6 proceeding proceeding NN 36297 307 7 toward toward IN 36297 307 8 the the DT 36297 307 9 retina retina NNP 36297 307 10 we -PRON- PRP 36297 307 11 find find VBP 36297 307 12 in in IN 36297 307 13 succession succession NN 36297 307 14 the the DT 36297 307 15 cornea cornea NN 36297 307 16 , , , 36297 307 17 the the DT 36297 307 18 anterior anterior NNP 36297 307 19 chamber chamber NN 36297 307 20 containing contain VBG 36297 307 21 the the DT 36297 307 22 aqueous aqueous JJ 36297 307 23 humor humor NN 36297 307 24 , , , 36297 307 25 the the DT 36297 307 26 iris iris NNP 36297 307 27 , , , 36297 307 28 the the DT 36297 307 29 lens lens NN 36297 307 30 , , , 36297 307 31 the the DT 36297 307 32 large large JJ 36297 307 33 chamber chamber NN 36297 307 34 containing contain VBG 36297 307 35 the the DT 36297 307 36 vitreous vitreous JJ 36297 307 37 humor humor NN 36297 307 38 , , , 36297 307 39 and and CC 36297 307 40 finally finally RB 36297 307 41 the the DT 36297 307 42 retina retina NNP 36297 307 43 . . . 36297 308 1 Certain certain JJ 36297 308 2 muscles muscle NNS 36297 308 3 alter alter VBP 36297 308 4 the the DT 36297 308 5 position position NN 36297 308 6 of of IN 36297 308 7 the the DT 36297 308 8 eye eye NN 36297 308 9 and and CC 36297 308 10 consequently consequently RB 36297 308 11 the the DT 36297 308 12 optical optical JJ 36297 308 13 axis axis NN 36297 308 14 , , , 36297 308 15 and and CC 36297 308 16 focusing focus VBG 36297 308 17 ( ( -LRB- 36297 308 18 accommodation accommodation NN 36297 308 19 ) ) -RRB- 36297 308 20 is be VBZ 36297 308 21 accomplished accomplish VBN 36297 308 22 by by IN 36297 308 23 altering alter VBG 36297 308 24 the the DT 36297 308 25 thickness thickness NN 36297 308 26 and and CC 36297 308 27 shape shape NN 36297 308 28 , , , 36297 308 29 and and CC 36297 308 30 consequently consequently RB 36297 308 31 the the DT 36297 308 32 focal focal JJ 36297 308 33 length length NN 36297 308 34 , , , 36297 308 35 of of IN 36297 308 36 the the DT 36297 308 37 lens lens NN 36297 308 38 . . . 36297 309 1 The the DT 36297 309 2 iris iris NN 36297 309 3 is be VBZ 36297 309 4 a a DT 36297 309 5 shutter shutter NN 36297 309 6 which which WDT 36297 309 7 automatically automatically RB 36297 309 8 controls control VBZ 36297 309 9 to to IN 36297 309 10 some some DT 36297 309 11 degree degree NN 36297 309 12 the the DT 36297 309 13 amount amount NN 36297 309 14 of of IN 36297 309 15 light light NN 36297 309 16 reaching reach VBG 36297 309 17 the the DT 36297 309 18 retina retina NNP 36297 309 19 , , , 36297 309 20 thereby thereby RB 36297 309 21 tending tend VBG 36297 309 22 to to TO 36297 309 23 protect protect VB 36297 309 24 the the DT 36297 309 25 latter latter JJ 36297 309 26 from from IN 36297 309 27 too too RB 36297 309 28 much much JJ 36297 309 29 light light NN 36297 309 30 . . . 36297 310 1 It -PRON- PRP 36297 310 2 also also RB 36297 310 3 has have VBZ 36297 310 4 some some DT 36297 310 5 influence influence NN 36297 310 6 upon upon IN 36297 310 7 the the DT 36297 310 8 definition definition NN 36297 310 9 of of IN 36297 310 10 the the DT 36297 310 11 image image NN 36297 310 12 ; ; : 36297 310 13 that that RB 36297 310 14 is is RB 36297 310 15 , , , 36297 310 16 upon upon IN 36297 310 17 what what WP 36297 310 18 is be VBZ 36297 310 19 termed term VBN 36297 310 20 " " `` 36297 310 21 visual visual JJ 36297 310 22 acuity acuity NN 36297 310 23 " " '' 36297 310 24 or or CC 36297 310 25 the the DT 36297 310 26 ability ability NN 36297 310 27 to to TO 36297 310 28 distinguish distinguish VB 36297 310 29 fine fine JJ 36297 310 30 detail detail NN 36297 310 31 . . . 36297 311 1 It -PRON- PRP 36297 311 2 is be VBZ 36297 311 3 interesting interesting JJ 36297 311 4 to to TO 36297 311 5 compare compare VB 36297 311 6 the the DT 36297 311 7 eye eye NN 36297 311 8 with with IN 36297 311 9 the the DT 36297 311 10 camera camera NN 36297 311 11 . . . 36297 312 1 In in IN 36297 312 2 the the DT 36297 312 3 case case NN 36297 312 4 of of IN 36297 312 5 the the DT 36297 312 6 camera camera NN 36297 312 7 and and CC 36297 312 8 the the DT 36297 312 9 photographic photographic JJ 36297 312 10 process process NN 36297 312 11 , , , 36297 312 12 we -PRON- PRP 36297 312 13 have have VBP 36297 312 14 ( ( -LRB- 36297 312 15 1 1 LS 36297 312 16 ) ) -RRB- 36297 312 17 an an DT 36297 312 18 inverted invert VBN 36297 312 19 light light NN 36297 312 20 - - HYPH 36297 312 21 image image NN 36297 312 22 , , , 36297 312 23 a a DT 36297 312 24 facsimile facsimile NN 36297 312 25 of of IN 36297 312 26 the the DT 36297 312 27 object object NN 36297 312 28 usually usually RB 36297 312 29 diminished diminish VBN 36297 312 30 in in IN 36297 312 31 size size NN 36297 312 32 ; ; : 36297 312 33 ( ( -LRB- 36297 312 34 2 2 LS 36297 312 35 ) ) -RRB- 36297 312 36 an an DT 36297 312 37 invisible invisible JJ 36297 312 38 image image NN 36297 312 39 in in IN 36297 312 40 the the DT 36297 312 41 photographic photographic JJ 36297 312 42 emulsion emulsion NN 36297 312 43 consisting consist VBG 36297 312 44 of of IN 36297 312 45 molecular molecular JJ 36297 312 46 changes change NNS 36297 312 47 due due JJ 36297 312 48 to to IN 36297 312 49 light light NN 36297 312 50 ; ; : 36297 312 51 and and CC 36297 312 52 ( ( -LRB- 36297 312 53 3 3 LS 36297 312 54 ) ) -RRB- 36297 312 55 a a DT 36297 312 56 visible visible JJ 36297 312 57 image image NN 36297 312 58 developed develop VBN 36297 312 59 on on IN 36297 312 60 the the DT 36297 312 61 plate plate NN 36297 312 62 . . . 36297 313 1 In in IN 36297 313 2 the the DT 36297 313 3 case case NN 36297 313 4 of of IN 36297 313 5 the the DT 36297 313 6 eye eye NN 36297 313 7 and and CC 36297 313 8 the the DT 36297 313 9 visual visual JJ 36297 313 10 process process NN 36297 313 11 we -PRON- PRP 36297 313 12 have have VBP 36297 313 13 ( ( -LRB- 36297 313 14 1 1 LS 36297 313 15 ) ) -RRB- 36297 313 16 an an DT 36297 313 17 inverted invert VBN 36297 313 18 light light NN 36297 313 19 - - HYPH 36297 313 20 image image NN 36297 313 21 , , , 36297 313 22 a a DT 36297 313 23 facsimile facsimile NN 36297 313 24 of of IN 36297 313 25 the the DT 36297 313 26 object object NN 36297 313 27 diminished diminish VBN 36297 313 28 in in IN 36297 313 29 size size NN 36297 313 30 ; ; : 36297 313 31 ( ( -LRB- 36297 313 32 2 2 LS 36297 313 33 ) ) -RRB- 36297 313 34 the the DT 36297 313 35 invisible invisible JJ 36297 313 36 image image NN 36297 313 37 in in IN 36297 313 38 the the DT 36297 313 39 retinal retinal JJ 36297 313 40 substances substance NNS 36297 313 41 probably probably RB 36297 313 42 consisting consist VBG 36297 313 43 of of IN 36297 313 44 molecular molecular JJ 36297 313 45 changes change NNS 36297 313 46 due due JJ 36297 313 47 to to IN 36297 313 48 light light NN 36297 313 49 ; ; : 36297 313 50 and and CC 36297 313 51 ( ( -LRB- 36297 313 52 3 3 LS 36297 313 53 ) ) -RRB- 36297 313 54 an an DT 36297 313 55 _ _ NNP 36297 313 56 external external JJ 36297 313 57 _ _ NNP 36297 313 58 visible visible JJ 36297 313 59 image image NN 36297 313 60 . . . 36297 314 1 It -PRON- PRP 36297 314 2 will will MD 36297 314 3 be be VB 36297 314 4 noted note VBN 36297 314 5 that that IN 36297 314 6 in in IN 36297 314 7 the the DT 36297 314 8 case case NN 36297 314 9 of of IN 36297 314 10 vision vision NN 36297 314 11 the the DT 36297 314 12 final final JJ 36297 314 13 image image NN 36297 314 14 is be VBZ 36297 314 15 projected project VBN 36297 314 16 outward outward RB 36297 314 17 -- -- : 36297 314 18 it -PRON- PRP 36297 314 19 is be VBZ 36297 314 20 external external JJ 36297 314 21 . . . 36297 315 1 The the DT 36297 315 2 more more RBR 36297 315 3 we -PRON- PRP 36297 315 4 think think VBP 36297 315 5 of of IN 36297 315 6 this this DT 36297 315 7 outward outward JJ 36297 315 8 projection projection NN 36297 315 9 the the DT 36297 315 10 more more RBR 36297 315 11 interesting interesting JJ 36297 315 12 and and CC 36297 315 13 marvelous marvelous JJ 36297 315 14 vision vision NN 36297 315 15 becomes become NNS 36297 315 16 . . . 36297 316 1 For for IN 36297 316 2 example example NN 36297 316 3 , , , 36297 316 4 it -PRON- PRP 36297 316 5 appears appear VBZ 36297 316 6 certain certain JJ 36297 316 7 that that IN 36297 316 8 if if IN 36297 316 9 a a DT 36297 316 10 photographic photographic JJ 36297 316 11 plate plate NN 36297 316 12 could could MD 36297 316 13 see see VB 36297 316 14 or or CC 36297 316 15 feel feel VB 36297 316 16 , , , 36297 316 17 it -PRON- PRP 36297 316 18 would would MD 36297 316 19 see see VB 36297 316 20 or or CC 36297 316 21 feel feel VB 36297 316 22 the the DT 36297 316 23 silver silver JJ 36297 316 24 image image NN 36297 316 25 upon upon IN 36297 316 26 itself -PRON- PRP 36297 316 27 but but CC 36297 316 28 not not RB 36297 316 29 out out RB 36297 316 30 in in IN 36297 316 31 space space NN 36297 316 32 . . . 36297 317 1 However however RB 36297 317 2 , , , 36297 317 3 this this DT 36297 317 4 point point NN 36297 317 5 is be VBZ 36297 317 6 discussed discuss VBN 36297 317 7 further further RB 36297 317 8 in in IN 36297 317 9 the the DT 36297 317 10 next next JJ 36297 317 11 chapter chapter NN 36297 317 12 . . . 36297 318 1 In in IN 36297 318 2 the the DT 36297 318 3 camera camera NN 36297 318 4 and and CC 36297 318 5 photographic photographic JJ 36297 318 6 process process NN 36297 318 7 we -PRON- PRP 36297 318 8 trace trace VBP 36297 318 9 mechanism mechanism NN 36297 318 10 , , , 36297 318 11 physics physics NN 36297 318 12 , , , 36297 318 13 and and CC 36297 318 14 chemistry chemistry NN 36297 318 15 throughout throughout RB 36297 318 16 . . . 36297 319 1 In in IN 36297 319 2 the the DT 36297 319 3 eye eye NN 36297 319 4 and and CC 36297 319 5 visual visual JJ 36297 319 6 process process NN 36297 319 7 we -PRON- PRP 36297 319 8 are be VBP 36297 319 9 able able JJ 36297 319 10 to to TO 36297 319 11 trace trace VB 36297 319 12 these these DT 36297 319 13 factors factor NNS 36297 319 14 only only RB 36297 319 15 to to IN 36297 319 16 a a DT 36297 319 17 certain certain JJ 36297 319 18 point point NN 36297 319 19 , , , 36297 319 20 where where WRB 36297 319 21 we -PRON- PRP 36297 319 22 encounter encounter VBP 36297 319 23 the the DT 36297 319 24 super super JJ 36297 319 25 - - JJ 36297 319 26 physical physical JJ 36297 319 27 and and CC 36297 319 28 super super JJ 36297 319 29 - - JJ 36297 319 30 chemical chemical JJ 36297 319 31 . . . 36297 320 1 Here here RB 36297 320 2 molecular molecular JJ 36297 320 3 change change NN 36297 320 4 is be VBZ 36297 320 5 replaced replace VBN 36297 320 6 by by IN 36297 320 7 sensation sensation NN 36297 320 8 , , , 36297 320 9 perception perception NN 36297 320 10 , , , 36297 320 11 thought thought NN 36297 320 12 , , , 36297 320 13 and and CC 36297 320 14 emotion emotion NN 36297 320 15 . . . 36297 321 1 Our -PRON- PRP$ 36297 321 2 exploration exploration NN 36297 321 3 takes take VBZ 36297 321 4 us -PRON- PRP 36297 321 5 from from IN 36297 321 6 the the DT 36297 321 7 physical physical JJ 36297 321 8 world world NN 36297 321 9 into into IN 36297 321 10 another another DT 36297 321 11 , , , 36297 321 12 wholly wholly RB 36297 321 13 different different JJ 36297 321 14 , , , 36297 321 15 where where WRB 36297 321 16 there there EX 36297 321 17 reigns reign VBZ 36297 321 18 another another DT 36297 321 19 order order NN 36297 321 20 of of IN 36297 321 21 phenomena phenomenon NNS 36297 321 22 . . . 36297 322 1 We -PRON- PRP 36297 322 2 have have VBP 36297 322 3 passed pass VBN 36297 322 4 from from IN 36297 322 5 the the DT 36297 322 6 material material NN 36297 322 7 into into IN 36297 322 8 the the DT 36297 322 9 mental mental JJ 36297 322 10 world world NN 36297 322 11 . . . 36297 323 1 The the DT 36297 323 2 eye eye NN 36297 323 3 as as IN 36297 323 4 an an DT 36297 323 5 optical optical JJ 36297 323 6 mechanism mechanism NN 36297 323 7 is be VBZ 36297 323 8 reducible reducible JJ 36297 323 9 to to IN 36297 323 10 a a DT 36297 323 11 single single JJ 36297 323 12 lens lens NN 36297 323 13 and and CC 36297 323 14 therefore therefore RB 36297 323 15 the the DT 36297 323 16 image image NN 36297 323 17 focused focus VBD 36297 323 18 upon upon IN 36297 323 19 the the DT 36297 323 20 retina retina NNP 36297 323 21 is be VBZ 36297 323 22 inverted invert VBN 36297 323 23 . . . 36297 324 1 However however RB 36297 324 2 , , , 36297 324 3 there there EX 36297 324 4 is be VBZ 36297 324 5 no no DT 36297 324 6 way way NN 36297 324 7 for for IN 36297 324 8 the the DT 36297 324 9 observer observer NN 36297 324 10 to to TO 36297 324 11 be be VB 36297 324 12 conscious conscious JJ 36297 324 13 of of IN 36297 324 14 this this DT 36297 324 15 and and CC 36297 324 16 therefore therefore RB 36297 324 17 the the DT 36297 324 18 inverted invert VBN 36297 324 19 image image NN 36297 324 20 causes cause VBZ 36297 324 21 no no DT 36297 324 22 difficulty difficulty NN 36297 324 23 in in IN 36297 324 24 seeing see VBG 36297 324 25 . . . 36297 325 1 The the DT 36297 325 2 images image NNS 36297 325 3 of of IN 36297 325 4 objects object NNS 36297 325 5 in in IN 36297 325 6 the the DT 36297 325 7 right right JJ 36297 325 8 half half NN 36297 325 9 of of IN 36297 325 10 the the DT 36297 325 11 field field NN 36297 325 12 of of IN 36297 325 13 view view NN 36297 325 14 are be VBP 36297 325 15 focused focus VBN 36297 325 16 upon upon IN 36297 325 17 the the DT 36297 325 18 left left JJ 36297 325 19 half half NN 36297 325 20 of of IN 36297 325 21 the the DT 36297 325 22 retina retina NNP 36297 325 23 . . . 36297 326 1 Similarly similarly RB 36297 326 2 , , , 36297 326 3 the the DT 36297 326 4 left left JJ 36297 326 5 half half NN 36297 326 6 of of IN 36297 326 7 the the DT 36297 326 8 field field NN 36297 326 9 of of IN 36297 326 10 view view NN 36297 326 11 corresponds correspond VBZ 36297 326 12 to to IN 36297 326 13 the the DT 36297 326 14 right right JJ 36297 326 15 half half NN 36297 326 16 of of IN 36297 326 17 the the DT 36297 326 18 retina retina NNP 36297 326 19 ; ; : 36297 326 20 the the DT 36297 326 21 upper upper JJ 36297 326 22 half half NN 36297 326 23 of of IN 36297 326 24 the the DT 36297 326 25 former former JJ 36297 326 26 to to IN 36297 326 27 the the DT 36297 326 28 lower low JJR 36297 326 29 half half NN 36297 326 30 of of IN 36297 326 31 the the DT 36297 326 32 latter latter JJ 36297 326 33 ; ; : 36297 326 34 and and CC 36297 326 35 so so RB 36297 326 36 on on RB 36297 326 37 . . . 36297 327 1 When when WRB 36297 327 2 a a DT 36297 327 3 ray ray NN 36297 327 4 of of IN 36297 327 5 light light NN 36297 327 6 from from IN 36297 327 7 an an DT 36297 327 8 object object NN 36297 327 9 strikes strike VBZ 36297 327 10 the the DT 36297 327 11 retina retina NNP 36297 327 12 the the DT 36297 327 13 impression impression NN 36297 327 14 is be VBZ 36297 327 15 referred refer VBN 36297 327 16 back back RB 36297 327 17 along along IN 36297 327 18 the the DT 36297 327 19 ray ray NN 36297 327 20 - - HYPH 36297 327 21 line line NN 36297 327 22 into into IN 36297 327 23 the the DT 36297 327 24 original original JJ 36297 327 25 place place NN 36297 327 26 in in IN 36297 327 27 space space NN 36297 327 28 . . . 36297 328 1 This this DT 36297 328 2 is be VBZ 36297 328 3 interestingly interestingly RB 36297 328 4 demonstrated demonstrate VBN 36297 328 5 in in IN 36297 328 6 a a DT 36297 328 7 simple simple JJ 36297 328 8 manner manner NN 36297 328 9 . . . 36297 329 1 Punch punch VB 36297 329 2 a a DT 36297 329 3 pin pin NN 36297 329 4 - - HYPH 36297 329 5 hole hole NN 36297 329 6 in in IN 36297 329 7 a a DT 36297 329 8 card card NN 36297 329 9 and and CC 36297 329 10 hold hold VB 36297 329 11 it -PRON- PRP 36297 329 12 about about IN 36297 329 13 four four CD 36297 329 14 inches inch NNS 36297 329 15 from from IN 36297 329 16 the the DT 36297 329 17 eye eye NN 36297 329 18 and and CC 36297 329 19 at at IN 36297 329 20 the the DT 36297 329 21 same same JJ 36297 329 22 time time NN 36297 329 23 hold hold VB 36297 329 24 a a DT 36297 329 25 pin pin NN 36297 329 26 - - HYPH 36297 329 27 head head NN 36297 329 28 as as RB 36297 329 29 close close RB 36297 329 30 to to IN 36297 329 31 the the DT 36297 329 32 cornea cornea NN 36297 329 33 as as IN 36297 329 34 possible possible JJ 36297 329 35 . . . 36297 330 1 The the DT 36297 330 2 background background NN 36297 330 3 for for IN 36297 330 4 the the DT 36297 330 5 pin pin NN 36297 330 6 - - HYPH 36297 330 7 hole hole NN 36297 330 8 should should MD 36297 330 9 be be VB 36297 330 10 the the DT 36297 330 11 sky sky NN 36297 330 12 or or CC 36297 330 13 other other JJ 36297 330 14 bright bright JJ 36297 330 15 surface surface NN 36297 330 16 . . . 36297 331 1 After after IN 36297 331 2 a a DT 36297 331 3 brief brief JJ 36297 331 4 trial trial NN 36297 331 5 an an DT 36297 331 6 inverted invert VBN 36297 331 7 image image NN 36297 331 8 of of IN 36297 331 9 the the DT 36297 331 10 pin pin NN 36297 331 11 - - HYPH 36297 331 12 head head NN 36297 331 13 is be VBZ 36297 331 14 seen see VBN 36297 331 15 _ _ NNP 36297 331 16 in in IN 36297 331 17 the the DT 36297 331 18 hole hole NN 36297 331 19 _ _ NNP 36297 331 20 . . . 36297 332 1 Punch punch VB 36297 332 2 several several JJ 36297 332 3 holes hole NNS 36297 332 4 in in IN 36297 332 5 the the DT 36297 332 6 card card NN 36297 332 7 and and CC 36297 332 8 in in IN 36297 332 9 each each DT 36297 332 10 will will MD 36297 332 11 be be VB 36297 332 12 seen see VBN 36297 332 13 an an DT 36297 332 14 inverted invert VBN 36297 332 15 image image NN 36297 332 16 of of IN 36297 332 17 the the DT 36297 332 18 pin pin NN 36297 332 19 - - HYPH 36297 332 20 head head NN 36297 332 21 . . . 36297 333 1 The the DT 36297 333 2 explanation explanation NN 36297 333 3 of of IN 36297 333 4 the the DT 36297 333 5 foregoing foregoing NN 36297 333 6 is be VBZ 36297 333 7 not not RB 36297 333 8 difficult difficult JJ 36297 333 9 . . . 36297 334 1 The the DT 36297 334 2 pin pin NN 36297 334 3 - - HYPH 36297 334 4 head head NN 36297 334 5 is be VBZ 36297 334 6 so so RB 36297 334 7 close close JJ 36297 334 8 to to IN 36297 334 9 the the DT 36297 334 10 eye eye NN 36297 334 11 that that IN 36297 334 12 the the DT 36297 334 13 image image NN 36297 334 14 can can MD 36297 334 15 not not RB 36297 334 16 be be VB 36297 334 17 focused focus VBN 36297 334 18 upon upon IN 36297 334 19 the the DT 36297 334 20 retina retina NNP 36297 334 21 ; ; : 36297 334 22 however however RB 36297 334 23 , , , 36297 334 24 it -PRON- PRP 36297 334 25 is be VBZ 36297 334 26 in in IN 36297 334 27 a a DT 36297 334 28 very very RB 36297 334 29 favorable favorable JJ 36297 334 30 position position NN 36297 334 31 to to TO 36297 334 32 cast cast VB 36297 334 33 a a DT 36297 334 34 shadow shadow NN 36297 334 35 upon upon IN 36297 334 36 the the DT 36297 334 37 retina retina NNP 36297 334 38 , , , 36297 334 39 the the DT 36297 334 40 light light JJ 36297 334 41 - - HYPH 36297 334 42 source source NN 36297 334 43 being be VBG 36297 334 44 the the DT 36297 334 45 pin pin NN 36297 334 46 - - HYPH 36297 334 47 hole hole NN 36297 334 48 with with IN 36297 334 49 a a DT 36297 334 50 bright bright JJ 36297 334 51 background background NN 36297 334 52 . . . 36297 335 1 Light light JJ 36297 335 2 streaming streaming NN 36297 335 3 through through IN 36297 335 4 the the DT 36297 335 5 pin pin NN 36297 335 6 - - HYPH 36297 335 7 hole hole NN 36297 335 8 into into IN 36297 335 9 the the DT 36297 335 10 eye eye NN 36297 335 11 casts cast VBZ 36297 335 12 an an DT 36297 335 13 erect erect NN 36297 335 14 shadow shadow NN 36297 335 15 of of IN 36297 335 16 the the DT 36297 335 17 pin pin NN 36297 335 18 - - HYPH 36297 335 19 head head NN 36297 335 20 upon upon IN 36297 335 21 the the DT 36297 335 22 retina retina NNP 36297 335 23 , , , 36297 335 24 and and CC 36297 335 25 this this DT 36297 335 26 erect erect NN 36297 335 27 image image NN 36297 335 28 is be VBZ 36297 335 29 projected project VBN 36297 335 30 into into IN 36297 335 31 space space NN 36297 335 32 and and CC 36297 335 33 inverted invert VBN 36297 335 34 in in IN 36297 335 35 the the DT 36297 335 36 process process NN 36297 335 37 by by IN 36297 335 38 the the DT 36297 335 39 effect effect NN 36297 335 40 of of IN 36297 335 41 the the DT 36297 335 42 lens lens NN 36297 335 43 . . . 36297 336 1 The the DT 36297 336 2 latter latter JJ 36297 336 3 is be VBZ 36297 336 4 not not RB 36297 336 5 operative operative JJ 36297 336 6 during during IN 36297 336 7 the the DT 36297 336 8 casting casting NN 36297 336 9 of of IN 36297 336 10 the the DT 36297 336 11 shadow shadow NN 36297 336 12 because because IN 36297 336 13 the the DT 36297 336 14 pin pin NN 36297 336 15 - - HYPH 36297 336 16 head head NN 36297 336 17 is be VBZ 36297 336 18 too too RB 36297 336 19 close close JJ 36297 336 20 to to IN 36297 336 21 the the DT 36297 336 22 lens lens NN 36297 336 23 , , , 36297 336 24 as as RB 36297 336 25 already already RB 36297 336 26 stated state VBN 36297 336 27 . . . 36297 337 1 It -PRON- PRP 36297 337 2 is be VBZ 36297 337 3 further further RB 36297 337 4 proved prove VBN 36297 337 5 to to TO 36297 337 6 be be VB 36297 337 7 outward outward JJ 36297 337 8 projection projection NN 36297 337 9 of of IN 36297 337 10 the the DT 36297 337 11 retinal retinal JJ 36297 337 12 image image NN 36297 337 13 ( ( -LRB- 36297 337 14 the the DT 36297 337 15 shadow shadow NN 36297 337 16 ) ) -RRB- 36297 337 17 because because IN 36297 337 18 by by IN 36297 337 19 multiplying multiply VBG 36297 337 20 the the DT 36297 337 21 number number NN 36297 337 22 of of IN 36297 337 23 pin pin NN 36297 337 24 - - HYPH 36297 337 25 holes hole NNS 36297 337 26 ( ( -LRB- 36297 337 27 the the DT 36297 337 28 light light NN 36297 337 29 - - HYPH 36297 337 30 sources source NNS 36297 337 31 ) ) -RRB- 36297 337 32 there there EX 36297 337 33 are be VBP 36297 337 34 also also RB 36297 337 35 a a DT 36297 337 36 corresponding corresponding JJ 36297 337 37 number number NN 36297 337 38 of of IN 36297 337 39 shadows shadow NNS 36297 337 40 . . . 36297 338 1 The the DT 36297 338 2 foregoing foregoing NN 36297 338 3 not not RB 36297 338 4 only only RB 36297 338 5 illustrates illustrate VBZ 36297 338 6 the the DT 36297 338 7 inversion inversion NN 36297 338 8 of of IN 36297 338 9 the the DT 36297 338 10 image image NN 36297 338 11 but but CC 36297 338 12 again again RB 36297 338 13 emphasizes emphasize VBZ 36297 338 14 the the DT 36297 338 15 fact fact NN 36297 338 16 that that IN 36297 338 17 we -PRON- PRP 36297 338 18 do do VBP 36297 338 19 not not RB 36297 338 20 see see VB 36297 338 21 retinal retinal JJ 36297 338 22 images image NNS 36297 338 23 . . . 36297 339 1 Even even RB 36297 339 2 the the DT 36297 339 3 " " `` 36297 339 4 stars star NNS 36297 339 5 " " '' 36297 339 6 which which WDT 36297 339 7 we -PRON- PRP 36297 339 8 see see VBP 36297 339 9 on on IN 36297 339 10 pressing press VBG 36297 339 11 the the DT 36297 339 12 eye eye NN 36297 339 13 - - HYPH 36297 339 14 lid lid NN 36297 339 15 or or CC 36297 339 16 on on IN 36297 339 17 receiving receive VBG 36297 339 18 a a DT 36297 339 19 blow blow NN 36297 339 20 on on IN 36297 339 21 the the DT 36297 339 22 eye eye NN 36297 339 23 are be VBP 36297 339 24 projected project VBN 36297 339 25 into into IN 36297 339 26 space space NN 36297 339 27 . . . 36297 340 1 The the DT 36297 340 2 " " `` 36297 340 3 motes mote NNS 36297 340 4 " " '' 36297 340 5 which which WDT 36297 340 6 we -PRON- PRP 36297 340 7 see see VBP 36297 340 8 in in IN 36297 340 9 the the DT 36297 340 10 visual visual JJ 36297 340 11 field field NN 36297 340 12 while while IN 36297 340 13 gazing gaze VBG 36297 340 14 at at IN 36297 340 15 the the DT 36297 340 16 sky sky NN 36297 340 17 are be VBP 36297 340 18 defects defect NNS 36297 340 19 in in IN 36297 340 20 the the DT 36297 340 21 eye eye NN 36297 340 22 - - HYPH 36297 340 23 media medium NNS 36297 340 24 , , , 36297 340 25 and and CC 36297 340 26 these these DT 36297 340 27 images image NNS 36297 340 28 are be VBP 36297 340 29 projected project VBN 36297 340 30 into into IN 36297 340 31 space space NN 36297 340 32 . . . 36297 341 1 We -PRON- PRP 36297 341 2 do do VBP 36297 341 3 not not RB 36297 341 4 see see VB 36297 341 5 anything anything NN 36297 341 6 in in IN 36297 341 7 the the DT 36297 341 8 eye eye NN 36297 341 9 . . . 36297 342 1 The the DT 36297 342 2 retinal retinal JJ 36297 342 3 image image NN 36297 342 4 impresses impress VBZ 36297 342 5 the the DT 36297 342 6 retina retina NNP 36297 342 7 in in IN 36297 342 8 some some DT 36297 342 9 definite definite JJ 36297 342 10 manner manner NN 36297 342 11 and and CC 36297 342 12 the the DT 36297 342 13 impression impression NN 36297 342 14 is be VBZ 36297 342 15 carried carry VBN 36297 342 16 to to IN 36297 342 17 the the DT 36297 342 18 brain brain NN 36297 342 19 by by IN 36297 342 20 the the DT 36297 342 21 optic optic JJ 36297 342 22 nerve nerve NN 36297 342 23 . . . 36297 343 1 The the DT 36297 343 2 intellect intellect NN 36297 343 3 then then RB 36297 343 4 refers refer VBZ 36297 343 5 or or CC 36297 343 6 projects project NNS 36297 343 7 this this DT 36297 343 8 impression impression NN 36297 343 9 outward outward RB 36297 343 10 into into IN 36297 343 11 space space NN 36297 343 12 as as IN 36297 343 13 an an DT 36297 343 14 external external JJ 36297 343 15 image image NN 36297 343 16 . . . 36297 344 1 The the DT 36297 344 2 latter latter JJ 36297 344 3 would would MD 36297 344 4 be be VB 36297 344 5 a a DT 36297 344 6 facsimile facsimile NN 36297 344 7 of of IN 36297 344 8 the the DT 36297 344 9 physical physical JJ 36297 344 10 object object NN 36297 344 11 if if IN 36297 344 12 there there EX 36297 344 13 were be VBD 36297 344 14 no no DT 36297 344 15 illusions illusion NNS 36297 344 16 but but CC 36297 344 17 the the DT 36297 344 18 fact fact NN 36297 344 19 that that IN 36297 344 20 there there EX 36297 344 21 are be VBP 36297 344 22 illusions illusion NNS 36297 344 23 indicates indicate VBZ 36297 344 24 that that IN 36297 344 25 errors error NNS 36297 344 26 are be VBP 36297 344 27 introduced introduce VBN 36297 344 28 somewhere somewhere RB 36297 344 29 along along IN 36297 344 30 the the DT 36297 344 31 path path NN 36297 344 32 from from IN 36297 344 33 and and CC 36297 344 34 to to IN 36297 344 35 the the DT 36297 344 36 object object NN 36297 344 37 . . . 36297 345 1 It -PRON- PRP 36297 345 2 is be VBZ 36297 345 3 interesting interesting JJ 36297 345 4 to to TO 36297 345 5 speculate speculate VB 36297 345 6 whether whether IN 36297 345 7 the the DT 36297 345 8 first first JJ 36297 345 9 visual visual JJ 36297 345 10 impression impression NN 36297 345 11 of of IN 36297 345 12 a a DT 36297 345 13 new new RB 36297 345 14 - - HYPH 36297 345 15 born bear VBN 36297 345 16 babe babe NNP 36297 345 17 is be VBZ 36297 345 18 " " `` 36297 345 19 projected project VBN 36297 345 20 outward outward RB 36297 345 21 " " '' 36297 345 22 or or CC 36297 345 23 is be VBZ 36297 345 24 perceived perceive VBN 36297 345 25 as as IN 36297 345 26 in in IN 36297 345 27 the the DT 36297 345 28 eye eye NN 36297 345 29 . . . 36297 346 1 It -PRON- PRP 36297 346 2 is be VBZ 36297 346 3 equally equally RB 36297 346 4 futile futile JJ 36297 346 5 to to IN 36297 346 6 conjecture conjecture NN 36297 346 7 in in IN 36297 346 8 this this DT 36297 346 9 manner manner NN 36297 346 10 because because IN 36297 346 11 there there EX 36297 346 12 is be VBZ 36297 346 13 no no DT 36297 346 14 indication indication NN 36297 346 15 that that IN 36297 346 16 the the DT 36297 346 17 time time NN 36297 346 18 will will MD 36297 346 19 come come VB 36297 346 20 when when WRB 36297 346 21 the the DT 36297 346 22 baby baby NN 36297 346 23 can can MD 36297 346 24 answer answer VB 36297 346 25 us -PRON- PRP 36297 346 26 immediately immediately RB 36297 346 27 upon upon IN 36297 346 28 experiencing experience VBG 36297 346 29 its -PRON- PRP$ 36297 346 30 first first JJ 36297 346 31 visual visual JJ 36297 346 32 impression impression NN 36297 346 33 . . . 36297 347 1 The the DT 36297 347 2 period period NN 36297 347 3 of of IN 36297 347 4 infancy infancy NN 36297 347 5 increases increase NNS 36297 347 6 with with IN 36297 347 7 progress progress NN 36297 347 8 up up RP 36297 347 9 the the DT 36297 347 10 scale scale NN 36297 347 11 of of IN 36297 347 12 animal animal NN 36297 347 13 life life NN 36297 347 14 and and CC 36297 347 15 this this DT 36297 347 16 lengthening lengthening NN 36297 347 17 is be VBZ 36297 347 18 doubtless doubtless RB 36297 347 19 responsible responsible JJ 36297 347 20 and and CC 36297 347 21 perhaps perhaps RB 36297 347 22 necessary necessary JJ 36297 347 23 for for IN 36297 347 24 the the DT 36297 347 25 development development NN 36297 347 26 of of IN 36297 347 27 highly highly RB 36297 347 28 specialized specialized JJ 36297 347 29 sense sense NN 36297 347 30 - - HYPH 36297 347 31 organs organ NNS 36297 347 32 . . . 36297 348 1 Incidentally incidentally RB 36297 348 2 , , , 36297 348 3 suppose suppose VB 36297 348 4 a a DT 36297 348 5 blind blind JJ 36297 348 6 person person NN 36297 348 7 to to TO 36297 348 8 be be VB 36297 348 9 absolutely absolutely RB 36297 348 10 uneducated uneducated JJ 36297 348 11 by by IN 36297 348 12 transferred transfer VBN 36297 348 13 experience experience NN 36297 348 14 and and CC 36297 348 15 that that IN 36297 348 16 he -PRON- PRP 36297 348 17 suddenly suddenly RB 36297 348 18 became become VBD 36297 348 19 a a DT 36297 348 20 normal normal JJ 36297 348 21 adult adult NN 36297 348 22 and and CC 36297 348 23 able able JJ 36297 348 24 to to TO 36297 348 25 see see VB 36297 348 26 . . . 36297 349 1 What what WP 36297 349 2 would would MD 36297 349 3 he -PRON- PRP 36297 349 4 say say VB 36297 349 5 about about IN 36297 349 6 his -PRON- PRP$ 36297 349 7 first first JJ 36297 349 8 visual visual JJ 36297 349 9 impression impression NN 36297 349 10 ? ? . 36297 350 1 Apparently apparently RB 36297 350 2 such such PDT 36297 350 3 a a DT 36297 350 4 subject subject NN 36297 350 5 is be VBZ 36297 350 6 unobtainable unobtainable JJ 36297 350 7 . . . 36297 351 1 The the DT 36297 351 2 nearest near JJS 36297 351 3 that that IN 36297 351 4 such such PDT 36297 351 5 a a DT 36297 351 6 case case NN 36297 351 7 had have VBD 36297 351 8 been be VBN 36297 351 9 approached approach VBN 36297 351 10 is be VBZ 36297 351 11 the the DT 36297 351 12 case case NN 36297 351 13 of of IN 36297 351 14 a a DT 36297 351 15 person person NN 36297 351 16 born bear VBN 36297 351 17 blind blind JJ 36297 351 18 , , , 36297 351 19 whose whose WP$ 36297 351 20 sight sight NN 36297 351 21 has have VBZ 36297 351 22 been be VBN 36297 351 23 restored restore VBN 36297 351 24 . . . 36297 352 1 This this DT 36297 352 2 person person NN 36297 352 3 has have VBZ 36297 352 4 acquired acquire VBN 36297 352 5 much much JJ 36297 352 6 experience experience NN 36297 352 7 with with IN 36297 352 8 the the DT 36297 352 9 external external JJ 36297 352 10 world world NN 36297 352 11 through through IN 36297 352 12 other other JJ 36297 352 13 senses sense NNS 36297 352 14 . . . 36297 353 1 It -PRON- PRP 36297 353 2 has have VBZ 36297 353 3 been be VBN 36297 353 4 recorded record VBN 36297 353 5 that that IN 36297 353 6 such such PDT 36297 353 7 a a DT 36297 353 8 person person NN 36297 353 9 , , , 36297 353 10 after after IN 36297 353 11 sight sight NN 36297 353 12 was be VBD 36297 353 13 restored restore VBN 36297 353 14 , , , 36297 353 15 appeared appear VBD 36297 353 16 to to TO 36297 353 17 think think VB 36297 353 18 that that IN 36297 353 19 external external JJ 36297 353 20 objects object NNS 36297 353 21 " " `` 36297 353 22 touched touch VBD 36297 353 23 " " '' 36297 353 24 the the DT 36297 353 25 eyes eye NNS 36297 353 26 . . . 36297 354 1 Only only RB 36297 354 2 through through IN 36297 354 3 visual visual JJ 36297 354 4 experience experience NN 36297 354 5 is be VBZ 36297 354 6 this this DT 36297 354 7 error error NN 36297 354 8 in in IN 36297 354 9 judgment judgment NN 36297 354 10 rectified rectified JJ 36297 354 11 . . . 36297 355 1 Man Man NNP 36297 355 2 studies study VBZ 36297 355 3 his -PRON- PRP$ 36297 355 4 kind kind NN 36297 355 5 too too RB 36297 355 6 much much RB 36297 355 7 apart apart RB 36297 355 8 from from IN 36297 355 9 other other JJ 36297 355 10 animals animal NNS 36297 355 11 and and CC 36297 355 12 perhaps perhaps RB 36297 355 13 either either DT 36297 355 14 underestimates underestimate VBZ 36297 355 15 or or CC 36297 355 16 overestimates overestimate VBZ 36297 355 17 the the DT 36297 355 18 amount amount NN 36297 355 19 of of IN 36297 355 20 inherited inherit VBN 36297 355 21 , , , 36297 355 22 innate innate VBP 36297 355 23 , , , 36297 355 24 instinctive instinctive JJ 36297 355 25 qualities quality NNS 36297 355 26 . . . 36297 356 1 A a DT 36297 356 2 new new RB 36297 356 3 - - HYPH 36297 356 4 born bear VBN 36297 356 5 chick chick NNP 36297 356 6 in in IN 36297 356 7 a a DT 36297 356 8 few few JJ 36297 356 9 minutes minute NNS 36297 356 10 will will MD 36297 356 11 walk walk VB 36297 356 12 straight straight RB 36297 356 13 to to IN 36297 356 14 an an DT 36297 356 15 object object NN 36297 356 16 and and CC 36297 356 17 seize seize VB 36297 356 18 it -PRON- PRP 36297 356 19 . . . 36297 357 1 Apparently apparently RB 36297 357 2 this this DT 36297 357 3 implies imply VBZ 36297 357 4 perception perception NN 36297 357 5 of of IN 36297 357 6 distance distance NN 36297 357 7 and and CC 36297 357 8 direction direction NN 36297 357 9 and and CC 36297 357 10 a a DT 36297 357 11 coördination coördination NN 36297 357 12 of of IN 36297 357 13 muscles muscle NNS 36297 357 14 for for IN 36297 357 15 walking walk VBG 36297 357 16 and and CC 36297 357 17 moving move VBG 36297 357 18 the the DT 36297 357 19 eyes eye NNS 36297 357 20 . . . 36297 358 1 It -PRON- PRP 36297 358 2 appears appear VBZ 36297 358 3 reasonable reasonable JJ 36297 358 4 to to TO 36297 358 5 conclude conclude VB 36297 358 6 that that IN 36297 358 7 a a DT 36297 358 8 certain certain JJ 36297 358 9 amount amount NN 36297 358 10 of of IN 36297 358 11 the the DT 36297 358 12 wealth wealth NN 36297 358 13 of of IN 36297 358 14 capacities capacity NNS 36297 358 15 possessed possess VBN 36297 358 16 by by IN 36297 358 17 the the DT 36297 358 18 individual individual NN 36297 358 19 is be VBZ 36297 358 20 partly partly RB 36297 358 21 inherited inherit VBN 36297 358 22 , , , 36297 358 23 and and CC 36297 358 24 in in IN 36297 358 25 man man NN 36297 358 26 the the DT 36297 358 27 acquired acquire VBN 36297 358 28 predominates predominate NNS 36297 358 29 . . . 36297 359 1 But but CC 36297 359 2 all all DT 36297 359 3 capacities capacity NNS 36297 359 4 are be VBP 36297 359 5 acquired acquire VBN 36297 359 6 , , , 36297 359 7 for for IN 36297 359 8 even even RB 36297 359 9 the the DT 36297 359 10 inherited inherit VBN 36297 359 11 was be VBD 36297 359 12 acquired acquire VBN 36297 359 13 in in IN 36297 359 14 ancestral ancestral JJ 36297 359 15 experience experience NN 36297 359 16 . . . 36297 360 1 Even even RB 36297 360 2 instinct instinct NN 36297 360 3 ( ( -LRB- 36297 360 4 whatever whatever WDT 36297 360 5 that that DT 36297 360 6 may may MD 36297 360 7 be be VB 36297 360 8 ) ) -RRB- 36297 360 9 must must MD 36297 360 10 involve involve VB 36297 360 11 inherited inherit VBN 36297 360 12 experience experience NN 36297 360 13 . . . 36297 361 1 These these DT 36297 361 2 glimpses glimpse NNS 36297 361 3 of of IN 36297 361 4 the the DT 36297 361 5 depths depth NNS 36297 361 6 to to TO 36297 361 7 which which WDT 36297 361 8 one one PRP 36297 361 9 must must MD 36297 361 10 dig dig VB 36297 361 11 if if IN 36297 361 12 he -PRON- PRP 36297 361 13 is be VBZ 36297 361 14 to to TO 36297 361 15 unearth unearth VB 36297 361 16 the the DT 36297 361 17 complete complete JJ 36297 361 18 explanations explanation NNS 36297 361 19 of of IN 36297 361 20 visual visual JJ 36297 361 21 perception perception NN 36297 361 22 -- -- : 36297 361 23 and and CC 36297 361 24 consequently consequently RB 36297 361 25 of of IN 36297 361 26 illusions illusion NNS 36297 361 27 -- -- : 36297 361 28 indicate indicate VBP 36297 361 29 the the DT 36297 361 30 futility futility NN 36297 361 31 of of IN 36297 361 32 treating treat VBG 36297 361 33 the the DT 36297 361 34 theories theory NNS 36297 361 35 in in IN 36297 361 36 the the DT 36297 361 37 available available JJ 36297 361 38 space space NN 36297 361 39 without without IN 36297 361 40 encroaching encroach VBG 36297 361 41 unduly unduly RB 36297 361 42 upon upon IN 36297 361 43 the the DT 36297 361 44 aims aim NNS 36297 361 45 of of IN 36297 361 46 this this DT 36297 361 47 volume volume NN 36297 361 48 . . . 36297 362 1 Certain certain JJ 36297 362 2 defects defect NNS 36297 362 3 of of IN 36297 362 4 the the DT 36297 362 5 optical optical JJ 36297 362 6 system system NN 36297 362 7 of of IN 36297 362 8 the the DT 36297 362 9 eye eye NN 36297 362 10 must must MD 36297 362 11 contribute contribute VB 36297 362 12 toward toward IN 36297 362 13 causing cause VBG 36297 362 14 illusions illusion NNS 36297 362 15 . . . 36297 363 1 Any any DT 36297 363 2 perfect perfect JJ 36297 363 3 lens lens NN 36297 363 4 of of IN 36297 363 5 homogeneous homogeneous JJ 36297 363 6 material material NN 36297 363 7 has have VBZ 36297 363 8 at at RB 36297 363 9 least least RBS 36297 363 10 two two CD 36297 363 11 defects defect NNS 36297 363 12 , , , 36297 363 13 known know VBN 36297 363 14 as as IN 36297 363 15 spherical spherical JJ 36297 363 16 and and CC 36297 363 17 chromatic chromatic JJ 36297 363 18 aberration aberration NN 36297 363 19 . . . 36297 364 1 The the DT 36297 364 2 former former JJ 36297 364 3 manifests manifest NNS 36297 364 4 itself -PRON- PRP 36297 364 5 by by IN 36297 364 6 the the DT 36297 364 7 bending bending NN 36297 364 8 of of IN 36297 364 9 straight straight JJ 36297 364 10 lines line NNS 36297 364 11 and and CC 36297 364 12 is be VBZ 36297 364 13 usually usually RB 36297 364 14 demonstrated demonstrate VBN 36297 364 15 by by IN 36297 364 16 forming form VBG 36297 364 17 an an DT 36297 364 18 image image NN 36297 364 19 of of IN 36297 364 20 an an DT 36297 364 21 object object NN 36297 364 22 such such JJ 36297 364 23 as as IN 36297 364 24 a a DT 36297 364 25 wire wire NN 36297 364 26 mesh mesh NN 36297 364 27 or or CC 36297 364 28 checkerboard checkerboard NN 36297 364 29 ; ; : 36297 364 30 the the DT 36297 364 31 outer outer JJ 36297 364 32 lines line NNS 36297 364 33 of of IN 36297 364 34 the the DT 36297 364 35 image image NN 36297 364 36 are be VBP 36297 364 37 found find VBN 36297 364 38 to to TO 36297 364 39 be be VB 36297 364 40 very very RB 36297 364 41 much much RB 36297 364 42 bent bent JJ 36297 364 43 . . . 36297 365 1 This this DT 36297 365 2 defect defect NN 36297 365 3 in in IN 36297 365 4 the the DT 36297 365 5 eye eye NN 36297 365 6 - - HYPH 36297 365 7 lens lens NN 36297 365 8 is be VBZ 36297 365 9 somewhat somewhat RB 36297 365 10 counteracted counteract VBN 36297 365 11 by by IN 36297 365 12 a a DT 36297 365 13 variable variable JJ 36297 365 14 optical optical JJ 36297 365 15 density density NN 36297 365 16 , , , 36297 365 17 increasing increase VBG 36297 365 18 from from IN 36297 365 19 the the DT 36297 365 20 outer outer NN 36297 365 21 to to IN 36297 365 22 the the DT 36297 365 23 central central JJ 36297 365 24 portion portion NN 36297 365 25 . . . 36297 366 1 This this DT 36297 366 2 results result VBZ 36297 366 3 in in IN 36297 366 4 an an DT 36297 366 5 increase increase NN 36297 366 6 in in IN 36297 366 7 refractive refractive JJ 36297 366 8 - - HYPH 36297 366 9 index index NN 36297 366 10 as as IN 36297 366 11 the the DT 36297 366 12 center center NN 36297 366 13 of of IN 36297 366 14 the the DT 36297 366 15 lens lens NN 36297 366 16 is be VBZ 36297 366 17 approached approach VBN 36297 366 18 and and CC 36297 366 19 tends tend VBZ 36297 366 20 to to TO 36297 366 21 diminish diminish VB 36297 366 22 its -PRON- PRP$ 36297 366 23 spherical spherical JJ 36297 366 24 aberration aberration NN 36297 366 25 . . . 36297 367 1 The the DT 36297 367 2 eye eye NN 36297 367 3 commonly commonly RB 36297 367 4 possesses possess VBZ 36297 367 5 abnormalities abnormality NNS 36297 367 6 such such JJ 36297 367 7 as as IN 36297 367 8 astigmatism astigmatism NN 36297 367 9 and and CC 36297 367 10 eccentricity eccentricity NN 36297 367 11 of of IN 36297 367 12 the the DT 36297 367 13 optical optical JJ 36297 367 14 elements element NNS 36297 367 15 . . . 36297 368 1 All all PDT 36297 368 2 these these DT 36297 368 3 contribute contribute VBP 36297 368 4 toward toward IN 36297 368 5 the the DT 36297 368 6 creation creation NN 36297 368 7 of of IN 36297 368 8 illusions illusion NNS 36297 368 9 . . . 36297 369 1 White white JJ 36297 369 2 light light NN 36297 369 3 consists consist VBZ 36297 369 4 of of IN 36297 369 5 rays ray NNS 36297 369 6 of of IN 36297 369 7 light light NN 36297 369 8 of of IN 36297 369 9 various various JJ 36297 369 10 colors color NNS 36297 369 11 and and CC 36297 369 12 these these DT 36297 369 13 are be VBP 36297 369 14 separated separate VBN 36297 369 15 by by IN 36297 369 16 means mean NNS 36297 369 17 of of IN 36297 369 18 a a DT 36297 369 19 prism prism NN 36297 369 20 because because IN 36297 369 21 the the DT 36297 369 22 refractive refractive JJ 36297 369 23 - - HYPH 36297 369 24 index index NN 36297 369 25 of of IN 36297 369 26 the the DT 36297 369 27 prism prism NN 36297 369 28 differs differ VBZ 36297 369 29 for for IN 36297 369 30 lights light NNS 36297 369 31 of of IN 36297 369 32 different different JJ 36297 369 33 color color NN 36297 369 34 or or CC 36297 369 35 wave wave NN 36297 369 36 - - HYPH 36297 369 37 length length NN 36297 369 38 . . . 36297 370 1 This this DT 36297 370 2 causes cause VBZ 36297 370 3 the the DT 36297 370 4 blue blue JJ 36297 370 5 rays ray NNS 36297 370 6 , , , 36297 370 7 for for IN 36297 370 8 example example NN 36297 370 9 , , , 36297 370 10 to to TO 36297 370 11 be be VB 36297 370 12 bent bend VBN 36297 370 13 more more JJR 36297 370 14 than than IN 36297 370 15 the the DT 36297 370 16 red red JJ 36297 370 17 rays ray NNS 36297 370 18 when when WRB 36297 370 19 traversing traverse VBG 36297 370 20 a a DT 36297 370 21 prism prism NN 36297 370 22 . . . 36297 371 1 It -PRON- PRP 36297 371 2 is be VBZ 36297 371 3 in in IN 36297 371 4 this this DT 36297 371 5 manner manner NN 36297 371 6 that that IN 36297 371 7 the the DT 36297 371 8 spectrum spectrum NN 36297 371 9 of of IN 36297 371 10 light light NN 36297 371 11 may may MD 36297 371 12 be be VB 36297 371 13 obtained obtain VBN 36297 371 14 . . . 36297 372 1 A a DT 36297 372 2 lens lens NN 36297 372 3 may may MD 36297 372 4 be be VB 36297 372 5 considered consider VBN 36297 372 6 to to TO 36297 372 7 be be VB 36297 372 8 a a DT 36297 372 9 prism prism NN 36297 372 10 of of IN 36297 372 11 revolution revolution NN 36297 372 12 and and CC 36297 372 13 it -PRON- PRP 36297 372 14 thus thus RB 36297 372 15 becomes become VBZ 36297 372 16 evident evident JJ 36297 372 17 that that IN 36297 372 18 the the DT 36297 372 19 blue blue JJ 36297 372 20 rays ray NNS 36297 372 21 will will MD 36297 372 22 be be VB 36297 372 23 brought bring VBN 36297 372 24 to to IN 36297 372 25 a a DT 36297 372 26 focus focus NN 36297 372 27 at at IN 36297 372 28 a a DT 36297 372 29 lesser less JJR 36297 372 30 distance distance NN 36297 372 31 than than IN 36297 372 32 the the DT 36297 372 33 red red JJ 36297 372 34 rays ray NNS 36297 372 35 ; ; : 36297 372 36 that that RB 36297 372 37 is is RB 36297 372 38 , , , 36297 372 39 the the DT 36297 372 40 former former JJ 36297 372 41 are be VBP 36297 372 42 bent bent JJ 36297 372 43 more more RBR 36297 372 44 from from IN 36297 372 45 their -PRON- PRP$ 36297 372 46 original original JJ 36297 372 47 path path NN 36297 372 48 than than IN 36297 372 49 the the DT 36297 372 50 latter latter JJ 36297 372 51 . . . 36297 373 1 This this DT 36297 373 2 defect defect NN 36297 373 3 of of IN 36297 373 4 lenses lense NNS 36297 373 5 is be VBZ 36297 373 6 known know VBN 36297 373 7 as as IN 36297 373 8 chromatic chromatic JJ 36297 373 9 aberration aberration NN 36297 373 10 and and CC 36297 373 11 is be VBZ 36297 373 12 quite quite RB 36297 373 13 obvious obvious JJ 36297 373 14 in in IN 36297 373 15 the the DT 36297 373 16 eye eye NN 36297 373 17 . . . 36297 374 1 It -PRON- PRP 36297 374 2 may may MD 36297 374 3 be be VB 36297 374 4 demonstrated demonstrate VBN 36297 374 5 by by IN 36297 374 6 any any DT 36297 374 7 simple simple JJ 36297 374 8 lens lens NN 36297 374 9 , , , 36297 374 10 for for IN 36297 374 11 the the DT 36297 374 12 image image NN 36297 374 13 of of IN 36297 374 14 the the DT 36297 374 15 sun sun NN 36297 374 16 , , , 36297 374 17 for for IN 36297 374 18 example example NN 36297 374 19 , , , 36297 374 20 will will MD 36297 374 21 appear appear VB 36297 374 22 to to TO 36297 374 23 have have VB 36297 374 24 a a DT 36297 374 25 colored colored JJ 36297 374 26 fringe fringe NN 36297 374 27 . . . 36297 375 1 A a DT 36297 375 2 purple purple JJ 36297 375 3 filter filter NN 36297 375 4 which which WDT 36297 375 5 transmits transmit VBZ 36297 375 6 only only RB 36297 375 7 the the DT 36297 375 8 violet violet NN 36297 375 9 and and CC 36297 375 10 red red JJ 36297 375 11 rays ray NNS 36297 375 12 is be VBZ 36297 375 13 useful useful JJ 36297 375 14 for for IN 36297 375 15 this this DT 36297 375 16 demonstration demonstration NN 36297 375 17 . . . 36297 376 1 By by IN 36297 376 2 looking look VBG 36297 376 3 at at IN 36297 376 4 a a DT 36297 376 5 lamp lamp NN 36297 376 6 - - HYPH 36297 376 7 filament filament NN 36297 376 8 or or CC 36297 376 9 candle candle NN 36297 376 10 - - HYPH 36297 376 11 flame flame NN 36297 376 12 some some DT 36297 376 13 distance distance NN 36297 376 14 away away RB 36297 376 15 the the DT 36297 376 16 object object NN 36297 376 17 will will MD 36297 376 18 appear appear VB 36297 376 19 to to TO 36297 376 20 have have VB 36297 376 21 a a DT 36297 376 22 violet violet NN 36297 376 23 halo halo NN 36297 376 24 , , , 36297 376 25 but but CC 36297 376 26 the the DT 36297 376 27 color color NN 36297 376 28 of of IN 36297 376 29 the the DT 36297 376 30 fringe fringe NN 36297 376 31 will will MD 36297 376 32 vary vary VB 36297 376 33 with with IN 36297 376 34 accommodation accommodation NN 36297 376 35 . . . 36297 377 1 On on IN 36297 377 2 looking look VBG 36297 377 3 through through IN 36297 377 4 a a DT 36297 377 5 pin pin NN 36297 377 6 - - HYPH 36297 377 7 hole hole NN 36297 377 8 at at IN 36297 377 9 the the DT 36297 377 10 edge edge NN 36297 377 11 of of IN 36297 377 12 an an DT 36297 377 13 object object NN 36297 377 14 silhouetted silhouette VBN 36297 377 15 against against IN 36297 377 16 the the DT 36297 377 17 bright bright JJ 36297 377 18 sky sky NN 36297 377 19 the the DT 36297 377 20 edge edge NN 36297 377 21 will will MD 36297 377 22 appear appear VB 36297 377 23 red red JJ 36297 377 24 if if IN 36297 377 25 the the DT 36297 377 26 light light NN 36297 377 27 from from IN 36297 377 28 the the DT 36297 377 29 pin pin NN 36297 377 30 - - HYPH 36297 377 31 hole hole NN 36297 377 32 enters enter VBZ 36297 377 33 the the DT 36297 377 34 pupil pupil NN 36297 377 35 near near IN 36297 377 36 its -PRON- PRP$ 36297 377 37 periphery periphery NN 36297 377 38 . . . 36297 378 1 This this DT 36297 378 2 optical optical JJ 36297 378 3 defect defect NN 36297 378 4 of of IN 36297 378 5 the the DT 36297 378 6 eye eye NN 36297 378 7 makes make VBZ 36297 378 8 objects object NNS 36297 378 9 appear appear VB 36297 378 10 more more RBR 36297 378 11 sharply sharply RB 36297 378 12 defined define VBN 36297 378 13 when when WRB 36297 378 14 viewed view VBN 36297 378 15 in in IN 36297 378 16 monochromatic monochromatic JJ 36297 378 17 light light NN 36297 378 18 . . . 36297 379 1 In in IN 36297 379 2 fact fact NN 36297 379 3 , , , 36297 379 4 this this DT 36297 379 5 is be VBZ 36297 379 6 quite quite RB 36297 379 7 obvious obvious JJ 36297 379 8 when when WRB 36297 379 9 using use VBG 36297 379 10 yellow yellow JJ 36297 379 11 glasses glass NNS 36297 379 12 . . . 36297 380 1 The the DT 36297 380 2 defect defect NN 36297 380 3 is be VBZ 36297 380 4 also also RB 36297 380 5 demonstrated demonstrate VBN 36297 380 6 by by IN 36297 380 7 viewing view VBG 36297 380 8 a a DT 36297 380 9 line line NN 36297 380 10 - - HYPH 36297 380 11 spectrum spectrum NN 36297 380 12 focused focus VBD 36297 380 13 on on IN 36297 380 14 a a DT 36297 380 15 ground ground NN 36297 380 16 glass glass NN 36297 380 17 . . . 36297 381 1 The the DT 36297 381 2 blue blue JJ 36297 381 3 and and CC 36297 381 4 red red JJ 36297 381 5 lines line NNS 36297 381 6 can can MD 36297 381 7 not not RB 36297 381 8 be be VB 36297 381 9 seen see VBN 36297 381 10 distinctly distinctly RB 36297 381 11 at at IN 36297 381 12 the the DT 36297 381 13 same same JJ 36297 381 14 distance distance NN 36297 381 15 . . . 36297 382 1 The the DT 36297 382 2 blue blue JJ 36297 382 3 lines line NNS 36297 382 4 can can MD 36297 382 5 be be VB 36297 382 6 focused focus VBN 36297 382 7 at at IN 36297 382 8 a a DT 36297 382 9 much much RB 36297 382 10 less less JJR 36297 382 11 distance distance NN 36297 382 12 than than IN 36297 382 13 the the DT 36297 382 14 red red JJ 36297 382 15 lines line NNS 36297 382 16 . . . 36297 383 1 Chromatic chromatic JJ 36297 383 2 aberration aberration NN 36297 383 3 can can MD 36297 383 4 account account VB 36297 383 5 for for IN 36297 383 6 such such PDT 36297 383 7 an an DT 36297 383 8 illusion illusion NN 36297 383 9 as as IN 36297 383 10 the the DT 36297 383 11 familiar familiar JJ 36297 383 12 " " `` 36297 383 13 advancing advance VBG 36297 383 14 " " '' 36297 383 15 and and CC 36297 383 16 " " `` 36297 383 17 retiring retire VBG 36297 383 18 " " '' 36297 383 19 colors color NNS 36297 383 20 and and CC 36297 383 21 doubtless doubtless RB 36297 383 22 it -PRON- PRP 36297 383 23 plays play VBZ 36297 383 24 a a DT 36297 383 25 part part NN 36297 383 26 in in IN 36297 383 27 many many JJ 36297 383 28 illusions illusion NNS 36297 383 29 . . . 36297 384 1 The the DT 36297 384 2 structure structure NN 36297 384 3 of of IN 36297 384 4 the the DT 36297 384 5 retina retina NNP 36297 384 6 plays play VBZ 36297 384 7 a a DT 36297 384 8 very very RB 36297 384 9 important important JJ 36297 384 10 part part NN 36297 384 11 in in IN 36297 384 12 vision vision NN 36297 384 13 and and CC 36297 384 14 accounts account NNS 36297 384 15 for for IN 36297 384 16 various various JJ 36297 384 17 illusions illusion NNS 36297 384 18 and and CC 36297 384 19 many many JJ 36297 384 20 interesting interesting JJ 36297 384 21 visual visual JJ 36297 384 22 phenomena phenomenon NNS 36297 384 23 . . . 36297 385 1 The the DT 36297 385 2 optic optic JJ 36297 385 3 nerve nerve NN 36297 385 4 spreads spread VBZ 36297 385 5 out out RP 36297 385 6 to to TO 36297 385 7 form form VB 36297 385 8 the the DT 36297 385 9 retina retina NNP 36297 385 10 which which WDT 36297 385 11 constitutes constitute VBZ 36297 385 12 the the DT 36297 385 13 inner inner JJ 36297 385 14 portion portion NN 36297 385 15 of of IN 36297 385 16 the the DT 36297 385 17 spherical spherical JJ 36297 385 18 shell shell NN 36297 385 19 of of IN 36297 385 20 the the DT 36297 385 21 eye eye NN 36297 385 22 with with IN 36297 385 23 the the DT 36297 385 24 exception exception NN 36297 385 25 of of IN 36297 385 26 the the DT 36297 385 27 front front JJ 36297 385 28 part part NN 36297 385 29 . . . 36297 386 1 Referring refer VBG 36297 386 2 again again RB 36297 386 3 to to IN 36297 386 4 Fig Fig NNP 36297 386 5 . . . 36297 387 1 1 1 CD 36297 387 2 , , , 36297 387 3 the the DT 36297 387 4 outer outer JJ 36297 387 5 coating coating NN 36297 387 6 of of IN 36297 387 7 the the DT 36297 387 8 shell shell NN 36297 387 9 is be VBZ 36297 387 10 called call VBN 36297 387 11 the the DT 36297 387 12 sclerotic sclerotic NN 36297 387 13 . . . 36297 388 1 This this DT 36297 388 2 consists consist VBZ 36297 388 3 of of IN 36297 388 4 dense dense JJ 36297 388 5 fibrous fibrous JJ 36297 388 6 tissue tissue NN 36297 388 7 known know VBN 36297 388 8 as as IN 36297 388 9 the the DT 36297 388 10 " " `` 36297 388 11 white white JJ 36297 388 12 of of IN 36297 388 13 the the DT 36297 388 14 eye eye NN 36297 388 15 . . . 36297 388 16 " " '' 36297 389 1 Inside inside IN 36297 389 2 this this DT 36297 389 3 coating coating NN 36297 389 4 is be VBZ 36297 389 5 a a DT 36297 389 6 layer layer NN 36297 389 7 of of IN 36297 389 8 black black JJ 36297 389 9 pigment pigment NN 36297 389 10 cells cell NNS 36297 389 11 termed term VBD 36297 389 12 the the DT 36297 389 13 choroid choroid NN 36297 389 14 . . . 36297 390 1 Next next JJ 36297 390 2 is be VBZ 36297 390 3 the the DT 36297 390 4 bacillary bacillary JJ 36297 390 5 layer layer NN 36297 390 6 which which WDT 36297 390 7 lines line VBZ 36297 390 8 about about RB 36297 390 9 five five CD 36297 390 10 - - HYPH 36297 390 11 sixths sixth NNS 36297 390 12 of of IN 36297 390 13 the the DT 36297 390 14 interior interior JJ 36297 390 15 surface surface NN 36297 390 16 of of IN 36297 390 17 the the DT 36297 390 18 eye eye NN 36297 390 19 . . . 36297 391 1 This this DT 36297 391 2 is be VBZ 36297 391 3 formed form VBN 36297 391 4 by by IN 36297 391 5 closely closely RB 36297 391 6 packed packed JJ 36297 391 7 " " '' 36297 391 8 rods rod NNS 36297 391 9 " " '' 36297 391 10 and and CC 36297 391 11 " " `` 36297 391 12 cones cone NNS 36297 391 13 , , , 36297 391 14 " " '' 36297 391 15 which which WDT 36297 391 16 play play VBP 36297 391 17 a a DT 36297 391 18 dominant dominant JJ 36297 391 19 role role NN 36297 391 20 in in IN 36297 391 21 the the DT 36297 391 22 visual visual JJ 36297 391 23 process process NN 36297 391 24 . . . 36297 392 1 A a DT 36297 392 2 light light JJ 36297 392 3 - - HYPH 36297 392 4 sensitive sensitive JJ 36297 392 5 liquid liquid NN 36297 392 6 ( ( -LRB- 36297 392 7 visual visual JJ 36297 392 8 purple purple NN 36297 392 9 ) ) -RRB- 36297 392 10 and and CC 36297 392 11 cellular cellular JJ 36297 392 12 and and CC 36297 392 13 fibrous fibrous JJ 36297 392 14 layers layer NNS 36297 392 15 complete complete VBP 36297 392 16 the the DT 36297 392 17 retinal retinal JJ 36297 392 18 structure structure NN 36297 392 19 . . . 36297 393 1 The the DT 36297 393 2 place place NN 36297 393 3 where where WRB 36297 393 4 the the DT 36297 393 5 optic optic JJ 36297 393 6 nerve nerve NN 36297 393 7 enters enter VBZ 36297 393 8 the the DT 36297 393 9 eye eye NN 36297 393 10 - - HYPH 36297 393 11 ball ball NN 36297 393 12 and and CC 36297 393 13 begins begin VBZ 36297 393 14 to to TO 36297 393 15 spread spread VB 36297 393 16 out out RP 36297 393 17 is be VBZ 36297 393 18 blind blind JJ 36297 393 19 . . . 36297 394 1 Objects object NNS 36297 394 2 whose whose WP$ 36297 394 3 images image NNS 36297 394 4 fall fall VBP 36297 394 5 on on IN 36297 394 6 this this DT 36297 394 7 spot spot NN 36297 394 8 are be VBP 36297 394 9 invisible invisible JJ 36297 394 10 . . . 36297 395 1 This this DT 36297 395 2 blind blind JJ 36297 395 3 - - HYPH 36297 395 4 spot spot NN 36297 395 5 is be VBZ 36297 395 6 not not RB 36297 395 7 particularly particularly RB 36297 395 8 of of IN 36297 395 9 interest interest NN 36297 395 10 here here RB 36297 395 11 , , , 36297 395 12 but but CC 36297 395 13 it -PRON- PRP 36297 395 14 may may MD 36297 395 15 be be VB 36297 395 16 of of IN 36297 395 17 interest interest NN 36297 395 18 to to TO 36297 395 19 note note VB 36297 395 20 its -PRON- PRP$ 36297 395 21 effect effect NN 36297 395 22 . . . 36297 396 1 This this DT 36297 396 2 is be VBZ 36297 396 3 easily easily RB 36297 396 4 done do VBN 36297 396 5 by by IN 36297 396 6 closing close VBG 36297 396 7 one one CD 36297 396 8 eye eye NN 36297 396 9 and and CC 36297 396 10 looking look VBG 36297 396 11 directly directly RB 36297 396 12 at at IN 36297 396 13 one one CD 36297 396 14 of of IN 36297 396 15 two two CD 36297 396 16 small small JJ 36297 396 17 black black JJ 36297 396 18 circles circle NNS 36297 396 19 about about IN 36297 396 20 two two CD 36297 396 21 inches inch NNS 36297 396 22 apart apart RB 36297 396 23 on on IN 36297 396 24 white white JJ 36297 396 25 paper paper NN 36297 396 26 at at IN 36297 396 27 a a DT 36297 396 28 distance distance NN 36297 396 29 of of IN 36297 396 30 about about RB 36297 396 31 a a DT 36297 396 32 foot foot NN 36297 396 33 from from IN 36297 396 34 the the DT 36297 396 35 eye eye NN 36297 396 36 . . . 36297 397 1 By by IN 36297 397 2 moving move VBG 36297 397 3 the the DT 36297 397 4 objects object NNS 36297 397 5 about about IN 36297 397 6 until until IN 36297 397 7 the the DT 36297 397 8 image image NN 36297 397 9 of of IN 36297 397 10 the the DT 36297 397 11 circle circle NN 36297 397 12 not not RB 36297 397 13 directly directly RB 36297 397 14 looked look VBN 36297 397 15 at at IN 36297 397 16 falls fall NNS 36297 397 17 upon upon IN 36297 397 18 the the DT 36297 397 19 blind blind JJ 36297 397 20 - - HYPH 36297 397 21 spot spot NN 36297 397 22 , , , 36297 397 23 this this DT 36297 397 24 circle circle NN 36297 397 25 will will MD 36297 397 26 disappear disappear VB 36297 397 27 . . . 36297 398 1 A a DT 36297 398 2 three three CD 36297 398 3 - - HYPH 36297 398 4 foot foot NN 36297 398 5 circle circle NN 36297 398 6 at at IN 36297 398 7 a a DT 36297 398 8 distance distance NN 36297 398 9 of of IN 36297 398 10 36 36 CD 36297 398 11 feet foot NNS 36297 398 12 will will MD 36297 398 13 completely completely RB 36297 398 14 disappear disappear VB 36297 398 15 if if IN 36297 398 16 its -PRON- PRP$ 36297 398 17 image image NN 36297 398 18 falls fall VBZ 36297 398 19 directly directly RB 36297 398 20 upon upon IN 36297 398 21 the the DT 36297 398 22 blind blind JJ 36297 398 23 - - HYPH 36297 398 24 spot spot NN 36297 398 25 . . . 36297 399 1 At at IN 36297 399 2 a a DT 36297 399 3 distance distance NN 36297 399 4 of of IN 36297 399 5 42 42 CD 36297 399 6 inches inch NNS 36297 399 7 the the DT 36297 399 8 invisible invisible JJ 36297 399 9 area area NN 36297 399 10 is be VBZ 36297 399 11 about about RB 36297 399 12 12 12 CD 36297 399 13 inches inch NNS 36297 399 14 from from IN 36297 399 15 the the DT 36297 399 16 point point NN 36297 399 17 of of IN 36297 399 18 sight sight NN 36297 399 19 and and CC 36297 399 20 about about RB 36297 399 21 3 3 CD 36297 399 22 to to TO 36297 399 23 4 4 CD 36297 399 24 inches inch NNS 36297 399 25 in in IN 36297 399 26 diameter diameter NN 36297 399 27 . . . 36297 400 1 At at IN 36297 400 2 300 300 CD 36297 400 3 feet foot NNS 36297 400 4 the the DT 36297 400 5 area area NN 36297 400 6 is be VBZ 36297 400 7 about about RB 36297 400 8 8 8 CD 36297 400 9 feet foot NNS 36297 400 10 in in IN 36297 400 11 diameter diameter NN 36297 400 12 . . . 36297 401 1 The the DT 36297 401 2 actual actual JJ 36297 401 3 size size NN 36297 401 4 of of IN 36297 401 5 the the DT 36297 401 6 retinal retinal JJ 36297 401 7 blind blind JJ 36297 401 8 - - HYPH 36297 401 9 spot spot NN 36297 401 10 is be VBZ 36297 401 11 about about RB 36297 401 12 0.05 0.05 CD 36297 401 13 inch inch NN 36297 401 14 in in IN 36297 401 15 diameter diameter NN 36297 401 16 or or CC 36297 401 17 nearly nearly RB 36297 401 18 5 5 CD 36297 401 19 degrees degree NNS 36297 401 20 . . . 36297 402 1 Binocular binocular JJ 36297 402 2 vision vision NN 36297 402 3 overcomes overcome VBZ 36297 402 4 any any DT 36297 402 5 annoyance annoyance NN 36297 402 6 due due IN 36297 402 7 to to IN 36297 402 8 the the DT 36297 402 9 blind blind JJ 36297 402 10 - - HYPH 36297 402 11 spots spot NNS 36297 402 12 because because IN 36297 402 13 they -PRON- PRP 36297 402 14 do do VBP 36297 402 15 not not RB 36297 402 16 overlap overlap VB 36297 402 17 in in IN 36297 402 18 the the DT 36297 402 19 visual visual JJ 36297 402 20 field field NN 36297 402 21 . . . 36297 403 1 A a DT 36297 403 2 one one CD 36297 403 3 - - HYPH 36297 403 4 eyed eyed JJ 36297 403 5 person person NN 36297 403 6 is be VBZ 36297 403 7 really really RB 36297 403 8 totally totally RB 36297 403 9 blind blind JJ 36297 403 10 for for IN 36297 403 11 this this DT 36297 403 12 portion portion NN 36297 403 13 of of IN 36297 403 14 the the DT 36297 403 15 retina retina NNP 36297 403 16 or or CC 36297 403 17 of of IN 36297 403 18 the the DT 36297 403 19 visual visual JJ 36297 403 20 field field NN 36297 403 21 . . . 36297 404 1 The the DT 36297 404 2 bacillary bacillary JJ 36297 404 3 layer layer NN 36297 404 4 consists consist VBZ 36297 404 5 of of IN 36297 404 6 so so RB 36297 404 7 - - HYPH 36297 404 8 called call VBN 36297 404 9 rods rod NNS 36297 404 10 and and CC 36297 404 11 cones cone NNS 36297 404 12 . . . 36297 405 1 Only only RB 36297 405 2 the the DT 36297 405 3 rods rod NNS 36297 405 4 function function VBP 36297 405 5 under under IN 36297 405 6 very very RB 36297 405 7 low low JJ 36297 405 8 intensities intensity NNS 36297 405 9 of of IN 36297 405 10 illumination illumination NN 36297 405 11 of of IN 36297 405 12 the the DT 36297 405 13 order order NN 36297 405 14 of of IN 36297 405 15 moonlight moonlight NN 36297 405 16 . . . 36297 406 1 The the DT 36297 406 2 cones cone NNS 36297 406 3 are be VBP 36297 406 4 sensitive sensitive JJ 36297 406 5 to to IN 36297 406 6 color color NN 36297 406 7 and and CC 36297 406 8 function function VB 36297 406 9 only only RB 36297 406 10 at at IN 36297 406 11 intensities intensity NNS 36297 406 12 greater great JJR 36297 406 13 than than IN 36297 406 14 what what WP 36297 406 15 may may MD 36297 406 16 be be VB 36297 406 17 termed term VBN 36297 406 18 twilight twilight JJ 36297 406 19 intensities intensity NNS 36297 406 20 . . . 36297 407 1 These these DT 36297 407 2 elements element NNS 36297 407 3 are be VBP 36297 407 4 very very RB 36297 407 5 small small JJ 36297 407 6 but but CC 36297 407 7 the the DT 36297 407 8 fact fact NN 36297 407 9 that that IN 36297 407 10 they -PRON- PRP 36297 407 11 appear appear VBP 36297 407 12 to to TO 36297 407 13 be be VB 36297 407 14 connecting connect VBG 36297 407 15 links link NNS 36297 407 16 between between IN 36297 407 17 the the DT 36297 407 18 retinal retinal JJ 36297 407 19 image image NN 36297 407 20 and and CC 36297 407 21 visual visual JJ 36297 407 22 perception perception NN 36297 407 23 , , , 36297 407 24 acuity acuity NN 36297 407 25 or or CC 36297 407 26 discrimination discrimination NN 36297 407 27 of of IN 36297 407 28 fine fine JJ 36297 407 29 detail detail NN 36297 407 30 is be VBZ 36297 407 31 limited limited JJ 36297 407 32 inasmuch inasmuch NN 36297 407 33 as as IN 36297 407 34 the the DT 36297 407 35 elements element NNS 36297 407 36 are be VBP 36297 407 37 of of IN 36297 407 38 finite finite JJ 36297 407 39 dimensions dimension NNS 36297 407 40 . . . 36297 408 1 The the DT 36297 408 2 smallest small JJS 36297 408 3 image image NN 36297 408 4 which which WDT 36297 408 5 will will MD 36297 408 6 produce produce VB 36297 408 7 a a DT 36297 408 8 visual visual JJ 36297 408 9 impression impression NN 36297 408 10 is be VBZ 36297 408 11 the the DT 36297 408 12 size size NN 36297 408 13 of of IN 36297 408 14 the the DT 36297 408 15 end end NN 36297 408 16 of of IN 36297 408 17 a a DT 36297 408 18 cone cone NN 36297 408 19 . . . 36297 409 1 The the DT 36297 409 2 smallest small JJS 36297 409 3 distance distance NN 36297 409 4 between between IN 36297 409 5 two two CD 36297 409 6 points point NNS 36297 409 7 which which WDT 36297 409 8 is be VBZ 36297 409 9 visible visible JJ 36297 409 10 at at IN 36297 409 11 five five CD 36297 409 12 inches inch NNS 36297 409 13 is be VBZ 36297 409 14 about about RB 36297 409 15 0.001 0.001 CD 36297 409 16 inch inch NN 36297 409 17 . . . 36297 410 1 Two two CD 36297 410 2 cones cone NNS 36297 410 3 must must MD 36297 410 4 be be VB 36297 410 5 stimulated stimulate VBN 36297 410 6 in in IN 36297 410 7 such such PDT 36297 410 8 a a DT 36297 410 9 case case NN 36297 410 10 . . . 36297 411 1 Fine fine JJ 36297 411 2 lines line NNS 36297 411 3 may may MD 36297 411 4 appear appear VB 36297 411 5 crooked crooked JJ 36297 411 6 because because IN 36297 411 7 of of IN 36297 411 8 the the DT 36297 411 9 irregular irregular JJ 36297 411 10 disposition disposition NN 36297 411 11 of of IN 36297 411 12 these these DT 36297 411 13 elemental elemental JJ 36297 411 14 light light JJ 36297 411 15 - - HYPH 36297 411 16 sensitive sensitive JJ 36297 411 17 points point NNS 36297 411 18 . . . 36297 412 1 This this DT 36297 412 2 apparent apparent JJ 36297 412 3 crookedness crookedness NN 36297 412 4 of of IN 36297 412 5 lines line NNS 36297 412 6 is be VBZ 36297 412 7 an an DT 36297 412 8 illusion illusion NN 36297 412 9 which which WDT 36297 412 10 is be VBZ 36297 412 11 directly directly RB 36297 412 12 due due JJ 36297 412 13 to to IN 36297 412 14 the the DT 36297 412 15 limitations limitation NNS 36297 412 16 of of IN 36297 412 17 retinal retinal JJ 36297 412 18 elements element NNS 36297 412 19 of of IN 36297 412 20 finite finite JJ 36297 412 21 size size NN 36297 412 22 . . . 36297 413 1 The the DT 36297 413 2 distribution distribution NN 36297 413 3 of of IN 36297 413 4 rods rod NNS 36297 413 5 and and CC 36297 413 6 cones cone NNS 36297 413 7 over over IN 36297 413 8 the the DT 36297 413 9 retina retina NNP 36297 413 10 is be VBZ 36297 413 11 very very RB 36297 413 12 important important JJ 36297 413 13 . . . 36297 414 1 In in IN 36297 414 2 the the DT 36297 414 3 fovea fovea NN 36297 414 4 centralis centralis NN 36297 414 5 -- -- : 36297 414 6 the the DT 36297 414 7 point point NN 36297 414 8 of of IN 36297 414 9 the the DT 36297 414 10 retina retina NNP 36297 414 11 on on IN 36297 414 12 the the DT 36297 414 13 optical optical JJ 36297 414 14 axis axis NN 36297 414 15 of of IN 36297 414 16 the the DT 36297 414 17 eye eye NN 36297 414 18 -- -- : 36297 414 19 is be VBZ 36297 414 20 a a DT 36297 414 21 slight slight JJ 36297 414 22 depression depression NN 36297 414 23 much much RB 36297 414 24 thinner thin JJR 36297 414 25 than than IN 36297 414 26 the the DT 36297 414 27 remainder remainder NN 36297 414 28 of of IN 36297 414 29 the the DT 36297 414 30 retina retina NNP 36297 414 31 and and CC 36297 414 32 this this DT 36297 414 33 is be VBZ 36297 414 34 inhabited inhabit VBN 36297 414 35 chiefly chiefly RB 36297 414 36 by by IN 36297 414 37 cones cone NNS 36297 414 38 . . . 36297 415 1 It -PRON- PRP 36297 415 2 is be VBZ 36297 415 3 this this DT 36297 415 4 spot spot NN 36297 415 5 which which WDT 36297 415 6 provides provide VBZ 36297 415 7 visual visual JJ 36297 415 8 acuteness acuteness NN 36297 415 9 . . . 36297 416 1 It -PRON- PRP 36297 416 2 is be VBZ 36297 416 3 easily easily RB 36297 416 4 demonstrated demonstrate VBN 36297 416 5 that that IN 36297 416 6 fine fine JJ 36297 416 7 detail detail NN 36297 416 8 can can MD 36297 416 9 not not RB 36297 416 10 be be VB 36297 416 11 seen see VBN 36297 416 12 well well RB 36297 416 13 defined define VBN 36297 416 14 outside outside IN 36297 416 15 this this DT 36297 416 16 central central JJ 36297 416 17 portion portion NN 36297 416 18 of of IN 36297 416 19 the the DT 36297 416 20 visual visual JJ 36297 416 21 field field NN 36297 416 22 . . . 36297 417 1 When when WRB 36297 417 2 we -PRON- PRP 36297 417 3 desire desire VBP 36297 417 4 to to TO 36297 417 5 see see VB 36297 417 6 an an DT 36297 417 7 object object NN 36297 417 8 distinctly distinctly RB 36297 417 9 we -PRON- PRP 36297 417 10 habitually habitually RB 36297 417 11 turn turn VBP 36297 417 12 the the DT 36297 417 13 head head NN 36297 417 14 so so IN 36297 417 15 that that IN 36297 417 16 the the DT 36297 417 17 image image NN 36297 417 18 of of IN 36297 417 19 the the DT 36297 417 20 object object NN 36297 417 21 falls fall VBZ 36297 417 22 upon upon IN 36297 417 23 the the DT 36297 417 24 fovea fovea NN 36297 417 25 of of IN 36297 417 26 each each DT 36297 417 27 eye eye NN 36297 417 28 . . . 36297 418 1 Helmholtz Helmholtz NNP 36297 418 2 has have VBZ 36297 418 3 compared compare VBN 36297 418 4 the the DT 36297 418 5 foveal foveal NN 36297 418 6 and and CC 36297 418 7 lateral lateral JJ 36297 418 8 images image NNS 36297 418 9 with with IN 36297 418 10 a a DT 36297 418 11 finished finished JJ 36297 418 12 drawing drawing NN 36297 418 13 and and CC 36297 418 14 a a DT 36297 418 15 rough rough JJ 36297 418 16 sketch sketch NN 36297 418 17 respectively respectively RB 36297 418 18 . . . 36297 419 1 The the DT 36297 419 2 fovea fovea NN 36297 419 3 also also RB 36297 419 4 contains contain VBZ 36297 419 5 a a DT 36297 419 6 yellow yellow JJ 36297 419 7 pigmentation pigmentation NN 36297 419 8 which which WDT 36297 419 9 makes make VBZ 36297 419 10 this this DT 36297 419 11 area area NN 36297 419 12 of of IN 36297 419 13 the the DT 36297 419 14 retina retina NNP 36297 419 15 selective selective NN 36297 419 16 as as IN 36297 419 17 to to IN 36297 419 18 color color NN 36297 419 19 - - HYPH 36297 419 20 vision vision NN 36297 419 21 . . . 36297 420 1 On on IN 36297 420 2 viewing view VBG 36297 420 3 certain certain JJ 36297 420 4 colors color NNS 36297 420 5 a a DT 36297 420 6 difference difference NN 36297 420 7 in in IN 36297 420 8 color color NN 36297 420 9 of of IN 36297 420 10 this this DT 36297 420 11 central central JJ 36297 420 12 portion portion NN 36297 420 13 of of IN 36297 420 14 the the DT 36297 420 15 field field NN 36297 420 16 is be VBZ 36297 420 17 often often RB 36297 420 18 very very RB 36297 420 19 evident evident JJ 36297 420 20 . . . 36297 421 1 In in IN 36297 421 2 the the DT 36297 421 3 outlying outlying JJ 36297 421 4 regions region NNS 36297 421 5 of of IN 36297 421 6 the the DT 36297 421 7 retina retina NNP 36297 421 8 , , , 36297 421 9 rods rod NNS 36297 421 10 predominate predominate VBP 36297 421 11 and and CC 36297 421 12 in in IN 36297 421 13 the the DT 36297 421 14 intermediate intermediate JJ 36297 421 15 zone zone NN 36297 421 16 both both DT 36297 421 17 rods rod NNS 36297 421 18 and and CC 36297 421 19 cones cone NNS 36297 421 20 are be VBP 36297 421 21 found find VBN 36297 421 22 . . . 36297 422 1 Inasmuch inasmuch JJ 36297 422 2 as as IN 36297 422 3 rods rod NNS 36297 422 4 are be VBP 36297 422 5 not not RB 36297 422 6 sensitive sensitive JJ 36297 422 7 to to IN 36297 422 8 color color NN 36297 422 9 and and CC 36297 422 10 cones cone NNS 36297 422 11 do do VBP 36297 422 12 not not RB 36297 422 13 function function VB 36297 422 14 at at IN 36297 422 15 low low JJ 36297 422 16 intensities intensity NNS 36297 422 17 of of IN 36297 422 18 illumination illumination NN 36297 422 19 it -PRON- PRP 36297 422 20 is be VBZ 36297 422 21 obvious obvious JJ 36297 422 22 that that IN 36297 422 23 visual visual JJ 36297 422 24 impressions impression NNS 36297 422 25 should should MD 36297 422 26 vary vary VB 36297 422 27 , , , 36297 422 28 depending depend VBG 36297 422 29 upon upon IN 36297 422 30 the the DT 36297 422 31 area area NN 36297 422 32 of of IN 36297 422 33 the the DT 36297 422 34 retina retina NNP 36297 422 35 stimulated stimulate VBD 36297 422 36 . . . 36297 423 1 In in IN 36297 423 2 fact fact NN 36297 423 3 , , , 36297 423 4 many many JJ 36297 423 5 interesting interesting JJ 36297 423 6 illusions illusion NNS 36297 423 7 are be VBP 36297 423 8 accounted account VBN 36297 423 9 for for IN 36297 423 10 in in IN 36297 423 11 this this DT 36297 423 12 manner manner NN 36297 423 13 , , , 36297 423 14 some some DT 36297 423 15 of of IN 36297 423 16 which which WDT 36297 423 17 are be VBP 36297 423 18 discussed discuss VBN 36297 423 19 later later RB 36297 423 20 . . . 36297 424 1 It -PRON- PRP 36297 424 2 is be VBZ 36297 424 3 well well RB 36297 424 4 known know VBN 36297 424 5 that that IN 36297 424 6 a a DT 36297 424 7 faint faint JJ 36297 424 8 star star NN 36297 424 9 is be VBZ 36297 424 10 seen see VBN 36297 424 11 best well RBS 36297 424 12 by by IN 36297 424 13 averted averted JJ 36297 424 14 vision vision NN 36297 424 15 . . . 36297 425 1 It -PRON- PRP 36297 425 2 may may MD 36297 425 3 be be VB 36297 425 4 quite quite RB 36297 425 5 invisible invisible JJ 36297 425 6 when when WRB 36297 425 7 the the DT 36297 425 8 eye eye NN 36297 425 9 is be VBZ 36297 425 10 directed direct VBN 36297 425 11 toward toward IN 36297 425 12 it -PRON- PRP 36297 425 13 , , , 36297 425 14 that that RB 36297 425 15 is is RB 36297 425 16 , , , 36297 425 17 when when WRB 36297 425 18 its -PRON- PRP$ 36297 425 19 image image NN 36297 425 20 falls fall VBZ 36297 425 21 upon upon IN 36297 425 22 the the DT 36297 425 23 rod rod NN 36297 425 24 - - HYPH 36297 425 25 free free JJ 36297 425 26 fovea fovea NN 36297 425 27 . . . 36297 426 1 However however RB 36297 426 2 , , , 36297 426 3 by by IN 36297 426 4 averting avert VBG 36297 426 5 the the DT 36297 426 6 line line NN 36297 426 7 of of IN 36297 426 8 sight sight NN 36297 426 9 slightly slightly RB 36297 426 10 , , , 36297 426 11 the the DT 36297 426 12 image image NN 36297 426 13 is be VBZ 36297 426 14 caused cause VBN 36297 426 15 to to TO 36297 426 16 fall fall VB 36297 426 17 on on IN 36297 426 18 a a DT 36297 426 19 retinal retinal JJ 36297 426 20 area area NN 36297 426 21 containing contain VBG 36297 426 22 rods rod NNS 36297 426 23 ( ( -LRB- 36297 426 24 sensitive sensitive JJ 36297 426 25 to to TO 36297 426 26 feeble feeble VB 36297 426 27 light light NN 36297 426 28 ) ) -RRB- 36297 426 29 and and CC 36297 426 30 the the DT 36297 426 31 star star NN 36297 426 32 may may MD 36297 426 33 be be VB 36297 426 34 readily readily RB 36297 426 35 recognized recognize VBN 36297 426 36 . . . 36297 427 1 The the DT 36297 427 2 fovea fovea NN 36297 427 3 is be VBZ 36297 427 4 the the DT 36297 427 5 point point NN 36297 427 6 of of IN 36297 427 7 distinct distinct JJ 36297 427 8 focus focus NN 36297 427 9 . . . 36297 428 1 It -PRON- PRP 36297 428 2 is be VBZ 36297 428 3 necessary necessary JJ 36297 428 4 for for IN 36297 428 5 fixed fix VBN 36297 428 6 thoughtful thoughtful JJ 36297 428 7 attention attention NN 36297 428 8 . . . 36297 429 1 It -PRON- PRP 36297 429 2 exists exist VBZ 36297 429 3 in in IN 36297 429 4 the the DT 36297 429 5 retina retina NNP 36297 429 6 of of IN 36297 429 7 man man NNP 36297 429 8 and and CC 36297 429 9 of of IN 36297 429 10 higher high JJR 36297 429 11 monkeys monkey NNS 36297 429 12 but but CC 36297 429 13 it -PRON- PRP 36297 429 14 quickly quickly RB 36297 429 15 disappears disappear VBZ 36297 429 16 as as IN 36297 429 17 we -PRON- PRP 36297 429 18 pass pass VBP 36297 429 19 down down RP 36297 429 20 the the DT 36297 429 21 scale scale NN 36297 429 22 of of IN 36297 429 23 animal animal NN 36297 429 24 life life NN 36297 429 25 . . . 36297 430 1 It -PRON- PRP 36297 430 2 may may MD 36297 430 3 be be VB 36297 430 4 necessary necessary JJ 36297 430 5 for for IN 36297 430 6 the the DT 36297 430 7 safety safety NN 36297 430 8 of of IN 36297 430 9 the the DT 36297 430 10 lower low JJR 36297 430 11 animals animal NNS 36297 430 12 that that IN 36297 430 13 they -PRON- PRP 36297 430 14 see see VBP 36297 430 15 equally equally RB 36297 430 16 well well RB 36297 430 17 over over IN 36297 430 18 a a DT 36297 430 19 large large JJ 36297 430 20 field field NN 36297 430 21 ; ; : 36297 430 22 however however RB 36297 430 23 , , , 36297 430 24 it -PRON- PRP 36297 430 25 appears appear VBZ 36297 430 26 advantageous advantageous JJ 36297 430 27 that that DT 36297 430 28 man man NN 36297 430 29 give give VB 36297 430 30 fixed fix VBN 36297 430 31 and and CC 36297 430 32 undivided undivided JJ 36297 430 33 attention attention NN 36297 430 34 to to IN 36297 430 35 the the DT 36297 430 36 object object NN 36297 430 37 looked look VBD 36297 430 38 at at IN 36297 430 39 . . . 36297 431 1 Man man NN 36297 431 2 does do VBZ 36297 431 3 not not RB 36297 431 4 need need VB 36297 431 5 to to TO 36297 431 6 trust trust VB 36297 431 7 solely solely RB 36297 431 8 to to IN 36297 431 9 his -PRON- PRP$ 36297 431 10 senses sense NNS 36297 431 11 to to TO 36297 431 12 protect protect VB 36297 431 13 himself -PRON- PRP 36297 431 14 from from IN 36297 431 15 dangers danger NNS 36297 431 16 . . . 36297 432 1 He -PRON- PRP 36297 432 2 uses use VBZ 36297 432 3 his -PRON- PRP$ 36297 432 4 intellect intellect NN 36297 432 5 to to IN 36297 432 6 invent invent VB 36297 432 7 and and CC 36297 432 8 to to TO 36297 432 9 construct construct VB 36297 432 10 artificial artificial JJ 36297 432 11 defenses defense NNS 36297 432 12 . . . 36297 433 1 Without without IN 36297 433 2 the the DT 36297 433 3 highly highly RB 36297 433 4 specialized specialized JJ 36297 433 5 fovea fovea NN 36297 433 6 we -PRON- PRP 36297 433 7 might may MD 36297 433 8 see see VB 36297 433 9 equally equally RB 36297 433 10 well well RB 36297 433 11 over over IN 36297 433 12 the the DT 36297 433 13 whole whole JJ 36297 433 14 retina retina NN 36297 433 15 but but CC 36297 433 16 could could MD 36297 433 17 not not RB 36297 433 18 look look VB 36297 433 19 attentively attentively RB 36297 433 20 at at IN 36297 433 21 anything anything NN 36297 433 22 , , , 36297 433 23 and and CC 36297 433 24 therefore therefore RB 36297 433 25 could could MD 36297 433 26 not not RB 36297 433 27 observe observe VB 36297 433 28 thoughtfully thoughtfully RB 36297 433 29 . . . 36297 434 1 When when WRB 36297 434 2 an an DT 36297 434 3 image image NN 36297 434 4 of of IN 36297 434 5 a a DT 36297 434 6 bright bright JJ 36297 434 7 object object NN 36297 434 8 exists exist VBZ 36297 434 9 upon upon IN 36297 434 10 the the DT 36297 434 11 retina retina NNP 36297 434 12 for for IN 36297 434 13 a a DT 36297 434 14 time time NN 36297 434 15 there there EX 36297 434 16 results result VBZ 36297 434 17 a a DT 36297 434 18 partial partial JJ 36297 434 19 exhaustion exhaustion NN 36297 434 20 or or CC 36297 434 21 fatigue fatigue NN 36297 434 22 of of IN 36297 434 23 the the DT 36297 434 24 retinal retinal JJ 36297 434 25 processes process NNS 36297 434 26 with with IN 36297 434 27 a a DT 36297 434 28 result result NN 36297 434 29 that that IN 36297 434 30 an an DT 36297 434 31 after after IN 36297 434 32 - - HYPH 36297 434 33 image image NN 36297 434 34 is be VBZ 36297 434 35 seen see VBN 36297 434 36 . . . 36297 435 1 This this DT 36297 435 2 after after IN 36297 435 3 - - HYPH 36297 435 4 image image NN 36297 435 5 may may MD 36297 435 6 be be VB 36297 435 7 bright bright JJ 36297 435 8 for for IN 36297 435 9 a a DT 36297 435 10 time time NN 36297 435 11 owing owe VBG 36297 435 12 to to IN 36297 435 13 the the DT 36297 435 14 fact fact NN 36297 435 15 that that IN 36297 435 16 it -PRON- PRP 36297 435 17 takes take VBZ 36297 435 18 time time NN 36297 435 19 for for IN 36297 435 20 the the DT 36297 435 21 retinal retinal JJ 36297 435 22 process process NN 36297 435 23 to to TO 36297 435 24 die die VB 36297 435 25 out out RP 36297 435 26 . . . 36297 436 1 Then then RB 36297 436 2 there there EX 36297 436 3 comes come VBZ 36297 436 4 a a DT 36297 436 5 reaction reaction NN 36297 436 6 which which WDT 36297 436 7 is be VBZ 36297 436 8 apparent apparent JJ 36297 436 9 when when WRB 36297 436 10 the the DT 36297 436 11 eye eye NN 36297 436 12 is be VBZ 36297 436 13 directed direct VBN 36297 436 14 toward toward IN 36297 436 15 illuminated illuminate VBN 36297 436 16 surfaces surface NNS 36297 436 17 . . . 36297 437 1 The the DT 36297 437 2 part part NN 36297 437 3 of of IN 36297 437 4 the the DT 36297 437 5 retina retina NNP 36297 437 6 which which WDT 36297 437 7 has have VBZ 36297 437 8 been be VBN 36297 437 9 fatigued fatigue VBN 36297 437 10 does do VBZ 36297 437 11 not not RB 36297 437 12 respond respond VB 36297 437 13 as as RB 36297 437 14 fully fully RB 36297 437 15 as as IN 36297 437 16 the the DT 36297 437 17 fresher fresh JJR 36297 437 18 areas area NNS 36297 437 19 , , , 36297 437 20 with with IN 36297 437 21 the the DT 36297 437 22 result result NN 36297 437 23 that that IN 36297 437 24 the the DT 36297 437 25 fatigued fatigued JJ 36297 437 26 area area NN 36297 437 27 contributes contribute VBZ 36297 437 28 a a DT 36297 437 29 darker dark JJR 36297 437 30 area area NN 36297 437 31 in in IN 36297 437 32 the the DT 36297 437 33 visual visual JJ 36297 437 34 field field NN 36297 437 35 . . . 36297 438 1 This this DT 36297 438 2 is be VBZ 36297 438 3 known know VBN 36297 438 4 as as IN 36297 438 5 an an DT 36297 438 6 after after IN 36297 438 7 - - HYPH 36297 438 8 image image NN 36297 438 9 and and CC 36297 438 10 there there EX 36297 438 11 are be VBP 36297 438 12 many many JJ 36297 438 13 interesting interesting JJ 36297 438 14 variations variation NNS 36297 438 15 . . . 36297 439 1 The the DT 36297 439 2 after after IN 36297 439 3 - - HYPH 36297 439 4 image image NN 36297 439 5 usually usually RB 36297 439 6 undergoes undergo VBZ 36297 439 7 a a DT 36297 439 8 series series NN 36297 439 9 of of IN 36297 439 10 changes change NNS 36297 439 11 in in IN 36297 439 12 color color NN 36297 439 13 as as RB 36297 439 14 well well RB 36297 439 15 as as IN 36297 439 16 in in IN 36297 439 17 brightness brightness NN 36297 439 18 as as IN 36297 439 19 the the DT 36297 439 20 retinal retinal JJ 36297 439 21 process process NN 36297 439 22 readjusts readjust VBZ 36297 439 23 itself -PRON- PRP 36297 439 24 . . . 36297 440 1 An an DT 36297 440 2 after after IN 36297 440 3 - - HYPH 36297 440 4 image image NN 36297 440 5 of of IN 36297 440 6 a a DT 36297 440 7 colored colored JJ 36297 440 8 object object NN 36297 440 9 may may MD 36297 440 10 often often RB 36297 440 11 appear appear VB 36297 440 12 of of IN 36297 440 13 a a DT 36297 440 14 color color NN 36297 440 15 complementary complementary JJ 36297 440 16 to to IN 36297 440 17 the the DT 36297 440 18 color color NN 36297 440 19 of of IN 36297 440 20 the the DT 36297 440 21 object object NN 36297 440 22 . . . 36297 441 1 This this DT 36297 441 2 is be VBZ 36297 441 3 generally generally RB 36297 441 4 accounted account VBN 36297 441 5 for for IN 36297 441 6 by by IN 36297 441 7 fatigue fatigue NN 36297 441 8 of of IN 36297 441 9 the the DT 36297 441 10 retinal retinal JJ 36297 441 11 process process NN 36297 441 12 . . . 36297 442 1 There there EX 36297 442 2 are be VBP 36297 442 3 many many JJ 36297 442 4 conflicting conflict VBG 36297 442 5 theories theory NNS 36297 442 6 of of IN 36297 442 7 color color NN 36297 442 8 - - HYPH 36297 442 9 vision vision NN 36297 442 10 but but CC 36297 442 11 they -PRON- PRP 36297 442 12 are be VBP 36297 442 13 not not RB 36297 442 14 as as RB 36297 442 15 conflicting conflict VBG 36297 442 16 in in IN 36297 442 17 respect respect NN 36297 442 18 to to IN 36297 442 19 the the DT 36297 442 20 aspect aspect NN 36297 442 21 of of IN 36297 442 22 fatigue fatigue NN 36297 442 23 as as IN 36297 442 24 in in IN 36297 442 25 some some DT 36297 442 26 other other JJ 36297 442 27 aspects aspect NNS 36297 442 28 . . . 36297 443 1 If if IN 36297 443 2 the the DT 36297 443 3 eye eye NN 36297 443 4 is be VBZ 36297 443 5 directed direct VBN 36297 443 6 toward toward IN 36297 443 7 a a DT 36297 443 8 green green JJ 36297 443 9 surface surface NN 36297 443 10 for for IN 36297 443 11 a a DT 36297 443 12 time time NN 36297 443 13 and and CC 36297 443 14 then then RB 36297 443 15 turned turn VBD 36297 443 16 toward toward IN 36297 443 17 a a DT 36297 443 18 white white JJ 36297 443 19 surface surface NN 36297 443 20 , , , 36297 443 21 the the DT 36297 443 22 fatigue fatigue NN 36297 443 23 to to IN 36297 443 24 green green JJ 36297 443 25 light light NN 36297 443 26 diminishes diminish VBZ 36297 443 27 the the DT 36297 443 28 extent extent NN 36297 443 29 of of IN 36297 443 30 response response NN 36297 443 31 to to IN 36297 443 32 the the DT 36297 443 33 green green JJ 36297 443 34 rays ray NNS 36297 443 35 in in IN 36297 443 36 the the DT 36297 443 37 light light NN 36297 443 38 reflected reflect VBN 36297 443 39 by by IN 36297 443 40 the the DT 36297 443 41 white white JJ 36297 443 42 surface surface NN 36297 443 43 . . . 36297 444 1 The the DT 36297 444 2 result result NN 36297 444 3 is be VBZ 36297 444 4 the the DT 36297 444 5 perception perception NN 36297 444 6 of of IN 36297 444 7 a a DT 36297 444 8 certain certain JJ 36297 444 9 area area NN 36297 444 10 of of IN 36297 444 11 the the DT 36297 444 12 white white NNP 36297 444 13 surface surface NNP 36297 444 14 ( ( -LRB- 36297 444 15 corresponding correspond VBG 36297 444 16 to to IN 36297 444 17 the the DT 36297 444 18 portion portion NN 36297 444 19 of of IN 36297 444 20 the the DT 36297 444 21 field field NN 36297 444 22 fatigued fatigue VBN 36297 444 23 by by IN 36297 444 24 green green JJ 36297 444 25 light light NN 36297 444 26 ) ) -RRB- 36297 444 27 as as IN 36297 444 28 of of IN 36297 444 29 a a DT 36297 444 30 color color NN 36297 444 31 equal equal JJ 36297 444 32 to to IN 36297 444 33 white white JJ 36297 444 34 minus minus CC 36297 444 35 some some DT 36297 444 36 green green JJ 36297 444 37 -- -- : 36297 444 38 the the DT 36297 444 39 result result NN 36297 444 40 of of IN 36297 444 41 which which WDT 36297 444 42 is be VBZ 36297 444 43 pink pink JJ 36297 444 44 or or CC 36297 444 45 purple purple JJ 36297 444 46 . . . 36297 445 1 This this DT 36297 445 2 is be VBZ 36297 445 3 easily easily RB 36297 445 4 understood understand VBN 36297 445 5 by by IN 36297 445 6 referring refer VBG 36297 445 7 to to IN 36297 445 8 the the DT 36297 445 9 principles principle NNS 36297 445 10 of of IN 36297 445 11 color color NN 36297 445 12 - - HYPH 36297 445 13 mixture mixture NN 36297 445 14 . . . 36297 446 1 Red red JJ 36297 446 2 , , , 36297 446 3 green green JJ 36297 446 4 , , , 36297 446 5 and and CC 36297 446 6 blue blue JJ 36297 446 7 ( ( -LRB- 36297 446 8 or or CC 36297 446 9 violet violet NNP 36297 446 10 ) ) -RRB- 36297 446 11 mixed mixed JJ 36297 446 12 in in IN 36297 446 13 proper proper JJ 36297 446 14 proportions proportion NNS 36297 446 15 will will MD 36297 446 16 produce produce VB 36297 446 17 any any DT 36297 446 18 color color NN 36297 446 19 or or CC 36297 446 20 tint tint NN 36297 446 21 and and CC 36297 446 22 even even RB 36297 446 23 white white JJ 36297 446 24 . . . 36297 447 1 Thus thus RB 36297 447 2 these these DT 36297 447 3 may may MD 36297 447 4 be be VB 36297 447 5 considered consider VBN 36297 447 6 to to TO 36297 447 7 be be VB 36297 447 8 the the DT 36297 447 9 components component NNS 36297 447 10 of of IN 36297 447 11 white white JJ 36297 447 12 light light NN 36297 447 13 . . . 36297 448 1 Hence hence RB 36297 448 2 if if IN 36297 448 3 the the DT 36297 448 4 retina retina NNP 36297 448 5 through through IN 36297 448 6 fatigue fatigue NN 36297 448 7 is be VBZ 36297 448 8 unable unable JJ 36297 448 9 to to TO 36297 448 10 respond respond VB 36297 448 11 fully fully RB 36297 448 12 to to IN 36297 448 13 the the DT 36297 448 14 green green JJ 36297 448 15 component component NN 36297 448 16 , , , 36297 448 17 the the DT 36297 448 18 result result NN 36297 448 19 may may MD 36297 448 20 be be VB 36297 448 21 expressed express VBN 36297 448 22 mathematically mathematically RB 36297 448 23 as as RB 36297 448 24 red red JJ 36297 448 25 plus plus CC 36297 448 26 blue blue JJ 36297 448 27 plus plus CC 36297 448 28 reduced reduced JJ 36297 448 29 green green NN 36297 448 30 , , , 36297 448 31 or or CC 36297 448 32 synthetically synthetically RB 36297 448 33 a a DT 36297 448 34 purplish purplish JJ 36297 448 35 white white JJ 36297 448 36 or or CC 36297 448 37 pink pink JJ 36297 448 38 . . . 36297 449 1 When when WRB 36297 449 2 fatigued fatigue VBN 36297 449 3 to to IN 36297 449 4 red red JJ 36297 449 5 light light NN 36297 449 6 the the DT 36297 449 7 after after IN 36297 449 8 - - HYPH 36297 449 9 image image NN 36297 449 10 on on IN 36297 449 11 a a DT 36297 449 12 white white JJ 36297 449 13 surface surface NN 36297 449 14 is be VBZ 36297 449 15 blue blue JJ 36297 449 16 - - HYPH 36297 449 17 green green JJ 36297 449 18 . . . 36297 450 1 When when WRB 36297 450 2 fatigued fatigue VBN 36297 450 3 to to IN 36297 450 4 blue blue JJ 36297 450 5 light light NN 36297 450 6 it -PRON- PRP 36297 450 7 is be VBZ 36297 450 8 yellowish yellowish JJ 36297 450 9 . . . 36297 451 1 Further further JJ 36297 451 2 mixtures mixture NNS 36297 451 3 may may MD 36297 451 4 be be VB 36297 451 5 obtained obtain VBN 36297 451 6 by by IN 36297 451 7 directing direct VBG 36297 451 8 the the DT 36297 451 9 after after IN 36297 451 10 - - HYPH 36297 451 11 image image NN 36297 451 12 upon upon IN 36297 451 13 colored colored JJ 36297 451 14 surfaces surface NNS 36297 451 15 . . . 36297 452 1 In in IN 36297 452 2 this this DT 36297 452 3 manner manner NN 36297 452 4 many many JJ 36297 452 5 of of IN 36297 452 6 the the DT 36297 452 7 interesting interesting JJ 36297 452 8 visual visual JJ 36297 452 9 phenomena phenomenon NNS 36297 452 10 and and CC 36297 452 11 illusions illusion NNS 36297 452 12 associated associate VBN 36297 452 13 with with IN 36297 452 14 the the DT 36297 452 15 viewing viewing NN 36297 452 16 of of IN 36297 452 17 colors color NNS 36297 452 18 are be VBP 36297 452 19 accounted account VBN 36297 452 20 for for IN 36297 452 21 . . . 36297 453 1 The the DT 36297 453 2 influence influence NN 36297 453 3 of of IN 36297 453 4 a a DT 36297 453 5 colored colored JJ 36297 453 6 environment environment NN 36297 453 7 upon upon IN 36297 453 8 a a DT 36297 453 9 colored colored JJ 36297 453 10 object object NN 36297 453 11 is be VBZ 36297 453 12 really really RB 36297 453 13 very very RB 36297 453 14 great great JJ 36297 453 15 . . . 36297 454 1 This this DT 36297 454 2 is be VBZ 36297 454 3 known know VBN 36297 454 4 as as IN 36297 454 5 simultaneous simultaneous JJ 36297 454 6 contrast contrast NN 36297 454 7 . . . 36297 455 1 The the DT 36297 455 2 influence influence NN 36297 455 3 of of IN 36297 455 4 the the DT 36297 455 5 immediately immediately RB 36297 455 6 previous previous JJ 36297 455 7 history history NN 36297 455 8 of of IN 36297 455 9 the the DT 36297 455 10 retina retina NN 36297 455 11 upon upon IN 36297 455 12 the the DT 36297 455 13 perception perception NN 36297 455 14 of of IN 36297 455 15 colored colored JJ 36297 455 16 surfaces surface NNS 36297 455 17 is be VBZ 36297 455 18 also also RB 36297 455 19 very very RB 36297 455 20 striking striking JJ 36297 455 21 . . . 36297 456 1 This this DT 36297 456 2 is be VBZ 36297 456 3 called call VBN 36297 456 4 successive successive JJ 36297 456 5 contrast contrast NN 36297 456 6 . . . 36297 457 1 It -PRON- PRP 36297 457 2 is be VBZ 36297 457 3 interesting interesting JJ 36297 457 4 to to TO 36297 457 5 note note VB 36297 457 6 that that IN 36297 457 7 an an DT 36297 457 8 after after IN 36297 457 9 - - HYPH 36297 457 10 image image NN 36297 457 11 produced produce VBN 36297 457 12 by by IN 36297 457 13 looking look VBG 36297 457 14 at at IN 36297 457 15 a a DT 36297 457 16 bright bright JJ 36297 457 17 light light JJ 36297 457 18 - - HYPH 36297 457 19 source source NN 36297 457 20 , , , 36297 457 21 for for IN 36297 457 22 example example NN 36297 457 23 , , , 36297 457 24 is be VBZ 36297 457 25 projected project VBN 36297 457 26 into into IN 36297 457 27 space space NN 36297 457 28 even even RB 36297 457 29 with with IN 36297 457 30 the the DT 36297 457 31 eyes eye NNS 36297 457 32 closed close VBN 36297 457 33 . . . 36297 458 1 It -PRON- PRP 36297 458 2 is be VBZ 36297 458 3 instructive instructive JJ 36297 458 4 to to TO 36297 458 5 study study VB 36297 458 6 after after IN 36297 458 7 - - HYPH 36297 458 8 images image NNS 36297 458 9 and and CC 36297 458 10 this this DT 36297 458 11 may may MD 36297 458 12 be be VB 36297 458 13 done do VBN 36297 458 14 at at IN 36297 458 15 any any DT 36297 458 16 moment moment NN 36297 458 17 . . . 36297 459 1 On on IN 36297 459 2 gazing gaze VBG 36297 459 3 at at IN 36297 459 4 the the DT 36297 459 5 sun sun NN 36297 459 6 for for IN 36297 459 7 an an DT 36297 459 8 instant instant NN 36297 459 9 and and CC 36297 459 10 then then RB 36297 459 11 looking look VBG 36297 459 12 away away RB 36297 459 13 , , , 36297 459 14 an an DT 36297 459 15 after after IN 36297 459 16 - - HYPH 36297 459 17 image image NN 36297 459 18 is be VBZ 36297 459 19 seen see VBN 36297 459 20 which which WDT 36297 459 21 passes pass VBZ 36297 459 22 in in IN 36297 459 23 color color NN 36297 459 24 from from IN 36297 459 25 green green JJ 36297 459 26 , , , 36297 459 27 blue blue JJ 36297 459 28 , , , 36297 459 29 purple purple JJ 36297 459 30 , , , 36297 459 31 etc etc FW 36297 459 32 . . FW 36297 459 33 , , , 36297 459 34 and and CC 36297 459 35 finally finally RB 36297 459 36 fades fade NNS 36297 459 37 . . . 36297 460 1 For for IN 36297 460 2 a a DT 36297 460 3 time time NN 36297 460 4 it -PRON- PRP 36297 460 5 is be VBZ 36297 460 6 brighter bright JJR 36297 460 7 than than IN 36297 460 8 the the DT 36297 460 9 background background NN 36297 460 10 which which WDT 36297 460 11 may may MD 36297 460 12 conveniently conveniently RB 36297 460 13 be be VB 36297 460 14 the the DT 36297 460 15 sky sky NN 36297 460 16 . . . 36297 461 1 On on IN 36297 461 2 closing close VBG 36297 461 3 the the DT 36297 461 4 eyes eye NNS 36297 461 5 and and CC 36297 461 6 placing place VBG 36297 461 7 the the DT 36297 461 8 hands hand NNS 36297 461 9 over over IN 36297 461 10 them -PRON- PRP 36297 461 11 the the DT 36297 461 12 background background NN 36297 461 13 now now RB 36297 461 14 is be VBZ 36297 461 15 dark dark JJ 36297 461 16 and and CC 36297 461 17 the the DT 36297 461 18 appearance appearance NN 36297 461 19 of of IN 36297 461 20 the the DT 36297 461 21 after after IN 36297 461 22 - - HYPH 36297 461 23 image image NN 36297 461 24 changes change NNS 36297 461 25 markedly markedly RB 36297 461 26 . . . 36297 462 1 There there EX 36297 462 2 are be VBP 36297 462 3 many many JJ 36297 462 4 kinds kind NNS 36297 462 5 , , , 36297 462 6 effects effect NNS 36297 462 7 , , , 36297 462 8 and and CC 36297 462 9 variations variation NNS 36297 462 10 of of IN 36297 462 11 after after IN 36297 462 12 - - HYPH 36297 462 13 images image NNS 36297 462 14 , , , 36297 462 15 some some DT 36297 462 16 of of IN 36297 462 17 which which WDT 36297 462 18 are be VBP 36297 462 19 discussed discuss VBN 36297 462 20 in in IN 36297 462 21 other other JJ 36297 462 22 chapters chapter NNS 36297 462 23 . . . 36297 463 1 As as IN 36297 463 2 the the DT 36297 463 3 intensity intensity NN 36297 463 4 of of IN 36297 463 5 illumination illumination NN 36297 463 6 of of IN 36297 463 7 a a DT 36297 463 8 landscape landscape NN 36297 463 9 , , , 36297 463 10 for for IN 36297 463 11 example example NN 36297 463 12 , , , 36297 463 13 decreases decrease VBZ 36297 463 14 toward toward IN 36297 463 15 twilight twilight NN 36297 463 16 , , , 36297 463 17 the the DT 36297 463 18 retina retina NNP 36297 463 19 diminishes diminishe NNS 36297 463 20 in in IN 36297 463 21 sensibility sensibility NN 36297 463 22 to to IN 36297 463 23 the the DT 36297 463 24 rays ray NNS 36297 463 25 of of IN 36297 463 26 longer long JJR 36297 463 27 wave wave NN 36297 463 28 - - HYPH 36297 463 29 lengths length NNS 36297 463 30 such such JJ 36297 463 31 as as IN 36297 463 32 yellow yellow JJ 36297 463 33 , , , 36297 463 34 orange orange JJ 36297 463 35 , , , 36297 463 36 and and CC 36297 463 37 red red NN 36297 463 38 . . . 36297 464 1 Therefore therefore RB 36297 464 2 , , , 36297 464 3 it -PRON- PRP 36297 464 4 becomes become VBZ 36297 464 5 relatively relatively RB 36297 464 6 more more RBR 36297 464 7 sensitive sensitive JJ 36297 464 8 to to IN 36297 464 9 the the DT 36297 464 10 rays ray NNS 36297 464 11 of of IN 36297 464 12 shorter short JJR 36297 464 13 wave wave NN 36297 464 14 - - HYPH 36297 464 15 length length NN 36297 464 16 such such JJ 36297 464 17 as as IN 36297 464 18 green green JJ 36297 464 19 , , , 36297 464 20 blue blue JJ 36297 464 21 , , , 36297 464 22 and and CC 36297 464 23 violet violet NN 36297 464 24 . . . 36297 465 1 The the DT 36297 465 2 effects effect NNS 36297 465 3 of of IN 36297 465 4 this this DT 36297 465 5 Purkinje Purkinje NNP 36297 465 6 phenomenon phenomenon NN 36297 465 7 ( ( -LRB- 36297 465 8 named name VBN 36297 465 9 after after IN 36297 465 10 the the DT 36297 465 11 discoverer discoverer NN 36297 465 12 ) ) -RRB- 36297 465 13 may may MD 36297 465 14 be be VB 36297 465 15 added add VBN 36297 465 16 to to IN 36297 465 17 the the DT 36297 465 18 class class NN 36297 465 19 of of IN 36297 465 20 illusions illusion NNS 36297 465 21 treated treat VBN 36297 465 22 in in IN 36297 465 23 this this DT 36297 465 24 book book NN 36297 465 25 . . . 36297 466 1 It -PRON- PRP 36297 466 2 is be VBZ 36297 466 3 interesting interesting JJ 36297 466 4 to to TO 36297 466 5 note note VB 36297 466 6 in in IN 36297 466 7 this this DT 36297 466 8 connection connection NN 36297 466 9 that that DT 36297 466 10 moonlight moonlight NN 36297 466 11 is be VBZ 36297 466 12 represented represent VBN 36297 466 13 on on IN 36297 466 14 some some DT 36297 466 15 paintings painting NNS 36297 466 16 and and CC 36297 466 17 especially especially RB 36297 466 18 on on IN 36297 466 19 the the DT 36297 466 20 stage stage NN 36297 466 21 as as IN 36297 466 22 greenish greenish JJ 36297 466 23 blue blue JJ 36297 466 24 in in IN 36297 466 25 color color NN 36297 466 26 , , , 36297 466 27 notwithstanding notwithstanding IN 36297 466 28 that that IN 36297 466 29 physical physical JJ 36297 466 30 measurements measurement NNS 36297 466 31 show show VBP 36297 466 32 it -PRON- PRP 36297 466 33 to to TO 36297 466 34 be be VB 36297 466 35 approximately approximately RB 36297 466 36 the the DT 36297 466 37 color color NN 36297 466 38 of of IN 36297 466 39 sunlight sunlight NN 36297 466 40 . . . 36297 467 1 In in IN 36297 467 2 fact fact NN 36297 467 3 , , , 36297 467 4 it -PRON- PRP 36297 467 5 is be VBZ 36297 467 6 sunlight sunlight NN 36297 467 7 reflected reflect VBN 36297 467 8 by by IN 36297 467 9 dead dead JJ 36297 467 10 , , , 36297 467 11 frigid frigid JJ 36297 467 12 , , , 36297 467 13 and and CC 36297 467 14 practically practically RB 36297 467 15 colorless colorless VB 36297 467 16 matter matter NN 36297 467 17 . . . 36297 468 1 Some some DT 36297 468 2 illusions illusion NNS 36297 468 3 may may MD 36297 468 4 be be VB 36297 468 5 directly directly RB 36297 468 6 traced trace VBN 36297 468 7 to to IN 36297 468 8 the the DT 36297 468 9 structure structure NN 36297 468 10 of of IN 36297 468 11 the the DT 36297 468 12 eye eye NN 36297 468 13 under under IN 36297 468 14 unusual unusual JJ 36297 468 15 lighting lighting NN 36297 468 16 conditions condition NNS 36297 468 17 . . . 36297 469 1 For for IN 36297 469 2 example example NN 36297 469 3 , , , 36297 469 4 in in IN 36297 469 5 a a DT 36297 469 6 dark dark JJ 36297 469 7 room room NN 36297 469 8 hold hold VB 36297 469 9 a a DT 36297 469 10 lamp lamp NN 36297 469 11 obliquely obliquely RB 36297 469 12 outward outward RB 36297 469 13 but but CC 36297 469 14 near near IN 36297 469 15 one one CD 36297 469 16 eye eye NN 36297 469 17 ( ( -LRB- 36297 469 18 the the DT 36297 469 19 other other JJ 36297 469 20 being be VBG 36297 469 21 closed close VBN 36297 469 22 and and CC 36297 469 23 shielded shield VBN 36297 469 24 ) ) -RRB- 36297 469 25 and and CC 36297 469 26 forward forward RB 36297 469 27 sufficiently sufficiently RB 36297 469 28 for for IN 36297 469 29 the the DT 36297 469 30 retina retina NNP 36297 469 31 to to TO 36297 469 32 be be VB 36297 469 33 strongly strongly RB 36297 469 34 illuminated illuminate VBN 36297 469 35 . . . 36297 470 1 Move move VB 36297 470 2 the the DT 36297 470 3 lamp lamp NN 36297 470 4 gently gently RB 36297 470 5 while while IN 36297 470 6 gazing gaze VBG 36297 470 7 at at IN 36297 470 8 a a DT 36297 470 9 plain plain JJ 36297 470 10 dark dark JJ 36297 470 11 surface surface NN 36297 470 12 such such JJ 36297 470 13 as as IN 36297 470 14 the the DT 36297 470 15 wall wall NN 36297 470 16 . . . 36297 471 1 Finally finally RB 36297 471 2 the the DT 36297 471 3 visual visual JJ 36297 471 4 field field NN 36297 471 5 appears appear VBZ 36297 471 6 dark dark JJ 36297 471 7 , , , 36297 471 8 due due IN 36297 471 9 to to IN 36297 471 10 the the DT 36297 471 11 intense intense JJ 36297 471 12 illumination illumination NN 36297 471 13 of of IN 36297 471 14 the the DT 36297 471 15 retina retina NNP 36297 471 16 and and CC 36297 471 17 there there EX 36297 471 18 will will MD 36297 471 19 appear appear VB 36297 471 20 , , , 36297 471 21 apparently apparently RB 36297 471 22 projected project VBN 36297 471 23 upon upon IN 36297 471 24 the the DT 36297 471 25 wall wall NN 36297 471 26 , , , 36297 471 27 an an DT 36297 471 28 image image NN 36297 471 29 resembling resemble VBG 36297 471 30 a a DT 36297 471 31 branching branch VBG 36297 471 32 leafless leafless NN 36297 471 33 tree tree NN 36297 471 34 . . . 36297 472 1 These these DT 36297 472 2 are be VBP 36297 472 3 really really RB 36297 472 4 shadows shadow NNS 36297 472 5 of of IN 36297 472 6 the the DT 36297 472 7 blood blood NN 36297 472 8 vessels vessel NNS 36297 472 9 in in IN 36297 472 10 the the DT 36297 472 11 retina retina NNP 36297 472 12 . . . 36297 473 1 The the DT 36297 473 2 experiment experiment NN 36297 473 3 is be VBZ 36297 473 4 more more RBR 36297 473 5 successful successful JJ 36297 473 6 if if IN 36297 473 7 an an DT 36297 473 8 image image NN 36297 473 9 of of IN 36297 473 10 a a DT 36297 473 11 bright bright JJ 36297 473 12 light light JJ 36297 473 13 - - HYPH 36297 473 14 source source NN 36297 473 15 is be VBZ 36297 473 16 focused focus VBN 36297 473 17 on on IN 36297 473 18 the the DT 36297 473 19 sclerotic sclerotic NN 36297 473 20 near near IN 36297 473 21 the the DT 36297 473 22 cornea cornea NN 36297 473 23 . . . 36297 474 1 If if IN 36297 474 2 this this DT 36297 474 3 image image NN 36297 474 4 of of IN 36297 474 5 the the DT 36297 474 6 light light JJ 36297 474 7 - - HYPH 36297 474 8 source source NN 36297 474 9 is be VBZ 36297 474 10 moved move VBN 36297 474 11 , , , 36297 474 12 the the DT 36297 474 13 tree tree NN 36297 474 14 - - HYPH 36297 474 15 like like JJ 36297 474 16 image image NN 36297 474 17 seen see VBN 36297 474 18 in in IN 36297 474 19 the the DT 36297 474 20 visual visual JJ 36297 474 21 field field NN 36297 474 22 will will MD 36297 474 23 also also RB 36297 474 24 move move VB 36297 474 25 . . . 36297 475 1 The the DT 36297 475 2 rate rate NN 36297 475 3 of of IN 36297 475 4 growth growth NN 36297 475 5 and and CC 36297 475 6 decay decay NN 36297 475 7 of of IN 36297 475 8 various various JJ 36297 475 9 color color NN 36297 475 10 - - HYPH 36297 475 11 sensations sensation NNS 36297 475 12 varies vary VBZ 36297 475 13 considerably considerably RB 36297 475 14 . . . 36297 476 1 By by IN 36297 476 2 taking take VBG 36297 476 3 advantage advantage NN 36297 476 4 of of IN 36297 476 5 this this DT 36297 476 6 fact fact NN 36297 476 7 many many JJ 36297 476 8 illusions illusion NNS 36297 476 9 can can MD 36297 476 10 be be VB 36297 476 11 produced produce VBN 36297 476 12 . . . 36297 477 1 In in IN 36297 477 2 fact fact NN 36297 477 3 , , , 36297 477 4 the the DT 36297 477 5 careful careful JJ 36297 477 6 observer observer NN 36297 477 7 will will MD 36297 477 8 encounter encounter VB 36297 477 9 many many JJ 36297 477 10 illusions illusion NNS 36297 477 11 which which WDT 36297 477 12 may may MD 36297 477 13 be be VB 36297 477 14 readily readily RB 36297 477 15 accounted account VBN 36297 477 16 for for IN 36297 477 17 in in IN 36297 477 18 this this DT 36297 477 19 manner manner NN 36297 477 20 . . . 36297 478 1 It -PRON- PRP 36297 478 2 may may MD 36297 478 3 be be VB 36297 478 4 said say VBN 36297 478 5 that that IN 36297 478 6 in in IN 36297 478 7 general general JJ 36297 478 8 the the DT 36297 478 9 eyes eye NNS 36297 478 10 are be VBP 36297 478 11 never never RB 36297 478 12 at at IN 36297 478 13 rest rest NN 36297 478 14 . . . 36297 479 1 Involuntary involuntary JJ 36297 479 2 eye eye NN 36297 479 3 - - HYPH 36297 479 4 movements movement NNS 36297 479 5 are be VBP 36297 479 6 taking take VBG 36297 479 7 place place NN 36297 479 8 all all PDT 36297 479 9 the the DT 36297 479 10 time time NN 36297 479 11 , , , 36297 479 12 at at IN 36297 479 13 least least JJS 36297 479 14 during during IN 36297 479 15 consciousness consciousness NN 36297 479 16 . . . 36297 480 1 Some some DT 36297 480 2 have have VBP 36297 480 3 given give VBN 36297 480 4 this this DT 36297 480 5 restlessness restlessness NN 36297 480 6 a a DT 36297 480 7 major major JJ 36297 480 8 part part NN 36297 480 9 in in IN 36297 480 10 the the DT 36297 480 11 process process NN 36297 480 12 of of IN 36297 480 13 vision vision NN 36297 480 14 but but CC 36297 480 15 aside aside RB 36297 480 16 from from IN 36297 480 17 the the DT 36297 480 18 correctness correctness NN 36297 480 19 of of IN 36297 480 20 theories theory NNS 36297 480 21 involving involve VBG 36297 480 22 eye eye NN 36297 480 23 - - HYPH 36297 480 24 movements movement NNS 36297 480 25 , , , 36297 480 26 it -PRON- PRP 36297 480 27 is be VBZ 36297 480 28 a a DT 36297 480 29 fact fact NN 36297 480 30 that that IN 36297 480 31 they -PRON- PRP 36297 480 32 are be VBP 36297 480 33 responsible responsible JJ 36297 480 34 for for IN 36297 480 35 certain certain JJ 36297 480 36 illusions illusion NNS 36297 480 37 . . . 36297 481 1 On on IN 36297 481 2 a a DT 36297 481 3 star star NN 36297 481 4 - - HYPH 36297 481 5 lit light VBN 36297 481 6 night night NN 36297 481 7 if if IN 36297 481 8 one one PRP 36297 481 9 lies lie VBZ 36297 481 10 down down RP 36297 481 11 and and CC 36297 481 12 looks look VBZ 36297 481 13 up up RP 36297 481 14 at at IN 36297 481 15 a a DT 36297 481 16 star star NN 36297 481 17 the the DT 36297 481 18 latter latter NN 36297 481 19 will will MD 36297 481 20 be be VB 36297 481 21 seen see VBN 36297 481 22 to to TO 36297 481 23 appear appear VB 36297 481 24 to to TO 36297 481 25 be be VB 36297 481 26 swimming swim VBG 36297 481 27 about about IN 36297 481 28 more more RBR 36297 481 29 or or CC 36297 481 30 less less RBR 36297 481 31 jerkily jerkily RB 36297 481 32 . . . 36297 482 1 On on IN 36297 482 2 viewing view VBG 36297 482 3 a a DT 36297 482 4 rapidly rapidly RB 36297 482 5 revolving revolving JJ 36297 482 6 wheel wheel NN 36297 482 7 of of IN 36297 482 8 an an DT 36297 482 9 automobile automobile NN 36297 482 10 as as IN 36297 482 11 it -PRON- PRP 36297 482 12 proceeds proceed VBZ 36297 482 13 down down RP 36297 482 14 the the DT 36297 482 15 street street NN 36297 482 16 , , , 36297 482 17 occasionally occasionally RB 36297 482 18 it -PRON- PRP 36297 482 19 will will MD 36297 482 20 be be VB 36297 482 21 seen see VBN 36297 482 22 to to TO 36297 482 23 cease cease VB 36297 482 24 revolving revolve VBG 36297 482 25 momentarily momentarily RB 36297 482 26 . . . 36297 483 1 These these DT 36297 483 2 apparently apparently RB 36297 483 3 are be VBP 36297 483 4 accounted account VBN 36297 483 5 for for IN 36297 483 6 by by IN 36297 483 7 involuntary involuntary JJ 36297 483 8 eye eye NN 36297 483 9 - - HYPH 36297 483 10 movements movement NNS 36297 483 11 which which WDT 36297 483 12 take take VBP 36297 483 13 place place NN 36297 483 14 regardless regardless RB 36297 483 15 of of IN 36297 483 16 the the DT 36297 483 17 effort effort NN 36297 483 18 made make VBN 36297 483 19 to to TO 36297 483 20 fixate fixate VB 36297 483 21 vision vision NN 36297 483 22 . . . 36297 484 1 If if IN 36297 484 2 the the DT 36297 484 3 eyelids eyelid NNS 36297 484 4 are be VBP 36297 484 5 almost almost RB 36297 484 6 closed closed JJ 36297 484 7 , , , 36297 484 8 streamers streamer NNS 36297 484 9 appear appear VBP 36297 484 10 to to TO 36297 484 11 radiate radiate VB 36297 484 12 in in IN 36297 484 13 various various JJ 36297 484 14 directions direction NNS 36297 484 15 from from IN 36297 484 16 a a DT 36297 484 17 light light JJ 36297 484 18 - - HYPH 36297 484 19 source source NN 36297 484 20 . . . 36297 485 1 Movements movement NNS 36297 485 2 of of IN 36297 485 3 the the DT 36297 485 4 eyelids eyelid NNS 36297 485 5 when when WRB 36297 485 6 nearly nearly RB 36297 485 7 closed close VBD 36297 485 8 sometimes sometimes RB 36297 485 9 cause cause VB 36297 485 10 objects object NNS 36297 485 11 to to TO 36297 485 12 appear appear VB 36297 485 13 to to TO 36297 485 14 move move VB 36297 485 15 . . . 36297 486 1 These these DT 36297 486 2 may may MD 36297 486 3 be be VB 36297 486 4 accounted account VBN 36297 486 5 for for IN 36297 486 6 perhaps perhaps RB 36297 486 7 by by IN 36297 486 8 the the DT 36297 486 9 distortion distortion NN 36297 486 10 of of IN 36297 486 11 the the DT 36297 486 12 moist moist JJ 36297 486 13 film film NN 36297 486 14 which which WDT 36297 486 15 covers cover VBZ 36297 486 16 the the DT 36297 486 17 cornea cornea NN 36297 486 18 . . . 36297 487 1 The the DT 36297 487 2 foregoing foregoing NN 36297 487 3 are be VBP 36297 487 4 only only RB 36297 487 5 a a DT 36297 487 6 few few JJ 36297 487 7 of of IN 36297 487 8 the the DT 36297 487 9 many many JJ 36297 487 10 visual visual JJ 36297 487 11 phenomena phenomenon NNS 36297 487 12 due due JJ 36297 487 13 largely largely RB 36297 487 14 to to IN 36297 487 15 the the DT 36297 487 16 structure structure NN 36297 487 17 of of IN 36297 487 18 the the DT 36297 487 19 eye eye NN 36297 487 20 . . . 36297 488 1 The the DT 36297 488 2 effects effect NNS 36297 488 3 of of IN 36297 488 4 these these DT 36297 488 5 and and CC 36297 488 6 many many JJ 36297 488 7 others other NNS 36297 488 8 enter enter VBP 36297 488 9 into into IN 36297 488 10 visual visual JJ 36297 488 11 illusions illusion NNS 36297 488 12 , , , 36297 488 13 as as IN 36297 488 14 will will MD 36297 488 15 be be VB 36297 488 16 seen see VBN 36297 488 17 here here RB 36297 488 18 and and CC 36297 488 19 there there RB 36297 488 20 throughout throughout IN 36297 488 21 the the DT 36297 488 22 chapters chapter NNS 36297 488 23 which which WDT 36297 488 24 follow follow VBP 36297 488 25 . . . 36297 489 1 III iii CD 36297 489 2 VISION vision NN 36297 489 3 A a DT 36297 489 4 description description NN 36297 489 5 of of IN 36297 489 6 the the DT 36297 489 7 eye eye NN 36297 489 8 by by IN 36297 489 9 no no DT 36297 489 10 means means NN 36297 489 11 suffices suffice VBZ 36297 489 12 to to TO 36297 489 13 clarify clarify VB 36297 489 14 the the DT 36297 489 15 visual visual JJ 36297 489 16 process process NN 36297 489 17 . . . 36297 490 1 Even even RB 36297 490 2 the the DT 36297 490 3 descriptions description NNS 36297 490 4 of of IN 36297 490 5 various various JJ 36297 490 6 phenomena phenomenon NNS 36297 490 7 in in IN 36297 490 8 the the DT 36297 490 9 preceding precede VBG 36297 490 10 chapter chapter NN 36297 490 11 accomplish accomplish VB 36297 490 12 little little RB 36297 490 13 more more JJR 36297 490 14 than than IN 36297 490 15 to to TO 36297 490 16 acquaint acquaint VB 36297 490 17 the the DT 36297 490 18 reader reader NN 36297 490 19 with with IN 36297 490 20 the the DT 36297 490 21 operation operation NN 36297 490 22 of of IN 36297 490 23 a a DT 36297 490 24 mechanism mechanism NN 36297 490 25 , , , 36297 490 26 although although IN 36297 490 27 they -PRON- PRP 36297 490 28 suggest suggest VBP 36297 490 29 the the DT 36297 490 30 trend trend NN 36297 490 31 of of IN 36297 490 32 the the DT 36297 490 33 explanations explanation NNS 36297 490 34 of of IN 36297 490 35 many many JJ 36297 490 36 illusions illusion NNS 36297 490 37 . . . 36297 491 1 At at IN 36297 491 2 best good JJS 36297 491 3 only only JJ 36297 491 4 monocular monocular JJ 36297 491 5 vision vision NN 36297 491 6 has have VBZ 36297 491 7 been be VBN 36297 491 8 treated treat VBN 36297 491 9 , , , 36297 491 10 and and CC 36297 491 11 it -PRON- PRP 36297 491 12 does do VBZ 36297 491 13 not not RB 36297 491 14 exist exist VB 36297 491 15 normally normally RB 36297 491 16 for for IN 36297 491 17 human human JJ 36297 491 18 beings being NNS 36297 491 19 . . . 36297 492 1 A a DT 36297 492 2 person person NN 36297 492 3 capable capable JJ 36297 492 4 only only RB 36297 492 5 of of IN 36297 492 6 monocular monocular JJ 36297 492 7 vision vision NN 36297 492 8 would would MD 36297 492 9 be be VB 36297 492 10 like like IN 36297 492 11 Cyclops Cyclops NNP 36297 492 12 Polyphemus Polyphemus NNP 36297 492 13 . . . 36297 493 1 We -PRON- PRP 36297 493 2 might may MD 36297 493 3 have have VB 36297 493 4 two two CD 36297 493 5 eyes eye NNS 36297 493 6 , , , 36297 493 7 or or CC 36297 493 8 even even RB 36297 493 9 , , , 36297 493 10 like like UH 36297 493 11 Argus Argus NNP 36297 493 12 , , , 36297 493 13 possess possess VB 36297 493 14 a a DT 36297 493 15 hundred hundred CD 36297 493 16 eyes eye NNS 36297 493 17 and and CC 36297 493 18 still still RB 36297 493 19 not not RB 36297 493 20 experience experience VB 36297 493 21 the the DT 36297 493 22 wonderful wonderful JJ 36297 493 23 advantages advantage NNS 36297 493 24 of of IN 36297 493 25 binocular binocular JJ 36297 493 26 vision vision NN 36297 493 27 , , , 36297 493 28 for for IN 36297 493 29 each each DT 36297 493 30 eye eye NN 36297 493 31 might may MD 36297 493 32 see see VB 36297 493 33 independently independently RB 36297 493 34 . . . 36297 494 1 The the DT 36297 494 2 phenomena phenomenon NNS 36297 494 3 of of IN 36297 494 4 binocular binocular JJ 36297 494 5 vision vision NN 36297 494 6 are be VBP 36297 494 7 far far RB 36297 494 8 less less RBR 36297 494 9 physical physical JJ 36297 494 10 than than IN 36297 494 11 those those DT 36297 494 12 of of IN 36297 494 13 monocular monocular JJ 36297 494 14 vision vision NN 36297 494 15 . . . 36297 495 1 They -PRON- PRP 36297 495 2 are be VBP 36297 495 3 much much RB 36297 495 4 more more RBR 36297 495 5 obscure obscure JJ 36297 495 6 , , , 36297 495 7 illusory illusory JJ 36297 495 8 , , , 36297 495 9 and and CC 36297 495 10 perplexing perplex VBG 36297 495 11 because because IN 36297 495 12 they -PRON- PRP 36297 495 13 are be VBP 36297 495 14 more more JJR 36297 495 15 complexly complexly NN 36297 495 16 interwoven interwoven JJ 36297 495 17 with with IN 36297 495 18 or or CC 36297 495 19 allied ally VBN 36297 495 20 to to IN 36297 495 21 psychological psychological JJ 36297 495 22 phenomena phenomenon NNS 36297 495 23 . . . 36297 496 1 The the DT 36297 496 2 sense sense NN 36297 496 3 of of IN 36297 496 4 sight sight NN 36297 496 5 differs differ VBZ 36297 496 6 considerably considerably RB 36297 496 7 from from IN 36297 496 8 the the DT 36297 496 9 other other JJ 36297 496 10 senses sense NNS 36297 496 11 . . . 36297 497 1 The the DT 36297 497 2 sense sense NN 36297 497 3 of of IN 36297 497 4 touch touch NN 36297 497 5 requires require VBZ 36297 497 6 solid solid JJ 36297 497 7 contact contact NN 36297 497 8 ( ( -LRB- 36297 497 9 usually usually RB 36297 497 10 ) ) -RRB- 36297 497 11 ; ; : 36297 497 12 taste taste NN 36297 497 13 involves involve VBZ 36297 497 14 liquid liquid JJ 36297 497 15 contact contact NN 36297 497 16 ; ; : 36297 497 17 smell smell NN 36297 497 18 , , , 36297 497 19 gaseous gaseous JJ 36297 497 20 contact contact NN 36297 497 21 ; ; : 36297 497 22 and and CC 36297 497 23 hearing hearing NN 36297 497 24 depends depend VBZ 36297 497 25 upon upon IN 36297 497 26 a a DT 36297 497 27 relay relay NN 36297 497 28 of of IN 36297 497 29 vibrations vibration NNS 36297 497 30 from from IN 36297 497 31 an an DT 36297 497 32 object object NN 36297 497 33 through through IN 36297 497 34 another another DT 36297 497 35 medium medium NN 36297 497 36 ( ( -LRB- 36297 497 37 usually usually RB 36297 497 38 air air NN 36297 497 39 ) ) -RRB- 36297 497 40 , , , 36297 497 41 resulting result VBG 36297 497 42 finally finally RB 36297 497 43 in in IN 36297 497 44 contact contact NN 36297 497 45 . . . 36297 498 1 However however RB 36297 498 2 , , , 36297 498 3 we -PRON- PRP 36297 498 4 perceive perceive VBP 36297 498 5 things thing NNS 36297 498 6 at at IN 36297 498 7 a a DT 36297 498 8 distance distance NN 36297 498 9 through through IN 36297 498 10 vibration vibration NN 36297 498 11 ( ( -LRB- 36297 498 12 electromagnetic electromagnetic JJ 36297 498 13 waves wave NNS 36297 498 14 called call VBD 36297 498 15 light light NN 36297 498 16 ) ) -RRB- 36297 498 17 conveyed convey VBN 36297 498 18 by by IN 36297 498 19 a a DT 36297 498 20 subtle subtle JJ 36297 498 21 , , , 36297 498 22 intangible intangible JJ 36297 498 23 , , , 36297 498 24 universal universal JJ 36297 498 25 medium medium NN 36297 498 26 which which WDT 36297 498 27 is be VBZ 36297 498 28 unrecognizable unrecognizable JJ 36297 498 29 excepting except VBG 36297 498 30 as as IN 36297 498 31 a a DT 36297 498 32 hypothetically hypothetically RB 36297 498 33 necessary necessary JJ 36297 498 34 bearer bearer NN 36297 498 35 of of IN 36297 498 36 light light JJ 36297 498 37 - - HYPH 36297 498 38 waves wave NNS 36297 498 39 or or CC 36297 498 40 , , , 36297 498 41 more more RBR 36297 498 42 generally generally RB 36297 498 43 , , , 36297 498 44 radiant radiant JJ 36297 498 45 energy energy NN 36297 498 46 . . . 36297 499 1 It -PRON- PRP 36297 499 2 also also RB 36297 499 3 is be VBZ 36297 499 4 interesting interesting JJ 36297 499 5 to to TO 36297 499 6 compare compare VB 36297 499 7 the the DT 36297 499 8 subjectiveness subjectiveness NN 36297 499 9 and and CC 36297 499 10 objectiveness objectiveness NN 36297 499 11 of of IN 36297 499 12 sensations sensation NNS 36297 499 13 . . . 36297 500 1 The the DT 36297 500 2 sensation sensation NN 36297 500 3 of of IN 36297 500 4 taste taste NN 36297 500 5 is be VBZ 36297 500 6 subjective subjective JJ 36297 500 7 ; ; : 36297 500 8 it -PRON- PRP 36297 500 9 is be VBZ 36297 500 10 in in IN 36297 500 11 us -PRON- PRP 36297 500 12 , , , 36297 500 13 not not RB 36297 500 14 in in IN 36297 500 15 the the DT 36297 500 16 body body NN 36297 500 17 tasted taste VBD 36297 500 18 . . . 36297 501 1 In in IN 36297 501 2 smell smell NN 36297 501 3 we -PRON- PRP 36297 501 4 perceive perceive VBP 36297 501 5 the the DT 36297 501 6 sensation sensation NN 36297 501 7 in in IN 36297 501 8 the the DT 36297 501 9 nose nose NN 36297 501 10 and and CC 36297 501 11 by by IN 36297 501 12 experience experience NN 36297 501 13 refer refer VBP 36297 501 14 it -PRON- PRP 36297 501 15 to to IN 36297 501 16 an an DT 36297 501 17 object object NN 36297 501 18 at at IN 36297 501 19 a a DT 36297 501 20 distance distance NN 36297 501 21 . . . 36297 502 1 The the DT 36297 502 2 sensation sensation NN 36297 502 3 of of IN 36297 502 4 hearing hearing NN 36297 502 5 is be VBZ 36297 502 6 objective objective JJ 36297 502 7 ; ; : 36297 502 8 that that RB 36297 502 9 is is RB 36297 502 10 , , , 36297 502 11 we -PRON- PRP 36297 502 12 refer refer VBP 36297 502 13 the the DT 36297 502 14 cause cause NN 36297 502 15 to to IN 36297 502 16 an an DT 36297 502 17 object object NN 36297 502 18 so so RB 36297 502 19 completely completely RB 36297 502 20 that that IN 36297 502 21 there there EX 36297 502 22 is be VBZ 36297 502 23 practically practically RB 36297 502 24 no no DT 36297 502 25 consciousness consciousness NN 36297 502 26 of of IN 36297 502 27 sensation sensation NN 36297 502 28 in in IN 36297 502 29 the the DT 36297 502 30 ear ear NN 36297 502 31 . . . 36297 503 1 In in IN 36297 503 2 sight sight NN 36297 503 3 the the DT 36297 503 4 impression impression NN 36297 503 5 is be VBZ 36297 503 6 so so RB 36297 503 7 completely completely RB 36297 503 8 projected project VBN 36297 503 9 outward outward RB 36297 503 10 into into IN 36297 503 11 space space NN 36297 503 12 and and CC 36297 503 13 there there EX 36297 503 14 is be VBZ 36297 503 15 so so RB 36297 503 16 little little JJ 36297 503 17 consciousness consciousness NN 36297 503 18 of of IN 36297 503 19 any any DT 36297 503 20 occurrence occurrence NN 36297 503 21 in in IN 36297 503 22 the the DT 36297 503 23 eye eye NN 36297 503 24 that that IN 36297 503 25 it -PRON- PRP 36297 503 26 is be VBZ 36297 503 27 extremely extremely RB 36297 503 28 difficult difficult JJ 36297 503 29 to to TO 36297 503 30 convince convince VB 36297 503 31 ourselves -PRON- PRP 36297 503 32 that that IN 36297 503 33 it -PRON- PRP 36297 503 34 is be VBZ 36297 503 35 essentially essentially RB 36297 503 36 a a DT 36297 503 37 subjective subjective JJ 36297 503 38 sensation sensation NN 36297 503 39 . . . 36297 504 1 The the DT 36297 504 2 foregoing forego VBG 36297 504 3 order order NN 36297 504 4 represents represent VBZ 36297 504 5 the the DT 36297 504 6 sense sense NN 36297 504 7 - - HYPH 36297 504 8 organs organ NNS 36297 504 9 in in IN 36297 504 10 increasing increase VBG 36297 504 11 specialization specialization NN 36297 504 12 and and CC 36297 504 13 refinement refinement NN 36297 504 14 . . . 36297 505 1 In in IN 36297 505 2 the the DT 36297 505 3 two two CD 36297 505 4 higher high JJR 36297 505 5 senses sense NNS 36297 505 6 -- -- : 36297 505 7 sight sight NN 36297 505 8 and and CC 36297 505 9 hearing hearing NN 36297 505 10 -- -- : 36297 505 11 there there EX 36297 505 12 is be VBZ 36297 505 13 no no DT 36297 505 14 direct direct JJ 36297 505 15 contact contact NN 36297 505 16 with with IN 36297 505 17 the the DT 36297 505 18 object object NN 36297 505 19 and and CC 36297 505 20 an an DT 36297 505 21 intricate intricate JJ 36297 505 22 mechanism mechanism NN 36297 505 23 is be VBZ 36297 505 24 placed place VBN 36297 505 25 in in IN 36297 505 26 front front NN 36297 505 27 of of IN 36297 505 28 the the DT 36297 505 29 specialized specialized JJ 36297 505 30 nerve nerve NN 36297 505 31 to to TO 36297 505 32 define define VB 36297 505 33 and and CC 36297 505 34 to to TO 36297 505 35 intensify intensify VB 36297 505 36 the the DT 36297 505 37 impression impression NN 36297 505 38 . . . 36297 506 1 In in IN 36297 506 2 the the DT 36297 506 3 case case NN 36297 506 4 of of IN 36297 506 5 vision vision NN 36297 506 6 this this DT 36297 506 7 highly highly RB 36297 506 8 developed develop VBN 36297 506 9 instrument instrument NN 36297 506 10 makes make VBZ 36297 506 11 it -PRON- PRP 36297 506 12 possible possible JJ 36297 506 13 to to TO 36297 506 14 see see VB 36297 506 15 not not RB 36297 506 16 only only RB 36297 506 17 _ _ NNP 36297 506 18 light light NN 36297 506 19 _ _ NNP 36297 506 20 but but CC 36297 506 21 _ _ NNP 36297 506 22 objects object VBZ 36297 506 23 _ _ NNP 36297 506 24 . . . 36297 507 1 As as IN 36297 507 2 we -PRON- PRP 36297 507 3 go go VBP 36297 507 4 up up IN 36297 507 5 the the DT 36297 507 6 scale scale NN 36297 507 7 of of IN 36297 507 8 vertebrate vertebrate NN 36297 507 9 animals animal NNS 36297 507 10 we -PRON- PRP 36297 507 11 find find VBP 36297 507 12 that that IN 36297 507 13 there there EX 36297 507 14 is be VBZ 36297 507 15 a a DT 36297 507 16 gradual gradual JJ 36297 507 17 change change NN 36297 507 18 of of IN 36297 507 19 the the DT 36297 507 20 position position NN 36297 507 21 of of IN 36297 507 22 the the DT 36297 507 23 eyes eye NNS 36297 507 24 from from IN 36297 507 25 the the DT 36297 507 26 sides side NNS 36297 507 27 to to IN 36297 507 28 the the DT 36297 507 29 front front NN 36297 507 30 of of IN 36297 507 31 the the DT 36297 507 32 head head NN 36297 507 33 and and CC 36297 507 34 a a DT 36297 507 35 change change NN 36297 507 36 of of IN 36297 507 37 the the DT 36297 507 38 inclination inclination NN 36297 507 39 of of IN 36297 507 40 the the DT 36297 507 41 optical optical JJ 36297 507 42 axes axis NNS 36297 507 43 of of IN 36297 507 44 the the DT 36297 507 45 two two CD 36297 507 46 eyes eye NNS 36297 507 47 from from IN 36297 507 48 180 180 CD 36297 507 49 degrees degree NNS 36297 507 50 to to IN 36297 507 51 parallel parallel VB 36297 507 52 . . . 36297 508 1 There there EX 36297 508 2 is be VBZ 36297 508 3 also also RB 36297 508 4 evident evident JJ 36297 508 5 a a DT 36297 508 6 gradual gradual JJ 36297 508 7 increase increase NN 36297 508 8 in in IN 36297 508 9 the the DT 36297 508 10 fineness fineness NN 36297 508 11 of of IN 36297 508 12 the the DT 36297 508 13 bacillary bacillary JJ 36297 508 14 layer layer NN 36297 508 15 of of IN 36297 508 16 the the DT 36297 508 17 retina retina NN 36297 508 18 from from IN 36297 508 19 the the DT 36297 508 20 margins margin NNS 36297 508 21 toward toward IN 36297 508 22 the the DT 36297 508 23 center center NN 36297 508 24 , , , 36297 508 25 and and CC 36297 508 26 , , , 36297 508 27 therefore therefore RB 36297 508 28 , , , 36297 508 29 an an DT 36297 508 30 increasing increase VBG 36297 508 31 accuracy accuracy NN 36297 508 32 in in IN 36297 508 33 the the DT 36297 508 34 perception perception NN 36297 508 35 of of IN 36297 508 36 form form NN 36297 508 37 . . . 36297 509 1 This this DT 36297 509 2 finally finally RB 36297 509 3 results result VBZ 36297 509 4 in in IN 36297 509 5 a a DT 36297 509 6 highly highly RB 36297 509 7 organized organize VBN 36297 509 8 central central JJ 36297 509 9 spot spot NN 36297 509 10 or or CC 36297 509 11 fovea fovea NN 36297 509 12 which which WDT 36297 509 13 is be VBZ 36297 509 14 possessed possess VBN 36297 509 15 only only RB 36297 509 16 by by IN 36297 509 17 man man NN 36297 509 18 and and CC 36297 509 19 the the DT 36297 509 20 higher high JJR 36297 509 21 monkeys monkey NNS 36297 509 22 . . . 36297 510 1 Proceeding proceed VBG 36297 510 2 up up RP 36297 510 3 the the DT 36297 510 4 scale scale NN 36297 510 5 we -PRON- PRP 36297 510 6 also also RB 36297 510 7 find find VBP 36297 510 8 an an DT 36297 510 9 increasing increase VBG 36297 510 10 ability ability NN 36297 510 11 to to TO 36297 510 12 converge converge VB 36297 510 13 the the DT 36297 510 14 optic optic JJ 36297 510 15 axes axis NNS 36297 510 16 on on IN 36297 510 17 a a DT 36297 510 18 near near JJ 36297 510 19 point point NN 36297 510 20 so so IN 36297 510 21 that that IN 36297 510 22 the the DT 36297 510 23 images image NNS 36297 510 24 of of IN 36297 510 25 the the DT 36297 510 26 point point NN 36297 510 27 may may MD 36297 510 28 coincide coincide VB 36297 510 29 with with IN 36297 510 30 the the DT 36297 510 31 central central JJ 36297 510 32 spots spot NNS 36297 510 33 of of IN 36297 510 34 both both DT 36297 510 35 retinas retina NNS 36297 510 36 . . . 36297 511 1 These these DT 36297 511 2 changes change NNS 36297 511 3 and and CC 36297 511 4 others other NNS 36297 511 5 are be VBP 36297 511 6 closely closely RB 36297 511 7 associated associate VBN 36297 511 8 with with IN 36297 511 9 each each DT 36297 511 10 other other JJ 36297 511 11 and and CC 36297 511 12 especially especially RB 36297 511 13 with with IN 36297 511 14 the the DT 36297 511 15 development development NN 36297 511 16 of of IN 36297 511 17 the the DT 36297 511 18 higher high JJR 36297 511 19 faculties faculty NNS 36297 511 20 of of IN 36297 511 21 the the DT 36297 511 22 mind mind NN 36297 511 23 . . . 36297 512 1 Binocular binocular JJ 36297 512 2 vision vision NN 36297 512 3 in in IN 36297 512 4 man man NN 36297 512 5 and and CC 36297 512 6 in in IN 36297 512 7 the the DT 36297 512 8 higher high JJR 36297 512 9 animals animal NNS 36297 512 10 is be VBZ 36297 512 11 the the DT 36297 512 12 last last JJ 36297 512 13 result result NN 36297 512 14 of of IN 36297 512 15 the the DT 36297 512 16 gradual gradual JJ 36297 512 17 improvement improvement NN 36297 512 18 of of IN 36297 512 19 the the DT 36297 512 20 most most RBS 36297 512 21 refined refined JJ 36297 512 22 sense sense NN 36297 512 23 - - HYPH 36297 512 24 organ organ NN 36297 512 25 , , , 36297 512 26 adapting adapt VBG 36297 512 27 it -PRON- PRP 36297 512 28 to to TO 36297 512 29 meet meet VB 36297 512 30 the the DT 36297 512 31 requirements requirement NNS 36297 512 32 of of IN 36297 512 33 highly highly RB 36297 512 34 complex complex JJ 36297 512 35 organisms organism NNS 36297 512 36 . . . 36297 513 1 It -PRON- PRP 36297 513 2 can can MD 36297 513 3 not not RB 36297 513 4 exist exist VB 36297 513 5 in in IN 36297 513 6 some some DT 36297 513 7 animals animal NNS 36297 513 8 , , , 36297 513 9 such such JJ 36297 513 10 as as IN 36297 513 11 birds bird NNS 36297 513 12 and and CC 36297 513 13 fishes fish NNS 36297 513 14 , , , 36297 513 15 because because IN 36297 513 16 they -PRON- PRP 36297 513 17 can can MD 36297 513 18 not not RB 36297 513 19 converge converge VB 36297 513 20 their -PRON- PRP$ 36297 513 21 two two CD 36297 513 22 optical optical JJ 36297 513 23 axes axis NNS 36297 513 24 upon upon IN 36297 513 25 a a DT 36297 513 26 near near JJ 36297 513 27 point point NN 36297 513 28 . . . 36297 514 1 When when WRB 36297 514 2 a a DT 36297 514 3 chicken chicken NN 36297 514 4 wishes wish VBZ 36297 514 5 to to TO 36297 514 6 look look VB 36297 514 7 intently intently RB 36297 514 8 at at IN 36297 514 9 an an DT 36297 514 10 object object NN 36297 514 11 it -PRON- PRP 36297 514 12 turns turn VBZ 36297 514 13 its -PRON- PRP$ 36297 514 14 head head NN 36297 514 15 and and CC 36297 514 16 looks look VBZ 36297 514 17 with with IN 36297 514 18 one one CD 36297 514 19 eye eye NN 36297 514 20 . . . 36297 515 1 Such such PDT 36297 515 2 an an DT 36297 515 3 animal animal NN 36297 515 4 sees see VBZ 36297 515 5 with with IN 36297 515 6 two two CD 36297 515 7 eyes eye NNS 36297 515 8 independently independently RB 36297 515 9 and and CC 36297 515 10 possibly possibly RB 36297 515 11 moves move VBZ 36297 515 12 them -PRON- PRP 36297 515 13 independently independently RB 36297 515 14 . . . 36297 516 1 The the DT 36297 516 2 normal normal JJ 36297 516 3 position position NN 36297 516 4 of of IN 36297 516 5 the the DT 36297 516 6 axes axis NNS 36297 516 7 of of IN 36297 516 8 human human JJ 36297 516 9 eyes eye NNS 36297 516 10 is be VBZ 36297 516 11 convergent convergent NN 36297 516 12 or or CC 36297 516 13 parallel parallel NN 36297 516 14 but but CC 36297 516 15 it -PRON- PRP 36297 516 16 is be VBZ 36297 516 17 possible possible JJ 36297 516 18 to to TO 36297 516 19 diverge diverge VB 36297 516 20 the the DT 36297 516 21 axes axis NNS 36297 516 22 . . . 36297 517 1 In in IN 36297 517 2 fact fact NN 36297 517 3 , , , 36297 517 4 with with IN 36297 517 5 practice practice NN 36297 517 6 it -PRON- PRP 36297 517 7 is be VBZ 36297 517 8 possible possible JJ 36297 517 9 to to TO 36297 517 10 diverge diverge VB 36297 517 11 the the DT 36297 517 12 axes axis NNS 36297 517 13 sufficiently sufficiently RB 36297 517 14 to to TO 36297 517 15 look look VB 36297 517 16 at at IN 36297 517 17 a a DT 36297 517 18 point point NN 36297 517 19 near near IN 36297 517 20 the the DT 36297 517 21 back back NN 36297 517 22 of of IN 36297 517 23 the the DT 36297 517 24 head head NN 36297 517 25 , , , 36297 517 26 although although IN 36297 517 27 , , , 36297 517 28 of of IN 36297 517 29 course course NN 36297 517 30 , , , 36297 517 31 we -PRON- PRP 36297 517 32 do do VBP 36297 517 33 not not RB 36297 517 34 see see VB 36297 517 35 the the DT 36297 517 36 point point NN 36297 517 37 . . . 36297 518 1 The the DT 36297 518 2 movement movement NN 36297 518 3 of of IN 36297 518 4 the the DT 36297 518 5 eyes eye NNS 36297 518 6 is be VBZ 36297 518 7 rather rather RB 36297 518 8 complex complex JJ 36297 518 9 . . . 36297 519 1 When when WRB 36297 519 2 they -PRON- PRP 36297 519 3 move move VBP 36297 519 4 together together RB 36297 519 5 to to IN 36297 519 6 one one CD 36297 519 7 side side NN 36297 519 8 or or CC 36297 519 9 the the DT 36297 519 10 other other JJ 36297 519 11 or or CC 36297 519 12 up up RB 36297 519 13 and and CC 36297 519 14 down down RB 36297 519 15 in in IN 36297 519 16 a a DT 36297 519 17 vertical vertical JJ 36297 519 18 plane plane NN 36297 519 19 there there EX 36297 519 20 is be VBZ 36297 519 21 no no DT 36297 519 22 rotation rotation NN 36297 519 23 of of IN 36297 519 24 the the DT 36297 519 25 optical optical JJ 36297 519 26 axes axis NNS 36297 519 27 ; ; : 36297 519 28 that that RB 36297 519 29 is is RB 36297 519 30 , , , 36297 519 31 no no DT 36297 519 32 torsion torsion NN 36297 519 33 . . . 36297 520 1 When when WRB 36297 520 2 the the DT 36297 520 3 visual visual JJ 36297 520 4 plane plane NN 36297 520 5 is be VBZ 36297 520 6 elevated elevated JJ 36297 520 7 and and CC 36297 520 8 the the DT 36297 520 9 eyes eye NNS 36297 520 10 move move VBP 36297 520 11 to to IN 36297 520 12 the the DT 36297 520 13 right right NN 36297 520 14 they -PRON- PRP 36297 520 15 rotate rotate VBP 36297 520 16 to to IN 36297 520 17 the the DT 36297 520 18 right right NN 36297 520 19 ; ; : 36297 520 20 when when WRB 36297 520 21 they -PRON- PRP 36297 520 22 move move VBP 36297 520 23 to to IN 36297 520 24 the the DT 36297 520 25 left left NN 36297 520 26 they -PRON- PRP 36297 520 27 rotate rotate VBP 36297 520 28 to to IN 36297 520 29 the the DT 36297 520 30 left left NN 36297 520 31 . . . 36297 521 1 When when WRB 36297 521 2 the the DT 36297 521 3 visual visual JJ 36297 521 4 plane plane NN 36297 521 5 is be VBZ 36297 521 6 depressed depressed JJ 36297 521 7 and and CC 36297 521 8 the the DT 36297 521 9 eyes eye NNS 36297 521 10 move move VBP 36297 521 11 to to IN 36297 521 12 the the DT 36297 521 13 right right NN 36297 521 14 they -PRON- PRP 36297 521 15 rotate rotate VBP 36297 521 16 to to IN 36297 521 17 the the DT 36297 521 18 left left NN 36297 521 19 ; ; : 36297 521 20 when when WRB 36297 521 21 they -PRON- PRP 36297 521 22 move move VBP 36297 521 23 to to IN 36297 521 24 the the DT 36297 521 25 left left NN 36297 521 26 they -PRON- PRP 36297 521 27 rotate rotate VBP 36297 521 28 to to IN 36297 521 29 the the DT 36297 521 30 right right NN 36297 521 31 . . . 36297 522 1 Through through IN 36297 522 2 experience experience NN 36297 522 3 we -PRON- PRP 36297 522 4 unconsciously unconsciously RB 36297 522 5 evaluate evaluate VBP 36297 522 6 the the DT 36297 522 7 muscular muscular JJ 36297 522 8 stresses stress NNS 36297 522 9 , , , 36297 522 10 efforts effort NNS 36297 522 11 , , , 36297 522 12 and and CC 36297 522 13 movements movement NNS 36297 522 14 accompanying accompany VBG 36297 522 15 the the DT 36297 522 16 motion motion NN 36297 522 17 of of IN 36297 522 18 the the DT 36297 522 19 eyes eye NNS 36297 522 20 and and CC 36297 522 21 thereby thereby RB 36297 522 22 interpret interpret VB 36297 522 23 much much JJ 36297 522 24 through through IN 36297 522 25 visual visual JJ 36297 522 26 perception perception NN 36297 522 27 in in IN 36297 522 28 regard regard NN 36297 522 29 to to IN 36297 522 30 such such JJ 36297 522 31 aspects aspect NNS 36297 522 32 of of IN 36297 522 33 the the DT 36297 522 34 external external JJ 36297 522 35 world world NN 36297 522 36 as as IN 36297 522 37 size size NN 36297 522 38 , , , 36297 522 39 shape shape NN 36297 522 40 , , , 36297 522 41 and and CC 36297 522 42 distance distance NN 36297 522 43 of of IN 36297 522 44 objects object NNS 36297 522 45 . . . 36297 523 1 Even even RB 36297 523 2 this this DT 36297 523 3 brief brief JJ 36297 523 4 glimpse glimpse NN 36297 523 5 of of IN 36297 523 6 the the DT 36297 523 7 principal principal JJ 36297 523 8 movements movement NNS 36297 523 9 of of IN 36297 523 10 the the DT 36297 523 11 eyes eye NNS 36297 523 12 indicates indicate VBZ 36297 523 13 a a DT 36297 523 14 complexity complexity NN 36297 523 15 which which WDT 36297 523 16 suggests suggest VBZ 36297 523 17 the the DT 36297 523 18 intricacy intricacy NN 36297 523 19 of of IN 36297 523 20 the the DT 36297 523 21 explanations explanation NNS 36297 523 22 of of IN 36297 523 23 certain certain JJ 36297 523 24 visual visual JJ 36297 523 25 phenomena phenomenon NNS 36297 523 26 . . . 36297 524 1 At at IN 36297 524 2 this this DT 36297 524 3 point point NN 36297 524 4 it -PRON- PRP 36297 524 5 appears appear VBZ 36297 524 6 advantageous advantageous JJ 36297 524 7 to to TO 36297 524 8 set set VB 36297 524 9 down down RP 36297 524 10 the the DT 36297 524 11 principal principal JJ 36297 524 12 modes mode NNS 36297 524 13 by by IN 36297 524 14 which which WDT 36297 524 15 we -PRON- PRP 36297 524 16 perceive perceive VBP 36297 524 17 the the DT 36297 524 18 third third JJ 36297 524 19 dimension dimension NN 36297 524 20 of of IN 36297 524 21 space space NN 36297 524 22 and and CC 36297 524 23 of of IN 36297 524 24 objects object NNS 36297 524 25 and and CC 36297 524 26 other other JJ 36297 524 27 aspects aspect NNS 36297 524 28 of of IN 36297 524 29 the the DT 36297 524 30 external external JJ 36297 524 31 world world NN 36297 524 32 . . . 36297 525 1 They -PRON- PRP 36297 525 2 are be VBP 36297 525 3 as as IN 36297 525 4 follows follow VBZ 36297 525 5 : : : 36297 525 6 ( ( -LRB- 36297 525 7 1 1 LS 36297 525 8 ) ) -RRB- 36297 525 9 extent extent NN 36297 525 10 ; ; : 36297 525 11 ( ( -LRB- 36297 525 12 2 2 LS 36297 525 13 ) ) -RRB- 36297 525 14 clearness clearness NN 36297 525 15 of of IN 36297 525 16 brightness brightness NN 36297 525 17 and and CC 36297 525 18 color color NN 36297 525 19 as as IN 36297 525 20 affected affect VBN 36297 525 21 by by IN 36297 525 22 distance distance NN 36297 525 23 ; ; , 36297 525 24 ( ( -LRB- 36297 525 25 3 3 LS 36297 525 26 ) ) -RRB- 36297 525 27 interference interference NN 36297 525 28 of of IN 36297 525 29 near near JJ 36297 525 30 objects object NNS 36297 525 31 with with IN 36297 525 32 those those DT 36297 525 33 more more RBR 36297 525 34 distant distant JJ 36297 525 35 ; ; : 36297 525 36 ( ( -LRB- 36297 525 37 4 4 LS 36297 525 38 ) ) -RRB- 36297 525 39 elevation elevation NN 36297 525 40 of of IN 36297 525 41 objects object NNS 36297 525 42 ; ; , 36297 525 43 ( ( -LRB- 36297 525 44 5 5 LS 36297 525 45 ) ) -RRB- 36297 525 46 variation variation NN 36297 525 47 of of IN 36297 525 48 light light NN 36297 525 49 and and CC 36297 525 50 shade shade NN 36297 525 51 on on IN 36297 525 52 objects object NNS 36297 525 53 ; ; : 36297 525 54 ( ( -LRB- 36297 525 55 6 6 LS 36297 525 56 ) ) -RRB- 36297 525 57 cast cast NN 36297 525 58 shadows shadow NNS 36297 525 59 ; ; : 36297 525 60 ( ( -LRB- 36297 525 61 7 7 LS 36297 525 62 ) ) -RRB- 36297 525 63 perspective perspective NN 36297 525 64 ; ; : 36297 525 65 ( ( -LRB- 36297 525 66 8) 8) CD 36297 525 67 variation variation NN 36297 525 68 of of IN 36297 525 69 the the DT 36297 525 70 visor visor NN 36297 525 71 angle angle NN 36297 525 72 in in IN 36297 525 73 proportion proportion NN 36297 525 74 to to IN 36297 525 75 distance distance NN 36297 525 76 ; ; : 36297 525 77 ( ( -LRB- 36297 525 78 9 9 LS 36297 525 79 ) ) -RRB- 36297 525 80 muscular muscular JJ 36297 525 81 effort effort NN 36297 525 82 attending attend VBG 36297 525 83 accommodation accommodation NN 36297 525 84 of of IN 36297 525 85 the the DT 36297 525 86 eye eye NN 36297 525 87 ; ; : 36297 525 88 ( ( -LRB- 36297 525 89 10 10 LS 36297 525 90 ) ) -RRB- 36297 525 91 stereoscopic stereoscopic JJ 36297 525 92 vision vision NN 36297 525 93 ; ; , 36297 525 94 ( ( -LRB- 36297 525 95 11 11 CD 36297 525 96 ) ) -RRB- 36297 525 97 muscular muscular JJ 36297 525 98 effort effort NN 36297 525 99 attending attend VBG 36297 525 100 convergence convergence NN 36297 525 101 of of IN 36297 525 102 the the DT 36297 525 103 axes axis NNS 36297 525 104 of of IN 36297 525 105 the the DT 36297 525 106 eyes eye NNS 36297 525 107 . . . 36297 526 1 It -PRON- PRP 36297 526 2 will will MD 36297 526 3 be be VB 36297 526 4 recognized recognize VBN 36297 526 5 that that IN 36297 526 6 only only RB 36297 526 7 the the DT 36297 526 8 last last JJ 36297 526 9 two two CD 36297 526 10 are be VBP 36297 526 11 necessarily necessarily RB 36297 526 12 concerned concern VBN 36297 526 13 with with IN 36297 526 14 binocular binocular JJ 36297 526 15 vision vision NN 36297 526 16 . . . 36297 527 1 These these DT 36297 527 2 varieties variety NNS 36297 527 3 of of IN 36297 527 4 experiences experience NNS 36297 527 5 may may MD 36297 527 6 be be VB 36297 527 7 combined combine VBN 36297 527 8 in in IN 36297 527 9 almost almost RB 36297 527 10 an an DT 36297 527 11 infinite infinite JJ 36297 527 12 variety variety NN 36297 527 13 of of IN 36297 527 14 proportions proportion NNS 36297 527 15 . . . 36297 528 1 Wundt Wundt NNP 36297 528 2 in in IN 36297 528 3 his -PRON- PRP$ 36297 528 4 attempt attempt NN 36297 528 5 to to TO 36297 528 6 explain explain VB 36297 528 7 visual visual JJ 36297 528 8 perception perception NN 36297 528 9 considered consider VBD 36297 528 10 chiefly chiefly RB 36297 528 11 three three CD 36297 528 12 factors factor NNS 36297 528 13 : : : 36297 528 14 ( ( -LRB- 36297 528 15 1 1 LS 36297 528 16 ) ) -RRB- 36297 528 17 the the DT 36297 528 18 retinal retinal JJ 36297 528 19 image image NN 36297 528 20 of of IN 36297 528 21 the the DT 36297 528 22 eye eye NN 36297 528 23 at at IN 36297 528 24 rest rest NN 36297 528 25 ; ; , 36297 528 26 ( ( -LRB- 36297 528 27 2 2 LS 36297 528 28 ) ) -RRB- 36297 528 29 the the DT 36297 528 30 influence influence NN 36297 528 31 of of IN 36297 528 32 the the DT 36297 528 33 movements movement NNS 36297 528 34 of of IN 36297 528 35 one one CD 36297 528 36 eye eye NN 36297 528 37 ; ; : 36297 528 38 and and CC 36297 528 39 , , , 36297 528 40 ( ( -LRB- 36297 528 41 3 3 LS 36297 528 42 ) ) -RRB- 36297 528 43 the the DT 36297 528 44 additional additional JJ 36297 528 45 data datum NNS 36297 528 46 furnished furnish VBN 36297 528 47 by by IN 36297 528 48 the the DT 36297 528 49 two two CD 36297 528 50 eyes eye NNS 36297 528 51 functioning function VBG 36297 528 52 together together RB 36297 528 53 . . . 36297 529 1 There there EX 36297 529 2 are be VBP 36297 529 3 three three CD 36297 529 4 fields field NNS 36297 529 5 of of IN 36297 529 6 vision vision NN 36297 529 7 corresponding correspond VBG 36297 529 8 to to IN 36297 529 9 the the DT 36297 529 10 foregoing foregoing NN 36297 529 11 . . . 36297 530 1 These these DT 36297 530 2 are be VBP 36297 530 3 the the DT 36297 530 4 retinal retinal JJ 36297 530 5 field field NN 36297 530 6 of of IN 36297 530 7 vision vision NN 36297 530 8 , , , 36297 530 9 the the DT 36297 530 10 monocular monocular JJ 36297 530 11 field field NN 36297 530 12 , , , 36297 530 13 and and CC 36297 530 14 the the DT 36297 530 15 binocular binocular JJ 36297 530 16 field field NN 36297 530 17 . . . 36297 531 1 The the DT 36297 531 2 retinal retinal JJ 36297 531 3 field field NN 36297 531 4 of of IN 36297 531 5 vision vision NN 36297 531 6 is be VBZ 36297 531 7 that that DT 36297 531 8 of of IN 36297 531 9 an an DT 36297 531 10 eye eye NN 36297 531 11 at at IN 36297 531 12 rest rest NN 36297 531 13 as as IN 36297 531 14 compared compare VBN 36297 531 15 with with IN 36297 531 16 the the DT 36297 531 17 monocular monocular JJ 36297 531 18 field field NN 36297 531 19 , , , 36297 531 20 which which WDT 36297 531 21 is be VBZ 36297 531 22 all all DT 36297 531 23 that that WDT 36297 531 24 can can MD 36297 531 25 be be VB 36297 531 26 seen see VBN 36297 531 27 with with IN 36297 531 28 one one CD 36297 531 29 eye eye NN 36297 531 30 in in IN 36297 531 31 its -PRON- PRP$ 36297 531 32 entire entire JJ 36297 531 33 range range NN 36297 531 34 of of IN 36297 531 35 movement movement NN 36297 531 36 and and CC 36297 531 37 therefore therefore RB 36297 531 38 of of IN 36297 531 39 experience experience NN 36297 531 40 . . . 36297 532 1 The the DT 36297 532 2 retinal retinal JJ 36297 532 3 field field NN 36297 532 4 has have VBZ 36297 532 5 no no DT 36297 532 6 clearly clearly RB 36297 532 7 defined define VBN 36297 532 8 boundaries boundary NNS 36297 532 9 because because IN 36297 532 10 it -PRON- PRP 36297 532 11 finally finally RB 36297 532 12 fades fade VBZ 36297 532 13 at at IN 36297 532 14 its -PRON- PRP$ 36297 532 15 indefinite indefinite JJ 36297 532 16 periphery periphery NN 36297 532 17 into into IN 36297 532 18 a a DT 36297 532 19 region region NN 36297 532 20 where where WRB 36297 532 21 sensation sensation NN 36297 532 22 ceases cease VBZ 36297 532 23 . . . 36297 533 1 It -PRON- PRP 36297 533 2 might may MD 36297 533 3 be be VB 36297 533 4 tiresome tiresome JJ 36297 533 5 to to TO 36297 533 6 follow follow VB 36297 533 7 detailed detailed JJ 36297 533 8 analyses analysis NNS 36297 533 9 of of IN 36297 533 10 the the DT 36297 533 11 many many JJ 36297 533 12 modes mode NNS 36297 533 13 by by IN 36297 533 14 which which WDT 36297 533 15 visual visual JJ 36297 533 16 perception perception NN 36297 533 17 is be VBZ 36297 533 18 attained attain VBN 36297 533 19 , , , 36297 533 20 so so RB 36297 533 21 only only RB 36297 533 22 a a DT 36297 533 23 few few JJ 36297 533 24 generalizations generalization NNS 36297 533 25 will will MD 36297 533 26 be be VB 36297 533 27 presented present VBN 36297 533 28 . . . 36297 534 1 For for IN 36297 534 2 every every DT 36297 534 3 voluntary voluntary JJ 36297 534 4 act act NN 36297 534 5 of of IN 36297 534 6 sight sight NN 36297 534 7 there there EX 36297 534 8 are be VBP 36297 534 9 two two CD 36297 534 10 adjustments adjustment NNS 36297 534 11 of of IN 36297 534 12 the the DT 36297 534 13 eyes eye NNS 36297 534 14 , , , 36297 534 15 namely namely RB 36297 534 16 , , , 36297 534 17 focal focal JJ 36297 534 18 and and CC 36297 534 19 axial axial JJ 36297 534 20 . . . 36297 535 1 In in IN 36297 535 2 the the DT 36297 535 3 former former JJ 36297 535 4 case case NN 36297 535 5 the the DT 36297 535 6 ciliary ciliary JJ 36297 535 7 muscle muscle NN 36297 535 8 adjusts adjust VBZ 36297 535 9 the the DT 36297 535 10 lens lens NN 36297 535 11 in in IN 36297 535 12 order order NN 36297 535 13 to to TO 36297 535 14 produce produce VB 36297 535 15 a a DT 36297 535 16 defined define VBN 36297 535 17 image image NN 36297 535 18 upon upon IN 36297 535 19 the the DT 36297 535 20 retina retina NNP 36297 535 21 . . . 36297 536 1 In in IN 36297 536 2 axial axial JJ 36297 536 3 adjustments adjustment NNS 36297 536 4 the the DT 36297 536 5 two two CD 36297 536 6 eyes eye NNS 36297 536 7 are be VBP 36297 536 8 turned turn VBN 36297 536 9 by by IN 36297 536 10 certain certain JJ 36297 536 11 muscles muscle NNS 36297 536 12 so so IN 36297 536 13 that that IN 36297 536 14 their -PRON- PRP$ 36297 536 15 axes axis NNS 36297 536 16 meet meet VBP 36297 536 17 on on IN 36297 536 18 the the DT 36297 536 19 object object NN 36297 536 20 looked look VBD 36297 536 21 at at IN 36297 536 22 and and CC 36297 536 23 the the DT 36297 536 24 images image NNS 36297 536 25 of of IN 36297 536 26 the the DT 36297 536 27 object object NN 36297 536 28 fall fall NN 36297 536 29 on on IN 36297 536 30 the the DT 36297 536 31 central central JJ 36297 536 32 - - HYPH 36297 536 33 spots spot NNS 36297 536 34 of of IN 36297 536 35 the the DT 36297 536 36 retina retina NNP 36297 536 37 . . . 36297 537 1 These these DT 36297 537 2 take take VBP 36297 537 3 place place NN 36297 537 4 together together RB 36297 537 5 without without IN 36297 537 6 distinct distinct JJ 36297 537 7 volition volition NN 36297 537 8 for for IN 36297 537 9 each each DT 36297 537 10 but but CC 36297 537 11 by by IN 36297 537 12 the the DT 36297 537 13 single single JJ 36297 537 14 voluntary voluntary JJ 36297 537 15 act act NN 36297 537 16 of of IN 36297 537 17 _ _ NNP 36297 537 18 looking look VBG 36297 537 19 _ _ NNP 36297 537 20 . . . 36297 538 1 Through through IN 36297 538 2 experience experience NN 36297 538 3 the the DT 36297 538 4 intellect intellect NN 36297 538 5 has have VBZ 36297 538 6 acquired acquire VBN 36297 538 7 a a DT 36297 538 8 wonderful wonderful JJ 36297 538 9 capacity capacity NN 36297 538 10 to to TO 36297 538 11 interpret interpret VB 36297 538 12 such such JJ 36297 538 13 factors factor NNS 36297 538 14 as as IN 36297 538 15 size size NN 36297 538 16 , , , 36297 538 17 form form NN 36297 538 18 , , , 36297 538 19 and and CC 36297 538 20 distance distance NN 36297 538 21 in in IN 36297 538 22 terms term NNS 36297 538 23 of of IN 36297 538 24 the the DT 36297 538 25 muscular muscular JJ 36297 538 26 movements movement NNS 36297 538 27 in in IN 36297 538 28 general general JJ 36297 538 29 without without IN 36297 538 30 the the DT 36297 538 31 observer observer NN 36297 538 32 being be VBG 36297 538 33 conscious conscious JJ 36297 538 34 of of IN 36297 538 35 such such JJ 36297 538 36 interpretations interpretation NNS 36297 538 37 . . . 36297 539 1 Binocular binocular JJ 36297 539 2 vision vision NN 36297 539 3 is be VBZ 36297 539 4 easily easily RB 36297 539 5 recognized recognize VBN 36297 539 6 by by IN 36297 539 7 holding hold VBG 36297 539 8 a a DT 36297 539 9 finger finger NN 36297 539 10 before before IN 36297 539 11 the the DT 36297 539 12 eyes eye NNS 36297 539 13 and and CC 36297 539 14 looking look VBG 36297 539 15 at at IN 36297 539 16 a a DT 36297 539 17 point point NN 36297 539 18 beyond beyond IN 36297 539 19 it -PRON- PRP 36297 539 20 . . . 36297 540 1 The the DT 36297 540 2 result result NN 36297 540 3 is be VBZ 36297 540 4 two two CD 36297 540 5 apparently apparently RB 36297 540 6 transparent transparent JJ 36297 540 7 fingers finger NNS 36297 540 8 . . . 36297 541 1 An an DT 36297 541 2 object object NN 36297 541 3 is be VBZ 36297 541 4 seen see VBN 36297 541 5 single single JJ 36297 541 6 when when WRB 36297 541 7 the the DT 36297 541 8 two two CD 36297 541 9 retinal retinal JJ 36297 541 10 images image NNS 36297 541 11 fall fall VBP 36297 541 12 on on IN 36297 541 13 corresponding correspond VBG 36297 541 14 points point NNS 36297 541 15 . . . 36297 542 1 Direction direction NN 36297 542 2 is be VBZ 36297 542 3 a a DT 36297 542 4 primary primary JJ 36297 542 5 datum datum NN 36297 542 6 of of IN 36297 542 7 sense sense NN 36297 542 8 . . . 36297 543 1 The the DT 36297 543 2 property property NN 36297 543 3 of of IN 36297 543 4 corresponding correspond VBG 36297 543 5 points point NNS 36297 543 6 of of IN 36297 543 7 the the DT 36297 543 8 two two CD 36297 543 9 retinas retina NNS 36297 543 10 ( ( -LRB- 36297 543 11 binocular binocular JJ 36297 543 12 vision vision NN 36297 543 13 ) ) -RRB- 36297 543 14 and and CC 36297 543 15 consequently consequently RB 36297 543 16 of of IN 36297 543 17 identical identical JJ 36297 543 18 spatial spatial JJ 36297 543 19 points point NNS 36297 543 20 in in IN 36297 543 21 the the DT 36297 543 22 two two CD 36297 543 23 visual visual JJ 36297 543 24 fields field NNS 36297 543 25 is be VBZ 36297 543 26 not not RB 36297 543 27 so so RB 36297 543 28 simple simple JJ 36297 543 29 . . . 36297 544 1 It -PRON- PRP 36297 544 2 is be VBZ 36297 544 3 still still RB 36297 544 4 a a DT 36297 544 5 question question NN 36297 544 6 whether whether IN 36297 544 7 corresponding corresponding JJ 36297 544 8 points point NNS 36297 544 9 ( ( -LRB- 36297 544 10 that that RB 36297 544 11 is is RB 36297 544 12 , , , 36297 544 13 the the DT 36297 544 14 existence existence NN 36297 544 15 of of IN 36297 544 16 a a DT 36297 544 17 corresponding corresponding JJ 36297 544 18 point point NN 36297 544 19 in in IN 36297 544 20 one one CD 36297 544 21 retina retina NN 36297 544 22 for for IN 36297 544 23 each each DT 36297 544 24 point point NN 36297 544 25 in in IN 36297 544 26 the the DT 36297 544 27 other other JJ 36297 544 28 retina retina NNP 36297 544 29 ) ) -RRB- 36297 544 30 are be VBP 36297 544 31 innate innate JJ 36297 544 32 , , , 36297 544 33 instinctive instinctive JJ 36297 544 34 , , , 36297 544 35 and and CC 36297 544 36 are be VBP 36297 544 37 antecedent antecedent NN 36297 544 38 of of IN 36297 544 39 experience experience NN 36297 544 40 or or CC 36297 544 41 are be VBP 36297 544 42 " " `` 36297 544 43 paired pair VBN 36297 544 44 " " '' 36297 544 45 as as IN 36297 544 46 the the DT 36297 544 47 result result NN 36297 544 48 of of IN 36297 544 49 experience experience NN 36297 544 50 . . . 36297 545 1 The the DT 36297 545 2 one one CD 36297 545 3 view view NN 36297 545 4 results result VBZ 36297 545 5 in in IN 36297 545 6 the the DT 36297 545 7 _ _ NNP 36297 545 8 nativistic nativistic JJ 36297 545 9 _ _ NNP 36297 545 10 , , , 36297 545 11 the the DT 36297 545 12 other other JJ 36297 545 13 in in IN 36297 545 14 the the DT 36297 545 15 _ _ NNP 36297 545 16 empiristic empiristic JJ 36297 545 17 _ _ NNP 36297 545 18 theory theory NN 36297 545 19 . . . 36297 546 1 Inasmuch inasmuch IN 36297 546 2 as as IN 36297 546 3 some some DT 36297 546 4 scientists scientist NNS 36297 546 5 are be VBP 36297 546 6 arrayed array VBN 36297 546 7 on on IN 36297 546 8 one one CD 36297 546 9 side side NN 36297 546 10 and and CC 36297 546 11 some some DT 36297 546 12 on on IN 36297 546 13 the the DT 36297 546 14 other other JJ 36297 546 15 , , , 36297 546 16 it -PRON- PRP 36297 546 17 appears appear VBZ 36297 546 18 futile futile JJ 36297 546 19 to to TO 36297 546 20 dwell dwell VB 36297 546 21 further further RB 36297 546 22 upon upon IN 36297 546 23 this this DT 36297 546 24 aspect aspect NN 36297 546 25 . . . 36297 547 1 It -PRON- PRP 36297 547 2 must must MD 36297 547 3 suffice suffice VB 36297 547 4 to to IN 36297 547 5 state state VB 36297 547 6 that that IN 36297 547 7 binocular binocular JJ 36297 547 8 vision vision NN 36297 547 9 , , , 36297 547 10 which which WDT 36297 547 11 consists consist VBZ 36297 547 12 of of IN 36297 547 13 two two CD 36297 547 14 retinas retina NNS 36297 547 15 and and CC 36297 547 16 consequently consequently RB 36297 547 17 two two CD 36297 547 18 fields field NNS 36297 547 19 of of IN 36297 547 20 view view NN 36297 547 21 absolutely absolutely RB 36297 547 22 coördinated coördinate VBN 36297 547 23 in in IN 36297 547 24 some some DT 36297 547 25 manner manner NN 36297 547 26 in in IN 36297 547 27 the the DT 36297 547 28 brain brain NN 36297 547 29 , , , 36297 547 30 yields yield VBZ 36297 547 31 extensive extensive JJ 36297 547 32 information information NN 36297 547 33 concerning concern VBG 36297 547 34 space space NN 36297 547 35 and and CC 36297 547 36 its -PRON- PRP$ 36297 547 37 contents content NNS 36297 547 38 . . . 36297 548 1 After after IN 36297 548 2 noting note VBG 36297 548 3 after after IN 36297 548 4 - - HYPH 36297 548 5 images image NNS 36297 548 6 , , , 36297 548 7 motes mote NNS 36297 548 8 floating float VBG 36297 548 9 in in IN 36297 548 10 the the DT 36297 548 11 field field NN 36297 548 12 of of IN 36297 548 13 view view NN 36297 548 14 ( ( -LRB- 36297 548 15 caused cause VBN 36297 548 16 by by IN 36297 548 17 defects defect NNS 36297 548 18 in in IN 36297 548 19 the the DT 36297 548 20 eye eye NN 36297 548 21 - - HYPH 36297 548 22 media media NN 36297 548 23 ) ) -RRB- 36297 548 24 and and CC 36297 548 25 various various JJ 36297 548 26 other other JJ 36297 548 27 things thing NNS 36297 548 28 , , , 36297 548 29 it -PRON- PRP 36297 548 30 is be VBZ 36297 548 31 evident evident JJ 36297 548 32 that that IN 36297 548 33 what what WP 36297 548 34 we -PRON- PRP 36297 548 35 call call VBP 36297 548 36 the the DT 36297 548 37 field field NN 36297 548 38 of of IN 36297 548 39 view view NN 36297 548 40 is be VBZ 36297 548 41 the the DT 36297 548 42 external external JJ 36297 548 43 projection projection NN 36297 548 44 into into IN 36297 548 45 space space NN 36297 548 46 of of IN 36297 548 47 retinal retinal JJ 36297 548 48 states state NNS 36297 548 49 . . . 36297 549 1 All all PDT 36297 549 2 the the DT 36297 549 3 variations variation NNS 36297 549 4 of of IN 36297 549 5 the the DT 36297 549 6 latter latter JJ 36297 549 7 , , , 36297 549 8 such such JJ 36297 549 9 as as IN 36297 549 10 images image NNS 36297 549 11 and and CC 36297 549 12 shadows shadow NNS 36297 549 13 which which WDT 36297 549 14 are be VBP 36297 549 15 produced produce VBN 36297 549 16 in in IN 36297 549 17 the the DT 36297 549 18 external external JJ 36297 549 19 field field NN 36297 549 20 of of IN 36297 549 21 one one CD 36297 549 22 eye eye NN 36297 549 23 , , , 36297 549 24 are be VBP 36297 549 25 faithfully faithfully RB 36297 549 26 reproduced reproduce VBN 36297 549 27 in in IN 36297 549 28 the the DT 36297 549 29 external external JJ 36297 549 30 field field NN 36297 549 31 of of IN 36297 549 32 the the DT 36297 549 33 other other JJ 36297 549 34 eye eye NN 36297 549 35 . . . 36297 550 1 This this DT 36297 550 2 sense sense NN 36297 550 3 of of IN 36297 550 4 an an DT 36297 550 5 external external JJ 36297 550 6 visual visual JJ 36297 550 7 field field NN 36297 550 8 is be VBZ 36297 550 9 ineradicable ineradicable JJ 36297 550 10 . . . 36297 551 1 Even even RB 36297 551 2 when when WRB 36297 551 3 the the DT 36297 551 4 eyes eye NNS 36297 551 5 are be VBP 36297 551 6 closed close VBN 36297 551 7 the the DT 36297 551 8 external external JJ 36297 551 9 field field NN 36297 551 10 is be VBZ 36297 551 11 still still RB 36297 551 12 there there RB 36297 551 13 ; ; : 36297 551 14 the the DT 36297 551 15 imagination imagination NN 36297 551 16 or or CC 36297 551 17 intellect intellect NN 36297 551 18 projects project NNS 36297 551 19 it -PRON- PRP 36297 551 20 outward outward RB 36297 551 21 . . . 36297 552 1 Objects object NNS 36297 552 2 at at IN 36297 552 3 different different JJ 36297 552 4 distances distance NNS 36297 552 5 can can MD 36297 552 6 not not RB 36297 552 7 be be VB 36297 552 8 seen see VBN 36297 552 9 distinctly distinctly RB 36297 552 10 at at IN 36297 552 11 the the DT 36297 552 12 same same JJ 36297 552 13 time time NN 36297 552 14 but but CC 36297 552 15 by by IN 36297 552 16 interpreting interpret VBG 36297 552 17 the the DT 36297 552 18 eye eye NN 36297 552 19 - - HYPH 36297 552 20 movements movement NNS 36297 552 21 as as IN 36297 552 22 the the DT 36297 552 23 point point NN 36297 552 24 of of IN 36297 552 25 sight sight NN 36297 552 26 is be VBZ 36297 552 27 run run VBN 36297 552 28 backward backward RB 36297 552 29 and and CC 36297 552 30 forward forward RB 36297 552 31 ( ( -LRB- 36297 552 32 varying vary VBG 36297 552 33 convergence convergence NN 36297 552 34 of of IN 36297 552 35 the the DT 36297 552 36 axes axis NNS 36297 552 37 ) ) -RRB- 36297 552 38 the the DT 36297 552 39 intellect intellect NN 36297 552 40 practically practically RB 36297 552 41 automatically automatically RB 36297 552 42 appraises appraise VBZ 36297 552 43 the the DT 36297 552 44 size size NN 36297 552 45 , , , 36297 552 46 form form NN 36297 552 47 , , , 36297 552 48 and and CC 36297 552 49 distance distance NN 36297 552 50 of of IN 36297 552 51 each each DT 36297 552 52 object object NN 36297 552 53 . . . 36297 553 1 Obviously obviously RB 36297 553 2 , , , 36297 553 3 experience experience NN 36297 553 4 is be VBZ 36297 553 5 a a DT 36297 553 6 prominent prominent JJ 36297 553 7 factor factor NN 36297 553 8 . . . 36297 554 1 The the DT 36297 554 2 perception perception NN 36297 554 3 of of IN 36297 554 4 the the DT 36297 554 5 third third JJ 36297 554 6 dimension dimension NN 36297 554 7 , , , 36297 554 8 depth depth NN 36297 554 9 or or CC 36297 554 10 relative relative JJ 36297 554 11 distance distance NN 36297 554 12 , , , 36297 554 13 whether whether IN 36297 554 14 in in IN 36297 554 15 a a DT 36297 554 16 single single JJ 36297 554 17 object object NN 36297 554 18 or or CC 36297 554 19 a a DT 36297 554 20 group group NN 36297 554 21 of of IN 36297 554 22 objects object NNS 36297 554 23 , , , 36297 554 24 is be VBZ 36297 554 25 the the DT 36297 554 26 result result NN 36297 554 27 of of IN 36297 554 28 the the DT 36297 554 29 successive successive JJ 36297 554 30 combination combination NN 36297 554 31 of of IN 36297 554 32 the the DT 36297 554 33 different different JJ 36297 554 34 parts part NNS 36297 554 35 of of IN 36297 554 36 two two CD 36297 554 37 dissimilar dissimilar JJ 36297 554 38 images image NNS 36297 554 39 of of IN 36297 554 40 the the DT 36297 554 41 object object NN 36297 554 42 or or CC 36297 554 43 group group NN 36297 554 44 . . . 36297 555 1 As as IN 36297 555 2 already already RB 36297 555 3 stated state VBN 36297 555 4 , , , 36297 555 5 the the DT 36297 555 6 perception perception NN 36297 555 7 of of IN 36297 555 8 distance distance NN 36297 555 9 , , , 36297 555 10 size size NN 36297 555 11 , , , 36297 555 12 and and CC 36297 555 13 form form NN 36297 555 14 is be VBZ 36297 555 15 based base VBN 36297 555 16 partly partly RB 36297 555 17 upon upon IN 36297 555 18 monocular monocular JJ 36297 555 19 and and CC 36297 555 20 partly partly RB 36297 555 21 upon upon IN 36297 555 22 binocular binocular JJ 36297 555 23 vision vision NN 36297 555 24 , , , 36297 555 25 and and CC 36297 555 26 the the DT 36297 555 27 simple simple JJ 36297 555 28 elements element NNS 36297 555 29 upon upon IN 36297 555 30 which which WDT 36297 555 31 judgments judgment NNS 36297 555 32 of of IN 36297 555 33 these these DT 36297 555 34 are be VBP 36297 555 35 based base VBN 36297 555 36 are be VBP 36297 555 37 light light JJ 36297 555 38 , , , 36297 555 39 shade shade NN 36297 555 40 , , , 36297 555 41 color color NN 36297 555 42 , , , 36297 555 43 intensity intensity NN 36297 555 44 , , , 36297 555 45 and and CC 36297 555 46 direction direction NN 36297 555 47 . . . 36297 556 1 Although although IN 36297 556 2 the the DT 36297 556 3 interpretation interpretation NN 36297 556 4 of of IN 36297 556 5 muscular muscular JJ 36297 556 6 adjustments adjustment NNS 36297 556 7 plays play VBZ 36297 556 8 a a DT 36297 556 9 prominent prominent JJ 36297 556 10 part part NN 36297 556 11 in in IN 36297 556 12 the the DT 36297 556 13 formation formation NN 36297 556 14 of of IN 36297 556 15 judgments judgment NNS 36297 556 16 , , , 36297 556 17 the the DT 36297 556 18 influences influence NNS 36297 556 19 of of IN 36297 556 20 mathematical mathematical JJ 36297 556 21 perspective perspective NN 36297 556 22 , , , 36297 556 23 light light NN 36297 556 24 , , , 36297 556 25 shade shade NN 36297 556 26 , , , 36297 556 27 color color NN 36297 556 28 , , , 36297 556 29 and and CC 36297 556 30 intensity intensity NN 36297 556 31 are be VBP 36297 556 32 more more RBR 36297 556 33 direct direct JJ 36297 556 34 . . . 36297 557 1 Judgments judgment NNS 36297 557 2 based base VBN 36297 557 3 upon upon IN 36297 557 4 focal focal JJ 36297 557 5 adjustment adjustment NN 36297 557 6 ( ( -LRB- 36297 557 7 monocular monocular JJ 36297 557 8 ) ) -RRB- 36297 557 9 are be VBP 36297 557 10 fairly fairly RB 36297 557 11 accurate accurate JJ 36297 557 12 at at IN 36297 557 13 distances distance NNS 36297 557 14 from from IN 36297 557 15 five five CD 36297 557 16 inches inch NNS 36297 557 17 to to IN 36297 557 18 several several JJ 36297 557 19 yards yard NNS 36297 557 20 . . . 36297 558 1 Those those DT 36297 558 2 founded found VBN 36297 558 3 upon upon IN 36297 558 4 axial axial JJ 36297 558 5 adjustment adjustment NN 36297 558 6 ( ( -LRB- 36297 558 7 convergence convergence NN 36297 558 8 of of IN 36297 558 9 the the DT 36297 558 10 two two CD 36297 558 11 axes axis NNS 36297 558 12 in in IN 36297 558 13 binocular binocular JJ 36297 558 14 vision vision NN 36297 558 15 ) ) -RRB- 36297 558 16 are be VBP 36297 558 17 less less JJR 36297 558 18 in in IN 36297 558 19 error error NN 36297 558 20 than than IN 36297 558 21 the the DT 36297 558 22 preceding precede VBG 36297 558 23 ones one NNS 36297 558 24 . . . 36297 559 1 They -PRON- PRP 36297 559 2 are be VBP 36297 559 3 reliable reliable JJ 36297 559 4 to to IN 36297 559 5 a a DT 36297 559 6 distance distance NN 36297 559 7 of of IN 36297 559 8 about about IN 36297 559 9 1000 1000 CD 36297 559 10 feet foot NNS 36297 559 11 . . . 36297 560 1 Judgments judgment NNS 36297 560 2 involving involve VBG 36297 560 3 mathematical mathematical JJ 36297 560 4 perspective perspective NN 36297 560 5 are be VBP 36297 560 6 of of IN 36297 560 7 relatively relatively RB 36297 560 8 great great JJ 36297 560 9 accuracy accuracy NN 36297 560 10 without without IN 36297 560 11 limits limit NNS 36297 560 12 . . . 36297 561 1 Those those DT 36297 561 2 arrived arrive VBD 36297 561 3 at at IN 36297 561 4 by by IN 36297 561 5 interpreting interpret VBG 36297 561 6 aerial aerial JJ 36297 561 7 perspective perspective NN 36297 561 8 ( ( -LRB- 36297 561 9 haziness haziness NN 36297 561 10 of of IN 36297 561 11 atmosphere atmosphere NN 36297 561 12 , , , 36297 561 13 reduction reduction NN 36297 561 14 in in IN 36297 561 15 color color NN 36297 561 16 due due IN 36297 561 17 to to IN 36297 561 18 atmospheric atmospheric JJ 36297 561 19 absorption absorption NN 36297 561 20 , , , 36297 561 21 etc etc FW 36297 561 22 . . . 36297 561 23 ) ) -RRB- 36297 562 1 are be VBP 36297 562 2 merely merely RB 36297 562 3 estimates estimate NNS 36297 562 4 liable liable JJ 36297 562 5 to to IN 36297 562 6 large large JJ 36297 562 7 errors error NNS 36297 562 8 , , , 36297 562 9 the the DT 36297 562 10 accuracy accuracy NN 36297 562 11 depending depend VBG 36297 562 12 largely largely RB 36297 562 13 upon upon IN 36297 562 14 experience experience NN 36297 562 15 with with IN 36297 562 16 local local JJ 36297 562 17 conditions condition NNS 36297 562 18 . . . 36297 563 1 The the DT 36297 563 2 measuring measure VBG 36297 563 3 power power NN 36297 563 4 of of IN 36297 563 5 the the DT 36297 563 6 eye eye NN 36297 563 7 is be VBZ 36297 563 8 more more RBR 36297 563 9 liable liable JJ 36297 563 10 to to TO 36297 563 11 error error VB 36297 563 12 when when WRB 36297 563 13 the the DT 36297 563 14 distances distance NNS 36297 563 15 or or CC 36297 563 16 the the DT 36297 563 17 objects object NNS 36297 563 18 compared compare VBN 36297 563 19 lie lie VBP 36297 563 20 in in IN 36297 563 21 different different JJ 36297 563 22 directions direction NNS 36297 563 23 . . . 36297 564 1 A a DT 36297 564 2 special special JJ 36297 564 3 case case NN 36297 564 4 is be VBZ 36297 564 5 the the DT 36297 564 6 comparison comparison NN 36297 564 7 of of IN 36297 564 8 a a DT 36297 564 9 vertical vertical JJ 36297 564 10 distance distance NN 36297 564 11 with with IN 36297 564 12 a a DT 36297 564 13 horizontal horizontal JJ 36297 564 14 one one CD 36297 564 15 . . . 36297 565 1 It -PRON- PRP 36297 565 2 is be VBZ 36297 565 3 not not RB 36297 565 4 uncommon uncommon JJ 36297 565 5 to to TO 36297 565 6 estimate estimate VB 36297 565 7 a a DT 36297 565 8 vertical vertical JJ 36297 565 9 distance distance NN 36297 565 10 as as RB 36297 565 11 much much JJ 36297 565 12 as as IN 36297 565 13 25 25 CD 36297 565 14 per per NN 36297 565 15 cent cent NN 36297 565 16 greater great JJR 36297 565 17 than than IN 36297 565 18 an an DT 36297 565 19 actually actually RB 36297 565 20 equal equal JJ 36297 565 21 horizontal horizontal JJ 36297 565 22 distance distance NN 36297 565 23 . . . 36297 566 1 In in IN 36297 566 2 general general JJ 36297 566 3 , , , 36297 566 4 estimates estimate NNS 36297 566 5 of of IN 36297 566 6 direction direction NN 36297 566 7 and and CC 36297 566 8 distance distance NN 36297 566 9 are be VBP 36297 566 10 comparatively comparatively RB 36297 566 11 inaccurate inaccurate JJ 36297 566 12 when when WRB 36297 566 13 only only RB 36297 566 14 one one CD 36297 566 15 eye eye NN 36297 566 16 is be VBZ 36297 566 17 used use VBN 36297 566 18 although although IN 36297 566 19 a a DT 36297 566 20 one one CD 36297 566 21 - - HYPH 36297 566 22 eyed eyed JJ 36297 566 23 person person NN 36297 566 24 acquires acquire VBZ 36297 566 25 unusual unusual JJ 36297 566 26 ability ability NN 36297 566 27 through through IN 36297 566 28 a a DT 36297 566 29 keener keen JJR 36297 566 30 experience experience NN 36297 566 31 whetted whet VBN 36297 566 32 by by IN 36297 566 33 necessity necessity NN 36297 566 34 . . . 36297 567 1 A a DT 36297 567 2 vertical vertical JJ 36297 567 3 line line NN 36297 567 4 drawn draw VBN 36297 567 5 perpendicular perpendicular JJ 36297 567 6 to to IN 36297 567 7 a a DT 36297 567 8 horizontal horizontal JJ 36297 567 9 one one NN 36297 567 10 is be VBZ 36297 567 11 likely likely JJ 36297 567 12 to to TO 36297 567 13 appear appear VB 36297 567 14 bent bent JJ 36297 567 15 when when WRB 36297 567 16 viewed view VBN 36297 567 17 with with IN 36297 567 18 one one CD 36297 567 19 eye eye NN 36297 567 20 . . . 36297 568 1 Its -PRON- PRP$ 36297 568 2 apparent apparent JJ 36297 568 3 inclination inclination NN 36297 568 4 is be VBZ 36297 568 5 variable variable JJ 36297 568 6 but but CC 36297 568 7 has have VBZ 36297 568 8 been be VBN 36297 568 9 found find VBN 36297 568 10 to to TO 36297 568 11 vary vary VB 36297 568 12 from from IN 36297 568 13 one one CD 36297 568 14 to to TO 36297 568 15 three three CD 36297 568 16 degrees degree NNS 36297 568 17 . . . 36297 569 1 Monocular monocular JJ 36297 569 2 vision vision NN 36297 569 3 is be VBZ 36297 569 4 likely likely JJ 36297 569 5 to to TO 36297 569 6 cause cause VB 36297 569 7 straight straight JJ 36297 569 8 lines line NNS 36297 569 9 to to TO 36297 569 10 appear appear VB 36297 569 11 crooked crooked JJ 36297 569 12 , , , 36297 569 13 although although IN 36297 569 14 the the DT 36297 569 15 " " `` 36297 569 16 crookedness crookedness JJ 36297 569 17 " " '' 36297 569 18 may may MD 36297 569 19 seem seem VB 36297 569 20 to to TO 36297 569 21 be be VB 36297 569 22 more more RBR 36297 569 23 or or CC 36297 569 24 less less RBR 36297 569 25 unstable unstable JJ 36297 569 26 . . . 36297 570 1 The the DT 36297 570 2 error error NN 36297 570 3 in in IN 36297 570 4 the the DT 36297 570 5 estimate estimate NN 36297 570 6 of of IN 36297 570 7 size size NN 36297 570 8 is be VBZ 36297 570 9 in in IN 36297 570 10 reality reality NN 36297 570 11 an an DT 36297 570 12 error error NN 36297 570 13 in in IN 36297 570 14 the the DT 36297 570 15 estimation estimation NN 36297 570 16 of of IN 36297 570 17 distance distance NN 36297 570 18 except except IN 36297 570 19 in in IN 36297 570 20 those those DT 36297 570 21 cases case NNS 36297 570 22 where where WRB 36297 570 23 the the DT 36297 570 24 estimate estimate NN 36297 570 25 is be VBZ 36297 570 26 based base VBN 36297 570 27 directly directly RB 36297 570 28 upon upon IN 36297 570 29 a a DT 36297 570 30 comparison comparison NN 36297 570 31 with with IN 36297 570 32 an an DT 36297 570 33 object object NN 36297 570 34 of of IN 36297 570 35 supposedly supposedly RB 36297 570 36 known know VBN 36297 570 37 size size NN 36297 570 38 . . . 36297 571 1 An an DT 36297 571 2 amusing amusing JJ 36297 571 3 incident incident NN 36297 571 4 is be VBZ 36297 571 5 told tell VBN 36297 571 6 of of IN 36297 571 7 an an DT 36297 571 8 old old JJ 36297 571 9 negro negro NNS 36297 571 10 who who WP 36297 571 11 was be VBD 36297 571 12 hunting hunt VBG 36297 571 13 for for IN 36297 571 14 squirrels squirrel NNS 36297 571 15 . . . 36297 572 1 He -PRON- PRP 36297 572 2 shot shoot VBD 36297 572 3 several several JJ 36297 572 4 times time NNS 36297 572 5 at at IN 36297 572 6 what what WP 36297 572 7 he -PRON- PRP 36297 572 8 supposed suppose VBD 36297 572 9 to to TO 36297 572 10 be be VB 36297 572 11 a a DT 36297 572 12 squirrel squirrel NN 36297 572 13 upon upon IN 36297 572 14 a a DT 36297 572 15 tree tree NN 36297 572 16 - - HYPH 36297 572 17 trunk trunk NN 36297 572 18 and and CC 36297 572 19 his -PRON- PRP$ 36297 572 20 failure failure NN 36297 572 21 to to TO 36297 572 22 make make VB 36297 572 23 a a DT 36297 572 24 kill kill NN 36297 572 25 was be VBD 36297 572 26 beginning begin VBG 36297 572 27 to to TO 36297 572 28 weaken weaken VB 36297 572 29 his -PRON- PRP$ 36297 572 30 rather rather RB 36297 572 31 ample ample JJ 36297 572 32 opinion opinion NN 36297 572 33 of of IN 36297 572 34 his -PRON- PRP$ 36297 572 35 skill skill NN 36297 572 36 as as IN 36297 572 37 a a DT 36297 572 38 marksman marksman NN 36297 572 39 . . . 36297 573 1 A a DT 36297 573 2 complete complete JJ 36297 573 3 shattering shattering NN 36297 573 4 of of IN 36297 573 5 his -PRON- PRP$ 36297 573 6 faith faith NN 36297 573 7 in in IN 36297 573 8 his -PRON- PRP$ 36297 573 9 skill skill NN 36297 573 10 was be VBD 36297 573 11 only only RB 36297 573 12 escaped escape VBN 36297 573 13 by by IN 36297 573 14 the the DT 36297 573 15 discovery discovery NN 36297 573 16 that that IN 36297 573 17 the the DT 36297 573 18 " " `` 36297 573 19 squirrel squirrel NN 36297 573 20 " " '' 36297 573 21 was be VBD 36297 573 22 a a DT 36297 573 23 louse louse NN 36297 573 24 upon upon IN 36297 573 25 his -PRON- PRP$ 36297 573 26 eyebrow eyebrow NN 36297 573 27 . . . 36297 574 1 Similarly similarly RB 36297 574 2 , , , 36297 574 3 a a DT 36297 574 4 gnat gnat NN 36297 574 5 in in IN 36297 574 6 the the DT 36297 574 7 air air NN 36297 574 8 might may MD 36297 574 9 appear appear VB 36297 574 10 to to TO 36297 574 11 be be VB 36297 574 12 an an DT 36297 574 13 airplane airplane NN 36297 574 14 under under IN 36297 574 15 certain certain JJ 36297 574 16 favorable favorable JJ 36297 574 17 circumstances circumstance NNS 36297 574 18 . . . 36297 575 1 It -PRON- PRP 36297 575 2 is be VBZ 36297 575 3 interesting interesting JJ 36297 575 4 to to TO 36297 575 5 note note VB 36297 575 6 that that IN 36297 575 7 the the DT 36297 575 8 estimated estimate VBN 36297 575 9 size size NN 36297 575 10 of of IN 36297 575 11 the the DT 36297 575 12 disk disk NN 36297 575 13 of of IN 36297 575 14 the the DT 36297 575 15 sun sun NN 36297 575 16 or or CC 36297 575 17 moon moon NN 36297 575 18 varies vary VBZ 36297 575 19 from from IN 36297 575 20 the the DT 36297 575 21 size size NN 36297 575 22 of of IN 36297 575 23 a a DT 36297 575 24 saucer saucer NN 36297 575 25 to to IN 36297 575 26 that that DT 36297 575 27 of of IN 36297 575 28 the the DT 36297 575 29 end end NN 36297 575 30 of of IN 36297 575 31 a a DT 36297 575 32 barrel barrel NN 36297 575 33 , , , 36297 575 34 although although IN 36297 575 35 a a DT 36297 575 36 pine pine JJ 36297 575 37 tree tree NN 36297 575 38 at at IN 36297 575 39 the the DT 36297 575 40 horizon horizon NN 36297 575 41 - - HYPH 36297 575 42 line line NN 36297 575 43 may may MD 36297 575 44 be be VB 36297 575 45 estimated estimate VBN 36297 575 46 as as IN 36297 575 47 25 25 CD 36297 575 48 feet foot NNS 36297 575 49 across across IN 36297 575 50 despite despite IN 36297 575 51 the the DT 36297 575 52 fact fact NN 36297 575 53 that that IN 36297 575 54 it -PRON- PRP 36297 575 55 may may MD 36297 575 56 be be VB 36297 575 57 entirely entirely RB 36297 575 58 included include VBN 36297 575 59 in in IN 36297 575 60 the the DT 36297 575 61 disk disk NN 36297 575 62 of of IN 36297 575 63 the the DT 36297 575 64 sun sun NN 36297 575 65 setting set VBG 36297 575 66 behind behind IN 36297 575 67 it -PRON- PRP 36297 575 68 . . . 36297 576 1 Double double JJ 36297 576 2 images image NNS 36297 576 3 play play VBP 36297 576 4 an an DT 36297 576 5 important important JJ 36297 576 6 part part NN 36297 576 7 in in IN 36297 576 8 the the DT 36297 576 9 comparison comparison NN 36297 576 10 of of IN 36297 576 11 distances distance NNS 36297 576 12 of of IN 36297 576 13 objects object NNS 36297 576 14 . . . 36297 577 1 The the DT 36297 577 2 " " `` 36297 577 3 doubling doubling NN 36297 577 4 " " '' 36297 577 5 of of IN 36297 577 6 objects object NNS 36297 577 7 is be VBZ 36297 577 8 only only RB 36297 577 9 equal equal JJ 36297 577 10 to to IN 36297 577 11 the the DT 36297 577 12 interocular interocular JJ 36297 577 13 distance distance NN 36297 577 14 . . . 36297 578 1 Suppose suppose VB 36297 578 2 two two CD 36297 578 3 horizontal horizontal JJ 36297 578 4 wires wire NNS 36297 578 5 or or CC 36297 578 6 clotheslines clothesline NNS 36297 578 7 about about IN 36297 578 8 fifty fifty CD 36297 578 9 feet foot NNS 36297 578 10 away away RB 36297 578 11 and and CC 36297 578 12 one one CD 36297 578 13 a a DT 36297 578 14 few few JJ 36297 578 15 feet foot NNS 36297 578 16 beyond beyond IN 36297 578 17 the the DT 36297 578 18 other other JJ 36297 578 19 . . . 36297 579 1 On on IN 36297 579 2 looking look VBG 36297 579 3 at at IN 36297 579 4 these these DT 36297 579 5 no no DT 36297 579 6 double double JJ 36297 579 7 images image NNS 36297 579 8 are be VBP 36297 579 9 visible visible JJ 36297 579 10 and and CC 36297 579 11 it -PRON- PRP 36297 579 12 is be VBZ 36297 579 13 difficult difficult JJ 36297 579 14 or or CC 36297 579 15 even even RB 36297 579 16 impossible impossible JJ 36297 579 17 to to TO 36297 579 18 see see VB 36297 579 19 which which WDT 36297 579 20 is be VBZ 36297 579 21 the the DT 36297 579 22 nearer nearer NN 36297 579 23 when when WRB 36297 579 24 the the DT 36297 579 25 points point NNS 36297 579 26 of of IN 36297 579 27 attachment attachment NN 36297 579 28 of of IN 36297 579 29 the the DT 36297 579 30 ends end NNS 36297 579 31 are be VBP 36297 579 32 screened screen VBN 36297 579 33 from from IN 36297 579 34 view view NN 36297 579 35 . . . 36297 580 1 However however RB 36297 580 2 , , , 36297 580 3 if if IN 36297 580 4 the the DT 36297 580 5 head head NN 36297 580 6 is be VBZ 36297 580 7 turned turn VBN 36297 580 8 to to IN 36297 580 9 one one CD 36297 580 10 side side NN 36297 580 11 and and CC 36297 580 12 downward downward JJ 36297 580 13 ( ( -LRB- 36297 580 14 90 90 CD 36297 580 15 degrees degree NNS 36297 580 16 ) ) -RRB- 36297 580 17 so so IN 36297 580 18 that that IN 36297 580 19 the the DT 36297 580 20 interocular interocular JJ 36297 580 21 line line NN 36297 580 22 is be VBZ 36297 580 23 now now RB 36297 580 24 at at IN 36297 580 25 right right JJ 36297 580 26 angles angle NNS 36297 580 27 ( ( -LRB- 36297 580 28 vertical vertical JJ 36297 580 29 ) ) -RRB- 36297 580 30 to to IN 36297 580 31 the the DT 36297 580 32 horizontal horizontal JJ 36297 580 33 lines line NNS 36297 580 34 , , , 36297 580 35 the the DT 36297 580 36 relative relative JJ 36297 580 37 distances distance NNS 36297 580 38 of of IN 36297 580 39 the the DT 36297 580 40 latter latter JJ 36297 580 41 are be VBP 36297 580 42 brought bring VBN 36297 580 43 out out RP 36297 580 44 distinctly distinctly RB 36297 580 45 . . . 36297 581 1 Double double JJ 36297 581 2 images image NNS 36297 581 3 become become VBP 36297 581 4 visible visible JJ 36297 581 5 in in IN 36297 581 6 the the DT 36297 581 7 latter latter JJ 36297 581 8 case case NN 36297 581 9 . . . 36297 582 1 According accord VBG 36297 582 2 to to IN 36297 582 3 Brücke Brücke NNP 36297 582 4 's 's POS 36297 582 5 theory theory NN 36297 582 6 the the DT 36297 582 7 eyes eye NNS 36297 582 8 are be VBP 36297 582 9 continuously continuously RB 36297 582 10 in in IN 36297 582 11 motion motion NN 36297 582 12 and and CC 36297 582 13 the the DT 36297 582 14 observer observer NN 36297 582 15 by by IN 36297 582 16 alternately alternately RB 36297 582 17 increasing increase VBG 36297 582 18 or or CC 36297 582 19 decreasing decrease VBG 36297 582 20 the the DT 36297 582 21 convergence convergence NN 36297 582 22 of of IN 36297 582 23 the the DT 36297 582 24 axes axis NNS 36297 582 25 of of IN 36297 582 26 the the DT 36297 582 27 eyes eye NNS 36297 582 28 , , , 36297 582 29 combines combine VBZ 36297 582 30 successively successively RB 36297 582 31 the the DT 36297 582 32 different different JJ 36297 582 33 parts part NNS 36297 582 34 of of IN 36297 582 35 the the DT 36297 582 36 two two CD 36297 582 37 scenes scene NNS 36297 582 38 as as IN 36297 582 39 seen see VBN 36297 582 40 by by IN 36297 582 41 the the DT 36297 582 42 two two CD 36297 582 43 eyes eye NNS 36297 582 44 and and CC 36297 582 45 by by IN 36297 582 46 running run VBG 36297 582 47 the the DT 36297 582 48 point point NN 36297 582 49 of of IN 36297 582 50 sight sight NN 36297 582 51 back back RB 36297 582 52 and and CC 36297 582 53 forth forth RB 36297 582 54 by by IN 36297 582 55 trial trial NN 36297 582 56 obtains obtain NNS 36297 582 57 a a DT 36297 582 58 distinct distinct JJ 36297 582 59 perception perception NN 36297 582 60 of of IN 36297 582 61 binocular binocular JJ 36297 582 62 perspective perspective NN 36297 582 63 or or CC 36297 582 64 relief relief NN 36297 582 65 or or CC 36297 582 66 depth depth NN 36297 582 67 of of IN 36297 582 68 space space NN 36297 582 69 . . . 36297 583 1 It -PRON- PRP 36297 583 2 may may MD 36297 583 3 be be VB 36297 583 4 assumed assume VBN 36297 583 5 that that IN 36297 583 6 experience experience NN 36297 583 7 has have VBZ 36297 583 8 made make VBN 36297 583 9 the the DT 36297 583 10 observer observer NN 36297 583 11 proficient proficient JJ 36297 583 12 in in IN 36297 583 13 this this DT 36297 583 14 appraisal appraisal NN 36297 583 15 which which WDT 36297 583 16 he -PRON- PRP 36297 583 17 arrives arrive VBZ 36297 583 18 at at IN 36297 583 19 almost almost RB 36297 583 20 unconsciously unconsciously RB 36297 583 21 , , , 36297 583 22 although although IN 36297 583 23 it -PRON- PRP 36297 583 24 may may MD 36297 583 25 be be VB 36297 583 26 just just RB 36297 583 27 as as RB 36297 583 28 easy easy JJ 36297 583 29 to to TO 36297 583 30 accept accept VB 36297 583 31 Wheatstone Wheatstone NNP 36297 583 32 's 's POS 36297 583 33 explanation explanation NN 36297 583 34 . . . 36297 584 1 In in IN 36297 584 2 fact fact NN 36297 584 3 , , , 36297 584 4 some some DT 36297 584 5 experiences experience NNS 36297 584 6 with with IN 36297 584 7 the the DT 36297 584 8 stereoscope stereoscope NN 36297 584 9 appear appear VBP 36297 584 10 to to TO 36297 584 11 support support VB 36297 584 12 the the DT 36297 584 13 latter latter JJ 36297 584 14 theory theory NN 36297 584 15 . . . 36297 585 1 Wheatstone wheatstone NN 36297 585 2 discovered discover VBD 36297 585 3 that that IN 36297 585 4 the the DT 36297 585 5 dissimilar dissimilar JJ 36297 585 6 pictures picture NNS 36297 585 7 of of IN 36297 585 8 an an DT 36297 585 9 object object NN 36297 585 10 or or CC 36297 585 11 scene scene NN 36297 585 12 , , , 36297 585 13 when when WRB 36297 585 14 united unite VBN 36297 585 15 by by IN 36297 585 16 means mean NNS 36297 585 17 of of IN 36297 585 18 optical optical JJ 36297 585 19 systems system NNS 36297 585 20 , , , 36297 585 21 produce produce VBP 36297 585 22 a a DT 36297 585 23 visual visual JJ 36297 585 24 effect effect NN 36297 585 25 similar similar JJ 36297 585 26 to to IN 36297 585 27 that that DT 36297 585 28 produced produce VBN 36297 585 29 by by IN 36297 585 30 the the DT 36297 585 31 actual actual JJ 36297 585 32 solid solid JJ 36297 585 33 object object NN 36297 585 34 or or CC 36297 585 35 scene scene NN 36297 585 36 provided provide VBD 36297 585 37 the the DT 36297 585 38 dissimilarity dissimilarity NN 36297 585 39 is be VBZ 36297 585 40 the the DT 36297 585 41 same same JJ 36297 585 42 as as IN 36297 585 43 that that DT 36297 585 44 between between IN 36297 585 45 two two CD 36297 585 46 retinal retinal JJ 36297 585 47 images image NNS 36297 585 48 of of IN 36297 585 49 the the DT 36297 585 50 solid solid JJ 36297 585 51 object object NN 36297 585 52 or or CC 36297 585 53 scene scene NN 36297 585 54 . . . 36297 586 1 This this DT 36297 586 2 is be VBZ 36297 586 3 the the DT 36297 586 4 principle principle NN 36297 586 5 upon upon IN 36297 586 6 which which WDT 36297 586 7 the the DT 36297 586 8 familiar familiar JJ 36297 586 9 stereoscope stereoscope NN 36297 586 10 is be VBZ 36297 586 11 founded found VBN 36297 586 12 . . . 36297 587 1 Wheatstone wheatstone NN 36297 587 2 formulated formulate VBD 36297 587 3 a a DT 36297 587 4 theory theory NN 36297 587 5 which which WDT 36297 587 6 may may MD 36297 587 7 be be VB 36297 587 8 briefly briefly RB 36297 587 9 stated state VBN 36297 587 10 as as IN 36297 587 11 follows follow VBZ 36297 587 12 : : : 36297 587 13 In in IN 36297 587 14 viewing view VBG 36297 587 15 a a DT 36297 587 16 solid solid JJ 36297 587 17 object object NN 36297 587 18 or or CC 36297 587 19 a a DT 36297 587 20 scene scene NN 36297 587 21 two two CD 36297 587 22 slightly slightly RB 36297 587 23 dissimilar dissimilar JJ 36297 587 24 retinal retinal JJ 36297 587 25 images image NNS 36297 587 26 are be VBP 36297 587 27 formed form VBN 36297 587 28 in in IN 36297 587 29 the the DT 36297 587 30 two two CD 36297 587 31 eyes eye NNS 36297 587 32 respectively respectively RB 36297 587 33 , , , 36297 587 34 but but CC 36297 587 35 the the DT 36297 587 36 mind mind NN 36297 587 37 completely completely RB 36297 587 38 fuses fuse VBZ 36297 587 39 them -PRON- PRP 36297 587 40 into into IN 36297 587 41 one one CD 36297 587 42 " " `` 36297 587 43 mental mental JJ 36297 587 44 " " '' 36297 587 45 image image NN 36297 587 46 . . . 36297 588 1 When when WRB 36297 588 2 this this DT 36297 588 3 mental mental JJ 36297 588 4 fusion fusion NN 36297 588 5 of of IN 36297 588 6 the the DT 36297 588 7 two two CD 36297 588 8 really really RB 36297 588 9 dissimilar dissimilar JJ 36297 588 10 retinal retinal JJ 36297 588 11 images image NNS 36297 588 12 is be VBZ 36297 588 13 complete complete JJ 36297 588 14 in in IN 36297 588 15 this this DT 36297 588 16 way way NN 36297 588 17 , , , 36297 588 18 it -PRON- PRP 36297 588 19 is be VBZ 36297 588 20 obvious obvious JJ 36297 588 21 that that IN 36297 588 22 there there EX 36297 588 23 can can MD 36297 588 24 not not RB 36297 588 25 exist exist VB 36297 588 26 a a DT 36297 588 27 mathematical mathematical JJ 36297 588 28 coincidence coincidence NN 36297 588 29 . . . 36297 589 1 The the DT 36297 589 2 result result NN 36297 589 3 is be VBZ 36297 589 4 a a DT 36297 589 5 perception perception NN 36297 589 6 of of IN 36297 589 7 depth depth NN 36297 589 8 of of IN 36297 589 9 space space NN 36297 589 10 , , , 36297 589 11 of of IN 36297 589 12 solidity solidity NN 36297 589 13 , , , 36297 589 14 of of IN 36297 589 15 relief relief NN 36297 589 16 . . . 36297 590 1 In in IN 36297 590 2 fact fact NN 36297 590 3 the the DT 36297 590 4 third third JJ 36297 590 5 dimension dimension NN 36297 590 6 is be VBZ 36297 590 7 perceived perceive VBN 36297 590 8 . . . 36297 591 1 A a DT 36297 591 2 stereoscope stereoscope NN 36297 591 3 accomplishes accomplish VBZ 36297 591 4 this this DT 36297 591 5 in in IN 36297 591 6 essentially essentially RB 36297 591 7 the the DT 36297 591 8 same same JJ 36297 591 9 manner manner NN 36297 591 10 , , , 36297 591 11 for for IN 36297 591 12 two two CD 36297 591 13 pictures picture NNS 36297 591 14 , , , 36297 591 15 taken take VBN 36297 591 16 from from IN 36297 591 17 two two CD 36297 591 18 different different JJ 36297 591 19 positions position NNS 36297 591 20 respectively respectively RB 36297 591 21 corresponding correspond VBG 36297 591 22 to to IN 36297 591 23 the the DT 36297 591 24 positions position NNS 36297 591 25 of of IN 36297 591 26 the the DT 36297 591 27 eyes eye NNS 36297 591 28 , , , 36297 591 29 are be VBP 36297 591 30 combined combine VBN 36297 591 31 by by IN 36297 591 32 means mean NNS 36297 591 33 of of IN 36297 591 34 optical optical JJ 36297 591 35 systems system NNS 36297 591 36 into into IN 36297 591 37 one one CD 36297 591 38 image image NN 36297 591 39 . . . 36297 592 1 Lack lack NN 36297 592 2 of of IN 36297 592 3 correct correct JJ 36297 592 4 size size NN 36297 592 5 and and CC 36297 592 6 position position NN 36297 592 7 of of IN 36297 592 8 the the DT 36297 592 9 individual individual JJ 36297 592 10 elements element NNS 36297 592 11 of of IN 36297 592 12 stereoscopic stereoscopic JJ 36297 592 13 pictures picture NNS 36297 592 14 are be VBP 36297 592 15 easily easily RB 36297 592 16 detected detect VBN 36297 592 17 on on IN 36297 592 18 combining combine VBG 36297 592 19 them -PRON- PRP 36297 592 20 . . . 36297 593 1 That that RB 36297 593 2 is is RB 36297 593 3 , , , 36297 593 4 their -PRON- PRP$ 36297 593 5 dissimilarity dissimilarity NN 36297 593 6 must must MD 36297 593 7 exactly exactly RB 36297 593 8 correspond correspond VB 36297 593 9 to to IN 36297 593 10 that that DT 36297 593 11 between between IN 36297 593 12 two two CD 36297 593 13 views view NNS 36297 593 14 of of IN 36297 593 15 an an DT 36297 593 16 object object NN 36297 593 17 or or CC 36297 593 18 scene scene NN 36297 593 19 from from IN 36297 593 20 the the DT 36297 593 21 positions position NNS 36297 593 22 of of IN 36297 593 23 the the DT 36297 593 24 two two CD 36297 593 25 eyes eye NNS 36297 593 26 respectively respectively RB 36297 593 27 ( ( -LRB- 36297 593 28 Fig fig NN 36297 593 29 . . . 36297 594 1 2 2 LS 36297 594 2 ) ) -RRB- 36297 594 3 . . . 36297 595 1 This this DT 36297 595 2 fact fact NN 36297 595 3 has have VBZ 36297 595 4 been be VBN 36297 595 5 made make VBN 36297 595 6 use use NN 36297 595 7 of of IN 36297 595 8 in in IN 36297 595 9 detecting detect VBG 36297 595 10 counterfeit counterfeit JJ 36297 595 11 notes note NNS 36297 595 12 . . . 36297 596 1 If if IN 36297 596 2 two two CD 36297 596 3 notes note NNS 36297 596 4 made make VBN 36297 596 5 from from IN 36297 596 6 the the DT 36297 596 7 same same JJ 36297 596 8 plate plate NN 36297 596 9 are be VBP 36297 596 10 viewed view VBN 36297 596 11 in in IN 36297 596 12 a a DT 36297 596 13 stereoscope stereoscope NN 36297 596 14 and and CC 36297 596 15 the the DT 36297 596 16 identical identical JJ 36297 596 17 figures figure NNS 36297 596 18 are be VBP 36297 596 19 combined combine VBN 36297 596 20 , , , 36297 596 21 the the DT 36297 596 22 combination combination NN 36297 596 23 is be VBZ 36297 596 24 perfect perfect JJ 36297 596 25 and and CC 36297 596 26 the the DT 36297 596 27 plane plane NN 36297 596 28 of of IN 36297 596 29 the the DT 36297 596 30 combined combine VBN 36297 596 31 images image NNS 36297 596 32 is be VBZ 36297 596 33 perfectly perfectly RB 36297 596 34 flat flat JJ 36297 596 35 . . . 36297 597 1 If if IN 36297 597 2 the the DT 36297 597 3 notes note NNS 36297 597 4 are be VBP 36297 597 5 not not RB 36297 597 6 made make VBN 36297 597 7 from from IN 36297 597 8 the the DT 36297 597 9 same same JJ 36297 597 10 plate plate NN 36297 597 11 but but CC 36297 597 12 one one CD 36297 597 13 of of IN 36297 597 14 them -PRON- PRP 36297 597 15 is be VBZ 36297 597 16 counterfeit counterfeit JJ 36297 597 17 , , , 36297 597 18 slight slight JJ 36297 597 19 variations variation NNS 36297 597 20 in in IN 36297 597 21 the the DT 36297 597 22 latter latter JJ 36297 597 23 are be VBP 36297 597 24 unavoidable unavoidable JJ 36297 597 25 . . . 36297 598 1 Such such JJ 36297 598 2 variations variation NNS 36297 598 3 will will MD 36297 598 4 show show VB 36297 598 5 themselves -PRON- PRP 36297 598 6 in in IN 36297 598 7 a a DT 36297 598 8 wavy wavy NNP 36297 598 9 surface surface NN 36297 598 10 . . . 36297 599 1 The the DT 36297 599 2 unwillingness unwillingness NN 36297 599 3 of of IN 36297 599 4 the the DT 36297 599 5 visual visual JJ 36297 599 6 sense sense NN 36297 599 7 to to TO 36297 599 8 combine combine VB 36297 599 9 the the DT 36297 599 10 two two CD 36297 599 11 retinal retinal JJ 36297 599 12 images image NNS 36297 599 13 , , , 36297 599 14 if if IN 36297 599 15 they -PRON- PRP 36297 599 16 are be VBP 36297 599 17 dissimilar dissimilar JJ 36297 599 18 to to IN 36297 599 19 the the DT 36297 599 20 extent extent NN 36297 599 21 of of IN 36297 599 22 belonging belong VBG 36297 599 23 to to IN 36297 599 24 two two CD 36297 599 25 different different JJ 36297 599 26 objects object NNS 36297 599 27 , , , 36297 599 28 is be VBZ 36297 599 29 emphasized emphasize VBN 36297 599 30 by by IN 36297 599 31 means mean NNS 36297 599 32 of of IN 36297 599 33 colors color NNS 36297 599 34 . . . 36297 600 1 For for IN 36297 600 2 example example NN 36297 600 3 , , , 36297 600 4 if if IN 36297 600 5 a a DT 36297 600 6 green green JJ 36297 600 7 glass glass NN 36297 600 8 is be VBZ 36297 600 9 placed place VBN 36297 600 10 over over IN 36297 600 11 one one CD 36297 600 12 eye eye NN 36297 600 13 and and CC 36297 600 14 a a DT 36297 600 15 red red JJ 36297 600 16 glass glass NN 36297 600 17 over over IN 36297 600 18 the the DT 36297 600 19 other other JJ 36297 600 20 , , , 36297 600 21 the the DT 36297 600 22 colors color NNS 36297 600 23 are be VBP 36297 600 24 not not RB 36297 600 25 mixed mix VBN 36297 600 26 by by IN 36297 600 27 the the DT 36297 600 28 visual visual JJ 36297 600 29 sense sense NN 36297 600 30 . . . 36297 601 1 The the DT 36297 601 2 addition addition NN 36297 601 3 of of IN 36297 601 4 these these DT 36297 601 5 two two CD 36297 601 6 colors color NNS 36297 601 7 results result NNS 36297 601 8 normally normally RB 36297 601 9 in in IN 36297 601 10 yellow yellow NN 36297 601 11 , , , 36297 601 12 with with IN 36297 601 13 little little JJ 36297 601 14 or or CC 36297 601 15 no no DT 36297 601 16 suggestion suggestion NN 36297 601 17 of of IN 36297 601 18 the the DT 36297 601 19 components component NNS 36297 601 20 -- -- : 36297 601 21 red red JJ 36297 601 22 and and CC 36297 601 23 green green JJ 36297 601 24 . . . 36297 602 1 But but CC 36297 602 2 in in IN 36297 602 3 the the DT 36297 602 4 foregoing foregoing NN 36297 602 5 case case NN 36297 602 6 the the DT 36297 602 7 visual visual JJ 36297 602 8 field field NN 36297 602 9 does do VBZ 36297 602 10 not not RB 36297 602 11 appear appear VB 36297 602 12 of of IN 36297 602 13 a a DT 36297 602 14 uniform uniform JJ 36297 602 15 yellow yellow NN 36297 602 16 . . . 36297 603 1 It -PRON- PRP 36297 603 2 appears appear VBZ 36297 603 3 alternately alternately RB 36297 603 4 red red JJ 36297 603 5 and and CC 36297 603 6 green green JJ 36297 603 7 , , , 36297 603 8 as as IN 36297 603 9 though though IN 36297 603 10 the the DT 36297 603 11 colors color NNS 36297 603 12 were be VBD 36297 603 13 rivaling rival VBG 36297 603 14 each each DT 36297 603 15 other other JJ 36297 603 16 for for IN 36297 603 17 complete complete JJ 36297 603 18 mastery mastery NN 36297 603 19 . . . 36297 604 1 In in IN 36297 604 2 fact fact NN 36297 604 3 , , , 36297 604 4 this this DT 36297 604 5 phenomenon phenomenon NN 36297 604 6 has have VBZ 36297 604 7 been be VBN 36297 604 8 termed term VBN 36297 604 9 " " `` 36297 604 10 retinal retinal JJ 36297 604 11 rivalry rivalry NN 36297 604 12 . . . 36297 604 13 " " '' 36297 605 1 The the DT 36297 605 2 lenses lense NNS 36297 605 3 of of IN 36297 605 4 the the DT 36297 605 5 stereoscope stereoscope NN 36297 605 6 supplement supplement NN 36297 605 7 eye eye NN 36297 605 8 - - HYPH 36297 605 9 lenses lense NNS 36297 605 10 and and CC 36297 605 11 project project NN 36297 605 12 on on IN 36297 605 13 the the DT 36297 605 14 retina retina NNP 36297 605 15 two two CD 36297 605 16 perfect perfect JJ 36297 605 17 images image NNS 36297 605 18 of of IN 36297 605 19 a a DT 36297 605 20 near near JJ 36297 605 21 object object NN 36297 605 22 , , , 36297 605 23 although although IN 36297 605 24 the the DT 36297 605 25 eyes eye NNS 36297 605 26 are be VBP 36297 605 27 looking look VBG 36297 605 28 at at IN 36297 605 29 a a DT 36297 605 30 distant distant JJ 36297 605 31 object object NN 36297 605 32 and and CC 36297 605 33 are be VBP 36297 605 34 therefore therefore RB 36297 605 35 not not RB 36297 605 36 accommodated accommodate VBN 36297 605 37 for for IN 36297 605 38 the the DT 36297 605 39 near near JJ 36297 605 40 one one CD 36297 605 41 ( ( -LRB- 36297 605 42 the the DT 36297 605 43 photographs photograph NNS 36297 605 44 ) ) -RRB- 36297 605 45 . . . 36297 606 1 The the DT 36297 606 2 lenses lense NNS 36297 606 3 enlarge enlarge VBP 36297 606 4 the the DT 36297 606 5 images image NNS 36297 606 6 similar similar JJ 36297 606 7 to to IN 36297 606 8 the the DT 36297 606 9 action action NN 36297 606 10 of of IN 36297 606 11 a a DT 36297 606 12 perspective perspective JJ 36297 606 13 glass glass NN 36297 606 14 . . . 36297 607 1 This this DT 36297 607 2 completes complete VBZ 36297 607 3 the the DT 36297 607 4 illusion illusion NN 36297 607 5 of of IN 36297 607 6 an an DT 36297 607 7 object object NN 36297 607 8 or or CC 36297 607 9 of of IN 36297 607 10 a a DT 36297 607 11 scene scene NN 36297 607 12 . . . 36297 608 1 There there EX 36297 608 2 is be VBZ 36297 608 3 a a DT 36297 608 4 remarkable remarkable JJ 36297 608 5 distinctness distinctness NN 36297 608 6 of of IN 36297 608 7 the the DT 36297 608 8 perception perception NN 36297 608 9 of of IN 36297 608 10 depth depth NN 36297 608 11 of of IN 36297 608 12 space space NN 36297 608 13 and and CC 36297 608 14 therefore therefore RB 36297 608 15 a a DT 36297 608 16 wonderful wonderful JJ 36297 608 17 resemblance resemblance NN 36297 608 18 to to IN 36297 608 19 the the DT 36297 608 20 actual actual JJ 36297 608 21 object object NN 36297 608 22 or or CC 36297 608 23 scene scene NN 36297 608 24 . . . 36297 609 1 It -PRON- PRP 36297 609 2 is be VBZ 36297 609 3 interesting interesting JJ 36297 609 4 to to TO 36297 609 5 note note VB 36297 609 6 the the DT 36297 609 7 effect effect NN 36297 609 8 of of IN 36297 609 9 taking take VBG 36297 609 10 the the DT 36297 609 11 two two CD 36297 609 12 original original JJ 36297 609 13 photographs photograph NNS 36297 609 14 from from IN 36297 609 15 distances distance NNS 36297 609 16 separated separate VBN 36297 609 17 by by IN 36297 609 18 several several JJ 36297 609 19 feet foot NNS 36297 609 20 . . . 36297 610 1 The the DT 36297 610 2 effect effect NN 36297 610 3 is be VBZ 36297 610 4 apparently apparently RB 36297 610 5 to to TO 36297 610 6 magnify magnify VB 36297 610 7 depth depth NN 36297 610 8 . . . 36297 611 1 It -PRON- PRP 36297 611 2 is be VBZ 36297 611 3 noteworthy noteworthy JJ 36297 611 4 that that IN 36297 611 5 two two CD 36297 611 6 pictures picture NNS 36297 611 7 taken take VBN 36297 611 8 from from IN 36297 611 9 an an DT 36297 611 10 airplane airplane NN 36297 611 11 at at IN 36297 611 12 points point NNS 36297 611 13 fifty fifty CD 36297 611 14 feet foot NNS 36297 611 15 or or CC 36297 611 16 so so RB 36297 611 17 apart apart RB 36297 611 18 , , , 36297 611 19 when when WRB 36297 611 20 combined combine VBN 36297 611 21 in in IN 36297 611 22 the the DT 36297 611 23 stereoscope stereoscope NN 36297 611 24 , , , 36297 611 25 so so RB 36297 611 26 magnify magnify VB 36297 611 27 the the DT 36297 611 28 depth depth NN 36297 611 29 that that IN 36297 611 30 certain certain JJ 36297 611 31 enemy enemy NN 36297 611 32 - - HYPH 36297 611 33 works work NNS 36297 611 34 can can MD 36297 611 35 be be VB 36297 611 36 more more RBR 36297 611 37 advantageously advantageously RB 36297 611 38 detected detect VBN 36297 611 39 than than IN 36297 611 40 from from IN 36297 611 41 ordinary ordinary JJ 36297 611 42 photographs photograph NNS 36297 611 43 . . . 36297 612 1 Stereoscopic stereoscopic JJ 36297 612 2 images image NNS 36297 612 3 such such JJ 36297 612 4 as as IN 36297 612 5 represented represent VBN 36297 612 6 in in IN 36297 612 7 Fig Fig NNP 36297 612 8 . . . 36297 613 1 2 2 CD 36297 613 2 may may MD 36297 613 3 be be VB 36297 613 4 combined combine VBN 36297 613 5 without without IN 36297 613 6 the the DT 36297 613 7 aid aid NN 36297 613 8 of of IN 36297 613 9 the the DT 36297 613 10 stereoscope stereoscope NN 36297 613 11 if if IN 36297 613 12 the the DT 36297 613 13 optical optical JJ 36297 613 14 axes axis NNS 36297 613 15 of of IN 36297 613 16 the the DT 36297 613 17 eye eye NN 36297 613 18 can can MD 36297 613 19 be be VB 36297 613 20 sufficiently sufficiently RB 36297 613 21 converged converge VBN 36297 613 22 or or CC 36297 613 23 diverged diverge VBN 36297 613 24 . . . 36297 614 1 Such such JJ 36297 614 2 images image NNS 36297 614 3 or or CC 36297 614 4 pictures picture NNS 36297 614 5 are be VBP 36297 614 6 usually usually RB 36297 614 7 upon upon IN 36297 614 8 a a DT 36297 614 9 card card NN 36297 614 10 and and CC 36297 614 11 are be VBP 36297 614 12 intended intend VBN 36297 614 13 to to TO 36297 614 14 be be VB 36297 614 15 combined combine VBN 36297 614 16 beyond beyond IN 36297 614 17 the the DT 36297 614 18 plane plane NN 36297 614 19 of of IN 36297 614 20 the the DT 36297 614 21 card card NN 36297 614 22 , , , 36297 614 23 for for IN 36297 614 24 it -PRON- PRP 36297 614 25 is be VBZ 36297 614 26 in in IN 36297 614 27 this this DT 36297 614 28 position position NN 36297 614 29 that that IN 36297 614 30 the the DT 36297 614 31 object object NN 36297 614 32 or or CC 36297 614 33 scene scene NN 36297 614 34 can can MD 36297 614 35 be be VB 36297 614 36 perceived perceive VBN 36297 614 37 in in IN 36297 614 38 natural natural JJ 36297 614 39 perspective perspective NN 36297 614 40 , , , 36297 614 41 of of IN 36297 614 42 natural natural JJ 36297 614 43 size size NN 36297 614 44 , , , 36297 614 45 of of IN 36297 614 46 natural natural JJ 36297 614 47 form form NN 36297 614 48 , , , 36297 614 49 and and CC 36297 614 50 at at IN 36297 614 51 natural natural JJ 36297 614 52 distance distance NN 36297 614 53 . . . 36297 615 1 But but CC 36297 615 2 in in IN 36297 615 3 combining combine VBG 36297 615 4 them -PRON- PRP 36297 615 5 the the DT 36297 615 6 eyes eye NNS 36297 615 7 are be VBP 36297 615 8 looking look VBG 36297 615 9 at at IN 36297 615 10 a a DT 36297 615 11 distant distant JJ 36297 615 12 object object NN 36297 615 13 and and CC 36297 615 14 the the DT 36297 615 15 axes axis NNS 36297 615 16 are be VBP 36297 615 17 parallel parallel JJ 36297 615 18 or or CC 36297 615 19 nearly nearly RB 36297 615 20 so so RB 36297 615 21 . . . 36297 616 1 Therefore therefore RB 36297 616 2 , , , 36297 616 3 the the DT 36297 616 4 eyes eye NNS 36297 616 5 are be VBP 36297 616 6 focally focally RB 36297 616 7 adjusted adjust VBN 36297 616 8 for for IN 36297 616 9 a a DT 36297 616 10 distant distant JJ 36297 616 11 object object NN 36297 616 12 but but CC 36297 616 13 the the DT 36297 616 14 light light NN 36297 616 15 comes come VBZ 36297 616 16 from from IN 36297 616 17 a a DT 36297 616 18 very very RB 36297 616 19 near near JJ 36297 616 20 object object NN 36297 616 21 -- -- : 36297 616 22 the the DT 36297 616 23 pictures picture NNS 36297 616 24 on on IN 36297 616 25 the the DT 36297 616 26 card card NN 36297 616 27 . . . 36297 617 1 Myopic myopic JJ 36297 617 2 eyes eye NNS 36297 617 3 do do VBP 36297 617 4 not not RB 36297 617 5 experience experience VB 36297 617 6 this this DT 36297 617 7 difficulty difficulty NN 36297 617 8 and and CC 36297 617 9 it -PRON- PRP 36297 617 10 appears appear VBZ 36297 617 11 that that DT 36297 617 12 normal normal JJ 36297 617 13 vision vision NN 36297 617 14 may may MD 36297 617 15 be be VB 36297 617 16 trained train VBN 36297 617 17 to to TO 36297 617 18 overcome overcome VB 36297 617 19 it -PRON- PRP 36297 617 20 . . . 36297 618 1 Normal normal JJ 36297 618 2 eyes eye NNS 36297 618 3 are be VBP 36297 618 4 aided aid VBN 36297 618 5 by by IN 36297 618 6 using use VBG 36297 618 7 slightly slightly RB 36297 618 8 convex convex NNP 36297 618 9 lenses lense NNS 36297 618 10 . . . 36297 619 1 Such such JJ 36297 619 2 glasses glass NNS 36297 619 3 supplement supplement VBP 36297 619 4 the the DT 36297 619 5 lenses lense NNS 36297 619 6 of of IN 36297 619 7 the the DT 36297 619 8 eye eye NN 36297 619 9 , , , 36297 619 10 making make VBG 36297 619 11 possible possible JJ 36297 619 12 a a DT 36297 619 13 clear clear JJ 36297 619 14 vision vision NN 36297 619 15 of of IN 36297 619 16 a a DT 36297 619 17 near near JJ 36297 619 18 object object NN 36297 619 19 while while IN 36297 619 20 the the DT 36297 619 21 eyes eye NNS 36297 619 22 are be VBP 36297 619 23 really really RB 36297 619 24 looking look VBG 36297 619 25 far far RB 36297 619 26 away away RB 36297 619 27 or or CC 36297 619 28 , , , 36297 619 29 in in IN 36297 619 30 other other JJ 36297 619 31 words word NNS 36297 619 32 , , , 36297 619 33 making make VBG 36297 619 34 possible possible JJ 36297 619 35 a a DT 36297 619 36 clear clear JJ 36297 619 37 image image NN 36297 619 38 of of IN 36297 619 39 a a DT 36297 619 40 near near JJ 36297 619 41 object object NN 36297 619 42 upon upon IN 36297 619 43 the the DT 36297 619 44 retina retina NNP 36297 619 45 of of IN 36297 619 46 the the DT 36297 619 47 unadjusted unadjusted JJ 36297 619 48 eye eye NN 36297 619 49 . . . 36297 620 1 Stereoscopic stereoscopic JJ 36297 620 2 pictures picture NNS 36297 620 3 are be VBP 36297 620 4 usually usually RB 36297 620 5 so so RB 36297 620 6 mounted mount VBN 36297 620 7 that that IN 36297 620 8 " " `` 36297 620 9 identical identical JJ 36297 620 10 points point NNS 36297 620 11 " " '' 36297 620 12 on on IN 36297 620 13 the the DT 36297 620 14 two two CD 36297 620 15 pictures picture NNS 36297 620 16 are be VBP 36297 620 17 farther far RBR 36297 620 18 apart apart RB 36297 620 19 than than IN 36297 620 20 the the DT 36297 620 21 interocular interocular JJ 36297 620 22 distance distance NN 36297 620 23 and and CC 36297 620 24 therefore therefore RB 36297 620 25 the the DT 36297 620 26 two two CD 36297 620 27 images image NNS 36297 620 28 can can MD 36297 620 29 not not RB 36297 620 30 be be VB 36297 620 31 combined combine VBN 36297 620 32 when when WRB 36297 620 33 the the DT 36297 620 34 optical optical JJ 36297 620 35 axes axis NNS 36297 620 36 of of IN 36297 620 37 the the DT 36297 620 38 eyes eye NNS 36297 620 39 are be VBP 36297 620 40 parallel parallel JJ 36297 620 41 or or CC 36297 620 42 nearly nearly RB 36297 620 43 so so RB 36297 620 44 , , , 36297 620 45 which which WDT 36297 620 46 is be VBZ 36297 620 47 the the DT 36297 620 48 condition condition NN 36297 620 49 when when WRB 36297 620 50 looking look VBG 36297 620 51 at at IN 36297 620 52 a a DT 36297 620 53 distant distant JJ 36297 620 54 object object NN 36297 620 55 . . . 36297 621 1 In in IN 36297 621 2 such such PDT 36297 621 3 a a DT 36297 621 4 case case NN 36297 621 5 the the DT 36297 621 6 two two CD 36297 621 7 pictures picture NNS 36297 621 8 must must MD 36297 621 9 be be VB 36297 621 10 brought bring VBN 36297 621 11 closer close RBR 36297 621 12 together together RB 36297 621 13 . . . 36297 622 1 [ [ -LRB- 36297 622 2 Illustration illustration NN 36297 622 3 : : : 36297 622 4 Fig Fig NNP 36297 622 5 . . . 36297 623 1 2.--Stereoscopic 2.--Stereoscopic NNP 36297 623 2 pictures picture NNS 36297 623 3 for for IN 36297 623 4 combining combine VBG 36297 623 5 by by IN 36297 623 6 converging converge VBG 36297 623 7 or or CC 36297 623 8 diverging diverge VBG 36297 623 9 the the DT 36297 623 10 optical optical JJ 36297 623 11 axes axis NNS 36297 623 12 . . . 36297 623 13 ] ] -RRB- 36297 624 1 [ [ -LRB- 36297 624 2 Illustration illustration NN 36297 624 3 : : : 36297 624 4 Fig Fig NNP 36297 624 5 . . . 36297 625 1 3.--Stereoscopic 3.--stereoscopic JJ 36297 625 2 pictures picture NNS 36297 625 3 . . . 36297 625 4 ] ] -RRB- 36297 626 1 In in IN 36297 626 2 Figs fig NNS 36297 626 3 . . . 36297 627 1 2 2 CD 36297 627 2 and and CC 36297 627 3 3 3 CD 36297 627 4 are be VBP 36297 627 5 found find VBN 36297 627 6 " " `` 36297 627 7 dissimilar dissimilar JJ 36297 627 8 " " '' 36297 627 9 drawings drawing NNS 36297 627 10 of of IN 36297 627 11 the the DT 36297 627 12 correct correct JJ 36297 627 13 dissimilarity dissimilarity NN 36297 627 14 of of IN 36297 627 15 stereoscopic stereoscopic JJ 36297 627 16 pictures picture NNS 36297 627 17 . . . 36297 628 1 It -PRON- PRP 36297 628 2 is be VBZ 36297 628 3 interesting interesting JJ 36297 628 4 and and CC 36297 628 5 instructive instructive JJ 36297 628 6 to to TO 36297 628 7 practice practice VB 36297 628 8 combining combine VBG 36297 628 9 these these DT 36297 628 10 with with IN 36297 628 11 the the DT 36297 628 12 unaided unaided JJ 36297 628 13 eyes eye NNS 36297 628 14 . . . 36297 629 1 If if IN 36297 629 2 Fig Fig NNP 36297 629 3 . . . 36297 630 1 2 2 CD 36297 630 2 is be VBZ 36297 630 3 held hold VBN 36297 630 4 at at IN 36297 630 5 an an DT 36297 630 6 arm arm NN 36297 630 7 's 's POS 36297 630 8 length length NN 36297 630 9 and and CC 36297 630 10 the the DT 36297 630 11 eyes eye NNS 36297 630 12 are be VBP 36297 630 13 focused focus VBN 36297 630 14 upon upon IN 36297 630 15 a a DT 36297 630 16 point point NN 36297 630 17 several several JJ 36297 630 18 inches inch NNS 36297 630 19 distant distant JJ 36297 630 20 , , , 36297 630 21 the the DT 36297 630 22 axes axis NNS 36297 630 23 will will MD 36297 630 24 be be VB 36297 630 25 sufficiently sufficiently RB 36297 630 26 converged converge VBN 36297 630 27 so so IN 36297 630 28 that that IN 36297 630 29 the the DT 36297 630 30 two two CD 36297 630 31 images image NNS 36297 630 32 are be VBP 36297 630 33 superposed superpose VBN 36297 630 34 . . . 36297 631 1 It -PRON- PRP 36297 631 2 may may MD 36297 631 3 help help VB 36297 631 4 to to TO 36297 631 5 focus focus VB 36297 631 6 the the DT 36297 631 7 eyes eye NNS 36297 631 8 upon upon IN 36297 631 9 the the DT 36297 631 10 tip tip NN 36297 631 11 of of IN 36297 631 12 a a DT 36297 631 13 finger finger NN 36297 631 14 until until IN 36297 631 15 the the DT 36297 631 16 stereoscopic stereoscopic JJ 36297 631 17 images image NNS 36297 631 18 are be VBP 36297 631 19 combined combine VBN 36297 631 20 . . . 36297 632 1 In in IN 36297 632 2 this this DT 36297 632 3 case case NN 36297 632 4 of of IN 36297 632 5 converging converging NN 36297 632 6 axes axis NNS 36297 632 7 the the DT 36297 632 8 final final JJ 36297 632 9 combined combine VBN 36297 632 10 result result NN 36297 632 11 will will MD 36297 632 12 be be VB 36297 632 13 the the DT 36297 632 14 appearance appearance NN 36297 632 15 of of IN 36297 632 16 a a DT 36297 632 17 hollow hollow JJ 36297 632 18 tube tube NN 36297 632 19 or or CC 36297 632 20 of of IN 36297 632 21 a a DT 36297 632 22 shell shell NN 36297 632 23 of of IN 36297 632 24 a a DT 36297 632 25 truncated truncate VBN 36297 632 26 cone cone NN 36297 632 27 , , , 36297 632 28 apparently apparently RB 36297 632 29 possessing possess VBG 36297 632 30 the the DT 36297 632 31 third third JJ 36297 632 32 dimension dimension NN 36297 632 33 and and CC 36297 632 34 being be VBG 36297 632 35 perceived perceive VBN 36297 632 36 as as IN 36297 632 37 apparently apparently RB 36297 632 38 smaller small JJR 36297 632 39 than than IN 36297 632 40 the the DT 36297 632 41 actual actual JJ 36297 632 42 pictures picture NNS 36297 632 43 in in IN 36297 632 44 the the DT 36297 632 45 background background NN 36297 632 46 at at IN 36297 632 47 arm arm NNP 36297 632 48 's 's POS 36297 632 49 length length NN 36297 632 50 . . . 36297 633 1 If if IN 36297 633 2 the the DT 36297 633 3 two two CD 36297 633 4 stereoscopic stereoscopic JJ 36297 633 5 pictures picture NNS 36297 633 6 are be VBP 36297 633 7 combined combine VBN 36297 633 8 by by IN 36297 633 9 looking look VBG 36297 633 10 at at IN 36297 633 11 a a DT 36297 633 12 point point NN 36297 633 13 far far RB 36297 633 14 beyond beyond IN 36297 633 15 the the DT 36297 633 16 actual actual JJ 36297 633 17 position position NN 36297 633 18 of of IN 36297 633 19 Fig Fig NNP 36297 633 20 . . . 36297 634 1 2 2 CD 36297 634 2 , , , 36297 634 3 the the DT 36297 634 4 combined combined JJ 36297 634 5 effect effect NN 36297 634 6 is be VBZ 36297 634 7 a a DT 36297 634 8 solid solid JJ 36297 634 9 truncated truncate VBN 36297 634 10 cone cone NN 36297 634 11 but but CC 36297 634 12 perceived perceive VBD 36297 634 13 as as IN 36297 634 14 of of IN 36297 634 15 about about RB 36297 634 16 the the DT 36297 634 17 same same JJ 36297 634 18 size size NN 36297 634 19 and and CC 36297 634 20 at at IN 36297 634 21 about about IN 36297 634 22 the the DT 36297 634 23 same same JJ 36297 634 24 distance distance NN 36297 634 25 from from IN 36297 634 26 the the DT 36297 634 27 eye eye NN 36297 634 28 as as IN 36297 634 29 the the DT 36297 634 30 actual actual JJ 36297 634 31 diagrams diagram NNS 36297 634 32 . . . 36297 635 1 In in IN 36297 635 2 the the DT 36297 635 3 latter latter JJ 36297 635 4 case case NN 36297 635 5 the the DT 36297 635 6 smaller small JJR 36297 635 7 end end NN 36297 635 8 of of IN 36297 635 9 the the DT 36297 635 10 apparent apparent JJ 36297 635 11 solid solid JJ 36297 635 12 appears appear VBZ 36297 635 13 to to TO 36297 635 14 be be VB 36297 635 15 nearer near JJR 36297 635 16 than than IN 36297 635 17 the the DT 36297 635 18 larger large JJR 36297 635 19 end end NN 36297 635 20 , , , 36297 635 21 but but CC 36297 635 22 in in IN 36297 635 23 the the DT 36297 635 24 former former JJ 36297 635 25 case case NN 36297 635 26 the the DT 36297 635 27 reverse reverse NN 36297 635 28 is be VBZ 36297 635 29 true true JJ 36297 635 30 , , , 36297 635 31 that that RB 36297 635 32 is is RB 36297 635 33 , , , 36297 635 34 the the DT 36297 635 35 smaller small JJR 36297 635 36 end end NN 36297 635 37 appears appear VBZ 36297 635 38 to to TO 36297 635 39 be be VB 36297 635 40 at at IN 36297 635 41 a a DT 36297 635 42 greater great JJR 36297 635 43 distance distance NN 36297 635 44 . . . 36297 636 1 The the DT 36297 636 2 same same JJ 36297 636 3 experiments experiment NNS 36297 636 4 may may MD 36297 636 5 be be VB 36297 636 6 performed perform VBN 36297 636 7 for for IN 36297 636 8 Fig Fig NNP 36297 636 9 . . . 36297 637 1 3 3 CD 36297 637 2 with with IN 36297 637 3 similar similar JJ 36297 637 4 results result NNS 36297 637 5 excepting except VBG 36297 637 6 that that IN 36297 637 7 this this DT 36297 637 8 appears appear VBZ 36297 637 9 to to TO 36297 637 10 be be VB 36297 637 11 a a DT 36297 637 12 shell shell NN 36297 637 13 under under IN 36297 637 14 the the DT 36297 637 15 same same JJ 36297 637 16 circumstances circumstance NNS 36297 637 17 that that WDT 36297 637 18 Fig Fig NNP 36297 637 19 . . . 36297 638 1 2 2 CD 36297 638 2 appears appear VBZ 36297 638 3 to to TO 36297 638 4 be be VB 36297 638 5 a a DT 36297 638 6 solid solid JJ 36297 638 7 and and CC 36297 638 8 vice vice NN 36297 638 9 versa versa RB 36297 638 10 . . . 36297 639 1 A a DT 36297 639 2 few few JJ 36297 639 3 patient patient JJ 36297 639 4 trials trial NNS 36297 639 5 should should MD 36297 639 6 be be VB 36297 639 7 rewarded reward VBN 36297 639 8 by by IN 36297 639 9 success success NN 36297 639 10 , , , 36297 639 11 and and CC 36297 639 12 if if IN 36297 639 13 so so RB 36297 639 14 the the DT 36297 639 15 reader reader NN 36297 639 16 can can MD 36297 639 17 gain gain VB 36297 639 18 much much RB 36297 639 19 more more JJR 36297 639 20 understanding understanding NN 36297 639 21 from from IN 36297 639 22 the the DT 36297 639 23 actual actual JJ 36297 639 24 experiences experience NNS 36297 639 25 than than IN 36297 639 26 from from IN 36297 639 27 description description NN 36297 639 28 . . . 36297 640 1 The the DT 36297 640 2 foregoing foregoing JJ 36297 640 3 discussion discussion NN 36297 640 4 of of IN 36297 640 5 vision vision NN 36297 640 6 should should MD 36297 640 7 indicate indicate VB 36297 640 8 the the DT 36297 640 9 complexity complexity NN 36297 640 10 of of IN 36297 640 11 the the DT 36297 640 12 visual visual JJ 36297 640 13 and and CC 36297 640 14 mental mental JJ 36297 640 15 activities activity NNS 36297 640 16 involved involve VBN 36297 640 17 in in IN 36297 640 18 the the DT 36297 640 19 discrimination discrimination NN 36297 640 20 , , , 36297 640 21 association association NN 36297 640 22 , , , 36297 640 23 and and CC 36297 640 24 interpretation interpretation NN 36297 640 25 of of IN 36297 640 26 the the DT 36297 640 27 data datum NNS 36297 640 28 obtained obtain VBN 36297 640 29 through through IN 36297 640 30 the the DT 36297 640 31 eye eye NN 36297 640 32 . . . 36297 641 1 The the DT 36297 641 2 psychology psychology NN 36297 641 3 of of IN 36297 641 4 visual visual JJ 36297 641 5 perception perception NN 36297 641 6 is be VBZ 36297 641 7 still still RB 36297 641 8 a a DT 36297 641 9 much much RB 36297 641 10 controverted controvert VBN 36297 641 11 domain domain NN 36297 641 12 but but CC 36297 641 13 it -PRON- PRP 36297 641 14 is be VBZ 36297 641 15 believed believe VBN 36297 641 16 that that IN 36297 641 17 the the DT 36297 641 18 glimpses glimpse NNS 36297 641 19 of of IN 36297 641 20 the the DT 36297 641 21 process process NN 36297 641 22 of of IN 36297 641 23 vision vision NN 36297 641 24 which which WDT 36297 641 25 have have VBP 36297 641 26 been be VBN 36297 641 27 afforded afford VBN 36297 641 28 are be VBP 36297 641 29 sufficient sufficient JJ 36297 641 30 to to TO 36297 641 31 enable enable VB 36297 641 32 the the DT 36297 641 33 reader reader NN 36297 641 34 to to TO 36297 641 35 understand understand VB 36297 641 36 many many JJ 36297 641 37 illusions illusion NNS 36297 641 38 and and CC 36297 641 39 at at IN 36297 641 40 least least RBS 36297 641 41 to to TO 36297 641 42 appreciate appreciate VB 36297 641 43 more more RBR 36297 641 44 fully fully RB 36297 641 45 those those DT 36297 641 46 whose whose WP$ 36297 641 47 explanations explanation NNS 36297 641 48 remain remain VBP 36297 641 49 in in IN 36297 641 50 doubt doubt NN 36297 641 51 . . . 36297 642 1 Certainly certainly RB 36297 642 2 these these DT 36297 642 3 glimpses glimpse NNS 36297 642 4 and and CC 36297 642 5 a a DT 36297 642 6 knowledge knowledge NN 36297 642 7 of of IN 36297 642 8 the the DT 36297 642 9 information information NN 36297 642 10 which which WDT 36297 642 11 visual visual JJ 36297 642 12 perception perception NN 36297 642 13 actually actually RB 36297 642 14 supplies supply VBZ 36297 642 15 to to IN 36297 642 16 us -PRON- PRP 36297 642 17 at at IN 36297 642 18 any any DT 36297 642 19 moment moment NN 36297 642 20 should should MD 36297 642 21 convince convince VB 36297 642 22 us -PRON- PRP 36297 642 23 that that IN 36297 642 24 the the DT 36297 642 25 visual visual JJ 36297 642 26 sense sense NN 36297 642 27 has have VBZ 36297 642 28 acquired acquire VBN 36297 642 29 an an DT 36297 642 30 incomparable incomparable JJ 36297 642 31 facility facility NN 36297 642 32 for for IN 36297 642 33 interpreting interpret VBG 36297 642 34 the the DT 36297 642 35 objective objective JJ 36297 642 36 world world NN 36297 642 37 for for IN 36297 642 38 us -PRON- PRP 36297 642 39 . . . 36297 643 1 Clearness clearness NN 36297 643 2 of of IN 36297 643 3 vision vision NN 36297 643 4 is be VBZ 36297 643 5 confined confine VBN 36297 643 6 to to IN 36297 643 7 a a DT 36297 643 8 small small JJ 36297 643 9 area area NN 36297 643 10 about about IN 36297 643 11 the the DT 36297 643 12 point point NN 36297 643 13 of of IN 36297 643 14 sight sight NN 36297 643 15 , , , 36297 643 16 and and CC 36297 643 17 it -PRON- PRP 36297 643 18 rapidly rapidly RB 36297 643 19 diminishes diminish VBZ 36297 643 20 away away RB 36297 643 21 from from IN 36297 643 22 this this DT 36297 643 23 point point NN 36297 643 24 , , , 36297 643 25 images image NNS 36297 643 26 becoming become VBG 36297 643 27 dim dim NN 36297 643 28 and and CC 36297 643 29 double double JJ 36297 643 30 . . . 36297 644 1 We -PRON- PRP 36297 644 2 sweep sweep VBP 36297 644 3 this this DT 36297 644 4 point point NN 36297 644 5 of of IN 36297 644 6 sight sight NN 36297 644 7 backward backward RB 36297 644 8 and and CC 36297 644 9 forward forward RB 36297 644 10 and and CC 36297 644 11 over over IN 36297 644 12 an an DT 36297 644 13 extensive extensive JJ 36297 644 14 field field NN 36297 644 15 of of IN 36297 644 16 view view NN 36297 644 17 , , , 36297 644 18 gathering gather VBG 36297 644 19 all all PDT 36297 644 20 the the DT 36297 644 21 distinct distinct JJ 36297 644 22 impressions impression NNS 36297 644 23 into into IN 36297 644 24 one one CD 36297 644 25 mental mental JJ 36297 644 26 image image NN 36297 644 27 . . . 36297 645 1 In in IN 36297 645 2 doing do VBG 36297 645 3 this this DT 36297 645 4 the the DT 36297 645 5 unconscious unconscious JJ 36297 645 6 interpretation interpretation NN 36297 645 7 of of IN 36297 645 8 the the DT 36297 645 9 muscular muscular JJ 36297 645 10 activity activity NN 36297 645 11 attending attend VBG 36297 645 12 accommodation accommodation NN 36297 645 13 and and CC 36297 645 14 convergence convergence NN 36297 645 15 of of IN 36297 645 16 the the DT 36297 645 17 eyes eye NNS 36297 645 18 aids aids NNP 36297 645 19 in in IN 36297 645 20 giving give VBG 36297 645 21 to to IN 36297 645 22 this this DT 36297 645 23 mental mental JJ 36297 645 24 picture picture NN 36297 645 25 the the DT 36297 645 26 appearance appearance NN 36297 645 27 of of IN 36297 645 28 depth depth NN 36297 645 29 by by IN 36297 645 30 establishing establish VBG 36297 645 31 relative relative JJ 36297 645 32 distances distance NNS 36297 645 33 of of IN 36297 645 34 various various JJ 36297 645 35 objects object NNS 36297 645 36 . . . 36297 646 1 Certainly certainly RB 36297 646 2 the the DT 36297 646 3 acquired acquire VBN 36297 646 4 facility facility NN 36297 646 5 is be VBZ 36297 646 6 remarkable remarkable JJ 36297 646 7 . . . 36297 647 1 IV IV NNP 36297 647 2 SOME some NN 36297 647 3 TYPES types NN 36297 647 4 OF of IN 36297 647 5 GEOMETRICAL GEOMETRICAL NNP 36297 647 6 ILLUSIONS illusion VBZ 36297 647 7 No no DT 36297 647 8 simple simple JJ 36297 647 9 classification classification NN 36297 647 10 of of IN 36297 647 11 illusions illusion NNS 36297 647 12 is be VBZ 36297 647 13 ample ample JJ 36297 647 14 or or CC 36297 647 15 satisfactory satisfactory JJ 36297 647 16 , , , 36297 647 17 for for IN 36297 647 18 there there EX 36297 647 19 are be VBP 36297 647 20 many many JJ 36297 647 21 factors factor NNS 36297 647 22 interwoven interwoven RB 36297 647 23 . . . 36297 648 1 For for IN 36297 648 2 this this DT 36297 648 3 reason reason NN 36297 648 4 no no DT 36297 648 5 claims claim NNS 36297 648 6 are be VBP 36297 648 7 made make VBN 36297 648 8 for for IN 36297 648 9 the the DT 36297 648 10 various various JJ 36297 648 11 divisions division NNS 36297 648 12 of of IN 36297 648 13 the the DT 36297 648 14 subject subject NN 36297 648 15 represented represent VBN 36297 648 16 by by IN 36297 648 17 and and CC 36297 648 18 in in IN 36297 648 19 these these DT 36297 648 20 chapters chapter NNS 36297 648 21 excepting except VBG 36297 648 22 that that DT 36297 648 23 of of IN 36297 648 24 convenience convenience NN 36297 648 25 . . . 36297 649 1 Obviously obviously RB 36297 649 2 , , , 36297 649 3 some some DT 36297 649 4 divisions division NNS 36297 649 5 are be VBP 36297 649 6 necessary necessary JJ 36297 649 7 in in IN 36297 649 8 order order NN 36297 649 9 that that IN 36297 649 10 the the DT 36297 649 11 variegated variegate VBN 36297 649 12 subject subject NN 36297 649 13 may may MD 36297 649 14 be be VB 36297 649 15 presentable presentable JJ 36297 649 16 . . . 36297 650 1 The the DT 36297 650 2 classification classification NN 36297 650 3 used use VBD 36297 650 4 appears appear VBZ 36297 650 5 to to TO 36297 650 6 be be VB 36297 650 7 logical logical JJ 36297 650 8 but but CC 36297 650 9 very very RB 36297 650 10 evidently evidently RB 36297 650 11 it -PRON- PRP 36297 650 12 can can MD 36297 650 13 not not RB 36297 650 14 be be VB 36297 650 15 perfectly perfectly RB 36297 650 16 so so RB 36297 650 17 when when WRB 36297 650 18 the the DT 36297 650 19 " " `` 36297 650 20 logic logic NN 36297 650 21 " " '' 36297 650 22 is be VBZ 36297 650 23 not not RB 36297 650 24 wholly wholly RB 36297 650 25 available available JJ 36297 650 26 , , , 36297 650 27 owing owe VBG 36297 650 28 to to IN 36297 650 29 the the DT 36297 650 30 disagreement disagreement NN 36297 650 31 found find VBN 36297 650 32 among among IN 36297 650 33 the the DT 36297 650 34 explanations explanation NNS 36297 650 35 offered offer VBN 36297 650 36 by by IN 36297 650 37 psychologists psychologist NNS 36297 650 38 . . . 36297 651 1 It -PRON- PRP 36297 651 2 may may MD 36297 651 3 be be VB 36297 651 4 argued argue VBN 36297 651 5 that that IN 36297 651 6 the the DT 36297 651 7 " " `` 36297 651 8 geometrical geometrical JJ 36297 651 9 " " '' 36297 651 10 type type NN 36297 651 11 of of IN 36297 651 12 illusion illusion NN 36297 651 13 should should MD 36297 651 14 include include VB 36297 651 15 many many JJ 36297 651 16 illusions illusion NNS 36297 651 17 which which WDT 36297 651 18 are be VBP 36297 651 19 discussed discuss VBN 36297 651 20 in in IN 36297 651 21 other other JJ 36297 651 22 chapters chapter NNS 36297 651 23 . . . 36297 652 1 Indeed indeed RB 36297 652 2 , , , 36297 652 3 this this DT 36297 652 4 is be VBZ 36297 652 5 perhaps perhaps RB 36297 652 6 true true JJ 36297 652 7 . . . 36297 653 1 However however RB 36297 653 2 , , , 36297 653 3 it -PRON- PRP 36297 653 4 appears appear VBZ 36297 653 5 to to TO 36297 653 6 suit suit VB 36297 653 7 the the DT 36297 653 8 present present JJ 36297 653 9 purpose purpose NN 36297 653 10 to to TO 36297 653 11 introduce introduce VB 36297 653 12 this this DT 36297 653 13 phase phase NN 36297 653 14 of of IN 36297 653 15 this this DT 36297 653 16 book book NN 36297 653 17 by by IN 36297 653 18 a a DT 36297 653 19 group group NN 36297 653 20 of of IN 36297 653 21 illusions illusion NNS 36297 653 22 which which WDT 36297 653 23 involve involve VBP 36297 653 24 plane plane NN 36297 653 25 geometrical geometrical JJ 36297 653 26 figures figure NNS 36297 653 27 . . . 36297 654 1 If if IN 36297 654 2 some some DT 36297 654 3 of of IN 36297 654 4 the the DT 36297 654 5 latter latter JJ 36297 654 6 appear appear NN 36297 654 7 in in IN 36297 654 8 other other JJ 36297 654 9 chapters chapter NNS 36297 654 10 , , , 36297 654 11 it -PRON- PRP 36297 654 12 is be VBZ 36297 654 13 because because IN 36297 654 14 they -PRON- PRP 36297 654 15 seem seem VBP 36297 654 16 to to TO 36297 654 17 border border VB 36297 654 18 upon upon IN 36297 654 19 or or CC 36297 654 20 to to TO 36297 654 21 include include VB 36297 654 22 other other JJ 36297 654 23 factors factor NNS 36297 654 24 beyond beyond IN 36297 654 25 those those DT 36297 654 26 apparently apparently RB 36297 654 27 involved involve VBN 36297 654 28 in in IN 36297 654 29 the the DT 36297 654 30 simple simple JJ 36297 654 31 geometrical geometrical JJ 36297 654 32 type type NN 36297 654 33 . . . 36297 655 1 The the DT 36297 655 2 presentation presentation NN 36297 655 3 which which WDT 36297 655 4 follows follow VBZ 36297 655 5 begins begin VBZ 36297 655 6 ( ( -LRB- 36297 655 7 for for IN 36297 655 8 the the DT 36297 655 9 sake sake NN 36297 655 10 of of IN 36297 655 11 clearness clearness NN 36297 655 12 ) ) -RRB- 36297 655 13 with with IN 36297 655 14 a a DT 36297 655 15 few few JJ 36297 655 16 representative representative JJ 36297 655 17 geometrical geometrical JJ 36297 655 18 illusions illusion NNS 36297 655 19 of of IN 36297 655 20 various various JJ 36297 655 21 types type NNS 36297 655 22 . . . 36297 656 1 _ _ NNP 36297 656 2 The the DT 36297 656 3 Effect Effect NNP 36297 656 4 of of IN 36297 656 5 the the DT 36297 656 6 Location location NN 36297 656 7 in in IN 36297 656 8 the the DT 36297 656 9 Visual Visual NNP 36297 656 10 Field._--One Field._--One NNP 36297 656 11 of of IN 36297 656 12 the the DT 36297 656 13 most most RBS 36297 656 14 common common JJ 36297 656 15 illusions illusion NNS 36297 656 16 is be VBZ 36297 656 17 found find VBN 36297 656 18 in in IN 36297 656 19 the the DT 36297 656 20 letter letter NN 36297 656 21 " " `` 36297 656 22 S S NNP 36297 656 23 " " '' 36297 656 24 or or CC 36297 656 25 figure figure VB 36297 656 26 " " `` 36297 656 27 8 8 CD 36297 656 28 . . . 36297 656 29 " " '' 36297 657 1 Ordinarily ordinarily RB 36297 657 2 we -PRON- PRP 36297 657 3 are be VBP 36297 657 4 not not RB 36297 657 5 strongly strongly RB 36297 657 6 conscious conscious JJ 36297 657 7 of of IN 36297 657 8 a a DT 36297 657 9 difference difference NN 36297 657 10 in in IN 36297 657 11 the the DT 36297 657 12 size size NN 36297 657 13 of of IN 36297 657 14 the the DT 36297 657 15 upper upper JJ 36297 657 16 and and CC 36297 657 17 lower low JJR 36297 657 18 parts part NNS 36297 657 19 of of IN 36297 657 20 these these DT 36297 657 21 characters character NNS 36297 657 22 ; ; : 36297 657 23 however however RB 36297 657 24 , , , 36297 657 25 if if IN 36297 657 26 we -PRON- PRP 36297 657 27 invert invert VBP 36297 657 28 them -PRON- PRP 36297 657 29 ( ( -LRB- 36297 657 30 8888 8888 CD 36297 657 31 SSSS SSSS NNP 36297 657 32 ) ) -RRB- 36297 657 33 the the DT 36297 657 34 difference difference NN 36297 657 35 is be VBZ 36297 657 36 seen see VBN 36297 657 37 to to TO 36297 657 38 be be VB 36297 657 39 large large JJ 36297 657 40 . . . 36297 658 1 The the DT 36297 658 2 question question NN 36297 658 3 arises arise VBZ 36297 658 4 , , , 36297 658 5 Is be VBZ 36297 658 6 the the DT 36297 658 7 difference difference NN 36297 658 8 due due JJ 36297 658 9 fundamentally fundamentally RB 36297 658 10 to to IN 36297 658 11 the the DT 36297 658 12 locations location NNS 36297 658 13 of of IN 36297 658 14 the the DT 36297 658 15 two two CD 36297 658 16 parts part NNS 36297 658 17 in in IN 36297 658 18 the the DT 36297 658 19 visual visual JJ 36297 658 20 field field NN 36297 658 21 ? ? . 36297 659 1 It -PRON- PRP 36297 659 2 scarcely scarcely RB 36297 659 3 seems seem VBZ 36297 659 4 credible credible JJ 36297 659 5 that that IN 36297 659 6 visual visual JJ 36297 659 7 perception perception NN 36297 659 8 innately innately RB 36297 659 9 appraises appraise VBZ 36297 659 10 the the DT 36297 659 11 upper upper JJ 36297 659 12 part part NN 36297 659 13 larger large JJR 36297 659 14 than than IN 36297 659 15 the the DT 36297 659 16 lower low JJR 36297 659 17 , , , 36297 659 18 or or CC 36297 659 19 the the DT 36297 659 20 lower low JJR 36297 659 21 smaller small JJR 36297 659 22 than than IN 36297 659 23 the the DT 36297 659 24 upper upper JJ 36297 659 25 part part NN 36297 659 26 when when WRB 36297 659 27 these these DT 36297 659 28 small small JJ 36297 659 29 characters character NNS 36297 659 30 are be VBP 36297 659 31 seen see VBN 36297 659 32 in in IN 36297 659 33 their -PRON- PRP$ 36297 659 34 accustomed accustomed JJ 36297 659 35 position position NN 36297 659 36 . . . 36297 660 1 It -PRON- PRP 36297 660 2 appears appear VBZ 36297 660 3 to to TO 36297 660 4 be be VB 36297 660 5 possible possible JJ 36297 660 6 that that IN 36297 660 7 here here RB 36297 660 8 we -PRON- PRP 36297 660 9 have have VBP 36297 660 10 examples example NNS 36297 660 11 of of IN 36297 660 12 the the DT 36297 660 13 effect effect NN 36297 660 14 of of IN 36297 660 15 learning learning NN 36297 660 16 or or CC 36297 660 17 experience experience NN 36297 660 18 and and CC 36297 660 19 that that IN 36297 660 20 our -PRON- PRP$ 36297 660 21 adaptive adaptive JJ 36297 660 22 visual visual JJ 36297 660 23 sense sense NN 36297 660 24 has have VBZ 36297 660 25 become become VBN 36297 660 26 accustomed accustomed JJ 36297 660 27 to to TO 36297 660 28 overlook overlook VB 36297 660 29 the the DT 36297 660 30 actual actual JJ 36297 660 31 difference difference NN 36297 660 32 . . . 36297 661 1 That that RB 36297 661 2 is is RB 36297 661 3 , , , 36297 661 4 for for IN 36297 661 5 some some DT 36297 661 6 reason reason NN 36297 661 7 through through IN 36297 661 8 being be VBG 36297 661 9 confronted confront VBN 36297 661 10 with with IN 36297 661 11 this this DT 36297 661 12 difference difference NN 36297 661 13 so so RB 36297 661 14 many many JJ 36297 661 15 times time NNS 36297 661 16 , , , 36297 661 17 the the DT 36297 661 18 intellect intellect NN 36297 661 19 has have VBZ 36297 661 20 become become VBN 36297 661 21 adapted adapted JJ 36297 661 22 to to IN 36297 661 23 it -PRON- PRP 36297 661 24 and and CC 36297 661 25 , , , 36297 661 26 therefore therefore RB 36297 661 27 , , , 36297 661 28 has have VBZ 36297 661 29 grown grow VBN 36297 661 30 to to TO 36297 661 31 ignore ignore VB 36297 661 32 it -PRON- PRP 36297 661 33 . . . 36297 662 1 Regardless regardless RB 36297 662 2 of of IN 36297 662 3 the the DT 36297 662 4 explanation explanation NN 36297 662 5 , , , 36297 662 6 the the DT 36297 662 7 illusion illusion NN 36297 662 8 exists exist VBZ 36297 662 9 and and CC 36297 662 10 this this DT 36297 662 11 is be VBZ 36297 662 12 the the DT 36297 662 13 point point NN 36297 662 14 of of IN 36297 662 15 chief chief JJ 36297 662 16 interest interest NN 36297 662 17 . . . 36297 663 1 For for IN 36297 663 2 the the DT 36297 663 3 same same JJ 36297 663 4 reason reason NN 36297 663 5 the the DT 36297 663 6 curvature curvature NN 36297 663 7 of of IN 36297 663 8 the the DT 36297 663 9 retina retina NNP 36297 663 10 does do VBZ 36297 663 11 not not RB 36297 663 12 appear appear VB 36297 663 13 to to TO 36297 663 14 account account VB 36297 663 15 for for IN 36297 663 16 illusion illusion NN 36297 663 17 through through IN 36297 663 18 distortion distortion NN 36297 663 19 of of IN 36297 663 20 the the DT 36297 663 21 image image NN 36297 663 22 , , , 36297 663 23 because because IN 36297 663 24 the the DT 36297 663 25 training training NN 36297 663 26 due due IN 36297 663 27 to to IN 36297 663 28 experience experience NN 36297 663 29 has have VBZ 36297 663 30 caused cause VBN 36297 663 31 greater great JJR 36297 663 32 difficulties difficulty NNS 36297 663 33 than than IN 36297 663 34 this this DT 36297 663 35 to to TO 36297 663 36 disappear disappear VB 36297 663 37 . . . 36297 664 1 We -PRON- PRP 36297 664 2 must must MD 36297 664 3 not not RB 36297 664 4 overlook overlook VB 36297 664 5 the the DT 36297 664 6 tremendous tremendous JJ 36297 664 7 " " `` 36297 664 8 corrective corrective JJ 36297 664 9 " " '' 36297 664 10 influence influence NN 36297 664 11 of of IN 36297 664 12 experience experience NN 36297 664 13 upon upon IN 36297 664 14 which which WDT 36297 664 15 visual visual JJ 36297 664 16 perception perception NN 36297 664 17 for for IN 36297 664 18 the the DT 36297 664 19 adult adult NN 36297 664 20 is be VBZ 36297 664 21 founded found VBN 36297 664 22 . . . 36297 665 1 If if IN 36297 665 2 we -PRON- PRP 36297 665 3 have have VBP 36297 665 4 learned learn VBN 36297 665 5 to to TO 36297 665 6 " " `` 36297 665 7 correct correct VB 36297 665 8 " " '' 36297 665 9 in in IN 36297 665 10 some some DT 36297 665 11 cases case NNS 36297 665 12 , , , 36297 665 13 why why WRB 36297 665 14 not not RB 36297 665 15 in in IN 36297 665 16 all all DT 36297 665 17 cases case NNS 36297 665 18 which which WDT 36297 665 19 we -PRON- PRP 36297 665 20 have have VBP 36297 665 21 encountered encounter VBN 36297 665 22 quite quite RB 36297 665 23 generally generally RB 36297 665 24 ? ? . 36297 666 1 [ [ -LRB- 36297 666 2 Illustration illustration NN 36297 666 3 : : : 36297 666 4 Fig Fig NNP 36297 666 5 . . . 36297 667 1 4.--The 4.--the LS 36297 667 2 vertical vertical JJ 36297 667 3 line line NN 36297 667 4 appears appear VBZ 36297 667 5 longer long JJR 36297 667 6 than than IN 36297 667 7 the the DT 36297 667 8 equal equal JJ 36297 667 9 horizontal horizontal JJ 36297 667 10 line line NN 36297 667 11 in in IN 36297 667 12 each each DT 36297 667 13 case case NN 36297 667 14 . . . 36297 667 15 ] ] -RRB- 36297 668 1 This this DT 36297 668 2 type type NN 36297 668 3 of of IN 36297 668 4 illusion illusion NN 36297 668 5 persists persist VBZ 36297 668 6 in in IN 36297 668 7 geometrical geometrical JJ 36297 668 8 figures figure NNS 36297 668 9 and and CC 36297 668 10 may may MD 36297 668 11 be be VB 36297 668 12 found find VBN 36297 668 13 on on IN 36297 668 14 every every DT 36297 668 15 hand hand NN 36297 668 16 . . . 36297 669 1 A a DT 36297 669 2 perfect perfect JJ 36297 669 3 square square NN 36297 669 4 when when WRB 36297 669 5 viewed view VBN 36297 669 6 vertically vertically RB 36297 669 7 appears appear VBZ 36297 669 8 too too RB 36297 669 9 high high JJ 36297 669 10 , , , 36297 669 11 although although IN 36297 669 12 the the DT 36297 669 13 illusion illusion NN 36297 669 14 does do VBZ 36297 669 15 not not RB 36297 669 16 appear appear VB 36297 669 17 to to TO 36297 669 18 exist exist VB 36297 669 19 in in IN 36297 669 20 the the DT 36297 669 21 circle circle NN 36297 669 22 . . . 36297 670 1 In in IN 36297 670 2 Fig Fig NNP 36297 670 3 . . . 36297 671 1 4 4 LS 36297 671 2 the the DT 36297 671 3 vertical vertical JJ 36297 671 4 line line NN 36297 671 5 appears appear VBZ 36297 671 6 longer long JJR 36297 671 7 than than IN 36297 671 8 the the DT 36297 671 9 horizontal horizontal JJ 36297 671 10 line line NN 36297 671 11 of of IN 36297 671 12 the the DT 36297 671 13 same same JJ 36297 671 14 length length NN 36297 671 15 . . . 36297 672 1 This this DT 36297 672 2 may may MD 36297 672 3 be be VB 36297 672 4 readily readily RB 36297 672 5 demonstrated demonstrate VBN 36297 672 6 by by IN 36297 672 7 the the DT 36297 672 8 reader reader NN 36297 672 9 by by IN 36297 672 10 means mean NNS 36297 672 11 of of IN 36297 672 12 a a DT 36297 672 13 variety variety NN 36297 672 14 of of IN 36297 672 15 figures figure NNS 36297 672 16 . . . 36297 673 1 A a DT 36297 673 2 striking striking JJ 36297 673 3 case case NN 36297 673 4 is be VBZ 36297 673 5 found find VBN 36297 673 6 in in IN 36297 673 7 Fig Fig NNP 36297 673 8 . . . 36297 674 1 5 5 CD 36297 674 2 , , , 36297 674 3 where where WRB 36297 674 4 the the DT 36297 674 5 height height NN 36297 674 6 and and CC 36297 674 7 the the DT 36297 674 8 width width NN 36297 674 9 of of IN 36297 674 10 the the DT 36297 674 11 diagram diagram NN 36297 674 12 of of IN 36297 674 13 a a DT 36297 674 14 silk silk NN 36297 674 15 hat hat NN 36297 674 16 are be VBP 36297 674 17 equal equal JJ 36297 674 18 . . . 36297 675 1 Despite despite IN 36297 675 2 the the DT 36297 675 3 actual actual JJ 36297 675 4 equality equality NN 36297 675 5 the the DT 36297 675 6 height height NN 36297 675 7 appears appear VBZ 36297 675 8 to to TO 36297 675 9 be be VB 36297 675 10 much much RB 36297 675 11 greater great JJR 36297 675 12 than than IN 36297 675 13 the the DT 36297 675 14 width width NN 36297 675 15 . . . 36297 676 1 A a DT 36297 676 2 pole pole NN 36297 676 3 or or CC 36297 676 4 a a DT 36297 676 5 tree tree NN 36297 676 6 is be VBZ 36297 676 7 generally generally RB 36297 676 8 appraised appraise VBN 36297 676 9 as as IN 36297 676 10 of of IN 36297 676 11 greater great JJR 36297 676 12 length length NN 36297 676 13 when when WRB 36297 676 14 it -PRON- PRP 36297 676 15 is be VBZ 36297 676 16 standing stand VBG 36297 676 17 than than IN 36297 676 18 when when WRB 36297 676 19 it -PRON- PRP 36297 676 20 lies lie VBZ 36297 676 21 on on IN 36297 676 22 the the DT 36297 676 23 ground ground NN 36297 676 24 . . . 36297 677 1 This this DT 36297 677 2 illusion illusion NN 36297 677 3 may may MD 36297 677 4 be be VB 36297 677 5 demonstrated demonstrate VBN 36297 677 6 by by IN 36297 677 7 placing place VBG 36297 677 8 a a DT 36297 677 9 black black JJ 36297 677 10 dot dot NN 36297 677 11 an an DT 36297 677 12 inch inch NN 36297 677 13 or or CC 36297 677 14 so so RB 36297 677 15 above above IN 36297 677 16 another another DT 36297 677 17 on on IN 36297 677 18 a a DT 36297 677 19 white white JJ 36297 677 20 paper paper NN 36297 677 21 . . . 36297 678 1 Now now RB 36297 678 2 , , , 36297 678 3 at at IN 36297 678 4 right right JJ 36297 678 5 angles angle NNS 36297 678 6 to to IN 36297 678 7 the the DT 36297 678 8 original original JJ 36297 678 9 dot dot NN 36297 678 10 place place NN 36297 678 11 another another DT 36297 678 12 at at IN 36297 678 13 a a DT 36297 678 14 horizontal horizontal JJ 36297 678 15 distance distance NN 36297 678 16 which which WDT 36297 678 17 appears appear VBZ 36297 678 18 equal equal JJ 36297 678 19 to to IN 36297 678 20 the the DT 36297 678 21 vertical vertical JJ 36297 678 22 distance distance NN 36297 678 23 of of IN 36297 678 24 the the DT 36297 678 25 first first JJ 36297 678 26 dot dot NN 36297 678 27 above above IN 36297 678 28 the the DT 36297 678 29 original original NN 36297 678 30 . . . 36297 679 1 On on IN 36297 679 2 turning turn VBG 36297 679 3 the the DT 36297 679 4 paper paper NN 36297 679 5 through through IN 36297 679 6 ninety ninety CD 36297 679 7 degrees degree NNS 36297 679 8 or or CC 36297 679 9 by by IN 36297 679 10 actual actual JJ 36297 679 11 measurement measurement NN 36297 679 12 , , , 36297 679 13 the the DT 36297 679 14 extent extent NN 36297 679 15 of of IN 36297 679 16 the the DT 36297 679 17 illusion illusion NN 36297 679 18 will will MD 36297 679 19 become become VB 36297 679 20 apparent apparent JJ 36297 679 21 . . . 36297 680 1 By by IN 36297 680 2 doing do VBG 36297 680 3 this this DT 36297 680 4 several several JJ 36297 680 5 times time NNS 36297 680 6 , , , 36297 680 7 using use VBG 36297 680 8 various various JJ 36297 680 9 distances distance NNS 36297 680 10 , , , 36297 680 11 this this DT 36297 680 12 type type NN 36297 680 13 of of IN 36297 680 14 illusion illusion NN 36297 680 15 becomes become VBZ 36297 680 16 convincing convincing JJ 36297 680 17 . . . 36297 681 1 [ [ -LRB- 36297 681 2 Illustration illustration NN 36297 681 3 : : : 36297 681 4 Fig Fig NNP 36297 681 5 . . . 36297 682 1 5.--The 5.--the DT 36297 682 2 vertical vertical JJ 36297 682 3 dimension dimension NN 36297 682 4 is be VBZ 36297 682 5 equal equal JJ 36297 682 6 to to IN 36297 682 7 the the DT 36297 682 8 horizontal horizontal JJ 36297 682 9 one one NN 36297 682 10 , , , 36297 682 11 but but CC 36297 682 12 the the DT 36297 682 13 former former JJ 36297 682 14 appears appear VBZ 36297 682 15 greater great JJR 36297 682 16 . . . 36297 682 17 ] ] -RRB- 36297 683 1 The the DT 36297 683 2 explanation explanation NN 36297 683 3 accepted accept VBN 36297 683 4 by by IN 36297 683 5 some some DT 36297 683 6 is be VBZ 36297 683 7 that that IN 36297 683 8 more more JJR 36297 683 9 effort effort NN 36297 683 10 is be VBZ 36297 683 11 required require VBN 36297 683 12 to to TO 36297 683 13 raise raise VB 36297 683 14 the the DT 36297 683 15 eyes eye NNS 36297 683 16 , , , 36297 683 17 or or CC 36297 683 18 point point NN 36297 683 19 of of IN 36297 683 20 sight sight NN 36297 683 21 , , , 36297 683 22 through through IN 36297 683 23 a a DT 36297 683 24 certain certain JJ 36297 683 25 vertical vertical JJ 36297 683 26 distance distance NN 36297 683 27 than than IN 36297 683 28 through through IN 36297 683 29 an an DT 36297 683 30 equal equal JJ 36297 683 31 horizontal horizontal JJ 36297 683 32 distance distance NN 36297 683 33 . . . 36297 684 1 Perhaps perhaps RB 36297 684 2 we -PRON- PRP 36297 684 3 unconsciously unconsciously RB 36297 684 4 appraise appraise VBP 36297 684 5 effort effort NN 36297 684 6 of of IN 36297 684 7 this this DT 36297 684 8 sort sort NN 36297 684 9 in in IN 36297 684 10 terms term NNS 36297 684 11 of of IN 36297 684 12 distance distance NN 36297 684 13 , , , 36297 684 14 but but CC 36297 684 15 is be VBZ 36297 684 16 it -PRON- PRP 36297 684 17 not not RB 36297 684 18 logical logical JJ 36297 684 19 to to TO 36297 684 20 inquire inquire VB 36297 684 21 why why WRB 36297 684 22 we -PRON- PRP 36297 684 23 have have VBP 36297 684 24 not not RB 36297 684 25 through through IN 36297 684 26 experience experience NN 36297 684 27 learned learn VBN 36297 684 28 to to TO 36297 684 29 sense sense VB 36297 684 30 the the DT 36297 684 31 difference difference NN 36297 684 32 between between IN 36297 684 33 the the DT 36297 684 34 relation relation NN 36297 684 35 of of IN 36297 684 36 effort effort NN 36297 684 37 to to IN 36297 684 38 horizontal horizontal JJ 36297 684 39 distance distance NN 36297 684 40 and and CC 36297 684 41 that that DT 36297 684 42 of of IN 36297 684 43 effort effort NN 36297 684 44 to to IN 36297 684 45 vertical vertical JJ 36297 684 46 distance distance NN 36297 684 47 through through IN 36297 684 48 which which WDT 36297 684 49 the the DT 36297 684 50 point point NN 36297 684 51 of of IN 36297 684 52 sight sight NN 36297 684 53 is be VBZ 36297 684 54 moved move VBN 36297 684 55 ? ? . 36297 685 1 We -PRON- PRP 36297 685 2 are be VBP 36297 685 3 doing do VBG 36297 685 4 this this DT 36297 685 5 continuously continuously RB 36297 685 6 , , , 36297 685 7 so so RB 36297 685 8 why why WRB 36297 685 9 do do VBP 36297 685 10 we -PRON- PRP 36297 685 11 not not RB 36297 685 12 learn learn VB 36297 685 13 to to TO 36297 685 14 distinguish distinguish VB 36297 685 15 ; ; : 36297 685 16 furthermore furthermore RB 36297 685 17 , , , 36297 685 18 we -PRON- PRP 36297 685 19 have have VBP 36297 685 20 overcome overcome VBN 36297 685 21 other other JJ 36297 685 22 great great JJ 36297 685 23 obstacles obstacle NNS 36297 685 24 in in IN 36297 685 25 developing develop VBG 36297 685 26 our -PRON- PRP$ 36297 685 27 visual visual JJ 36297 685 28 sense sense NN 36297 685 29 . . . 36297 686 1 In in IN 36297 686 2 this this DT 36297 686 3 complex complex JJ 36297 686 4 field field NN 36297 686 5 of of IN 36297 686 6 physiological physiological JJ 36297 686 7 psychology psychology NN 36297 686 8 questions question NNS 36297 686 9 are be VBP 36297 686 10 not not RB 36297 686 11 only only RB 36297 686 12 annoying annoying JJ 36297 686 13 , , , 36297 686 14 but but CC 36297 686 15 often often RB 36297 686 16 disruptive disruptive JJ 36297 686 17 . . . 36297 687 1 As as IN 36297 687 2 has have VBZ 36297 687 3 been be VBN 36297 687 4 pointed point VBN 36297 687 5 out out RP 36297 687 6 in in IN 36297 687 7 Chapter Chapter NNP 36297 687 8 II II NNP 36297 687 9 , , , 36297 687 10 images image NNS 36297 687 11 of of IN 36297 687 12 objects object NNS 36297 687 13 lying lie VBG 36297 687 14 near near IN 36297 687 15 the the DT 36297 687 16 periphery periphery NN 36297 687 17 of of IN 36297 687 18 the the DT 36297 687 19 visual visual JJ 36297 687 20 field field NN 36297 687 21 are be VBP 36297 687 22 more more RBR 36297 687 23 or or CC 36297 687 24 less less RBR 36297 687 25 distorted distorted JJ 36297 687 26 , , , 36297 687 27 owing owe VBG 36297 687 28 to to IN 36297 687 29 the the DT 36297 687 30 structure structure NN 36297 687 31 and and CC 36297 687 32 to to IN 36297 687 33 certain certain JJ 36297 687 34 defects defect NNS 36297 687 35 of of IN 36297 687 36 parts part NNS 36297 687 37 of of IN 36297 687 38 the the DT 36297 687 39 eye eye NN 36297 687 40 . . . 36297 688 1 For for IN 36297 688 2 example example NN 36297 688 3 , , , 36297 688 4 a a DT 36297 688 5 checkerboard checkerboard NN 36297 688 6 viewed view VBN 36297 688 7 at at IN 36297 688 8 a a DT 36297 688 9 proper proper JJ 36297 688 10 distance distance NN 36297 688 11 with with IN 36297 688 12 respect respect NN 36297 688 13 to to IN 36297 688 14 its -PRON- PRP$ 36297 688 15 size size NN 36297 688 16 appears appear VBZ 36297 688 17 quite quite RB 36297 688 18 distorted distorted JJ 36297 688 19 in in IN 36297 688 20 its -PRON- PRP$ 36297 688 21 outer outer JJ 36297 688 22 regions region NNS 36297 688 23 . . . 36297 689 1 Cheap cheap JJ 36297 689 2 cameras camera NNS 36297 689 3 are be VBP 36297 689 4 likely likely JJ 36297 689 5 to to TO 36297 689 6 cause cause VB 36297 689 7 similar similar JJ 36297 689 8 errors error NNS 36297 689 9 in in IN 36297 689 10 the the DT 36297 689 11 images image NNS 36297 689 12 fixed fix VBN 36297 689 13 upon upon IN 36297 689 14 the the DT 36297 689 15 photographic photographic JJ 36297 689 16 plate plate NN 36297 689 17 . . . 36297 690 1 Photographs photograph NNS 36297 690 2 are be VBP 36297 690 3 interesting interesting JJ 36297 690 4 in in IN 36297 690 5 connection connection NN 36297 690 6 with with IN 36297 690 7 visual visual JJ 36297 690 8 illusions illusion NNS 36297 690 9 , , , 36297 690 10 because because IN 36297 690 11 of of IN 36297 690 12 certain certain JJ 36297 690 13 distortions distortion NNS 36297 690 14 and and CC 36297 690 15 of of IN 36297 690 16 the the DT 36297 690 17 magnification magnification NN 36297 690 18 of of IN 36297 690 19 such such JJ 36297 690 20 aspects aspect NNS 36297 690 21 as as IN 36297 690 22 perspective perspective NN 36297 690 23 . . . 36297 691 1 Incidentally incidentally RB 36297 691 2 in in IN 36297 691 3 looking look VBG 36297 691 4 for for IN 36297 691 5 illusions illusion NNS 36297 691 6 , , , 36297 691 7 difficulty difficulty NN 36297 691 8 is be VBZ 36297 691 9 sometimes sometimes RB 36297 691 10 experienced experience VBN 36297 691 11 in in IN 36297 691 12 seeing see VBG 36297 691 13 them -PRON- PRP 36297 691 14 when when WRB 36297 691 15 the the DT 36297 691 16 actual actual JJ 36297 691 17 physical physical JJ 36297 691 18 truths truth NNS 36297 691 19 are be VBP 36297 691 20 known know VBN 36297 691 21 ; ; : 36297 691 22 that that RB 36297 691 23 is is RB 36297 691 24 , , , 36297 691 25 in in IN 36297 691 26 distinguishing distinguish VBG 36297 691 27 between between IN 36297 691 28 what what WP 36297 691 29 is be VBZ 36297 691 30 actually actually RB 36297 691 31 seen see VBN 36297 691 32 and and CC 36297 691 33 what what WP 36297 691 34 actually actually RB 36297 691 35 exists exist VBZ 36297 691 36 . . . 36297 692 1 The the DT 36297 692 2 ability ability NN 36297 692 3 to to TO 36297 692 4 make make VB 36297 692 5 this this DT 36297 692 6 separation separation NN 36297 692 7 grows grow VBZ 36297 692 8 with with IN 36297 692 9 practice practice NN 36297 692 10 but but CC 36297 692 11 where where WRB 36297 692 12 the the DT 36297 692 13 difficulty difficulty NN 36297 692 14 is be VBZ 36297 692 15 obstinate obstinate NN 36297 692 16 , , , 36297 692 17 it -PRON- PRP 36297 692 18 is be VBZ 36297 692 19 well well JJ 36297 692 20 for for IN 36297 692 21 the the DT 36297 692 22 reader reader NN 36297 692 23 to to TO 36297 692 24 try try VB 36297 692 25 observers observer NNS 36297 692 26 who who WP 36297 692 27 do do VBP 36297 692 28 not not RB 36297 692 29 suspect suspect VB 36297 692 30 the the DT 36297 692 31 truth truth NN 36297 692 32 . . . 36297 693 1 _ _ NNP 36297 693 2 Illusions Illusions NNPS 36297 693 3 of of IN 36297 693 4 Interrupted Interrupted NNP 36297 693 5 Extent._--Distance Extent._--Distance NNP 36297 693 6 and and CC 36297 693 7 area area NN 36297 693 8 appear appear VBP 36297 693 9 to to TO 36297 693 10 vary vary VB 36297 693 11 in in IN 36297 693 12 extent extent NN 36297 693 13 , , , 36297 693 14 depending depend VBG 36297 693 15 upon upon IN 36297 693 16 whether whether IN 36297 693 17 they -PRON- PRP 36297 693 18 are be VBP 36297 693 19 filled fill VBN 36297 693 20 or or CC 36297 693 21 empty empty JJ 36297 693 22 or or CC 36297 693 23 are be VBP 36297 693 24 only only RB 36297 693 25 partially partially RB 36297 693 26 filled fill VBN 36297 693 27 . . . 36297 694 1 For for IN 36297 694 2 example example NN 36297 694 3 , , , 36297 694 4 a a DT 36297 694 5 series series NN 36297 694 6 of of IN 36297 694 7 dots dot NNS 36297 694 8 will will MD 36297 694 9 generally generally RB 36297 694 10 appear appear VB 36297 694 11 longer long RBR 36297 694 12 overall overall RB 36297 694 13 than than IN 36297 694 14 an an DT 36297 694 15 equal equal JJ 36297 694 16 distance distance NN 36297 694 17 between between IN 36297 694 18 two two CD 36297 694 19 points point NNS 36297 694 20 . . . 36297 695 1 This this DT 36297 695 2 may may MD 36297 695 3 be be VB 36297 695 4 easily easily RB 36297 695 5 demonstrated demonstrate VBN 36297 695 6 by by IN 36297 695 7 arranging arrange VBG 36297 695 8 three three CD 36297 695 9 dots dot NNS 36297 695 10 in in IN 36297 695 11 a a DT 36297 695 12 straight straight JJ 36297 695 13 line line NN 36297 695 14 on on IN 36297 695 15 paper paper NN 36297 695 16 , , , 36297 695 17 the the DT 36297 695 18 two two CD 36297 695 19 intervening intervene VBG 36297 695 20 spaces space NNS 36297 695 21 being be VBG 36297 695 22 of of IN 36297 695 23 equal equal JJ 36297 695 24 extent extent NN 36297 695 25 , , , 36297 695 26 say say VBP 36297 695 27 about about RB 36297 695 28 one one CD 36297 695 29 or or CC 36297 695 30 two two CD 36297 695 31 inches inch NNS 36297 695 32 long long JJ 36297 695 33 . . . 36297 696 1 If if IN 36297 696 2 in in IN 36297 696 3 one one CD 36297 696 4 of of IN 36297 696 5 the the DT 36297 696 6 spaces space NNS 36297 696 7 a a DT 36297 696 8 series series NN 36297 696 9 of of IN 36297 696 10 a a DT 36297 696 11 dozen dozen NN 36297 696 12 dots dot NNS 36297 696 13 is be VBZ 36297 696 14 placed place VBN 36297 696 15 , , , 36297 696 16 this this DT 36297 696 17 space space NN 36297 696 18 will will MD 36297 696 19 appear appear VB 36297 696 20 longer long RBR 36297 696 21 than than IN 36297 696 22 the the DT 36297 696 23 empty empty JJ 36297 696 24 space space NN 36297 696 25 . . . 36297 697 1 However however RB 36297 697 2 , , , 36297 697 3 if if IN 36297 697 4 only only RB 36297 697 5 one one CD 36297 697 6 dot dot NN 36297 697 7 is be VBZ 36297 697 8 placed place VBN 36297 697 9 in in IN 36297 697 10 the the DT 36297 697 11 middle middle NN 36297 697 12 of of IN 36297 697 13 one one CD 36297 697 14 of of IN 36297 697 15 the the DT 36297 697 16 empty empty JJ 36297 697 17 spaces space NNS 36297 697 18 , , , 36297 697 19 this this DT 36297 697 20 space space NN 36297 697 21 now now RB 36297 697 22 is be VBZ 36297 697 23 likely likely JJ 36297 697 24 to to TO 36297 697 25 appear appear VB 36297 697 26 of of IN 36297 697 27 less less JJR 36297 697 28 extent extent NN 36297 697 29 than than IN 36297 697 30 the the DT 36297 697 31 empty empty JJ 36297 697 32 space space NN 36297 697 33 . . . 36297 698 1 ( ( -LRB- 36297 698 2 See see VB 36297 698 3 Fig fig NN 36297 698 4 . . . 36297 699 1 7 7 LS 36297 699 2 . . . 36297 699 3 ) ) -RRB- 36297 700 1 A a DT 36297 700 2 specific specific JJ 36297 700 3 example example NN 36297 700 4 of of IN 36297 700 5 this this DT 36297 700 6 type type NN 36297 700 7 of of IN 36297 700 8 illusion illusion NN 36297 700 9 is be VBZ 36297 700 10 shown show VBN 36297 700 11 in in IN 36297 700 12 Fig Fig NNP 36297 700 13 . . . 36297 701 1 6 6 CD 36297 701 2 . . . 36297 702 1 The the DT 36297 702 2 filled fill VBN 36297 702 3 or or CC 36297 702 4 divided divide VBN 36297 702 5 space space NN 36297 702 6 generally generally RB 36297 702 7 appears appear VBZ 36297 702 8 greater great JJR 36297 702 9 than than IN 36297 702 10 the the DT 36297 702 11 empty empty JJ 36297 702 12 or or CC 36297 702 13 undivided undivided JJ 36297 702 14 space space NN 36297 702 15 , , , 36297 702 16 but but CC 36297 702 17 certain certain JJ 36297 702 18 qualifications qualification NNS 36297 702 19 of of IN 36297 702 20 this this DT 36297 702 21 statement statement NN 36297 702 22 are be VBP 36297 702 23 necessary necessary JJ 36297 702 24 . . . 36297 703 1 In in IN 36297 703 2 _ _ NNP 36297 703 3 a a DT 36297 703 4 _ _ NNP 36297 703 5 the the DT 36297 703 6 divided divide VBN 36297 703 7 space space NN 36297 703 8 unquestionably unquestionably RB 36297 703 9 appears appear VBZ 36297 703 10 greater great JJR 36297 703 11 than than IN 36297 703 12 the the DT 36297 703 13 empty empty JJ 36297 703 14 space space NN 36297 703 15 . . . 36297 704 1 Apparently apparently RB 36297 704 2 the the DT 36297 704 3 filled filled JJ 36297 704 4 or or CC 36297 704 5 empty empty JJ 36297 704 6 space space NN 36297 704 7 is be VBZ 36297 704 8 more more RBR 36297 704 9 important important JJ 36297 704 10 than than IN 36297 704 11 the the DT 36297 704 12 amount amount NN 36297 704 13 of of IN 36297 704 14 light light NN 36297 704 15 which which WDT 36297 704 16 is be VBZ 36297 704 17 received receive VBN 36297 704 18 from from IN 36297 704 19 the the DT 36297 704 20 clear clear JJ 36297 704 21 spaces space NNS 36297 704 22 , , , 36297 704 23 for for IN 36297 704 24 a a DT 36297 704 25 black black JJ 36297 704 26 line line NN 36297 704 27 on on IN 36297 704 28 white white JJ 36297 704 29 paper paper NN 36297 704 30 appears appear VBZ 36297 704 31 longer long JJR 36297 704 32 than than IN 36297 704 33 a a DT 36297 704 34 white white JJ 36297 704 35 space space NN 36297 704 36 between between IN 36297 704 37 two two CD 36297 704 38 points point NNS 36297 704 39 separated separate VBD 36297 704 40 a a DT 36297 704 41 distance distance NN 36297 704 42 equal equal JJ 36297 704 43 to to IN 36297 704 44 the the DT 36297 704 45 length length NN 36297 704 46 of of IN 36297 704 47 the the DT 36297 704 48 black black JJ 36297 704 49 line line NN 36297 704 50 . . . 36297 705 1 Furthermore furthermore RB 36297 705 2 , , , 36297 705 3 apparently apparently RB 36297 705 4 the the DT 36297 705 5 spacing spacing NN 36297 705 6 which which WDT 36297 705 7 is be VBZ 36297 705 8 the the DT 36297 705 9 most most RBS 36297 705 10 obtrusive obtrusive JJ 36297 705 11 is be VBZ 36297 705 12 most most RBS 36297 705 13 influential influential JJ 36297 705 14 in in IN 36297 705 15 causing cause VBG 36297 705 16 the the DT 36297 705 17 divided divide VBN 36297 705 18 space space NN 36297 705 19 to to TO 36297 705 20 appear appear VB 36297 705 21 greater great JJR 36297 705 22 for for IN 36297 705 23 _ _ NNP 36297 705 24 a a DT 36297 705 25 _ _ NNP 36297 705 26 than than IN 36297 705 27 for for IN 36297 705 28 _ _ NNP 36297 705 29 b b NNP 36297 705 30 _ _ NNP 36297 705 31 . . . 36297 706 1 The the DT 36297 706 2 illusion illusion NN 36297 706 3 still still RB 36297 706 4 persists persist VBZ 36297 706 5 in in IN 36297 706 6 _ _ NNP 36297 706 7 c c NNP 36297 706 8 _ _ NNP 36297 706 9 . . . 36297 707 1 [ [ -LRB- 36297 707 2 Illustration illustration NN 36297 707 3 : : : 36297 707 4 Fig Fig NNP 36297 707 5 . . . 36297 708 1 6.--The 6.--the CD 36297 708 2 divided divide VBD 36297 708 3 or or CC 36297 708 4 filled fill VBN 36297 708 5 space space NN 36297 708 6 on on IN 36297 708 7 the the DT 36297 708 8 left left NN 36297 708 9 appears appear VBZ 36297 708 10 longer long RBR 36297 708 11 than than IN 36297 708 12 the the DT 36297 708 13 equal equal JJ 36297 708 14 space space NN 36297 708 15 on on IN 36297 708 16 the the DT 36297 708 17 right right NN 36297 708 18 . . . 36297 708 19 ] ] -RRB- 36297 709 1 An an DT 36297 709 2 idea idea NN 36297 709 3 of of IN 36297 709 4 the the DT 36297 709 5 magnitude magnitude NN 36297 709 6 may may MD 36297 709 7 be be VB 36297 709 8 gained gain VBN 36297 709 9 from from IN 36297 709 10 certain certain JJ 36297 709 11 experiments experiment NNS 36297 709 12 by by IN 36297 709 13 Aubert Aubert NNP 36297 709 14 . . . 36297 710 1 He -PRON- PRP 36297 710 2 used use VBD 36297 710 3 a a DT 36297 710 4 figure figure NN 36297 710 5 similar similar JJ 36297 710 6 to to IN 36297 710 7 _ _ NNP 36297 710 8 a a DT 36297 710 9 _ _ NNP 36297 710 10 Fig Fig NNP 36297 710 11 . . . 36297 711 1 6 6 CD 36297 711 2 containing contain VBG 36297 711 3 a a DT 36297 711 4 total total NN 36297 711 5 of of IN 36297 711 6 five five CD 36297 711 7 short short JJ 36297 711 8 lines line NNS 36297 711 9 . . . 36297 712 1 Four four CD 36297 712 2 of of IN 36297 712 3 them -PRON- PRP 36297 712 4 were be VBD 36297 712 5 equally equally RB 36297 712 6 spaced space VBN 36297 712 7 over over IN 36297 712 8 a a DT 36297 712 9 distance distance NN 36297 712 10 of of IN 36297 712 11 100 100 CD 36297 712 12 mm mm NNS 36297 712 13 . . . 36297 713 1 corresponding correspond VBG 36297 713 2 to to IN 36297 713 3 the the DT 36297 713 4 left left JJ 36297 713 5 half half NN 36297 713 6 of of IN 36297 713 7 _ _ NNP 36297 713 8 a a DT 36297 713 9 _ _ NNP 36297 713 10 , , , 36297 713 11 Fig Fig NNP 36297 713 12 . . . 36297 714 1 6 6 CD 36297 714 2 . . . 36297 715 1 The the DT 36297 715 2 remaining remain VBG 36297 715 3 line line NN 36297 715 4 was be VBD 36297 715 5 placed place VBN 36297 715 6 at at IN 36297 715 7 the the DT 36297 715 8 extreme extreme JJ 36297 715 9 right right NN 36297 715 10 and and CC 36297 715 11 defined define VBD 36297 715 12 the the DT 36297 715 13 limit limit NN 36297 715 14 of of IN 36297 715 15 an an DT 36297 715 16 empty empty JJ 36297 715 17 space space NN 36297 715 18 also also RB 36297 715 19 100 100 CD 36297 715 20 mm mm CD 36297 715 21 . . . 36297 716 1 long long RB 36297 716 2 . . . 36297 717 1 In in IN 36297 717 2 all all DT 36297 717 3 cases case NNS 36297 717 4 , , , 36297 717 5 the the DT 36297 717 6 length length NN 36297 717 7 of of IN 36297 717 8 the the DT 36297 717 9 empty empty JJ 36297 717 10 space space NN 36297 717 11 appeared appear VBD 36297 717 12 about about RB 36297 717 13 ten ten CD 36297 717 14 per per IN 36297 717 15 cent cent NN 36297 717 16 less less JJR 36297 717 17 than than IN 36297 717 18 that that DT 36297 717 19 of of IN 36297 717 20 the the DT 36297 717 21 space space NN 36297 717 22 occupied occupy VBN 36297 717 23 by by IN 36297 717 24 the the DT 36297 717 25 four four CD 36297 717 26 lines line NNS 36297 717 27 equally equally RB 36297 717 28 spaced space VBN 36297 717 29 . . . 36297 718 1 Various various JJ 36297 718 2 experimenters experimenter NNS 36297 718 3 obtain obtain VBP 36297 718 4 different different JJ 36297 718 5 results result NNS 36297 718 6 , , , 36297 718 7 and and CC 36297 718 8 it -PRON- PRP 36297 718 9 seems seem VBZ 36297 718 10 reasonable reasonable JJ 36297 718 11 that that IN 36297 718 12 the the DT 36297 718 13 differences difference NNS 36297 718 14 may may MD 36297 718 15 be be VB 36297 718 16 accounted account VBN 36297 718 17 for for IN 36297 718 18 , , , 36297 718 19 partially partially RB 36297 718 20 at at IN 36297 718 21 least least JJS 36297 718 22 , , , 36297 718 23 by by IN 36297 718 24 different different JJ 36297 718 25 degrees degree NNS 36297 718 26 of of IN 36297 718 27 unconscious unconscious JJ 36297 718 28 correction correction NN 36297 718 29 of of IN 36297 718 30 the the DT 36297 718 31 illusion illusion NN 36297 718 32 . . . 36297 719 1 This this DT 36297 719 2 emphasizes emphasize VBZ 36297 719 3 the the DT 36297 719 4 desirability desirability NN 36297 719 5 of of IN 36297 719 6 using use VBG 36297 719 7 subjects subject NNS 36297 719 8 for for IN 36297 719 9 such such JJ 36297 719 10 experiments experiment NNS 36297 719 11 who who WP 36297 719 12 have have VBP 36297 719 13 no no DT 36297 719 14 knowledge knowledge NN 36297 719 15 pertaining pertain VBG 36297 719 16 to to IN 36297 719 17 the the DT 36297 719 18 illusion illusion NN 36297 719 19 . . . 36297 720 1 [ [ -LRB- 36297 720 2 Illustration illustration NN 36297 720 3 : : : 36297 720 4 Fig Fig NNP 36297 720 5 . . . 36297 721 1 7.--The 7.--the DT 36297 721 2 three three CD 36297 721 3 lines line NNS 36297 721 4 are be VBP 36297 721 5 of of IN 36297 721 6 equal equal JJ 36297 721 7 length length NN 36297 721 8 . . . 36297 721 9 ] ] -RRB- 36297 722 1 [ [ -LRB- 36297 722 2 Illustration illustration NN 36297 722 3 : : : 36297 722 4 Fig Fig NNP 36297 722 5 . . . 36297 723 1 8.--The 8.--the CD 36297 723 2 distance distance NN 36297 723 3 between between IN 36297 723 4 the the DT 36297 723 5 two two CD 36297 723 6 circles circle NNS 36297 723 7 on on IN 36297 723 8 the the DT 36297 723 9 left left NN 36297 723 10 is be VBZ 36297 723 11 equal equal JJ 36297 723 12 to to IN 36297 723 13 the the DT 36297 723 14 distance distance NN 36297 723 15 between between IN 36297 723 16 the the DT 36297 723 17 outside outside JJ 36297 723 18 edges edge NNS 36297 723 19 of of IN 36297 723 20 the the DT 36297 723 21 two two CD 36297 723 22 circles circle NNS 36297 723 23 on on IN 36297 723 24 the the DT 36297 723 25 right right NN 36297 723 26 . . . 36297 723 27 ] ] -RRB- 36297 724 1 As as IN 36297 724 2 already already RB 36297 724 3 stated state VBN 36297 724 4 there there EX 36297 724 5 are be VBP 36297 724 6 apparent apparent JJ 36297 724 7 exceptions exception NNS 36297 724 8 to to IN 36297 724 9 any any DT 36297 724 10 simple simple JJ 36297 724 11 rule rule NN 36297 724 12 , , , 36297 724 13 for for IN 36297 724 14 , , , 36297 724 15 as as IN 36297 724 16 in in IN 36297 724 17 the the DT 36297 724 18 case case NN 36297 724 19 of of IN 36297 724 20 dots dot NNS 36297 724 21 cited cite VBN 36297 724 22 in in IN 36297 724 23 a a DT 36297 724 24 preceding precede VBG 36297 724 25 paragraph paragraph NN 36297 724 26 , , , 36297 724 27 the the DT 36297 724 28 illusion illusion NN 36297 724 29 depends depend VBZ 36297 724 30 upon upon IN 36297 724 31 the the DT 36297 724 32 manner manner NN 36297 724 33 in in IN 36297 724 34 which which WDT 36297 724 35 the the DT 36297 724 36 division division NN 36297 724 37 is be VBZ 36297 724 38 made make VBN 36297 724 39 . . . 36297 725 1 For for IN 36297 725 2 example example NN 36297 725 3 , , , 36297 725 4 in in IN 36297 725 5 Fig Fig NNP 36297 725 6 . . . 36297 726 1 7 7 LS 36297 726 2 , , , 36297 726 3 _ _ NNP 36297 726 4 a a DT 36297 726 5 _ _ NNP 36297 726 6 and and CC 36297 726 7 _ _ NNP 36297 726 8 c c NNP 36297 726 9 _ _ NNP 36297 726 10 are be VBP 36297 726 11 as as RB 36297 726 12 likely likely JJ 36297 726 13 to to TO 36297 726 14 appear appear VB 36297 726 15 shorter short JJR 36297 726 16 than than IN 36297 726 17 _ _ NNP 36297 726 18 b b NNP 36297 726 19 _ _ NNP 36297 726 20 as as RB 36297 726 21 equal equal JJ 36297 726 22 to to IN 36297 726 23 it -PRON- PRP 36297 726 24 . . . 36297 727 1 It -PRON- PRP 36297 727 2 has have VBZ 36297 727 3 been be VBN 36297 727 4 concluded conclude VBN 36297 727 5 by by IN 36297 727 6 certain certain JJ 36297 727 7 investigators investigator NNS 36297 727 8 that that WDT 36297 727 9 when when WRB 36297 727 10 subdivision subdivision NN 36297 727 11 of of IN 36297 727 12 a a DT 36297 727 13 line line NN 36297 727 14 causes cause VBZ 36297 727 15 it -PRON- PRP 36297 727 16 to to TO 36297 727 17 appear appear VB 36297 727 18 longer long RBR 36297 727 19 , , , 36297 727 20 the the DT 36297 727 21 parts part NNS 36297 727 22 into into IN 36297 727 23 which which WDT 36297 727 24 it -PRON- PRP 36297 727 25 is be VBZ 36297 727 26 divided divided JJ 36297 727 27 or or CC 36297 727 28 some some DT 36297 727 29 of of IN 36297 727 30 them -PRON- PRP 36297 727 31 are be VBP 36297 727 32 likely likely JJ 36297 727 33 to to TO 36297 727 34 appear appear VB 36297 727 35 shorter short JJR 36297 727 36 than than IN 36297 727 37 isolated isolated JJ 36297 727 38 lines line NNS 36297 727 39 of of IN 36297 727 40 the the DT 36297 727 41 same same JJ 36297 727 42 length length NN 36297 727 43 . . . 36297 728 1 The the DT 36297 728 2 reverse reverse NN 36297 728 3 of of IN 36297 728 4 this this DT 36297 728 5 statement statement NN 36297 728 6 also also RB 36297 728 7 appears appear VBZ 36297 728 8 to to TO 36297 728 9 hold hold VB 36297 728 10 . . . 36297 729 1 For for IN 36297 729 2 example example NN 36297 729 3 in in IN 36297 729 4 Fig Fig NNP 36297 729 5 . . . 36297 730 1 7 7 LS 36297 730 2 , , , 36297 730 3 _ _ NNP 36297 730 4 a a DT 36297 730 5 _ _ NNP 36297 730 6 appears appear VBZ 36297 730 7 shorter short JJR 36297 730 8 than than IN 36297 730 9 _ _ NNP 36297 730 10 b b NNP 36297 730 11 _ _ NNP 36297 730 12 and and CC 36297 730 13 the the DT 36297 730 14 central central JJ 36297 730 15 part part NN 36297 730 16 appears appear VBZ 36297 730 17 lengthened lengthen VBN 36297 730 18 , , , 36297 730 19 although although IN 36297 730 20 the the DT 36297 730 21 total total JJ 36297 730 22 line line NN 36297 730 23 appears appear VBZ 36297 730 24 shortened shorten VBN 36297 730 25 . . . 36297 731 1 This this DT 36297 731 2 illusion illusion NN 36297 731 3 is be VBZ 36297 731 4 intensified intensify VBN 36297 731 5 by by IN 36297 731 6 leaving leave VBG 36297 731 7 the the DT 36297 731 8 central central JJ 36297 731 9 section section NN 36297 731 10 blank blank JJ 36297 731 11 . . . 36297 732 1 A a DT 36297 732 2 figure figure NN 36297 732 3 of of IN 36297 732 4 this this DT 36297 732 5 sort sort NN 36297 732 6 can can MD 36297 732 7 be be VB 36297 732 8 readily readily RB 36297 732 9 drawn draw VBN 36297 732 10 by by IN 36297 732 11 the the DT 36297 732 12 reader reader NN 36297 732 13 by by IN 36297 732 14 using use VBG 36297 732 15 short short JJ 36297 732 16 straight straight JJ 36297 732 17 lines line NNS 36297 732 18 in in IN 36297 732 19 place place NN 36297 732 20 of of IN 36297 732 21 the the DT 36297 732 22 circles circle NNS 36297 732 23 in in IN 36297 732 24 Fig Fig NNP 36297 732 25 . . . 36297 733 1 8 8 LS 36297 733 2 . . . 36297 734 1 In in IN 36297 734 2 this this DT 36297 734 3 figure figure NN 36297 734 4 the the DT 36297 734 5 space space NN 36297 734 6 between between IN 36297 734 7 the the DT 36297 734 8 inside inside JJ 36297 734 9 edges edge NNS 36297 734 10 of of IN 36297 734 11 the the DT 36297 734 12 two two CD 36297 734 13 circles circle NNS 36297 734 14 on on IN 36297 734 15 the the DT 36297 734 16 left left NN 36297 734 17 appears appear VBZ 36297 734 18 larger large JJR 36297 734 19 than than IN 36297 734 20 the the DT 36297 734 21 overall overall JJ 36297 734 22 distance distance NN 36297 734 23 between between IN 36297 734 24 the the DT 36297 734 25 outside outside JJ 36297 734 26 edges edge NNS 36297 734 27 of of IN 36297 734 28 the the DT 36297 734 29 two two CD 36297 734 30 circles circle NNS 36297 734 31 on on IN 36297 734 32 the the DT 36297 734 33 right right NN 36297 734 34 , , , 36297 734 35 despite despite IN 36297 734 36 the the DT 36297 734 37 fact fact NN 36297 734 38 that that IN 36297 734 39 these these DT 36297 734 40 distances distance NNS 36297 734 41 are be VBP 36297 734 42 equal equal JJ 36297 734 43 . . . 36297 735 1 It -PRON- PRP 36297 735 2 appears appear VBZ 36297 735 3 that that IN 36297 735 4 mere mere JJ 36297 735 5 intensity intensity NN 36297 735 6 of of IN 36297 735 7 retinal retinal JJ 36297 735 8 stimulation stimulation NN 36297 735 9 does do VBZ 36297 735 10 not not RB 36297 735 11 account account VB 36297 735 12 for for IN 36297 735 13 these these DT 36297 735 14 illusions illusion NNS 36297 735 15 , , , 36297 735 16 but but CC 36297 735 17 rather rather RB 36297 735 18 the the DT 36297 735 19 figures figure NNS 36297 735 20 which which WDT 36297 735 21 we -PRON- PRP 36297 735 22 see see VBP 36297 735 23 . . . 36297 736 1 [ [ -LRB- 36297 736 2 Illustration illustration NN 36297 736 3 : : : 36297 736 4 Fig Fig NNP 36297 736 5 . . . 36297 737 1 9.--Three 9.--three CD 36297 737 2 squares square NNS 36297 737 3 of of IN 36297 737 4 equal equal JJ 36297 737 5 dimensions dimension NNS 36297 737 6 which which WDT 36297 737 7 appear appear VBP 36297 737 8 different different JJ 36297 737 9 in in IN 36297 737 10 area area NN 36297 737 11 and and CC 36297 737 12 dimension dimension NN 36297 737 13 . . . 36297 737 14 ] ] -RRB- 36297 738 1 In in IN 36297 738 2 Fig Fig NNP 36297 738 3 . . . 36297 739 1 9 9 CD 36297 739 2 the the DT 36297 739 3 three three CD 36297 739 4 squares square NNS 36297 739 5 are be VBP 36297 739 6 equal equal JJ 36297 739 7 in in IN 36297 739 8 dimensions dimension NNS 36297 739 9 but but CC 36297 739 10 the the DT 36297 739 11 different different JJ 36297 739 12 characters character NNS 36297 739 13 of of IN 36297 739 14 the the DT 36297 739 15 divisions division NNS 36297 739 16 cause cause VB 36297 739 17 them -PRON- PRP 36297 739 18 to to TO 36297 739 19 appear appear VB 36297 739 20 not not RB 36297 739 21 only only RB 36297 739 22 unequal unequal JJ 36297 739 23 , , , 36297 739 24 but but CC 36297 739 25 no no DT 36297 739 26 longer long RBR 36297 739 27 squares square NNS 36297 739 28 . . . 36297 740 1 In in IN 36297 740 2 Fig Fig NNP 36297 740 3 . . . 36297 741 1 10 10 CD 36297 741 2 the the DT 36297 741 3 distance distance NN 36297 741 4 between between IN 36297 741 5 the the DT 36297 741 6 outside outside JJ 36297 741 7 edges edge NNS 36297 741 8 of of IN 36297 741 9 the the DT 36297 741 10 three three CD 36297 741 11 circles circle NNS 36297 741 12 arranged arrange VBD 36297 741 13 horizontally horizontally RB 36297 741 14 appears appear VBZ 36297 741 15 greater great JJR 36297 741 16 than than IN 36297 741 17 the the DT 36297 741 18 empty empty JJ 36297 741 19 space space NN 36297 741 20 between between IN 36297 741 21 the the DT 36297 741 22 upper upper JJ 36297 741 23 circle circle NN 36297 741 24 and and CC 36297 741 25 the the DT 36297 741 26 left left JJ 36297 741 27 - - HYPH 36297 741 28 hand hand NN 36297 741 29 circle circle NN 36297 741 30 of of IN 36297 741 31 the the DT 36297 741 32 group group NN 36297 741 33 . . . 36297 742 1 [ [ -LRB- 36297 742 2 Illustration illustration NN 36297 742 3 : : : 36297 742 4 Fig Fig NNP 36297 742 5 . . . 36297 743 1 10.--The 10.--the CD 36297 743 2 vertical vertical JJ 36297 743 3 distance distance NN 36297 743 4 between between IN 36297 743 5 the the DT 36297 743 6 upper upper JJ 36297 743 7 circle circle NN 36297 743 8 and and CC 36297 743 9 the the DT 36297 743 10 left left JJ 36297 743 11 - - HYPH 36297 743 12 hand hand NN 36297 743 13 one one CD 36297 743 14 of of IN 36297 743 15 the the DT 36297 743 16 group group NN 36297 743 17 is be VBZ 36297 743 18 equal equal JJ 36297 743 19 to to IN 36297 743 20 the the DT 36297 743 21 overall overall JJ 36297 743 22 length length NN 36297 743 23 of of IN 36297 743 24 the the DT 36297 743 25 group group NN 36297 743 26 of of IN 36297 743 27 three three CD 36297 743 28 circles circle NNS 36297 743 29 . . . 36297 743 30 ] ] -RRB- 36297 744 1 _ _ NNP 36297 744 2 Illusions Illusions NNPS 36297 744 3 of of IN 36297 744 4 Contour._--The contour._--the CD 36297 744 5 illusions illusion NNS 36297 744 6 of of IN 36297 744 7 this this DT 36297 744 8 type type NN 36297 744 9 , , , 36297 744 10 or or CC 36297 744 11 exhibiting exhibit VBG 36297 744 12 this this DT 36297 744 13 influence influence NN 36297 744 14 , , , 36297 744 15 are be VBP 36297 744 16 quite quite RB 36297 744 17 numerous numerous JJ 36297 744 18 . . . 36297 745 1 In in IN 36297 745 2 Fig Fig NNP 36297 745 3 . . . 36297 746 1 11 11 CD 36297 746 2 there there EX 36297 746 3 are be VBP 36297 746 4 two two CD 36297 746 5 semicircles semicircle NNS 36297 746 6 , , , 36297 746 7 one one CD 36297 746 8 closed close VBN 36297 746 9 by by IN 36297 746 10 a a DT 36297 746 11 diameter diameter NN 36297 746 12 , , , 36297 746 13 the the DT 36297 746 14 other other JJ 36297 746 15 unclosed unclosed JJ 36297 746 16 . . . 36297 747 1 The the DT 36297 747 2 latter latter NN 36297 747 3 appears appear VBZ 36297 747 4 somewhat somewhat RB 36297 747 5 flatter flat JJR 36297 747 6 and and CC 36297 747 7 of of IN 36297 747 8 slightly slightly RB 36297 747 9 greater great JJR 36297 747 10 radius radius NN 36297 747 11 than than IN 36297 747 12 the the DT 36297 747 13 closed closed JJ 36297 747 14 one one CD 36297 747 15 . . . 36297 748 1 Similarly similarly RB 36297 748 2 in in IN 36297 748 3 Fig Fig NNP 36297 748 4 . . . 36297 749 1 12 12 CD 36297 749 2 the the DT 36297 749 3 shorter short JJR 36297 749 4 portion portion NN 36297 749 5 of of IN 36297 749 6 the the DT 36297 749 7 interrupted interrupt VBN 36297 749 8 circumference circumference NN 36297 749 9 of of IN 36297 749 10 a a DT 36297 749 11 circle circle NN 36297 749 12 appears appear VBZ 36297 749 13 flatter flat JJR 36297 749 14 and and CC 36297 749 15 of of IN 36297 749 16 greater great JJR 36297 749 17 radius radius NN 36297 749 18 of of IN 36297 749 19 curvature curvature NN 36297 749 20 than than IN 36297 749 21 the the DT 36297 749 22 greater great JJR 36297 749 23 portions portion NNS 36297 749 24 . . . 36297 750 1 In in IN 36297 750 2 Fig Fig NNP 36297 750 3 . . . 36297 751 1 13 13 CD 36297 751 2 the the DT 36297 751 3 length length NN 36297 751 4 of of IN 36297 751 5 the the DT 36297 751 6 middle middle JJ 36297 751 7 space space NN 36297 751 8 and and CC 36297 751 9 of of IN 36297 751 10 the the DT 36297 751 11 open open JJ 36297 751 12 - - HYPH 36297 751 13 sided sided JJ 36297 751 14 squares square NNS 36297 751 15 are be VBP 36297 751 16 equal equal JJ 36297 751 17 . . . 36297 752 1 In in IN 36297 752 2 fact fact NN 36297 752 3 there there EX 36297 752 4 are be VBP 36297 752 5 two two CD 36297 752 6 uncompleted uncompleted JJ 36297 752 7 squares square NNS 36297 752 8 and and CC 36297 752 9 an an DT 36297 752 10 empty empty JJ 36297 752 11 " " `` 36297 752 12 square square NN 36297 752 13 " " '' 36297 752 14 between between IN 36297 752 15 , , , 36297 752 16 the the DT 36297 752 17 three three CD 36297 752 18 of of IN 36297 752 19 which which WDT 36297 752 20 are be VBP 36297 752 21 of of IN 36297 752 22 equal equal JJ 36297 752 23 dimensions dimension NNS 36297 752 24 . . . 36297 753 1 However however RB 36297 753 2 the the DT 36297 753 3 middle middle JJ 36297 753 4 space space NN 36297 753 5 appears appear VBZ 36297 753 6 slightly slightly RB 36297 753 7 too too RB 36297 753 8 high high JJ 36297 753 9 and and CC 36297 753 10 narrow narrow JJ 36297 753 11 ; ; : 36297 753 12 the the DT 36297 753 13 other other JJ 36297 753 14 two two CD 36297 753 15 appear appear VBP 36297 753 16 slightly slightly RB 36297 753 17 too too RB 36297 753 18 low low JJ 36297 753 19 and and CC 36297 753 20 broad broad JJ 36297 753 21 . . . 36297 754 1 These these DT 36297 754 2 figures figure NNS 36297 754 3 are be VBP 36297 754 4 related relate VBN 36297 754 5 to to IN 36297 754 6 the the DT 36297 754 7 well well RB 36297 754 8 - - HYPH 36297 754 9 known know VBN 36297 754 10 Müller Müller NNP 36297 754 11 - - HYPH 36297 754 12 Lyer Lyer NNP 36297 754 13 illusion illusion NN 36297 754 14 illustrated illustrate VBN 36297 754 15 in in IN 36297 754 16 Fig Fig NNP 36297 754 17 . . . 36297 755 1 56 56 CD 36297 755 2 . . . 36297 756 1 Some some DT 36297 756 2 of of IN 36297 756 3 the the DT 36297 756 4 illusions illusion NNS 36297 756 5 presented present VBN 36297 756 6 later later RB 36297 756 7 will will MD 36297 756 8 be be VB 36297 756 9 seen see VBN 36297 756 10 to to TO 36297 756 11 involve involve VB 36297 756 12 the the DT 36297 756 13 influence influence NN 36297 756 14 of of IN 36297 756 15 contour contour NN 36297 756 16 . . . 36297 757 1 Examples example NNS 36297 757 2 of of IN 36297 757 3 these these DT 36297 757 4 are be VBP 36297 757 5 Figs fig NNS 36297 757 6 . . . 36297 758 1 55 55 CD 36297 758 2 and and CC 36297 758 3 60 60 CD 36297 758 4 . . . 36297 759 1 In in IN 36297 759 2 the the DT 36297 759 3 former former JJ 36297 759 4 , , , 36297 759 5 the the DT 36297 759 6 horizontal horizontal JJ 36297 759 7 base base NN 36297 759 8 line line NN 36297 759 9 appears appear VBZ 36297 759 10 to to TO 36297 759 11 sag sag VB 36297 759 12 ; ; : 36297 759 13 in in IN 36297 759 14 the the DT 36297 759 15 latter latter JJ 36297 759 16 , , , 36297 759 17 the the DT 36297 759 18 areas area NNS 36297 759 19 appear appear VBP 36297 759 20 unequal unequal JJ 36297 759 21 , , , 36297 759 22 but but CC 36297 759 23 they -PRON- PRP 36297 759 24 are be VBP 36297 759 25 equal equal JJ 36297 759 26 . . . 36297 760 1 [ [ -LRB- 36297 760 2 Illustration illustration NN 36297 760 3 : : : 36297 760 4 Fig Fig NNP 36297 760 5 . . . 36297 761 1 11.--Two 11.--two CD 36297 761 2 equal equal JJ 36297 761 3 semicircles semicircle NNS 36297 761 4 . . . 36297 761 5 ] ] -RRB- 36297 762 1 [ [ -LRB- 36297 762 2 Illustration illustration NN 36297 762 3 : : : 36297 762 4 Fig Fig NNP 36297 762 5 . . . 36297 763 1 12.--Arcs 12.--arc NNS 36297 763 2 of of IN 36297 763 3 the the DT 36297 763 4 same same JJ 36297 763 5 circle circle NN 36297 763 6 . . . 36297 763 7 ] ] -RRB- 36297 764 1 [ [ -LRB- 36297 764 2 Illustration illustration NN 36297 764 3 : : : 36297 764 4 Fig Fig NNP 36297 764 5 . . . 36297 765 1 13.--Three 13.--three CD 36297 765 2 incomplete incomplete JJ 36297 765 3 but but CC 36297 765 4 equal equal JJ 36297 765 5 squares square NNS 36297 765 6 . . . 36297 765 7 ] ] -RRB- 36297 766 1 _ _ NNP 36297 766 2 Illusions Illusions NNPS 36297 766 3 of of IN 36297 766 4 Contrast._--Those contrast._--those NN 36297 766 5 illusions illusion NNS 36297 766 6 due due JJ 36297 766 7 to to IN 36297 766 8 brightness brightness NN 36297 766 9 contrast contrast NN 36297 766 10 are be VBP 36297 766 11 not not RB 36297 766 12 included include VBN 36297 766 13 in in IN 36297 766 14 this this DT 36297 766 15 group group NN 36297 766 16 , , , 36297 766 17 for for IN 36297 766 18 " " `` 36297 766 19 contrast contrast NN 36297 766 20 " " '' 36297 766 21 here here RB 36297 766 22 refers refer VBZ 36297 766 23 to to IN 36297 766 24 lines line NNS 36297 766 25 , , , 36297 766 26 angles angle NNS 36297 766 27 and and CC 36297 766 28 areas area NNS 36297 766 29 of of IN 36297 766 30 different different JJ 36297 766 31 sizes size NNS 36297 766 32 . . . 36297 767 1 In in IN 36297 767 2 general general JJ 36297 767 3 , , , 36297 767 4 parts part NNS 36297 767 5 adjacent adjacent JJ 36297 767 6 to to IN 36297 767 7 large large JJ 36297 767 8 extents extent NNS 36297 767 9 appear appear VBP 36297 767 10 smaller small JJR 36297 767 11 and and CC 36297 767 12 those those DT 36297 767 13 adjacent adjacent JJ 36297 767 14 to to IN 36297 767 15 small small JJ 36297 767 16 extents extent NNS 36297 767 17 appear appear VBP 36297 767 18 larger large JJR 36297 767 19 . . . 36297 768 1 A a DT 36297 768 2 simple simple JJ 36297 768 3 case case NN 36297 768 4 is be VBZ 36297 768 5 shown show VBN 36297 768 6 in in IN 36297 768 7 Fig Fig NNP 36297 768 8 . . . 36297 769 1 14 14 CD 36297 769 2 , , , 36297 769 3 where where WRB 36297 769 4 the the DT 36297 769 5 middle middle JJ 36297 769 6 sections section NNS 36297 769 7 of of IN 36297 769 8 the the DT 36297 769 9 two two CD 36297 769 10 lines line NNS 36297 769 11 are be VBP 36297 769 12 equal equal JJ 36297 769 13 , , , 36297 769 14 but but CC 36297 769 15 that that DT 36297 769 16 of of IN 36297 769 17 the the DT 36297 769 18 shorter short JJR 36297 769 19 line line NN 36297 769 20 appears appear VBZ 36297 769 21 longer long JJR 36297 769 22 than than IN 36297 769 23 that that DT 36297 769 24 of of IN 36297 769 25 the the DT 36297 769 26 longer long JJR 36297 769 27 line line NN 36297 769 28 . . . 36297 770 1 In in IN 36297 770 2 Fig Fig NNP 36297 770 3 . . . 36297 771 1 15 15 CD 36297 771 2 the the DT 36297 771 3 two two CD 36297 771 4 parts part NNS 36297 771 5 of of IN 36297 771 6 the the DT 36297 771 7 connecting connect VBG 36297 771 8 line line NN 36297 771 9 are be VBP 36297 771 10 equal equal JJ 36297 771 11 , , , 36297 771 12 but but CC 36297 771 13 they -PRON- PRP 36297 771 14 do do VBP 36297 771 15 not not RB 36297 771 16 appear appear VB 36297 771 17 so so RB 36297 771 18 . . . 36297 772 1 This this DT 36297 772 2 illusion illusion NN 36297 772 3 is be VBZ 36297 772 4 not not RB 36297 772 5 as as RB 36297 772 6 positive positive JJ 36297 772 7 as as IN 36297 772 8 the the DT 36297 772 9 preceding precede VBG 36297 772 10 one one CD 36297 772 11 and and CC 36297 772 12 , , , 36297 772 13 in in IN 36297 772 14 fact fact NN 36297 772 15 , , , 36297 772 16 the the DT 36297 772 17 position position NN 36297 772 18 of of IN 36297 772 19 the the DT 36297 772 20 short short JJ 36297 772 21 vertical vertical JJ 36297 772 22 dividing dividing NN 36297 772 23 line line NN 36297 772 24 may may MD 36297 772 25 appear appear VB 36297 772 26 to to TO 36297 772 27 fluctuate fluctuate VB 36297 772 28 considerably considerably RB 36297 772 29 . . . 36297 773 1 [ [ -LRB- 36297 773 2 Illustration illustration NN 36297 773 3 : : : 36297 773 4 Fig Fig NNP 36297 773 5 . . . 36297 774 1 14.--Middle 14.--middle CD 36297 774 2 sections section NNS 36297 774 3 of of IN 36297 774 4 the the DT 36297 774 5 two two CD 36297 774 6 lines line NNS 36297 774 7 are be VBP 36297 774 8 equal equal JJ 36297 774 9 . . . 36297 774 10 ] ] -RRB- 36297 775 1 [ [ -LRB- 36297 775 2 Illustration illustration NN 36297 775 3 : : : 36297 775 4 Fig Fig NNP 36297 775 5 . . . 36297 776 1 15.--An 15.--an CD 36297 776 2 effect effect NN 36297 776 3 of of IN 36297 776 4 contrasting contrast VBG 36297 776 5 areas area NNS 36297 776 6 ( ( -LRB- 36297 776 7 Baldwin Baldwin NNP 36297 776 8 's 's POS 36297 776 9 figure figure NN 36297 776 10 ) ) -RRB- 36297 776 11 . . . 36297 776 12 ] ] -RRB- 36297 777 1 Fig fig NN 36297 777 2 . . . 36297 778 1 16 16 CD 36297 778 2 might may MD 36297 778 3 be be VB 36297 778 4 considered consider VBN 36297 778 5 to to TO 36297 778 6 be be VB 36297 778 7 an an DT 36297 778 8 illusion illusion NN 36297 778 9 of of IN 36297 778 10 contour contour NN 36297 778 11 , , , 36297 778 12 but but CC 36297 778 13 the the DT 36297 778 14 length length NN 36297 778 15 of of IN 36297 778 16 the the DT 36297 778 17 top top JJ 36297 778 18 horizontal horizontal JJ 36297 778 19 line line NN 36297 778 20 of of IN 36297 778 21 the the DT 36297 778 22 lower low JJR 36297 778 23 figure figure NN 36297 778 24 being be VBG 36297 778 25 apparently apparently RB 36297 778 26 less less JJR 36297 778 27 than than IN 36297 778 28 that that DT 36297 778 29 of of IN 36297 778 30 the the DT 36297 778 31 top top JJ 36297 778 32 line line NN 36297 778 33 of of IN 36297 778 34 the the DT 36297 778 35 upper upper JJ 36297 778 36 figure figure NN 36297 778 37 is be VBZ 36297 778 38 due due JJ 36297 778 39 largely largely RB 36297 778 40 to to IN 36297 778 41 contrasting contrast VBG 36297 778 42 the the DT 36297 778 43 two two CD 36297 778 44 figures figure NNS 36297 778 45 . . . 36297 779 1 Incidentally incidentally RB 36297 779 2 , , , 36297 779 3 it -PRON- PRP 36297 779 4 is be VBZ 36297 779 5 difficult difficult JJ 36297 779 6 to to TO 36297 779 7 believe believe VB 36297 779 8 that that IN 36297 779 9 the the DT 36297 779 10 maximum maximum JJ 36297 779 11 horizontal horizontal JJ 36297 779 12 width width NN 36297 779 13 of of IN 36297 779 14 the the DT 36297 779 15 lower low JJR 36297 779 16 figure figure NN 36297 779 17 is be VBZ 36297 779 18 as as RB 36297 779 19 great great JJ 36297 779 20 as as IN 36297 779 21 the the DT 36297 779 22 maximum maximum JJ 36297 779 23 height height NN 36297 779 24 of of IN 36297 779 25 the the DT 36297 779 26 figure figure NN 36297 779 27 . . . 36297 780 1 At at IN 36297 780 2 this this DT 36297 780 3 point point NN 36297 780 4 it -PRON- PRP 36297 780 5 is be VBZ 36297 780 6 of of IN 36297 780 7 interest interest NN 36297 780 8 to to TO 36297 780 9 refer refer VB 36297 780 10 to to IN 36297 780 11 other other JJ 36297 780 12 contrast contrast NN 36297 780 13 illusions illusion NNS 36297 780 14 such such JJ 36297 780 15 as as IN 36297 780 16 Figs fig NNS 36297 780 17 . . . 36297 781 1 20 20 CD 36297 781 2 , , , 36297 781 3 57 57 CD 36297 781 4 , , , 36297 781 5 and and CC 36297 781 6 59 59 CD 36297 781 7 . . . 36297 782 1 [ [ -LRB- 36297 782 2 Illustration illustration NN 36297 782 3 : : : 36297 782 4 Fig Fig NNP 36297 782 5 . . . 36297 783 1 16.--An 16.--an CD 36297 783 2 illusion illusion NN 36297 783 3 of of IN 36297 783 4 contrast contrast NN 36297 783 5 . . . 36297 783 6 ] ] -RRB- 36297 784 1 A a DT 36297 784 2 striking striking JJ 36297 784 3 illusion illusion NN 36297 784 4 of of IN 36297 784 5 contrast contrast NN 36297 784 6 is be VBZ 36297 784 7 shown show VBN 36297 784 8 in in IN 36297 784 9 Fig Fig NNP 36297 784 10 . . . 36297 785 1 17 17 CD 36297 785 2 , , , 36297 785 3 where where WRB 36297 785 4 the the DT 36297 785 5 central central JJ 36297 785 6 circles circle NNS 36297 785 7 of of IN 36297 785 8 the the DT 36297 785 9 two two CD 36297 785 10 figures figure NNS 36297 785 11 are be VBP 36297 785 12 equal equal JJ 36297 785 13 , , , 36297 785 14 although although IN 36297 785 15 the the DT 36297 785 16 one one NN 36297 785 17 surrounded surround VBN 36297 785 18 by by IN 36297 785 19 the the DT 36297 785 20 large large JJ 36297 785 21 circles circle NNS 36297 785 22 appears appear VBZ 36297 785 23 much much RB 36297 785 24 smaller small JJR 36297 785 25 than than IN 36297 785 26 the the DT 36297 785 27 other other JJ 36297 785 28 . . . 36297 786 1 Similarly similarly RB 36297 786 2 , , , 36297 786 3 in in IN 36297 786 4 Fig Fig NNP 36297 786 5 . . . 36297 787 1 18 18 CD 36297 787 2 the the DT 36297 787 3 inner inner JJ 36297 787 4 circles circle NNS 36297 787 5 of of IN 36297 787 6 _ _ NNP 36297 787 7 b b NNP 36297 787 8 _ _ NNP 36297 787 9 and and CC 36297 787 10 _ _ NNP 36297 787 11 c c NNP 36297 787 12 _ _ NNP 36297 787 13 are be VBP 36297 787 14 equal equal JJ 36297 787 15 but but CC 36297 787 16 that that DT 36297 787 17 of of IN 36297 787 18 _ _ NNP 36297 787 19 b b NNP 36297 787 20 _ _ NNP 36297 787 21 appears appear VBZ 36297 787 22 the the DT 36297 787 23 larger large JJR 36297 787 24 . . . 36297 788 1 The the DT 36297 788 2 inner inner JJ 36297 788 3 circle circle NN 36297 788 4 of of IN 36297 788 5 _ _ NNP 36297 788 6 a a DT 36297 788 7 _ _ NNP 36297 788 8 appears appear VBZ 36297 788 9 larger large JJR 36297 788 10 than than IN 36297 788 11 the the DT 36297 788 12 outer outer JJ 36297 788 13 circle circle NN 36297 788 14 of of IN 36297 788 15 _ _ NNP 36297 788 16 b b NNP 36297 788 17 _ _ NNP 36297 788 18 , , , 36297 788 19 despite despite IN 36297 788 20 their -PRON- PRP$ 36297 788 21 actual actual JJ 36297 788 22 equality equality NN 36297 788 23 . . . 36297 789 1 [ [ -LRB- 36297 789 2 Illustration illustration NN 36297 789 3 : : : 36297 789 4 Fig Fig NNP 36297 789 5 . . . 36297 790 1 17.--Equal 17.--equal CD 36297 790 2 circles circle NNS 36297 790 3 which which WDT 36297 790 4 appear appear VBP 36297 790 5 unequal unequal JJ 36297 790 6 due due IN 36297 790 7 to to IN 36297 790 8 contrast contrast NN 36297 790 9 ( ( -LRB- 36297 790 10 Ebbinghaus ebbinghaus NN 36297 790 11 ' ' POS 36297 790 12 figure figure NN 36297 790 13 ) ) -RRB- 36297 790 14 . . . 36297 790 15 ] ] -RRB- 36297 791 1 [ [ -LRB- 36297 791 2 Illustration illustration NN 36297 791 3 : : : 36297 791 4 Fig Fig NNP 36297 791 5 . . . 36297 792 1 18.--Equal 18.--equal CD 36297 792 2 circles circle NNS 36297 792 3 appearing appear VBG 36297 792 4 unequal unequal JJ 36297 792 5 owing owing NN 36297 792 6 to to IN 36297 792 7 contrasting contrast VBG 36297 792 8 concentric concentric JJ 36297 792 9 circles circle NNS 36297 792 10 . . . 36297 792 11 ] ] -RRB- 36297 793 1 In in IN 36297 793 2 Fig Fig NNP 36297 793 3 . . . 36297 794 1 19 19 CD 36297 794 2 the the DT 36297 794 3 circle circle NN 36297 794 4 nearer nearer IN 36297 794 5 the the DT 36297 794 6 apex apex NN 36297 794 7 of of IN 36297 794 8 the the DT 36297 794 9 angle angle NN 36297 794 10 appears appear VBZ 36297 794 11 larger large JJR 36297 794 12 than than IN 36297 794 13 the the DT 36297 794 14 other other JJ 36297 794 15 . . . 36297 795 1 This this DT 36297 795 2 has have VBZ 36297 795 3 been be VBN 36297 795 4 presented present VBN 36297 795 5 as as IN 36297 795 6 one one CD 36297 795 7 reason reason NN 36297 795 8 why why WRB 36297 795 9 the the DT 36297 795 10 sun sun NN 36297 795 11 and and CC 36297 795 12 moon moon NN 36297 795 13 appear appear VBP 36297 795 14 larger large JJR 36297 795 15 at at IN 36297 795 16 the the DT 36297 795 17 horizon horizon NN 36297 795 18 than than IN 36297 795 19 when when WRB 36297 795 20 at at IN 36297 795 21 higher high JJR 36297 795 22 altitudes altitude NNS 36297 795 23 . . . 36297 796 1 This this DT 36297 796 2 explanation explanation NN 36297 796 3 must must MD 36297 796 4 be be VB 36297 796 5 based base VBN 36297 796 6 upon upon IN 36297 796 7 the the DT 36297 796 8 assumption assumption NN 36297 796 9 that that IN 36297 796 10 we -PRON- PRP 36297 796 11 interpret interpret VBP 36297 796 12 the the DT 36297 796 13 " " `` 36297 796 14 vault vault NN 36297 796 15 " " '' 36297 796 16 of of IN 36297 796 17 the the DT 36297 796 18 sky sky NN 36297 796 19 to to TO 36297 796 20 meet meet VB 36297 796 21 at at IN 36297 796 22 the the DT 36297 796 23 horizon horizon NN 36297 796 24 in in IN 36297 796 25 a a DT 36297 796 26 manner manner NN 36297 796 27 somewhat somewhat RB 36297 796 28 similar similar JJ 36297 796 29 to to IN 36297 796 30 the the DT 36297 796 31 angle angle NN 36297 796 32 but but CC 36297 796 33 it -PRON- PRP 36297 796 34 is be VBZ 36297 796 35 difficult difficult JJ 36297 796 36 to to TO 36297 796 37 imagine imagine VB 36297 796 38 such such PDT 36297 796 39 an an DT 36297 796 40 angle angle NN 36297 796 41 made make VBN 36297 796 42 by by IN 36297 796 43 the the DT 36297 796 44 vault vault NN 36297 796 45 of of IN 36297 796 46 the the DT 36297 796 47 sky sky NN 36297 796 48 and and CC 36297 796 49 the the DT 36297 796 50 earth earth NN 36297 796 51 's 's POS 36297 796 52 horizon horizon NN 36297 796 53 . . . 36297 797 1 If if IN 36297 797 2 there there EX 36297 797 3 were be VBD 36297 797 4 one one CD 36297 797 5 in in IN 36297 797 6 reality reality NN 36297 797 7 , , , 36297 797 8 it -PRON- PRP 36297 797 9 would would MD 36297 797 10 not not RB 36297 797 11 be be VB 36297 797 12 seen see VBN 36297 797 13 in in IN 36297 797 14 profile profile NN 36297 797 15 . . . 36297 798 1 [ [ -LRB- 36297 798 2 Illustration illustration NN 36297 798 3 : : : 36297 798 4 Fig Fig NNP 36297 798 5 . . . 36297 799 1 19.--Circles 19.--circles CD 36297 799 2 influenced influence VBN 36297 799 3 by by IN 36297 799 4 position position NN 36297 799 5 within within IN 36297 799 6 an an DT 36297 799 7 angle angle NN 36297 799 8 . . . 36297 799 9 ] ] -RRB- 36297 800 1 [ [ -LRB- 36297 800 2 Illustration illustration NN 36297 800 3 : : : 36297 800 4 Fig Fig NNP 36297 800 5 . . . 36297 801 1 20.--Contrasting 20.--contrasting CD 36297 801 2 angles angle NNS 36297 801 3 . . . 36297 801 4 ] ] -RRB- 36297 802 1 If if IN 36297 802 2 two two CD 36297 802 3 angles angle NNS 36297 802 4 of of IN 36297 802 5 equal equal JJ 36297 802 6 size size NN 36297 802 7 are be VBP 36297 802 8 bounded bound VBN 36297 802 9 by by IN 36297 802 10 small small JJ 36297 802 11 and and CC 36297 802 12 large large JJ 36297 802 13 angles angle NNS 36297 802 14 respectively respectively RB 36297 802 15 , , , 36297 802 16 the the DT 36297 802 17 apex apex NN 36297 802 18 in in IN 36297 802 19 each each DT 36297 802 20 case case NN 36297 802 21 being be VBG 36297 802 22 common common JJ 36297 802 23 to to IN 36297 802 24 the the DT 36297 802 25 inner inner JJ 36297 802 26 and and CC 36297 802 27 two two CD 36297 802 28 bounding bound VBG 36297 802 29 angles angle NNS 36297 802 30 , , , 36297 802 31 the the DT 36297 802 32 effect effect NN 36297 802 33 of of IN 36297 802 34 contrast contrast NN 36297 802 35 is be VBZ 36297 802 36 very very RB 36297 802 37 apparent apparent JJ 36297 802 38 , , , 36297 802 39 as as IN 36297 802 40 seen see VBN 36297 802 41 in in IN 36297 802 42 Fig Fig NNP 36297 802 43 . . . 36297 803 1 20 20 CD 36297 803 2 . . . 36297 804 1 In in IN 36297 804 2 Fig Fig NNP 36297 804 3 . . . 36297 805 1 57 57 CD 36297 805 2 are be VBP 36297 805 3 found find VBN 36297 805 4 examples example NNS 36297 805 5 of of IN 36297 805 6 effects effect NNS 36297 805 7 of of IN 36297 805 8 lines line NNS 36297 805 9 contrasted contrast VBN 36297 805 10 as as IN 36297 805 11 to to IN 36297 805 12 length length NN 36297 805 13 . . . 36297 806 1 [ [ -LRB- 36297 806 2 Illustration illustration NN 36297 806 3 : : : 36297 806 4 Fig Fig NNP 36297 806 5 . . . 36297 807 1 21.--Owing 21.--owing CD 36297 807 2 to to TO 36297 807 3 perspective perspective VB 36297 807 4 the the DT 36297 807 5 right right JJ 36297 807 6 angles angle NNS 36297 807 7 appear appear VBP 36297 807 8 oblique oblique JJ 36297 807 9 and and CC 36297 807 10 vice vice NN 36297 807 11 versa versa RB 36297 807 12 . . . 36297 807 13 ] ] -RRB- 36297 808 1 The the DT 36297 808 2 reader reader NN 36297 808 3 may may MD 36297 808 4 readily readily RB 36297 808 5 construct construct VB 36297 808 6 an an DT 36297 808 7 extensive extensive JJ 36297 808 8 variety variety NN 36297 808 9 of of IN 36297 808 10 illusions illusion NNS 36297 808 11 of of IN 36297 808 12 contrast contrast NN 36297 808 13 ; ; : 36297 808 14 in in IN 36297 808 15 fact fact NN 36297 808 16 , , , 36297 808 17 contrast contrast NN 36297 808 18 plays play VBZ 36297 808 19 a a DT 36297 808 20 part part NN 36297 808 21 in in IN 36297 808 22 most most JJS 36297 808 23 geometrical geometrical JJ 36297 808 24 - - HYPH 36297 808 25 optical optical JJ 36297 808 26 illusions illusion NNS 36297 808 27 . . . 36297 809 1 The the DT 36297 809 2 contrasts contrast NNS 36297 809 3 may may MD 36297 809 4 be be VB 36297 809 5 between between IN 36297 809 6 existing exist VBG 36297 809 7 lines line NNS 36297 809 8 , , , 36297 809 9 areas area NNS 36297 809 10 , , , 36297 809 11 etc etc FW 36297 809 12 . . FW 36297 809 13 , , , 36297 809 14 or or CC 36297 809 15 the the DT 36297 809 16 imagination imagination NN 36297 809 17 may may MD 36297 809 18 supply supply VB 36297 809 19 some some DT 36297 809 20 of of IN 36297 809 21 them -PRON- PRP 36297 809 22 . . . 36297 810 1 [ [ -LRB- 36297 810 2 Illustration illustration NN 36297 810 3 : : : 36297 810 4 Fig Fig NNP 36297 810 5 . . . 36297 811 1 22.--Two 22.--two CD 36297 811 2 equal equal JJ 36297 811 3 diagonals diagonal NNS 36297 811 4 which which WDT 36297 811 5 appear appear VBP 36297 811 6 unequal unequal JJ 36297 811 7 . . . 36297 811 8 ] ] -RRB- 36297 812 1 _ _ NNP 36297 812 2 Illusions Illusions NNPS 36297 812 3 of of IN 36297 812 4 Perspective._--As perspective._--as NN 36297 812 5 the the DT 36297 812 6 complexity complexity NN 36297 812 7 of of IN 36297 812 8 figures figure NNS 36297 812 9 is be VBZ 36297 812 10 increased increase VBN 36297 812 11 the the DT 36297 812 12 number number NN 36297 812 13 of of IN 36297 812 14 possible possible JJ 36297 812 15 illusions illusion NNS 36297 812 16 is be VBZ 36297 812 17 multiplied multiply VBN 36297 812 18 . . . 36297 813 1 In in IN 36297 813 2 perspective perspective NN 36297 813 3 we -PRON- PRP 36297 813 4 have have VBP 36297 813 5 the the DT 36297 813 6 influences influence NNS 36297 813 7 of of IN 36297 813 8 various various JJ 36297 813 9 factors factor NNS 36297 813 10 such such JJ 36297 813 11 as as IN 36297 813 12 lines line NNS 36297 813 13 , , , 36297 813 14 angles angle NNS 36297 813 15 , , , 36297 813 16 and and CC 36297 813 17 sometimes sometimes RB 36297 813 18 contour contour NN 36297 813 19 and and CC 36297 813 20 contrast contrast NN 36297 813 21 . . . 36297 814 1 In in IN 36297 814 2 Fig Fig NNP 36297 814 3 . . . 36297 815 1 21 21 CD 36297 815 2 the the DT 36297 815 3 suggestion suggestion NN 36297 815 4 due due IN 36297 815 5 to to IN 36297 815 6 the the DT 36297 815 7 perspective perspective NN 36297 815 8 of of IN 36297 815 9 the the DT 36297 815 10 cube cube NN 36297 815 11 causes cause VBZ 36297 815 12 right right JJ 36297 815 13 angles angle NNS 36297 815 14 to to TO 36297 815 15 appear appear VB 36297 815 16 oblique oblique JJ 36297 815 17 and and CC 36297 815 18 oblique oblique JJ 36297 815 19 angles angle NNS 36297 815 20 to to TO 36297 815 21 appear appear VB 36297 815 22 to to TO 36297 815 23 be be VB 36297 815 24 right right JJ 36297 815 25 angles angle NNS 36297 815 26 . . . 36297 816 1 This this DT 36297 816 2 figure figure NN 36297 816 3 is be VBZ 36297 816 4 particularly particularly RB 36297 816 5 illusive illusive JJ 36297 816 6 . . . 36297 817 1 It -PRON- PRP 36297 817 2 is be VBZ 36297 817 3 interesting interesting JJ 36297 817 4 to to TO 36297 817 5 note note VB 36297 817 6 that that IN 36297 817 7 even even RB 36297 817 8 an an DT 36297 817 9 after after IN 36297 817 10 - - HYPH 36297 817 11 image image NN 36297 817 12 of of IN 36297 817 13 a a DT 36297 817 14 right right JJ 36297 817 15 - - HYPH 36297 817 16 angle angle NN 36297 817 17 cross cross NN 36297 817 18 when when WRB 36297 817 19 projected project VBN 36297 817 20 upon upon IN 36297 817 21 a a DT 36297 817 22 wall wall NN 36297 817 23 drawn draw VBN 36297 817 24 in in IN 36297 817 25 perspective perspective NN 36297 817 26 in in IN 36297 817 27 a a DT 36297 817 28 painting painting NN 36297 817 29 will will MD 36297 817 30 appear appear VB 36297 817 31 oblique oblique JJ 36297 817 32 . . . 36297 818 1 [ [ -LRB- 36297 818 2 Illustration illustration NN 36297 818 3 : : : 36297 818 4 Fig Fig NNP 36297 818 5 . . . 36297 819 1 23.--Apparent 23.--apparent CD 36297 819 2 variations variation NNS 36297 819 3 in in IN 36297 819 4 the the DT 36297 819 5 distance distance NN 36297 819 6 between between IN 36297 819 7 two two CD 36297 819 8 parallel parallel JJ 36297 819 9 lines line NNS 36297 819 10 . . . 36297 819 11 ] ] -RRB- 36297 820 1 A a DT 36297 820 2 striking striking JJ 36297 820 3 illusion illusion NN 36297 820 4 involving involve VBG 36297 820 5 perspective perspective NN 36297 820 6 , , , 36297 820 7 or or CC 36297 820 8 at at IN 36297 820 9 least least JJS 36297 820 10 the the DT 36297 820 11 influence influence NN 36297 820 12 of of IN 36297 820 13 angles angle NNS 36297 820 14 , , , 36297 820 15 is be VBZ 36297 820 16 shown show VBN 36297 820 17 in in IN 36297 820 18 Fig Fig NNP 36297 820 19 . . . 36297 821 1 22 22 CD 36297 821 2 . . . 36297 822 1 Here here RB 36297 822 2 the the DT 36297 822 3 diagonals diagonal NNS 36297 822 4 of of IN 36297 822 5 the the DT 36297 822 6 two two CD 36297 822 7 parallelograms parallelogram NNS 36297 822 8 are be VBP 36297 822 9 of of IN 36297 822 10 equal equal JJ 36297 822 11 length length NN 36297 822 12 but but CC 36297 822 13 the the DT 36297 822 14 one one NN 36297 822 15 on on IN 36297 822 16 the the DT 36297 822 17 right right NN 36297 822 18 appears appear VBZ 36297 822 19 much much RB 36297 822 20 smaller small JJR 36297 822 21 . . . 36297 823 1 That that IN 36297 823 2 _ _ NNP 36297 823 3 AX AX NNP 36297 823 4 _ _ NNP 36297 823 5 is be VBZ 36297 823 6 equal equal JJ 36297 823 7 in in IN 36297 823 8 length length NN 36297 823 9 to to IN 36297 823 10 _ _ NNP 36297 823 11 AY AY NNP 36297 823 12 _ _ NNP 36297 823 13 is be VBZ 36297 823 14 readily readily RB 36297 823 15 demonstrated demonstrate VBN 36297 823 16 by by IN 36297 823 17 describing describe VBG 36297 823 18 a a DT 36297 823 19 circle circle NN 36297 823 20 from from IN 36297 823 21 the the DT 36297 823 22 center center NN 36297 823 23 _ _ NNP 36297 823 24 A A NNP 36297 823 25 _ _ NNP 36297 823 26 and and CC 36297 823 27 with with IN 36297 823 28 a a DT 36297 823 29 radius radius NN 36297 823 30 equal equal JJ 36297 823 31 to to IN 36297 823 32 _ _ NNP 36297 823 33 AX AX NNP 36297 823 34 _ _ NNP 36297 823 35 . . . 36297 824 1 It -PRON- PRP 36297 824 2 will will MD 36297 824 3 be be VB 36297 824 4 found find VBN 36297 824 5 to to TO 36297 824 6 pass pass VB 36297 824 7 through through IN 36297 824 8 the the DT 36297 824 9 point point NN 36297 824 10 _ _ NNP 36297 824 11 Y Y NNP 36297 824 12 _ _ NNP 36297 824 13 . . . 36297 825 1 Obviously obviously RB 36297 825 2 , , , 36297 825 3 geometry geometry NN 36297 825 4 abounds abound VBZ 36297 825 5 in in IN 36297 825 6 geometrical geometrical JJ 36297 825 7 - - HYPH 36297 825 8 optical optical JJ 36297 825 9 illusions illusion NNS 36297 825 10 . . . 36297 826 1 [ [ -LRB- 36297 826 2 Illustration illustration NN 36297 826 3 : : : 36297 826 4 Fig Fig NNP 36297 826 5 . . . 36297 827 1 24.--A 24.--a LS 36297 827 2 striking striking JJ 36297 827 3 illusion illusion NN 36297 827 4 of of IN 36297 827 5 perspective perspective NN 36297 827 6 . . . 36297 827 7 ] ] -RRB- 36297 828 1 The the DT 36297 828 2 effect effect NN 36297 828 3 of of IN 36297 828 4 contrast contrast NN 36297 828 5 is be VBZ 36297 828 6 seen see VBN 36297 828 7 in in IN 36297 828 8 _ _ NNP 36297 828 9 a a DT 36297 828 10 _ _ NNP 36297 828 11 in in IN 36297 828 12 Fig Fig NNP 36297 828 13 . . . 36297 829 1 23 23 CD 36297 829 2 ; ; : 36297 829 3 that that RB 36297 829 4 is is RB 36297 829 5 , , , 36297 829 6 the the DT 36297 829 7 short short JJ 36297 829 8 parallel parallel JJ 36297 829 9 lines line NNS 36297 829 10 appear appear VBP 36297 829 11 further far RBR 36297 829 12 apart apart RB 36297 829 13 than than IN 36297 829 14 the the DT 36297 829 15 pair pair NN 36297 829 16 of of IN 36297 829 17 long long JJ 36297 829 18 ones one NNS 36297 829 19 . . . 36297 830 1 By by IN 36297 830 2 adding add VBG 36297 830 3 the the DT 36297 830 4 oblique oblique JJ 36297 830 5 lines line NNS 36297 830 6 at at IN 36297 830 7 the the DT 36297 830 8 ends end NNS 36297 830 9 of of IN 36297 830 10 the the DT 36297 830 11 lower low JJR 36297 830 12 pair pair NN 36297 830 13 in in IN 36297 830 14 _ _ NNP 36297 830 15 b b NNP 36297 830 16 _ _ NNP 36297 830 17 , , , 36297 830 18 these these DT 36297 830 19 parallel parallel JJ 36297 830 20 lines line NNS 36297 830 21 now now RB 36297 830 22 appear appear VBP 36297 830 23 further far RBR 36297 830 24 apart apart RB 36297 830 25 than than IN 36297 830 26 the the DT 36297 830 27 horizontal horizontal JJ 36297 830 28 parallel parallel JJ 36297 830 29 lines line NNS 36297 830 30 of of IN 36297 830 31 the the DT 36297 830 32 small small JJ 36297 830 33 rectangle rectangle NN 36297 830 34 . . . 36297 831 1 The the DT 36297 831 2 influence influence NN 36297 831 3 of of IN 36297 831 4 perspective perspective NN 36297 831 5 is be VBZ 36297 831 6 particularly particularly RB 36297 831 7 apparent apparent JJ 36297 831 8 in in IN 36297 831 9 Fig Fig NNP 36297 831 10 . . . 36297 832 1 24 24 CD 36297 832 2 , , , 36297 832 3 where where WRB 36297 832 4 natural natural JJ 36297 832 5 perspective perspective NN 36297 832 6 lines line NNS 36297 832 7 are be VBP 36297 832 8 drawn draw VBN 36297 832 9 to to TO 36297 832 10 suggest suggest VB 36297 832 11 a a DT 36297 832 12 scene scene NN 36297 832 13 . . . 36297 833 1 The the DT 36297 833 2 square square JJ 36297 833 3 columns column NNS 36297 833 4 are be VBP 36297 833 5 of of IN 36297 833 6 the the DT 36297 833 7 same same JJ 36297 833 8 size size NN 36297 833 9 but but CC 36297 833 10 the the DT 36297 833 11 further further JJ 36297 833 12 one one CD 36297 833 13 , , , 36297 833 14 for for IN 36297 833 15 example example NN 36297 833 16 , , , 36297 833 17 being be VBG 36297 833 18 apparently apparently RB 36297 833 19 the the DT 36297 833 20 most most RBS 36297 833 21 distant distant JJ 36297 833 22 and and CC 36297 833 23 of of IN 36297 833 24 the the DT 36297 833 25 same same JJ 36297 833 26 physical physical JJ 36297 833 27 dimensions dimension NNS 36297 833 28 , , , 36297 833 29 actually actually RB 36297 833 30 appears appear VBZ 36297 833 31 much much RB 36297 833 32 larger large JJR 36297 833 33 . . . 36297 834 1 Here here RB 36297 834 2 is be VBZ 36297 834 3 a a DT 36297 834 4 case case NN 36297 834 5 where where WRB 36297 834 6 experience experience NN 36297 834 7 , , , 36297 834 8 allowing allow VBG 36297 834 9 for for IN 36297 834 10 a a DT 36297 834 11 diminution diminution NN 36297 834 12 of of IN 36297 834 13 size size NN 36297 834 14 with with IN 36297 834 15 increasing increase VBG 36297 834 16 distance distance NN 36297 834 17 , , , 36297 834 18 actually actually RB 36297 834 19 causes cause VBZ 36297 834 20 the the DT 36297 834 21 column column NN 36297 834 22 on on IN 36297 834 23 the the DT 36297 834 24 right right NN 36297 834 25 to to TO 36297 834 26 appear appear VB 36297 834 27 larger large JJR 36297 834 28 than than IN 36297 834 29 it -PRON- PRP 36297 834 30 really really RB 36297 834 31 is be VBZ 36297 834 32 . . . 36297 835 1 The the DT 36297 835 2 artist artist NN 36297 835 3 will will MD 36297 835 4 find find VB 36297 835 5 this this DT 36297 835 6 illusion illusion NN 36297 835 7 even even RB 36297 835 8 more more RBR 36297 835 9 striking striking JJ 36297 835 10 if if IN 36297 835 11 he -PRON- PRP 36297 835 12 draws draw VBZ 36297 835 13 three three CD 36297 835 14 human human JJ 36297 835 15 figures figure NNS 36297 835 16 of of IN 36297 835 17 the the DT 36297 835 18 same same JJ 36297 835 19 size size NN 36297 835 20 but but CC 36297 835 21 similarly similarly RB 36297 835 22 disposed dispose VBN 36297 835 23 in in IN 36297 835 24 respect respect NN 36297 835 25 to to IN 36297 835 26 perspective perspective JJ 36297 835 27 lines line NNS 36297 835 28 . . . 36297 836 1 Apparently apparently RB 36297 836 2 converging converge VBG 36297 836 3 lines line NNS 36297 836 4 influence influence VBP 36297 836 5 these these DT 36297 836 6 equal equal JJ 36297 836 7 figures figure NNS 36297 836 8 in in IN 36297 836 9 proportion proportion NN 36297 836 10 as as IN 36297 836 11 they -PRON- PRP 36297 836 12 suggest suggest VBP 36297 836 13 perspective perspective NN 36297 836 14 . . . 36297 837 1 [ [ -LRB- 36297 837 2 Illustration illustration NN 36297 837 3 : : : 36297 837 4 Fig Fig NNP 36297 837 5 . . . 36297 838 1 25.--Distortion 25.--distortion CD 36297 838 2 of of IN 36297 838 3 a a DT 36297 838 4 square square NN 36297 838 5 due due JJ 36297 838 6 to to IN 36297 838 7 superposed superpose VBN 36297 838 8 lines line NNS 36297 838 9 . . . 36297 838 10 ] ] -RRB- 36297 839 1 Although although IN 36297 839 2 they -PRON- PRP 36297 839 3 are be VBP 36297 839 4 not not RB 36297 839 5 necessarily necessarily RB 36297 839 6 illusions illusion NNS 36297 839 7 of of IN 36297 839 8 perspective perspective NN 36297 839 9 , , , 36297 839 10 Figs fig NNS 36297 839 11 . . . 36297 840 1 25 25 CD 36297 840 2 and and CC 36297 840 3 26 26 CD 36297 840 4 are be VBP 36297 840 5 presented present VBN 36297 840 6 here here RB 36297 840 7 because because IN 36297 840 8 they -PRON- PRP 36297 840 9 involve involve VBP 36297 840 10 similar similar JJ 36297 840 11 influences influence NNS 36297 840 12 . . . 36297 841 1 In in IN 36297 841 2 Fig Fig NNP 36297 841 3 . . . 36297 842 1 25 25 CD 36297 842 2 the the DT 36297 842 3 hollow hollow NNP 36297 842 4 square square NN 36297 842 5 is be VBZ 36297 842 6 superposed superpose VBN 36297 842 7 upon upon IN 36297 842 8 groups group NNS 36297 842 9 of of IN 36297 842 10 oblique oblique JJ 36297 842 11 lines line NNS 36297 842 12 so so RB 36297 842 13 arranged arrange VBD 36297 842 14 as as IN 36297 842 15 to to TO 36297 842 16 apparently apparently RB 36297 842 17 distort distort VB 36297 842 18 the the DT 36297 842 19 square square NN 36297 842 20 . . . 36297 843 1 In in IN 36297 843 2 Fig Fig NNP 36297 843 3 . . . 36297 844 1 26 26 CD 36297 844 2 distortions distortion NNS 36297 844 3 of of IN 36297 844 4 the the DT 36297 844 5 circumference circumference NN 36297 844 6 of of IN 36297 844 7 a a DT 36297 844 8 circle circle NN 36297 844 9 are be VBP 36297 844 10 obtained obtain VBN 36297 844 11 in in IN 36297 844 12 a a DT 36297 844 13 similar similar JJ 36297 844 14 manner manner NN 36297 844 15 . . . 36297 845 1 [ [ -LRB- 36297 845 2 Illustration illustration NN 36297 845 3 : : : 36297 845 4 Fig Fig NNP 36297 845 5 . . . 36297 846 1 26.--Distortion 26.--distortion CD 36297 846 2 of of IN 36297 846 3 a a DT 36297 846 4 circle circle NN 36297 846 5 due due JJ 36297 846 6 to to IN 36297 846 7 superposed superpose VBN 36297 846 8 lines line NNS 36297 846 9 . . . 36297 846 10 ] ] -RRB- 36297 847 1 It -PRON- PRP 36297 847 2 is be VBZ 36297 847 3 interesting interesting JJ 36297 847 4 to to TO 36297 847 5 note note VB 36297 847 6 that that IN 36297 847 7 we -PRON- PRP 36297 847 8 are be VBP 36297 847 9 not not RB 36297 847 10 particularly particularly RB 36297 847 11 conscious conscious JJ 36297 847 12 of of IN 36297 847 13 perspective perspective NN 36297 847 14 , , , 36297 847 15 but but CC 36297 847 16 it -PRON- PRP 36297 847 17 is be VBZ 36297 847 18 seen see VBN 36297 847 19 that that IN 36297 847 20 it -PRON- PRP 36297 847 21 has have VBZ 36297 847 22 been be VBN 36297 847 23 a a DT 36297 847 24 factor factor NN 36297 847 25 in in IN 36297 847 26 the the DT 36297 847 27 development development NN 36297 847 28 of of IN 36297 847 29 our -PRON- PRP$ 36297 847 30 visual visual JJ 36297 847 31 perception perception NN 36297 847 32 . . . 36297 848 1 In in IN 36297 848 2 proof proof NN 36297 848 3 of of IN 36297 848 4 this this DT 36297 848 5 we -PRON- PRP 36297 848 6 might may MD 36297 848 7 recall recall VB 36297 848 8 the the DT 36297 848 9 first first JJ 36297 848 10 time time NN 36297 848 11 as as IN 36297 848 12 children child NNS 36297 848 13 we -PRON- PRP 36297 848 14 were be VBD 36297 848 15 asked ask VBN 36297 848 16 to to TO 36297 848 17 draw draw VB 36297 848 18 a a DT 36297 848 19 railroad railroad NN 36297 848 20 track track NN 36297 848 21 trailing trail VBG 36297 848 22 off off RP 36297 848 23 in in IN 36297 848 24 the the DT 36297 848 25 distance distance NN 36297 848 26 . . . 36297 849 1 Doubtless doubtless RB 36297 849 2 , , , 36297 849 3 most most JJS 36297 849 4 of of IN 36297 849 5 us -PRON- PRP 36297 849 6 drew draw VBD 36297 849 7 two two CD 36297 849 8 parallel parallel JJ 36297 849 9 lines line NNS 36297 849 10 instead instead RB 36297 849 11 of of IN 36297 849 12 converging converge VBG 36297 849 13 ones one NNS 36297 849 14 . . . 36297 850 1 A a DT 36297 850 2 person person NN 36297 850 3 approaching approach VBG 36297 850 4 us -PRON- PRP 36297 850 5 is be VBZ 36297 850 6 not not RB 36297 850 7 sensibly sensibly RB 36297 850 8 perceived perceive VBN 36297 850 9 to to TO 36297 850 10 grow grow VB 36297 850 11 . . . 36297 851 1 He -PRON- PRP 36297 851 2 is be VBZ 36297 851 3 more more RBR 36297 851 4 likely likely JJ 36297 851 5 to to TO 36297 851 6 be be VB 36297 851 7 perceived perceive VBN 36297 851 8 all all PDT 36297 851 9 the the DT 36297 851 10 time time NN 36297 851 11 as as IN 36297 851 12 of of IN 36297 851 13 normal normal JJ 36297 851 14 size size NN 36297 851 15 . . . 36297 852 1 The the DT 36297 852 2 finger finger NN 36297 852 3 held hold VBN 36297 852 4 at at IN 36297 852 5 some some DT 36297 852 6 distance distance NN 36297 852 7 may may MD 36297 852 8 more more RBR 36297 852 9 than than IN 36297 852 10 cover cover VB 36297 852 11 the the DT 36297 852 12 object object NN 36297 852 13 such such JJ 36297 852 14 as as IN 36297 852 15 a a DT 36297 852 16 distant distant JJ 36297 852 17 person person NN 36297 852 18 , , , 36297 852 19 but but CC 36297 852 20 the the DT 36297 852 21 finger finger NN 36297 852 22 is be VBZ 36297 852 23 not not RB 36297 852 24 ordinarily ordinarily RB 36297 852 25 perceived perceive VBN 36297 852 26 as as RB 36297 852 27 larger large JJR 36297 852 28 than than IN 36297 852 29 the the DT 36297 852 30 person person NN 36297 852 31 . . . 36297 853 1 Of of RB 36297 853 2 course course RB 36297 853 3 , , , 36297 853 4 when when WRB 36297 853 5 we -PRON- PRP 36297 853 6 think think VBP 36297 853 7 of of IN 36297 853 8 it -PRON- PRP 36297 853 9 we -PRON- PRP 36297 853 10 are be VBP 36297 853 11 conscious conscious JJ 36297 853 12 of of IN 36297 853 13 perspective perspective NN 36297 853 14 and and CC 36297 853 15 of of IN 36297 853 16 the the DT 36297 853 17 increase increase NN 36297 853 18 in in IN 36297 853 19 size size NN 36297 853 20 of of IN 36297 853 21 an an DT 36297 853 22 approaching approach VBG 36297 853 23 object object NN 36297 853 24 . . . 36297 854 1 When when WRB 36297 854 2 a a DT 36297 854 3 locomotive locomotive JJ 36297 854 4 or or CC 36297 854 5 automobile automobile NN 36297 854 6 approaches approach NNS 36297 854 7 very very RB 36297 854 8 rapidly rapidly RB 36297 854 9 , , , 36297 854 10 this this DT 36297 854 11 " " `` 36297 854 12 growth growth NN 36297 854 13 " " '' 36297 854 14 is be VBZ 36297 854 15 likely likely JJ 36297 854 16 to to TO 36297 854 17 be be VB 36297 854 18 so so RB 36297 854 19 striking striking JJ 36297 854 20 as as IN 36297 854 21 to to TO 36297 854 22 be be VB 36297 854 23 generally generally RB 36297 854 24 noticeable noticeable JJ 36297 854 25 . . . 36297 855 1 The the DT 36297 855 2 reader reader NN 36297 855 3 may may MD 36297 855 4 find find VB 36297 855 5 it -PRON- PRP 36297 855 6 of of IN 36297 855 7 interest interest NN 36297 855 8 at at IN 36297 855 9 this this DT 36297 855 10 point point NN 36297 855 11 to to TO 36297 855 12 turn turn VB 36297 855 13 to to IN 36297 855 14 illustrations illustration NNS 36297 855 15 in in IN 36297 855 16 other other JJ 36297 855 17 chapters chapter NNS 36297 855 18 . . . 36297 856 1 The the DT 36297 856 2 foregoing foregoing NN 36297 856 3 are be VBP 36297 856 4 a a DT 36297 856 5 few few JJ 36297 856 6 geometrical geometrical JJ 36297 856 7 illusions illusion NNS 36297 856 8 of of IN 36297 856 9 representative representative JJ 36297 856 10 types type NNS 36297 856 11 . . . 36297 857 1 These these DT 36297 857 2 are be VBP 36297 857 3 not not RB 36297 857 4 all all PDT 36297 857 5 the the DT 36297 857 6 types type NNS 36297 857 7 of of IN 36297 857 8 illusions illusion NNS 36297 857 9 by by IN 36297 857 10 any any DT 36297 857 11 means mean NNS 36297 857 12 and and CC 36297 857 13 they -PRON- PRP 36297 857 14 are be VBP 36297 857 15 only only RB 36297 857 16 a a DT 36297 857 17 few few JJ 36297 857 18 of of IN 36297 857 19 an an DT 36297 857 20 almost almost RB 36297 857 21 numberless numberless JJ 36297 857 22 host host NN 36297 857 23 . . . 36297 858 1 These these DT 36297 858 2 have have VBP 36297 858 3 been be VBN 36297 858 4 presented present VBN 36297 858 5 in in IN 36297 858 6 a a DT 36297 858 7 brief brief JJ 36297 858 8 classification classification NN 36297 858 9 in in IN 36297 858 10 order order NN 36297 858 11 that that IN 36297 858 12 the the DT 36297 858 13 reader reader NN 36297 858 14 might may MD 36297 858 15 not not RB 36297 858 16 be be VB 36297 858 17 overwhelmed overwhelm VBN 36297 858 18 by by IN 36297 858 19 the the DT 36297 858 20 apparent apparent JJ 36297 858 21 chaos chaos NN 36297 858 22 . . . 36297 859 1 Various various JJ 36297 859 2 special special JJ 36297 859 3 and and CC 36297 859 4 miscellaneous miscellaneous JJ 36297 859 5 geometrical geometrical JJ 36297 859 6 illusions illusion NNS 36297 859 7 are be VBP 36297 859 8 presented present VBN 36297 859 9 in in IN 36297 859 10 later later JJ 36297 859 11 chapters chapter NNS 36297 859 12 . . . 36297 860 1 V v NN 36297 860 2 EQUIVOCAL equivocal NN 36297 860 3 FIGURES figure VBD 36297 860 4 Many many JJ 36297 860 5 figures figure NNS 36297 860 6 apparently apparently RB 36297 860 7 change change VBP 36297 860 8 in in IN 36297 860 9 appearance appearance NN 36297 860 10 owing owe VBG 36297 860 11 to to IN 36297 860 12 fluctuations fluctuation NNS 36297 860 13 in in IN 36297 860 14 attention attention NN 36297 860 15 and and CC 36297 860 16 in in IN 36297 860 17 associations association NNS 36297 860 18 . . . 36297 861 1 A a DT 36297 861 2 human human JJ 36297 861 3 profile profile NN 36297 861 4 in in IN 36297 861 5 intaglio intaglio NN 36297 861 6 ( ( -LRB- 36297 861 7 Figs fig NNS 36297 861 8 . . . 36297 862 1 72 72 CD 36297 862 2 and and CC 36297 862 3 73 73 CD 36297 862 4 ) ) -RRB- 36297 862 5 may may MD 36297 862 6 appear appear VB 36297 862 7 as as IN 36297 862 8 a a DT 36297 862 9 bas bas NN 36297 862 10 - - HYPH 36297 862 11 relief relief NN 36297 862 12 . . . 36297 863 1 Crease crease VB 36297 863 2 a a DT 36297 863 3 card card NN 36297 863 4 in in IN 36297 863 5 the the DT 36297 863 6 middle middle NN 36297 863 7 to to TO 36297 863 8 form form VB 36297 863 9 an an DT 36297 863 10 angle angle NN 36297 863 11 and and CC 36297 863 12 hold hold VB 36297 863 13 it -PRON- PRP 36297 863 14 at at IN 36297 863 15 an an DT 36297 863 16 arm arm NN 36297 863 17 's 's POS 36297 863 18 length length NN 36297 863 19 . . . 36297 864 1 When when WRB 36297 864 2 viewed view VBN 36297 864 3 with with IN 36297 864 4 one one CD 36297 864 5 eye eye NN 36297 864 6 it -PRON- PRP 36297 864 7 can can MD 36297 864 8 be be VB 36297 864 9 made make VBN 36297 864 10 to to TO 36297 864 11 appear appear VB 36297 864 12 open open JJ 36297 864 13 in in IN 36297 864 14 one one CD 36297 864 15 way way NN 36297 864 16 or or CC 36297 864 17 the the DT 36297 864 18 other other JJ 36297 864 19 ; ; : 36297 864 20 that that RB 36297 864 21 is is RB 36297 864 22 , , , 36297 864 23 the the DT 36297 864 24 angle angle NN 36297 864 25 may may MD 36297 864 26 be be VB 36297 864 27 made make VBN 36297 864 28 to to TO 36297 864 29 appear appear VB 36297 864 30 pointing point VBG 36297 864 31 toward toward IN 36297 864 32 the the DT 36297 864 33 observer observer NN 36297 864 34 or or CC 36297 864 35 away away RB 36297 864 36 from from IN 36297 864 37 him -PRON- PRP 36297 864 38 . . . 36297 865 1 The the DT 36297 865 2 more more RBR 36297 865 3 distant distant JJ 36297 865 4 part part NN 36297 865 5 of of IN 36297 865 6 an an DT 36297 865 7 object object NN 36297 865 8 may may MD 36297 865 9 be be VB 36297 865 10 made make VBN 36297 865 11 to to TO 36297 865 12 appear appear VB 36297 865 13 nearer near JJR 36297 865 14 than than IN 36297 865 15 the the DT 36297 865 16 remaining remain VBG 36297 865 17 part part NN 36297 865 18 . . . 36297 866 1 Plane plane NN 36297 866 2 diagrams diagram NNS 36297 866 3 may may MD 36297 866 4 seem seem VB 36297 866 5 to to TO 36297 866 6 be be VB 36297 866 7 solids solid NNS 36297 866 8 . . . 36297 867 1 Deception deception NN 36297 867 2 of of IN 36297 867 3 this this DT 36297 867 4 character character NN 36297 867 5 is be VBZ 36297 867 6 quite quite RB 36297 867 7 easy easy JJ 36297 867 8 if if IN 36297 867 9 the the DT 36297 867 10 light light JJ 36297 867 11 - - HYPH 36297 867 12 source source NN 36297 867 13 and and CC 36297 867 14 other other JJ 36297 867 15 extraneous extraneous JJ 36297 867 16 factors factor NNS 36297 867 17 are be VBP 36297 867 18 concealed conceal VBN 36297 867 19 from from IN 36297 867 20 the the DT 36297 867 21 observer observer NN 36297 867 22 . . . 36297 868 1 It -PRON- PRP 36297 868 2 is be VBZ 36297 868 3 very very RB 36297 868 4 interesting interesting JJ 36297 868 5 to to TO 36297 868 6 study study VB 36297 868 7 these these DT 36297 868 8 fluctuating fluctuate VBG 36297 868 9 figures figure NNS 36297 868 10 and and CC 36297 868 11 to to TO 36297 868 12 note note VB 36297 868 13 the the DT 36297 868 14 various various JJ 36297 868 15 extraneous extraneous JJ 36297 868 16 data datum NNS 36297 868 17 which which WDT 36297 868 18 lead lead VBP 36297 868 19 us -PRON- PRP 36297 868 20 to to TO 36297 868 21 judge judge VB 36297 868 22 correctly correctly RB 36297 868 23 . . . 36297 869 1 Furthermore furthermore RB 36297 869 2 , , , 36297 869 3 it -PRON- PRP 36297 869 4 becomes become VBZ 36297 869 5 obvious obvious JJ 36297 869 6 that that IN 36297 869 7 often often RB 36297 869 8 we -PRON- PRP 36297 869 9 see see VBP 36297 869 10 what what WP 36297 869 11 we -PRON- PRP 36297 869 12 expect expect VBP 36297 869 13 to to TO 36297 869 14 see see VB 36297 869 15 . . . 36297 870 1 For for IN 36297 870 2 example example NN 36297 870 3 , , , 36297 870 4 we -PRON- PRP 36297 870 5 more more RBR 36297 870 6 commonly commonly RB 36297 870 7 encounter encounter VBP 36297 870 8 relief relief NN 36297 870 9 than than IN 36297 870 10 intaglio intaglio NN 36297 870 11 ; ; : 36297 870 12 therefore therefore RB 36297 870 13 , , , 36297 870 14 we -PRON- PRP 36297 870 15 are be VBP 36297 870 16 likely likely JJ 36297 870 17 to to TO 36297 870 18 think think VB 36297 870 19 that that IN 36297 870 20 we -PRON- PRP 36297 870 21 are be VBP 36297 870 22 looking look VBG 36297 870 23 at at IN 36297 870 24 the the DT 36297 870 25 former former JJ 36297 870 26 . . . 36297 871 1 Proper proper JJ 36297 871 2 consideration consideration NN 36297 871 3 of of IN 36297 871 4 the the DT 36297 871 5 position position NN 36297 871 6 of of IN 36297 871 7 the the DT 36297 871 8 dominant dominant JJ 36297 871 9 light light JJ 36297 871 10 - - HYPH 36297 871 11 source source NN 36297 871 12 and and CC 36297 871 13 of of IN 36297 871 14 the the DT 36297 871 15 shadows shadow NNS 36297 871 16 will will MD 36297 871 17 usually usually RB 36297 871 18 provide provide VB 36297 871 19 the the DT 36297 871 20 data datum NNS 36297 871 21 for for IN 36297 871 22 a a DT 36297 871 23 correct correct JJ 36297 871 24 conclusion conclusion NN 36297 871 25 . . . 36297 872 1 However however RB 36297 872 2 , , , 36297 872 3 habit habit NN 36297 872 4 and and CC 36297 872 5 probability probability NN 36297 872 6 are be VBP 36297 872 7 factors factor NNS 36297 872 8 whose whose WP$ 36297 872 9 influence influence NN 36297 872 10 is be VBZ 36297 872 11 difficult difficult JJ 36297 872 12 to to TO 36297 872 13 overcome overcome VB 36297 872 14 . . . 36297 873 1 Our -PRON- PRP$ 36297 873 2 perception perception NN 36297 873 3 is be VBZ 36297 873 4 strongly strongly RB 36297 873 5 associated associate VBN 36297 873 6 with with IN 36297 873 7 accustomed accustomed JJ 36297 873 8 ways way NNS 36297 873 9 of of IN 36297 873 10 seeing see VBG 36297 873 11 objects object NNS 36297 873 12 and and CC 36297 873 13 when when WRB 36297 873 14 the the DT 36297 873 15 object object NN 36297 873 16 is be VBZ 36297 873 17 once once RB 36297 873 18 suggested suggest VBN 36297 873 19 it -PRON- PRP 36297 873 20 grasps grasp VBZ 36297 873 21 our -PRON- PRP$ 36297 873 22 mind mind NN 36297 873 23 completely completely RB 36297 873 24 in in IN 36297 873 25 its -PRON- PRP$ 36297 873 26 stereotyped stereotyped JJ 36297 873 27 form form NN 36297 873 28 . . . 36297 874 1 Stairs stair NNS 36297 874 2 , , , 36297 874 3 glasses glass NNS 36297 874 4 , , , 36297 874 5 rings ring NNS 36297 874 6 , , , 36297 874 7 cubes cube NNS 36297 874 8 , , , 36297 874 9 and and CC 36297 874 10 intaglios intaglio NNS 36297 874 11 are be VBP 36297 874 12 among among IN 36297 874 13 the the DT 36297 874 14 objects object NNS 36297 874 15 commonly commonly RB 36297 874 16 used use VBN 36297 874 17 to to TO 36297 874 18 illustrate illustrate VB 36297 874 19 this this DT 36297 874 20 type type NN 36297 874 21 of of IN 36297 874 22 illusion illusion NN 36297 874 23 . . . 36297 875 1 In in IN 36297 875 2 connection connection NN 36297 875 3 with with IN 36297 875 4 this this DT 36297 875 5 type type NN 36297 875 6 , , , 36297 875 7 it -PRON- PRP 36297 875 8 is be VBZ 36297 875 9 well well JJ 36297 875 10 to to TO 36297 875 11 realize realize VB 36297 875 12 how how WRB 36297 875 13 tenaciously tenaciously RB 36297 875 14 we -PRON- PRP 36297 875 15 cling cling VBP 36297 875 16 to to IN 36297 875 17 our -PRON- PRP$ 36297 875 18 perception perception NN 36297 875 19 of of IN 36297 875 20 the the DT 36297 875 21 real real JJ 36297 875 22 shapes shape NNS 36297 875 23 of of IN 36297 875 24 objects object NNS 36297 875 25 . . . 36297 876 1 For for IN 36297 876 2 example example NN 36297 876 3 , , , 36297 876 4 a a DT 36297 876 5 cube cube NN 36297 876 6 thrown throw VBN 36297 876 7 into into IN 36297 876 8 the the DT 36297 876 9 air air NN 36297 876 10 in in IN 36297 876 11 such such PDT 36297 876 12 a a DT 36297 876 13 manner manner NN 36297 876 14 that that WDT 36297 876 15 it -PRON- PRP 36297 876 16 presents present VBZ 36297 876 17 many many JJ 36297 876 18 aspects aspect NNS 36297 876 19 toward toward IN 36297 876 20 us -PRON- PRP 36297 876 21 is be VBZ 36297 876 22 throughout throughout IN 36297 876 23 its -PRON- PRP$ 36297 876 24 course course NN 36297 876 25 a a DT 36297 876 26 cube cube NN 36297 876 27 . . . 36297 877 1 [ [ -LRB- 36297 877 2 Illustration illustration NN 36297 877 3 : : : 36297 877 4 Fig Fig NNP 36297 877 5 . . . 36297 878 1 27.--Illustrating 27.--illustrating CD 36297 878 2 fluctuation fluctuation NN 36297 878 3 of of IN 36297 878 4 attention attention NN 36297 878 5 . . . 36297 878 6 ] ] -RRB- 36297 879 1 The the DT 36297 879 2 figures figure NNS 36297 879 3 which which WDT 36297 879 4 exhibit exhibit VBP 36297 879 5 these these DT 36297 879 6 illusions illusion NNS 36297 879 7 are be VBP 36297 879 8 obviously obviously RB 36297 879 9 those those DT 36297 879 10 which which WDT 36297 879 11 are be VBP 36297 879 12 capable capable JJ 36297 879 13 of of IN 36297 879 14 two two CD 36297 879 15 or or CC 36297 879 16 more more JJR 36297 879 17 spatial spatial JJ 36297 879 18 relations relation NNS 36297 879 19 . . . 36297 880 1 The the DT 36297 880 2 double double JJ 36297 880 3 interpretation interpretation NN 36297 880 4 is be VBZ 36297 880 5 more more RBR 36297 880 6 readily readily RB 36297 880 7 accomplished accomplish VBN 36297 880 8 by by IN 36297 880 9 monocular monocular JJ 36297 880 10 than than IN 36297 880 11 by by IN 36297 880 12 binocular binocular JJ 36297 880 13 vision vision NN 36297 880 14 . . . 36297 881 1 Fig fig NN 36297 881 2 . . . 36297 882 1 27 27 CD 36297 882 2 consists consist NNS 36297 882 3 of of IN 36297 882 4 identical identical JJ 36297 882 5 patterns pattern NNS 36297 882 6 in in IN 36297 882 7 black black JJ 36297 882 8 and and CC 36297 882 9 white white JJ 36297 882 10 . . . 36297 883 1 By by IN 36297 883 2 gazing gaze VBG 36297 883 3 upon upon IN 36297 883 4 this this DT 36297 883 5 steadily steadily RB 36297 883 6 it -PRON- PRP 36297 883 7 will will MD 36297 883 8 appear appear VB 36297 883 9 to to TO 36297 883 10 fluctuate fluctuate VB 36297 883 11 in in IN 36297 883 12 appearance appearance NN 36297 883 13 from from IN 36297 883 14 a a DT 36297 883 15 white white JJ 36297 883 16 pattern pattern NN 36297 883 17 upon upon IN 36297 883 18 a a DT 36297 883 19 black black JJ 36297 883 20 background background NN 36297 883 21 to to IN 36297 883 22 a a DT 36297 883 23 black black JJ 36297 883 24 pattern pattern NN 36297 883 25 upon upon IN 36297 883 26 a a DT 36297 883 27 white white JJ 36297 883 28 background background NN 36297 883 29 . . . 36297 884 1 Sometimes sometimes RB 36297 884 2 fluctuation fluctuation NN 36297 884 3 of of IN 36297 884 4 attention attention NN 36297 884 5 apparently apparently RB 36297 884 6 accounts account VBZ 36297 884 7 for for IN 36297 884 8 the the DT 36297 884 9 change change NN 36297 884 10 and and CC 36297 884 11 , , , 36297 884 12 in in IN 36297 884 13 fact fact NN 36297 884 14 , , , 36297 884 15 this this DT 36297 884 16 can can MD 36297 884 17 be be VB 36297 884 18 tested test VBN 36297 884 19 by by IN 36297 884 20 willfully willfully RB 36297 884 21 altering alter VBG 36297 884 22 the the DT 36297 884 23 attention attention NN 36297 884 24 from from IN 36297 884 25 a a DT 36297 884 26 white white JJ 36297 884 27 pattern pattern NN 36297 884 28 to to IN 36297 884 29 a a DT 36297 884 30 black black JJ 36297 884 31 one one NN 36297 884 32 . . . 36297 885 1 Incidentally incidentally RB 36297 885 2 one one CD 36297 885 3 investigator investigator NN 36297 885 4 found find VBD 36297 885 5 that that IN 36297 885 6 the the DT 36297 885 7 maximum maximum JJ 36297 885 8 rate rate NN 36297 885 9 of of IN 36297 885 10 fluctuation fluctuation NN 36297 885 11 was be VBD 36297 885 12 approximately approximately RB 36297 885 13 equal equal JJ 36297 885 14 to to IN 36297 885 15 the the DT 36297 885 16 pulse pulse NN 36297 885 17 rate rate NN 36297 885 18 , , , 36297 885 19 although although IN 36297 885 20 no no DT 36297 885 21 connection connection NN 36297 885 22 between between IN 36297 885 23 the the DT 36297 885 24 two two CD 36297 885 25 was be VBD 36297 885 26 claimed claim VBN 36297 885 27 . . . 36297 886 1 It -PRON- PRP 36297 886 2 has have VBZ 36297 886 3 also also RB 36297 886 4 been be VBN 36297 886 5 found find VBN 36297 886 6 that that IN 36297 886 7 inversion inversion NN 36297 886 8 is be VBZ 36297 886 9 accompanied accompany VBN 36297 886 10 by by IN 36297 886 11 a a DT 36297 886 12 change change NN 36297 886 13 in in IN 36297 886 14 refraction refraction NN 36297 886 15 of of IN 36297 886 16 the the DT 36297 886 17 eye eye NN 36297 886 18 . . . 36297 887 1 [ [ -LRB- 36297 887 2 Illustration illustration NN 36297 887 3 : : : 36297 887 4 Fig Fig NNP 36297 887 5 . . . 36297 888 1 28.--The 28.--the CD 36297 888 2 grouping grouping NN 36297 888 3 of of IN 36297 888 4 the the DT 36297 888 5 circles circle NNS 36297 888 6 fluctuates fluctuate VBZ 36297 888 7 . . . 36297 888 8 ] ] -RRB- 36297 889 1 Another another DT 36297 889 2 example example NN 36297 889 3 is be VBZ 36297 889 4 shown show VBN 36297 889 5 in in IN 36297 889 6 Fig Fig NNP 36297 889 7 . . . 36297 890 1 28 28 CD 36297 890 2 . . . 36297 891 1 This this DT 36297 891 2 may may MD 36297 891 3 appear appear VB 36297 891 4 to to TO 36297 891 5 be be VB 36297 891 6 white white JJ 36297 891 7 circles circle NNS 36297 891 8 upon upon IN 36297 891 9 a a DT 36297 891 10 black black JJ 36297 891 11 background background NN 36297 891 12 or or CC 36297 891 13 a a DT 36297 891 14 black black JJ 36297 891 15 mesh mesh NN 36297 891 16 upon upon IN 36297 891 17 a a DT 36297 891 18 white white JJ 36297 891 19 background background NN 36297 891 20 . . . 36297 892 1 However however RB 36297 892 2 , , , 36297 892 3 the the DT 36297 892 4 more more RBR 36297 892 5 striking striking JJ 36297 892 6 phenomenon phenomenon NN 36297 892 7 is be VBZ 36297 892 8 the the DT 36297 892 9 change change NN 36297 892 10 in in IN 36297 892 11 the the DT 36297 892 12 grouping grouping NN 36297 892 13 of of IN 36297 892 14 the the DT 36297 892 15 circles circle NNS 36297 892 16 as as IN 36297 892 17 attention attention NN 36297 892 18 fluctuates fluctuate VBZ 36297 892 19 . . . 36297 893 1 We -PRON- PRP 36297 893 2 may may MD 36297 893 3 be be VB 36297 893 4 conscious conscious JJ 36297 893 5 of of IN 36297 893 6 hollow hollow JJ 36297 893 7 diamonds diamond NNS 36297 893 8 of of IN 36297 893 9 circles circle NNS 36297 893 10 , , , 36297 893 11 one one CD 36297 893 12 inside inside IN 36297 893 13 the the DT 36297 893 14 other other JJ 36297 893 15 , , , 36297 893 16 and and CC 36297 893 17 then then RB 36297 893 18 suddenly suddenly RB 36297 893 19 the the DT 36297 893 20 pattern pattern NN 36297 893 21 may may MD 36297 893 22 change change VB 36297 893 23 to to IN 36297 893 24 groups group NNS 36297 893 25 of of IN 36297 893 26 diamonds diamond NNS 36297 893 27 consisting consist VBG 36297 893 28 of of IN 36297 893 29 four four CD 36297 893 30 circles circle NNS 36297 893 31 each each DT 36297 893 32 . . . 36297 894 1 Perhaps perhaps RB 36297 894 2 we -PRON- PRP 36297 894 3 may may MD 36297 894 4 be be VB 36297 894 5 momentarily momentarily RB 36297 894 6 conscious conscious JJ 36297 894 7 of of IN 36297 894 8 individual individual JJ 36297 894 9 circles circle NNS 36297 894 10 ; ; : 36297 894 11 then then RB 36297 894 12 the the DT 36297 894 13 pattern pattern NN 36297 894 14 may may MD 36297 894 15 change change VB 36297 894 16 to to IN 36297 894 17 a a DT 36297 894 18 hexagonal hexagonal JJ 36297 894 19 one one NN 36297 894 20 , , , 36297 894 21 each each DT 36297 894 22 " " `` 36297 894 23 hexagon hexagon NNP 36297 894 24 " " '' 36297 894 25 consisting consist VBG 36297 894 26 of of IN 36297 894 27 seven seven CD 36297 894 28 circles circle NNS 36297 894 29 -- -- : 36297 894 30 six six CD 36297 894 31 surrounding surround VBG 36297 894 32 a a DT 36297 894 33 central central JJ 36297 894 34 one one NN 36297 894 35 . . . 36297 895 1 The the DT 36297 895 2 pattern pattern NN 36297 895 3 also also RB 36297 895 4 changes change VBZ 36297 895 5 into into IN 36297 895 6 parallel parallel JJ 36297 895 7 strings string NNS 36297 895 8 of of IN 36297 895 9 circles circle NNS 36297 895 10 , , , 36297 895 11 triangles triangle NNS 36297 895 12 , , , 36297 895 13 etc etc FW 36297 895 14 . . . 36297 896 1 [ [ -LRB- 36297 896 2 Illustration illustration NN 36297 896 3 : : : 36297 896 4 Fig Fig NNP 36297 896 5 . . . 36297 897 1 29.--Crossed 29.--crossed CD 36297 897 2 lines line NNS 36297 897 3 which which WDT 36297 897 4 may may MD 36297 897 5 be be VB 36297 897 6 interpreted interpret VBN 36297 897 7 in in IN 36297 897 8 two two CD 36297 897 9 ways way NNS 36297 897 10 . . . 36297 897 11 ] ] -RRB- 36297 898 1 The the DT 36297 898 2 crossed cross VBN 36297 898 3 lines line NNS 36297 898 4 in in IN 36297 898 5 Fig Fig NNP 36297 898 6 . . . 36297 899 1 29 29 CD 36297 899 2 can can MD 36297 899 3 be be VB 36297 899 4 seen see VBN 36297 899 5 as as IN 36297 899 6 right right JJ 36297 899 7 angles angle NNS 36297 899 8 in in IN 36297 899 9 perspective perspective NN 36297 899 10 with with IN 36297 899 11 two two CD 36297 899 12 different different JJ 36297 899 13 spatial spatial JJ 36297 899 14 arrangements arrangement NNS 36297 899 15 of of IN 36297 899 16 one one CD 36297 899 17 or or CC 36297 899 18 both both DT 36297 899 19 lines line NNS 36297 899 20 . . . 36297 900 1 In in IN 36297 900 2 fact fact NN 36297 900 3 there there EX 36297 900 4 is be VBZ 36297 900 5 quite quite PDT 36297 900 6 a a DT 36297 900 7 tendency tendency NN 36297 900 8 to to TO 36297 900 9 see see VB 36297 900 10 such such JJ 36297 900 11 crossed crossed JJ 36297 900 12 lines line NNS 36297 900 13 as as IN 36297 900 14 right right JJ 36297 900 15 angles angle NNS 36297 900 16 in in IN 36297 900 17 perspective perspective NN 36297 900 18 . . . 36297 901 1 The the DT 36297 901 2 two two CD 36297 901 3 groups group NNS 36297 901 4 on on IN 36297 901 5 the the DT 36297 901 6 right right JJ 36297 901 7 represent represent NN 36297 901 8 a a DT 36297 901 9 simplified simplified JJ 36297 901 10 Zöllner Zöllner NNP 36297 901 11 's 's POS 36297 901 12 illusion illusion NN 36297 901 13 ( ( -LRB- 36297 901 14 Fig fig NN 36297 901 15 . . . 36297 902 1 37 37 CD 36297 902 2 ) ) -RRB- 36297 902 3 . . . 36297 903 1 The the DT 36297 903 2 reader reader NN 36297 903 3 may may MD 36297 903 4 find find VB 36297 903 5 it -PRON- PRP 36297 903 6 interesting interesting JJ 36297 903 7 to to TO 36297 903 8 spend spend VB 36297 903 9 some some DT 36297 903 10 time time NN 36297 903 11 viewing view VBG 36297 903 12 these these DT 36297 903 13 figures figure NNS 36297 903 14 and and CC 36297 903 15 in in IN 36297 903 16 exercising exercise VBG 36297 903 17 his -PRON- PRP$ 36297 903 18 ability ability NN 36297 903 19 to to TO 36297 903 20 fluctuate fluctuate VB 36297 903 21 his -PRON- PRP$ 36297 903 22 attention attention NN 36297 903 23 . . . 36297 904 1 In in IN 36297 904 2 fact fact NN 36297 904 3 , , , 36297 904 4 he -PRON- PRP 36297 904 5 must must MD 36297 904 6 call call VB 36297 904 7 upon upon IN 36297 904 8 his -PRON- PRP$ 36297 904 9 imagination imagination NN 36297 904 10 in in IN 36297 904 11 these these DT 36297 904 12 cases case NNS 36297 904 13 . . . 36297 905 1 Sometimes sometimes RB 36297 905 2 the the DT 36297 905 3 changes change NNS 36297 905 4 are be VBP 36297 905 5 rapid rapid JJ 36297 905 6 and and CC 36297 905 7 easy easy JJ 36297 905 8 to to TO 36297 905 9 bring bring VB 36297 905 10 about about RP 36297 905 11 . . . 36297 906 1 At at IN 36297 906 2 other other JJ 36297 906 3 moments moment NNS 36297 906 4 he -PRON- PRP 36297 906 5 will will MD 36297 906 6 encounter encounter VB 36297 906 7 an an DT 36297 906 8 aggravating aggravating JJ 36297 906 9 stubbornness stubbornness NN 36297 906 10 . . . 36297 907 1 Occasionally occasionally RB 36297 907 2 there there EX 36297 907 3 may may MD 36297 907 4 appear appear VB 36297 907 5 a a DT 36297 907 6 conflict conflict NN 36297 907 7 of of IN 36297 907 8 two two CD 36297 907 9 appearances appearance NNS 36297 907 10 simultaneously simultaneously RB 36297 907 11 in in IN 36297 907 12 the the DT 36297 907 13 same same JJ 36297 907 14 figure figure NN 36297 907 15 . . . 36297 908 1 The the DT 36297 908 2 latter latter JJ 36297 908 3 may may MD 36297 908 4 be be VB 36297 908 5 observed observe VBN 36297 908 6 occasionally occasionally RB 36297 908 7 in in IN 36297 908 8 Fig Fig NNP 36297 908 9 . . . 36297 909 1 30 30 CD 36297 909 2 . . . 36297 910 1 Eye eye NN 36297 910 2 - - HYPH 36297 910 3 movements movement NNS 36297 910 4 are be VBP 36297 910 5 brought bring VBN 36297 910 6 forward forward RP 36297 910 7 by by IN 36297 910 8 some some DT 36297 910 9 to to TO 36297 910 10 aid aid VB 36297 910 11 in in IN 36297 910 12 explaining explain VBG 36297 910 13 the the DT 36297 910 14 changes change NNS 36297 910 15 . . . 36297 911 1 [ [ -LRB- 36297 911 2 Illustration illustration NN 36297 911 3 : : : 36297 911 4 Fig Fig NNP 36297 911 5 . . . 36297 912 1 30.--Reversible 30.--reversible CD 36297 912 2 cubes cube NNS 36297 912 3 . . . 36297 912 4 ] ] -RRB- 36297 913 1 In in IN 36297 913 2 Fig Fig NNP 36297 913 3 . . . 36297 914 1 30 30 CD 36297 914 2 a a DT 36297 914 3 reversal reversal NN 36297 914 4 of of IN 36297 914 5 the the DT 36297 914 6 aspect aspect NN 36297 914 7 of of IN 36297 914 8 the the DT 36297 914 9 individual individual JJ 36297 914 10 cubes cube NNS 36297 914 11 or or CC 36297 914 12 of of IN 36297 914 13 their -PRON- PRP$ 36297 914 14 perspective perspective NN 36297 914 15 is be VBZ 36297 914 16 very very RB 36297 914 17 apparent apparent JJ 36297 914 18 . . . 36297 915 1 At at IN 36297 915 2 rare rare JJ 36297 915 3 moments moment NNS 36297 915 4 the the DT 36297 915 5 effect effect NN 36297 915 6 of of IN 36297 915 7 perspective perspective NN 36297 915 8 may may MD 36297 915 9 be be VB 36297 915 10 completely completely RB 36297 915 11 vanquished vanquish VBN 36297 915 12 and and CC 36297 915 13 the the DT 36297 915 14 figure figure NN 36297 915 15 be be VB 36297 915 16 made make VBN 36297 915 17 to to TO 36297 915 18 appear appear VB 36297 915 19 as as IN 36297 915 20 a a DT 36297 915 21 plane plane NN 36297 915 22 crossed cross VBD 36297 915 23 by by IN 36297 915 24 strings string NNS 36297 915 25 of of IN 36297 915 26 white white JJ 36297 915 27 diamonds diamond NNS 36297 915 28 and and CC 36297 915 29 zigzag zigzag NNP 36297 915 30 black black JJ 36297 915 31 strips strip NNS 36297 915 32 . . . 36297 916 1 The the DT 36297 916 2 illusion illusion NN 36297 916 3 of of IN 36297 916 4 the the DT 36297 916 5 bent bent JJ 36297 916 6 card card NN 36297 916 7 or or CC 36297 916 8 partially partially RB 36297 916 9 open open JJ 36297 916 10 book book NN 36297 916 11 is be VBZ 36297 916 12 seen see VBN 36297 916 13 in in IN 36297 916 14 Fig Fig NNP 36297 916 15 . . . 36297 917 1 31 31 CD 36297 917 2 . . . 36297 918 1 The the DT 36297 918 2 tetrahedron tetrahedron NN 36297 918 3 in in IN 36297 918 4 Fig Fig NNP 36297 918 5 . . . 36297 919 1 32 32 CD 36297 919 2 may may MD 36297 919 3 appear appear VB 36297 919 4 either either CC 36297 919 5 as as IN 36297 919 6 erect erect NN 36297 919 7 on on IN 36297 919 8 its -PRON- PRP$ 36297 919 9 base base NN 36297 919 10 or or CC 36297 919 11 as as IN 36297 919 12 leaning lean VBG 36297 919 13 backward backward RB 36297 919 14 with with IN 36297 919 15 its -PRON- PRP$ 36297 919 16 base base NN 36297 919 17 seen see VBN 36297 919 18 from from IN 36297 919 19 underneath underneath NNP 36297 919 20 . . . 36297 920 1 [ [ -LRB- 36297 920 2 Illustration illustration NN 36297 920 3 : : : 36297 920 4 Fig Fig NNP 36297 920 5 . . . 36297 921 1 31.--The 31.--the CD 36297 921 2 reversible reversible JJ 36297 921 3 " " `` 36297 921 4 open open JJ 36297 921 5 book book NN 36297 921 6 " " '' 36297 921 7 ( ( -LRB- 36297 921 8 after after IN 36297 921 9 Mach Mach NNP 36297 921 10 ) ) -RRB- 36297 921 11 . . . 36297 921 12 ] ] -RRB- 36297 922 1 [ [ -LRB- 36297 922 2 Illustration illustration NN 36297 922 3 : : : 36297 922 4 Fig Fig NNP 36297 922 5 . . . 36297 923 1 32.--A 32.--A NNP 36297 923 2 reversible reversible VBP 36297 923 3 tetrahedron tetrahedron NN 36297 923 4 . . . 36297 923 5 ] ] -RRB- 36297 924 1 The the DT 36297 924 2 series series NN 36297 924 3 of of IN 36297 924 4 rings ring NNS 36297 924 5 in in IN 36297 924 6 Fig Fig NNP 36297 924 7 . . . 36297 925 1 33 33 CD 36297 925 2 may may MD 36297 925 3 be be VB 36297 925 4 imagined imagine VBN 36297 925 5 to to TO 36297 925 6 form form VB 36297 925 7 a a DT 36297 925 8 tube tube NN 36297 925 9 such such JJ 36297 925 10 as as IN 36297 925 11 a a DT 36297 925 12 sheet sheet NN 36297 925 13 - - HYPH 36297 925 14 metal metal NN 36297 925 15 pipe pipe NN 36297 925 16 with with IN 36297 925 17 its -PRON- PRP$ 36297 925 18 axis axis NN 36297 925 19 lying lie VBG 36297 925 20 in in IN 36297 925 21 either either DT 36297 925 22 of of IN 36297 925 23 two two CD 36297 925 24 directions direction NNS 36297 925 25 . . . 36297 926 1 Sometimes sometimes RB 36297 926 2 by by IN 36297 926 3 closing close VBG 36297 926 4 one one CD 36297 926 5 eye eye NN 36297 926 6 the the DT 36297 926 7 two two CD 36297 926 8 changes change NNS 36297 926 9 in in IN 36297 926 10 this this DT 36297 926 11 type type NN 36297 926 12 of of IN 36297 926 13 illusion illusion NN 36297 926 14 are be VBP 36297 926 15 more more RBR 36297 926 16 readily readily RB 36297 926 17 brought bring VBN 36297 926 18 about about RP 36297 926 19 . . . 36297 927 1 It -PRON- PRP 36297 927 2 is be VBZ 36297 927 3 also also RB 36297 927 4 interesting interesting JJ 36297 927 5 to to TO 36297 927 6 close close VB 36297 927 7 and and CC 36297 927 8 open open VB 36297 927 9 each each DT 36297 927 10 eye eye NN 36297 927 11 alternately alternately RB 36297 927 12 , , , 36297 927 13 at at IN 36297 927 14 the the DT 36297 927 15 same same JJ 36297 927 16 time time NN 36297 927 17 trying try VBG 36297 927 18 to to TO 36297 927 19 note note VB 36297 927 20 just just RB 36297 927 21 where where WRB 36297 927 22 the the DT 36297 927 23 attention attention NN 36297 927 24 is be VBZ 36297 927 25 fixed fix VBN 36297 927 26 . . . 36297 928 1 The the DT 36297 928 2 familiar familiar JJ 36297 928 3 staircase staircase NN 36297 928 4 is be VBZ 36297 928 5 represented represent VBN 36297 928 6 in in IN 36297 928 7 Fig Fig NNP 36297 928 8 . . . 36297 929 1 34 34 CD 36297 929 2 . . . 36297 930 1 It -PRON- PRP 36297 930 2 is be VBZ 36297 930 3 likely likely JJ 36297 930 4 to to TO 36297 930 5 appear appear VB 36297 930 6 in in IN 36297 930 7 its -PRON- PRP$ 36297 930 8 usual usual JJ 36297 930 9 position position NN 36297 930 10 and and CC 36297 930 11 then then RB 36297 930 12 suddenly suddenly RB 36297 930 13 to to IN 36297 930 14 invert invert NNP 36297 930 15 . . . 36297 931 1 It -PRON- PRP 36297 931 2 may may MD 36297 931 3 aid aid VB 36297 931 4 in in IN 36297 931 5 bringing bring VBG 36297 931 6 about about RP 36297 931 7 the the DT 36297 931 8 reversal reversal NN 36297 931 9 to to TO 36297 931 10 insist insist VB 36297 931 11 that that IN 36297 931 12 one one CD 36297 931 13 end end NN 36297 931 14 of of IN 36297 931 15 a a DT 36297 931 16 step step NN 36297 931 17 is be VBZ 36297 931 18 first first JJ 36297 931 19 nearer near JJR 36297 931 20 than than IN 36297 931 21 the the DT 36297 931 22 other other JJ 36297 931 23 and and CC 36297 931 24 then then RB 36297 931 25 farther far RBR 36297 931 26 away away RB 36297 931 27 . . . 36297 932 1 By by IN 36297 932 2 focusing focus VBG 36297 932 3 the the DT 36297 932 4 attention attention NN 36297 932 5 in in IN 36297 932 6 this this DT 36297 932 7 manner manner NN 36297 932 8 the the DT 36297 932 9 fluctuation fluctuation NN 36297 932 10 becomes become VBZ 36297 932 11 an an DT 36297 932 12 easy easy JJ 36297 932 13 matter matter NN 36297 932 14 to to TO 36297 932 15 obtain obtain VB 36297 932 16 . . . 36297 933 1 [ [ -LRB- 36297 933 2 Illustration illustration NN 36297 933 3 : : : 36297 933 4 Fig Fig NNP 36297 933 5 . . . 36297 934 1 33.--Reversible 33.--reversible CD 36297 934 2 perspective perspective NN 36297 934 3 of of IN 36297 934 4 a a DT 36297 934 5 group group NN 36297 934 6 of of IN 36297 934 7 rings ring NNS 36297 934 8 or or CC 36297 934 9 of of IN 36297 934 10 a a DT 36297 934 11 tube tube NN 36297 934 12 . . . 36297 934 13 ] ] -RRB- 36297 935 1 [ [ -LRB- 36297 935 2 Illustration illustration NN 36297 935 3 : : : 36297 935 4 Fig Fig NNP 36297 935 5 . . . 36297 936 1 34.--Schröder 34.--schröder PRP 36297 936 2 's 's POS 36297 936 3 reversible reversible JJ 36297 936 4 staircase staircase NN 36297 936 5 . . . 36297 936 6 ] ] -RRB- 36297 937 1 In in IN 36297 937 2 Fig Fig NNP 36297 937 3 . . . 36297 938 1 35 35 CD 36297 938 2 is be VBZ 36297 938 3 a a DT 36297 938 4 similar similar JJ 36297 938 5 example example NN 36297 938 6 . . . 36297 939 1 First first RB 36297 939 2 one one CD 36297 939 3 part part NN 36297 939 4 will will MD 36297 939 5 appear appear VB 36297 939 6 solid solid JJ 36297 939 7 and and CC 36297 939 8 the the DT 36297 939 9 other other JJ 36297 939 10 an an DT 36297 939 11 empty empty JJ 36297 939 12 corner corner NN 36297 939 13 , , , 36297 939 14 then then RB 36297 939 15 suddenly suddenly RB 36297 939 16 both both DT 36297 939 17 are be VBP 36297 939 18 reversed reversed JJ 36297 939 19 . . . 36297 940 1 However however RB 36297 940 2 , , , 36297 940 3 it -PRON- PRP 36297 940 4 is be VBZ 36297 940 5 striking strike VBG 36297 940 6 to to TO 36297 940 7 note note VB 36297 940 8 one one CD 36297 940 9 half half NN 36297 940 10 changes change NNS 36297 940 11 while while IN 36297 940 12 the the DT 36297 940 13 other other JJ 36297 940 14 remains remain VBZ 36297 940 15 unchanged unchanged JJ 36297 940 16 , , , 36297 940 17 thus thus RB 36297 940 18 producing produce VBG 36297 940 19 momentarily momentarily RB 36297 940 20 a a DT 36297 940 21 rather rather RB 36297 940 22 peculiar peculiar JJ 36297 940 23 figure figure NN 36297 940 24 consisting consist VBG 36297 940 25 of of IN 36297 940 26 two two CD 36297 940 27 solids solid NNS 36297 940 28 , , , 36297 940 29 for for IN 36297 940 30 example example NN 36297 940 31 , , , 36297 940 32 attached attach VBN 36297 940 33 by by IN 36297 940 34 necessarily necessarily RB 36297 940 35 warped warped JJ 36297 940 36 surfaces surface NNS 36297 940 37 . . . 36297 941 1 [ [ -LRB- 36297 941 2 Illustration illustration NN 36297 941 3 : : : 36297 941 4 Fig Fig NNP 36297 941 5 . . . 36297 942 1 35.--Thiéry 35.--thiéry CD 36297 942 2 's 's POS 36297 942 3 figure figure NN 36297 942 4 . . . 36297 942 5 ] ] -RRB- 36297 943 1 Perhaps perhaps RB 36297 943 2 the the DT 36297 943 3 reader reader NN 36297 943 4 has have VBZ 36297 943 5 often often RB 36297 943 6 witnessed witness VBN 36297 943 7 the the DT 36297 943 8 striking striking JJ 36297 943 9 illusion illusion NN 36297 943 10 of of IN 36297 943 11 some some DT 36297 943 12 portraits portrait NNS 36297 943 13 which which WDT 36297 943 14 were be VBD 36297 943 15 made make VBN 36297 943 16 of of IN 36297 943 17 subjects subject NNS 36297 943 18 looking look VBG 36297 943 19 directly directly RB 36297 943 20 at at IN 36297 943 21 the the DT 36297 943 22 camera camera NN 36297 943 23 or or CC 36297 943 24 painter painter NN 36297 943 25 . . . 36297 944 1 Regardless regardless RB 36297 944 2 of of IN 36297 944 3 the the DT 36297 944 4 position position NN 36297 944 5 of of IN 36297 944 6 the the DT 36297 944 7 observer observer NN 36297 944 8 the the DT 36297 944 9 eyes eye NNS 36297 944 10 of of IN 36297 944 11 the the DT 36297 944 12 portrait portrait NN 36297 944 13 appear appear VBP 36297 944 14 to to TO 36297 944 15 be be VB 36297 944 16 directed direct VBN 36297 944 17 toward toward IN 36297 944 18 him -PRON- PRP 36297 944 19 . . . 36297 945 1 In in IN 36297 945 2 fact fact NN 36297 945 3 , , , 36297 945 4 as as IN 36297 945 5 the the DT 36297 945 6 observer observer NN 36297 945 7 moves move VBZ 36297 945 8 , , , 36297 945 9 the the DT 36297 945 10 eyes eye NNS 36297 945 11 in in IN 36297 945 12 the the DT 36297 945 13 picture picture NN 36297 945 14 follow follow VBP 36297 945 15 him -PRON- PRP 36297 945 16 so so RB 36297 945 17 relentlessly relentlessly RB 36297 945 18 as as IN 36297 945 19 to to TO 36297 945 20 provoke provoke VB 36297 945 21 even even RB 36297 945 22 a a DT 36297 945 23 feeling feeling NN 36297 945 24 of of IN 36297 945 25 uncanniness uncanniness NN 36297 945 26 . . . 36297 946 1 This this DT 36297 946 2 fact fact NN 36297 946 3 is be VBZ 36297 946 4 accounted account VBN 36297 946 5 for for IN 36297 946 6 by by IN 36297 946 7 the the DT 36297 946 8 absence absence NN 36297 946 9 of of IN 36297 946 10 a a DT 36297 946 11 third third JJ 36297 946 12 dimension dimension NN 36297 946 13 , , , 36297 946 14 for for IN 36297 946 15 a a DT 36297 946 16 sculptured sculptured JJ 36297 946 17 model model NN 36297 946 18 of of IN 36297 946 19 a a DT 36297 946 20 head head NN 36297 946 21 does do VBZ 36297 946 22 not not RB 36297 946 23 exhibit exhibit VB 36297 946 24 this this DT 36297 946 25 feature feature NN 36297 946 26 . . . 36297 947 1 Perspective perspective NN 36297 947 2 plays play VBZ 36297 947 3 a a DT 36297 947 4 part part NN 36297 947 5 in in IN 36297 947 6 some some DT 36297 947 7 manner manner NN 36297 947 8 , , , 36297 947 9 but but CC 36297 947 10 no no DT 36297 947 11 attempt attempt NN 36297 947 12 toward toward IN 36297 947 13 explanation explanation NN 36297 947 14 will will MD 36297 947 15 be be VB 36297 947 16 made make VBN 36297 947 17 . . . 36297 948 1 In in IN 36297 948 2 Fig Fig NNP 36297 948 3 . . . 36297 949 1 36 36 CD 36297 949 2 are be VBP 36297 949 3 two two CD 36297 949 4 sketches sketch NNS 36297 949 5 of of IN 36297 949 6 a a DT 36297 949 7 face face NN 36297 949 8 . . . 36297 950 1 One one PRP 36297 950 2 appears appear VBZ 36297 950 3 to to TO 36297 950 4 be be VB 36297 950 5 looking look VBG 36297 950 6 at at IN 36297 950 7 the the DT 36297 950 8 observer observer NN 36297 950 9 , , , 36297 950 10 but but CC 36297 950 11 the the DT 36297 950 12 other other JJ 36297 950 13 does do VBZ 36297 950 14 not not RB 36297 950 15 . . . 36297 951 1 If if IN 36297 951 2 the the DT 36297 951 3 reader reader NN 36297 951 4 will will MD 36297 951 5 cover cover VB 36297 951 6 the the DT 36297 951 7 lower low JJR 36297 951 8 parts part NNS 36297 951 9 of of IN 36297 951 10 the the DT 36297 951 11 two two CD 36297 951 12 figures figure NNS 36297 951 13 , , , 36297 951 14 leaving leave VBG 36297 951 15 only only RB 36297 951 16 the the DT 36297 951 17 two two CD 36297 951 18 pairs pair NNS 36297 951 19 of of IN 36297 951 20 eyes eye NNS 36297 951 21 showing show VBG 36297 951 22 , , , 36297 951 23 both both DT 36297 951 24 pairs pair NNS 36297 951 25 will will MD 36297 951 26 eventually eventually RB 36297 951 27 appear appear VB 36297 951 28 to to TO 36297 951 29 be be VB 36297 951 30 looking look VBG 36297 951 31 at at IN 36297 951 32 the the DT 36297 951 33 observer observer NN 36297 951 34 . . . 36297 952 1 Perhaps perhaps RB 36297 952 2 the the DT 36297 952 3 reader reader NN 36297 952 4 will will MD 36297 952 5 be be VB 36297 952 6 conscious conscious JJ 36297 952 7 of of IN 36297 952 8 mental mental JJ 36297 952 9 effort effort NN 36297 952 10 and and CC 36297 952 11 the the DT 36297 952 12 lapse lapse NN 36297 952 13 of of IN 36297 952 14 a a DT 36297 952 15 few few JJ 36297 952 16 moments moment NNS 36297 952 17 before before IN 36297 952 18 the the DT 36297 952 19 eyes eye NNS 36297 952 20 on on IN 36297 952 21 the the DT 36297 952 22 left left NN 36297 952 23 are be VBP 36297 952 24 made make VBN 36297 952 25 to to TO 36297 952 26 appear appear VB 36297 952 27 to to TO 36297 952 28 be be VB 36297 952 29 looking look VBG 36297 952 30 directly directly RB 36297 952 31 at at IN 36297 952 32 him -PRON- PRP 36297 952 33 . . . 36297 953 1 Although although IN 36297 953 2 it -PRON- PRP 36297 953 3 is be VBZ 36297 953 4 not not RB 36297 953 5 claimed claim VBN 36297 953 6 that that IN 36297 953 7 this this DT 36297 953 8 illusion illusion NN 36297 953 9 is be VBZ 36297 953 10 caused cause VBN 36297 953 11 by by IN 36297 953 12 the the DT 36297 953 13 same same JJ 36297 953 14 conditions condition NNS 36297 953 15 as as IN 36297 953 16 those those DT 36297 953 17 immediately immediately RB 36297 953 18 preceding precede VBG 36297 953 19 , , , 36297 953 20 it -PRON- PRP 36297 953 21 involves involve VBZ 36297 953 22 attention attention NN 36297 953 23 . . . 36297 954 1 At at RB 36297 954 2 least least RBS 36297 954 3 , , , 36297 954 4 it -PRON- PRP 36297 954 5 is be VBZ 36297 954 6 fluctuating fluctuate VBG 36297 954 7 in in IN 36297 954 8 appearance appearance NN 36297 954 9 and and CC 36297 954 10 therefore therefore RB 36297 954 11 is be VBZ 36297 954 12 equivocal equivocal JJ 36297 954 13 . . . 36297 955 1 It -PRON- PRP 36297 955 2 is be VBZ 36297 955 3 interesting interesting JJ 36297 955 4 to to TO 36297 955 5 note note VB 36297 955 6 the the DT 36297 955 7 influence influence NN 36297 955 8 of of IN 36297 955 9 the the DT 36297 955 10 other other JJ 36297 955 11 features feature NNS 36297 955 12 ( ( -LRB- 36297 955 13 below below IN 36297 955 14 the the DT 36297 955 15 eyes eye NNS 36297 955 16 ) ) -RRB- 36297 955 17 . . . 36297 956 1 The the DT 36297 956 2 perspective perspective NN 36297 956 3 of of IN 36297 956 4 these these DT 36297 956 5 is be VBZ 36297 956 6 a a DT 36297 956 7 powerful powerful JJ 36297 956 8 influence influence NN 36297 956 9 in in IN 36297 956 10 " " `` 36297 956 11 directing direct VBG 36297 956 12 " " '' 36297 956 13 the the DT 36297 956 14 eyes eye NNS 36297 956 15 of of IN 36297 956 16 the the DT 36297 956 17 sketch sketch NN 36297 956 18 . . . 36297 957 1 In in IN 36297 957 2 the the DT 36297 957 3 foregoing forego VBG 36297 957 4 only only RB 36297 957 5 definite definite JJ 36297 957 6 illusions illusion NNS 36297 957 7 have have VBP 36297 957 8 been be VBN 36297 957 9 presented present VBN 36297 957 10 which which WDT 36297 957 11 are be VBP 36297 957 12 universally universally RB 36297 957 13 witnessed witness VBN 36297 957 14 by by IN 36297 957 15 normal normal JJ 36297 957 16 persons person NNS 36297 957 17 . . . 36297 958 1 There there EX 36297 958 2 are be VBP 36297 958 3 no no DT 36297 958 4 hallucinatory hallucinatory JJ 36297 958 5 phases phase NNS 36297 958 6 in in IN 36297 958 7 the the DT 36297 958 8 conditions condition NNS 36297 958 9 or or CC 36297 958 10 causes cause NNS 36297 958 11 . . . 36297 959 1 It -PRON- PRP 36297 959 2 is be VBZ 36297 959 3 difficult difficult JJ 36297 959 4 to to TO 36297 959 5 divide divide VB 36297 959 6 these these DT 36297 959 7 with with IN 36297 959 8 definiteness definiteness NN 36297 959 9 from from IN 36297 959 10 certain certain JJ 36297 959 11 illusions illusion NNS 36297 959 12 of of IN 36297 959 13 depth depth NN 36297 959 14 as as IN 36297 959 15 discussed discuss VBN 36297 959 16 in in IN 36297 959 17 Chapter Chapter NNP 36297 959 18 VII VII NNP 36297 959 19 . . . 36297 960 1 The the DT 36297 960 2 latter latter JJ 36297 960 3 undoubtedly undoubtedly RB 36297 960 4 are be VBP 36297 960 5 sometimes sometimes RB 36297 960 6 entwined entwine VBN 36297 960 7 to to IN 36297 960 8 some some DT 36297 960 9 extent extent NN 36297 960 10 with with IN 36297 960 11 hallucinatory hallucinatory JJ 36297 960 12 phases phase NNS 36297 960 13 ; ; : 36297 960 14 in in IN 36297 960 15 fact fact NN 36297 960 16 , , , 36297 960 17 it -PRON- PRP 36297 960 18 is be VBZ 36297 960 19 doubtful doubtful JJ 36297 960 20 if if IN 36297 960 21 they -PRON- PRP 36297 960 22 are be VBP 36297 960 23 not not RB 36297 960 24 always always RB 36297 960 25 hallucinations hallucination NNS 36297 960 26 to to IN 36297 960 27 some some DT 36297 960 28 degree degree NN 36297 960 29 . . . 36297 961 1 Hallucinations hallucination NNS 36297 961 2 are be VBP 36297 961 3 not not RB 36297 961 4 of of IN 36297 961 5 interest interest NN 36297 961 6 from from IN 36297 961 7 the the DT 36297 961 8 viewpoint viewpoint NN 36297 961 9 of of IN 36297 961 10 this this DT 36297 961 11 book book NN 36297 961 12 , , , 36297 961 13 but but CC 36297 961 14 illusions illusion NNS 36297 961 15 of of IN 36297 961 16 depth depth NN 36297 961 17 are be VBP 36297 961 18 treated treat VBN 36297 961 19 because because IN 36297 961 20 they -PRON- PRP 36297 961 21 are be VBP 36297 961 22 of of IN 36297 961 23 interest interest NN 36297 961 24 . . . 36297 962 1 They -PRON- PRP 36297 962 2 are be VBP 36297 962 3 either either DT 36297 962 4 hallucinations hallucination NNS 36297 962 5 or or CC 36297 962 6 are be VBP 36297 962 7 on on IN 36297 962 8 the the DT 36297 962 9 border border NN 36297 962 10 - - HYPH 36297 962 11 line line NN 36297 962 12 between between IN 36297 962 13 hallucinations hallucination NNS 36297 962 14 and and CC 36297 962 15 those those DT 36297 962 16 illusions illusion NNS 36297 962 17 which which WDT 36297 962 18 are be VBP 36297 962 19 almost almost RB 36297 962 20 universally universally RB 36297 962 21 experienced experience VBN 36297 962 22 by by IN 36297 962 23 normal normal JJ 36297 962 24 persons person NNS 36297 962 25 under under IN 36297 962 26 similar similar JJ 36297 962 27 conditions condition NNS 36297 962 28 . . . 36297 963 1 The the DT 36297 963 2 latter latter JJ 36297 963 3 statement statement NN 36297 963 4 does do VBZ 36297 963 5 not not RB 36297 963 6 hold hold VB 36297 963 7 for for IN 36297 963 8 illusions illusion NNS 36297 963 9 of of IN 36297 963 10 depth depth NN 36297 963 11 in in IN 36297 963 12 which which WDT 36297 963 13 objects object NNS 36297 963 14 may may MD 36297 963 15 be be VB 36297 963 16 seen see VBN 36297 963 17 alternately alternately RB 36297 963 18 near near RB 36297 963 19 and and CC 36297 963 20 far far RB 36297 963 21 , , , 36297 963 22 large large JJ 36297 963 23 and and CC 36297 963 24 small small JJ 36297 963 25 , , , 36297 963 26 etc etc FW 36297 963 27 . . FW 36297 963 28 , , , 36297 963 29 although although IN 36297 963 30 they -PRON- PRP 36297 963 31 are be VBP 36297 963 32 not not RB 36297 963 33 necessarily necessarily RB 36297 963 34 pure pure JJ 36297 963 35 hallucinations hallucination NNS 36297 963 36 as as IN 36297 963 37 distinguished distinguish VBN 36297 963 38 from from IN 36297 963 39 the the DT 36297 963 40 types type NNS 36297 963 41 of of IN 36297 963 42 illusions illusion NNS 36297 963 43 regarding regard VBG 36297 963 44 which which WDT 36297 963 45 there there EX 36297 963 46 is be VBZ 36297 963 47 general general JJ 36297 963 48 perceptual perceptual JJ 36297 963 49 agreement agreement NN 36297 963 50 . . . 36297 964 1 [ [ -LRB- 36297 964 2 Illustration illustration NN 36297 964 3 : : : 36297 964 4 Fig Fig NNP 36297 964 5 . . . 36297 965 1 36.--Illustrating 36.--illustrating CD 36297 965 2 certain certain JJ 36297 965 3 influences influence NNS 36297 965 4 upon upon IN 36297 965 5 the the DT 36297 965 6 apparent apparent JJ 36297 965 7 direction direction NN 36297 965 8 of of IN 36297 965 9 vision vision NN 36297 965 10 . . . 36297 966 1 By by IN 36297 966 2 covering cover VBG 36297 966 3 all all DT 36297 966 4 but but IN 36297 966 5 the the DT 36297 966 6 eyes eye NNS 36297 966 7 the the DT 36297 966 8 latter latter JJ 36297 966 9 appear appear VBP 36297 966 10 to to TO 36297 966 11 be be VB 36297 966 12 drawn draw VBN 36297 966 13 alike alike RB 36297 966 14 in in IN 36297 966 15 both both DT 36297 966 16 sketches sketch NNS 36297 966 17 . . . 36297 966 18 ] ] -RRB- 36297 967 1 In in IN 36297 967 2 explanation explanation NN 36297 967 3 of of IN 36297 967 4 the the DT 36297 967 5 illusory illusory JJ 36297 967 6 phenomena phenomenon NNS 36297 967 7 pertaining pertain VBG 36297 967 8 to to IN 36297 967 9 such such JJ 36297 967 10 geometrical geometrical JJ 36297 967 11 figures figure NNS 36297 967 12 as as IN 36297 967 13 are be VBP 36297 967 14 discussed discuss VBN 36297 967 15 in in IN 36297 967 16 the the DT 36297 967 17 foregoing foregoing JJ 36297 967 18 paragraphs paragraph NNS 36297 967 19 , , , 36297 967 20 chiefly chiefly RB 36297 967 21 two two CD 36297 967 22 different different JJ 36297 967 23 kinds kind NNS 36297 967 24 of of IN 36297 967 25 hypotheses hypothesis NNS 36297 967 26 have have VBP 36297 967 27 been be VBN 36297 967 28 offered offer VBN 36297 967 29 . . . 36297 968 1 They -PRON- PRP 36297 968 2 are be VBP 36297 968 3 respectively respectively RB 36297 968 4 psychological psychological JJ 36297 968 5 and and CC 36297 968 6 physiological physiological JJ 36297 968 7 , , , 36297 968 8 although although IN 36297 968 9 there there EX 36297 968 10 is be VBZ 36297 968 11 more more RBR 36297 968 12 or or CC 36297 968 13 less less JJR 36297 968 14 of of IN 36297 968 15 a a DT 36297 968 16 mixture mixture NN 36297 968 17 of of IN 36297 968 18 the the DT 36297 968 19 two two CD 36297 968 20 in in IN 36297 968 21 most most JJS 36297 968 22 attempts attempt NNS 36297 968 23 toward toward IN 36297 968 24 explanation explanation NN 36297 968 25 . . . 36297 969 1 The the DT 36297 969 2 psychological psychological JJ 36297 969 3 hypotheses hypothesis NNS 36297 969 4 introduce introduce VBP 36297 969 5 such such JJ 36297 969 6 factors factor NNS 36297 969 7 as as IN 36297 969 8 attention attention NN 36297 969 9 , , , 36297 969 10 imagination imagination NN 36297 969 11 , , , 36297 969 12 judgment judgment NN 36297 969 13 , , , 36297 969 14 and and CC 36297 969 15 will will MD 36297 969 16 . . . 36297 970 1 Hering hering NN 36297 970 2 and and CC 36297 970 3 also also RB 36297 970 4 Helmholtz Helmholtz NNP 36297 970 5 claim claim NN 36297 970 6 that that IN 36297 970 7 the the DT 36297 970 8 kind kind NN 36297 970 9 of of IN 36297 970 10 inversion inversion NN 36297 970 11 which which WDT 36297 970 12 occurs occur VBZ 36297 970 13 is be VBZ 36297 970 14 largely largely RB 36297 970 15 a a DT 36297 970 16 matter matter NN 36297 970 17 of of IN 36297 970 18 chance chance NN 36297 970 19 or or CC 36297 970 20 of of IN 36297 970 21 volition volition NN 36297 970 22 . . . 36297 971 1 The the DT 36297 971 2 latter latter NN 36297 971 3 holds hold VBZ 36297 971 4 that that IN 36297 971 5 the the DT 36297 971 6 perception perception NN 36297 971 7 of of IN 36297 971 8 perspective perspective JJ 36297 971 9 figures figure NNS 36297 971 10 is be VBZ 36297 971 11 influenced influence VBN 36297 971 12 by by IN 36297 971 13 imagination imagination NN 36297 971 14 or or CC 36297 971 15 the the DT 36297 971 16 images image NNS 36297 971 17 of of IN 36297 971 18 memory memory NN 36297 971 19 . . . 36297 972 1 That that RB 36297 972 2 is is RB 36297 972 3 , , , 36297 972 4 if if IN 36297 972 5 one one CD 36297 972 6 form form NN 36297 972 7 of of IN 36297 972 8 the the DT 36297 972 9 figure figure NN 36297 972 10 is be VBZ 36297 972 11 vividly vividly RB 36297 972 12 imagined imagine VBN 36297 972 13 the the DT 36297 972 14 perception perception NN 36297 972 15 of of IN 36297 972 16 it -PRON- PRP 36297 972 17 is be VBZ 36297 972 18 imminent imminent JJ 36297 972 19 . . . 36297 973 1 Helmholtz Helmholtz NNP 36297 973 2 has have VBZ 36297 973 3 stated state VBN 36297 973 4 that that IN 36297 973 5 , , , 36297 973 6 " " `` 36297 973 7 Glancing glance VBG 36297 973 8 at at IN 36297 973 9 a a DT 36297 973 10 figure figure NN 36297 973 11 we -PRON- PRP 36297 973 12 observe observe VBP 36297 973 13 spontaneously spontaneously RB 36297 973 14 one one CD 36297 973 15 or or CC 36297 973 16 the the DT 36297 973 17 other other JJ 36297 973 18 form form NN 36297 973 19 of of IN 36297 973 20 perspective perspective NN 36297 973 21 and and CC 36297 973 22 usually usually RB 36297 973 23 the the DT 36297 973 24 one one NN 36297 973 25 that that WDT 36297 973 26 is be VBZ 36297 973 27 associated associate VBN 36297 973 28 in in IN 36297 973 29 our -PRON- PRP$ 36297 973 30 memory memory NN 36297 973 31 with with IN 36297 973 32 the the DT 36297 973 33 greatest great JJS 36297 973 34 number number NN 36297 973 35 of of IN 36297 973 36 images image NNS 36297 973 37 . . . 36297 973 38 " " '' 36297 974 1 The the DT 36297 974 2 physiological physiological JJ 36297 974 3 hypotheses hypothesis NNS 36297 974 4 depend depend VBP 36297 974 5 largely largely RB 36297 974 6 upon upon IN 36297 974 7 such such JJ 36297 974 8 factors factor NNS 36297 974 9 as as IN 36297 974 10 accommodation accommodation NN 36297 974 11 and and CC 36297 974 12 eye eye NN 36297 974 13 - - HYPH 36297 974 14 movement movement NN 36297 974 15 . . . 36297 975 1 Necker Necker NNP 36297 975 2 held hold VBD 36297 975 3 to to IN 36297 975 4 the the DT 36297 975 5 former former JJ 36297 975 6 as as IN 36297 975 7 the the DT 36297 975 8 chief chief NN 36297 975 9 cause cause NN 36297 975 10 . . . 36297 976 1 He -PRON- PRP 36297 976 2 has have VBZ 36297 976 3 stated state VBN 36297 976 4 that that IN 36297 976 5 the the DT 36297 976 6 part part NN 36297 976 7 of of IN 36297 976 8 the the DT 36297 976 9 figure figure NN 36297 976 10 whose whose WP$ 36297 976 11 image image NN 36297 976 12 lies lie VBZ 36297 976 13 near near IN 36297 976 14 the the DT 36297 976 15 fovea fovea NN 36297 976 16 is be VBZ 36297 976 17 estimated estimate VBN 36297 976 18 as as IN 36297 976 19 nearer near JJR 36297 976 20 than than IN 36297 976 21 those those DT 36297 976 22 portions portion NNS 36297 976 23 in in IN 36297 976 24 the the DT 36297 976 25 peripheral peripheral JJ 36297 976 26 regions region NNS 36297 976 27 of of IN 36297 976 28 the the DT 36297 976 29 visual visual JJ 36297 976 30 field field NN 36297 976 31 . . . 36297 977 1 This this DT 36297 977 2 hypothesis hypothesis NN 36297 977 3 is be VBZ 36297 977 4 open open JJ 36297 977 5 to to IN 36297 977 6 serious serious JJ 36297 977 7 objections objection NNS 36297 977 8 . . . 36297 978 1 Wundt Wundt NNP 36297 978 2 contends contend VBZ 36297 978 3 that that IN 36297 978 4 the the DT 36297 978 5 inversion inversion NN 36297 978 6 is be VBZ 36297 978 7 caused cause VBN 36297 978 8 by by IN 36297 978 9 changes change NNS 36297 978 10 in in IN 36297 978 11 the the DT 36297 978 12 points point NNS 36297 978 13 and and CC 36297 978 14 lines line NNS 36297 978 15 of of IN 36297 978 16 fixation fixation NN 36297 978 17 . . . 36297 979 1 He -PRON- PRP 36297 979 2 says say VBZ 36297 979 3 , , , 36297 979 4 " " `` 36297 979 5 The the DT 36297 979 6 image image NN 36297 979 7 of of IN 36297 979 8 the the DT 36297 979 9 retina retina NNP 36297 979 10 ought ought MD 36297 979 11 to to TO 36297 979 12 have have VB 36297 979 13 a a DT 36297 979 14 determined determined JJ 36297 979 15 position position NN 36297 979 16 if if IN 36297 979 17 a a DT 36297 979 18 perspective perspective JJ 36297 979 19 illusion illusion NN 36297 979 20 is be VBZ 36297 979 21 to to TO 36297 979 22 appear appear VB 36297 979 23 ; ; : 36297 979 24 but but CC 36297 979 25 the the DT 36297 979 26 form form NN 36297 979 27 of of IN 36297 979 28 this this DT 36297 979 29 illusion illusion NN 36297 979 30 is be VBZ 36297 979 31 entirely entirely RB 36297 979 32 dependent dependent JJ 36297 979 33 on on IN 36297 979 34 motion motion NN 36297 979 35 and and CC 36297 979 36 direction direction NN 36297 979 37 . . . 36297 979 38 " " '' 36297 980 1 Some some DT 36297 980 2 hypotheses hypothesis NNS 36297 980 3 interweave interweave VBP 36297 980 4 the the DT 36297 980 5 known know VBN 36297 980 6 facts fact NNS 36297 980 7 of of IN 36297 980 8 the the DT 36297 980 9 nervous nervous JJ 36297 980 10 system system NN 36297 980 11 with with IN 36297 980 12 psychological psychological JJ 36297 980 13 facts fact NNS 36297 980 14 but but CC 36297 980 15 some some DT 36297 980 16 of of IN 36297 980 17 these these DT 36297 980 18 are be VBP 36297 980 19 examples example NNS 36297 980 20 of of IN 36297 980 21 a a DT 36297 980 22 common common JJ 36297 980 23 anomaly anomaly IN 36297 980 24 in in IN 36297 980 25 theorization theorization NN 36297 980 26 , , , 36297 980 27 for for IN 36297 980 28 facts fact NNS 36297 980 29 plus plus CC 36297 980 30 facts fact NNS 36297 980 31 do do VBP 36297 980 32 not not RB 36297 980 33 necessarily necessarily RB 36297 980 34 result result VB 36297 980 35 in in IN 36297 980 36 a a DT 36297 980 37 correct correct JJ 36297 980 38 theory theory NN 36297 980 39 . . . 36297 981 1 That that RB 36297 981 2 is is RB 36297 981 3 , , , 36297 981 4 two two CD 36297 981 5 sets set NNS 36297 981 6 of of IN 36297 981 7 facts fact NNS 36297 981 8 interwoven interwoven RB 36297 981 9 do do VBP 36297 981 10 not not RB 36297 981 11 necessarily necessarily RB 36297 981 12 yield yield VB 36297 981 13 an an DT 36297 981 14 explanation explanation NN 36297 981 15 which which WDT 36297 981 16 is be VBZ 36297 981 17 correct correct JJ 36297 981 18 . . . 36297 982 1 VI VI NNP 36297 982 2 THE the DT 36297 982 3 INFLUENCE influence NN 36297 982 4 OF of IN 36297 982 5 ANGLES ANGLES NNP 36297 982 6 As as RB 36297 982 7 previously previously RB 36297 982 8 stated state VBN 36297 982 9 , , , 36297 982 10 no no DT 36297 982 11 satisfactory satisfactory JJ 36297 982 12 classification classification NN 36297 982 13 of of IN 36297 982 14 visual visual JJ 36297 982 15 illusions illusion NNS 36297 982 16 exists exist VBZ 36297 982 17 , , , 36297 982 18 but but CC 36297 982 19 in in IN 36297 982 20 order order NN 36297 982 21 to to TO 36297 982 22 cover cover VB 36297 982 23 the the DT 36297 982 24 subject subject NN 36297 982 25 , , , 36297 982 26 divisions division NNS 36297 982 27 are be VBP 36297 982 28 necessary necessary JJ 36297 982 29 . . . 36297 983 1 For for IN 36297 983 2 this this DT 36297 983 3 reason reason NN 36297 983 4 the the DT 36297 983 5 reader reader NN 36297 983 6 is be VBZ 36297 983 7 introduced introduce VBN 36297 983 8 in in IN 36297 983 9 this this DT 36297 983 10 chapter chapter NN 36297 983 11 to to IN 36297 983 12 the the DT 36297 983 13 effects effect NNS 36297 983 14 attending attend VBG 36297 983 15 the the DT 36297 983 16 presence presence NN 36297 983 17 of of IN 36297 983 18 angles angle NNS 36297 983 19 . . . 36297 984 1 By by IN 36297 984 2 no no DT 36297 984 3 means means NN 36297 984 4 does do VBZ 36297 984 5 it -PRON- PRP 36297 984 6 follow follow VB 36297 984 7 that that IN 36297 984 8 this this DT 36297 984 9 group group NN 36297 984 10 represents represent VBZ 36297 984 11 another another DT 36297 984 12 type type NN 36297 984 13 , , , 36297 984 14 for for IN 36297 984 15 it -PRON- PRP 36297 984 16 really really RB 36297 984 17 includes include VBZ 36297 984 18 many many JJ 36297 984 19 illusions illusion NNS 36297 984 20 of of IN 36297 984 21 several several JJ 36297 984 22 types type NNS 36297 984 23 . . . 36297 985 1 The the DT 36297 985 2 reason reason NN 36297 985 3 for for IN 36297 985 4 this this DT 36297 985 5 grouping grouping NN 36297 985 6 is be VBZ 36297 985 7 that that IN 36297 985 8 angles angle NNS 36297 985 9 play play VBP 36297 985 10 an an DT 36297 985 11 important important JJ 36297 985 12 part part NN 36297 985 13 , , , 36297 985 14 directly directly RB 36297 985 15 or or CC 36297 985 16 indirectly indirectly RB 36297 985 17 , , , 36297 985 18 in in IN 36297 985 19 the the DT 36297 985 20 production production NN 36297 985 21 of of IN 36297 985 22 illusions illusion NNS 36297 985 23 . . . 36297 986 1 For for IN 36297 986 2 a a DT 36297 986 3 long long JJ 36297 986 4 time time NN 36297 986 5 many many JJ 36297 986 6 geometrical geometrical JJ 36297 986 7 illusions illusion NNS 36297 986 8 were be VBD 36297 986 9 accounted account VBN 36297 986 10 for for IN 36297 986 11 by by IN 36297 986 12 " " `` 36297 986 13 overestimation overestimation NN 36297 986 14 " " '' 36297 986 15 or or CC 36297 986 16 " " `` 36297 986 17 underestimation underestimation NN 36297 986 18 " " '' 36297 986 19 of of IN 36297 986 20 angles angle NNS 36297 986 21 , , , 36297 986 22 but but CC 36297 986 23 this this DT 36297 986 24 view view NN 36297 986 25 has have VBZ 36297 986 26 often often RB 36297 986 27 been be VBN 36297 986 28 found find VBN 36297 986 29 to to TO 36297 986 30 be be VB 36297 986 31 inadequate inadequate JJ 36297 986 32 . . . 36297 987 1 However however RB 36297 987 2 , , , 36297 987 3 it -PRON- PRP 36297 987 4 can can MD 36297 987 5 not not RB 36297 987 6 be be VB 36297 987 7 denied deny VBN 36297 987 8 that that IN 36297 987 9 many many JJ 36297 987 10 illusions illusion NNS 36297 987 11 are be VBP 36297 987 12 due due JJ 36297 987 13 at at IN 36297 987 14 least least RBS 36297 987 15 to to IN 36297 987 16 the the DT 36297 987 17 presence presence NN 36297 987 18 of of IN 36297 987 19 angles angle NNS 36297 987 20 . . . 36297 988 1 Apparently apparently RB 36297 988 2 Zöllner Zöllner NNP 36297 988 3 was be VBD 36297 988 4 the the DT 36297 988 5 first first JJ 36297 988 6 to to TO 36297 988 7 describe describe VB 36297 988 8 an an DT 36297 988 9 illusion illusion NN 36297 988 10 which which WDT 36297 988 11 is be VBZ 36297 988 12 illustrated illustrate VBN 36297 988 13 in in IN 36297 988 14 simple simple JJ 36297 988 15 form form NN 36297 988 16 in in IN 36297 988 17 Fig Fig NNP 36297 988 18 . . . 36297 989 1 29 29 CD 36297 989 2 and and CC 36297 989 3 more more RBR 36297 989 4 elaborately elaborately RB 36297 989 5 in in IN 36297 989 6 Figs Figs NNP 36297 989 7 . . . 36297 990 1 37 37 CD 36297 990 2 to to IN 36297 990 3 40 40 CD 36297 990 4 . . . 36297 991 1 The the DT 36297 991 2 two two CD 36297 991 3 figures figure NNS 36297 991 4 at at IN 36297 991 5 the the DT 36297 991 6 right right NN 36297 991 7 of of IN 36297 991 8 Fig Fig NNP 36297 991 9 . . . 36297 992 1 29 29 CD 36297 992 2 were be VBD 36297 992 3 drawn draw VBN 36297 992 4 for for IN 36297 992 5 another another DT 36297 992 6 purpose purpose NN 36297 992 7 and and CC 36297 992 8 are be VBP 36297 992 9 not not RB 36297 992 10 designed design VBN 36297 992 11 favorably favorably RB 36297 992 12 for for IN 36297 992 13 the the DT 36297 992 14 effect effect NN 36297 992 15 , , , 36297 992 16 although although IN 36297 992 17 it -PRON- PRP 36297 992 18 may may MD 36297 992 19 be be VB 36297 992 20 detected detect VBN 36297 992 21 when when WRB 36297 992 22 the the DT 36297 992 23 figure figure NN 36297 992 24 is be VBZ 36297 992 25 held hold VBN 36297 992 26 at at IN 36297 992 27 a a DT 36297 992 28 distance distance NN 36297 992 29 . . . 36297 993 1 Zöllner Zöllner NNP 36297 993 2 accidentally accidentally RB 36297 993 3 noticed notice VBD 36297 993 4 the the DT 36297 993 5 illusion illusion NN 36297 993 6 on on IN 36297 993 7 a a DT 36297 993 8 pattern pattern NN 36297 993 9 designed design VBN 36297 993 10 for for IN 36297 993 11 a a DT 36297 993 12 print print NN 36297 993 13 for for IN 36297 993 14 dress dress NN 36297 993 15 - - HYPH 36297 993 16 goods good NNS 36297 993 17 . . . 36297 994 1 The the DT 36297 994 2 illusion illusion NN 36297 994 3 is be VBZ 36297 994 4 but but CC 36297 994 5 slightly slightly RB 36297 994 6 noticeable noticeable JJ 36297 994 7 in in IN 36297 994 8 Fig Fig NNP 36297 994 9 . . . 36297 995 1 29 29 CD 36297 995 2 , , , 36297 995 3 but but CC 36297 995 4 by by IN 36297 995 5 multiplying multiply VBG 36297 995 6 the the DT 36297 995 7 number number NN 36297 995 8 of of IN 36297 995 9 lines line NNS 36297 995 10 ( ( -LRB- 36297 995 11 and and CC 36297 995 12 angles angle NNS 36297 995 13 ) ) -RRB- 36297 995 14 the the DT 36297 995 15 long long JJ 36297 995 16 parallel parallel JJ 36297 995 17 lines line NNS 36297 995 18 appear appear VBP 36297 995 19 to to TO 36297 995 20 diverge diverge VB 36297 995 21 in in IN 36297 995 22 the the DT 36297 995 23 direction direction NN 36297 995 24 that that IN 36297 995 25 the the DT 36297 995 26 crossing crossing NNP 36297 995 27 lines line NNS 36297 995 28 converge converge VBP 36297 995 29 . . . 36297 996 1 Zöllner Zöllner NNP 36297 996 2 studied study VBD 36297 996 3 the the DT 36297 996 4 case case NN 36297 996 5 thoroughly thoroughly RB 36297 996 6 and and CC 36297 996 7 established establish VBD 36297 996 8 various various JJ 36297 996 9 facts fact NNS 36297 996 10 . . . 36297 997 1 He -PRON- PRP 36297 997 2 found find VBD 36297 997 3 that that IN 36297 997 4 the the DT 36297 997 5 illusion illusion NN 36297 997 6 is be VBZ 36297 997 7 greatest great JJS 36297 997 8 when when WRB 36297 997 9 the the DT 36297 997 10 long long JJ 36297 997 11 parallel parallel JJ 36297 997 12 lines line NNS 36297 997 13 are be VBP 36297 997 14 inclined incline VBN 36297 997 15 about about IN 36297 997 16 45 45 CD 36297 997 17 degrees degree NNS 36297 997 18 to to IN 36297 997 19 the the DT 36297 997 20 horizontal horizontal NN 36297 997 21 . . . 36297 998 1 This this DT 36297 998 2 may may MD 36297 998 3 be be VB 36297 998 4 accomplished accomplish VBN 36297 998 5 for for IN 36297 998 6 Fig Fig NNP 36297 998 7 . . . 36297 999 1 37 37 CD 36297 999 2 , , , 36297 999 3 by by IN 36297 999 4 turning turn VBG 36297 999 5 the the DT 36297 999 6 page page NN 36297 999 7 ( ( -LRB- 36297 999 8 held hold VBN 36297 999 9 in in IN 36297 999 10 a a DT 36297 999 11 vertical vertical JJ 36297 999 12 plane plane NN 36297 999 13 ) ) -RRB- 36297 999 14 through through IN 36297 999 15 an an DT 36297 999 16 angle angle NN 36297 999 17 of of IN 36297 999 18 45 45 CD 36297 999 19 degrees degree NNS 36297 999 20 from from IN 36297 999 21 normal normal JJ 36297 999 22 . . . 36297 1000 1 The the DT 36297 1000 2 illusion illusion NN 36297 1000 3 vanishes vanish VBZ 36297 1000 4 when when WRB 36297 1000 5 held hold VBN 36297 1000 6 too too RB 36297 1000 7 far far RB 36297 1000 8 from from IN 36297 1000 9 the the DT 36297 1000 10 eye eye NN 36297 1000 11 to to TO 36297 1000 12 distinguish distinguish VB 36297 1000 13 the the DT 36297 1000 14 short short JJ 36297 1000 15 crossing crossing NN 36297 1000 16 lines line NNS 36297 1000 17 , , , 36297 1000 18 and and CC 36297 1000 19 its -PRON- PRP$ 36297 1000 20 strength strength NN 36297 1000 21 varies vary VBZ 36297 1000 22 with with IN 36297 1000 23 the the DT 36297 1000 24 inclination inclination NN 36297 1000 25 of of IN 36297 1000 26 the the DT 36297 1000 27 oblique oblique JJ 36297 1000 28 lines line NNS 36297 1000 29 to to IN 36297 1000 30 the the DT 36297 1000 31 main main JJ 36297 1000 32 parallels parallel NNS 36297 1000 33 . . . 36297 1001 1 The the DT 36297 1001 2 most most RBS 36297 1001 3 effective effective JJ 36297 1001 4 angle angle NN 36297 1001 5 between between IN 36297 1001 6 the the DT 36297 1001 7 short short JJ 36297 1001 8 crossing crossing NN 36297 1001 9 lines line NNS 36297 1001 10 and and CC 36297 1001 11 the the DT 36297 1001 12 main main JJ 36297 1001 13 parallels parallel NNS 36297 1001 14 appears appear VBZ 36297 1001 15 to to TO 36297 1001 16 be be VB 36297 1001 17 approximately approximately RB 36297 1001 18 30 30 CD 36297 1001 19 degrees degree NNS 36297 1001 20 . . . 36297 1002 1 In in IN 36297 1002 2 Fig Fig NNP 36297 1002 3 . . . 36297 1003 1 37 37 CD 36297 1003 2 there there EX 36297 1003 3 are be VBP 36297 1003 4 two two CD 36297 1003 5 illusions illusion NNS 36297 1003 6 of of IN 36297 1003 7 direction direction NN 36297 1003 8 . . . 36297 1004 1 The the DT 36297 1004 2 parallel parallel JJ 36297 1004 3 vertical vertical JJ 36297 1004 4 strips strip NNS 36297 1004 5 appear appear VBP 36297 1004 6 unparallel unparallel NNS 36297 1004 7 and and CC 36297 1004 8 the the DT 36297 1004 9 right right JJ 36297 1004 10 and and CC 36297 1004 11 left leave VBD 36297 1004 12 portions portion NNS 36297 1004 13 of of IN 36297 1004 14 the the DT 36297 1004 15 oblique oblique NNP 36297 1004 16 cross cross NNP 36297 1004 17 - - NNS 36297 1004 18 lines line NNS 36297 1004 19 appear appear VBP 36297 1004 20 to to TO 36297 1004 21 be be VB 36297 1004 22 shifted shift VBN 36297 1004 23 vertically vertically RB 36297 1004 24 . . . 36297 1005 1 It -PRON- PRP 36297 1005 2 is be VBZ 36297 1005 3 interesting interesting JJ 36297 1005 4 to to TO 36297 1005 5 note note VB 36297 1005 6 that that IN 36297 1005 7 steady steady JJ 36297 1005 8 fixation fixation NN 36297 1005 9 diminishes diminishe NNS 36297 1005 10 and and CC 36297 1005 11 even even RB 36297 1005 12 destroys destroy VBZ 36297 1005 13 the the DT 36297 1005 14 illusion illusion NN 36297 1005 15 . . . 36297 1006 1 [ [ -LRB- 36297 1006 2 Illustration illustration NN 36297 1006 3 : : : 36297 1006 4 Fig Fig NNP 36297 1006 5 . . . 36297 1007 1 37.--Zöllner 37.--zöllner CD 36297 1007 2 's 's POS 36297 1007 3 illusion illusion NN 36297 1007 4 of of IN 36297 1007 5 direction direction NN 36297 1007 6 . . . 36297 1007 7 ] ] -RRB- 36297 1008 1 The the DT 36297 1008 2 maximum maximum JJ 36297 1008 3 effectiveness effectiveness NN 36297 1008 4 of of IN 36297 1008 5 the the DT 36297 1008 6 illusion illusion NN 36297 1008 7 , , , 36297 1008 8 when when WRB 36297 1008 9 the the DT 36297 1008 10 figure figure NN 36297 1008 11 is be VBZ 36297 1008 12 held hold VBN 36297 1008 13 so so IN 36297 1008 14 that that IN 36297 1008 15 the the DT 36297 1008 16 main main JJ 36297 1008 17 parallel parallel JJ 36297 1008 18 lines line NNS 36297 1008 19 are be VBP 36297 1008 20 at at IN 36297 1008 21 an an DT 36297 1008 22 inclination inclination NN 36297 1008 23 of of IN 36297 1008 24 about about IN 36297 1008 25 45 45 CD 36297 1008 26 degrees degree NNS 36297 1008 27 to to IN 36297 1008 28 the the DT 36297 1008 29 horizontal horizontal NN 36297 1008 30 was be VBD 36297 1008 31 accounted account VBN 36297 1008 32 for for IN 36297 1008 33 by by IN 36297 1008 34 Zöllner Zöllner NNP 36297 1008 35 as as IN 36297 1008 36 the the DT 36297 1008 37 result result NN 36297 1008 38 of of IN 36297 1008 39 less less JJR 36297 1008 40 visual visual JJ 36297 1008 41 experience experience NN 36297 1008 42 in in IN 36297 1008 43 oblique oblique JJ 36297 1008 44 directions direction NNS 36297 1008 45 . . . 36297 1009 1 He -PRON- PRP 36297 1009 2 insisted insist VBD 36297 1009 3 that that IN 36297 1009 4 it -PRON- PRP 36297 1009 5 takes take VBZ 36297 1009 6 less less JJR 36297 1009 7 time time NN 36297 1009 8 and and CC 36297 1009 9 is be VBZ 36297 1009 10 easier easy JJR 36297 1009 11 to to TO 36297 1009 12 infer infer VB 36297 1009 13 divergence divergence NN 36297 1009 14 or or CC 36297 1009 15 convergence convergence NN 36297 1009 16 than than IN 36297 1009 17 parallelism parallelism NN 36297 1009 18 . . . 36297 1010 1 This this DT 36297 1010 2 explanation explanation NN 36297 1010 3 appears appear VBZ 36297 1010 4 to to TO 36297 1010 5 be be VB 36297 1010 6 disproved disprove VBN 36297 1010 7 by by IN 36297 1010 8 a a DT 36297 1010 9 figure figure NN 36297 1010 10 in in IN 36297 1010 11 which which WDT 36297 1010 12 slightly slightly RB 36297 1010 13 divergent divergent JJ 36297 1010 14 lines line NNS 36297 1010 15 are be VBP 36297 1010 16 used use VBN 36297 1010 17 instead instead RB 36297 1010 18 of of IN 36297 1010 19 parallel parallel JJ 36297 1010 20 ones one NNS 36297 1010 21 . . . 36297 1011 1 Owing owe VBG 36297 1011 2 to to IN 36297 1011 3 the the DT 36297 1011 4 effect effect NN 36297 1011 5 of of IN 36297 1011 6 the the DT 36297 1011 7 oblique oblique JJ 36297 1011 8 crossing crossing NNP 36297 1011 9 lines line NNS 36297 1011 10 , , , 36297 1011 11 the the DT 36297 1011 12 diverging diverge VBG 36297 1011 13 lines line NNS 36297 1011 14 may may MD 36297 1011 15 be be VB 36297 1011 16 made make VBN 36297 1011 17 to to TO 36297 1011 18 appear appear VB 36297 1011 19 parallel parallel NN 36297 1011 20 . . . 36297 1012 1 Furthermore furthermore RB 36297 1012 2 it -PRON- PRP 36297 1012 3 is be VBZ 36297 1012 4 difficult difficult JJ 36297 1012 5 to to TO 36297 1012 6 attach attach VB 36297 1012 7 much much JJ 36297 1012 8 importance importance NN 36297 1012 9 to to IN 36297 1012 10 Zöllner Zöllner NNP 36297 1012 11 's 's POS 36297 1012 12 explanation explanation NN 36297 1012 13 because because IN 36297 1012 14 the the DT 36297 1012 15 illusion illusion NN 36297 1012 16 is be VBZ 36297 1012 17 visible visible JJ 36297 1012 18 under under IN 36297 1012 19 the the DT 36297 1012 20 extremely extremely RB 36297 1012 21 brief brief JJ 36297 1012 22 illumination illumination NN 36297 1012 23 provided provide VBN 36297 1012 24 by by IN 36297 1012 25 one one CD 36297 1012 26 electric electric JJ 36297 1012 27 spark spark NN 36297 1012 28 . . . 36297 1013 1 Of of RB 36297 1013 2 course course RB 36297 1013 3 , , , 36297 1013 4 the the DT 36297 1013 5 duration duration NN 36297 1013 6 of of IN 36297 1013 7 the the DT 36297 1013 8 physiological physiological JJ 36297 1013 9 reaction reaction NN 36297 1013 10 is be VBZ 36297 1013 11 doubtless doubtless RB 36297 1013 12 greater great JJR 36297 1013 13 than than IN 36297 1013 14 that that DT 36297 1013 15 of of IN 36297 1013 16 the the DT 36297 1013 17 spark spark NN 36297 1013 18 , , , 36297 1013 19 but but CC 36297 1013 20 at at IN 36297 1013 21 best good JJS 36297 1013 22 the the DT 36297 1013 23 time time NN 36297 1013 24 is be VBZ 36297 1013 25 very very RB 36297 1013 26 short short JJ 36297 1013 27 . . . 36297 1014 1 Hering hering NN 36297 1014 2 explained explain VBD 36297 1014 3 the the DT 36297 1014 4 Zöllner Zöllner NNP 36297 1014 5 illusion illusion NN 36297 1014 6 as as IN 36297 1014 7 due due JJ 36297 1014 8 to to IN 36297 1014 9 the the DT 36297 1014 10 curvature curvature NN 36297 1014 11 of of IN 36297 1014 12 the the DT 36297 1014 13 retina retina NNP 36297 1014 14 , , , 36297 1014 15 and and CC 36297 1014 16 the the DT 36297 1014 17 resulting result VBG 36297 1014 18 difference difference NN 36297 1014 19 in in IN 36297 1014 20 the the DT 36297 1014 21 retinal retinal JJ 36297 1014 22 images image NNS 36297 1014 23 , , , 36297 1014 24 and and CC 36297 1014 25 held hold VBD 36297 1014 26 that that IN 36297 1014 27 acute acute JJ 36297 1014 28 angles angle NNS 36297 1014 29 appear appear VBP 36297 1014 30 relatively relatively RB 36297 1014 31 too too RB 36297 1014 32 large large JJ 36297 1014 33 and and CC 36297 1014 34 obtuse obtuse JJ 36297 1014 35 ones one NNS 36297 1014 36 too too RB 36297 1014 37 small small JJ 36297 1014 38 . . . 36297 1015 1 The the DT 36297 1015 2 latter latter NN 36297 1015 3 has have VBZ 36297 1015 4 been be VBN 36297 1015 5 found find VBN 36297 1015 6 to to TO 36297 1015 7 have have VB 36297 1015 8 limitations limitation NNS 36297 1015 9 in in IN 36297 1015 10 the the DT 36297 1015 11 explanation explanation NN 36297 1015 12 of of IN 36297 1015 13 certain certain JJ 36297 1015 14 illusions illusion NNS 36297 1015 15 . . . 36297 1016 1 This this DT 36297 1016 2 Zöllner Zöllner NNP 36297 1016 3 illusion illusion NN 36297 1016 4 is be VBZ 36297 1016 5 very very RB 36297 1016 6 striking striking JJ 36297 1016 7 and and CC 36297 1016 8 may may MD 36297 1016 9 be be VB 36297 1016 10 constructed construct VBN 36297 1016 11 in in IN 36297 1016 12 a a DT 36297 1016 13 variety variety NN 36297 1016 14 of of IN 36297 1016 15 forms form NNS 36297 1016 16 . . . 36297 1017 1 In in IN 36297 1017 2 Fig Fig NNP 36297 1017 3 . . . 36297 1018 1 37 37 CD 36297 1018 2 the the DT 36297 1018 3 effect effect NN 36297 1018 4 is be VBZ 36297 1018 5 quite quite RB 36297 1018 6 apparent apparent JJ 36297 1018 7 and and CC 36297 1018 8 it -PRON- PRP 36297 1018 9 is be VBZ 36297 1018 10 interesting interesting JJ 36297 1018 11 to to TO 36297 1018 12 view view VB 36297 1018 13 the the DT 36297 1018 14 figure figure NN 36297 1018 15 at at IN 36297 1018 16 various various JJ 36297 1018 17 angles angle NNS 36297 1018 18 . . . 36297 1019 1 For for IN 36297 1019 2 example example NN 36297 1019 3 , , , 36297 1019 4 hold hold VB 36297 1019 5 the the DT 36297 1019 6 figure figure NN 36297 1019 7 so so IN 36297 1019 8 that that IN 36297 1019 9 the the DT 36297 1019 10 broad broad JJ 36297 1019 11 parallel parallel JJ 36297 1019 12 lines line NNS 36297 1019 13 are be VBP 36297 1019 14 vertical vertical JJ 36297 1019 15 . . . 36297 1020 1 The the DT 36297 1020 2 illusion illusion NN 36297 1020 3 is be VBZ 36297 1020 4 very very RB 36297 1020 5 pronounced pronounced JJ 36297 1020 6 in in IN 36297 1020 7 this this DT 36297 1020 8 position position NN 36297 1020 9 ; ; : 36297 1020 10 however however RB 36297 1020 11 , , , 36297 1020 12 on on IN 36297 1020 13 tilting tilt VBG 36297 1020 14 the the DT 36297 1020 15 page page NN 36297 1020 16 backward backward RB 36297 1020 17 the the DT 36297 1020 18 illusion illusion NN 36297 1020 19 finally finally RB 36297 1020 20 disappears disappear VBZ 36297 1020 21 . . . 36297 1021 1 In in IN 36297 1021 2 Fig Fig NNP 36297 1021 3 . . . 36297 1022 1 38 38 CD 36297 1022 2 the the DT 36297 1022 3 short short JJ 36297 1022 4 oblique oblique JJ 36297 1022 5 lines line NNS 36297 1022 6 do do VBP 36297 1022 7 not not RB 36297 1022 8 cross cross VB 36297 1022 9 the the DT 36297 1022 10 long long JJ 36297 1022 11 parallel parallel JJ 36297 1022 12 lines line NNS 36297 1022 13 and and CC 36297 1022 14 to to TO 36297 1022 15 make make VB 36297 1022 16 the the DT 36297 1022 17 illusion illusion NN 36297 1022 18 more more RBR 36297 1022 19 striking striking JJ 36297 1022 20 , , , 36297 1022 21 the the DT 36297 1022 22 obliquity obliquity NN 36297 1022 23 of of IN 36297 1022 24 the the DT 36297 1022 25 short short JJ 36297 1022 26 lines line NNS 36297 1022 27 is be VBZ 36297 1022 28 reversed reverse VBN 36297 1022 29 at at IN 36297 1022 30 the the DT 36297 1022 31 middle middle NN 36297 1022 32 of of IN 36297 1022 33 the the DT 36297 1022 34 long long JJ 36297 1022 35 parallel parallel JJ 36297 1022 36 lines line NNS 36297 1022 37 . . . 36297 1023 1 Variations variation NNS 36297 1023 2 of of IN 36297 1023 3 this this DT 36297 1023 4 figure figure NN 36297 1023 5 are be VBP 36297 1023 6 presented present VBN 36297 1023 7 in in IN 36297 1023 8 Figs Figs NNP 36297 1023 9 . . . 36297 1024 1 39 39 CD 36297 1024 2 and and CC 36297 1024 3 40 40 CD 36297 1024 4 . . . 36297 1025 1 In in IN 36297 1025 2 this this DT 36297 1025 3 case case NN 36297 1025 4 by by IN 36297 1025 5 steady steady JJ 36297 1025 6 fixation fixation NN 36297 1025 7 the the DT 36297 1025 8 perspective perspective JJ 36297 1025 9 effect effect NN 36297 1025 10 is be VBZ 36297 1025 11 increased increase VBN 36297 1025 12 but but CC 36297 1025 13 there there EX 36297 1025 14 is be VBZ 36297 1025 15 a a DT 36297 1025 16 tendency tendency NN 36297 1025 17 for for IN 36297 1025 18 the the DT 36297 1025 19 parallel parallel JJ 36297 1025 20 lines line NNS 36297 1025 21 to to TO 36297 1025 22 appear appear VB 36297 1025 23 more more RBR 36297 1025 24 nearly nearly RB 36297 1025 25 truly truly RB 36297 1025 26 parallel parallel JJ 36297 1025 27 than than IN 36297 1025 28 when when WRB 36297 1025 29 the the DT 36297 1025 30 point point NN 36297 1025 31 of of IN 36297 1025 32 sight sight NN 36297 1025 33 is be VBZ 36297 1025 34 permitted permit VBN 36297 1025 35 to to TO 36297 1025 36 roam roam VB 36297 1025 37 over over IN 36297 1025 38 the the DT 36297 1025 39 figures figure NNS 36297 1025 40 . . . 36297 1026 1 [ [ -LRB- 36297 1026 2 Illustration illustration NN 36297 1026 3 : : : 36297 1026 4 Fig Fig NNP 36297 1026 5 . . . 36297 1027 1 38.--Parallel 38.--parallel CD 36297 1027 2 lines line NNS 36297 1027 3 which which WDT 36297 1027 4 do do VBP 36297 1027 5 not not RB 36297 1027 6 appear appear VB 36297 1027 7 so so RB 36297 1027 8 . . . 36297 1027 9 ] ] -RRB- 36297 1028 1 [ [ -LRB- 36297 1028 2 Illustration illustration NN 36297 1028 3 : : : 36297 1028 4 Fig Fig NNP 36297 1028 5 . . . 36297 1029 1 39.--Wundt 39.--wundt CD 36297 1029 2 's 's POS 36297 1029 3 illusion illusion NN 36297 1029 4 of of IN 36297 1029 5 direction direction NN 36297 1029 6 . . . 36297 1029 7 ] ] -RRB- 36297 1030 1 [ [ -LRB- 36297 1030 2 Illustration illustration NN 36297 1030 3 : : : 36297 1030 4 Fig Fig NNP 36297 1030 5 . . . 36297 1031 1 40.--Hering 40.--hering CD 36297 1031 2 's 's POS 36297 1031 3 illusion illusion NN 36297 1031 4 of of IN 36297 1031 5 direction direction NN 36297 1031 6 . . . 36297 1031 7 ] ] -RRB- 36297 1032 1 Many many JJ 36297 1032 2 investigations investigation NNS 36297 1032 3 of of IN 36297 1032 4 the the DT 36297 1032 5 Zöllner Zöllner NNP 36297 1032 6 illusion illusion NN 36297 1032 7 are be VBP 36297 1032 8 recorded record VBN 36297 1032 9 in in IN 36297 1032 10 the the DT 36297 1032 11 literature literature NN 36297 1032 12 . . . 36297 1033 1 From from IN 36297 1033 2 these these DT 36297 1033 3 it -PRON- PRP 36297 1033 4 is be VBZ 36297 1033 5 obvious obvious JJ 36297 1033 6 that that IN 36297 1033 7 the the DT 36297 1033 8 result result NN 36297 1033 9 is be VBZ 36297 1033 10 due due JJ 36297 1033 11 to to IN 36297 1033 12 the the DT 36297 1033 13 additive additive JJ 36297 1033 14 effects effect NNS 36297 1033 15 of of IN 36297 1033 16 many many JJ 36297 1033 17 simple simple JJ 36297 1033 18 illusions illusion NNS 36297 1033 19 of of IN 36297 1033 20 angle angle NN 36297 1033 21 . . . 36297 1034 1 In in IN 36297 1034 2 order order NN 36297 1034 3 to to TO 36297 1034 4 give give VB 36297 1034 5 an an DT 36297 1034 6 idea idea NN 36297 1034 7 of of IN 36297 1034 8 the the DT 36297 1034 9 manner manner NN 36297 1034 10 in in IN 36297 1034 11 which which WDT 36297 1034 12 such such PDT 36297 1034 13 an an DT 36297 1034 14 illusion illusion NN 36297 1034 15 may may MD 36297 1034 16 be be VB 36297 1034 17 built build VBN 36297 1034 18 up up RP 36297 1034 19 the the DT 36297 1034 20 reasoning reasoning NN 36297 1034 21 of of IN 36297 1034 22 Jastrow[1 Jastrow[1 NNP 36297 1034 23 ] ] -RRB- 36297 1034 24 will will MD 36297 1034 25 be be VB 36297 1034 26 presented present VBN 36297 1034 27 in in IN 36297 1034 28 condensed condense VBN 36297 1034 29 form form NN 36297 1034 30 . . . 36297 1035 1 When when WRB 36297 1035 2 two two CD 36297 1035 3 straight straight JJ 36297 1035 4 lines line NNS 36297 1035 5 such such JJ 36297 1035 6 as as IN 36297 1035 7 _ _ NNP 36297 1035 8 A A NNP 36297 1035 9 _ _ NNP 36297 1035 10 and and CC 36297 1035 11 _ _ NNP 36297 1035 12 B B NNP 36297 1035 13 _ _ NNP 36297 1035 14 in in IN 36297 1035 15 Fig Fig NNP 36297 1035 16 . . . 36297 1036 1 41 41 CD 36297 1036 2 are be VBP 36297 1036 3 separated separate VBN 36297 1036 4 by by IN 36297 1036 5 a a DT 36297 1036 6 space space NN 36297 1036 7 it -PRON- PRP 36297 1036 8 is be VBZ 36297 1036 9 usually usually RB 36297 1036 10 possible possible JJ 36297 1036 11 to to TO 36297 1036 12 connect connect VB 36297 1036 13 the the DT 36297 1036 14 two two CD 36297 1036 15 mentally mentally RB 36297 1036 16 and and CC 36297 1036 17 to to TO 36297 1036 18 determine determine VB 36297 1036 19 whether whether IN 36297 1036 20 or or CC 36297 1036 21 not not RB 36297 1036 22 , , , 36297 1036 23 if if IN 36297 1036 24 connected connect VBN 36297 1036 25 , , , 36297 1036 26 they -PRON- PRP 36297 1036 27 would would MD 36297 1036 28 lie lie VB 36297 1036 29 on on IN 36297 1036 30 a a DT 36297 1036 31 straight straight JJ 36297 1036 32 line line NN 36297 1036 33 . . . 36297 1037 1 However however RB 36297 1037 2 , , , 36297 1037 3 if if IN 36297 1037 4 another another DT 36297 1037 5 line line NN 36297 1037 6 is be VBZ 36297 1037 7 connected connect VBN 36297 1037 8 to to IN 36297 1037 9 one one CD 36297 1037 10 , , , 36297 1037 11 thus thus RB 36297 1037 12 forming form VBG 36297 1037 13 an an DT 36297 1037 14 angle angle NN 36297 1037 15 as as IN 36297 1037 16 _ _ NNP 36297 1037 17 C C NNP 36297 1037 18 _ _ NNP 36297 1037 19 does do VBZ 36297 1037 20 with with IN 36297 1037 21 _ _ NNP 36297 1037 22 A A NNP 36297 1037 23 _ _ NNP 36297 1037 24 , , , 36297 1037 25 the the DT 36297 1037 26 lines line NNS 36297 1037 27 which which WDT 36297 1037 28 appeared appear VBD 36297 1037 29 to to TO 36297 1037 30 be be VB 36297 1037 31 continuous continuous JJ 36297 1037 32 ( ( -LRB- 36297 1037 33 as as IN 36297 1037 34 _ _ NNP 36297 1037 35 A A NNP 36297 1037 36 _ _ NNP 36297 1037 37 and and CC 36297 1037 38 _ _ NNP 36297 1037 39 B B NNP 36297 1037 40 _ _ NNP 36297 1037 41 originally originally RB 36297 1037 42 ) ) -RRB- 36297 1037 43 no no RB 36297 1037 44 longer longer RB 36297 1037 45 appear appear VBP 36297 1037 46 so so RB 36297 1037 47 . . . 36297 1038 1 The the DT 36297 1038 2 converse converse NN 36297 1038 3 is be VBZ 36297 1038 4 also also RB 36297 1038 5 true true JJ 36297 1038 6 , , , 36297 1038 7 for for IN 36297 1038 8 lines line NNS 36297 1038 9 which which WDT 36297 1038 10 are be VBP 36297 1038 11 not not RB 36297 1038 12 in in IN 36297 1038 13 the the DT 36297 1038 14 same same JJ 36297 1038 15 straight straight JJ 36297 1038 16 line line NN 36297 1038 17 may may MD 36297 1038 18 be be VB 36297 1038 19 made make VBN 36297 1038 20 to to TO 36297 1038 21 appear appear VB 36297 1038 22 to to TO 36297 1038 23 be be VB 36297 1038 24 by by IN 36297 1038 25 the the DT 36297 1038 26 addition addition NN 36297 1038 27 of of IN 36297 1038 28 another another DT 36297 1038 29 line line NN 36297 1038 30 forming form VBG 36297 1038 31 a a DT 36297 1038 32 proper proper JJ 36297 1038 33 angle angle NN 36297 1038 34 . . . 36297 1039 1 All all PDT 36297 1039 2 these these DT 36297 1039 3 variations variation NNS 36297 1039 4 can can MD 36297 1039 5 not not RB 36297 1039 6 be be VB 36297 1039 7 shown show VBN 36297 1039 8 in in IN 36297 1039 9 a a DT 36297 1039 10 single single JJ 36297 1039 11 figure figure NN 36297 1039 12 , , , 36297 1039 13 but but CC 36297 1039 14 the the DT 36297 1039 15 reader reader NN 36297 1039 16 will will MD 36297 1039 17 find find VB 36297 1039 18 it -PRON- PRP 36297 1039 19 interesting interesting JJ 36297 1039 20 to to TO 36297 1039 21 draw draw VB 36297 1039 22 them -PRON- PRP 36297 1039 23 . . . 36297 1040 1 Furthermore furthermore RB 36297 1040 2 , , , 36297 1040 3 the the DT 36297 1040 4 letters letter NNS 36297 1040 5 used use VBN 36297 1040 6 on on IN 36297 1040 7 the the DT 36297 1040 8 diagram diagram NN 36297 1040 9 in in IN 36297 1040 10 order order NN 36297 1040 11 to to TO 36297 1040 12 make make VB 36297 1040 13 the the DT 36297 1040 14 description description NN 36297 1040 15 clearer clear JJR 36297 1040 16 may may MD 36297 1040 17 be be VB 36297 1040 18 confusing confusing JJ 36297 1040 19 and and CC 36297 1040 20 these these DT 36297 1040 21 can can MD 36297 1040 22 be be VB 36297 1040 23 eliminated eliminate VBN 36297 1040 24 by by IN 36297 1040 25 redrawing redrawe VBG 36297 1040 26 the the DT 36297 1040 27 figure figure NN 36297 1040 28 . . . 36297 1041 1 In in IN 36297 1041 2 Fig Fig NNP 36297 1041 3 . . . 36297 1042 1 41 41 CD 36297 1042 2 the the DT 36297 1042 3 obtuse obtuse JJ 36297 1042 4 angle angle NN 36297 1042 5 _ _ NNP 36297 1042 6 AC AC NNP 36297 1042 7 _ _ NNP 36297 1042 8 tends tend VBZ 36297 1042 9 to to TO 36297 1042 10 tilt tilt VB 36297 1042 11 _ _ NNP 36297 1042 12 A A NNP 36297 1042 13 _ _ NNP 36297 1042 14 downward downward RB 36297 1042 15 , , , 36297 1042 16 so so RB 36297 1042 17 apparently apparently RB 36297 1042 18 if if IN 36297 1042 19 _ _ NNP 36297 1042 20 A A NNP 36297 1042 21 _ _ NNP 36297 1042 22 were be VBD 36297 1042 23 prolonged prolong VBN 36297 1042 24 it -PRON- PRP 36297 1042 25 would would MD 36297 1042 26 fall fall VB 36297 1042 27 below below IN 36297 1042 28 _ _ NNP 36297 1042 29 B B NNP 36297 1042 30 _ _ NNP 36297 1042 31 . . . 36297 1043 1 Similarly similarly RB 36297 1043 2 , , , 36297 1043 3 _ _ NNP 36297 1043 4 C C NNP 36297 1043 5 _ _ NNP 36297 1043 6 appears appear VBZ 36297 1043 7 to to TO 36297 1043 8 fall fall VB 36297 1043 9 to to IN 36297 1043 10 the the DT 36297 1043 11 right right NN 36297 1043 12 of of IN 36297 1043 13 _ _ NNP 36297 1043 14 D D NNP 36297 1043 15 _ _ NNP 36297 1043 16 . . . 36297 1044 1 [ [ -LRB- 36297 1044 2 Illustration illustration NN 36297 1044 3 : : : 36297 1044 4 Fig Fig NNP 36297 1044 5 . . . 36297 1045 1 41.--Simple 41.--simple CD 36297 1045 2 effect effect NN 36297 1045 3 of of IN 36297 1045 4 angles angle NNS 36297 1045 5 . . . 36297 1045 6 ] ] -RRB- 36297 1046 1 This this DT 36297 1046 2 illusion illusion NN 36297 1046 3 apparently apparently RB 36297 1046 4 is be VBZ 36297 1046 5 due due JJ 36297 1046 6 to to IN 36297 1046 7 the the DT 36297 1046 8 presence presence NN 36297 1046 9 of of IN 36297 1046 10 the the DT 36297 1046 11 angle angle NN 36297 1046 12 and and CC 36297 1046 13 the the DT 36297 1046 14 effect effect NN 36297 1046 15 is be VBZ 36297 1046 16 produced produce VBN 36297 1046 17 by by IN 36297 1046 18 the the DT 36297 1046 19 presence presence NN 36297 1046 20 of of IN 36297 1046 21 right right JJ 36297 1046 22 and and CC 36297 1046 23 acute acute JJ 36297 1046 24 angles angle NNS 36297 1046 25 to to IN 36297 1046 26 a a DT 36297 1046 27 less less JJR 36297 1046 28 degree degree NN 36297 1046 29 . . . 36297 1047 1 The the DT 36297 1047 2 illusion illusion NN 36297 1047 3 decreases decrease VBZ 36297 1047 4 or or CC 36297 1047 5 increases increase NNS 36297 1047 6 in in IN 36297 1047 7 general general JJ 36297 1047 8 as as IN 36297 1047 9 the the DT 36297 1047 10 angle angle NN 36297 1047 11 decreases decrease VBZ 36297 1047 12 or or CC 36297 1047 13 increases increase VBZ 36297 1047 14 respectively respectively RB 36297 1047 15 . . . 36297 1048 1 Although although IN 36297 1048 2 it -PRON- PRP 36297 1048 3 is be VBZ 36297 1048 4 not not RB 36297 1048 5 safe safe JJ 36297 1048 6 to to TO 36297 1048 7 present present VB 36297 1048 8 simple simple JJ 36297 1048 9 statements statement NNS 36297 1048 10 in in IN 36297 1048 11 a a DT 36297 1048 12 field field NN 36297 1048 13 so so RB 36297 1048 14 complex complex JJ 36297 1048 15 as as IN 36297 1048 16 that that DT 36297 1048 17 of of IN 36297 1048 18 visual visual JJ 36297 1048 19 illusion illusion NN 36297 1048 20 where where WRB 36297 1048 21 explanations explanation NNS 36297 1048 22 are be VBP 36297 1048 23 still still RB 36297 1048 24 controversial controversial JJ 36297 1048 25 , , , 36297 1048 26 it -PRON- PRP 36297 1048 27 is be VBZ 36297 1048 28 perhaps perhaps RB 36297 1048 29 possible possible JJ 36297 1048 30 to to TO 36297 1048 31 generalize generalize VB 36297 1048 32 as as IN 36297 1048 33 Jastrow Jastrow NNP 36297 1048 34 did do VBD 36297 1048 35 in in IN 36297 1048 36 the the DT 36297 1048 37 foregoing foregoing NN 36297 1048 38 case case NN 36297 1048 39 as as IN 36297 1048 40 follows follow VBZ 36297 1048 41 : : : 36297 1048 42 If if IN 36297 1048 43 the the DT 36297 1048 44 direction direction NN 36297 1048 45 of of IN 36297 1048 46 an an DT 36297 1048 47 angle angle NN 36297 1048 48 is be VBZ 36297 1048 49 that that DT 36297 1048 50 of of IN 36297 1048 51 the the DT 36297 1048 52 line line NN 36297 1048 53 bisecting bisect VBG 36297 1048 54 it -PRON- PRP 36297 1048 55 and and CC 36297 1048 56 pointing point VBG 36297 1048 57 toward toward IN 36297 1048 58 the the DT 36297 1048 59 apex apex NN 36297 1048 60 , , , 36297 1048 61 the the DT 36297 1048 62 direction direction NN 36297 1048 63 of of IN 36297 1048 64 the the DT 36297 1048 65 sides side NNS 36297 1048 66 of of IN 36297 1048 67 an an DT 36297 1048 68 angle angle NN 36297 1048 69 will will MD 36297 1048 70 apparently apparently RB 36297 1048 71 be be VB 36297 1048 72 deviated deviate VBN 36297 1048 73 toward toward IN 36297 1048 74 the the DT 36297 1048 75 direction direction NN 36297 1048 76 of of IN 36297 1048 77 the the DT 36297 1048 78 angle angle NN 36297 1048 79 . . . 36297 1049 1 The the DT 36297 1049 2 deviation deviation NN 36297 1049 3 apparently apparently RB 36297 1049 4 is be VBZ 36297 1049 5 greater great JJR 36297 1049 6 with with IN 36297 1049 7 obtuse obtuse NN 36297 1049 8 than than IN 36297 1049 9 with with IN 36297 1049 10 acute acute JJ 36297 1049 11 angles angle NNS 36297 1049 12 , , , 36297 1049 13 and and CC 36297 1049 14 when when WRB 36297 1049 15 obtuse obtuse JJ 36297 1049 16 and and CC 36297 1049 17 acute acute JJ 36297 1049 18 angles angle NNS 36297 1049 19 are be VBP 36297 1049 20 so so RB 36297 1049 21 placed place VBN 36297 1049 22 in in IN 36297 1049 23 a a DT 36297 1049 24 figure figure NN 36297 1049 25 as as IN 36297 1049 26 to to TO 36297 1049 27 give give VB 36297 1049 28 rise rise NN 36297 1049 29 to to IN 36297 1049 30 opposite opposite JJ 36297 1049 31 deviations deviation NNS 36297 1049 32 , , , 36297 1049 33 the the DT 36297 1049 34 greater great JJR 36297 1049 35 angle angle NN 36297 1049 36 will will MD 36297 1049 37 be be VB 36297 1049 38 the the DT 36297 1049 39 dominant dominant JJ 36297 1049 40 influence influence NN 36297 1049 41 . . . 36297 1050 1 Although although IN 36297 1050 2 the the DT 36297 1050 3 illusion illusion NN 36297 1050 4 in in IN 36297 1050 5 such such JJ 36297 1050 6 simple simple JJ 36297 1050 7 cases case NNS 36297 1050 8 as as IN 36297 1050 9 Fig Fig NNP 36297 1050 10 . . . 36297 1051 1 41 41 CD 36297 1051 2 is be VBZ 36297 1051 3 slight slight JJ 36297 1051 4 , , , 36297 1051 5 it -PRON- PRP 36297 1051 6 is be VBZ 36297 1051 7 quite quite RB 36297 1051 8 noticeable noticeable JJ 36297 1051 9 . . . 36297 1052 1 The the DT 36297 1052 2 effect effect NN 36297 1052 3 of of IN 36297 1052 4 the the DT 36297 1052 5 addition addition NN 36297 1052 6 of of IN 36297 1052 7 many many JJ 36297 1052 8 of of IN 36297 1052 9 these these DT 36297 1052 10 slight slight JJ 36297 1052 11 individual individual JJ 36297 1052 12 influences influence NNS 36297 1052 13 is be VBZ 36297 1052 14 obvious obvious JJ 36297 1052 15 in in IN 36297 1052 16 accompanying accompanying JJ 36297 1052 17 figures figure NNS 36297 1052 18 of of IN 36297 1052 19 greater great JJR 36297 1052 20 complexity complexity NN 36297 1052 21 . . . 36297 1053 1 These these DT 36297 1053 2 individual individual JJ 36297 1053 3 effects effect NNS 36297 1053 4 can can MD 36297 1053 5 be be VB 36297 1053 6 so so RB 36297 1053 7 multiplied multiplied JJ 36297 1053 8 and and CC 36297 1053 9 combined combine VBD 36297 1053 10 that that IN 36297 1053 11 many many JJ 36297 1053 12 illusory illusory JJ 36297 1053 13 figures figure NNS 36297 1053 14 may may MD 36297 1053 15 be be VB 36297 1053 16 devised devise VBN 36297 1053 17 . . . 36297 1054 1 In in IN 36297 1054 2 Fig Fig NNP 36297 1054 3 . . . 36297 1055 1 42 42 CD 36297 1055 2 the the DT 36297 1055 3 oblique oblique JJ 36297 1055 4 lines line NNS 36297 1055 5 are be VBP 36297 1055 6 added add VBN 36297 1055 7 to to IN 36297 1055 8 both both DT 36297 1055 9 horizontal horizontal JJ 36297 1055 10 lines line NNS 36297 1055 11 in in IN 36297 1055 12 such such PDT 36297 1055 13 a a DT 36297 1055 14 manner manner NN 36297 1055 15 that that WDT 36297 1055 16 _ _ NNP 36297 1055 17 A A NNP 36297 1055 18 _ _ NNP 36297 1055 19 is be VBZ 36297 1055 20 tilted tilt VBN 36297 1055 21 downward downward RB 36297 1055 22 at at IN 36297 1055 23 the the DT 36297 1055 24 angle angle NN 36297 1055 25 and and CC 36297 1055 26 _ _ NNP 36297 1055 27 B B NNP 36297 1055 28 _ _ NNP 36297 1055 29 is be VBZ 36297 1055 30 tilted tilt VBN 36297 1055 31 upward upward RB 36297 1055 32 at at IN 36297 1055 33 the the DT 36297 1055 34 angle angle NN 36297 1055 35 ( ( -LRB- 36297 1055 36 the the DT 36297 1055 37 letters letter NNS 36297 1055 38 corresponding correspond VBG 36297 1055 39 to to IN 36297 1055 40 similar similar JJ 36297 1055 41 lines line NNS 36297 1055 42 in in IN 36297 1055 43 Fig Fig NNP 36297 1055 44 . . . 36297 1056 1 41 41 CD 36297 1056 2 ) ) -RRB- 36297 1056 3 . . . 36297 1057 1 In in IN 36297 1057 2 this this DT 36297 1057 3 manner manner NN 36297 1057 4 they -PRON- PRP 36297 1057 5 appear appear VBP 36297 1057 6 to to TO 36297 1057 7 be be VB 36297 1057 8 deviated deviate VBN 36297 1057 9 considerably considerably RB 36297 1057 10 out out IN 36297 1057 11 of of IN 36297 1057 12 their -PRON- PRP$ 36297 1057 13 true true JJ 36297 1057 14 straight straight JJ 36297 1057 15 line line NN 36297 1057 16 . . . 36297 1058 1 If if IN 36297 1058 2 the the DT 36297 1058 3 reader reader NN 36297 1058 4 will will MD 36297 1058 5 draw draw VB 36297 1058 6 a a DT 36297 1058 7 straight straight JJ 36297 1058 8 line line NN 36297 1058 9 nearly nearly RB 36297 1058 10 parallel parallel JJ 36297 1058 11 to to IN 36297 1058 12 _ _ NNP 36297 1058 13 D D NNP 36297 1058 14 _ _ NNP 36297 1058 15 in in IN 36297 1058 16 Fig Fig NNP 36297 1058 17 . . . 36297 1059 1 41 41 CD 36297 1059 2 and and CC 36297 1059 3 to to IN 36297 1059 4 the the DT 36297 1059 5 right right NN 36297 1059 6 , , , 36297 1059 7 he -PRON- PRP 36297 1059 8 will will MD 36297 1059 9 find find VB 36297 1059 10 it -PRON- PRP 36297 1059 11 helpful helpful JJ 36297 1059 12 . . . 36297 1060 1 This this DT 36297 1060 2 line line NN 36297 1060 3 should should MD 36297 1060 4 be be VB 36297 1060 5 drawn draw VBN 36297 1060 6 to to TO 36297 1060 7 appear appear VB 36297 1060 8 to to TO 36297 1060 9 be be VB 36297 1060 10 a a DT 36297 1060 11 continuation continuation NN 36297 1060 12 of of IN 36297 1060 13 _ _ NNP 36297 1060 14 C C NNP 36297 1060 15 _ _ NNP 36297 1060 16 when when WRB 36297 1060 17 the the DT 36297 1060 18 page page NN 36297 1060 19 is be VBZ 36297 1060 20 held hold VBN 36297 1060 21 so so IN 36297 1060 22 _ _ NNP 36297 1060 23 D D NNP 36297 1060 24 _ _ NNP 36297 1060 25 is be VBZ 36297 1060 26 approximately approximately RB 36297 1060 27 horizontal horizontal JJ 36297 1060 28 . . . 36297 1061 1 This this DT 36297 1061 2 is be VBZ 36297 1061 3 a a DT 36297 1061 4 simple simple JJ 36297 1061 5 and and CC 36297 1061 6 effective effective JJ 36297 1061 7 means mean NNS 36297 1061 8 of of IN 36297 1061 9 testing test VBG 36297 1061 10 the the DT 36297 1061 11 magnitude magnitude NN 36297 1061 12 of of IN 36297 1061 13 the the DT 36297 1061 14 illusion illusion NN 36297 1061 15 , , , 36297 1061 16 for for IN 36297 1061 17 it -PRON- PRP 36297 1061 18 is be VBZ 36297 1061 19 measured measure VBN 36297 1061 20 by by IN 36297 1061 21 the the DT 36297 1061 22 degree degree NN 36297 1061 23 of of IN 36297 1061 24 apparent apparent JJ 36297 1061 25 deviation deviation NN 36297 1061 26 between between IN 36297 1061 27 _ _ NNP 36297 1061 28 D D NNP 36297 1061 29 _ _ NNP 36297 1061 30 and and CC 36297 1061 31 the the DT 36297 1061 32 line line NN 36297 1061 33 drawn draw VBN 36297 1061 34 adjacent adjacent JJ 36297 1061 35 to to IN 36297 1061 36 it -PRON- PRP 36297 1061 37 , , , 36297 1061 38 which which WDT 36297 1061 39 the the DT 36297 1061 40 eye eye NN 36297 1061 41 will will MD 36297 1061 42 tolerate tolerate VB 36297 1061 43 . . . 36297 1062 1 Another another DT 36297 1062 2 method method NN 36297 1062 3 of of IN 36297 1062 4 obtaining obtain VBG 36297 1062 5 such such PDT 36297 1062 6 a a DT 36297 1062 7 measurement measurement NN 36297 1062 8 is be VBZ 36297 1062 9 to to TO 36297 1062 10 begin begin VB 36297 1062 11 with with IN 36297 1062 12 only only RB 36297 1062 13 the the DT 36297 1062 14 angle angle NN 36297 1062 15 and and CC 36297 1062 16 to to TO 36297 1062 17 draw draw VB 36297 1062 18 the the DT 36297 1062 19 apparent apparent JJ 36297 1062 20 continuation continuation NN 36297 1062 21 of of IN 36297 1062 22 one one CD 36297 1062 23 of of IN 36297 1062 24 its -PRON- PRP$ 36297 1062 25 lines line NNS 36297 1062 26 with with IN 36297 1062 27 a a DT 36297 1062 28 space space NN 36297 1062 29 intervening intervene VBG 36297 1062 30 . . . 36297 1063 1 This this DT 36297 1063 2 deviation deviation NN 36297 1063 3 from from IN 36297 1063 4 the the DT 36297 1063 5 true true JJ 36297 1063 6 continuation continuation NN 36297 1063 7 may may MD 36297 1063 8 then then RB 36297 1063 9 be be VB 36297 1063 10 readily readily RB 36297 1063 11 determined determine VBN 36297 1063 12 . . . 36297 1064 1 [ [ -LRB- 36297 1064 2 Illustration illustration NN 36297 1064 3 : : : 36297 1064 4 Fig Fig NNP 36297 1064 5 . . . 36297 1065 1 42 42 CD 36297 1065 2 . . . 36297 1066 1 The the DT 36297 1066 2 effect effect NN 36297 1066 3 of of IN 36297 1066 4 two two CD 36297 1066 5 angles angle NNS 36297 1066 6 in in IN 36297 1066 7 tilting tilt VBG 36297 1066 8 the the DT 36297 1066 9 horizontal horizontal JJ 36297 1066 10 lines line NNS 36297 1066 11 . . . 36297 1066 12 ] ] -RRB- 36297 1067 1 [ [ -LRB- 36297 1067 2 Illustration illustration NN 36297 1067 3 : : : 36297 1067 4 Fig Fig NNP 36297 1067 5 . . . 36297 1068 1 43 43 CD 36297 1068 2 . . . 36297 1069 1 The the DT 36297 1069 2 effect effect NN 36297 1069 3 of of IN 36297 1069 4 crossed cross VBN 36297 1069 5 lines line NNS 36297 1069 6 upon upon IN 36297 1069 7 their -PRON- PRP$ 36297 1069 8 respective respective JJ 36297 1069 9 apparent apparent JJ 36297 1069 10 directions direction NNS 36297 1069 11 . . . 36297 1069 12 ] ] -RRB- 36297 1070 1 A a DT 36297 1070 2 more more RBR 36297 1070 3 complex complex JJ 36297 1070 4 case case NN 36297 1070 5 is be VBZ 36297 1070 6 found find VBN 36297 1070 7 in in IN 36297 1070 8 Fig Fig NNP 36297 1070 9 . . . 36297 1071 1 43 43 CD 36297 1071 2 where where WRB 36297 1071 3 the the DT 36297 1071 4 effect effect NN 36297 1071 5 of of IN 36297 1071 6 an an DT 36297 1071 7 obtuse obtuse JJ 36297 1071 8 angle angle NN 36297 1071 9 _ _ NNP 36297 1071 10 ACD ACD NNP 36297 1071 11 _ _ NNP 36297 1071 12 is be VBZ 36297 1071 13 to to TO 36297 1071 14 make make VB 36297 1071 15 the the DT 36297 1071 16 continuation continuation NN 36297 1071 17 of of IN 36297 1071 18 _ _ NNP 36297 1071 19 AB AB NNP 36297 1071 20 _ _ NNP 36297 1071 21 apparently apparently RB 36297 1071 22 fall fall NN 36297 1071 23 below below IN 36297 1071 24 _ _ NNP 36297 1071 25 FG FG NNP 36297 1071 26 _ _ NNP 36297 1071 27 and and CC 36297 1071 28 the the DT 36297 1071 29 effect effect NN 36297 1071 30 of of IN 36297 1071 31 the the DT 36297 1071 32 acute acute JJ 36297 1071 33 angle angle NN 36297 1071 34 is be VBZ 36297 1071 35 the the DT 36297 1071 36 reverse reverse NN 36297 1071 37 . . . 36297 1072 1 However however RB 36297 1072 2 , , , 36297 1072 3 the the DT 36297 1072 4 net net JJ 36297 1072 5 result result NN 36297 1072 6 is be VBZ 36297 1072 7 that that IN 36297 1072 8 due due IN 36297 1072 9 to to IN 36297 1072 10 the the DT 36297 1072 11 preponderance preponderance NN 36297 1072 12 of of IN 36297 1072 13 the the DT 36297 1072 14 effect effect NN 36297 1072 15 of of IN 36297 1072 16 the the DT 36297 1072 17 larger large JJR 36297 1072 18 angle angle NN 36297 1072 19 over over IN 36297 1072 20 that that DT 36297 1072 21 of of IN 36297 1072 22 the the DT 36297 1072 23 smaller small JJR 36297 1072 24 . . . 36297 1073 1 The the DT 36297 1073 2 line line NN 36297 1073 3 _ _ NNP 36297 1073 4 EC EC NNP 36297 1073 5 _ _ NNP 36297 1073 6 adds add VBZ 36297 1073 7 nothing nothing NN 36297 1073 8 , , , 36297 1073 9 for for IN 36297 1073 10 it -PRON- PRP 36297 1073 11 merely merely RB 36297 1073 12 introduces introduce VBZ 36297 1073 13 two two CD 36297 1073 14 angles angle NNS 36297 1073 15 which which WDT 36297 1073 16 reinforce reinforce VBP 36297 1073 17 those those DT 36297 1073 18 above above IN 36297 1073 19 _ _ NNP 36297 1073 20 AB AB NNP 36297 1073 21 _ _ NNP 36297 1073 22 . . . 36297 1074 1 The the DT 36297 1074 2 line line NN 36297 1074 3 _ _ NNP 36297 1074 4 BC BC NNP 36297 1074 5 _ _ NNP 36297 1074 6 may may MD 36297 1074 7 be be VB 36297 1074 8 omitted omit VBN 36297 1074 9 or or CC 36297 1074 10 covered cover VBN 36297 1074 11 without without IN 36297 1074 12 appreciably appreciably RB 36297 1074 13 affecting affect VBG 36297 1074 14 the the DT 36297 1074 15 illusion illusion NN 36297 1074 16 . . . 36297 1075 1 [ [ -LRB- 36297 1075 2 Illustration illustration NN 36297 1075 3 : : : 36297 1075 4 Fig Fig NNP 36297 1075 5 . . . 36297 1076 1 44.--Another 44.--another CD 36297 1076 2 step step NN 36297 1076 3 toward toward IN 36297 1076 4 the the DT 36297 1076 5 Zöllner Zöllner NNP 36297 1076 6 illusion illusion NN 36297 1076 7 . . . 36297 1076 8 ] ] -RRB- 36297 1077 1 In in IN 36297 1077 2 Fig Fig NNP 36297 1077 3 . . . 36297 1078 1 44 44 CD 36297 1078 2 two two CD 36297 1078 3 obtuse obtuse JJ 36297 1078 4 angles angle NNS 36297 1078 5 are be VBP 36297 1078 6 arranged arrange VBN 36297 1078 7 so so IN 36297 1078 8 that that IN 36297 1078 9 their -PRON- PRP$ 36297 1078 10 effects effect NNS 36297 1078 11 are be VBP 36297 1078 12 additive additive JJ 36297 1078 13 , , , 36297 1078 14 with with IN 36297 1078 15 the the DT 36297 1078 16 result result NN 36297 1078 17 that that IN 36297 1078 18 the the DT 36297 1078 19 horizontal horizontal JJ 36297 1078 20 lines line NNS 36297 1078 21 apparently apparently RB 36297 1078 22 deviate deviate VBP 36297 1078 23 maximally maximally RB 36297 1078 24 for for IN 36297 1078 25 such such PDT 36297 1078 26 a a DT 36297 1078 27 simple simple JJ 36297 1078 28 case case NN 36297 1078 29 . . . 36297 1079 1 Thus thus RB 36297 1079 2 it -PRON- PRP 36297 1079 3 is be VBZ 36297 1079 4 seen see VBN 36297 1079 5 that that IN 36297 1079 6 the the DT 36297 1079 7 tendency tendency NN 36297 1079 8 of of IN 36297 1079 9 the the DT 36297 1079 10 sides side NNS 36297 1079 11 of of IN 36297 1079 12 an an DT 36297 1079 13 angle angle NN 36297 1079 14 to to TO 36297 1079 15 be be VB 36297 1079 16 apparently apparently RB 36297 1079 17 deviated deviate VBN 36297 1079 18 toward toward IN 36297 1079 19 the the DT 36297 1079 20 direction direction NN 36297 1079 21 of of IN 36297 1079 22 the the DT 36297 1079 23 angle angle NN 36297 1079 24 may may MD 36297 1079 25 result result VB 36297 1079 26 in in IN 36297 1079 27 an an DT 36297 1079 28 apparent apparent JJ 36297 1079 29 divergence divergence NN 36297 1079 30 from from IN 36297 1079 31 parallelism parallelism NN 36297 1079 32 as as RB 36297 1079 33 well well RB 36297 1079 34 as as IN 36297 1079 35 in in IN 36297 1079 36 making make VBG 36297 1079 37 continuous continuous JJ 36297 1079 38 lines line NNS 36297 1079 39 appear appear VBP 36297 1079 40 discontinuous discontinuous JJ 36297 1079 41 . . . 36297 1080 1 The the DT 36297 1080 2 illusion illusion NN 36297 1080 3 in in IN 36297 1080 4 Fig Fig NNP 36297 1080 5 . . . 36297 1081 1 44 44 CD 36297 1081 2 may may MD 36297 1081 3 be be VB 36297 1081 4 strengthened strengthen VBN 36297 1081 5 by by IN 36297 1081 6 adding add VBG 36297 1081 7 more more JJR 36297 1081 8 lines line NNS 36297 1081 9 parallel parallel JJ 36297 1081 10 to to IN 36297 1081 11 the the DT 36297 1081 12 oblique oblique JJ 36297 1081 13 lines line NNS 36297 1081 14 . . . 36297 1082 1 This this DT 36297 1082 2 is be VBZ 36297 1082 3 demonstrated demonstrate VBN 36297 1082 4 in in IN 36297 1082 5 Fig Fig NNP 36297 1082 6 . . . 36297 1083 1 38 38 CD 36297 1083 2 and and CC 36297 1083 3 in in IN 36297 1083 4 other other JJ 36297 1083 5 illustrations illustration NNS 36297 1083 6 . . . 36297 1084 1 In in IN 36297 1084 2 this this DT 36297 1084 3 manner manner NN 36297 1084 4 striking strike VBG 36297 1084 5 illusions illusion NNS 36297 1084 6 are be VBP 36297 1084 7 built build VBN 36297 1084 8 up up RP 36297 1084 9 . . . 36297 1085 1 [ [ -LRB- 36297 1085 2 Illustration illustration NN 36297 1085 3 : : : 36297 1085 4 Fig Fig NNP 36297 1085 5 . . . 36297 1086 1 45.--The 45.--the CD 36297 1086 2 two two CD 36297 1086 3 diagonals diagonal NNS 36297 1086 4 would would MD 36297 1086 5 meet meet VB 36297 1086 6 on on IN 36297 1086 7 the the DT 36297 1086 8 left left JJ 36297 1086 9 vertical vertical JJ 36297 1086 10 line line NN 36297 1086 11 . . . 36297 1086 12 ] ] -RRB- 36297 1087 1 [ [ -LRB- 36297 1087 2 Illustration illustration NN 36297 1087 3 : : : 36297 1087 4 Fig Fig NNP 36297 1087 5 . . . 36297 1088 1 46.--Poggendorff 46.--poggendorff LS 36297 1088 2 's 's POS 36297 1088 3 illusion illusion NN 36297 1088 4 . . . 36297 1089 1 Which which WDT 36297 1089 2 oblique oblique JJ 36297 1089 3 line line NN 36297 1089 4 on on IN 36297 1089 5 the the DT 36297 1089 6 right right NN 36297 1089 7 is be VBZ 36297 1089 8 the the DT 36297 1089 9 prolongation prolongation NN 36297 1089 10 of of IN 36297 1089 11 the the DT 36297 1089 12 oblique oblique JJ 36297 1089 13 line line NN 36297 1089 14 on on IN 36297 1089 15 the the DT 36297 1089 16 left left NN 36297 1089 17 ? ? . 36297 1089 18 ] ] -RRB- 36297 1090 1 If if IN 36297 1090 2 oblique oblique JJ 36297 1090 3 lines line NNS 36297 1090 4 are be VBP 36297 1090 5 extended extend VBN 36297 1090 6 across across IN 36297 1090 7 vertical vertical JJ 36297 1090 8 ones one NNS 36297 1090 9 , , , 36297 1090 10 as as IN 36297 1090 11 in in IN 36297 1090 12 Figs Figs NNP 36297 1090 13 . . . 36297 1091 1 45 45 CD 36297 1091 2 and and CC 36297 1091 3 46 46 CD 36297 1091 4 , , , 36297 1091 5 the the DT 36297 1091 6 illusion illusion NN 36297 1091 7 is be VBZ 36297 1091 8 seen see VBN 36297 1091 9 to to TO 36297 1091 10 be be VB 36297 1091 11 very very RB 36297 1091 12 striking striking JJ 36297 1091 13 . . . 36297 1092 1 In in IN 36297 1092 2 Fig Fig NNP 36297 1092 3 . . . 36297 1093 1 45 45 CD 36297 1093 2 the the DT 36297 1093 3 oblique oblique JJ 36297 1093 4 line line NN 36297 1093 5 on on IN 36297 1093 6 the the DT 36297 1093 7 right right NN 36297 1093 8 if if IN 36297 1093 9 extended extend VBN 36297 1093 10 would would MD 36297 1093 11 meet meet VB 36297 1093 12 the the DT 36297 1093 13 upper upper JJ 36297 1093 14 end end NN 36297 1093 15 of of IN 36297 1093 16 the the DT 36297 1093 17 oblique oblique JJ 36297 1093 18 line line NN 36297 1093 19 on on IN 36297 1093 20 the the DT 36297 1093 21 left left NN 36297 1093 22 ; ; : 36297 1093 23 however however RB 36297 1093 24 , , , 36297 1093 25 the the DT 36297 1093 26 apparent apparent JJ 36297 1093 27 point point NN 36297 1093 28 of of IN 36297 1093 29 intersection intersection NN 36297 1093 30 is be VBZ 36297 1093 31 somewhat somewhat RB 36297 1093 32 lower low JJR 36297 1093 33 than than IN 36297 1093 34 it -PRON- PRP 36297 1093 35 is be VBZ 36297 1093 36 in in IN 36297 1093 37 reality reality NN 36297 1093 38 . . . 36297 1094 1 In in IN 36297 1094 2 Fig Fig NNP 36297 1094 3 . . . 36297 1095 1 46 46 CD 36297 1095 2 the the DT 36297 1095 3 oblique oblique JJ 36297 1095 4 line line NN 36297 1095 5 on on IN 36297 1095 6 the the DT 36297 1095 7 left left NN 36297 1095 8 is be VBZ 36297 1095 9 in in IN 36297 1095 10 the the DT 36297 1095 11 same same JJ 36297 1095 12 straight straight JJ 36297 1095 13 line line NN 36297 1095 14 with with IN 36297 1095 15 the the DT 36297 1095 16 lower low JJR 36297 1095 17 oblique oblique JJ 36297 1095 18 line line NN 36297 1095 19 on on IN 36297 1095 20 the the DT 36297 1095 21 right right NN 36297 1095 22 . . . 36297 1096 1 The the DT 36297 1096 2 line line NN 36297 1096 3 drawn draw VBN 36297 1096 4 parallel parallel RB 36297 1096 5 to to IN 36297 1096 6 the the DT 36297 1096 7 latter latter JJ 36297 1096 8 furnishes furnishe NNS 36297 1096 9 an an DT 36297 1096 10 idea idea NN 36297 1096 11 of of IN 36297 1096 12 the the DT 36297 1096 13 extent extent NN 36297 1096 14 of of IN 36297 1096 15 the the DT 36297 1096 16 illusion illusion NN 36297 1096 17 . . . 36297 1097 1 This this DT 36297 1097 2 is be VBZ 36297 1097 3 the the DT 36297 1097 4 well well RB 36297 1097 5 - - HYPH 36297 1097 6 known know VBN 36297 1097 7 Poggendorff Poggendorff NNP 36297 1097 8 illusion illusion NN 36297 1097 9 . . . 36297 1098 1 The the DT 36297 1098 2 upper upper JJ 36297 1098 3 oblique oblique JJ 36297 1098 4 line line NN 36297 1098 5 on on IN 36297 1098 6 the the DT 36297 1098 7 right right NN 36297 1098 8 actually actually RB 36297 1098 9 appears appear VBZ 36297 1098 10 to to TO 36297 1098 11 be be VB 36297 1098 12 approximately approximately RB 36297 1098 13 the the DT 36297 1098 14 continuation continuation NN 36297 1098 15 of of IN 36297 1098 16 the the DT 36297 1098 17 upper upper JJ 36297 1098 18 oblique oblique JJ 36297 1098 19 line line NN 36297 1098 20 on on IN 36297 1098 21 the the DT 36297 1098 22 right right NN 36297 1098 23 . . . 36297 1099 1 The the DT 36297 1099 2 explanation explanation NN 36297 1099 3 of of IN 36297 1099 4 this this DT 36297 1099 5 illusion illusion NN 36297 1099 6 on on IN 36297 1099 7 the the DT 36297 1099 8 simple simple JJ 36297 1099 9 basis basis NN 36297 1099 10 of of IN 36297 1099 11 underestimation underestimation NN 36297 1099 12 or or CC 36297 1099 13 overestimation overestimation NN 36297 1099 14 of of IN 36297 1099 15 angles angle NNS 36297 1099 16 is be VBZ 36297 1099 17 open open JJ 36297 1099 18 to to IN 36297 1099 19 criticism criticism NN 36297 1099 20 . . . 36297 1100 1 If if IN 36297 1100 2 Fig Fig NNP 36297 1100 3 . . . 36297 1101 1 46 46 CD 36297 1101 2 is be VBZ 36297 1101 3 held hold VBN 36297 1101 4 so so IN 36297 1101 5 that that IN 36297 1101 6 the the DT 36297 1101 7 intercepted intercepted JJ 36297 1101 8 line line NN 36297 1101 9 is be VBZ 36297 1101 10 horizontal horizontal JJ 36297 1101 11 or or CC 36297 1101 12 vertical vertical JJ 36297 1101 13 , , , 36297 1101 14 the the DT 36297 1101 15 illusion illusion NN 36297 1101 16 disappears disappear VBZ 36297 1101 17 or or CC 36297 1101 18 at at IN 36297 1101 19 least least JJS 36297 1101 20 is be VBZ 36297 1101 21 greatly greatly RB 36297 1101 22 reduced reduce VBN 36297 1101 23 . . . 36297 1102 1 It -PRON- PRP 36297 1102 2 is be VBZ 36297 1102 3 difficult difficult JJ 36297 1102 4 to to TO 36297 1102 5 reconcile reconcile VB 36297 1102 6 this this DT 36297 1102 7 disappearance disappearance NN 36297 1102 8 of of IN 36297 1102 9 the the DT 36297 1102 10 illusion illusion NN 36297 1102 11 for for IN 36297 1102 12 certain certain JJ 36297 1102 13 positions position NNS 36297 1102 14 of of IN 36297 1102 15 the the DT 36297 1102 16 figure figure NN 36297 1102 17 with with IN 36297 1102 18 the the DT 36297 1102 19 theory theory NN 36297 1102 20 that that IN 36297 1102 21 the the DT 36297 1102 22 illusion illusion NN 36297 1102 23 is be VBZ 36297 1102 24 due due JJ 36297 1102 25 to to IN 36297 1102 26 an an DT 36297 1102 27 incorrect incorrect JJ 36297 1102 28 appraisal appraisal NN 36297 1102 29 of of IN 36297 1102 30 the the DT 36297 1102 31 angles angle NNS 36297 1102 32 . . . 36297 1103 1 [ [ -LRB- 36297 1103 2 Illustration illustration NN 36297 1103 3 : : : 36297 1103 4 Fig Fig NNP 36297 1103 5 . . . 36297 1104 1 47.--A 47.--a JJ 36297 1104 2 straight straight JJ 36297 1104 3 line line NN 36297 1104 4 appears appear VBZ 36297 1104 5 to to TO 36297 1104 6 sag sag VB 36297 1104 7 . . . 36297 1104 8 ] ] -RRB- 36297 1105 1 According accord VBG 36297 1105 2 to to IN 36297 1105 3 Judd,[2 Judd,[2 NNP 36297 1105 4 ] ] -RRB- 36297 1105 5 those those DT 36297 1105 6 portions portion NNS 36297 1105 7 of of IN 36297 1105 8 the the DT 36297 1105 9 parallels parallel NNS 36297 1105 10 lying lie VBG 36297 1105 11 on on IN 36297 1105 12 the the DT 36297 1105 13 obtuse obtuse JJ 36297 1105 14 - - HYPH 36297 1105 15 angle angle NN 36297 1105 16 side side NN 36297 1105 17 of of IN 36297 1105 18 the the DT 36297 1105 19 intercepted intercept VBN 36297 1105 20 line line NN 36297 1105 21 will will MD 36297 1105 22 be be VB 36297 1105 23 overestimated overestimate VBN 36297 1105 24 when when WRB 36297 1105 25 horizontal horizontal JJ 36297 1105 26 or or CC 36297 1105 27 vertical vertical JJ 36297 1105 28 distances distance NNS 36297 1105 29 along along IN 36297 1105 30 the the DT 36297 1105 31 parallel parallel JJ 36297 1105 32 lines line NNS 36297 1105 33 are be VBP 36297 1105 34 the the DT 36297 1105 35 subjects subject NNS 36297 1105 36 of of IN 36297 1105 37 attention attention NN 36297 1105 38 , , , 36297 1105 39 as as IN 36297 1105 40 they -PRON- PRP 36297 1105 41 are be VBP 36297 1105 42 in in IN 36297 1105 43 the the DT 36297 1105 44 usual usual JJ 36297 1105 45 positions position NNS 36297 1105 46 of of IN 36297 1105 47 the the DT 36297 1105 48 Poggendorff Poggendorff NNP 36297 1105 49 figure figure NN 36297 1105 50 . . . 36297 1106 1 He -PRON- PRP 36297 1106 2 holds hold VBZ 36297 1106 3 further further RB 36297 1106 4 that that IN 36297 1106 5 the the DT 36297 1106 6 overestimation overestimation NN 36297 1106 7 of of IN 36297 1106 8 this this DT 36297 1106 9 distance distance NN 36297 1106 10 along along IN 36297 1106 11 the the DT 36297 1106 12 parallels parallel NNS 36297 1106 13 ( ( -LRB- 36297 1106 14 the the DT 36297 1106 15 two two CD 36297 1106 16 vertical vertical JJ 36297 1106 17 lines line NNS 36297 1106 18 ) ) -RRB- 36297 1106 19 and and CC 36297 1106 20 the the DT 36297 1106 21 underestimation underestimation NN 36297 1106 22 of of IN 36297 1106 23 the the DT 36297 1106 24 oblique oblique JJ 36297 1106 25 distance distance NN 36297 1106 26 across across IN 36297 1106 27 the the DT 36297 1106 28 interval interval NN 36297 1106 29 are be VBP 36297 1106 30 sufficient sufficient JJ 36297 1106 31 to to TO 36297 1106 32 provide provide VB 36297 1106 33 a a DT 36297 1106 34 full full JJ 36297 1106 35 explanation explanation NN 36297 1106 36 of of IN 36297 1106 37 the the DT 36297 1106 38 illusion illusion NN 36297 1106 39 . . . 36297 1107 1 The the DT 36297 1107 2 disappearance disappearance NN 36297 1107 3 and and CC 36297 1107 4 appearance appearance NN 36297 1107 5 of of IN 36297 1107 6 the the DT 36297 1107 7 illusion illusion NN 36297 1107 8 , , , 36297 1107 9 as as IN 36297 1107 10 the the DT 36297 1107 11 position position NN 36297 1107 12 of of IN 36297 1107 13 the the DT 36297 1107 14 figure figure NN 36297 1107 15 is be VBZ 36297 1107 16 varied varied JJ 36297 1107 17 appears appear VBZ 36297 1107 18 to to TO 36297 1107 19 demonstrate demonstrate VB 36297 1107 20 the the DT 36297 1107 21 fact fact NN 36297 1107 22 that that IN 36297 1107 23 lines line NNS 36297 1107 24 produce produce VBP 36297 1107 25 illusions illusion NNS 36297 1107 26 only only RB 36297 1107 27 when when WRB 36297 1107 28 they -PRON- PRP 36297 1107 29 have have VBP 36297 1107 30 a a DT 36297 1107 31 direct direct JJ 36297 1107 32 influence influence NN 36297 1107 33 on on IN 36297 1107 34 the the DT 36297 1107 35 direction direction NN 36297 1107 36 in in IN 36297 1107 37 which which WDT 36297 1107 38 the the DT 36297 1107 39 attention attention NN 36297 1107 40 is be VBZ 36297 1107 41 turned turn VBN 36297 1107 42 . . . 36297 1108 1 That that RB 36297 1108 2 is is RB 36297 1108 3 , , , 36297 1108 4 when when WRB 36297 1108 5 this this DT 36297 1108 6 Poggendorff Poggendorff NNP 36297 1108 7 figure figure NN 36297 1108 8 is be VBZ 36297 1108 9 in in IN 36297 1108 10 such such PDT 36297 1108 11 a a DT 36297 1108 12 position position NN 36297 1108 13 that that IN 36297 1108 14 the the DT 36297 1108 15 intercepted intercepted JJ 36297 1108 16 line line NN 36297 1108 17 is be VBZ 36297 1108 18 horizontal horizontal JJ 36297 1108 19 , , , 36297 1108 20 the the DT 36297 1108 21 incorrect incorrect JJ 36297 1108 22 estimation estimation NN 36297 1108 23 of of IN 36297 1108 24 distance distance NN 36297 1108 25 along along IN 36297 1108 26 the the DT 36297 1108 27 parallels parallel NNS 36297 1108 28 has have VBZ 36297 1108 29 no no DT 36297 1108 30 direct direct JJ 36297 1108 31 bearing bearing NN 36297 1108 32 on on IN 36297 1108 33 the the DT 36297 1108 34 distance distance NN 36297 1108 35 to to TO 36297 1108 36 which which WDT 36297 1108 37 the the DT 36297 1108 38 attention attention NN 36297 1108 39 is be VBZ 36297 1108 40 directed direct VBN 36297 1108 41 . . . 36297 1109 1 In in IN 36297 1109 2 this this DT 36297 1109 3 case case NN 36297 1109 4 Judd Judd NNP 36297 1109 5 holds hold VBZ 36297 1109 6 that that IN 36297 1109 7 the the DT 36297 1109 8 entire entire JJ 36297 1109 9 influence influence NN 36297 1109 10 of of IN 36297 1109 11 the the DT 36297 1109 12 parallels parallel NNS 36297 1109 13 is be VBZ 36297 1109 14 absorbed absorb VBN 36297 1109 15 in in IN 36297 1109 16 aiding aid VBG 36297 1109 17 the the DT 36297 1109 18 intercepted intercepted JJ 36297 1109 19 line line NN 36297 1109 20 in in IN 36297 1109 21 carrying carry VBG 36297 1109 22 the the DT 36297 1109 23 eye eye NN 36297 1109 24 across across IN 36297 1109 25 the the DT 36297 1109 26 interval interval NN 36297 1109 27 . . . 36297 1110 1 For for IN 36297 1110 2 a a DT 36297 1110 3 detailed detailed JJ 36297 1110 4 account account NN 36297 1110 5 the the DT 36297 1110 6 reader reader NN 36297 1110 7 is be VBZ 36297 1110 8 referred refer VBN 36297 1110 9 to to IN 36297 1110 10 the the DT 36297 1110 11 original original JJ 36297 1110 12 paper paper NN 36297 1110 13 . . . 36297 1111 1 Some some DT 36297 1111 2 other other JJ 36297 1111 3 illusions illusion NNS 36297 1111 4 are be VBP 36297 1111 5 now now RB 36297 1111 6 presented present VBN 36297 1111 7 to to TO 36297 1111 8 demonstrate demonstrate VB 36297 1111 9 further further RB 36297 1111 10 the the DT 36297 1111 11 effect effect NN 36297 1111 12 of of IN 36297 1111 13 the the DT 36297 1111 14 presence presence NN 36297 1111 15 of of IN 36297 1111 16 angles angle NNS 36297 1111 17 . . . 36297 1112 1 Doubtless doubtless RB 36297 1112 2 , , , 36297 1112 3 in in IN 36297 1112 4 some some DT 36297 1112 5 of of IN 36297 1112 6 these these DT 36297 1112 7 , , , 36297 1112 8 other other JJ 36297 1112 9 causes cause NNS 36297 1112 10 contribute contribute VBP 36297 1112 11 more more RBR 36297 1112 12 or or CC 36297 1112 13 less less JJR 36297 1112 14 to to IN 36297 1112 15 the the DT 36297 1112 16 total total JJ 36297 1112 17 result result NN 36297 1112 18 . . . 36297 1113 1 In in IN 36297 1113 2 Fig Fig NNP 36297 1113 3 . . . 36297 1114 1 47 47 CD 36297 1114 2 a a DT 36297 1114 3 series series NN 36297 1114 4 of of IN 36297 1114 5 concentric concentric NN 36297 1114 6 arcs arc NNS 36297 1114 7 of of IN 36297 1114 8 circles circle NNS 36297 1114 9 end end VBP 36297 1114 10 in in IN 36297 1114 11 a a DT 36297 1114 12 straight straight JJ 36297 1114 13 line line NN 36297 1114 14 . . . 36297 1115 1 The the DT 36297 1115 2 result result NN 36297 1115 3 is be VBZ 36297 1115 4 that that IN 36297 1115 5 the the DT 36297 1115 6 straight straight JJ 36297 1115 7 line line NN 36297 1115 8 appears appear VBZ 36297 1115 9 to to TO 36297 1115 10 sag sag VB 36297 1115 11 perceptibly perceptibly RB 36297 1115 12 . . . 36297 1116 1 Incidentally incidentally RB 36297 1116 2 , , , 36297 1116 3 it -PRON- PRP 36297 1116 4 may may MD 36297 1116 5 be be VB 36297 1116 6 interesting interesting JJ 36297 1116 7 for for IN 36297 1116 8 the the DT 36297 1116 9 reader reader NN 36297 1116 10 to to TO 36297 1116 11 ascertain ascertain VB 36297 1116 12 whether whether IN 36297 1116 13 or or CC 36297 1116 14 not not RB 36297 1116 15 there there EX 36297 1116 16 is be VBZ 36297 1116 17 any any DT 36297 1116 18 doubt doubt NN 36297 1116 19 in in IN 36297 1116 20 his -PRON- PRP$ 36297 1116 21 mind mind NN 36297 1116 22 as as IN 36297 1116 23 to to IN 36297 1116 24 the the DT 36297 1116 25 arcs arc NNS 36297 1116 26 appearing appear VBG 36297 1116 27 to to TO 36297 1116 28 belong belong VB 36297 1116 29 to to IN 36297 1116 30 circles circle NNS 36297 1116 31 . . . 36297 1117 1 To to IN 36297 1117 2 the the DT 36297 1117 3 author author NN 36297 1117 4 the the DT 36297 1117 5 arcs arc NNS 36297 1117 6 appear appear VBP 36297 1117 7 distorted distort VBN 36297 1117 8 from from IN 36297 1117 9 those those DT 36297 1117 10 of of IN 36297 1117 11 true true JJ 36297 1117 12 circles circle NNS 36297 1117 13 . . . 36297 1118 1 [ [ -LRB- 36297 1118 2 Illustration illustration NN 36297 1118 3 : : : 36297 1118 4 Fig Fig NNP 36297 1118 5 . . . 36297 1119 1 48.--Distortions 48.--distortions CD 36297 1119 2 of of IN 36297 1119 3 contour contour NN 36297 1119 4 due due IN 36297 1119 5 to to IN 36297 1119 6 contact contact NN 36297 1119 7 with with IN 36297 1119 8 other other JJ 36297 1119 9 contours contour NNS 36297 1119 10 . . . 36297 1119 11 ] ] -RRB- 36297 1120 1 In in IN 36297 1120 2 Fig Fig NNP 36297 1120 3 . . . 36297 1121 1 48 48 CD 36297 1121 2 the the DT 36297 1121 3 bounding bound VBG 36297 1121 4 figure figure NN 36297 1121 5 is be VBZ 36297 1121 6 a a DT 36297 1121 7 true true JJ 36297 1121 8 circle circle NN 36297 1121 9 but but CC 36297 1121 10 it -PRON- PRP 36297 1121 11 appears appear VBZ 36297 1121 12 to to TO 36297 1121 13 be be VB 36297 1121 14 distorted distort VBN 36297 1121 15 or or CC 36297 1121 16 dented dent VBN 36297 1121 17 inward inward RB 36297 1121 18 where where WRB 36297 1121 19 the the DT 36297 1121 20 angles angle NNS 36297 1121 21 of of IN 36297 1121 22 the the DT 36297 1121 23 hexagon hexagon NNP 36297 1121 24 meet meet VB 36297 1121 25 it -PRON- PRP 36297 1121 26 . . . 36297 1122 1 Similarly similarly RB 36297 1122 2 , , , 36297 1122 3 the the DT 36297 1122 4 sides side NNS 36297 1122 5 of of IN 36297 1122 6 the the DT 36297 1122 7 hexagon hexagon NNP 36297 1122 8 appear appear VBP 36297 1122 9 to to TO 36297 1122 10 sag sag VB 36297 1122 11 inward inward RB 36297 1122 12 where where WRB 36297 1122 13 the the DT 36297 1122 14 corners corner NNS 36297 1122 15 of of IN 36297 1122 16 the the DT 36297 1122 17 rectangle rectangle NNP 36297 1122 18 meet meet VBP 36297 1122 19 them -PRON- PRP 36297 1122 20 . . . 36297 1123 1 The the DT 36297 1123 2 influences influence NNS 36297 1123 3 which which WDT 36297 1123 4 have have VBP 36297 1123 5 been be VBN 36297 1123 6 emphasized emphasize VBN 36297 1123 7 apparently apparently RB 36297 1123 8 are be VBP 36297 1123 9 responsible responsible JJ 36297 1123 10 for for IN 36297 1123 11 the the DT 36297 1123 12 illusions illusion NNS 36297 1123 13 in in IN 36297 1123 14 Figs Figs NNP 36297 1123 15 . . . 36297 1124 1 49 49 CD 36297 1124 2 , , , 36297 1124 3 50 50 CD 36297 1124 4 and and CC 36297 1124 5 51 51 CD 36297 1124 6 . . . 36297 1125 1 It -PRON- PRP 36297 1125 2 is be VBZ 36297 1125 3 interesting interesting JJ 36297 1125 4 to to TO 36297 1125 5 note note VB 36297 1125 6 the the DT 36297 1125 7 disappearance disappearance NN 36297 1125 8 of of IN 36297 1125 9 the the DT 36297 1125 10 illusion illusion NN 36297 1125 11 , , , 36297 1125 12 as as IN 36297 1125 13 the the DT 36297 1125 14 plane plane NN 36297 1125 15 of of IN 36297 1125 16 Fig Fig NNP 36297 1125 17 . . . 36297 1126 1 49 49 CD 36297 1126 2 is be VBZ 36297 1126 3 varied varied JJ 36297 1126 4 from from IN 36297 1126 5 vertical vertical JJ 36297 1126 6 toward toward IN 36297 1126 7 the the DT 36297 1126 8 horizontal horizontal NN 36297 1126 9 . . . 36297 1127 1 That that RB 36297 1127 2 is is RB 36297 1127 3 , , , 36297 1127 4 it -PRON- PRP 36297 1127 5 is be VBZ 36297 1127 6 very very RB 36297 1127 7 apparent apparent JJ 36297 1127 8 when when WRB 36297 1127 9 viewed view VBN 36297 1127 10 perpendicularly perpendicularly RB 36297 1127 11 to to IN 36297 1127 12 the the DT 36297 1127 13 plane plane NN 36297 1127 14 of of IN 36297 1127 15 the the DT 36297 1127 16 page page NN 36297 1127 17 , , , 36297 1127 18 the the DT 36297 1127 19 latter latter JJ 36297 1127 20 being be VBG 36297 1127 21 held hold VBN 36297 1127 22 vertically vertically RB 36297 1127 23 , , , 36297 1127 24 but but CC 36297 1127 25 as as IN 36297 1127 26 the the DT 36297 1127 27 page page NN 36297 1127 28 is be VBZ 36297 1127 29 tilted tilt VBN 36297 1127 30 backward backward RB 36297 1127 31 the the DT 36297 1127 32 illusion illusion NN 36297 1127 33 decreases decrease VBZ 36297 1127 34 and and CC 36297 1127 35 finally finally RB 36297 1127 36 disappears disappear VBZ 36297 1127 37 . . . 36297 1128 1 [ [ -LRB- 36297 1128 2 Illustration illustration NN 36297 1128 3 : : : 36297 1128 4 Fig Fig NNP 36297 1128 5 . . . 36297 1129 1 49.--An 49.--an CD 36297 1129 2 illusion illusion NN 36297 1129 3 of of IN 36297 1129 4 direction direction NN 36297 1129 5 . . . 36297 1129 6 ] ] -RRB- 36297 1130 1 [ [ -LRB- 36297 1130 2 Illustration illustration NN 36297 1130 3 : : : 36297 1130 4 Fig Fig NNP 36297 1130 5 . . . 36297 1131 1 50.--"Twisted 50.--"twisted CD 36297 1131 2 - - HYPH 36297 1131 3 cord cord NN 36297 1131 4 " " '' 36297 1131 5 illusion illusion NN 36297 1131 6 . . . 36297 1132 1 These these DT 36297 1132 2 are be VBP 36297 1132 3 straight straight JJ 36297 1132 4 cords cord NNS 36297 1132 5 . . . 36297 1132 6 ] ] -RRB- 36297 1133 1 [ [ -LRB- 36297 1133 2 Illustration illustration NN 36297 1133 3 : : : 36297 1133 4 Fig Fig NNP 36297 1133 5 . . . 36297 1134 1 51.--"Twisted 51.--"twiste VBN 36297 1134 2 - - HYPH 36297 1134 3 cord cord NN 36297 1134 4 " " '' 36297 1134 5 illusion illusion NN 36297 1134 6 . . . 36297 1135 1 These these DT 36297 1135 2 are be VBP 36297 1135 3 concentric concentric JJ 36297 1135 4 circles circle NNS 36297 1135 5 . . . 36297 1135 6 ] ] -RRB- 36297 1136 1 The the DT 36297 1136 2 illusions illusion NNS 36297 1136 3 in in IN 36297 1136 4 Figs Figs NNP 36297 1136 5 . . . 36297 1137 1 50 50 CD 36297 1137 2 and and CC 36297 1137 3 51 51 CD 36297 1137 4 are be VBP 36297 1137 5 commonly commonly RB 36297 1137 6 termed term VBN 36297 1137 7 " " `` 36297 1137 8 twisted twisted JJ 36297 1137 9 cord cord NN 36297 1137 10 " " '' 36297 1137 11 effects effect NNS 36297 1137 12 . . . 36297 1138 1 A a DT 36297 1138 2 cord cord NN 36297 1138 3 may may MD 36297 1138 4 be be VB 36297 1138 5 made make VBN 36297 1138 6 by by IN 36297 1138 7 twisting twist VBG 36297 1138 8 two two CD 36297 1138 9 strands strand NNS 36297 1138 10 which which WDT 36297 1138 11 are be VBP 36297 1138 12 white white JJ 36297 1138 13 and and CC 36297 1138 14 black black JJ 36297 1138 15 ( ( -LRB- 36297 1138 16 or or CC 36297 1138 17 any any DT 36297 1138 18 dark dark JJ 36297 1138 19 color color NN 36297 1138 20 ) ) -RRB- 36297 1138 21 respectively respectively RB 36297 1138 22 . . . 36297 1139 1 This this DT 36297 1139 2 may may MD 36297 1139 3 be be VB 36297 1139 4 superposed superpose VBN 36297 1139 5 upon upon IN 36297 1139 6 various various JJ 36297 1139 7 backgrounds background NNS 36297 1139 8 with with IN 36297 1139 9 striking strike VBG 36297 1139 10 results result NNS 36297 1139 11 . . . 36297 1140 1 In in IN 36297 1140 2 Fig Fig NNP 36297 1140 3 . . . 36297 1141 1 50 50 CD 36297 1141 2 the the DT 36297 1141 3 straight straight JJ 36297 1141 4 " " `` 36297 1141 5 cords cord NNS 36297 1141 6 " " '' 36297 1141 7 appear appear VBP 36297 1141 8 bent bent JJ 36297 1141 9 in in IN 36297 1141 10 the the DT 36297 1141 11 middle middle NN 36297 1141 12 , , , 36297 1141 13 owing owe VBG 36297 1141 14 to to IN 36297 1141 15 a a DT 36297 1141 16 reversal reversal NN 36297 1141 17 of of IN 36297 1141 18 the the DT 36297 1141 19 " " `` 36297 1141 20 twist twist NN 36297 1141 21 . . . 36297 1141 22 " " '' 36297 1142 1 Such such PDT 36297 1142 2 a a DT 36297 1142 3 figure figure NN 36297 1142 4 may may MD 36297 1142 5 be be VB 36297 1142 6 easily easily RB 36297 1142 7 made make VBN 36297 1142 8 by by IN 36297 1142 9 using use VBG 36297 1142 10 cord cord NN 36297 1142 11 and and CC 36297 1142 12 a a DT 36297 1142 13 checkered checkered JJ 36297 1142 14 cloth cloth NN 36297 1142 15 . . . 36297 1143 1 In in IN 36297 1143 2 Fig Fig NNP 36297 1143 3 . . . 36297 1144 1 51 51 CD 36297 1144 2 it -PRON- PRP 36297 1144 3 is be VBZ 36297 1144 4 difficult difficult JJ 36297 1144 5 to to TO 36297 1144 6 convince convince VB 36297 1144 7 the the DT 36297 1144 8 intellect intellect NN 36297 1144 9 that that WDT 36297 1144 10 the the DT 36297 1144 11 " " `` 36297 1144 12 cords cord NNS 36297 1144 13 " " '' 36297 1144 14 are be VBP 36297 1144 15 not not RB 36297 1144 16 arranged arrange VBN 36297 1144 17 in in IN 36297 1144 18 the the DT 36297 1144 19 form form NN 36297 1144 20 of of IN 36297 1144 21 concentric concentric JJ 36297 1144 22 circles circle NNS 36297 1144 23 , , , 36297 1144 24 but but CC 36297 1144 25 this this DT 36297 1144 26 becomes become VBZ 36297 1144 27 evident evident JJ 36297 1144 28 when when WRB 36297 1144 29 one one CD 36297 1144 30 of of IN 36297 1144 31 them -PRON- PRP 36297 1144 32 is be VBZ 36297 1144 33 traced trace VBN 36297 1144 34 out out RP 36297 1144 35 . . . 36297 1145 1 The the DT 36297 1145 2 influence influence NN 36297 1145 3 of of IN 36297 1145 4 the the DT 36297 1145 5 illusion illusion NN 36297 1145 6 is be VBZ 36297 1145 7 so so RB 36297 1145 8 powerful powerful JJ 36297 1145 9 that that IN 36297 1145 10 it -PRON- PRP 36297 1145 11 is be VBZ 36297 1145 12 even even RB 36297 1145 13 difficult difficult JJ 36297 1145 14 to to TO 36297 1145 15 follow follow VB 36297 1145 16 one one CD 36297 1145 17 of of IN 36297 1145 18 the the DT 36297 1145 19 circles circle NNS 36297 1145 20 with with IN 36297 1145 21 the the DT 36297 1145 22 point point NN 36297 1145 23 of of IN 36297 1145 24 a a DT 36297 1145 25 pencil pencil NN 36297 1145 26 around around IN 36297 1145 27 its -PRON- PRP$ 36297 1145 28 entire entire JJ 36297 1145 29 circumference circumference NN 36297 1145 30 . . . 36297 1146 1 The the DT 36297 1146 2 cord cord NN 36297 1146 3 appears appear VBZ 36297 1146 4 to to TO 36297 1146 5 form form VB 36297 1146 6 a a DT 36297 1146 7 spiral spiral NN 36297 1146 8 or or CC 36297 1146 9 a a DT 36297 1146 10 helix helix NN 36297 1146 11 seen see VBN 36297 1146 12 in in IN 36297 1146 13 perspective perspective NN 36297 1146 14 . . . 36297 1147 1 [ [ -LRB- 36297 1147 2 Illustration illustration NN 36297 1147 3 : : : 36297 1147 4 Fig Fig NNP 36297 1147 5 . . . 36297 1148 1 52.--A 52.--a JJ 36297 1148 2 spiral spiral NN 36297 1148 3 when when WRB 36297 1148 4 rotated rotate VBD 36297 1148 5 appears appear VBZ 36297 1148 6 to to TO 36297 1148 7 expand expand VB 36297 1148 8 or or CC 36297 1148 9 contract contract VB 36297 1148 10 , , , 36297 1148 11 depending depend VBG 36297 1148 12 upon upon IN 36297 1148 13 direction direction NN 36297 1148 14 of of IN 36297 1148 15 rotation rotation NN 36297 1148 16 . . . 36297 1148 17 ] ] -RRB- 36297 1149 1 A a DT 36297 1149 2 striking striking JJ 36297 1149 3 illusion illusion NN 36297 1149 4 is be VBZ 36297 1149 5 obtained obtain VBN 36297 1149 6 by by IN 36297 1149 7 revolving revolve VBG 36297 1149 8 the the DT 36297 1149 9 spiral spiral JJ 36297 1149 10 shown show VBN 36297 1149 11 in in IN 36297 1149 12 Fig Fig NNP 36297 1149 13 . . . 36297 1150 1 52 52 CD 36297 1150 2 about about IN 36297 1150 3 its -PRON- PRP$ 36297 1150 4 center center NN 36297 1150 5 . . . 36297 1151 1 This this DT 36297 1151 2 may may MD 36297 1151 3 be be VB 36297 1151 4 considered consider VBN 36297 1151 5 as as IN 36297 1151 6 an an DT 36297 1151 7 effect effect NN 36297 1151 8 of of IN 36297 1151 9 angles angle NNS 36297 1151 10 because because IN 36297 1151 11 the the DT 36297 1151 12 curvature curvature JJ 36297 1151 13 and and CC 36297 1151 14 consequently consequently RB 36297 1151 15 the the DT 36297 1151 16 angle angle NN 36297 1151 17 of of IN 36297 1151 18 the the DT 36297 1151 19 spiral spiral NN 36297 1151 20 is be VBZ 36297 1151 21 continually continually RB 36297 1151 22 changing change VBG 36297 1151 23 . . . 36297 1152 1 There there EX 36297 1152 2 is be VBZ 36297 1152 3 a a DT 36297 1152 4 peculiar peculiar JJ 36297 1152 5 movement movement NN 36297 1152 6 or or CC 36297 1152 7 progression progression NN 36297 1152 8 toward toward IN 36297 1152 9 the the DT 36297 1152 10 center center NN 36297 1152 11 when when WRB 36297 1152 12 revolved revolve VBD 36297 1152 13 in in IN 36297 1152 14 one one CD 36297 1152 15 direction direction NN 36297 1152 16 . . . 36297 1153 1 When when WRB 36297 1153 2 the the DT 36297 1153 3 direction direction NN 36297 1153 4 of of IN 36297 1153 5 rotation rotation NN 36297 1153 6 is be VBZ 36297 1153 7 reversed reverse VBN 36297 1153 8 the the DT 36297 1153 9 movement movement NN 36297 1153 10 is be VBZ 36297 1153 11 toward toward IN 36297 1153 12 the the DT 36297 1153 13 exterior exterior NN 36297 1153 14 of of IN 36297 1153 15 the the DT 36297 1153 16 figure figure NN 36297 1153 17 ; ; : 36297 1153 18 that that RB 36297 1153 19 is is RB 36297 1153 20 , , , 36297 1153 21 there there EX 36297 1153 22 is be VBZ 36297 1153 23 a a DT 36297 1153 24 seeming seeming JJ 36297 1153 25 expansion expansion NN 36297 1153 26 . . . 36297 1154 1 Angles angle NNS 36297 1154 2 appear appear VBP 36297 1154 3 to to TO 36297 1154 4 modify modify VB 36297 1154 5 our -PRON- PRP$ 36297 1154 6 judgments judgment NNS 36297 1154 7 of of IN 36297 1154 8 the the DT 36297 1154 9 length length NN 36297 1154 10 of of IN 36297 1154 11 lines line NNS 36297 1154 12 as as RB 36297 1154 13 well well RB 36297 1154 14 as as IN 36297 1154 15 of of IN 36297 1154 16 their -PRON- PRP$ 36297 1154 17 direction direction NN 36297 1154 18 . . . 36297 1155 1 Of of RB 36297 1155 2 course course RB 36297 1155 3 , , , 36297 1155 4 it -PRON- PRP 36297 1155 5 must must MD 36297 1155 6 be be VB 36297 1155 7 admitted admit VBN 36297 1155 8 that that IN 36297 1155 9 some some DT 36297 1155 10 of of IN 36297 1155 11 these these DT 36297 1155 12 illusions illusion NNS 36297 1155 13 might may MD 36297 1155 14 be be VB 36297 1155 15 classified classify VBN 36297 1155 16 under under IN 36297 1155 17 those those DT 36297 1155 18 of of IN 36297 1155 19 " " `` 36297 1155 20 contrast contrast NN 36297 1155 21 " " '' 36297 1155 22 and and CC 36297 1155 23 others other NNS 36297 1155 24 . . . 36297 1156 1 In in IN 36297 1156 2 fact fact NN 36297 1156 3 , , , 36297 1156 4 it -PRON- PRP 36297 1156 5 has have VBZ 36297 1156 6 been be VBN 36297 1156 7 stated state VBN 36297 1156 8 that that IN 36297 1156 9 classification classification NN 36297 1156 10 is be VBZ 36297 1156 11 difficult difficult JJ 36297 1156 12 but but CC 36297 1156 13 it -PRON- PRP 36297 1156 14 appears appear VBZ 36297 1156 15 logical logical JJ 36297 1156 16 to to TO 36297 1156 17 discuss discuss VB 36297 1156 18 the the DT 36297 1156 19 effect effect NN 36297 1156 20 of of IN 36297 1156 21 angles angle NNS 36297 1156 22 in in IN 36297 1156 23 this this DT 36297 1156 24 chapter chapter NN 36297 1156 25 apart apart RB 36297 1156 26 from from IN 36297 1156 27 the the DT 36297 1156 28 divisions division NNS 36297 1156 29 presented present VBN 36297 1156 30 in in IN 36297 1156 31 the the DT 36297 1156 32 preceding precede VBG 36297 1156 33 chapters chapter NNS 36297 1156 34 . . . 36297 1157 1 This this DT 36297 1157 2 decision decision NN 36297 1157 3 was be VBD 36297 1157 4 reached reach VBN 36297 1157 5 because because IN 36297 1157 6 the the DT 36297 1157 7 effect effect NN 36297 1157 8 of of IN 36297 1157 9 angles angle NNS 36297 1157 10 could could MD 36297 1157 11 be be VB 36297 1157 12 seen see VBN 36297 1157 13 in in IN 36297 1157 14 many many JJ 36297 1157 15 of of IN 36297 1157 16 the the DT 36297 1157 17 illusions illusion NNS 36297 1157 18 which which WDT 36297 1157 19 would would MD 36297 1157 20 more more RBR 36297 1157 21 logically logically RB 36297 1157 22 be be VB 36297 1157 23 grouped group VBN 36297 1157 24 under under IN 36297 1157 25 the the DT 36297 1157 26 classification classification NN 36297 1157 27 presented present VBN 36297 1157 28 in in IN 36297 1157 29 the the DT 36297 1157 30 preceding precede VBG 36297 1157 31 chapters chapter NNS 36297 1157 32 . . . 36297 1158 1 [ [ -LRB- 36297 1158 2 Illustration illustration NN 36297 1158 3 : : : 36297 1158 4 Fig Fig NNP 36297 1158 5 . . . 36297 1159 1 53.--Angles 53.--angles CD 36297 1159 2 affect affect VBP 36297 1159 3 the the DT 36297 1159 4 apparent apparent JJ 36297 1159 5 length length NN 36297 1159 6 of of IN 36297 1159 7 lines line NNS 36297 1159 8 . . . 36297 1159 9 ] ] -RRB- 36297 1160 1 In in IN 36297 1160 2 Fig Fig NNP 36297 1160 3 . . . 36297 1161 1 53 53 CD 36297 1161 2 the the DT 36297 1161 3 three three CD 36297 1161 4 horizontal horizontal JJ 36297 1161 5 lines line NNS 36297 1161 6 are be VBP 36297 1161 7 of of IN 36297 1161 8 equal equal JJ 36297 1161 9 length length NN 36297 1161 10 but but CC 36297 1161 11 they -PRON- PRP 36297 1161 12 appear appear VBP 36297 1161 13 unequal unequal JJ 36297 1161 14 . . . 36297 1162 1 This this DT 36297 1162 2 must must MD 36297 1162 3 be be VB 36297 1162 4 due due JJ 36297 1162 5 primarily primarily RB 36297 1162 6 to to IN 36297 1162 7 the the DT 36297 1162 8 size size NN 36297 1162 9 of of IN 36297 1162 10 the the DT 36297 1162 11 angles angle NNS 36297 1162 12 made make VBN 36297 1162 13 by by IN 36297 1162 14 the the DT 36297 1162 15 lines line NNS 36297 1162 16 at at IN 36297 1162 17 the the DT 36297 1162 18 ends end NNS 36297 1162 19 . . . 36297 1163 1 Within within IN 36297 1163 2 certain certain JJ 36297 1163 3 limits limit NNS 36297 1163 4 , , , 36297 1163 5 the the DT 36297 1163 6 greater great JJR 36297 1163 7 the the DT 36297 1163 8 angle angle NN 36297 1163 9 the the DT 36297 1163 10 greater great JJR 36297 1163 11 is be VBZ 36297 1163 12 the the DT 36297 1163 13 apparent apparent JJ 36297 1163 14 elongation elongation NN 36297 1163 15 of of IN 36297 1163 16 the the DT 36297 1163 17 central central JJ 36297 1163 18 horizontal horizontal JJ 36297 1163 19 portion portion NN 36297 1163 20 . . . 36297 1164 1 This this DT 36297 1164 2 generalization generalization NN 36297 1164 3 appears appear VBZ 36297 1164 4 to to TO 36297 1164 5 apply apply VB 36297 1164 6 even even RB 36297 1164 7 when when WRB 36297 1164 8 the the DT 36297 1164 9 angle angle NN 36297 1164 10 is be VBZ 36297 1164 11 less less JJR 36297 1164 12 than than IN 36297 1164 13 a a DT 36297 1164 14 right right JJ 36297 1164 15 angle angle NN 36297 1164 16 , , , 36297 1164 17 although although IN 36297 1164 18 there there EX 36297 1164 19 appears appear VBZ 36297 1164 20 to to TO 36297 1164 21 be be VB 36297 1164 22 less less JJR 36297 1164 23 strength strength NN 36297 1164 24 to to IN 36297 1164 25 the the DT 36297 1164 26 illusions illusion NNS 36297 1164 27 with with IN 36297 1164 28 these these DT 36297 1164 29 smaller small JJR 36297 1164 30 angles angle NNS 36297 1164 31 than than IN 36297 1164 32 with with IN 36297 1164 33 the the DT 36297 1164 34 larger large JJR 36297 1164 35 angles angle NNS 36297 1164 36 . . . 36297 1165 1 Other other JJ 36297 1165 2 factors factor NNS 36297 1165 3 which which WDT 36297 1165 4 contribute contribute VBP 36297 1165 5 to to IN 36297 1165 6 the the DT 36297 1165 7 extent extent NN 36297 1165 8 of of IN 36297 1165 9 the the DT 36297 1165 10 illusion illusion NN 36297 1165 11 are be VBP 36297 1165 12 the the DT 36297 1165 13 positions position NNS 36297 1165 14 of of IN 36297 1165 15 the the DT 36297 1165 16 figures figure NNS 36297 1165 17 , , , 36297 1165 18 the the DT 36297 1165 19 distance distance NN 36297 1165 20 between between IN 36297 1165 21 them -PRON- PRP 36297 1165 22 , , , 36297 1165 23 and and CC 36297 1165 24 the the DT 36297 1165 25 juxtaposition juxtaposition NN 36297 1165 26 of of IN 36297 1165 27 certain certain JJ 36297 1165 28 lines line NNS 36297 1165 29 . . . 36297 1166 1 The the DT 36297 1166 2 illusion illusion NN 36297 1166 3 still still RB 36297 1166 4 exists exist VBZ 36297 1166 5 if if IN 36297 1166 6 the the DT 36297 1166 7 horizontal horizontal JJ 36297 1166 8 lines line NNS 36297 1166 9 are be VBP 36297 1166 10 removed remove VBN 36297 1166 11 and and CC 36297 1166 12 also also RB 36297 1166 13 if if IN 36297 1166 14 the the DT 36297 1166 15 figures figure NNS 36297 1166 16 are be VBP 36297 1166 17 cut cut VBN 36297 1166 18 out out IN 36297 1166 19 of of IN 36297 1166 20 paper paper NN 36297 1166 21 after after IN 36297 1166 22 joining join VBG 36297 1166 23 the the DT 36297 1166 24 lower low JJR 36297 1166 25 ends end NNS 36297 1166 26 of of IN 36297 1166 27 the the DT 36297 1166 28 short short JJ 36297 1166 29 lines line NNS 36297 1166 30 in in IN 36297 1166 31 each each DT 36297 1166 32 case case NN 36297 1166 33 . . . 36297 1167 1 [ [ -LRB- 36297 1167 2 Illustration illustration NN 36297 1167 3 : : : 36297 1167 4 Fig Fig NNP 36297 1167 5 . . . 36297 1168 1 54.--The 54.--the CD 36297 1168 2 horizontal horizontal JJ 36297 1168 3 line line NN 36297 1168 4 appears appear VBZ 36297 1168 5 to to TO 36297 1168 6 tilt tilt VB 36297 1168 7 downward downward RB 36297 1168 8 toward toward IN 36297 1168 9 the the DT 36297 1168 10 ends end NNS 36297 1168 11 . . . 36297 1168 12 ] ] -RRB- 36297 1169 1 [ [ -LRB- 36297 1169 2 Illustration illustration NN 36297 1169 3 : : : 36297 1169 4 Fig Fig NNP 36297 1169 5 . . . 36297 1170 1 55.--The 55.--the CD 36297 1170 2 horizontal horizontal JJ 36297 1170 3 line line NN 36297 1170 4 appears appear VBZ 36297 1170 5 to to TO 36297 1170 6 sag sag VB 36297 1170 7 in in IN 36297 1170 8 the the DT 36297 1170 9 middle middle NN 36297 1170 10 . . . 36297 1170 11 ] ] -RRB- 36297 1171 1 In in IN 36297 1171 2 Fig Fig NNP 36297 1171 3 . . . 36297 1172 1 54 54 CD 36297 1172 2 the the DT 36297 1172 3 horizontal horizontal JJ 36297 1172 4 straight straight JJ 36297 1172 5 line line NN 36297 1172 6 appears appear VBZ 36297 1172 7 to to TO 36297 1172 8 consist consist VB 36297 1172 9 of of IN 36297 1172 10 two two CD 36297 1172 11 lines line NNS 36297 1172 12 tilting tilt VBG 36297 1172 13 slightly slightly RB 36297 1172 14 upward upward RB 36297 1172 15 toward toward IN 36297 1172 16 the the DT 36297 1172 17 center center NN 36297 1172 18 . . . 36297 1173 1 This this DT 36297 1173 2 will will MD 36297 1173 3 be be VB 36297 1173 4 seen see VBN 36297 1173 5 to to TO 36297 1173 6 be be VB 36297 1173 7 in in IN 36297 1173 8 agreement agreement NN 36297 1173 9 with with IN 36297 1173 10 the the DT 36297 1173 11 general general JJ 36297 1173 12 proposition proposition NN 36297 1173 13 that that WDT 36297 1173 14 the the DT 36297 1173 15 sides side NNS 36297 1173 16 of of IN 36297 1173 17 an an DT 36297 1173 18 angle angle NN 36297 1173 19 are be VBP 36297 1173 20 deviated deviate VBN 36297 1173 21 in in IN 36297 1173 22 the the DT 36297 1173 23 direction direction NN 36297 1173 24 of of IN 36297 1173 25 the the DT 36297 1173 26 angle angle NN 36297 1173 27 . . . 36297 1174 1 In in IN 36297 1174 2 this this DT 36297 1174 3 case case NN 36297 1174 4 it -PRON- PRP 36297 1174 5 should should MD 36297 1174 6 be be VB 36297 1174 7 noted note VBN 36297 1174 8 that that IN 36297 1174 9 one one CD 36297 1174 10 of of IN 36297 1174 11 the the DT 36297 1174 12 obtuse obtuse NN 36297 1174 13 angles angle NNS 36297 1174 14 to to TO 36297 1174 15 be be VB 36297 1174 16 considered consider VBN 36297 1174 17 is be VBZ 36297 1174 18 _ _ NNP 36297 1174 19 ABC ABC NNP 36297 1174 20 _ _ NNP 36297 1174 21 and and CC 36297 1174 22 that that IN 36297 1174 23 the the DT 36297 1174 24 effect effect NN 36297 1174 25 of of IN 36297 1174 26 this this DT 36297 1174 27 is be VBZ 36297 1174 28 to to TO 36297 1174 29 tilt tilt VB 36297 1174 30 the the DT 36297 1174 31 line line NN 36297 1174 32 _ _ NNP 36297 1174 33 BD BD NNP 36297 1174 34 _ _ NNP 36297 1174 35 downward downward RB 36297 1174 36 from from IN 36297 1174 37 the the DT 36297 1174 38 center center NN 36297 1174 39 . . . 36297 1175 1 In in IN 36297 1175 2 Fig Fig NNP 36297 1175 3 . . . 36297 1176 1 55 55 CD 36297 1176 2 the the DT 36297 1176 3 horizontal horizontal JJ 36297 1176 4 line line NN 36297 1176 5 appears appear VBZ 36297 1176 6 to to TO 36297 1176 7 tilt tilt VB 36297 1176 8 upward upward RB 36297 1176 9 toward toward IN 36297 1176 10 its -PRON- PRP$ 36297 1176 11 extremities extremity NNS 36297 1176 12 or or CC 36297 1176 13 to to TO 36297 1176 14 sag sag VB 36297 1176 15 in in IN 36297 1176 16 the the DT 36297 1176 17 middle middle NN 36297 1176 18 . . . 36297 1177 1 The the DT 36297 1177 2 explanation explanation NN 36297 1177 3 in in IN 36297 1177 4 order order NN 36297 1177 5 to to TO 36297 1177 6 harmonize harmonize VB 36297 1177 7 with with IN 36297 1177 8 the the DT 36297 1177 9 foregoing foregoing NN 36297 1177 10 must must MD 36297 1177 11 be be VB 36297 1177 12 based base VBN 36297 1177 13 upon upon IN 36297 1177 14 the the DT 36297 1177 15 assumption assumption NN 36297 1177 16 that that IN 36297 1177 17 our -PRON- PRP$ 36297 1177 18 judgments judgment NNS 36297 1177 19 may may MD 36297 1177 20 be be VB 36297 1177 21 influenced influence VBN 36297 1177 22 by by IN 36297 1177 23 things thing NNS 36297 1177 24 not not RB 36297 1177 25 present present JJ 36297 1177 26 but but CC 36297 1177 27 imagined imagine VBN 36297 1177 28 . . . 36297 1178 1 In in IN 36297 1178 2 this this DT 36297 1178 3 case case NN 36297 1178 4 only only RB 36297 1178 5 one one CD 36297 1178 6 side side NN 36297 1178 7 of of IN 36297 1178 8 each each DT 36297 1178 9 obtuse obtuse JJ 36297 1178 10 angle angle NN 36297 1178 11 is be VBZ 36297 1178 12 present present JJ 36297 1178 13 , , , 36297 1178 14 the the DT 36297 1178 15 other other JJ 36297 1178 16 side side NN 36297 1178 17 being be VBG 36297 1178 18 formed form VBN 36297 1178 19 by by IN 36297 1178 20 continuing continue VBG 36297 1178 21 the the DT 36297 1178 22 horizontal horizontal JJ 36297 1178 23 line line NN 36297 1178 24 both both DT 36297 1178 25 ways way NNS 36297 1178 26 by by IN 36297 1178 27 means mean NNS 36297 1178 28 of of IN 36297 1178 29 the the DT 36297 1178 30 imagination imagination NN 36297 1178 31 . . . 36297 1179 1 That that IN 36297 1179 2 we -PRON- PRP 36297 1179 3 do do VBP 36297 1179 4 this this DT 36297 1179 5 unconsciously unconsciously RB 36297 1179 6 is be VBZ 36297 1179 7 attested attest VBN 36297 1179 8 to to IN 36297 1179 9 by by IN 36297 1179 10 many many JJ 36297 1179 11 experiences experience NNS 36297 1179 12 . . . 36297 1180 1 For for IN 36297 1180 2 example example NN 36297 1180 3 , , , 36297 1180 4 we -PRON- PRP 36297 1180 5 often often RB 36297 1180 6 find find VBP 36297 1180 7 ourselves -PRON- PRP 36297 1180 8 imagining imagine VBG 36297 1180 9 a a DT 36297 1180 10 horizontal horizontal JJ 36297 1180 11 , , , 36297 1180 12 a a DT 36297 1180 13 vertical vertical JJ 36297 1180 14 , , , 36297 1180 15 or or CC 36297 1180 16 a a DT 36297 1180 17 center center NN 36297 1180 18 upon upon IN 36297 1180 19 which which WDT 36297 1180 20 to to TO 36297 1180 21 base base VB 36297 1180 22 a a DT 36297 1180 23 pending pende VBG 36297 1180 24 judgment judgment NN 36297 1180 25 . . . 36297 1181 1 A a DT 36297 1181 2 discussion discussion NN 36297 1181 3 of of IN 36297 1181 4 the the DT 36297 1181 5 influence influence NN 36297 1181 6 of of IN 36297 1181 7 angles angle NNS 36297 1181 8 must must MD 36297 1181 9 include include VB 36297 1181 10 a a DT 36297 1181 11 reference reference NN 36297 1181 12 to to IN 36297 1181 13 the the DT 36297 1181 14 well well RB 36297 1181 15 - - HYPH 36297 1181 16 known know VBN 36297 1181 17 Müller Müller NNP 36297 1181 18 - - HYPH 36297 1181 19 Lyer Lyer NNP 36297 1181 20 illusion illusion NN 36297 1181 21 presented present VBN 36297 1181 22 in in IN 36297 1181 23 Fig Fig NNP 36297 1181 24 . . . 36297 1182 1 56 56 CD 36297 1182 2 . . . 36297 1183 1 It -PRON- PRP 36297 1183 2 is be VBZ 36297 1183 3 obvious obvious JJ 36297 1183 4 in in IN 36297 1183 5 _ _ NNP 36297 1183 6 a a DT 36297 1183 7 _ _ NNP 36297 1183 8 that that IN 36297 1183 9 the the DT 36297 1183 10 horizontal horizontal JJ 36297 1183 11 part part NN 36297 1183 12 on on IN 36297 1183 13 the the DT 36297 1183 14 left left NN 36297 1183 15 appears appear VBZ 36297 1183 16 considerably considerably RB 36297 1183 17 longer long JJR 36297 1183 18 than than IN 36297 1183 19 that that DT 36297 1183 20 part part NN 36297 1183 21 in in IN 36297 1183 22 the the DT 36297 1183 23 right right JJ 36297 1183 24 half half NN 36297 1183 25 of of IN 36297 1183 26 the the DT 36297 1183 27 diagram diagram NN 36297 1183 28 . . . 36297 1184 1 The the DT 36297 1184 2 influence influence NN 36297 1184 3 of of IN 36297 1184 4 angles angle NNS 36297 1184 5 in in IN 36297 1184 6 this this DT 36297 1184 7 illusion illusion NN 36297 1184 8 can can MD 36297 1184 9 be be VB 36297 1184 10 easily easily RB 36297 1184 11 tested test VBN 36297 1184 12 by by IN 36297 1184 13 varying vary VBG 36297 1184 14 the the DT 36297 1184 15 direction direction NN 36297 1184 16 of of IN 36297 1184 17 the the DT 36297 1184 18 lines line NNS 36297 1184 19 at at IN 36297 1184 20 the the DT 36297 1184 21 ends end NNS 36297 1184 22 of of IN 36297 1184 23 the the DT 36297 1184 24 two two CD 36297 1184 25 portions portion NNS 36297 1184 26 . . . 36297 1185 1 [ [ -LRB- 36297 1185 2 Illustration illustration NN 36297 1185 3 : : : 36297 1185 4 Fig Fig NNP 36297 1185 5 . . . 36297 1186 1 56.--The 56.--the CD 36297 1186 2 Müller Müller NNP 36297 1186 3 - - HYPH 36297 1186 4 Lyer Lyer NNP 36297 1186 5 illusion illusion NN 36297 1186 6 . . . 36297 1186 7 ] ] -RRB- 36297 1187 1 In in IN 36297 1187 2 all all PDT 36297 1187 3 these these DT 36297 1187 4 figures figure NNS 36297 1187 5 the the DT 36297 1187 6 influence influence NN 36297 1187 7 of of IN 36297 1187 8 angles angle NNS 36297 1187 9 is be VBZ 36297 1187 10 obvious obvious JJ 36297 1187 11 . . . 36297 1188 1 This this DT 36297 1188 2 does do VBZ 36297 1188 3 not not RB 36297 1188 4 mean mean VB 36297 1188 5 that that IN 36297 1188 6 they -PRON- PRP 36297 1188 7 are be VBP 36297 1188 8 always always RB 36297 1188 9 solely solely RB 36297 1188 10 or or CC 36297 1188 11 even even RB 36297 1188 12 primarily primarily RB 36297 1188 13 responsible responsible JJ 36297 1188 14 for for IN 36297 1188 15 the the DT 36297 1188 16 illusion illusion NN 36297 1188 17 . . . 36297 1189 1 In in IN 36297 1189 2 fact fact NN 36297 1189 3 , , , 36297 1189 4 the the DT 36297 1189 5 illusion illusion NN 36297 1189 6 of of IN 36297 1189 7 Poggendorff Poggendorff NNP 36297 1189 8 ( ( -LRB- 36297 1189 9 Fig fig NN 36297 1189 10 . . . 36297 1190 1 46 46 CD 36297 1190 2 ) ) -RRB- 36297 1190 3 may may MD 36297 1190 4 be be VB 36297 1190 5 due due IN 36297 1190 6 to to IN 36297 1190 7 the the DT 36297 1190 8 incorrect incorrect JJ 36297 1190 9 estimation estimation NN 36297 1190 10 of of IN 36297 1190 11 certain certain JJ 36297 1190 12 linear linear JJ 36297 1190 13 distances distance NNS 36297 1190 14 , , , 36297 1190 15 but but CC 36297 1190 16 the the DT 36297 1190 17 angles angle NNS 36297 1190 18 make make VBP 36297 1190 19 this this DT 36297 1190 20 erroneous erroneous JJ 36297 1190 21 judgment judgment NN 36297 1190 22 possible possible JJ 36297 1190 23 , , , 36297 1190 24 or or CC 36297 1190 25 at at IN 36297 1190 26 least least JJS 36297 1190 27 contribute contribute VB 36297 1190 28 toward toward IN 36297 1190 29 it -PRON- PRP 36297 1190 30 . . . 36297 1191 1 Many many JJ 36297 1191 2 discussions discussion NNS 36297 1191 3 of of IN 36297 1191 4 the the DT 36297 1191 5 theories theory NNS 36297 1191 6 or or CC 36297 1191 7 explanations explanation NNS 36297 1191 8 of of IN 36297 1191 9 these these DT 36297 1191 10 figures figure NNS 36297 1191 11 are be VBP 36297 1191 12 available available JJ 36297 1191 13 in in IN 36297 1191 14 scientific scientific JJ 36297 1191 15 literature literature NN 36297 1191 16 of of IN 36297 1191 17 which which WDT 36297 1191 18 one one NN 36297 1191 19 by by IN 36297 1191 20 Judd[2 Judd[2 NNP 36297 1191 21 ] ] -RRB- 36297 1191 22 may may MD 36297 1191 23 be be VB 36297 1191 24 taken take VBN 36297 1191 25 as as IN 36297 1191 26 representative representative NN 36297 1191 27 . . . 36297 1192 1 He -PRON- PRP 36297 1192 2 holds hold VBZ 36297 1192 3 that that IN 36297 1192 4 the the DT 36297 1192 5 false false JJ 36297 1192 6 estimation estimation NN 36297 1192 7 of of IN 36297 1192 8 angles angle NNS 36297 1192 9 in in IN 36297 1192 10 the the DT 36297 1192 11 Poggendorff Poggendorff NNP 36297 1192 12 figure figure NN 36297 1192 13 is be VBZ 36297 1192 14 merely merely RB 36297 1192 15 a a DT 36297 1192 16 secondary secondary JJ 36297 1192 17 effect effect NN 36297 1192 18 , , , 36297 1192 19 not not RB 36297 1192 20 always always RB 36297 1192 21 present present JJ 36297 1192 22 , , , 36297 1192 23 and and CC 36297 1192 24 in in IN 36297 1192 25 no no DT 36297 1192 26 case case NN 36297 1192 27 the the DT 36297 1192 28 source source NN 36297 1192 29 of of IN 36297 1192 30 the the DT 36297 1192 31 illusion illusion NN 36297 1192 32 ; ; : 36297 1192 33 furthermore furthermore RB 36297 1192 34 , , , 36297 1192 35 that that IN 36297 1192 36 the the DT 36297 1192 37 illusion illusion NN 36297 1192 38 may may MD 36297 1192 39 be be VB 36297 1192 40 explained explain VBN 36297 1192 41 as as IN 36297 1192 42 due due IN 36297 1192 43 to to IN 36297 1192 44 the the DT 36297 1192 45 incorrect incorrect JJ 36297 1192 46 linear linear JJ 36297 1192 47 distances distance NNS 36297 1192 48 , , , 36297 1192 49 and and CC 36297 1192 50 may may MD 36297 1192 51 be be VB 36297 1192 52 reduced reduce VBN 36297 1192 53 to to IN 36297 1192 54 the the DT 36297 1192 55 type type NN 36297 1192 56 of of IN 36297 1192 57 illusion illusion NN 36297 1192 58 found find VBN 36297 1192 59 in in IN 36297 1192 60 the the DT 36297 1192 61 Müller Müller NNP 36297 1192 62 - - HYPH 36297 1192 63 Lyer Lyer NNP 36297 1192 64 figure figure NN 36297 1192 65 . . . 36297 1193 1 Certainly certainly RB 36297 1193 2 there there EX 36297 1193 3 are be VBP 36297 1193 4 grave grave JJ 36297 1193 5 dangers danger NNS 36297 1193 6 in in IN 36297 1193 7 explaining explain VBG 36297 1193 8 an an DT 36297 1193 9 illusion illusion NN 36297 1193 10 on on IN 36297 1193 11 the the DT 36297 1193 12 basis basis NN 36297 1193 13 of of IN 36297 1193 14 an an DT 36297 1193 15 apparently apparently RB 36297 1193 16 simple simple JJ 36297 1193 17 operation operation NN 36297 1193 18 . . . 36297 1194 1 In in IN 36297 1194 2 Fig Fig NNP 36297 1194 3 . . . 36297 1195 1 56 56 CD 36297 1195 2 , , , 36297 1195 3 _ _ NNP 36297 1195 4 b b NNP 36297 1195 5 _ _ NNP 36297 1195 6 is be VBZ 36297 1195 7 made make VBN 36297 1195 8 up up RP 36297 1195 9 of of IN 36297 1195 10 the the DT 36297 1195 11 two two CD 36297 1195 12 parts part NNS 36297 1195 13 of of IN 36297 1195 14 the the DT 36297 1195 15 Müller Müller NNP 36297 1195 16 - - HYPH 36297 1195 17 Lyer Lyer NNP 36297 1195 18 illusion illusion NN 36297 1195 19 . . . 36297 1196 1 A a DT 36297 1196 2 small small JJ 36297 1196 3 dot dot NN 36297 1196 4 may may MD 36297 1196 5 be be VB 36297 1196 6 placed place VBN 36297 1196 7 equally equally RB 36297 1196 8 distant distant JJ 36297 1196 9 from from IN 36297 1196 10 the the DT 36297 1196 11 inside inside JJ 36297 1196 12 extremities extremity NNS 36297 1196 13 of of IN 36297 1196 14 the the DT 36297 1196 15 horizontal horizontal JJ 36297 1196 16 lines line NNS 36297 1196 17 . . . 36297 1197 1 It -PRON- PRP 36297 1197 2 is be VBZ 36297 1197 3 interesting interesting JJ 36297 1197 4 to to TO 36297 1197 5 note note VB 36297 1197 6 that that IN 36297 1197 7 overestimation overestimation NN 36297 1197 8 of of IN 36297 1197 9 distance distance NN 36297 1197 10 within within IN 36297 1197 11 the the DT 36297 1197 12 figure figure NN 36297 1197 13 is be VBZ 36297 1197 14 accompanied accompany VBN 36297 1197 15 with with IN 36297 1197 16 underestimation underestimation NN 36297 1197 17 outside outside IN 36297 1197 18 the the DT 36297 1197 19 figure figure NN 36297 1197 20 and and CC 36297 1197 21 , , , 36297 1197 22 conversely conversely RB 36297 1197 23 , , , 36297 1197 24 overestimation overestimation NN 36297 1197 25 within within IN 36297 1197 26 the the DT 36297 1197 27 figure figure NN 36297 1197 28 is be VBZ 36297 1197 29 accompanied accompany VBN 36297 1197 30 by by IN 36297 1197 31 underestimation underestimation NN 36297 1197 32 in in IN 36297 1197 33 the the DT 36297 1197 34 neighboring neighboring NN 36297 1197 35 space space NN 36297 1197 36 . . . 36297 1198 1 If if IN 36297 1198 2 the the DT 36297 1198 3 small small JJ 36297 1198 4 dot dot NN 36297 1198 5 is be VBZ 36297 1198 6 objected object VBN 36297 1198 7 to to IN 36297 1198 8 as as IN 36297 1198 9 providing provide VBG 36297 1198 10 an an DT 36297 1198 11 additional additional JJ 36297 1198 12 Müller Müller NNP 36297 1198 13 - - HYPH 36297 1198 14 Lyer Lyer NNP 36297 1198 15 figure figure NN 36297 1198 16 of of IN 36297 1198 17 the the DT 36297 1198 18 empty empty JJ 36297 1198 19 space space NN 36297 1198 20 , , , 36297 1198 21 this this DT 36297 1198 22 dot dot NN 36297 1198 23 may may MD 36297 1198 24 be be VB 36297 1198 25 omitted omit VBN 36297 1198 26 . . . 36297 1199 1 As as IN 36297 1199 2 a a DT 36297 1199 3 substitute substitute NN 36297 1199 4 an an DT 36297 1199 5 observer observer NN 36297 1199 6 may may MD 36297 1199 7 try try VB 36297 1199 8 to to TO 36297 1199 9 locate locate VB 36297 1199 10 a a DT 36297 1199 11 point point NN 36297 1199 12 midway midway NN 36297 1199 13 between between IN 36297 1199 14 the the DT 36297 1199 15 inside inside JJ 36297 1199 16 extremities extremity NNS 36297 1199 17 of of IN 36297 1199 18 the the DT 36297 1199 19 horizontal horizontal JJ 36297 1199 20 lines line NNS 36297 1199 21 . . . 36297 1200 1 The the DT 36297 1200 2 error error NN 36297 1200 3 in in IN 36297 1200 4 locating locate VBG 36297 1200 5 this this DT 36297 1200 6 point point NN 36297 1200 7 will will MD 36297 1200 8 show show VB 36297 1200 9 that that IN 36297 1200 10 the the DT 36297 1200 11 illusion illusion NN 36297 1200 12 is be VBZ 36297 1200 13 present present JJ 36297 1200 14 in in IN 36297 1200 15 this this DT 36297 1200 16 empty empty JJ 36297 1200 17 space space NN 36297 1200 18 . . . 36297 1201 1 In in IN 36297 1201 2 this this DT 36297 1201 3 connection connection NN 36297 1201 4 it -PRON- PRP 36297 1201 5 is be VBZ 36297 1201 6 interesting interesting JJ 36297 1201 7 to to TO 36297 1201 8 note note VB 36297 1201 9 some some DT 36297 1201 10 other other JJ 36297 1201 11 illusions illusion NNS 36297 1201 12 . . . 36297 1202 1 In in IN 36297 1202 2 Fig Fig NNP 36297 1202 3 . . . 36297 1203 1 57 57 CD 36297 1203 2 the the DT 36297 1203 3 influence influence NN 36297 1203 4 of of IN 36297 1203 5 several several JJ 36297 1203 6 factors factor NNS 36297 1203 7 are be VBP 36297 1203 8 evident evident JJ 36297 1203 9 . . . 36297 1204 1 Two two CD 36297 1204 2 obviously obviously RB 36297 1204 3 important important JJ 36297 1204 4 ones one NNS 36297 1204 5 are be VBP 36297 1204 6 ( ( -LRB- 36297 1204 7 1 1 LS 36297 1204 8 ) ) -RRB- 36297 1204 9 the the DT 36297 1204 10 angles angle NNS 36297 1204 11 made make VBN 36297 1204 12 by by IN 36297 1204 13 the the DT 36297 1204 14 short short JJ 36297 1204 15 lines line NNS 36297 1204 16 at at IN 36297 1204 17 the the DT 36297 1204 18 extremities extremity NNS 36297 1204 19 of of IN 36297 1204 20 the the DT 36297 1204 21 exterior exterior NN 36297 1204 22 lines line NNS 36297 1204 23 parallel parallel JJ 36297 1204 24 to to IN 36297 1204 25 the the DT 36297 1204 26 sides side NNS 36297 1204 27 of of IN 36297 1204 28 the the DT 36297 1204 29 large large JJ 36297 1204 30 triangle triangle NN 36297 1204 31 , , , 36297 1204 32 and and CC 36297 1204 33 ( ( -LRB- 36297 1204 34 2 2 LS 36297 1204 35 ) ) -RRB- 36297 1204 36 the the DT 36297 1204 37 influence influence NN 36297 1204 38 of of IN 36297 1204 39 contrast contrast NN 36297 1204 40 of of IN 36297 1204 41 the the DT 36297 1204 42 pairs pair NNS 36297 1204 43 of of IN 36297 1204 44 adjacent adjacent JJ 36297 1204 45 parallel parallel JJ 36297 1204 46 lines line NNS 36297 1204 47 . . . 36297 1205 1 The the DT 36297 1205 2 effect effect NN 36297 1205 3 shown show VBN 36297 1205 4 in in IN 36297 1205 5 Fig Fig NNP 36297 1205 6 . . . 36297 1206 1 53 53 CD 36297 1206 2 is be VBZ 36297 1206 3 seen see VBN 36297 1206 4 to to TO 36297 1206 5 be be VB 36297 1206 6 augmented augment VBN 36297 1206 7 by by IN 36297 1206 8 the the DT 36297 1206 9 addition addition NN 36297 1206 10 of of IN 36297 1206 11 contrast contrast NN 36297 1206 12 of of IN 36297 1206 13 adjacent adjacent JJ 36297 1206 14 lines line NNS 36297 1206 15 of of IN 36297 1206 16 unequal unequal JJ 36297 1206 17 length length NN 36297 1206 18 . . . 36297 1207 1 An an DT 36297 1207 2 interesting interesting JJ 36297 1207 3 variation variation NN 36297 1207 4 of of IN 36297 1207 5 the the DT 36297 1207 6 effect effect NN 36297 1207 7 of of IN 36297 1207 8 the the DT 36297 1207 9 presence presence NN 36297 1207 10 of of IN 36297 1207 11 angles angle NNS 36297 1207 12 is be VBZ 36297 1207 13 seen see VBN 36297 1207 14 in in IN 36297 1207 15 Fig Fig NNP 36297 1207 16 . . . 36297 1208 1 58 58 CD 36297 1208 2 . . . 36297 1209 1 The the DT 36297 1209 2 two two CD 36297 1209 3 lines line NNS 36297 1209 4 forming form VBG 36297 1209 5 angles angle NNS 36297 1209 6 with with IN 36297 1209 7 the the DT 36297 1209 8 horizontal horizontal JJ 36297 1209 9 are be VBP 36297 1209 10 of of IN 36297 1209 11 equal equal JJ 36297 1209 12 length length NN 36297 1209 13 but but CC 36297 1209 14 due due IN 36297 1209 15 to to IN 36297 1209 16 their -PRON- PRP$ 36297 1209 17 relative relative JJ 36297 1209 18 positions position NNS 36297 1209 19 , , , 36297 1209 20 they -PRON- PRP 36297 1209 21 do do VBP 36297 1209 22 not not RB 36297 1209 23 appear appear VB 36297 1209 24 so so RB 36297 1209 25 . . . 36297 1210 1 It -PRON- PRP 36297 1210 2 would would MD 36297 1210 3 be be VB 36297 1210 4 quite quite RB 36297 1210 5 misleading misleading JJ 36297 1210 6 to to TO 36297 1210 7 say say VB 36297 1210 8 that that IN 36297 1210 9 this this DT 36297 1210 10 illusion illusion NN 36297 1210 11 is be VBZ 36297 1210 12 merely merely RB 36297 1210 13 due due JJ 36297 1210 14 to to IN 36297 1210 15 angles angle NNS 36297 1210 16 . . . 36297 1211 1 Obviously obviously RB 36297 1211 2 , , , 36297 1211 3 it -PRON- PRP 36297 1211 4 is be VBZ 36297 1211 5 due due JJ 36297 1211 6 to to IN 36297 1211 7 the the DT 36297 1211 8 presence presence NN 36297 1211 9 of of IN 36297 1211 10 the the DT 36297 1211 11 two two CD 36297 1211 12 oblique oblique JJ 36297 1211 13 lines line NNS 36297 1211 14 . . . 36297 1212 1 It -PRON- PRP 36297 1212 2 is be VBZ 36297 1212 3 of of IN 36297 1212 4 interest interest NN 36297 1212 5 to to TO 36297 1212 6 turn turn VB 36297 1212 7 to to IN 36297 1212 8 Figs fig NNS 36297 1212 9 . . . 36297 1213 1 25 25 CD 36297 1213 2 , , , 36297 1213 3 26 26 CD 36297 1213 4 and and CC 36297 1213 5 various various JJ 36297 1213 6 illusions illusion NNS 36297 1213 7 of of IN 36297 1213 8 perspective perspective NN 36297 1213 9 . . . 36297 1214 1 [ [ -LRB- 36297 1214 2 Illustration illustration NN 36297 1214 3 : : : 36297 1214 4 Fig Fig NNP 36297 1214 5 . . . 36297 1215 1 57.--Combined 57.--combined DT 36297 1215 2 influence influence NN 36297 1215 3 of of IN 36297 1215 4 angles angle NNS 36297 1215 5 and and CC 36297 1215 6 contrasting contrast VBG 36297 1215 7 lengths length NNS 36297 1215 8 . . . 36297 1215 9 ] ] -RRB- 36297 1216 1 [ [ -LRB- 36297 1216 2 Illustration illustration NN 36297 1216 3 : : : 36297 1216 4 Fig Fig NNP 36297 1216 5 . . . 36297 1217 1 58.--Two 58.--two CD 36297 1217 2 equal equal JJ 36297 1217 3 oblique oblique JJ 36297 1217 4 lines line NNS 36297 1217 5 appear appear VBP 36297 1217 6 unequal unequal JJ 36297 1217 7 because because IN 36297 1217 8 of of IN 36297 1217 9 their -PRON- PRP$ 36297 1217 10 different different JJ 36297 1217 11 positions position NNS 36297 1217 12 . . . 36297 1217 13 ] ] -RRB- 36297 1218 1 At at IN 36297 1218 2 this this DT 36297 1218 3 point point NN 36297 1218 4 a a DT 36297 1218 5 digression digression NN 36297 1218 6 appears appear VBZ 36297 1218 7 to to TO 36297 1218 8 be be VB 36297 1218 9 necessary necessary JJ 36297 1218 10 and and CC 36297 1218 11 , , , 36297 1218 12 therefore therefore RB 36297 1218 13 , , , 36297 1218 14 Fig Fig NNP 36297 1218 15 . . . 36297 1219 1 59 59 CD 36297 1219 2 is be VBZ 36297 1219 3 introduced introduce VBN 36297 1219 4 . . . 36297 1220 1 Here here RB 36297 1220 2 the the DT 36297 1220 3 areas area NNS 36297 1220 4 of of IN 36297 1220 5 the the DT 36297 1220 6 two two CD 36297 1220 7 figures figure NNS 36297 1220 8 are be VBP 36297 1220 9 equal equal JJ 36297 1220 10 . . . 36297 1221 1 The the DT 36297 1221 2 judgment judgment NN 36297 1221 3 of of IN 36297 1221 4 area area NN 36297 1221 5 is be VBZ 36297 1221 6 likely likely JJ 36297 1221 7 to to TO 36297 1221 8 be be VB 36297 1221 9 influenced influence VBN 36297 1221 10 by by IN 36297 1221 11 juxtaposed juxtaposed JJ 36297 1221 12 lines line NNS 36297 1221 13 and and CC 36297 1221 14 therefore therefore RB 36297 1221 15 , , , 36297 1221 16 as as IN 36297 1221 17 in in IN 36297 1221 18 this this DT 36297 1221 19 case case NN 36297 1221 20 , , , 36297 1221 21 the the DT 36297 1221 22 lower low JJR 36297 1221 23 appears appear VBZ 36297 1221 24 larger large JJR 36297 1221 25 than than IN 36297 1221 26 the the DT 36297 1221 27 upper upper JJ 36297 1221 28 one one NN 36297 1221 29 . . . 36297 1222 1 Similarly similarly RB 36297 1222 2 two two CD 36297 1222 3 trapezoids trapezoid NNS 36297 1222 4 of of IN 36297 1222 5 equal equal JJ 36297 1222 6 dimensions dimension NNS 36297 1222 7 and and CC 36297 1222 8 areas area NNS 36297 1222 9 may may MD 36297 1222 10 be be VB 36297 1222 11 constructed construct VBN 36297 1222 12 . . . 36297 1223 1 If if IN 36297 1223 2 each each DT 36297 1223 3 is be VBZ 36297 1223 4 constructed construct VBN 36297 1223 5 so so IN 36297 1223 6 that that IN 36297 1223 7 it -PRON- PRP 36297 1223 8 rests rest VBZ 36297 1223 9 upon upon IN 36297 1223 10 its -PRON- PRP$ 36297 1223 11 longer long JJR 36297 1223 12 parallel parallel NN 36297 1223 13 and and CC 36297 1223 14 one one CD 36297 1223 15 figure figure NN 36297 1223 16 is be VBZ 36297 1223 17 above above IN 36297 1223 18 the the DT 36297 1223 19 other other JJ 36297 1223 20 and and CC 36297 1223 21 only only RB 36297 1223 22 slightly slightly RB 36297 1223 23 separated separate VBN 36297 1223 24 , , , 36297 1223 25 the the DT 36297 1223 26 mind mind NN 36297 1223 27 is be VBZ 36297 1223 28 tempted tempt VBN 36297 1223 29 to to TO 36297 1223 30 be be VB 36297 1223 31 influenced influence VBN 36297 1223 32 by by IN 36297 1223 33 comparing compare VBG 36297 1223 34 the the DT 36297 1223 35 juxtaposed juxtaposed JJ 36297 1223 36 base base NN 36297 1223 37 of of IN 36297 1223 38 the the DT 36297 1223 39 upper upper JJ 36297 1223 40 with with IN 36297 1223 41 the the DT 36297 1223 42 top top NN 36297 1223 43 of of IN 36297 1223 44 the the DT 36297 1223 45 lower low JJR 36297 1223 46 trapezoid trapezoid NN 36297 1223 47 . . . 36297 1224 1 The the DT 36297 1224 2 former former JJ 36297 1224 3 dimension dimension NN 36297 1224 4 being be VBG 36297 1224 5 greater great JJR 36297 1224 6 than than IN 36297 1224 7 the the DT 36297 1224 8 latter latter JJ 36297 1224 9 , , , 36297 1224 10 the the DT 36297 1224 11 lower low JJR 36297 1224 12 figure figure NN 36297 1224 13 appears appear VBZ 36297 1224 14 smaller small JJR 36297 1224 15 than than IN 36297 1224 16 the the DT 36297 1224 17 upper upper JJ 36297 1224 18 one one NN 36297 1224 19 . . . 36297 1225 1 Angles angle NNS 36297 1225 2 must must MD 36297 1225 3 necessarily necessarily RB 36297 1225 4 play play VB 36297 1225 5 a a DT 36297 1225 6 part part NN 36297 1225 7 in in IN 36297 1225 8 these these DT 36297 1225 9 illusions illusion NNS 36297 1225 10 , , , 36297 1225 11 although although IN 36297 1225 12 it -PRON- PRP 36297 1225 13 is be VBZ 36297 1225 14 admitted admit VBN 36297 1225 15 that that IN 36297 1225 16 other other JJ 36297 1225 17 factors factor NNS 36297 1225 18 may may MD 36297 1225 19 be be VB 36297 1225 20 prominent prominent JJ 36297 1225 21 or or CC 36297 1225 22 even even RB 36297 1225 23 dominant dominant JJ 36297 1225 24 . . . 36297 1226 1 [ [ -LRB- 36297 1226 2 Illustration illustration NN 36297 1226 3 : : : 36297 1226 4 Fig Fig NNP 36297 1226 5 . . . 36297 1227 1 59.--An 59.--an CD 36297 1227 2 illusion illusion NN 36297 1227 3 of of IN 36297 1227 4 area area NN 36297 1227 5 . . . 36297 1227 6 ] ] -RRB- 36297 1228 1 This this DT 36297 1228 2 appears appear VBZ 36297 1228 3 to to TO 36297 1228 4 be be VB 36297 1228 5 a a DT 36297 1228 6 convenient convenient JJ 36297 1228 7 place place NN 36297 1228 8 to to TO 36297 1228 9 insert insert VB 36297 1228 10 an an DT 36297 1228 11 illusion illusion NN 36297 1228 12 of of IN 36297 1228 13 area area NN 36297 1228 14 based base VBN 36297 1228 15 , , , 36297 1228 16 doubtless doubtless RB 36297 1228 17 , , , 36297 1228 18 upon upon IN 36297 1228 19 form form NN 36297 1228 20 , , , 36297 1228 21 but but CC 36297 1228 22 angles angle NNS 36297 1228 23 must must MD 36297 1228 24 play play VB 36297 1228 25 a a DT 36297 1228 26 part part NN 36297 1228 27 in in IN 36297 1228 28 the the DT 36297 1228 29 illusions illusion NNS 36297 1228 30 ; ; : 36297 1228 31 at at IN 36297 1228 32 least least JJS 36297 1228 33 they -PRON- PRP 36297 1228 34 are be VBP 36297 1228 35 responsible responsible JJ 36297 1228 36 for for IN 36297 1228 37 the the DT 36297 1228 38 form form NN 36297 1228 39 . . . 36297 1229 1 In in IN 36297 1229 2 Fig Fig NNP 36297 1229 3 . . . 36297 1230 1 60 60 CD 36297 1230 2 the the DT 36297 1230 3 five five CD 36297 1230 4 figures figure NNS 36297 1230 5 are be VBP 36297 1230 6 constructed construct VBN 36297 1230 7 so so IN 36297 1230 8 as as IN 36297 1230 9 to to TO 36297 1230 10 be be VB 36297 1230 11 approximately approximately RB 36297 1230 12 equal equal JJ 36297 1230 13 in in IN 36297 1230 14 area area NN 36297 1230 15 . . . 36297 1231 1 However however RB 36297 1231 2 , , , 36297 1231 3 they -PRON- PRP 36297 1231 4 appear appear VBP 36297 1231 5 unequal unequal JJ 36297 1231 6 in in IN 36297 1231 7 this this DT 36297 1231 8 respect respect NN 36297 1231 9 . . . 36297 1232 1 In in IN 36297 1232 2 comparing compare VBG 36297 1232 3 areas area NNS 36297 1232 4 , , , 36297 1232 5 we -PRON- PRP 36297 1232 6 can can MD 36297 1232 7 not not RB 36297 1232 8 escape escape VB 36297 1232 9 the the DT 36297 1232 10 influence influence NN 36297 1232 11 of of IN 36297 1232 12 the the DT 36297 1232 13 length length NN 36297 1232 14 and and CC 36297 1232 15 directions direction NNS 36297 1232 16 of of IN 36297 1232 17 lines line NNS 36297 1232 18 which which WDT 36297 1232 19 bound bind VBD 36297 1232 20 these these DT 36297 1232 21 areas area NNS 36297 1232 22 , , , 36297 1232 23 and and CC 36297 1232 24 also also RB 36297 1232 25 , , , 36297 1232 26 the the DT 36297 1232 27 effect effect NN 36297 1232 28 of of IN 36297 1232 29 contrasts contrast NNS 36297 1232 30 in in IN 36297 1232 31 lengths length NNS 36297 1232 32 and and CC 36297 1232 33 directions direction NNS 36297 1232 34 . . . 36297 1233 1 Angles angle NNS 36297 1233 2 play play VBP 36297 1233 3 a a DT 36297 1233 4 part part NN 36297 1233 5 in in IN 36297 1233 6 all all PDT 36297 1233 7 these these DT 36297 1233 8 , , , 36297 1233 9 although although IN 36297 1233 10 very very RB 36297 1233 11 indirectly indirectly RB 36297 1233 12 in in IN 36297 1233 13 some some DT 36297 1233 14 cases case NNS 36297 1233 15 . . . 36297 1234 1 [ [ -LRB- 36297 1234 2 Illustration illustration NN 36297 1234 3 : : : 36297 1234 4 Fig Fig NNP 36297 1234 5 . . . 36297 1235 1 60.--Five 60.--Five `` 36297 1235 2 equal equal JJ 36297 1235 3 areas area NNS 36297 1235 4 showing show VBG 36297 1235 5 the the DT 36297 1235 6 influence influence NN 36297 1235 7 of of IN 36297 1235 8 angles angle NNS 36297 1235 9 and and CC 36297 1235 10 contrasting contrast VBG 36297 1235 11 lengths length NNS 36297 1235 12 . . . 36297 1235 13 ] ] -RRB- 36297 1236 1 To to IN 36297 1236 2 some some DT 36297 1236 3 extent extent NN 36297 1236 4 the the DT 36297 1236 5 foregoing foregoing NN 36297 1236 6 is be VBZ 36297 1236 7 a a DT 36297 1236 8 digression digression NN 36297 1236 9 from from IN 36297 1236 10 the the DT 36297 1236 11 main main JJ 36297 1236 12 intent intent NN 36297 1236 13 of of IN 36297 1236 14 this this DT 36297 1236 15 chapter chapter NN 36297 1236 16 , , , 36297 1236 17 but but CC 36297 1236 18 it -PRON- PRP 36297 1236 19 appears appear VBZ 36297 1236 20 worth worth JJ 36297 1236 21 while while IN 36297 1236 22 to to TO 36297 1236 23 introduce introduce VB 36297 1236 24 these these DT 36297 1236 25 indirect indirect JJ 36297 1236 26 effects effect NNS 36297 1236 27 of of IN 36297 1236 28 the the DT 36297 1236 29 presence presence NN 36297 1236 30 of of IN 36297 1236 31 angles angle NNS 36297 1236 32 ( ( -LRB- 36297 1236 33 real real JJ 36297 1236 34 or or CC 36297 1236 35 imaginary imaginary JJ 36297 1236 36 ) ) -RRB- 36297 1236 37 in in IN 36297 1236 38 order order NN 36297 1236 39 to to TO 36297 1236 40 emphasize emphasize VB 36297 1236 41 the the DT 36297 1236 42 complexity complexity NN 36297 1236 43 of of IN 36297 1236 44 influences influence NNS 36297 1236 45 and and CC 36297 1236 46 their -PRON- PRP$ 36297 1236 47 subtleness subtleness NN 36297 1236 48 . . . 36297 1237 1 Direction direction NN 36297 1237 2 is be VBZ 36297 1237 3 in in IN 36297 1237 4 the the DT 36297 1237 5 last last JJ 36297 1237 6 analysis analysis NN 36297 1237 7 an an DT 36297 1237 8 effect effect NN 36297 1237 9 of of IN 36297 1237 10 angle angle NN 36297 1237 11 ; ; : 36297 1237 12 that that RB 36297 1237 13 is is RB 36297 1237 14 , , , 36297 1237 15 the the DT 36297 1237 16 direction direction NN 36297 1237 17 of of IN 36297 1237 18 a a DT 36297 1237 19 line line NN 36297 1237 20 is be VBZ 36297 1237 21 measured measure VBN 36297 1237 22 by by IN 36297 1237 23 the the DT 36297 1237 24 angle angle NN 36297 1237 25 it -PRON- PRP 36297 1237 26 makes make VBZ 36297 1237 27 with with IN 36297 1237 28 some some DT 36297 1237 29 reference reference NN 36297 1237 30 line line NN 36297 1237 31 , , , 36297 1237 32 the the DT 36297 1237 33 latter latter JJ 36297 1237 34 being be VBG 36297 1237 35 real real JJ 36297 1237 36 or or CC 36297 1237 37 imaginary imaginary JJ 36297 1237 38 . . . 36297 1238 1 In in IN 36297 1238 2 Fig Fig NNP 36297 1238 3 . . . 36297 1239 1 61 61 CD 36297 1239 2 , , , 36297 1239 3 the the DT 36297 1239 4 effect effect NN 36297 1239 5 of of IN 36297 1239 6 diverting divert VBG 36297 1239 7 or or CC 36297 1239 8 directing direct VBG 36297 1239 9 attention attention NN 36297 1239 10 by by IN 36297 1239 11 some some DT 36297 1239 12 subtle subtle JJ 36297 1239 13 force force NN 36297 1239 14 , , , 36297 1239 15 such such JJ 36297 1239 16 as as IN 36297 1239 17 suggestion suggestion NN 36297 1239 18 , , , 36297 1239 19 is be VBZ 36297 1239 20 demonstrated demonstrate VBN 36297 1239 21 . . . 36297 1240 1 This this DT 36297 1240 2 " " `` 36297 1240 3 force force NN 36297 1240 4 " " '' 36297 1240 5 appears appear VBZ 36297 1240 6 to to TO 36297 1240 7 contract contract VB 36297 1240 8 or or CC 36297 1240 9 expand expand VB 36297 1240 10 an an DT 36297 1240 11 area area NN 36297 1240 12 . . . 36297 1241 1 The the DT 36297 1241 2 circle circle NN 36297 1241 3 on on IN 36297 1241 4 the the DT 36297 1241 5 left left NN 36297 1241 6 appears appear VBZ 36297 1241 7 smaller small JJR 36297 1241 8 than than IN 36297 1241 9 the the DT 36297 1241 10 other other JJ 36297 1241 11 . . . 36297 1242 1 Of of RB 36297 1242 2 course course RB 36297 1242 3 there there EX 36297 1242 4 is be VBZ 36297 1242 5 the the DT 36297 1242 6 effect effect NN 36297 1242 7 of of IN 36297 1242 8 empty empty JJ 36297 1242 9 space space NN 36297 1242 10 compared compare VBN 36297 1242 11 with with IN 36297 1242 12 partially partially RB 36297 1242 13 filled fill VBN 36297 1242 14 space space NN 36297 1242 15 , , , 36297 1242 16 but but CC 36297 1242 17 this this DT 36297 1242 18 can can MD 36297 1242 19 not not RB 36297 1242 20 be be VB 36297 1242 21 avoided avoid VBN 36297 1242 22 in in IN 36297 1242 23 this this DT 36297 1242 24 case case NN 36297 1242 25 . . . 36297 1243 1 However however RB 36297 1243 2 , , , 36297 1243 3 it -PRON- PRP 36297 1243 4 can can MD 36297 1243 5 be be VB 36297 1243 6 shown show VBN 36297 1243 7 that that IN 36297 1243 8 the the DT 36297 1243 9 suggestions suggestion NNS 36297 1243 10 produced produce VBN 36297 1243 11 by by IN 36297 1243 12 the the DT 36297 1243 13 arrows arrow NNS 36297 1243 14 tend tend VBP 36297 1243 15 to to TO 36297 1243 16 produce produce VB 36297 1243 17 apparent apparent JJ 36297 1243 18 reduction reduction NN 36297 1243 19 or or CC 36297 1243 20 expansion expansion NN 36297 1243 21 of of IN 36297 1243 22 areas area NNS 36297 1243 23 . . . 36297 1244 1 Note note VB 36297 1244 2 the the DT 36297 1244 3 use use NN 36297 1244 4 of of IN 36297 1244 5 arrows arrow NNS 36297 1244 6 in in IN 36297 1244 7 advertisements advertisement NNS 36297 1244 8 . . . 36297 1245 1 [ [ -LRB- 36297 1245 2 Illustration illustration NN 36297 1245 3 : : : 36297 1245 4 Fig Fig NNP 36297 1245 5 . . . 36297 1246 1 61.--Showing 61.--showing CD 36297 1246 2 the the DT 36297 1246 3 effect effect NN 36297 1246 4 of of IN 36297 1246 5 directing direct VBG 36297 1246 6 the the DT 36297 1246 7 attention attention NN 36297 1246 8 . . . 36297 1246 9 ] ] -RRB- 36297 1247 1 Although although IN 36297 1247 2 theory theory NN 36297 1247 3 is be VBZ 36297 1247 4 subordinated subordinate VBN 36297 1247 5 to to IN 36297 1247 6 facts fact NNS 36297 1247 7 in in IN 36297 1247 8 this this DT 36297 1247 9 book book NN 36297 1247 10 , , , 36297 1247 11 a a DT 36297 1247 12 glimpse glimpse NN 36297 1247 13 here here RB 36297 1247 14 and and CC 36297 1247 15 there there EX 36297 1247 16 should should MD 36297 1247 17 be be VB 36297 1247 18 interesting interesting JJ 36297 1247 19 and and CC 36297 1247 20 helpful helpful JJ 36297 1247 21 . . . 36297 1248 1 After after IN 36297 1248 2 having have VBG 36297 1248 3 been be VBN 36297 1248 4 introduced introduce VBN 36297 1248 5 to to IN 36297 1248 6 various various JJ 36297 1248 7 types type NNS 36297 1248 8 and and CC 36297 1248 9 influences influence NNS 36297 1248 10 , , , 36297 1248 11 perhaps perhaps RB 36297 1248 12 the the DT 36297 1248 13 reader reader NN 36297 1248 14 may may MD 36297 1248 15 better well RBR 36297 1248 16 grasp grasp VB 36297 1248 17 the the DT 36297 1248 18 trend trend NN 36297 1248 19 of of IN 36297 1248 20 theories theory NNS 36297 1248 21 . . . 36297 1249 1 The the DT 36297 1249 2 perspective perspective NN 36297 1249 3 theory theory NN 36297 1249 4 assumes assume VBZ 36297 1249 5 , , , 36297 1249 6 and and CC 36297 1249 7 correctly correctly RB 36297 1249 8 so so RB 36297 1249 9 , , , 36297 1249 10 that that IN 36297 1249 11 simple simple JJ 36297 1249 12 diagrams diagram NNS 36297 1249 13 often often RB 36297 1249 14 suggest suggest VBP 36297 1249 15 objects object NNS 36297 1249 16 in in IN 36297 1249 17 three three CD 36297 1249 18 dimensions dimension NNS 36297 1249 19 , , , 36297 1249 20 and and CC 36297 1249 21 that that IN 36297 1249 22 the the DT 36297 1249 23 introduction introduction NN 36297 1249 24 of of IN 36297 1249 25 an an DT 36297 1249 26 imaginary imaginary JJ 36297 1249 27 third third JJ 36297 1249 28 dimension dimension NN 36297 1249 29 effects effect NNS 36297 1249 30 changes change NNS 36297 1249 31 in in IN 36297 1249 32 the the DT 36297 1249 33 appearance appearance NN 36297 1249 34 of of IN 36297 1249 35 lines line NNS 36297 1249 36 and and CC 36297 1249 37 angles angle NNS 36297 1249 38 . . . 36297 1250 1 That that RB 36297 1250 2 is is RB 36297 1250 3 , , , 36297 1250 4 lengths length NNS 36297 1250 5 and and CC 36297 1250 6 directions direction NNS 36297 1250 7 of of IN 36297 1250 8 lines line NNS 36297 1250 9 are be VBP 36297 1250 10 apparently apparently RB 36297 1250 11 altered alter VBN 36297 1250 12 by by IN 36297 1250 13 the the DT 36297 1250 14 influence influence NN 36297 1250 15 of of IN 36297 1250 16 lines line NNS 36297 1250 17 and and CC 36297 1250 18 angles angle NNS 36297 1250 19 , , , 36297 1250 20 which which WDT 36297 1250 21 do do VBP 36297 1250 22 not not RB 36297 1250 23 actually actually RB 36297 1250 24 exist exist VB 36297 1250 25 . . . 36297 1251 1 That that IN 36297 1251 2 this this DT 36297 1251 3 is be VBZ 36297 1251 4 true true JJ 36297 1251 5 may may MD 36297 1251 6 be be VB 36297 1251 7 proved prove VBN 36297 1251 8 in in IN 36297 1251 9 various various JJ 36297 1251 10 cases case NNS 36297 1251 11 . . . 36297 1252 1 In in IN 36297 1252 2 fact fact NN 36297 1252 3 the the DT 36297 1252 4 reader reader NN 36297 1252 5 has have VBZ 36297 1252 6 doubtless doubtless RB 36297 1252 7 been be VBN 36297 1252 8 convinced convince VBN 36297 1252 9 of of IN 36297 1252 10 this this DT 36297 1252 11 in in IN 36297 1252 12 connection connection NN 36297 1252 13 with with IN 36297 1252 14 some some DT 36297 1252 15 of of IN 36297 1252 16 the the DT 36297 1252 17 illusions illusion NNS 36297 1252 18 already already RB 36297 1252 19 discussed discuss VBN 36297 1252 20 . . . 36297 1253 1 Vertical vertical JJ 36297 1253 2 lines line NNS 36297 1253 3 often often RB 36297 1253 4 represent represent VBP 36297 1253 5 lines line NNS 36297 1253 6 extending extend VBG 36297 1253 7 away away RB 36297 1253 8 from from IN 36297 1253 9 the the DT 36297 1253 10 observer observer NN 36297 1253 11 , , , 36297 1253 12 who who WP 36297 1253 13 sees see VBZ 36297 1253 14 them -PRON- PRP 36297 1253 15 foreshortened foreshorten VBN 36297 1253 16 and and CC 36297 1253 17 therefore therefore RB 36297 1253 18 they -PRON- PRP 36297 1253 19 may may MD 36297 1253 20 seem seem VB 36297 1253 21 longer long JJR 36297 1253 22 than than IN 36297 1253 23 horizontal horizontal JJ 36297 1253 24 lines line NNS 36297 1253 25 of of IN 36297 1253 26 equal equal JJ 36297 1253 27 length length NN 36297 1253 28 , , , 36297 1253 29 which which WDT 36297 1253 30 are be VBP 36297 1253 31 not not RB 36297 1253 32 subject subject JJ 36297 1253 33 to to IN 36297 1253 34 foreshortening foreshorten VBG 36297 1253 35 . . . 36297 1254 1 This this DT 36297 1254 2 could could MD 36297 1254 3 explain explain VB 36297 1254 4 such such JJ 36297 1254 5 illusions illusion NNS 36297 1254 6 as as IN 36297 1254 7 seen see VBN 36297 1254 8 in in IN 36297 1254 9 Figs Figs NNP 36297 1254 10 . . . 36297 1255 1 4 4 CD 36297 1255 2 and and CC 36297 1255 3 5 5 CD 36297 1255 4 . . . 36297 1256 1 However however RB 36297 1256 2 this this DT 36297 1256 3 theory theory NN 36297 1256 4 is be VBZ 36297 1256 5 not not RB 36297 1256 6 as as RB 36297 1256 7 easily easily RB 36297 1256 8 applied apply VBN 36297 1256 9 to to IN 36297 1256 10 many many JJ 36297 1256 11 illusions illusion NNS 36297 1256 12 . . . 36297 1257 1 According accord VBG 36297 1257 2 to to IN 36297 1257 3 Thiéry Thiéry NNP 36297 1257 4 's 's POS 36297 1257 5 perspective perspective NN 36297 1257 6 theory theory NN 36297 1257 7 a a DT 36297 1257 8 line line NN 36297 1257 9 that that WDT 36297 1257 10 appears appear VBZ 36297 1257 11 nearer near JJR 36297 1257 12 is be VBZ 36297 1257 13 seen see VBN 36297 1257 14 as as IN 36297 1257 15 smaller small JJR 36297 1257 16 and and CC 36297 1257 17 a a DT 36297 1257 18 line line NN 36297 1257 19 that that WDT 36297 1257 20 seems seem VBZ 36297 1257 21 to to TO 36297 1257 22 be be VB 36297 1257 23 further further RB 36297 1257 24 away away RB 36297 1257 25 is be VBZ 36297 1257 26 perceived perceive VBN 36297 1257 27 as as RB 36297 1257 28 longer long RBR 36297 1257 29 . . . 36297 1258 1 If if IN 36297 1258 2 the the DT 36297 1258 3 left left JJ 36297 1258 4 portion portion NN 36297 1258 5 of of IN 36297 1258 6 _ _ NNP 36297 1258 7 b b NNP 36297 1258 8 _ _ NNP 36297 1258 9 , , , 36297 1258 10 Fig Fig NNP 36297 1258 11 . . . 36297 1259 1 56 56 CD 36297 1259 2 , , , 36297 1259 3 be be VB 36297 1259 4 reproduced reproduce VBN 36297 1259 5 with with IN 36297 1259 6 longer long JJR 36297 1259 7 oblique oblique JJ 36297 1259 8 lines line NNS 36297 1259 9 at at IN 36297 1259 10 the the DT 36297 1259 11 ends end NNS 36297 1259 12 but but CC 36297 1259 13 with with IN 36297 1259 14 the the DT 36297 1259 15 same same JJ 36297 1259 16 length length NN 36297 1259 17 of of IN 36297 1259 18 horizontal horizontal JJ 36297 1259 19 lines line NNS 36297 1259 20 , , , 36297 1259 21 it -PRON- PRP 36297 1259 22 will will MD 36297 1259 23 appear appear VB 36297 1259 24 closer close RBR 36297 1259 25 and and CC 36297 1259 26 the the DT 36297 1259 27 horizontal horizontal JJ 36297 1259 28 lines line NNS 36297 1259 29 will will MD 36297 1259 30 be be VB 36297 1259 31 judged judge VBN 36297 1259 32 as as IN 36297 1259 33 shorter short JJR 36297 1259 34 . . . 36297 1260 1 The the DT 36297 1260 2 reader reader NN 36297 1260 3 will will MD 36297 1260 4 find find VB 36297 1260 5 it -PRON- PRP 36297 1260 6 interesting interesting JJ 36297 1260 7 to to TO 36297 1260 8 draw draw VB 36297 1260 9 a a DT 36297 1260 10 number number NN 36297 1260 11 of of IN 36297 1260 12 these these DT 36297 1260 13 portions portion NNS 36297 1260 14 of of IN 36297 1260 15 the the DT 36297 1260 16 Müller Müller NNP 36297 1260 17 - - HYPH 36297 1260 18 Lyer Lyer NNP 36297 1260 19 figure figure NN 36297 1260 20 with with IN 36297 1260 21 the the DT 36297 1260 22 horizontal horizontal JJ 36297 1260 23 line line NN 36297 1260 24 in in IN 36297 1260 25 each each DT 36297 1260 26 case case NN 36297 1260 27 of of IN 36297 1260 28 the the DT 36297 1260 29 same same JJ 36297 1260 30 length length NN 36297 1260 31 but but CC 36297 1260 32 with with IN 36297 1260 33 longer long JJR 36297 1260 34 and and CC 36297 1260 35 longer long JJR 36297 1260 36 obliques oblique VBZ 36297 1260 37 at at IN 36297 1260 38 the the DT 36297 1260 39 ends end NNS 36297 1260 40 . . . 36297 1261 1 The the DT 36297 1261 2 dynamic dynamic JJ 36297 1261 3 theory theory NN 36297 1261 4 of of IN 36297 1261 5 Lipps Lipps NNP 36297 1261 6 gives give VBZ 36297 1261 7 an an DT 36297 1261 8 important important JJ 36297 1261 9 role role NN 36297 1261 10 to to IN 36297 1261 11 the the DT 36297 1261 12 inner inner JJ 36297 1261 13 activity activity NN 36297 1261 14 of of IN 36297 1261 15 the the DT 36297 1261 16 observer observer NN 36297 1261 17 , , , 36297 1261 18 which which WDT 36297 1261 19 is be VBZ 36297 1261 20 not not RB 36297 1261 21 necessarily necessarily RB 36297 1261 22 separated separate VBN 36297 1261 23 from from IN 36297 1261 24 the the DT 36297 1261 25 objects object NNS 36297 1261 26 viewed view VBN 36297 1261 27 , , , 36297 1261 28 but but CC 36297 1261 29 may may MD 36297 1261 30 be be VB 36297 1261 31 felt feel VBN 36297 1261 32 as as IN 36297 1261 33 being be VBG 36297 1261 34 in in IN 36297 1261 35 the the DT 36297 1261 36 objects object NNS 36297 1261 37 . . . 36297 1262 1 That that RB 36297 1262 2 is is RB 36297 1262 3 , , , 36297 1262 4 in in IN 36297 1262 5 viewing view VBG 36297 1262 6 a a DT 36297 1262 7 figure figure NN 36297 1262 8 the the DT 36297 1262 9 observer observer NN 36297 1262 10 unconsciously unconsciously RB 36297 1262 11 separates separate VBZ 36297 1262 12 it -PRON- PRP 36297 1262 13 from from IN 36297 1262 14 surrounding surround VBG 36297 1262 15 space space NN 36297 1262 16 and and CC 36297 1262 17 therefore therefore RB 36297 1262 18 creates create VBZ 36297 1262 19 something something NN 36297 1262 20 definite definite JJ 36297 1262 21 in in IN 36297 1262 22 the the DT 36297 1262 23 latter latter JJ 36297 1262 24 , , , 36297 1262 25 as as IN 36297 1262 26 a a DT 36297 1262 27 limiting limit VBG 36297 1262 28 activity activity NN 36297 1262 29 . . . 36297 1263 1 These these DT 36297 1263 2 two two CD 36297 1263 3 things thing NNS 36297 1263 4 , , , 36297 1263 5 one one CD 36297 1263 6 real real JJ 36297 1263 7 ( ( -LRB- 36297 1263 8 the the DT 36297 1263 9 object object NN 36297 1263 10 ) ) -RRB- 36297 1263 11 and and CC 36297 1263 12 one one CD 36297 1263 13 imaginary imaginary NN 36297 1263 14 , , , 36297 1263 15 are be VBP 36297 1263 16 balanced balance VBN 36297 1263 17 against against IN 36297 1263 18 each each DT 36297 1263 19 other other JJ 36297 1263 20 . . . 36297 1264 1 A a DT 36297 1264 2 vertical vertical JJ 36297 1264 3 line line NN 36297 1264 4 may may MD 36297 1264 5 suggest suggest VB 36297 1264 6 a a DT 36297 1264 7 necessary necessary JJ 36297 1264 8 resistance resistance NN 36297 1264 9 against against IN 36297 1264 10 gravitational gravitational JJ 36297 1264 11 force force NN 36297 1264 12 , , , 36297 1264 13 with with IN 36297 1264 14 the the DT 36297 1264 15 result result NN 36297 1264 16 that that IN 36297 1264 17 the the DT 36297 1264 18 line line NN 36297 1264 19 appears appear VBZ 36297 1264 20 longer long JJR 36297 1264 21 than than IN 36297 1264 22 a a DT 36297 1264 23 horizontal horizontal JJ 36297 1264 24 one one CD 36297 1264 25 resting rest VBG 36297 1264 26 in in IN 36297 1264 27 peace peace NN 36297 1264 28 . . . 36297 1265 1 The the DT 36297 1265 2 difficulty difficulty NN 36297 1265 3 with with IN 36297 1265 4 this this DT 36297 1265 5 theory theory NN 36297 1265 6 is be VBZ 36297 1265 7 that that IN 36297 1265 8 it -PRON- PRP 36297 1265 9 allows allow VBZ 36297 1265 10 too too RB 36297 1265 11 much much JJ 36297 1265 12 opportunity opportunity NN 36297 1265 13 for for IN 36297 1265 14 purely purely RB 36297 1265 15 philosophical philosophical JJ 36297 1265 16 explanations explanation NNS 36297 1265 17 , , , 36297 1265 18 which which WDT 36297 1265 19 are be VBP 36297 1265 20 likely likely JJ 36297 1265 21 to to TO 36297 1265 22 run run VB 36297 1265 23 to to IN 36297 1265 24 the the DT 36297 1265 25 fanciful fanciful JJ 36297 1265 26 . . . 36297 1266 1 It -PRON- PRP 36297 1266 2 has have VBZ 36297 1266 3 the the DT 36297 1266 4 doubtful doubtful JJ 36297 1266 5 advantage advantage NN 36297 1266 6 of of IN 36297 1266 7 being be VBG 36297 1266 8 able able JJ 36297 1266 9 to to TO 36297 1266 10 explain explain VB 36297 1266 11 illusions illusion NNS 36297 1266 12 equally equally RB 36297 1266 13 well well RB 36297 1266 14 if if IN 36297 1266 15 they -PRON- PRP 36297 1266 16 are be VBP 36297 1266 17 actually actually RB 36297 1266 18 reversed reverse VBN 36297 1266 19 from from IN 36297 1266 20 what what WP 36297 1266 21 they -PRON- PRP 36297 1266 22 are be VBP 36297 1266 23 . . . 36297 1267 1 For for IN 36297 1267 2 example example NN 36297 1267 3 , , , 36297 1267 4 gravity gravity NN 36297 1267 5 could could MD 36297 1267 6 either either CC 36297 1267 7 contract contract VB 36297 1267 8 or or CC 36297 1267 9 elongate elongate VB 36297 1267 10 the the DT 36297 1267 11 vertical vertical JJ 36297 1267 12 line line NN 36297 1267 13 , , , 36297 1267 14 depending depend VBG 36297 1267 15 upon upon IN 36297 1267 16 the the DT 36297 1267 17 choice choice NN 36297 1267 18 of of IN 36297 1267 19 viewpoint viewpoint NN 36297 1267 20 . . . 36297 1268 1 The the DT 36297 1268 2 confusion confusion NN 36297 1268 3 theory theory NN 36297 1268 4 depends depend VBZ 36297 1268 5 upon upon IN 36297 1268 6 attention attention NN 36297 1268 7 and and CC 36297 1268 8 begins begin VBZ 36297 1268 9 with with IN 36297 1268 10 the the DT 36297 1268 11 difficulty difficulty NN 36297 1268 12 of of IN 36297 1268 13 isolating isolate VBG 36297 1268 14 from from IN 36297 1268 15 illusory illusory JJ 36297 1268 16 figures figure NNS 36297 1268 17 the the DT 36297 1268 18 portions portion NNS 36297 1268 19 to to TO 36297 1268 20 be be VB 36297 1268 21 judged judge VBN 36297 1268 22 . . . 36297 1269 1 Amid amid IN 36297 1269 2 the the DT 36297 1269 3 complexity complexity NN 36297 1269 4 of of IN 36297 1269 5 the the DT 36297 1269 6 figure figure NN 36297 1269 7 the the DT 36297 1269 8 attention attention NN 36297 1269 9 can can MD 36297 1269 10 not not RB 36297 1269 11 easily easily RB 36297 1269 12 be be VB 36297 1269 13 fixed fix VBN 36297 1269 14 on on IN 36297 1269 15 the the DT 36297 1269 16 portions portion NNS 36297 1269 17 to to TO 36297 1269 18 be be VB 36297 1269 19 judged judge VBN 36297 1269 20 . . . 36297 1270 1 This this DT 36297 1270 2 results result VBZ 36297 1270 3 in in IN 36297 1270 4 confusion confusion NN 36297 1270 5 . . . 36297 1271 1 For for IN 36297 1271 2 example example NN 36297 1271 3 , , , 36297 1271 4 if if IN 36297 1271 5 areas area NNS 36297 1271 6 of of IN 36297 1271 7 different different JJ 36297 1271 8 shapes shape NNS 36297 1271 9 such such JJ 36297 1271 10 as as IN 36297 1271 11 those those DT 36297 1271 12 in in IN 36297 1271 13 Fig Fig NNP 36297 1271 14 . . . 36297 1272 1 60 60 CD 36297 1272 2 are be VBP 36297 1272 3 to to TO 36297 1272 4 be be VB 36297 1272 5 compared compare VBN 36297 1272 6 , , , 36297 1272 7 it -PRON- PRP 36297 1272 8 is be VBZ 36297 1272 9 difficult difficult JJ 36297 1272 10 to to TO 36297 1272 11 become become VB 36297 1272 12 oblivious oblivious JJ 36297 1272 13 of of IN 36297 1272 14 form form NN 36297 1272 15 or or CC 36297 1272 16 of of IN 36297 1272 17 compactness compactness NN 36297 1272 18 . . . 36297 1273 1 In in IN 36297 1273 2 trying try VBG 36297 1273 3 to to TO 36297 1273 4 see see VB 36297 1273 5 the the DT 36297 1273 6 two two CD 36297 1273 7 chief chief JJ 36297 1273 8 parallel parallel JJ 36297 1273 9 lines line NNS 36297 1273 10 in in IN 36297 1273 11 Fig Fig NNP 36297 1273 12 . . . 36297 1274 1 38 38 CD 36297 1274 2 , , , 36297 1274 3 in in IN 36297 1274 4 their -PRON- PRP$ 36297 1274 5 true true JJ 36297 1274 6 parallelism parallelism NN 36297 1274 7 the the DT 36297 1274 8 attention attention NN 36297 1274 9 is be VBZ 36297 1274 10 being be VBG 36297 1274 11 subjected subject VBN 36297 1274 12 to to IN 36297 1274 13 diversion diversion NN 36297 1274 14 , , , 36297 1274 15 by by IN 36297 1274 16 the the DT 36297 1274 17 short short JJ 36297 1274 18 oblique oblique JJ 36297 1274 19 parallels parallel NNS 36297 1274 20 with with IN 36297 1274 21 a a DT 36297 1274 22 compromising compromising JJ 36297 1274 23 result result NN 36297 1274 24 . . . 36297 1275 1 Surely surely RB 36297 1275 2 this this DT 36297 1275 3 theory theory NN 36297 1275 4 explains explain VBZ 36297 1275 5 some some DT 36297 1275 6 illusions illusion NNS 36297 1275 7 successfully successfully RB 36297 1275 8 , , , 36297 1275 9 but but CC 36297 1275 10 it -PRON- PRP 36297 1275 11 is be VBZ 36297 1275 12 not not RB 36297 1275 13 so so RB 36297 1275 14 successful successful JJ 36297 1275 15 with with IN 36297 1275 16 some some DT 36297 1275 17 of of IN 36297 1275 18 the the DT 36297 1275 19 illusions illusion NNS 36297 1275 20 of of IN 36297 1275 21 contrast contrast NN 36297 1275 22 . . . 36297 1276 1 The the DT 36297 1276 2 fact fact NN 36297 1276 3 that that IN 36297 1276 4 practice practice NN 36297 1276 5 in in IN 36297 1276 6 making make VBG 36297 1276 7 judgments judgment NNS 36297 1276 8 in in IN 36297 1276 9 such such JJ 36297 1276 10 cases case NNS 36297 1276 11 as as IN 36297 1276 12 Figs fig NNS 36297 1276 13 . . . 36297 1277 1 45 45 CD 36297 1277 2 and and CC 36297 1277 3 56 56 CD 36297 1277 4 reduces reduce NNS 36297 1277 5 the the DT 36297 1277 6 illusion illusion NN 36297 1277 7 even even RB 36297 1277 8 to to TO 36297 1277 9 ultimate ultimate JJ 36297 1277 10 disappearance disappearance NN 36297 1277 11 , , , 36297 1277 12 argues argue VBZ 36297 1277 13 in in IN 36297 1277 14 favor favor NN 36297 1277 15 of of IN 36297 1277 16 the the DT 36297 1277 17 confusion confusion NN 36297 1277 18 theory theory NN 36297 1277 19 . . . 36297 1278 1 Perhaps perhaps RB 36297 1278 2 the the DT 36297 1278 3 observer observer NN 36297 1278 4 devotes devote VBZ 36297 1278 5 himself -PRON- PRP 36297 1278 6 more more RBR 36297 1278 7 or or CC 36297 1278 8 less less RBR 36297 1278 9 consciously consciously RB 36297 1278 10 to to IN 36297 1278 11 isolating isolate VBG 36297 1278 12 the the DT 36297 1278 13 particular particular JJ 36297 1278 14 feature feature NN 36297 1278 15 to to TO 36297 1278 16 be be VB 36297 1278 17 judged judge VBN 36297 1278 18 and and CC 36297 1278 19 finally finally RB 36297 1278 20 attains attain VBZ 36297 1278 21 the the DT 36297 1278 22 ability ability NN 36297 1278 23 to to TO 36297 1278 24 do do VB 36297 1278 25 so so RB 36297 1278 26 . . . 36297 1279 1 According accord VBG 36297 1279 2 to to IN 36297 1279 3 Auerbach Auerbach NNP 36297 1279 4 's 's POS 36297 1279 5 indirect indirect JJ 36297 1279 6 - - HYPH 36297 1279 7 vision vision NN 36297 1279 8 theory theory NN 36297 1279 9 the the DT 36297 1279 10 eyes eye NNS 36297 1279 11 in in IN 36297 1279 12 judging judge VBG 36297 1279 13 the the DT 36297 1279 14 two two CD 36297 1279 15 halves half NNS 36297 1279 16 of of IN 36297 1279 17 the the DT 36297 1279 18 horizontal horizontal JJ 36297 1279 19 line line NN 36297 1279 20 in in IN 36297 1279 21 _ _ NNP 36297 1279 22 a a DT 36297 1279 23 _ _ NNP 36297 1279 24 , , , 36297 1279 25 Fig Fig NNP 36297 1279 26 . . . 36297 1280 1 56 56 CD 36297 1280 2 , , , 36297 1280 3 involuntarily involuntarily RB 36297 1280 4 draw draw VBP 36297 1280 5 imaginary imaginary JJ 36297 1280 6 lines line NNS 36297 1280 7 parallel parallel JJ 36297 1280 8 to to IN 36297 1280 9 this this DT 36297 1280 10 line line NN 36297 1280 11 but but CC 36297 1280 12 above above IN 36297 1280 13 or or CC 36297 1280 14 below below IN 36297 1280 15 it -PRON- PRP 36297 1280 16 . . . 36297 1281 1 Obviously obviously RB 36297 1281 2 the the DT 36297 1281 3 two two CD 36297 1281 4 parts part NNS 36297 1281 5 of of IN 36297 1281 6 such such JJ 36297 1281 7 lines line NNS 36297 1281 8 are be VBP 36297 1281 9 unequal unequal JJ 36297 1281 10 in in IN 36297 1281 11 the the DT 36297 1281 12 same same JJ 36297 1281 13 manner manner NN 36297 1281 14 as as IN 36297 1281 15 the the DT 36297 1281 16 horizontal horizontal JJ 36297 1281 17 line line NN 36297 1281 18 in in IN 36297 1281 19 the the DT 36297 1281 20 Müller Müller NNP 36297 1281 21 - - HYPH 36297 1281 22 Lyer Lyer NNP 36297 1281 23 figure figure NN 36297 1281 24 appears appear VBZ 36297 1281 25 divided divide VBN 36297 1281 26 into into IN 36297 1281 27 two two CD 36297 1281 28 unequal unequal JJ 36297 1281 29 parts part NNS 36297 1281 30 . . . 36297 1282 1 Somewhat somewhat RB 36297 1282 2 analogous analogous JJ 36297 1282 3 to to IN 36297 1282 4 this this DT 36297 1282 5 in in IN 36297 1282 6 some some DT 36297 1282 7 cases case NNS 36297 1282 8 is be VBZ 36297 1282 9 Brunot Brunot NNP 36297 1282 10 's 's POS 36297 1282 11 mean mean JJ 36297 1282 12 - - HYPH 36297 1282 13 distance distance NN 36297 1282 14 theory theory NN 36297 1282 15 . . . 36297 1283 1 According accord VBG 36297 1283 2 to to IN 36297 1283 3 this this DT 36297 1283 4 we -PRON- PRP 36297 1283 5 establish establish VBP 36297 1283 6 " " '' 36297 1283 7 centers center NNS 36297 1283 8 of of IN 36297 1283 9 gravity gravity NN 36297 1283 10 " " '' 36297 1283 11 in in IN 36297 1283 12 figures figure NNS 36297 1283 13 and and CC 36297 1283 14 these these DT 36297 1283 15 influence influence VBP 36297 1283 16 our -PRON- PRP$ 36297 1283 17 judgments judgment NNS 36297 1283 18 . . . 36297 1284 1 These these DT 36297 1284 2 are be VBP 36297 1284 3 glimpses glimpse NNS 36297 1284 4 of of IN 36297 1284 5 certain certain JJ 36297 1284 6 trends trend NNS 36297 1284 7 of of IN 36297 1284 8 theories theory NNS 36297 1284 9 . . . 36297 1285 1 None none NN 36297 1285 2 is be VBZ 36297 1285 3 a a DT 36297 1285 4 complete complete JJ 36297 1285 5 success success NN 36297 1285 6 or or CC 36297 1285 7 failure failure NN 36297 1285 8 . . . 36297 1286 1 Each each DT 36297 1286 2 explains explain VBZ 36297 1286 3 some some DT 36297 1286 4 illusions illusion NNS 36297 1286 5 satisfactorily satisfactorily RB 36297 1286 6 , , , 36297 1286 7 but but CC 36297 1286 8 not not RB 36297 1286 9 necessarily necessarily RB 36297 1286 10 exclusively exclusively RB 36297 1286 11 . . . 36297 1287 1 For for IN 36297 1287 2 the the DT 36297 1287 3 present present NN 36297 1287 4 , , , 36297 1287 5 we -PRON- PRP 36297 1287 6 will will MD 36297 1287 7 be be VB 36297 1287 8 content content JJ 36297 1287 9 with with IN 36297 1287 10 these these DT 36297 1287 11 glimpses glimpse NNS 36297 1287 12 of of IN 36297 1287 13 the the DT 36297 1287 14 purely purely RB 36297 1287 15 theoretical theoretical JJ 36297 1287 16 aspects aspect NNS 36297 1287 17 of of IN 36297 1287 18 visual visual JJ 36297 1287 19 illusions illusion NNS 36297 1287 20 . . . 36297 1288 1 VII VII NNP 36297 1288 2 ILLUSIONS ILLUSIONS NNP 36297 1288 3 OF of IN 36297 1288 4 DEPTH depth NN 36297 1288 5 AND and CC 36297 1288 6 OF of IN 36297 1288 7 DISTANCE DISTANCE NNP 36297 1288 8 Besides besides IN 36297 1288 9 the the DT 36297 1288 10 so so RB 36297 1288 11 - - HYPH 36297 1288 12 called call VBN 36297 1288 13 geometrical geometrical JJ 36297 1288 14 illusions illusion NNS 36297 1288 15 discussed discuss VBN 36297 1288 16 in in IN 36297 1288 17 the the DT 36297 1288 18 preceding precede VBG 36297 1288 19 chapters chapter NNS 36297 1288 20 , , , 36297 1288 21 there there EX 36297 1288 22 is be VBZ 36297 1288 23 an an DT 36297 1288 24 interesting interesting JJ 36297 1288 25 group group NN 36297 1288 26 in in IN 36297 1288 27 which which WDT 36297 1288 28 the the DT 36297 1288 29 perception perception NN 36297 1288 30 of of IN 36297 1288 31 the the DT 36297 1288 32 third third JJ 36297 1288 33 dimension dimension NN 36297 1288 34 is be VBZ 36297 1288 35 in in IN 36297 1288 36 error error NN 36297 1288 37 . . . 36297 1289 1 When when WRB 36297 1289 2 any any DT 36297 1289 3 of of IN 36297 1289 4 the the DT 36297 1289 5 ordinary ordinary JJ 36297 1289 6 criteria criterion NNS 36297 1289 7 of of IN 36297 1289 8 relief relief NN 36297 1289 9 or or CC 36297 1289 10 of of IN 36297 1289 11 distance distance NN 36297 1289 12 are be VBP 36297 1289 13 apparently apparently RB 36297 1289 14 modified modify VBN 36297 1289 15 , , , 36297 1289 16 illusions illusion NNS 36297 1289 17 of of IN 36297 1289 18 this this DT 36297 1289 19 kind kind NN 36297 1289 20 are be VBP 36297 1289 21 possible possible JJ 36297 1289 22 . . . 36297 1290 1 There there EX 36297 1290 2 are be VBP 36297 1290 3 many many JJ 36297 1290 4 illusions illusion NNS 36297 1290 5 of of IN 36297 1290 6 this this DT 36297 1290 7 sort sort NN 36297 1290 8 , , , 36297 1290 9 such such JJ 36297 1290 10 as as IN 36297 1290 11 the the DT 36297 1290 12 looming looming NN 36297 1290 13 of of IN 36297 1290 14 objects object NNS 36297 1290 15 in in IN 36297 1290 16 a a DT 36297 1290 17 fog fog NN 36297 1290 18 ; ; : 36297 1290 19 the the DT 36297 1290 20 apparent apparent JJ 36297 1290 21 enlargement enlargement NN 36297 1290 22 of of IN 36297 1290 23 the the DT 36297 1290 24 sun sun NN 36297 1290 25 and and CC 36297 1290 26 moon moon NN 36297 1290 27 near near IN 36297 1290 28 the the DT 36297 1290 29 horizon horizon NN 36297 1290 30 ; ; : 36297 1290 31 the the DT 36297 1290 32 flattening flattening NN 36297 1290 33 of of IN 36297 1290 34 the the DT 36297 1290 35 " " `` 36297 1290 36 vault vault NN 36297 1290 37 " " '' 36297 1290 38 of of IN 36297 1290 39 the the DT 36297 1290 40 sky sky NN 36297 1290 41 ; ; : 36297 1290 42 the the DT 36297 1290 43 intaglio intaglio NN 36297 1290 44 seen see VBN 36297 1290 45 as as IN 36297 1290 46 relief relief NN 36297 1290 47 ; ; : 36297 1290 48 the the DT 36297 1290 49 alteration alteration NN 36297 1290 50 of of IN 36297 1290 51 relief relief NN 36297 1290 52 with with IN 36297 1290 53 lighting lighting NN 36297 1290 54 ; ; : 36297 1290 55 and and CC 36297 1290 56 various various JJ 36297 1290 57 changes change NNS 36297 1290 58 in in IN 36297 1290 59 the the DT 36297 1290 60 landscape landscape NN 36297 1290 61 when when WRB 36297 1290 62 regarded regard VBN 36297 1290 63 with with IN 36297 1290 64 the the DT 36297 1290 65 head head NN 36297 1290 66 inverted invert VBN 36297 1290 67 . . . 36297 1291 1 Although although IN 36297 1291 2 some some DT 36297 1291 3 of of IN 36297 1291 4 the the DT 36297 1291 5 criteria criterion NNS 36297 1291 6 for for IN 36297 1291 7 the the DT 36297 1291 8 perception perception NN 36297 1291 9 of of IN 36297 1291 10 depth depth NN 36297 1291 11 or or CC 36297 1291 12 of of IN 36297 1291 13 distance distance NN 36297 1291 14 have have VBP 36297 1291 15 already already RB 36297 1291 16 been be VBN 36297 1291 17 pointed point VBN 36297 1291 18 out out RP 36297 1291 19 , , , 36297 1291 20 especially especially RB 36297 1291 21 in in IN 36297 1291 22 Chapter Chapter NNP 36297 1291 23 III III NNP 36297 1291 24 , , , 36297 1291 25 these these DT 36297 1291 26 will will MD 36297 1291 27 be be VB 36297 1291 28 mentioned mention VBN 36297 1291 29 again again RB 36297 1291 30 . . . 36297 1292 1 Distance distance NN 36297 1292 2 or or CC 36297 1292 3 depth depth NN 36297 1292 4 is be VBZ 36297 1292 5 indicated indicate VBN 36297 1292 6 by by IN 36297 1292 7 the the DT 36297 1292 8 distribution distribution NN 36297 1292 9 of of IN 36297 1292 10 light light NN 36297 1292 11 and and CC 36297 1292 12 shade shade NN 36297 1292 13 , , , 36297 1292 14 and and CC 36297 1292 15 an an DT 36297 1292 16 unusual unusual JJ 36297 1292 17 object object NN 36297 1292 18 like like IN 36297 1292 19 an an DT 36297 1292 20 intaglio intaglio NN 36297 1292 21 is be VBZ 36297 1292 22 likely likely JJ 36297 1292 23 to to TO 36297 1292 24 be be VB 36297 1292 25 mistaken mistake VBN 36297 1292 26 for for IN 36297 1292 27 relief relief NN 36297 1292 28 which which WDT 36297 1292 29 is be VBZ 36297 1292 30 more more RBR 36297 1292 31 common common JJ 36297 1292 32 . . . 36297 1293 1 An an DT 36297 1293 2 analysis analysis NN 36297 1293 3 of of IN 36297 1293 4 the the DT 36297 1293 5 lighting lighting NN 36297 1293 6 will will MD 36297 1293 7 usually usually RB 36297 1293 8 reveal reveal VB 36297 1293 9 the the DT 36297 1293 10 real real JJ 36297 1293 11 form form NN 36297 1293 12 of of IN 36297 1293 13 the the DT 36297 1293 14 object object NN 36297 1293 15 . . . 36297 1294 1 ( ( -LRB- 36297 1294 2 See see VB 36297 1294 3 Figs fig NNS 36297 1294 4 . . . 36297 1295 1 70 70 CD 36297 1295 2 , , , 36297 1295 3 71 71 CD 36297 1295 4 , , , 36297 1295 5 72 72 CD 36297 1295 6 , , , 36297 1295 7 73 73 CD 36297 1295 8 , , , 36297 1295 9 76 76 CD 36297 1295 10 and and CC 36297 1295 11 77 77 CD 36297 1295 12 . . . 36297 1295 13 ) ) -RRB- 36297 1296 1 In in IN 36297 1296 2 this this DT 36297 1296 3 connection connection NN 36297 1296 4 it -PRON- PRP 36297 1296 5 is be VBZ 36297 1296 6 interesting interesting JJ 36297 1296 7 to to TO 36297 1296 8 compare compare VB 36297 1296 9 photographic photographic JJ 36297 1296 10 negatives negative NNS 36297 1296 11 with with IN 36297 1296 12 their -PRON- PRP$ 36297 1296 13 corresponding correspond VBG 36297 1296 14 positive positive JJ 36297 1296 15 prints print NNS 36297 1296 16 . . . 36297 1297 1 Distance distance NN 36297 1297 2 is be VBZ 36297 1297 3 often often RB 36297 1297 4 estimated estimate VBN 36297 1297 5 by by IN 36297 1297 6 the the DT 36297 1297 7 definition definition NN 36297 1297 8 and and CC 36297 1297 9 color color NN 36297 1297 10 of of IN 36297 1297 11 objects object NNS 36297 1297 12 seen see VBN 36297 1297 13 through through IN 36297 1297 14 great great JJ 36297 1297 15 depths depth NNS 36297 1297 16 of of IN 36297 1297 17 air air NN 36297 1297 18 ( ( -LRB- 36297 1297 19 aerial aerial JJ 36297 1297 20 perspective perspective NN 36297 1297 21 ) ) -RRB- 36297 1297 22 . . . 36297 1298 1 These these DT 36297 1298 2 distant distant JJ 36297 1298 3 objects object NNS 36297 1298 4 are be VBP 36297 1298 5 " " `` 36297 1298 6 blurred blur VBN 36297 1298 7 " " '' 36297 1298 8 by by IN 36297 1298 9 the the DT 36297 1298 10 irregular irregular JJ 36297 1298 11 refraction refraction NN 36297 1298 12 of of IN 36297 1298 13 the the DT 36297 1298 14 light light NN 36297 1298 15 - - : 36297 1298 16 rays ray NNS 36297 1298 17 through through IN 36297 1298 18 non non JJ 36297 1298 19 - - JJ 36297 1298 20 homogeneous homogeneous JJ 36297 1298 21 atmosphere atmosphere NN 36297 1298 22 . . . 36297 1299 1 They -PRON- PRP 36297 1299 2 are be VBP 36297 1299 3 obscured obscure VBN 36297 1299 4 to to IN 36297 1299 5 some some DT 36297 1299 6 degree degree NN 36297 1299 7 by by IN 36297 1299 8 the the DT 36297 1299 9 veil veil NN 36297 1299 10 of of IN 36297 1299 11 brightness brightness NN 36297 1299 12 due due IN 36297 1299 13 to to IN 36297 1299 14 the the DT 36297 1299 15 illuminated illuminate VBN 36297 1299 16 dust dust NN 36297 1299 17 , , , 36297 1299 18 smoke smoke NN 36297 1299 19 , , , 36297 1299 20 etc etc FW 36297 1299 21 . . FW 36297 1299 22 , , , 36297 1299 23 in in IN 36297 1299 24 the the DT 36297 1299 25 atmosphere atmosphere NN 36297 1299 26 . . . 36297 1300 1 They -PRON- PRP 36297 1300 2 are be VBP 36297 1300 3 also also RB 36297 1300 4 tinted tint VBN 36297 1300 5 ( ( -LRB- 36297 1300 6 apparently apparently RB 36297 1300 7 ) ) -RRB- 36297 1300 8 by by IN 36297 1300 9 the the DT 36297 1300 10 superposition superposition NN 36297 1300 11 of of IN 36297 1300 12 a a DT 36297 1300 13 tinted tint VBN 36297 1300 14 atmosphere atmosphere NN 36297 1300 15 . . . 36297 1301 1 Thus thus RB 36297 1301 2 we -PRON- PRP 36297 1301 3 have have VBP 36297 1301 4 " " `` 36297 1301 5 dim dim JJ 36297 1301 6 distance distance NN 36297 1301 7 , , , 36297 1301 8 " " '' 36297 1301 9 " " `` 36297 1301 10 blue blue JJ 36297 1301 11 peaks peak NNS 36297 1301 12 , , , 36297 1301 13 " " '' 36297 1301 14 " " `` 36297 1301 15 azure azure JJ 36297 1301 16 depths depth NNS 36297 1301 17 of of IN 36297 1301 18 sky sky NN 36297 1301 19 , , , 36297 1301 20 " " '' 36297 1301 21 etc etc FW 36297 1301 22 . . . 36297 1301 23 , , , 36297 1301 24 represented represent VBN 36297 1301 25 in in IN 36297 1301 26 photographs photograph NNS 36297 1301 27 , , , 36297 1301 28 paintings painting NNS 36297 1301 29 , , , 36297 1301 30 and and CC 36297 1301 31 writings writing NNS 36297 1301 32 . . . 36297 1302 1 Incidentally incidentally RB 36297 1302 2 , , , 36297 1302 3 the the DT 36297 1302 4 sky sky NN 36297 1302 5 above above RB 36297 1302 6 is be VBZ 36297 1302 7 blue blue JJ 36297 1302 8 for for IN 36297 1302 9 the the DT 36297 1302 10 same same JJ 36297 1302 11 general general JJ 36297 1302 12 reasons reason NNS 36297 1302 13 that that WDT 36297 1302 14 the the DT 36297 1302 15 atmosphere atmosphere NN 36297 1302 16 , , , 36297 1302 17 intervening intervene VBG 36297 1302 18 between between IN 36297 1302 19 the the DT 36297 1302 20 observer observer NN 36297 1302 21 and and CC 36297 1302 22 a a DT 36297 1302 23 distant distant JJ 36297 1302 24 horizon horizon NN 36297 1302 25 , , , 36297 1302 26 is be VBZ 36297 1302 27 bluish bluish JJ 36297 1302 28 . . . 36297 1303 1 The the DT 36297 1303 2 ludicrous ludicrous JJ 36297 1303 3 errors error NNS 36297 1303 4 made make VBN 36297 1303 5 in in IN 36297 1303 6 estimating estimate VBG 36297 1303 7 distances distance NNS 36297 1303 8 in in IN 36297 1303 9 such such JJ 36297 1303 10 regions region NNS 36297 1303 11 as as IN 36297 1303 12 the the DT 36297 1303 13 Rockies Rockies NNPS 36297 1303 14 is be VBZ 36297 1303 15 usually usually RB 36297 1303 16 accounted account VBN 36297 1303 17 for for IN 36297 1303 18 by by IN 36297 1303 19 the the DT 36297 1303 20 rare rare JJ 36297 1303 21 clearness clearness NN 36297 1303 22 and and CC 36297 1303 23 homogeneity homogeneity NN 36297 1303 24 of of IN 36297 1303 25 the the DT 36297 1303 26 atmosphere atmosphere NN 36297 1303 27 . . . 36297 1304 1 However however RB 36297 1304 2 , , , 36297 1304 3 is be VBZ 36297 1304 4 the the DT 36297 1304 5 latter latter JJ 36297 1304 6 a a DT 36297 1304 7 full full JJ 36297 1304 8 explanation explanation NN 36297 1304 9 ? ? . 36297 1305 1 To to IN 36297 1305 2 some some DT 36297 1305 3 extent extent NN 36297 1305 4 we -PRON- PRP 36297 1305 5 judge judge VBP 36297 1305 6 unknown unknown JJ 36297 1305 7 size size NN 36297 1305 8 by by IN 36297 1305 9 estimated estimate VBN 36297 1305 10 distance distance NN 36297 1305 11 , , , 36297 1305 12 and and CC 36297 1305 13 unknown unknown JJ 36297 1305 14 distance distance NN 36297 1305 15 by by IN 36297 1305 16 estimated estimate VBN 36297 1305 17 size size NN 36297 1305 18 . . . 36297 1306 1 When when WRB 36297 1306 2 a a DT 36297 1306 3 person person NN 36297 1306 4 is be VBZ 36297 1306 5 viewing view VBG 36297 1306 6 a a DT 36297 1306 7 great great JJ 36297 1306 8 mountain mountain NN 36297 1306 9 peak peak NN 36297 1306 10 for for IN 36297 1306 11 the the DT 36297 1306 12 first first JJ 36297 1306 13 time time NN 36297 1306 14 , , , 36297 1306 15 is be VBZ 36297 1306 16 he -PRON- PRP 36297 1306 17 not not RB 36297 1306 18 likely likely JJ 36297 1306 19 to to TO 36297 1306 20 assume assume VB 36297 1306 21 it -PRON- PRP 36297 1306 22 to to TO 36297 1306 23 be be VB 36297 1306 24 comparable comparable JJ 36297 1306 25 in in IN 36297 1306 26 size size NN 36297 1306 27 to to IN 36297 1306 28 the the DT 36297 1306 29 hills hill NNS 36297 1306 30 with with IN 36297 1306 31 which which WDT 36297 1306 32 he -PRON- PRP 36297 1306 33 has have VBZ 36297 1306 34 been be VBN 36297 1306 35 familiar familiar JJ 36297 1306 36 ? ? . 36297 1307 1 Even even RB 36297 1307 2 by by IN 36297 1307 3 allowing allow VBG 36297 1307 4 considerable considerable NN 36297 1307 5 , , , 36297 1307 6 is be VBZ 36297 1307 7 he -PRON- PRP 36297 1307 8 not not RB 36297 1307 9 likely likely JJ 36297 1307 10 to to TO 36297 1307 11 greatly greatly RB 36297 1307 12 underestimate underestimate VB 36297 1307 13 the the DT 36297 1307 14 size size NN 36297 1307 15 of of IN 36297 1307 16 the the DT 36297 1307 17 mountain mountain NN 36297 1307 18 and and CC 36297 1307 19 , , , 36297 1307 20 as as IN 36297 1307 21 a a DT 36297 1307 22 direct direct JJ 36297 1307 23 consequence consequence NN 36297 1307 24 , , , 36297 1307 25 to to TO 36297 1307 26 underestimate underestimate VB 36297 1307 27 the the DT 36297 1307 28 distance distance NN 36297 1307 29 proportionately proportionately RB 36297 1307 30 ? ? . 36297 1308 1 This this DT 36297 1308 2 incorrect incorrect JJ 36297 1308 3 judgment judgment NN 36297 1308 4 would would MD 36297 1308 5 naturally naturally RB 36297 1308 6 be be VB 36297 1308 7 facilitated facilitate VBN 36297 1308 8 by by IN 36297 1308 9 the the DT 36297 1308 10 absence absence NN 36297 1308 11 of of IN 36297 1308 12 " " `` 36297 1308 13 dimness dimness NN 36297 1308 14 " " '' 36297 1308 15 and and CC 36297 1308 16 " " `` 36297 1308 17 blueness blueness NN 36297 1308 18 " " '' 36297 1308 19 due due IN 36297 1308 20 to to IN 36297 1308 21 the the DT 36297 1308 22 atmospheric atmospheric JJ 36297 1308 23 haze haze NN 36297 1308 24 . . . 36297 1309 1 Angular angular JJ 36297 1309 2 perspective perspective NN 36297 1309 3 , , , 36297 1309 4 which which WDT 36297 1309 5 apparently apparently RB 36297 1309 6 varies vary VBZ 36297 1309 7 the the DT 36297 1309 8 forms form NNS 36297 1309 9 of of IN 36297 1309 10 angles angle NNS 36297 1309 11 and and CC 36297 1309 12 produces produce VBZ 36297 1309 13 the the DT 36297 1309 14 divergence divergence NN 36297 1309 15 of of IN 36297 1309 16 lines line NNS 36297 1309 17 , , , 36297 1309 18 contributes contribute VBZ 36297 1309 19 much much JJ 36297 1309 20 information information NN 36297 1309 21 in in IN 36297 1309 22 regard regard NN 36297 1309 23 to to IN 36297 1309 24 relative relative JJ 36297 1309 25 and and CC 36297 1309 26 absolute absolute JJ 36297 1309 27 distances distance NNS 36297 1309 28 from from IN 36297 1309 29 the the DT 36297 1309 30 eye eye NN 36297 1309 31 of of IN 36297 1309 32 the the DT 36297 1309 33 various various JJ 36297 1309 34 objects object NNS 36297 1309 35 or or CC 36297 1309 36 the the DT 36297 1309 37 parts part NNS 36297 1309 38 of of IN 36297 1309 39 an an DT 36297 1309 40 object object NN 36297 1309 41 . . . 36297 1310 1 For for IN 36297 1310 2 example example NN 36297 1310 3 , , , 36297 1310 4 a a DT 36297 1310 5 rectangle rectangle NN 36297 1310 6 may may MD 36297 1310 7 appear appear VB 36297 1310 8 as as IN 36297 1310 9 a a DT 36297 1310 10 rhomboid rhomboid NN 36297 1310 11 . . . 36297 1311 1 It -PRON- PRP 36297 1311 2 is be VBZ 36297 1311 3 obvious obvious JJ 36297 1311 4 that that IN 36297 1311 5 certain certain JJ 36297 1311 6 data datum NNS 36297 1311 7 pertaining pertain VBG 36297 1311 8 to to IN 36297 1311 9 the the DT 36297 1311 10 objects object NNS 36297 1311 11 viewed view VBN 36297 1311 12 must must MD 36297 1311 13 be be VB 36297 1311 14 assumed assume VBN 36297 1311 15 , , , 36297 1311 16 and and CC 36297 1311 17 if if IN 36297 1311 18 the the DT 36297 1311 19 assumptions assumption NNS 36297 1311 20 are be VBP 36297 1311 21 incorrect incorrect JJ 36297 1311 22 , , , 36297 1311 23 illusions illusion NNS 36297 1311 24 will will MD 36297 1311 25 result result VB 36297 1311 26 . . . 36297 1312 1 These these DT 36297 1312 2 judgments judgment NNS 36297 1312 3 also also RB 36297 1312 4 involve involve VBP 36297 1312 5 , , , 36297 1312 6 as as IN 36297 1312 7 most most JJS 36297 1312 8 judgments judgment NNS 36297 1312 9 do do VBP 36297 1312 10 , , , 36297 1312 11 other other JJ 36297 1312 12 data datum NNS 36297 1312 13 external external JJ 36297 1312 14 to to IN 36297 1312 15 the the DT 36297 1312 16 objects object NNS 36297 1312 17 viewed view VBN 36297 1312 18 . . . 36297 1313 1 Perhaps perhaps RB 36297 1313 2 these these DT 36297 1313 3 incorrect incorrect JJ 36297 1313 4 judgments judgment NNS 36297 1313 5 are be VBP 36297 1313 6 delusions delusion NNS 36297 1313 7 rather rather RB 36297 1313 8 than than IN 36297 1313 9 illusions illusion NNS 36297 1313 10 , , , 36297 1313 11 because because IN 36297 1313 12 visual visual JJ 36297 1313 13 perception perception NN 36297 1313 14 has have VBZ 36297 1313 15 been be VBN 36297 1313 16 deluded delude VBN 36297 1313 17 by by IN 36297 1313 18 misinformation misinformation NN 36297 1313 19 supplied supply VBN 36297 1313 20 by by IN 36297 1313 21 the the DT 36297 1313 22 intellect intellect NN 36297 1313 23 . . . 36297 1314 1 Size size NN 36297 1314 2 or or CC 36297 1314 3 linear linear JJ 36297 1314 4 perspective perspective NN 36297 1314 5 is be VBZ 36297 1314 6 a a DT 36297 1314 7 factor factor NN 36297 1314 8 in in IN 36297 1314 9 the the DT 36297 1314 10 perception perception NN 36297 1314 11 of of IN 36297 1314 12 depth depth NN 36297 1314 13 or or CC 36297 1314 14 of of IN 36297 1314 15 distance distance NN 36297 1314 16 . . . 36297 1315 1 As as IN 36297 1315 2 has have VBZ 36297 1315 3 been be VBN 36297 1315 4 stated state VBN 36297 1315 5 , , , 36297 1315 6 if if IN 36297 1315 7 we -PRON- PRP 36297 1315 8 know know VBP 36297 1315 9 the the DT 36297 1315 10 size size NN 36297 1315 11 experience experience NN 36297 1315 12 determines determine VBZ 36297 1315 13 the the DT 36297 1315 14 distance distance NN 36297 1315 15 ; ; : 36297 1315 16 and and CC 36297 1315 17 conversely conversely RB 36297 1315 18 , , , 36297 1315 19 if if IN 36297 1315 20 we -PRON- PRP 36297 1315 21 know know VBP 36297 1315 22 the the DT 36297 1315 23 distance distance NN 36297 1315 24 we -PRON- PRP 36297 1315 25 may may MD 36297 1315 26 estimate estimate VB 36297 1315 27 the the DT 36297 1315 28 size size NN 36297 1315 29 . . . 36297 1316 1 Obviously obviously RB 36297 1316 2 estimates estimate NNS 36297 1316 3 are be VBP 36297 1316 4 involved involve VBN 36297 1316 5 and and CC 36297 1316 6 these these DT 36297 1316 7 when when WRB 36297 1316 8 incorrect incorrect JJ 36297 1316 9 lead lead NN 36297 1316 10 to to IN 36297 1316 11 false false JJ 36297 1316 12 perception perception NN 36297 1316 13 or or CC 36297 1316 14 interpretation interpretation NN 36297 1316 15 . . . 36297 1317 1 As as IN 36297 1317 2 an an DT 36297 1317 3 object object NN 36297 1317 4 approaches approach VBZ 36297 1317 5 , , , 36297 1317 6 the the DT 36297 1317 7 axes axis NNS 36297 1317 8 of of IN 36297 1317 9 the the DT 36297 1317 10 eyes eye NNS 36297 1317 11 converge converge VBP 36297 1317 12 more more RBR 36297 1317 13 and and CC 36297 1317 14 more more RBR 36297 1317 15 and and CC 36297 1317 16 the the DT 36297 1317 17 eye eye NN 36297 1317 18 - - HYPH 36297 1317 19 lens lens NN 36297 1317 20 must must MD 36297 1317 21 be be VB 36297 1317 22 thickened thicken VBN 36297 1317 23 more more RBR 36297 1317 24 and and CC 36297 1317 25 more more JJR 36297 1317 26 to to TO 36297 1317 27 keep keep VB 36297 1317 28 the the DT 36297 1317 29 object object NN 36297 1317 30 in in IN 36297 1317 31 focus focus NN 36297 1317 32 . . . 36297 1318 1 As as IN 36297 1318 2 stated state VBN 36297 1318 3 in in IN 36297 1318 4 Chapter Chapter NNP 36297 1318 5 III III NNP 36297 1318 6 , , , 36297 1318 7 we -PRON- PRP 36297 1318 8 have have VBP 36297 1318 9 learned learn VBN 36297 1318 10 to to TO 36297 1318 11 interpret interpret VB 36297 1318 12 these these DT 36297 1318 13 accompanying accompany VBG 36297 1318 14 sensations sensation NNS 36297 1318 15 of of IN 36297 1318 16 muscular muscular JJ 36297 1318 17 adjustment adjustment NN 36297 1318 18 . . . 36297 1319 1 This this DT 36297 1319 2 may may MD 36297 1319 3 be be VB 36297 1319 4 demonstrated demonstrate VBN 36297 1319 5 by by IN 36297 1319 6 holding hold VBG 36297 1319 7 an an DT 36297 1319 8 object object NN 36297 1319 9 at at IN 36297 1319 10 an an DT 36297 1319 11 arm arm NN 36297 1319 12 's 's POS 36297 1319 13 length length NN 36297 1319 14 and and CC 36297 1319 15 then then RB 36297 1319 16 bringing bring VBG 36297 1319 17 it -PRON- PRP 36297 1319 18 rapidly rapidly RB 36297 1319 19 toward toward IN 36297 1319 20 the the DT 36297 1319 21 eyes eye NNS 36297 1319 22 , , , 36297 1319 23 keeping keep VBG 36297 1319 24 it -PRON- PRP 36297 1319 25 in in IN 36297 1319 26 focus focus NN 36297 1319 27 all all PDT 36297 1319 28 the the DT 36297 1319 29 time time NN 36297 1319 30 . . . 36297 1320 1 The the DT 36297 1320 2 sensations sensation NNS 36297 1320 3 of of IN 36297 1320 4 convergence convergence NN 36297 1320 5 and and CC 36297 1320 6 accommodation accommodation NN 36297 1320 7 are be VBP 36297 1320 8 quite quite RB 36297 1320 9 intense intense JJ 36297 1320 10 . . . 36297 1321 1 The the DT 36297 1321 2 two two CD 36297 1321 3 eyes eye NNS 36297 1321 4 look look VBP 36297 1321 5 at at IN 36297 1321 6 a a DT 36297 1321 7 scene scene NN 36297 1321 8 from from IN 36297 1321 9 two two CD 36297 1321 10 different different JJ 36297 1321 11 points point NNS 36297 1321 12 of of IN 36297 1321 13 view view NN 36297 1321 14 respectively respectively RB 36297 1321 15 and and CC 36297 1321 16 their -PRON- PRP$ 36297 1321 17 images image NNS 36297 1321 18 do do VBP 36297 1321 19 not not RB 36297 1321 20 perfectly perfectly RB 36297 1321 21 agree agree VB 36297 1321 22 , , , 36297 1321 23 as as IN 36297 1321 24 has have VBZ 36297 1321 25 been be VBN 36297 1321 26 shown show VBN 36297 1321 27 in in IN 36297 1321 28 Figs Figs NNP 36297 1321 29 . . . 36297 1322 1 2 2 CD 36297 1322 2 and and CC 36297 1322 3 3 3 CD 36297 1322 4 . . . 36297 1323 1 This this DT 36297 1323 2 binocular binocular JJ 36297 1323 3 disparity disparity NN 36297 1323 4 is be VBZ 36297 1323 5 responsible responsible JJ 36297 1323 6 to to IN 36297 1323 7 some some DT 36297 1323 8 degree degree NN 36297 1323 9 for for IN 36297 1323 10 the the DT 36297 1323 11 perception perception NN 36297 1323 12 of of IN 36297 1323 13 depth depth NN 36297 1323 14 , , , 36297 1323 15 as as IN 36297 1323 16 the the DT 36297 1323 17 stereoscope stereoscope NN 36297 1323 18 has have VBZ 36297 1323 19 demonstrated demonstrate VBN 36297 1323 20 . . . 36297 1324 1 If if IN 36297 1324 2 two two CD 36297 1324 3 spheres sphere NNS 36297 1324 4 of of IN 36297 1324 5 the the DT 36297 1324 6 same same JJ 36297 1324 7 size size NN 36297 1324 8 are be VBP 36297 1324 9 suspended suspend VBN 36297 1324 10 on on IN 36297 1324 11 invisible invisible JJ 36297 1324 12 strings string NNS 36297 1324 13 , , , 36297 1324 14 one one CD 36297 1324 15 at at IN 36297 1324 16 six six CD 36297 1324 17 feet foot NNS 36297 1324 18 , , , 36297 1324 19 the the DT 36297 1324 20 other other JJ 36297 1324 21 at at IN 36297 1324 22 seven seven CD 36297 1324 23 feet foot NNS 36297 1324 24 away away RB 36297 1324 25 , , , 36297 1324 26 one one CD 36297 1324 27 eye eye NN 36297 1324 28 sees see VBZ 36297 1324 29 the the DT 36297 1324 30 two two CD 36297 1324 31 balls ball NNS 36297 1324 32 in in IN 36297 1324 33 the the DT 36297 1324 34 same same JJ 36297 1324 35 plane plane NN 36297 1324 36 , , , 36297 1324 37 but but CC 36297 1324 38 one one NN 36297 1324 39 appears appear VBZ 36297 1324 40 larger large JJR 36297 1324 41 than than IN 36297 1324 42 the the DT 36297 1324 43 other other JJ 36297 1324 44 . . . 36297 1325 1 With with IN 36297 1325 2 binocular binocular JJ 36297 1325 3 vision vision NN 36297 1325 4 the the DT 36297 1325 5 balls ball NNS 36297 1325 6 appear appear VBP 36297 1325 7 at at IN 36297 1325 8 different different JJ 36297 1325 9 distances distance NNS 36297 1325 10 , , , 36297 1325 11 but but CC 36297 1325 12 judgment judgment NN 36297 1325 13 appraises appraise VBZ 36297 1325 14 them -PRON- PRP 36297 1325 15 as as IN 36297 1325 16 of of IN 36297 1325 17 approximately approximately RB 36297 1325 18 equal equal JJ 36297 1325 19 size size NN 36297 1325 20 . . . 36297 1326 1 At at IN 36297 1326 2 that that DT 36297 1326 3 distance distance NN 36297 1326 4 the the DT 36297 1326 5 focal focal JJ 36297 1326 6 adjustment adjustment NN 36297 1326 7 is be VBZ 36297 1326 8 not not RB 36297 1326 9 much much RB 36297 1326 10 different different JJ 36297 1326 11 for for IN 36297 1326 12 both both DT 36297 1326 13 balls ball NNS 36297 1326 14 , , , 36297 1326 15 so so IN 36297 1326 16 that that IN 36297 1326 17 the the DT 36297 1326 18 muscular muscular JJ 36297 1326 19 movement movement NN 36297 1326 20 , , , 36297 1326 21 due due JJ 36297 1326 22 to to IN 36297 1326 23 focusing focus VBG 36297 1326 24 the the DT 36297 1326 25 eye eye NN 36297 1326 26 , , , 36297 1326 27 plays play VBZ 36297 1326 28 a a DT 36297 1326 29 small small JJ 36297 1326 30 part part NN 36297 1326 31 in in IN 36297 1326 32 the the DT 36297 1326 33 estimation estimation NN 36297 1326 34 of of IN 36297 1326 35 the the DT 36297 1326 36 relative relative JJ 36297 1326 37 distance distance NN 36297 1326 38 . . . 36297 1327 1 Binocular binocular JJ 36297 1327 2 disparity disparity NN 36297 1327 3 and and CC 36297 1327 4 convergence convergence NN 36297 1327 5 are be VBP 36297 1327 6 the the DT 36297 1327 7 primary primary JJ 36297 1327 8 factors factor NNS 36297 1327 9 . . . 36297 1328 1 Some some DT 36297 1328 2 have have VBP 36297 1328 3 held hold VBN 36297 1328 4 that that IN 36297 1328 5 the the DT 36297 1328 6 perception perception NN 36297 1328 7 of of IN 36297 1328 8 depth depth NN 36297 1328 9 , , , 36297 1328 10 that that RB 36297 1328 11 is is RB 36297 1328 12 , , , 36297 1328 13 of of IN 36297 1328 14 a a DT 36297 1328 15 relative relative JJ 36297 1328 16 distance distance NN 36297 1328 17 , , , 36297 1328 18 arises arise VBZ 36297 1328 19 from from IN 36297 1328 20 the the DT 36297 1328 21 process process NN 36297 1328 22 of of IN 36297 1328 23 unconsciously unconsciously RB 36297 1328 24 running run VBG 36297 1328 25 the the DT 36297 1328 26 point point NN 36297 1328 27 of of IN 36297 1328 28 sight sight NN 36297 1328 29 back back RB 36297 1328 30 and and CC 36297 1328 31 forth forth RB 36297 1328 32 . . . 36297 1329 1 However however RB 36297 1329 2 , , , 36297 1329 3 this this DT 36297 1329 4 view view NN 36297 1329 5 , , , 36297 1329 6 unmodified unmodified JJ 36297 1329 7 , , , 36297 1329 8 appears appear VBZ 36297 1329 9 untenable untenable JJ 36297 1329 10 when when WRB 36297 1329 11 it -PRON- PRP 36297 1329 12 is be VBZ 36297 1329 13 considered consider VBN 36297 1329 14 that that IN 36297 1329 15 a a DT 36297 1329 16 scene scene NN 36297 1329 17 illuminated illuminate VBN 36297 1329 18 by by IN 36297 1329 19 a a DT 36297 1329 20 lightning lightning NN 36297 1329 21 flash flash NN 36297 1329 22 ( ( -LRB- 36297 1329 23 of of IN 36297 1329 24 the the DT 36297 1329 25 order order NN 36297 1329 26 of of IN 36297 1329 27 magnitude magnitude NN 36297 1329 28 of of IN 36297 1329 29 a a DT 36297 1329 30 thousandth thousandth NN 36297 1329 31 of of IN 36297 1329 32 a a DT 36297 1329 33 second second NN 36297 1329 34 ) ) -RRB- 36297 1329 35 is be VBZ 36297 1329 36 seen see VBN 36297 1329 37 even even RB 36297 1329 38 in in IN 36297 1329 39 this this DT 36297 1329 40 brief brief JJ 36297 1329 41 moment moment NN 36297 1329 42 to to TO 36297 1329 43 have have VB 36297 1329 44 depth depth NN 36297 1329 45 . . . 36297 1330 1 Objects object NNS 36297 1330 2 are be VBP 36297 1330 3 seen see VBN 36297 1330 4 in in IN 36297 1330 5 relief relief NN 36297 1330 6 , , , 36297 1330 7 in in IN 36297 1330 8 actual actual JJ 36297 1330 9 relation relation NN 36297 1330 10 as as IN 36297 1330 11 to to IN 36297 1330 12 distance distance NN 36297 1330 13 and and CC 36297 1330 14 in in IN 36297 1330 15 normal normal JJ 36297 1330 16 perspective perspective NN 36297 1330 17 , , , 36297 1330 18 even even RB 36297 1330 19 under under IN 36297 1330 20 the the DT 36297 1330 21 extremely extremely RB 36297 1330 22 brief brief JJ 36297 1330 23 illumination illumination NN 36297 1330 24 of of IN 36297 1330 25 an an DT 36297 1330 26 electric electric JJ 36297 1330 27 spark spark NN 36297 1330 28 ( ( -LRB- 36297 1330 29 of of IN 36297 1330 30 the the DT 36297 1330 31 order order NN 36297 1330 32 of of IN 36297 1330 33 magnitude magnitude NN 36297 1330 34 of of IN 36297 1330 35 one one CD 36297 1330 36 twenty twenty CD 36297 1330 37 - - HYPH 36297 1330 38 thousandth thousandth NN 36297 1330 39 of of IN 36297 1330 40 a a DT 36297 1330 41 second second JJ 36297 1330 42 ) ) -RRB- 36297 1330 43 . . . 36297 1331 1 This this DT 36297 1331 2 can can MD 36297 1331 3 also also RB 36297 1331 4 be be VB 36297 1331 5 demonstrated demonstrate VBN 36297 1331 6 by by IN 36297 1331 7 viewing view VBG 36297 1331 8 stereoscopic stereoscopic JJ 36297 1331 9 pictures picture NNS 36297 1331 10 with with IN 36297 1331 11 a a DT 36297 1331 12 stereoscope stereoscope NN 36297 1331 13 , , , 36297 1331 14 the the DT 36297 1331 15 illumination illumination NN 36297 1331 16 being be VBG 36297 1331 17 furnished furnish VBN 36297 1331 18 by by IN 36297 1331 19 an an DT 36297 1331 20 electric electric JJ 36297 1331 21 spark spark NN 36297 1331 22 . . . 36297 1332 1 Under under IN 36297 1332 2 these these DT 36297 1332 3 circumstances circumstance NNS 36297 1332 4 relief relief NN 36297 1332 5 and and CC 36297 1332 6 perspective perspective NN 36297 1332 7 are be VBP 36297 1332 8 quite quite RB 36297 1332 9 satisfactory satisfactory JJ 36297 1332 10 . . . 36297 1333 1 Surely surely RB 36297 1333 2 in in IN 36297 1333 3 these these DT 36297 1333 4 brief brief JJ 36297 1333 5 intervals interval NNS 36297 1333 6 the the DT 36297 1333 7 point point NN 36297 1333 8 of of IN 36297 1333 9 sight sight NN 36297 1333 10 can can MD 36297 1333 11 not not RB 36297 1333 12 do do VB 36297 1333 13 much much JJ 36297 1333 14 surveying surveying NN 36297 1333 15 of of IN 36297 1333 16 a a DT 36297 1333 17 scene scene NN 36297 1333 18 . . . 36297 1334 1 Parallax Parallax NNP 36297 1334 2 aids aid NNS 36297 1334 3 in in IN 36297 1334 4 the the DT 36297 1334 5 perception perception NN 36297 1334 6 of of IN 36297 1334 7 depth depth NN 36297 1334 8 or or CC 36297 1334 9 distance distance NN 36297 1334 10 . . . 36297 1335 1 If if IN 36297 1335 2 the the DT 36297 1335 3 head head NN 36297 1335 4 be be VB 36297 1335 5 moved move VBN 36297 1335 6 laterally laterally RB 36297 1335 7 the the DT 36297 1335 8 view view NN 36297 1335 9 or or CC 36297 1335 10 scene scene NN 36297 1335 11 changes change NNS 36297 1335 12 slightly slightly RB 36297 1335 13 . . . 36297 1336 1 Objects object NNS 36297 1336 2 or or CC 36297 1336 3 portions portion NNS 36297 1336 4 of of IN 36297 1336 5 objects object NNS 36297 1336 6 previously previously RB 36297 1336 7 hidden hide VBN 36297 1336 8 by by IN 36297 1336 9 others other NNS 36297 1336 10 may may MD 36297 1336 11 now now RB 36297 1336 12 become become VB 36297 1336 13 visible visible JJ 36297 1336 14 . . . 36297 1337 1 Objects object NNS 36297 1337 2 at at IN 36297 1337 3 various various JJ 36297 1337 4 distances distance NNS 36297 1337 5 appear appear VBP 36297 1337 6 to to TO 36297 1337 7 move move VB 36297 1337 8 nearer nearer RB 36297 1337 9 or or CC 36297 1337 10 further far RBR 36297 1337 11 apart apart RB 36297 1337 12 . . . 36297 1338 1 We -PRON- PRP 36297 1338 2 have have VBP 36297 1338 3 come come VBN 36297 1338 4 to to TO 36297 1338 5 interpret interpret VB 36297 1338 6 these these DT 36297 1338 7 apparent apparent JJ 36297 1338 8 movements movement NNS 36297 1338 9 of of IN 36297 1338 10 objects object NNS 36297 1338 11 in in IN 36297 1338 12 a a DT 36297 1338 13 scene scene NN 36297 1338 14 in in IN 36297 1338 15 terms term NNS 36297 1338 16 of of IN 36297 1338 17 relative relative JJ 36297 1338 18 distances distance NNS 36297 1338 19 ; ; : 36297 1338 20 that that RB 36297 1338 21 is is RB 36297 1338 22 , , , 36297 1338 23 the the DT 36297 1338 24 relative relative JJ 36297 1338 25 amount amount NN 36297 1338 26 of of IN 36297 1338 27 parallactic parallactic JJ 36297 1338 28 displacement displacement NN 36297 1338 29 is be VBZ 36297 1338 30 a a DT 36297 1338 31 measure measure NN 36297 1338 32 of of IN 36297 1338 33 the the DT 36297 1338 34 relative relative JJ 36297 1338 35 distances distance NNS 36297 1338 36 of of IN 36297 1338 37 the the DT 36297 1338 38 objects object NNS 36297 1338 39 . . . 36297 1339 1 The the DT 36297 1339 2 relative relative JJ 36297 1339 3 distances distance NNS 36297 1339 4 or or CC 36297 1339 5 depth depth NN 36297 1339 6 locations location NNS 36297 1339 7 of of IN 36297 1339 8 different different JJ 36297 1339 9 parts part NNS 36297 1339 10 of of IN 36297 1339 11 an an DT 36297 1339 12 object object NN 36297 1339 13 can can MD 36297 1339 14 be be VB 36297 1339 15 perceived perceive VBN 36297 1339 16 as as IN 36297 1339 17 fluctuating fluctuate VBG 36297 1339 18 or or CC 36297 1339 19 even even RB 36297 1339 20 reversing reverse VBG 36297 1339 21 . . . 36297 1340 1 This this DT 36297 1340 2 is be VBZ 36297 1340 3 due due JJ 36297 1340 4 to to IN 36297 1340 5 fluctuations fluctuation NNS 36297 1340 6 in in IN 36297 1340 7 attention attention NN 36297 1340 8 , , , 36297 1340 9 and and CC 36297 1340 10 illusions illusion NNS 36297 1340 11 of of IN 36297 1340 12 reversible reversible JJ 36297 1340 13 perspective perspective NN 36297 1340 14 are be VBP 36297 1340 15 of of IN 36297 1340 16 this this DT 36297 1340 17 class class NN 36297 1340 18 . . . 36297 1341 1 It -PRON- PRP 36297 1341 2 is be VBZ 36297 1341 3 quite quite RB 36297 1341 4 impossible impossible JJ 36297 1341 5 for for IN 36297 1341 6 one one CD 36297 1341 7 to to TO 36297 1341 8 fix fix VB 36297 1341 9 his -PRON- PRP$ 36297 1341 10 attention attention NN 36297 1341 11 in in IN 36297 1341 12 perfect perfect JJ 36297 1341 13 continuity continuity NN 36297 1341 14 upon upon IN 36297 1341 15 any any DT 36297 1341 16 object object NN 36297 1341 17 . . . 36297 1342 1 There there EX 36297 1342 2 are be VBP 36297 1342 3 many many JJ 36297 1342 4 involuntary involuntary JJ 36297 1342 5 eye eye NN 36297 1342 6 - - HYPH 36297 1342 7 movements movement NNS 36297 1342 8 which which WDT 36297 1342 9 can can MD 36297 1342 10 not not RB 36297 1342 11 be be VB 36297 1342 12 overcome overcome VBN 36297 1342 13 and and CC 36297 1342 14 under under IN 36297 1342 15 normal normal JJ 36297 1342 16 conditions condition NNS 36297 1342 17 certain certain JJ 36297 1342 18 details detail NNS 36297 1342 19 are be VBP 36297 1342 20 likely likely JJ 36297 1342 21 to to TO 36297 1342 22 occupy occupy VB 36297 1342 23 the the DT 36297 1342 24 focus focus NN 36297 1342 25 of of IN 36297 1342 26 attention attention NN 36297 1342 27 alternately alternately RB 36297 1342 28 or or CC 36297 1342 29 successively successively RB 36297 1342 30 . . . 36297 1343 1 This this DT 36297 1343 2 applies apply VBZ 36297 1343 3 equally equally RB 36297 1343 4 well well RB 36297 1343 5 to to IN 36297 1343 6 the the DT 36297 1343 7 auditory auditory JJ 36297 1343 8 sense sense NN 36297 1343 9 and and CC 36297 1343 10 perhaps perhaps RB 36297 1343 11 to to IN 36297 1343 12 the the DT 36297 1343 13 other other JJ 36297 1343 14 senses sense NNS 36297 1343 15 . . . 36297 1344 1 Emotional emotional JJ 36297 1344 2 coloring coloring NN 36297 1344 3 has have VBZ 36297 1344 4 much much JJ 36297 1344 5 to to TO 36297 1344 6 do do VB 36297 1344 7 with with IN 36297 1344 8 the the DT 36297 1344 9 fixation fixation NN 36297 1344 10 of of IN 36297 1344 11 attention attention NN 36297 1344 12 ; ; : 36297 1344 13 that that IN 36297 1344 14 which which WDT 36297 1344 15 we -PRON- PRP 36297 1344 16 admire admire VBP 36297 1344 17 , , , 36297 1344 18 desire desire NN 36297 1344 19 , , , 36297 1344 20 love love NN 36297 1344 21 , , , 36297 1344 22 hate hate VBP 36297 1344 23 , , , 36297 1344 24 etc etc FW 36297 1344 25 . . FW 36297 1344 26 , , , 36297 1344 27 is be VBZ 36297 1344 28 likely likely JJ 36297 1344 29 to to TO 36297 1344 30 dwell dwell VB 36297 1344 31 more more RBR 36297 1344 32 in in IN 36297 1344 33 the the DT 36297 1344 34 focus focus NN 36297 1344 35 of of IN 36297 1344 36 attention attention NN 36297 1344 37 than than IN 36297 1344 38 that that DT 36297 1344 39 which which WDT 36297 1344 40 stirs stir VBZ 36297 1344 41 our -PRON- PRP$ 36297 1344 42 emotions emotion NNS 36297 1344 43 less less RBR 36297 1344 44 . . . 36297 1345 1 A a DT 36297 1345 2 slight slight JJ 36297 1345 3 suggestion suggestion NN 36297 1345 4 of of IN 36297 1345 5 forward forward RB 36297 1345 6 and and CC 36297 1345 7 backward backward JJ 36297 1345 8 movements movement NNS 36297 1345 9 can can MD 36297 1345 10 be be VB 36297 1345 11 produced produce VBN 36297 1345 12 by by IN 36297 1345 13 successively successively RB 36297 1345 14 intercepting intercept VBG 36297 1345 15 the the DT 36297 1345 16 vision vision NN 36297 1345 17 of of IN 36297 1345 18 one one CD 36297 1345 19 eye eye NN 36297 1345 20 by by IN 36297 1345 21 an an DT 36297 1345 22 opaque opaque JJ 36297 1345 23 card card NN 36297 1345 24 or or CC 36297 1345 25 other other JJ 36297 1345 26 convenient convenient JJ 36297 1345 27 object object NN 36297 1345 28 . . . 36297 1346 1 It -PRON- PRP 36297 1346 2 has have VBZ 36297 1346 3 been be VBN 36297 1346 4 suggested suggest VBN 36297 1346 5 that that IN 36297 1346 6 the the DT 36297 1346 7 illusion illusion NN 36297 1346 8 is be VBZ 36297 1346 9 due due JJ 36297 1346 10 to to IN 36297 1346 11 the the DT 36297 1346 12 consequent consequent JJ 36297 1346 13 variations variation NNS 36297 1346 14 in in IN 36297 1346 15 the the DT 36297 1346 16 tension tension NN 36297 1346 17 of of IN 36297 1346 18 convergence convergence NN 36297 1346 19 . . . 36297 1347 1 Third third JJ 36297 1347 2 dimensional dimensional JJ 36297 1347 3 movements movement NNS 36297 1347 4 may may MD 36297 1347 5 be be VB 36297 1347 6 produced produce VBN 36297 1347 7 for for IN 36297 1347 8 binocular binocular JJ 36297 1347 9 or or CC 36297 1347 10 monocular monocular JJ 36297 1347 11 vision vision NN 36297 1347 12 during during IN 36297 1347 13 eye eye NN 36297 1347 14 - - HYPH 36297 1347 15 closure closure NN 36297 1347 16 . . . 36297 1348 1 They -PRON- PRP 36297 1348 2 are be VBP 36297 1348 3 also also RB 36297 1348 4 produced produce VBN 36297 1348 5 by by IN 36297 1348 6 opening open VBG 36297 1348 7 the the DT 36297 1348 8 eyes eye NNS 36297 1348 9 as as RB 36297 1348 10 widely widely RB 36297 1348 11 as as IN 36297 1348 12 possible possible JJ 36297 1348 13 , , , 36297 1348 14 by by IN 36297 1348 15 pressure pressure NN 36297 1348 16 on on IN 36297 1348 17 the the DT 36297 1348 18 eye eye NN 36297 1348 19 - - HYPH 36297 1348 20 balls ball NNS 36297 1348 21 , , , 36297 1348 22 and and CC 36297 1348 23 by by IN 36297 1348 24 stressing stress VBG 36297 1348 25 the the DT 36297 1348 26 eyelids eyelid NNS 36297 1348 27 . . . 36297 1349 1 However however RB 36297 1349 2 , , , 36297 1349 3 these these DT 36297 1349 4 are be VBP 36297 1349 5 not not RB 36297 1349 6 important important JJ 36297 1349 7 and and CC 36297 1349 8 are be VBP 36297 1349 9 merely merely RB 36297 1349 10 mentioned mention VBN 36297 1349 11 in in IN 36297 1349 12 passing pass VBG 36297 1349 13 . . . 36297 1350 1 An an DT 36297 1350 2 increase increase NN 36297 1350 3 in in IN 36297 1350 4 the the DT 36297 1350 5 brightness brightness NN 36297 1350 6 of of IN 36297 1350 7 an an DT 36297 1350 8 object object NN 36297 1350 9 is be VBZ 36297 1350 10 accompanied accompany VBN 36297 1350 11 by by IN 36297 1350 12 an an DT 36297 1350 13 apparent apparent JJ 36297 1350 14 movement movement NN 36297 1350 15 toward toward IN 36297 1350 16 the the DT 36297 1350 17 observer observer NN 36297 1350 18 , , , 36297 1350 19 and and CC 36297 1350 20 conversely conversely RB 36297 1350 21 a a DT 36297 1350 22 decrease decrease NN 36297 1350 23 in in IN 36297 1350 24 brightness brightness NN 36297 1350 25 produces produce VBZ 36297 1350 26 an an DT 36297 1350 27 apparent apparent JJ 36297 1350 28 movement movement NN 36297 1350 29 in in IN 36297 1350 30 the the DT 36297 1350 31 opposite opposite JJ 36297 1350 32 direction direction NN 36297 1350 33 . . . 36297 1351 1 These these DT 36297 1351 2 effects effect NNS 36297 1351 3 may may MD 36297 1351 4 be be VB 36297 1351 5 witnessed witness VBN 36297 1351 6 upon upon IN 36297 1351 7 viewing view VBG 36297 1351 8 the the DT 36297 1351 9 glowing glowing JJ 36297 1351 10 end end NN 36297 1351 11 of of IN 36297 1351 12 a a DT 36297 1351 13 cigar cigar NN 36297 1351 14 which which WDT 36297 1351 15 is be VBZ 36297 1351 16 being be VBG 36297 1351 17 smoked smoke VBN 36297 1351 18 by by IN 36297 1351 19 some some DT 36297 1351 20 one one NN 36297 1351 21 a a DT 36297 1351 22 few few JJ 36297 1351 23 yards yard NNS 36297 1351 24 away away RB 36297 1351 25 in in IN 36297 1351 26 the the DT 36297 1351 27 darkness darkness NN 36297 1351 28 . . . 36297 1352 1 Rapidly rapidly RB 36297 1352 2 moving move VBG 36297 1352 3 thin thin JJ 36297 1352 4 clouds cloud NNS 36297 1352 5 may may MD 36297 1352 6 produce produce VB 36297 1352 7 such such PDT 36297 1352 8 an an DT 36297 1352 9 effect effect NN 36297 1352 10 by by IN 36297 1352 11 varying vary VBG 36297 1352 12 the the DT 36297 1352 13 brightness brightness NN 36297 1352 14 of of IN 36297 1352 15 the the DT 36297 1352 16 moon moon NN 36297 1352 17 . . . 36297 1353 1 Some some DT 36297 1353 2 peculiar peculiar JJ 36297 1353 3 impressions impression NNS 36297 1353 4 of of IN 36297 1353 5 this this DT 36297 1353 6 nature nature NN 36297 1353 7 may may MD 36297 1353 8 be be VB 36297 1353 9 felt feel VBN 36297 1353 10 while while IN 36297 1353 11 watching watch VBG 36297 1353 12 the the DT 36297 1353 13 flashing flash VBG 36297 1353 14 light light NN 36297 1353 15 of of IN 36297 1353 16 some some DT 36297 1353 17 light light JJ 36297 1353 18 - - HYPH 36297 1353 19 houses house NNS 36297 1353 20 or or CC 36297 1353 21 of of IN 36297 1353 22 other other JJ 36297 1353 23 signaling signaling NN 36297 1353 24 stations station NNS 36297 1353 25 . . . 36297 1354 1 It -PRON- PRP 36297 1354 2 has have VBZ 36297 1354 3 been be VBN 36297 1354 4 suggested suggest VBN 36297 1354 5 that that IN 36297 1354 6 we -PRON- PRP 36297 1354 7 naturally naturally RB 36297 1354 8 appraise appraise VBP 36297 1354 9 brighter bright JJR 36297 1354 10 objects object NNS 36297 1354 11 as as IN 36297 1354 12 nearer near JJR 36297 1354 13 than than IN 36297 1354 14 objects object NNS 36297 1354 15 less less RBR 36297 1354 16 bright bright JJ 36297 1354 17 . . . 36297 1355 1 However however RB 36297 1355 2 , , , 36297 1355 3 is be VBZ 36297 1355 4 it -PRON- PRP 36297 1355 5 not not RB 36297 1355 6 interesting interesting JJ 36297 1355 7 to to TO 36297 1355 8 attribute attribute VB 36297 1355 9 the the DT 36297 1355 10 apparent apparent JJ 36297 1355 11 movement movement NN 36297 1355 12 to to IN 36297 1355 13 irradiation irradiation NN 36297 1355 14 ? ? . 36297 1356 1 ( ( -LRB- 36297 1356 2 See see VB 36297 1356 3 Chapter chapter NN 36297 1356 4 VIII viii NN 36297 1356 5 . . . 36297 1356 6 ) ) -RRB- 36297 1357 1 A a DT 36297 1357 2 bright bright JJ 36297 1357 3 object object NN 36297 1357 4 appears appear VBZ 36297 1357 5 larger large JJR 36297 1357 6 than than IN 36297 1357 7 a a DT 36297 1357 8 dark dark JJ 36297 1357 9 object object NN 36297 1357 10 of of IN 36297 1357 11 the the DT 36297 1357 12 same same JJ 36297 1357 13 size size NN 36297 1357 14 and and CC 36297 1357 15 at at IN 36297 1357 16 the the DT 36297 1357 17 same same JJ 36297 1357 18 distance distance NN 36297 1357 19 . . . 36297 1358 1 When when WRB 36297 1358 2 the the DT 36297 1358 3 same same JJ 36297 1358 4 object object NN 36297 1358 5 varies vary VBZ 36297 1358 6 in in IN 36297 1358 7 brightness brightness NN 36297 1358 8 it -PRON- PRP 36297 1358 9 remains remain VBZ 36297 1358 10 in in IN 36297 1358 11 consciousness consciousness NN 36297 1358 12 the the DT 36297 1358 13 same same JJ 36297 1358 14 object object NN 36297 1358 15 and and CC 36297 1358 16 therefore therefore RB 36297 1358 17 of of IN 36297 1358 18 constant constant JJ 36297 1358 19 size size NN 36297 1358 20 ; ; : 36297 1358 21 however however RB 36297 1358 22 , , , 36297 1358 23 the the DT 36297 1358 24 apparent apparent JJ 36297 1358 25 increase increase NN 36297 1358 26 in in IN 36297 1358 27 size size NN 36297 1358 28 as as IN 36297 1358 29 it -PRON- PRP 36297 1358 30 becomes become VBZ 36297 1358 31 brighter bright JJR 36297 1358 32 must must MD 36297 1358 33 be be VB 36297 1358 34 accounted account VBN 36297 1358 35 for for IN 36297 1358 36 in in IN 36297 1358 37 some some DT 36297 1358 38 manner manner NN 36297 1358 39 and and CC 36297 1358 40 there there EX 36297 1358 41 is be VBZ 36297 1358 42 only only RB 36297 1358 43 one one CD 36297 1358 44 way way NN 36297 1358 45 open open JJ 36297 1358 46 . . . 36297 1359 1 It -PRON- PRP 36297 1359 2 must must MD 36297 1359 3 be be VB 36297 1359 4 attributed attribute VBN 36297 1359 5 a a DT 36297 1359 6 lesser less JJR 36297 1359 7 distance distance NN 36297 1359 8 than than IN 36297 1359 9 formerly formerly RB 36297 1359 10 and and CC 36297 1359 11 therefore therefore RB 36297 1359 12 the the DT 36297 1359 13 sudden sudden JJ 36297 1359 14 increase increase NN 36297 1359 15 in in IN 36297 1359 16 brightness brightness NN 36297 1359 17 mediates mediate VBZ 36297 1359 18 a a DT 36297 1359 19 consciousness consciousness NN 36297 1359 20 of of IN 36297 1359 21 a a DT 36297 1359 22 movement movement NN 36297 1359 23 forward forward RB 36297 1359 24 , , , 36297 1359 25 that that RB 36297 1359 26 is is RB 36297 1359 27 , , , 36297 1359 28 toward toward IN 36297 1359 29 the the DT 36297 1359 30 observer observer NN 36297 1359 31 . . . 36297 1360 1 If if IN 36297 1360 2 two two CD 36297 1360 3 similar similar JJ 36297 1360 4 objects object NNS 36297 1360 5 , , , 36297 1360 6 such such JJ 36297 1360 7 as as IN 36297 1360 8 the the DT 36297 1360 9 points point NNS 36297 1360 10 of of IN 36297 1360 11 a a DT 36297 1360 12 compass compass NN 36297 1360 13 , , , 36297 1360 14 are be VBP 36297 1360 15 viewed view VBN 36297 1360 16 binocularly binocularly RB 36297 1360 17 and and CC 36297 1360 18 their -PRON- PRP$ 36297 1360 19 lateral lateral JJ 36297 1360 20 distance distance NN 36297 1360 21 apart apart RB 36297 1360 22 is be VBZ 36297 1360 23 altered alter VBN 36297 1360 24 , , , 36297 1360 25 the the DT 36297 1360 26 observer observer NN 36297 1360 27 is be VBZ 36297 1360 28 conscious conscious JJ 36297 1360 29 of of IN 36297 1360 30 a a DT 36297 1360 31 third third JJ 36297 1360 32 dimensional dimensional JJ 36297 1360 33 movement movement NN 36297 1360 34 . . . 36297 1361 1 Inasmuch inasmuch IN 36297 1361 2 as as IN 36297 1361 3 the the DT 36297 1361 4 accommodation accommodation NN 36297 1361 5 is be VBZ 36297 1361 6 unaltered unaltered JJ 36297 1361 7 but but CC 36297 1361 8 convergence convergence NN 36297 1361 9 must must MD 36297 1361 10 be be VB 36297 1361 11 varied varied JJ 36297 1361 12 as as IN 36297 1361 13 the the DT 36297 1361 14 lateral lateral JJ 36297 1361 15 distance distance NN 36297 1361 16 between between IN 36297 1361 17 the the DT 36297 1361 18 two two CD 36297 1361 19 , , , 36297 1361 20 the the DT 36297 1361 21 explanation explanation NN 36297 1361 22 of of IN 36297 1361 23 the the DT 36297 1361 24 illusion illusion NN 36297 1361 25 must must MD 36297 1361 26 consider consider VB 36297 1361 27 the the DT 36297 1361 28 latter latter JJ 36297 1361 29 . . . 36297 1362 1 The the DT 36297 1362 2 pair pair NN 36297 1362 3 of of IN 36297 1362 4 compass compass NN 36297 1362 5 - - HYPH 36297 1362 6 points point NNS 36297 1362 7 are be VBP 36297 1362 8 very very RB 36297 1362 9 convenient convenient JJ 36297 1362 10 for for IN 36297 1362 11 making make VBG 36297 1362 12 a a DT 36297 1362 13 demonstration demonstration NN 36297 1362 14 of of IN 36297 1362 15 this this DT 36297 1362 16 pronounced pronounced JJ 36297 1362 17 illusion illusion NN 36297 1362 18 . . . 36297 1363 1 The the DT 36297 1363 2 relation relation NN 36297 1363 3 of of IN 36297 1363 4 size size NN 36297 1363 5 and and CC 36297 1363 6 distance distance NN 36297 1363 7 easily easily RB 36297 1363 8 accounts account VBZ 36297 1363 9 for for IN 36297 1363 10 the the DT 36297 1363 11 illusion illusion NN 36297 1363 12 . . . 36297 1364 1 Obviously obviously RB 36297 1364 2 this this DT 36297 1364 3 type type NN 36297 1364 4 of of IN 36297 1364 5 illusion illusion NN 36297 1364 6 can can MD 36297 1364 7 not not RB 36297 1364 8 be be VB 36297 1364 9 illustrated illustrate VBN 36297 1364 10 effectively effectively RB 36297 1364 11 by by IN 36297 1364 12 means mean NNS 36297 1364 13 of of IN 36297 1364 14 diagrams diagram NNS 36297 1364 15 , , , 36297 1364 16 so so CC 36297 1364 17 the the DT 36297 1364 18 reader reader NN 36297 1364 19 must must MD 36297 1364 20 be be VB 36297 1364 21 content content JJ 36297 1364 22 to to TO 36297 1364 23 watch watch VB 36297 1364 24 for for IN 36297 1364 25 them -PRON- PRP 36297 1364 26 himself -PRON- PRP 36297 1364 27 . . . 36297 1365 1 Some some DT 36297 1365 2 persons person NNS 36297 1365 3 are be VBP 36297 1365 4 able able JJ 36297 1365 5 voluntarily voluntarily RB 36297 1365 6 to to TO 36297 1365 7 produce produce VB 36297 1365 8 illusory illusory JJ 36297 1365 9 movements movement NNS 36297 1365 10 in in IN 36297 1365 11 the the DT 36297 1365 12 third third JJ 36297 1365 13 dimension dimension NN 36297 1365 14 , , , 36297 1365 15 but but CC 36297 1365 16 such such JJ 36297 1365 17 persons person NNS 36297 1365 18 are be VBP 36297 1365 19 rare rare JJ 36297 1365 20 . . . 36297 1366 1 Many many JJ 36297 1366 2 persons person NNS 36297 1366 3 have have VBP 36297 1366 4 experienced experience VBN 36297 1366 5 involuntary involuntary JJ 36297 1366 6 illusions illusion NNS 36297 1366 7 of of IN 36297 1366 8 depth depth NN 36297 1366 9 . . . 36297 1367 1 Carr Carr NNP 36297 1367 2 found find VBD 36297 1367 3 , , , 36297 1367 4 in in IN 36297 1367 5 a a DT 36297 1367 6 series series NN 36297 1367 7 of of IN 36297 1367 8 classes class NNS 36297 1367 9 comprising comprise VBG 36297 1367 10 350 350 CD 36297 1367 11 students student NNS 36297 1367 12 , , , 36297 1367 13 58 58 CD 36297 1367 14 persons person NNS 36297 1367 15 who who WP 36297 1367 16 had have VBD 36297 1367 17 experienced experience VBN 36297 1367 18 involuntary involuntary JJ 36297 1367 19 depth depth NN 36297 1367 20 illusions illusion NNS 36297 1367 21 at at IN 36297 1367 22 some some DT 36297 1367 23 time time NN 36297 1367 24 in in IN 36297 1367 25 their -PRON- PRP$ 36297 1367 26 lives life NNS 36297 1367 27 . . . 36297 1368 1 Five five CD 36297 1368 2 of of IN 36297 1368 3 these these DT 36297 1368 4 also also RB 36297 1368 5 possessed possess VBD 36297 1368 6 complete complete JJ 36297 1368 7 voluntary voluntary JJ 36297 1368 8 control control NN 36297 1368 9 over over IN 36297 1368 10 the the DT 36297 1368 11 phenomenon phenomenon NN 36297 1368 12 . . . 36297 1369 1 The the DT 36297 1369 2 circumstances circumstance NNS 36297 1369 3 attending attend VBG 36297 1369 4 visual visual JJ 36297 1369 5 illusions illusion NNS 36297 1369 6 of of IN 36297 1369 7 depth depth NN 36297 1369 8 are be VBP 36297 1369 9 not not RB 36297 1369 10 the the DT 36297 1369 11 same same JJ 36297 1369 12 for for IN 36297 1369 13 various various JJ 36297 1369 14 cases case NNS 36297 1369 15 , , , 36297 1369 16 and and CC 36297 1369 17 the the DT 36297 1369 18 illusions illusion NNS 36297 1369 19 vary vary VBP 36297 1369 20 widely widely RB 36297 1369 21 in in IN 36297 1369 22 their -PRON- PRP$ 36297 1369 23 features feature NNS 36297 1369 24 . . . 36297 1370 1 Like like IN 36297 1370 2 other other JJ 36297 1370 3 phases phase NNS 36297 1370 4 of of IN 36297 1370 5 the the DT 36297 1370 6 subject subject NN 36297 1370 7 , , , 36297 1370 8 this this DT 36297 1370 9 has have VBZ 36297 1370 10 been be VBN 36297 1370 11 treated treat VBN 36297 1370 12 in in IN 36297 1370 13 many many JJ 36297 1370 14 papers paper NNS 36297 1370 15 , , , 36297 1370 16 but but CC 36297 1370 17 of of IN 36297 1370 18 these these DT 36297 1370 19 only only JJ 36297 1370 20 one one CD 36297 1370 21 will will MD 36297 1370 22 be be VB 36297 1370 23 specifically specifically RB 36297 1370 24 mentioned mention VBN 36297 1370 25 , , , 36297 1370 26 for for IN 36297 1370 27 it -PRON- PRP 36297 1370 28 will will MD 36297 1370 29 suffice suffice VB 36297 1370 30 . . . 36297 1371 1 Carr[3 Carr[3 NNP 36297 1371 2 ] ] -RRB- 36297 1371 3 has have VBZ 36297 1371 4 studied study VBN 36297 1371 5 this this DT 36297 1371 6 type type NN 36297 1371 7 of of IN 36297 1371 8 illusion illusion NN 36297 1371 9 comparatively comparatively RB 36297 1371 10 recently recently RB 36297 1371 11 and and CC 36297 1371 12 apparently apparently RB 36297 1371 13 quite quite RB 36297 1371 14 generally generally RB 36297 1371 15 , , , 36297 1371 16 and and CC 36297 1371 17 his -PRON- PRP$ 36297 1371 18 work work NN 36297 1371 19 will will MD 36297 1371 20 be be VB 36297 1371 21 drawn draw VBN 36297 1371 22 upon upon IN 36297 1371 23 for for IN 36297 1371 24 examples example NNS 36297 1371 25 of of IN 36297 1371 26 this this DT 36297 1371 27 type type NN 36297 1371 28 . . . 36297 1372 1 Apparently apparently RB 36297 1372 2 they -PRON- PRP 36297 1372 3 may may MD 36297 1372 4 be be VB 36297 1372 5 divided divide VBN 36297 1372 6 into into IN 36297 1372 7 four four CD 36297 1372 8 classes class NNS 36297 1372 9 : : : 36297 1372 10 ( ( -LRB- 36297 1372 11 1 1 LS 36297 1372 12 ) ) -RRB- 36297 1372 13 Those those DT 36297 1372 14 of of IN 36297 1372 15 pure pure JJ 36297 1372 16 distance distance NN 36297 1372 17 ; ; : 36297 1372 18 that that RB 36297 1372 19 is is RB 36297 1372 20 , , , 36297 1372 21 an an DT 36297 1372 22 object object NN 36297 1372 23 may may MD 36297 1372 24 appear appear VB 36297 1372 25 to to TO 36297 1372 26 be be VB 36297 1372 27 located locate VBN 36297 1372 28 at at IN 36297 1372 29 varying vary VBG 36297 1372 30 distances distance NNS 36297 1372 31 from from IN 36297 1372 32 the the DT 36297 1372 33 observer observer NN 36297 1372 34 , , , 36297 1372 35 but but CC 36297 1372 36 no no DT 36297 1372 37 movement movement NN 36297 1372 38 is be VBZ 36297 1372 39 perceived perceive VBN 36297 1372 40 . . . 36297 1373 1 For for IN 36297 1373 2 example example NN 36297 1373 3 , , , 36297 1373 4 a a DT 36297 1373 5 person person NN 36297 1373 6 might may MD 36297 1373 7 be be VB 36297 1373 8 seen see VBN 36297 1373 9 first first RB 36297 1373 10 at at IN 36297 1373 11 the the DT 36297 1373 12 true true JJ 36297 1373 13 distance distance NN 36297 1373 14 ; ; : 36297 1373 15 he -PRON- PRP 36297 1373 16 might may MD 36297 1373 17 be be VB 36297 1373 18 seen see VBN 36297 1373 19 next next IN 36297 1373 20 very very RB 36297 1373 21 close close JJ 36297 1373 22 in in IN 36297 1373 23 front front NN 36297 1373 24 of of IN 36297 1373 25 the the DT 36297 1373 26 eyes eye NNS 36297 1373 27 ; ; : 36297 1373 28 then then RB 36297 1373 29 he -PRON- PRP 36297 1373 30 might may MD 36297 1373 31 suddenly suddenly RB 36297 1373 32 appear appear VB 36297 1373 33 to to TO 36297 1373 34 be be VB 36297 1373 35 quite quite RB 36297 1373 36 remote remote JJ 36297 1373 37 ; ; : 36297 1373 38 ( ( -LRB- 36297 1373 39 2 2 LS 36297 1373 40 ) ) -RRB- 36297 1373 41 illusions illusion NNS 36297 1373 42 of of IN 36297 1373 43 pure pure JJ 36297 1373 44 motion motion NN 36297 1373 45 ; ; : 36297 1373 46 that that RB 36297 1373 47 is is RB 36297 1373 48 , , , 36297 1373 49 objects object NNS 36297 1373 50 are be VBP 36297 1373 51 perceived perceive VBN 36297 1373 52 as as IN 36297 1373 53 moving move VBG 36297 1373 54 in in IN 36297 1373 55 a a DT 36297 1373 56 certain certain JJ 36297 1373 57 direction direction NN 36297 1373 58 without without IN 36297 1373 59 any any DT 36297 1373 60 apparent apparent JJ 36297 1373 61 change change NN 36297 1373 62 in in IN 36297 1373 63 location location NN 36297 1373 64 . . . 36297 1374 1 In in IN 36297 1374 2 other other JJ 36297 1374 3 words word NNS 36297 1374 4 , , , 36297 1374 5 they -PRON- PRP 36297 1374 6 appear appear VBP 36297 1374 7 to to TO 36297 1374 8 move move VB 36297 1374 9 , , , 36297 1374 10 but but CC 36297 1374 11 they -PRON- PRP 36297 1374 12 do do VBP 36297 1374 13 not not RB 36297 1374 14 appear appear VB 36297 1374 15 to to TO 36297 1374 16 traverse traverse VB 36297 1374 17 space space NN 36297 1374 18 ; ; : 36297 1374 19 ( ( -LRB- 36297 1374 20 3 3 LS 36297 1374 21 ) ) -RRB- 36297 1374 22 illusions illusion NNS 36297 1374 23 of of IN 36297 1374 24 movement movement NN 36297 1374 25 which which WDT 36297 1374 26 include include VBP 36297 1374 27 a a DT 36297 1374 28 change change NN 36297 1374 29 in in IN 36297 1374 30 location location NN 36297 1374 31 . . . 36297 1375 1 This this DT 36297 1375 2 appears appear VBZ 36297 1375 3 to to TO 36297 1375 4 be be VB 36297 1375 5 the the DT 36297 1375 6 most most RBS 36297 1375 7 common common JJ 36297 1375 8 illusion illusion NN 36297 1375 9 of of IN 36297 1375 10 depth depth NN 36297 1375 11 ; ; : 36297 1375 12 ( ( -LRB- 36297 1375 13 4 4 LS 36297 1375 14 ) ) -RRB- 36297 1375 15 those those DT 36297 1375 16 including include VBG 36297 1375 17 a a DT 36297 1375 18 combination combination NN 36297 1375 19 of of IN 36297 1375 20 the the DT 36297 1375 21 first first JJ 36297 1375 22 and and CC 36297 1375 23 third third JJ 36297 1375 24 classes class NNS 36297 1375 25 . . . 36297 1376 1 For for IN 36297 1376 2 example example NN 36297 1376 3 , , , 36297 1376 4 the the DT 36297 1376 5 object object NN 36297 1376 6 might may MD 36297 1376 7 first first RB 36297 1376 8 appear appear VB 36297 1376 9 to to TO 36297 1376 10 move move VB 36297 1376 11 away away RB 36297 1376 12 from from IN 36297 1376 13 its -PRON- PRP$ 36297 1376 14 true true JJ 36297 1376 15 location location NN 36297 1376 16 and and CC 36297 1376 17 is be VBZ 36297 1376 18 perceived perceive VBN 36297 1376 19 at at IN 36297 1376 20 some some DT 36297 1376 21 remote remote JJ 36297 1376 22 place place NN 36297 1376 23 . . . 36297 1377 1 Shortly shortly RB 36297 1377 2 it -PRON- PRP 36297 1377 3 may may MD 36297 1377 4 appear appear VB 36297 1377 5 in in IN 36297 1377 6 its -PRON- PRP$ 36297 1377 7 true true JJ 36297 1377 8 original original JJ 36297 1377 9 position position NN 36297 1377 10 , , , 36297 1377 11 but but CC 36297 1377 12 this this DT 36297 1377 13 change change NN 36297 1377 14 in in IN 36297 1377 15 location location NN 36297 1377 16 does do VBZ 36297 1377 17 not not RB 36297 1377 18 involve involve VB 36297 1377 19 any any DT 36297 1377 20 sense sense NN 36297 1377 21 of of IN 36297 1377 22 motion motion NN 36297 1377 23 . . . 36297 1378 1 These these DT 36297 1378 2 peculiar peculiar JJ 36297 1378 3 illusions illusion NNS 36297 1378 4 of of IN 36297 1378 5 depth depth NN 36297 1378 6 are be VBP 36297 1378 7 not not RB 36297 1378 8 as as RB 36297 1378 9 generally generally RB 36297 1378 10 experienced experience VBN 36297 1378 11 as as IN 36297 1378 12 those those DT 36297 1378 13 described describe VBN 36297 1378 14 in in IN 36297 1378 15 preceding precede VBG 36297 1378 16 chapters chapter NNS 36297 1378 17 . . . 36297 1379 1 A a DT 36297 1379 2 geometrical geometrical JJ 36297 1379 3 illusion illusion NN 36297 1379 4 , , , 36297 1379 5 especially especially RB 36297 1379 6 if if IN 36297 1379 7 it -PRON- PRP 36297 1379 8 is be VBZ 36297 1379 9 pronounced pronounce VBN 36297 1379 10 , , , 36297 1379 11 is be VBZ 36297 1379 12 likely likely JJ 36297 1379 13 to to TO 36297 1379 14 be be VB 36297 1379 15 perceived perceive VBN 36297 1379 16 quite quite RB 36297 1379 17 universally universally RB 36297 1379 18 , , , 36297 1379 19 but but CC 36297 1379 20 these these DT 36297 1379 21 illusions illusion NNS 36297 1379 22 of of IN 36297 1379 23 depth depth NN 36297 1379 24 are be VBP 36297 1379 25 either either CC 36297 1379 26 more more RBR 36297 1379 27 difficult difficult JJ 36297 1379 28 to to TO 36297 1379 29 notice notice VB 36297 1379 30 or or CC 36297 1379 31 more more RBR 36297 1379 32 dependent dependent JJ 36297 1379 33 upon upon IN 36297 1379 34 psychological psychological JJ 36297 1379 35 peculiarities peculiarity NNS 36297 1379 36 far far RB 36297 1379 37 from from IN 36297 1379 38 universal universal JJ 36297 1379 39 among among IN 36297 1379 40 people people NNS 36297 1379 41 . . . 36297 1380 1 It -PRON- PRP 36297 1380 2 is be VBZ 36297 1380 3 interesting interesting JJ 36297 1380 4 to to TO 36297 1380 5 note note VB 36297 1380 6 the the DT 36297 1380 7 percentages percentage NNS 36297 1380 8 computed compute VBN 36297 1380 9 from from IN 36297 1380 10 Carr Carr NNP 36297 1380 11 's 's POS 36297 1380 12 statistics statistic NNS 36297 1380 13 obtained obtain VBN 36297 1380 14 upon upon IN 36297 1380 15 interrogating interrogate VBG 36297 1380 16 350 350 CD 36297 1380 17 students student NNS 36297 1380 18 . . . 36297 1381 1 Of of IN 36297 1381 2 these these DT 36297 1381 3 , , , 36297 1381 4 17 17 CD 36297 1381 5 per per NN 36297 1381 6 cent cent NN 36297 1381 7 had have VBD 36297 1381 8 experienced experience VBN 36297 1381 9 depth depth NN 36297 1381 10 - - HYPH 36297 1381 11 illusions illusion NNS 36297 1381 12 and and CC 36297 1381 13 between between IN 36297 1381 14 one one CD 36297 1381 15 and and CC 36297 1381 16 two two CD 36297 1381 17 per per IN 36297 1381 18 cent cent NN 36297 1381 19 had have VBD 36297 1381 20 voluntary voluntary JJ 36297 1381 21 control control NN 36297 1381 22 of of IN 36297 1381 23 the the DT 36297 1381 24 phenomenon phenomenon NN 36297 1381 25 . . . 36297 1382 1 Of of IN 36297 1382 2 the the DT 36297 1382 3 48 48 CD 36297 1382 4 who who WP 36297 1382 5 had have VBD 36297 1382 6 experienced experience VBN 36297 1382 7 illusions illusion NNS 36297 1382 8 of of IN 36297 1382 9 this this DT 36297 1382 10 type type NN 36297 1382 11 and and CC 36297 1382 12 were be VBD 36297 1382 13 able able JJ 36297 1382 14 to to TO 36297 1382 15 submit submit VB 36297 1382 16 detailed detailed JJ 36297 1382 17 descriptions description NNS 36297 1382 18 , , , 36297 1382 19 25 25 CD 36297 1382 20 per per NN 36297 1382 21 cent cent NN 36297 1382 22 belonged belong VBN 36297 1382 23 to to IN 36297 1382 24 class class NN 36297 1382 25 ( ( -LRB- 36297 1382 26 1 1 CD 36297 1382 27 ) ) -RRB- 36297 1382 28 of of IN 36297 1382 29 those those DT 36297 1382 30 described describe VBN 36297 1382 31 in in IN 36297 1382 32 the the DT 36297 1382 33 preceding precede VBG 36297 1382 34 paragraph paragraph NN 36297 1382 35 ; ; : 36297 1382 36 4 4 CD 36297 1382 37 per per NN 36297 1382 38 cent cent NN 36297 1382 39 to to IN 36297 1382 40 class class NN 36297 1382 41 ( ( -LRB- 36297 1382 42 2 2 CD 36297 1382 43 ) ) -RRB- 36297 1382 44 ; ; : 36297 1382 45 52 52 CD 36297 1382 46 per per NN 36297 1382 47 cent cent NN 36297 1382 48 to to IN 36297 1382 49 class class NN 36297 1382 50 ( ( -LRB- 36297 1382 51 3 3 CD 36297 1382 52 ) ) -RRB- 36297 1382 53 ; ; : 36297 1382 54 and and CC 36297 1382 55 17 17 CD 36297 1382 56 per per NN 36297 1382 57 cent cent NN 36297 1382 58 to to IN 36297 1382 59 class class NN 36297 1382 60 ( ( -LRB- 36297 1382 61 4 4 CD 36297 1382 62 ) ) -RRB- 36297 1382 63 . . . 36297 1383 1 Usually usually RB 36297 1383 2 the the DT 36297 1383 3 illusion illusion NN 36297 1383 4 involves involve VBZ 36297 1383 5 all all DT 36297 1383 6 objects object NNS 36297 1383 7 in in IN 36297 1383 8 the the DT 36297 1383 9 visual visual JJ 36297 1383 10 field field NN 36297 1383 11 but but CC 36297 1383 12 with with IN 36297 1383 13 some some DT 36297 1383 14 subjects subject NNS 36297 1383 15 the the DT 36297 1383 16 field field NN 36297 1383 17 is be VBZ 36297 1383 18 contracted contract VBN 36297 1383 19 or or CC 36297 1383 20 the the DT 36297 1383 21 objects object NNS 36297 1383 22 in in IN 36297 1383 23 the the DT 36297 1383 24 periphery periphery NN 36297 1383 25 of of IN 36297 1383 26 the the DT 36297 1383 27 field field NN 36297 1383 28 are be VBP 36297 1383 29 unaffected unaffected JJ 36297 1383 30 . . . 36297 1384 1 For for IN 36297 1384 2 most most JJS 36297 1384 3 persons person NNS 36297 1384 4 these these DT 36297 1384 5 illusions illusion NNS 36297 1384 6 involve involve VBP 36297 1384 7 normal normal JJ 36297 1384 8 perceptual perceptual JJ 36297 1384 9 objects object NNS 36297 1384 10 , , , 36297 1384 11 although although IN 36297 1384 12 it -PRON- PRP 36297 1384 13 appears appear VBZ 36297 1384 14 that that IN 36297 1384 15 they -PRON- PRP 36297 1384 16 are be VBP 36297 1384 17 phases phase NNS 36297 1384 18 of of IN 36297 1384 19 hallucinatory hallucinatory JJ 36297 1384 20 origin origin NN 36297 1384 21 . . . 36297 1385 1 Inasmuch inasmuch IN 36297 1385 2 as as IN 36297 1385 3 these these DT 36297 1385 4 illusions illusion NNS 36297 1385 5 can can MD 36297 1385 6 not not RB 36297 1385 7 be be VB 36297 1385 8 illustrated illustrate VBN 36297 1385 9 diagrammatically diagrammatically RB 36297 1385 10 we -PRON- PRP 36297 1385 11 can can MD 36297 1385 12 do do VB 36297 1385 13 no no RB 36297 1385 14 better well RBR 36297 1385 15 than than IN 36297 1385 16 to to TO 36297 1385 17 condense condense VB 36297 1385 18 some some DT 36297 1385 19 of of IN 36297 1385 20 the the DT 36297 1385 21 descriptions description NNS 36297 1385 22 obtained obtain VBN 36297 1385 23 and and CC 36297 1385 24 reported report VBN 36297 1385 25 by by IN 36297 1385 26 Carr Carr NNP 36297 1385 27 . . . 36297 1386 1 [ [ -LRB- 36297 1386 2 3 3 LS 36297 1386 3 ] ] -RRB- 36297 1386 4 A a DT 36297 1386 5 case case NN 36297 1386 6 in in IN 36297 1386 7 which which WDT 36297 1386 8 the the DT 36297 1386 9 peripheral peripheral JJ 36297 1386 10 objects object NNS 36297 1386 11 remain remain VBP 36297 1386 12 visible visible JJ 36297 1386 13 and and CC 36297 1386 14 stationary stationary JJ 36297 1386 15 at at IN 36297 1386 16 their -PRON- PRP$ 36297 1386 17 true true JJ 36297 1386 18 positions position NNS 36297 1386 19 while while IN 36297 1386 20 the the DT 36297 1386 21 central central JJ 36297 1386 22 portion portion NN 36297 1386 23 of of IN 36297 1386 24 the the DT 36297 1386 25 field field NN 36297 1386 26 participates participate NNS 36297 1386 27 in in IN 36297 1386 28 the the DT 36297 1386 29 illusion illusion NN 36297 1386 30 is be VBZ 36297 1386 31 as as IN 36297 1386 32 follows follow VBZ 36297 1386 33 : : : 36297 1386 34 The the DT 36297 1386 35 observer observer NN 36297 1386 36 on on IN 36297 1386 37 a a DT 36297 1386 38 clear clear JJ 36297 1386 39 day day NN 36297 1386 40 was be VBD 36297 1386 41 gazing gaze VBG 36297 1386 42 down down RP 36297 1386 43 a a DT 36297 1386 44 street street NN 36297 1386 45 which which WDT 36297 1386 46 ended end VBD 36297 1386 47 a a DT 36297 1386 48 block block NN 36297 1386 49 away away RB 36297 1386 50 , , , 36297 1386 51 a a DT 36297 1386 52 row row NN 36297 1386 53 of of IN 36297 1386 54 houses house NNS 36297 1386 55 forming form VBG 36297 1386 56 the the DT 36297 1386 57 background background NN 36297 1386 58 at at IN 36297 1386 59 the the DT 36297 1386 60 end end NN 36297 1386 61 of of IN 36297 1386 62 the the DT 36297 1386 63 street street NN 36297 1386 64 . . . 36297 1387 1 The the DT 36297 1387 2 observer observer NN 36297 1387 3 was be VBD 36297 1387 4 talking talk VBG 36297 1387 5 to to IN 36297 1387 6 and and CC 36297 1387 7 looking look VBG 36297 1387 8 directly directly RB 36297 1387 9 at at IN 36297 1387 10 a a DT 36297 1387 11 companion companion NN 36297 1387 12 only only RB 36297 1387 13 a a DT 36297 1387 14 short short JJ 36297 1387 15 distance distance NN 36297 1387 16 away away RB 36297 1387 17 . . . 36297 1388 1 Soon soon RB 36297 1388 2 this this DT 36297 1388 3 person person NN 36297 1388 4 ( ( -LRB- 36297 1388 5 apparently apparently RB 36297 1388 6 ) ) -RRB- 36297 1388 7 began begin VBD 36297 1388 8 to to TO 36297 1388 9 move move VB 36297 1388 10 down down IN 36297 1388 11 the the DT 36297 1388 12 street street NN 36297 1388 13 , , , 36297 1388 14 until until IN 36297 1388 15 she -PRON- PRP 36297 1388 16 reached reach VBD 36297 1388 17 the the DT 36297 1388 18 background background NN 36297 1388 19 of of IN 36297 1388 20 houses house NNS 36297 1388 21 at at IN 36297 1388 22 the the DT 36297 1388 23 end end NN 36297 1388 24 , , , 36297 1388 25 and and CC 36297 1388 26 then then RB 36297 1388 27 slowly slowly RB 36297 1388 28 came come VBD 36297 1388 29 back back RB 36297 1388 30 to to IN 36297 1388 31 her -PRON- PRP$ 36297 1388 32 original original JJ 36297 1388 33 position position NN 36297 1388 34 . . . 36297 1389 1 The the DT 36297 1389 2 movement movement NN 36297 1389 3 in in IN 36297 1389 4 both both DT 36297 1389 5 directions direction NNS 36297 1389 6 was be VBD 36297 1389 7 distinctly distinctly RB 36297 1389 8 perceived perceive VBN 36297 1389 9 . . . 36297 1390 1 During during IN 36297 1390 2 the the DT 36297 1390 3 illusory illusory JJ 36297 1390 4 movement movement NN 36297 1390 5 there there EX 36297 1390 6 was be VBD 36297 1390 7 no no DT 36297 1390 8 vagueness vagueness NN 36297 1390 9 of of IN 36297 1390 10 outline outline NN 36297 1390 11 or or CC 36297 1390 12 contour contour NN 36297 1390 13 , , , 36297 1390 14 no no DT 36297 1390 15 blurring blurring NN 36297 1390 16 or or CC 36297 1390 17 confusion confusion NN 36297 1390 18 of of IN 36297 1390 19 features feature NNS 36297 1390 20 ; ; : 36297 1390 21 the the DT 36297 1390 22 person person NN 36297 1390 23 observed observe VBD 36297 1390 24 , , , 36297 1390 25 seemed seem VBD 36297 1390 26 distinct distinct JJ 36297 1390 27 and and CC 36297 1390 28 substantial substantial JJ 36297 1390 29 in in IN 36297 1390 30 character character NN 36297 1390 31 during during IN 36297 1390 32 the the DT 36297 1390 33 illusion illusion NN 36297 1390 34 . . . 36297 1391 1 The the DT 36297 1391 2 perceived perceive VBN 36297 1391 3 object object NN 36297 1391 4 moved move VBD 36297 1391 5 in in IN 36297 1391 6 relation relation NN 36297 1391 7 to to IN 36297 1391 8 surrounding surround VBG 36297 1391 9 objects object NNS 36297 1391 10 ; ; : 36297 1391 11 there there EX 36297 1391 12 was be VBD 36297 1391 13 no no DT 36297 1391 14 movement movement NN 36297 1391 15 of of IN 36297 1391 16 the the DT 36297 1391 17 visual visual JJ 36297 1391 18 field field NN 36297 1391 19 as as IN 36297 1391 20 a a DT 36297 1391 21 whole whole NN 36297 1391 22 . . . 36297 1392 1 The the DT 36297 1392 2 person person NN 36297 1392 3 decreased decrease VBD 36297 1392 4 in in IN 36297 1392 5 size size NN 36297 1392 6 during during IN 36297 1392 7 the the DT 36297 1392 8 backward backward JJ 36297 1392 9 movement movement NN 36297 1392 10 and and CC 36297 1392 11 increased increase VBD 36297 1392 12 in in IN 36297 1392 13 size size NN 36297 1392 14 during during IN 36297 1392 15 the the DT 36297 1392 16 forward forward JJ 36297 1392 17 return return NN 36297 1392 18 movement movement NN 36297 1392 19 . . . 36297 1393 1 With with IN 36297 1393 2 many many JJ 36297 1393 3 persons person NNS 36297 1393 4 who who WP 36297 1393 5 experience experience VBP 36297 1393 6 illusions illusion NNS 36297 1393 7 of of IN 36297 1393 8 depth depth NN 36297 1393 9 , , , 36297 1393 10 the the DT 36297 1393 11 objects object NNS 36297 1393 12 appear appear VBP 36297 1393 13 to to TO 36297 1393 14 move move VB 36297 1393 15 to to IN 36297 1393 16 , , , 36297 1393 17 or or CC 36297 1393 18 appear appear VB 36297 1393 19 at at IN 36297 1393 20 , , , 36297 1393 21 some some DT 36297 1393 22 definite definite JJ 36297 1393 23 position position NN 36297 1393 24 and and CC 36297 1393 25 remain remain VBP 36297 1393 26 there there RB 36297 1393 27 until until IN 36297 1393 28 the the DT 36297 1393 29 illusion illusion NN 36297 1393 30 is be VBZ 36297 1393 31 voluntarily voluntarily RB 36297 1393 32 overcome overcome VBN 36297 1393 33 , , , 36297 1393 34 or or CC 36297 1393 35 until until IN 36297 1393 36 it -PRON- PRP 36297 1393 37 disappears disappear VBZ 36297 1393 38 without without IN 36297 1393 39 voluntary voluntary JJ 36297 1393 40 action action NN 36297 1393 41 . . . 36297 1394 1 A a DT 36297 1394 2 condensation condensation NN 36297 1394 3 of of IN 36297 1394 4 a a DT 36297 1394 5 typical typical JJ 36297 1394 6 description description NN 36297 1394 7 of of IN 36297 1394 8 this this DT 36297 1394 9 general general JJ 36297 1394 10 type type NN 36297 1394 11 presented present VBN 36297 1394 12 by by IN 36297 1394 13 Carr Carr NNP 36297 1394 14 is be VBZ 36297 1394 15 as as IN 36297 1394 16 follows follow VBZ 36297 1394 17 : : : 36297 1394 18 All all DT 36297 1394 19 visual visual JJ 36297 1394 20 objects object NNS 36297 1394 21 suddenly suddenly RB 36297 1394 22 recede recede VBN 36297 1394 23 to to IN 36297 1394 24 the the DT 36297 1394 25 apparent apparent JJ 36297 1394 26 distance distance NN 36297 1394 27 of of IN 36297 1394 28 the the DT 36297 1394 29 horizon horizon NN 36297 1394 30 and and CC 36297 1394 31 remain remain VBP 36297 1394 32 in in IN 36297 1394 33 that that DT 36297 1394 34 position position NN 36297 1394 35 several several JJ 36297 1394 36 minutes minute NNS 36297 1394 37 , , , 36297 1394 38 returning return VBG 36297 1394 39 at at IN 36297 1394 40 the the DT 36297 1394 41 end end NN 36297 1394 42 of of IN 36297 1394 43 this this DT 36297 1394 44 period period NN 36297 1394 45 to to IN 36297 1394 46 their -PRON- PRP$ 36297 1394 47 original original JJ 36297 1394 48 positions position NNS 36297 1394 49 . . . 36297 1395 1 This this DT 36297 1395 2 return return NN 36297 1395 3 movement movement NN 36297 1395 4 is be VBZ 36297 1395 5 very very RB 36297 1395 6 slow slow JJ 36297 1395 7 at at IN 36297 1395 8 the the DT 36297 1395 9 beginning beginning NN 36297 1395 10 , , , 36297 1395 11 but but CC 36297 1395 12 the the DT 36297 1395 13 latter latter JJ 36297 1395 14 phase phase NN 36297 1395 15 of of IN 36297 1395 16 the the DT 36297 1395 17 movement movement NN 36297 1395 18 is be VBZ 36297 1395 19 quite quite RB 36297 1395 20 rapid rapid JJ 36297 1395 21 . . . 36297 1396 1 If if IN 36297 1396 2 the the DT 36297 1396 3 subject subject NN 36297 1396 4 closes close VBZ 36297 1396 5 her -PRON- PRP$ 36297 1396 6 eyes eye NNS 36297 1396 7 while while IN 36297 1396 8 the the DT 36297 1396 9 objects object NNS 36297 1396 10 appear appear VBP 36297 1396 11 at at IN 36297 1396 12 their -PRON- PRP$ 36297 1396 13 distant distant JJ 36297 1396 14 position position NN 36297 1396 15 she -PRON- PRP 36297 1396 16 can can MD 36297 1396 17 not not RB 36297 1396 18 even even RB 36297 1396 19 _ _ NNP 36297 1396 20 imagine imagine VB 36297 1396 21 _ _ IN 36297 1396 22 those those DT 36297 1396 23 objects object NNS 36297 1396 24 located locate VBN 36297 1396 25 anywhere anywhere RB 36297 1396 26 except except IN 36297 1396 27 at at IN 36297 1396 28 their -PRON- PRP$ 36297 1396 29 apparent apparent JJ 36297 1396 30 distant distant JJ 36297 1396 31 position position NN 36297 1396 32 . . . 36297 1397 1 In in IN 36297 1397 2 all all DT 36297 1397 3 cases case NNS 36297 1397 4 ( ( -LRB- 36297 1397 5 encountered encounter VBN 36297 1397 6 by by IN 36297 1397 7 Carr Carr NNP 36297 1397 8 ) ) -RRB- 36297 1397 9 the the DT 36297 1397 10 motion motion NN 36297 1397 11 in in IN 36297 1397 12 both both DT 36297 1397 13 directions direction NNS 36297 1397 14 is be VBZ 36297 1397 15 an an DT 36297 1397 16 actual actual JJ 36297 1397 17 experience experience NN 36297 1397 18 reality reality NN 36297 1397 19 and and CC 36297 1397 20 the the DT 36297 1397 21 subject subject NN 36297 1397 22 was be VBD 36297 1397 23 helpless helpless JJ 36297 1397 24 as as IN 36297 1397 25 to to IN 36297 1397 26 initiating initiating NN 36297 1397 27 , , , 36297 1397 28 stopping stop VBG 36297 1397 29 , , , 36297 1397 30 or or CC 36297 1397 31 modifying modify VBG 36297 1397 32 the the DT 36297 1397 33 course course NN 36297 1397 34 of of IN 36297 1397 35 the the DT 36297 1397 36 illusion illusion NN 36297 1397 37 in in IN 36297 1397 38 any any DT 36297 1397 39 way way NN 36297 1397 40 . . . 36297 1398 1 Objects object NNS 36297 1398 2 and and CC 36297 1398 3 even even RB 36297 1398 4 visual visual JJ 36297 1398 5 images image NNS 36297 1398 6 ( ( -LRB- 36297 1398 7 which which WDT 36297 1398 8 are be VBP 36297 1398 9 subject subject JJ 36297 1398 10 to to IN 36297 1398 11 the the DT 36297 1398 12 same same JJ 36297 1398 13 illusions illusion NNS 36297 1398 14 ) ) -RRB- 36297 1398 15 decrease decrease NN 36297 1398 16 in in IN 36297 1398 17 size size NN 36297 1398 18 in in IN 36297 1398 19 proportion proportion NN 36297 1398 20 to to IN 36297 1398 21 the the DT 36297 1398 22 amount amount NN 36297 1398 23 of of IN 36297 1398 24 backward backward JJ 36297 1398 25 movement movement NN 36297 1398 26 and and CC 36297 1398 27 grow grow VB 36297 1398 28 larger large JJR 36297 1398 29 again again RB 36297 1398 30 on on IN 36297 1398 31 their -PRON- PRP$ 36297 1398 32 return return NN 36297 1398 33 movement movement NN 36297 1398 34 . . . 36297 1399 1 The the DT 36297 1399 2 objects object NNS 36297 1399 3 are be VBP 36297 1399 4 always always RB 36297 1399 5 clearly clearly RB 36297 1399 6 defined define VBN 36297 1399 7 as as IN 36297 1399 8 if if IN 36297 1399 9 in in IN 36297 1399 10 good good JJ 36297 1399 11 focus focus NN 36297 1399 12 . . . 36297 1400 1 In in IN 36297 1400 2 this this DT 36297 1400 3 particular particular JJ 36297 1400 4 case case NN 36297 1400 5 the the DT 36297 1400 6 illusion illusion NN 36297 1400 7 occurred occur VBD 36297 1400 8 about about IN 36297 1400 9 twice twice PDT 36297 1400 10 a a DT 36297 1400 11 year year NN 36297 1400 12 , , , 36297 1400 13 under under IN 36297 1400 14 a a DT 36297 1400 15 variety variety NN 36297 1400 16 of of IN 36297 1400 17 conditions condition NNS 36297 1400 18 of of IN 36297 1400 19 illumination illumination NN 36297 1400 20 , , , 36297 1400 21 at at IN 36297 1400 22 various various JJ 36297 1400 23 times time NNS 36297 1400 24 of of IN 36297 1400 25 the the DT 36297 1400 26 day day NN 36297 1400 27 , , , 36297 1400 28 but but CC 36297 1400 29 apparently apparently RB 36297 1400 30 under under IN 36297 1400 31 conditions condition NNS 36297 1400 32 of of IN 36297 1400 33 a a DT 36297 1400 34 rather rather RB 36297 1400 35 pronounced pronounced JJ 36297 1400 36 fatigue fatigue NN 36297 1400 37 . . . 36297 1401 1 In in IN 36297 1401 2 regard regard NN 36297 1401 3 to to IN 36297 1401 4 the the DT 36297 1401 5 variation variation NN 36297 1401 6 in in IN 36297 1401 7 the the DT 36297 1401 8 size size NN 36297 1401 9 of of IN 36297 1401 10 objects object NNS 36297 1401 11 , , , 36297 1401 12 many many DT 36297 1401 13 who who WP 36297 1401 14 have have VBP 36297 1401 15 experienced experience VBN 36297 1401 16 these these DT 36297 1401 17 illusions illusion NNS 36297 1401 18 of of IN 36297 1401 19 depth depth NN 36297 1401 20 testify testify NN 36297 1401 21 that that IN 36297 1401 22 the the DT 36297 1401 23 size size NN 36297 1401 24 seems seem VBZ 36297 1401 25 to to TO 36297 1401 26 change change VB 36297 1401 27 in in IN 36297 1401 28 proportion proportion NN 36297 1401 29 to to IN 36297 1401 30 the the DT 36297 1401 31 apparent apparent JJ 36297 1401 32 distance distance NN 36297 1401 33 , , , 36297 1401 34 according accord VBG 36297 1401 35 to to IN 36297 1401 36 the the DT 36297 1401 37 law law NN 36297 1401 38 of of IN 36297 1401 39 perspective perspective NN 36297 1401 40 . . . 36297 1402 1 Some some DT 36297 1402 2 persons person NNS 36297 1402 3 appear appear VBP 36297 1402 4 in in IN 36297 1402 5 doubt doubt NN 36297 1402 6 as as IN 36297 1402 7 to to IN 36297 1402 8 this this DT 36297 1402 9 change change NN 36297 1402 10 and and CC 36297 1402 11 a a DT 36297 1402 12 few few JJ 36297 1402 13 have have VBP 36297 1402 14 experienced experience VBN 36297 1402 15 the the DT 36297 1402 16 peculiar peculiar JJ 36297 1402 17 anomaly anomaly NN 36297 1402 18 of of IN 36297 1402 19 decreasing decrease VBG 36297 1402 20 size size NN 36297 1402 21 as as IN 36297 1402 22 the the DT 36297 1402 23 objects object NNS 36297 1402 24 apparently apparently RB 36297 1402 25 approached approach VBN 36297 1402 26 . . . 36297 1403 1 Many many JJ 36297 1403 2 persons person NNS 36297 1403 3 who who WP 36297 1403 4 have have VBP 36297 1403 5 experienced experience VBN 36297 1403 6 these these DT 36297 1403 7 peculiar peculiar JJ 36297 1403 8 illusions illusion NNS 36297 1403 9 report report VBP 36297 1403 10 no no DT 36297 1403 11 change change NN 36297 1403 12 in in IN 36297 1403 13 the the DT 36297 1403 14 distinctness distinctness NN 36297 1403 15 of of IN 36297 1403 16 objects object NNS 36297 1403 17 ; ; : 36297 1403 18 almost almost RB 36297 1403 19 as as IN 36297 1403 20 many many JJ 36297 1403 21 are be VBP 36297 1403 22 uncertain uncertain JJ 36297 1403 23 regarding regard VBG 36297 1403 24 this this DT 36297 1403 25 point point NN 36297 1403 26 ; ; : 36297 1403 27 and and CC 36297 1403 28 as as IN 36297 1403 29 many many JJ 36297 1403 30 report report VBP 36297 1403 31 a a DT 36297 1403 32 change change NN 36297 1403 33 in in IN 36297 1403 34 distinctness distinctness NN 36297 1403 35 . . . 36297 1404 1 Apparently apparently RB 36297 1404 2 there there EX 36297 1404 3 are be VBP 36297 1404 4 phases phase NNS 36297 1404 5 of of IN 36297 1404 6 hallucinatory hallucinatory NN 36297 1404 7 origin origin NN 36297 1404 8 so so IN 36297 1404 9 that that IN 36297 1404 10 there there EX 36297 1404 11 is be VBZ 36297 1404 12 a a DT 36297 1404 13 wide wide JJ 36297 1404 14 variety variety NN 36297 1404 15 of of IN 36297 1404 16 experiences experience NNS 36297 1404 17 among among IN 36297 1404 18 those those DT 36297 1404 19 subject subject JJ 36297 1404 20 to to IN 36297 1404 21 this this DT 36297 1404 22 type type NN 36297 1404 23 of of IN 36297 1404 24 illusion illusion NN 36297 1404 25 . . . 36297 1405 1 According accord VBG 36297 1405 2 to to IN 36297 1405 3 Carr Carr NNP 36297 1405 4 's 's POS 36297 1405 5 investigation investigation NN 36297 1405 6 internal internal JJ 36297 1405 7 conditions condition NNS 36297 1405 8 alone alone RB 36297 1405 9 are be VBP 36297 1405 10 responsible responsible JJ 36297 1405 11 for for IN 36297 1405 12 the the DT 36297 1405 13 illusion illusion NN 36297 1405 14 with with IN 36297 1405 15 more more JJR 36297 1405 16 persons person NNS 36297 1405 17 than than IN 36297 1405 18 those those DT 36297 1405 19 due due IN 36297 1405 20 to to IN 36297 1405 21 external external JJ 36297 1405 22 conditions condition NNS 36297 1405 23 alone alone RB 36297 1405 24 . . . 36297 1406 1 With with IN 36297 1406 2 some some DT 36297 1406 3 persons person NNS 36297 1406 4 a a DT 36297 1406 5 combination combination NN 36297 1406 6 of of IN 36297 1406 7 internal internal JJ 36297 1406 8 and and CC 36297 1406 9 external external JJ 36297 1406 10 conditions condition NNS 36297 1406 11 seem seem VBP 36297 1406 12 to to TO 36297 1406 13 be be VB 36297 1406 14 a a DT 36297 1406 15 necessity necessity NN 36297 1406 16 . . . 36297 1407 1 Fixation fixation NN 36297 1407 2 of of IN 36297 1407 3 vision vision NN 36297 1407 4 appears appear VBZ 36297 1407 5 to to TO 36297 1407 6 be be VB 36297 1407 7 an an DT 36297 1407 8 essential essential JJ 36297 1407 9 objective objective JJ 36297 1407 10 condition condition NN 36297 1407 11 for for IN 36297 1407 12 many many JJ 36297 1407 13 observers observer NNS 36297 1407 14 . . . 36297 1408 1 That that RB 36297 1408 2 is is RB 36297 1408 3 , , , 36297 1408 4 the the DT 36297 1408 5 illusion illusion NN 36297 1408 6 appeared appear VBD 36297 1408 7 while while IN 36297 1408 8 fixating fixate VBG 36297 1408 9 a a DT 36297 1408 10 speaker speaker NN 36297 1408 11 or or CC 36297 1408 12 singer singer NN 36297 1408 13 in in IN 36297 1408 14 a a DT 36297 1408 15 church church NN 36297 1408 16 or or CC 36297 1408 17 a a DT 36297 1408 18 theater theater NN 36297 1408 19 . . . 36297 1409 1 With with IN 36297 1409 2 others other NNS 36297 1409 3 the the DT 36297 1409 4 illusion illusion NN 36297 1409 5 occurs occur VBZ 36297 1409 6 while while IN 36297 1409 7 reading read VBG 36297 1409 8 . . . 36297 1410 1 Some some DT 36297 1410 2 reported report VBD 36297 1410 3 that that DT 36297 1410 4 fixation fixation NN 36297 1410 5 upon upon IN 36297 1410 6 checkered checkered JJ 36297 1410 7 or or CC 36297 1410 8 other other JJ 36297 1410 9 regularly regularly RB 36297 1410 10 patterned pattern VBN 36297 1410 11 objects object NNS 36297 1410 12 was be VBD 36297 1410 13 an an DT 36297 1410 14 essential essential JJ 36297 1410 15 condition condition NN 36297 1410 16 . . . 36297 1411 1 Among among IN 36297 1411 2 the the DT 36297 1411 3 subjective subjective JJ 36297 1411 4 conditions condition NNS 36297 1411 5 reported report VBN 36297 1411 6 as as IN 36297 1411 7 essential essential JJ 36297 1411 8 are be VBP 36297 1411 9 steady steady JJ 36297 1411 10 fixation fixation NN 36297 1411 11 , , , 36297 1411 12 concentration concentration NN 36297 1411 13 of of IN 36297 1411 14 attention attention NN 36297 1411 15 , , , 36297 1411 16 complete complete JJ 36297 1411 17 mental mental JJ 36297 1411 18 absorption absorption NN 36297 1411 19 , , , 36297 1411 20 dreamy dreamy NNP 36297 1411 21 mental mental JJ 36297 1411 22 abstraction abstraction NN 36297 1411 23 , , , 36297 1411 24 and and CC 36297 1411 25 fatigue fatigue NN 36297 1411 26 . . . 36297 1412 1 Ocular Ocular NNP 36297 1412 2 defects defect NNS 36297 1412 3 do do VBP 36297 1412 4 not not RB 36297 1412 5 appear appear VB 36297 1412 6 to to TO 36297 1412 7 be be VB 36297 1412 8 essential essential JJ 36297 1412 9 , , , 36297 1412 10 for for IN 36297 1412 11 the the DT 36297 1412 12 illusions illusion NNS 36297 1412 13 have have VBP 36297 1412 14 been be VBN 36297 1412 15 experienced experience VBN 36297 1412 16 by by IN 36297 1412 17 many many JJ 36297 1412 18 whose whose WP$ 36297 1412 19 eyes eye NNS 36297 1412 20 were be VBD 36297 1412 21 known know VBN 36297 1412 22 to to TO 36297 1412 23 be be VB 36297 1412 24 free free JJ 36297 1412 25 from from IN 36297 1412 26 any any DT 36297 1412 27 abnormalities abnormality NNS 36297 1412 28 . . . 36297 1413 1 Period period NN 36297 1413 2 of of IN 36297 1413 3 life life NN 36297 1413 4 does do VBZ 36297 1413 5 not not RB 36297 1413 6 appear appear VB 36297 1413 7 to to TO 36297 1413 8 have have VB 36297 1413 9 any any DT 36297 1413 10 primary primary JJ 36297 1413 11 influence influence NN 36297 1413 12 , , , 36297 1413 13 for for IN 36297 1413 14 those those DT 36297 1413 15 who who WP 36297 1413 16 are be VBP 36297 1413 17 subject subject JJ 36297 1413 18 to to IN 36297 1413 19 these these DT 36297 1413 20 peculiar peculiar JJ 36297 1413 21 illusions illusion NNS 36297 1413 22 often often RB 36297 1413 23 have have VBP 36297 1413 24 experienced experience VBN 36297 1413 25 them -PRON- PRP 36297 1413 26 throughout throughout IN 36297 1413 27 many many JJ 36297 1413 28 years year NNS 36297 1413 29 . . . 36297 1414 1 In in IN 36297 1414 2 some some DT 36297 1414 3 cases case NNS 36297 1414 4 it -PRON- PRP 36297 1414 5 is be VBZ 36297 1414 6 evident evident JJ 36297 1414 7 that that IN 36297 1414 8 the the DT 36297 1414 9 illusions illusion NNS 36297 1414 10 occur occur VBP 36297 1414 11 during during IN 36297 1414 12 a a DT 36297 1414 13 constrained constrained JJ 36297 1414 14 eye eye NN 36297 1414 15 position position NN 36297 1414 16 , , , 36297 1414 17 while while IN 36297 1414 18 lying lie VBG 36297 1414 19 down down RP 36297 1414 20 , , , 36297 1414 21 immediately immediately RB 36297 1414 22 upon upon IN 36297 1414 23 arising arise VBG 36297 1414 24 from from IN 36297 1414 25 bed bed NN 36297 1414 26 in in IN 36297 1414 27 the the DT 36297 1414 28 morning morning NN 36297 1414 29 , , , 36297 1414 30 and and CC 36297 1414 31 upon upon IN 36297 1414 32 opening open VBG 36297 1414 33 the the DT 36297 1414 34 eyes eye NNS 36297 1414 35 after after IN 36297 1414 36 having have VBG 36297 1414 37 had have VBD 36297 1414 38 them -PRON- PRP 36297 1414 39 closed close VBN 36297 1414 40 for for IN 36297 1414 41 some some DT 36297 1414 42 time time NN 36297 1414 43 . . . 36297 1415 1 However however RB 36297 1415 2 , , , 36297 1415 3 the the DT 36297 1415 4 necessity necessity NN 36297 1415 5 for for IN 36297 1415 6 these these DT 36297 1415 7 conditions condition NNS 36297 1415 8 are be VBP 36297 1415 9 exceptional exceptional JJ 36297 1415 10 . . . 36297 1416 1 The the DT 36297 1416 2 control control NN 36297 1416 3 of of IN 36297 1416 4 these these DT 36297 1416 5 illusions illusion NNS 36297 1416 6 of of IN 36297 1416 7 depth depth NN 36297 1416 8 , , , 36297 1416 9 that that RB 36297 1416 10 is is RB 36297 1416 11 , , , 36297 1416 12 the the DT 36297 1416 13 ability ability NN 36297 1416 14 to to TO 36297 1416 15 create create VB 36297 1416 16 or or CC 36297 1416 17 to to TO 36297 1416 18 destroy destroy VB 36297 1416 19 them -PRON- PRP 36297 1416 20 , , , 36297 1416 21 appears appear VBZ 36297 1416 22 to to TO 36297 1416 23 be be VB 36297 1416 24 totally totally RB 36297 1416 25 lacking lack VBG 36297 1416 26 for for IN 36297 1416 27 most most JJS 36297 1416 28 of of IN 36297 1416 29 those those DT 36297 1416 30 who who WP 36297 1416 31 have have VBP 36297 1416 32 experienced experience VBN 36297 1416 33 them -PRON- PRP 36297 1416 34 . . . 36297 1417 1 Some some DT 36297 1417 2 can can MD 36297 1417 3 influence influence VB 36297 1417 4 them -PRON- PRP 36297 1417 5 , , , 36297 1417 6 a a DT 36297 1417 7 few few JJ 36297 1417 8 can can MD 36297 1417 9 destroy destroy VB 36297 1417 10 them -PRON- PRP 36297 1417 11 , , , 36297 1417 12 a a DT 36297 1417 13 few few JJ 36297 1417 14 can can MD 36297 1417 15 indirectly indirectly RB 36297 1417 16 initiate initiate VB 36297 1417 17 them -PRON- PRP 36297 1417 18 , , , 36297 1417 19 but but CC 36297 1417 20 those those DT 36297 1417 21 who who WP 36297 1417 22 can can MD 36297 1417 23 both both DT 36297 1417 24 create create VB 36297 1417 25 and and CC 36297 1417 26 destroy destroy VB 36297 1417 27 them -PRON- PRP 36297 1417 28 appear appear VB 36297 1417 29 to to TO 36297 1417 30 be be VB 36297 1417 31 rare rare JJ 36297 1417 32 . . . 36297 1418 1 It -PRON- PRP 36297 1418 2 may may MD 36297 1418 3 seem seem VB 36297 1418 4 to to IN 36297 1418 5 the the DT 36297 1418 6 reader reader NN 36297 1418 7 that that IN 36297 1418 8 the the DT 36297 1418 9 latter latter JJ 36297 1418 10 part part NN 36297 1418 11 of of IN 36297 1418 12 this this DT 36297 1418 13 chapter chapter NN 36297 1418 14 departs depart VBZ 36297 1418 15 from from IN 36297 1418 16 the the DT 36297 1418 17 main main JJ 36297 1418 18 trend trend NN 36297 1418 19 of of IN 36297 1418 20 this this DT 36297 1418 21 book book NN 36297 1418 22 , , , 36297 1418 23 for for IN 36297 1418 24 most most JJS 36297 1418 25 of of IN 36297 1418 26 these these DT 36297 1418 27 illusions illusion NNS 36297 1418 28 of of IN 36297 1418 29 depth depth NN 36297 1418 30 are be VBP 36297 1418 31 to to IN 36297 1418 32 a a DT 36297 1418 33 degree degree NN 36297 1418 34 of of IN 36297 1418 35 hallucinatory hallucinatory JJ 36297 1418 36 origin origin NN 36297 1418 37 . . . 36297 1419 1 Furthermore furthermore RB 36297 1419 2 it -PRON- PRP 36297 1419 3 has have VBZ 36297 1419 4 been be VBN 36297 1419 5 the the DT 36297 1419 6 intention intention NN 36297 1419 7 to to TO 36297 1419 8 discuss discuss VB 36297 1419 9 only only RB 36297 1419 10 those those DT 36297 1419 11 types type NNS 36297 1419 12 of of IN 36297 1419 13 illusions illusion NNS 36297 1419 14 which which WDT 36297 1419 15 are be VBP 36297 1419 16 experienced experience VBN 36297 1419 17 quite quite RB 36297 1419 18 uniformly uniformly JJ 36297 1419 19 and and CC 36297 1419 20 universally universally RB 36297 1419 21 . . . 36297 1420 1 The the DT 36297 1420 2 digression digression NN 36297 1420 3 of of IN 36297 1420 4 this this DT 36297 1420 5 chapter chapter NN 36297 1420 6 is be VBZ 36297 1420 7 excused excuse VBN 36297 1420 8 on on IN 36297 1420 9 the the DT 36297 1420 10 basis basis NN 36297 1420 11 of of IN 36297 1420 12 affording afford VBG 36297 1420 13 a a DT 36297 1420 14 glimpse glimpse NN 36297 1420 15 along along IN 36297 1420 16 the the DT 36297 1420 17 borderland borderland NN 36297 1420 18 of of IN 36297 1420 19 those those DT 36297 1420 20 groups group NNS 36297 1420 21 of of IN 36297 1420 22 illusions illusion NNS 36297 1420 23 which which WDT 36297 1420 24 are be VBP 36297 1420 25 nearly nearly RB 36297 1420 26 universally universally RB 36297 1420 27 experienced experienced JJ 36297 1420 28 . . . 36297 1421 1 Many many JJ 36297 1421 2 other other JJ 36297 1421 3 phases phase NNS 36297 1421 4 of of IN 36297 1421 5 depth depth NN 36297 1421 6 illusions illusion NNS 36297 1421 7 have have VBP 36297 1421 8 been be VBN 36297 1421 9 recorded record VBN 36297 1421 10 in in IN 36297 1421 11 scientific scientific JJ 36297 1421 12 literature literature NN 36297 1421 13 . . . 36297 1422 1 The the DT 36297 1422 2 excellent excellent JJ 36297 1422 3 records record NNS 36297 1422 4 presented present VBN 36297 1422 5 by by IN 36297 1422 6 Carr Carr NNP 36297 1422 7 could could MD 36297 1422 8 be be VB 36297 1422 9 drawn draw VBN 36297 1422 10 upon upon IN 36297 1422 11 for for IN 36297 1422 12 further further JJ 36297 1422 13 glimpses glimpse NNS 36297 1422 14 , , , 36297 1422 15 but but CC 36297 1422 16 it -PRON- PRP 36297 1422 17 appears appear VBZ 36297 1422 18 that that IN 36297 1422 19 no no DT 36297 1422 20 more more JJR 36297 1422 21 space space NN 36297 1422 22 should should MD 36297 1422 23 be be VB 36297 1422 24 given give VBN 36297 1422 25 to to IN 36297 1422 26 this this DT 36297 1422 27 exceptional exceptional JJ 36297 1422 28 type type NN 36297 1422 29 . . . 36297 1423 1 The the DT 36297 1423 2 reader reader NN 36297 1423 3 should should MD 36297 1423 4 be be VB 36297 1423 5 sufficiently sufficiently RB 36297 1423 6 forewarned forewarn VBN 36297 1423 7 of of IN 36297 1423 8 this this DT 36297 1423 9 type type NN 36297 1423 10 and and CC 36297 1423 11 should should MD 36297 1423 12 be be VB 36297 1423 13 able able JJ 36297 1423 14 to to TO 36297 1423 15 take take VB 36297 1423 16 it -PRON- PRP 36297 1423 17 into into IN 36297 1423 18 account account NN 36297 1423 19 if if IN 36297 1423 20 peculiarities peculiarity NNS 36297 1423 21 in in IN 36297 1423 22 other other JJ 36297 1423 23 types type NNS 36297 1423 24 appear appear VBP 36297 1423 25 to to TO 36297 1423 26 be be VB 36297 1423 27 explainable explainable JJ 36297 1423 28 in in IN 36297 1423 29 this this DT 36297 1423 30 manner manner NN 36297 1423 31 . . . 36297 1424 1 However however RB 36297 1424 2 , , , 36297 1424 3 in in IN 36297 1424 4 closing close VBG 36297 1424 5 it -PRON- PRP 36297 1424 6 is be VBZ 36297 1424 7 well well JJ 36297 1424 8 to to TO 36297 1424 9 emphasize emphasize VB 36297 1424 10 the the DT 36297 1424 11 fact fact NN 36297 1424 12 that that IN 36297 1424 13 the the DT 36297 1424 14 hallucinatory hallucinatory JJ 36297 1424 15 aspect aspect NN 36297 1424 16 of of IN 36297 1424 17 depth depth NN 36297 1424 18 illusions illusion NNS 36297 1424 19 is be VBZ 36297 1424 20 practically practically RB 36297 1424 21 absent absent JJ 36297 1424 22 in in IN 36297 1424 23 types type NNS 36297 1424 24 of of IN 36297 1424 25 illusions illusion NNS 36297 1424 26 to to TO 36297 1424 27 which which WDT 36297 1424 28 attention attention NN 36297 1424 29 is be VBZ 36297 1424 30 confined confine VBN 36297 1424 31 in in IN 36297 1424 32 other other JJ 36297 1424 33 chapters chapter NNS 36297 1424 34 . . . 36297 1425 1 VIII VIII NNP 36297 1425 2 IRRADIATION IRRADIATION NNP 36297 1425 3 AND and CC 36297 1425 4 BRIGHTNESS BRIGHTNESS NNP 36297 1425 5 - - HYPH 36297 1425 6 CONTRAST CONTRAST NNP 36297 1425 7 Many many JJ 36297 1425 8 interesting interesting JJ 36297 1425 9 and and CC 36297 1425 10 striking striking JJ 36297 1425 11 illusions illusion NNS 36297 1425 12 owe owe VBP 36297 1425 13 their -PRON- PRP$ 36297 1425 14 existence existence NN 36297 1425 15 to to IN 36297 1425 16 contrasts contrast NNS 36297 1425 17 in in IN 36297 1425 18 brightness brightness NN 36297 1425 19 . . . 36297 1426 1 The the DT 36297 1426 2 visual visual JJ 36297 1426 3 phenomenon phenomenon NN 36297 1426 4 of of IN 36297 1426 5 irradiation irradiation NN 36297 1426 6 does do VBZ 36297 1426 7 not not RB 36297 1426 8 strictly strictly RB 36297 1426 9 belong belong VB 36297 1426 10 to to IN 36297 1426 11 this this DT 36297 1426 12 group group NN 36297 1426 13 , , , 36297 1426 14 but but CC 36297 1426 15 it -PRON- PRP 36297 1426 16 is be VBZ 36297 1426 17 so so RB 36297 1426 18 closely closely RB 36297 1426 19 related related JJ 36297 1426 20 to to IN 36297 1426 21 it -PRON- PRP 36297 1426 22 and and CC 36297 1426 23 so so RB 36297 1426 24 dependent dependent JJ 36297 1426 25 upon upon IN 36297 1426 26 brightness brightness NN 36297 1426 27 - - HYPH 36297 1426 28 contrast contrast NN 36297 1426 29 that that IN 36297 1426 30 it -PRON- PRP 36297 1426 31 is be VBZ 36297 1426 32 included include VBN 36297 1426 33 . . . 36297 1427 1 A a DT 36297 1427 2 dark dark JJ 36297 1427 3 line line NN 36297 1427 4 or or CC 36297 1427 5 spot spot NN 36297 1427 6 will will MD 36297 1427 7 appear appear VB 36297 1427 8 darker dark JJR 36297 1427 9 in in IN 36297 1427 10 general general JJ 36297 1427 11 as as IN 36297 1427 12 the the DT 36297 1427 13 brightness brightness NN 36297 1427 14 of of IN 36297 1427 15 its -PRON- PRP$ 36297 1427 16 environment environment NN 36297 1427 17 is be VBZ 36297 1427 18 increased increase VBN 36297 1427 19 ; ; : 36297 1427 20 or or CC 36297 1427 21 conversely conversely RB 36297 1427 22 , , , 36297 1427 23 a a DT 36297 1427 24 white white JJ 36297 1427 25 spot spot NN 36297 1427 26 surrounded surround VBN 36297 1427 27 by by IN 36297 1427 28 a a DT 36297 1427 29 dark dark JJ 36297 1427 30 environment environment NN 36297 1427 31 will will MD 36297 1427 32 appear appear VB 36297 1427 33 brighter bright JJR 36297 1427 34 as as IN 36297 1427 35 the the DT 36297 1427 36 latter latter NN 36297 1427 37 is be VBZ 36297 1427 38 darkened darken VBN 36297 1427 39 . . . 36297 1428 1 In in IN 36297 1428 2 other other JJ 36297 1428 3 words word NNS 36297 1428 4 , , , 36297 1428 5 black black JJ 36297 1428 6 and and CC 36297 1428 7 white white JJ 36297 1428 8 , , , 36297 1428 9 when when WRB 36297 1428 10 juxtaposed juxtapose VBN 36297 1428 11 , , , 36297 1428 12 mutually mutually RB 36297 1428 13 reinforce reinforce VB 36297 1428 14 each each DT 36297 1428 15 other other JJ 36297 1428 16 . . . 36297 1429 1 Black black JJ 36297 1429 2 print print NN 36297 1429 3 on on IN 36297 1429 4 a a DT 36297 1429 5 white white JJ 36297 1429 6 page page NN 36297 1429 7 appears appear VBZ 36297 1429 8 much much RB 36297 1429 9 darker dark JJR 36297 1429 10 than than IN 36297 1429 11 it -PRON- PRP 36297 1429 12 really really RB 36297 1429 13 is be VBZ 36297 1429 14 . . . 36297 1430 1 This this DT 36297 1430 2 may may MD 36297 1430 3 be be VB 36297 1430 4 proved prove VBN 36297 1430 5 by by IN 36297 1430 6 punching punch VBG 36297 1430 7 a a DT 36297 1430 8 hole hole NN 36297 1430 9 in in IN 36297 1430 10 a a DT 36297 1430 11 black black JJ 36297 1430 12 velvet velvet NN 36297 1430 13 cloth cloth NN 36297 1430 14 and and CC 36297 1430 15 laying lay VBG 36297 1430 16 this this DT 36297 1430 17 hole hole NN 36297 1430 18 over over IN 36297 1430 19 a a DT 36297 1430 20 " " `` 36297 1430 21 black black JJ 36297 1430 22 " " '' 36297 1430 23 portion portion NN 36297 1430 24 of of IN 36297 1430 25 a a DT 36297 1430 26 large large JJ 36297 1430 27 letter letter NN 36297 1430 28 . . . 36297 1431 1 The the DT 36297 1431 2 ink ink NN 36297 1431 3 which which WDT 36297 1431 4 appeared appear VBD 36297 1431 5 so so RB 36297 1431 6 black black JJ 36297 1431 7 in in IN 36297 1431 8 the the DT 36297 1431 9 print print NN 36297 1431 10 , , , 36297 1431 11 when when WRB 36297 1431 12 the the DT 36297 1431 13 latter latter NN 36297 1431 14 was be VBD 36297 1431 15 surrounded surround VBN 36297 1431 16 by by IN 36297 1431 17 the the DT 36297 1431 18 white white NNP 36297 1431 19 paper paper NN 36297 1431 20 , , , 36297 1431 21 now now RB 36297 1431 22 appears appear VBZ 36297 1431 23 only only RB 36297 1431 24 a a DT 36297 1431 25 dark dark JJ 36297 1431 26 gray gray NN 36297 1431 27 . . . 36297 1432 1 Incidentally incidentally RB 36297 1432 2 a a DT 36297 1432 3 hole hole NN 36297 1432 4 in in IN 36297 1432 5 a a DT 36297 1432 6 box box NN 36297 1432 7 lined line VBN 36297 1432 8 with with IN 36297 1432 9 black black JJ 36297 1432 10 velvet velvet NN 36297 1432 11 is be VBZ 36297 1432 12 much much RB 36297 1432 13 darker dark JJR 36297 1432 14 than than IN 36297 1432 15 a a DT 36297 1432 16 piece piece NN 36297 1432 17 of of IN 36297 1432 18 the the DT 36297 1432 19 black black JJ 36297 1432 20 velvet velvet NNS 36297 1432 21 surrounding surround VBG 36297 1432 22 the the DT 36297 1432 23 hole hole NN 36297 1432 24 . . . 36297 1433 1 The the DT 36297 1433 2 effects effect NNS 36297 1433 3 of of IN 36297 1433 4 brightness brightness NN 36297 1433 5 - - HYPH 36297 1433 6 contrast contrast NN 36297 1433 7 are be VBP 36297 1433 8 particularly particularly RB 36297 1433 9 striking striking JJ 36297 1433 10 when when WRB 36297 1433 11 demonstrated demonstrate VBN 36297 1433 12 by by IN 36297 1433 13 means mean NNS 36297 1433 14 of of IN 36297 1433 15 lighting lighting NN 36297 1433 16 , , , 36297 1433 17 a a DT 36297 1433 18 simple simple JJ 36297 1433 19 apparatus apparatus NN 36297 1433 20 being be VBG 36297 1433 21 illustrated illustrate VBN 36297 1433 22 diagrammatically diagrammatically RB 36297 1433 23 in in IN 36297 1433 24 Fig Fig NNP 36297 1433 25 . . . 36297 1434 1 62 62 CD 36297 1434 2 . . . 36297 1435 1 For for IN 36297 1435 2 example example NN 36297 1435 3 , , , 36297 1435 4 if if IN 36297 1435 5 a a DT 36297 1435 6 hole hole NN 36297 1435 7 _ _ NNP 36297 1435 8 H H NNP 36297 1435 9 _ _ NNP 36297 1435 10 is be VBZ 36297 1435 11 cut cut VBN 36297 1435 12 in in IN 36297 1435 13 an an DT 36297 1435 14 opaque opaque JJ 36297 1435 15 white white JJ 36297 1435 16 blotting blot VBG 36297 1435 17 paper paper NN 36297 1435 18 and and CC 36297 1435 19 a a DT 36297 1435 20 large large JJ 36297 1435 21 piece piece NN 36297 1435 22 of of IN 36297 1435 23 the the DT 36297 1435 24 white white NNP 36297 1435 25 blotting blotting NNP 36297 1435 26 paper paper NN 36297 1435 27 is be VBZ 36297 1435 28 placed place VBN 36297 1435 29 at at IN 36297 1435 30 _ _ NNP 36297 1435 31 C C NNP 36297 1435 32 _ _ NNP 36297 1435 33 , , , 36297 1435 34 the the DT 36297 1435 35 eye eye NN 36297 1435 36 when when WRB 36297 1435 37 placed place VBN 36297 1435 38 before before IN 36297 1435 39 the the DT 36297 1435 40 opening opening NN 36297 1435 41 at at IN 36297 1435 42 the the DT 36297 1435 43 right right NN 36297 1435 44 will will MD 36297 1435 45 see see VB 36297 1435 46 the the DT 36297 1435 47 opening opening NN 36297 1435 48 at at IN 36297 1435 49 _ _ NNP 36297 1435 50 H H NNP 36297 1435 51 _ _ NNP 36297 1435 52 filled fill VBD 36297 1435 53 with with IN 36297 1435 54 the the DT 36297 1435 55 background background NN 36297 1435 56 _ _ NNP 36297 1435 57 C C NNP 36297 1435 58 _ _ NNP 36297 1435 59 . . . 36297 1436 1 The the DT 36297 1436 2 hole hole NN 36297 1436 3 _ _ NNP 36297 1436 4 H H NNP 36297 1436 5 _ _ NNP 36297 1436 6 may may MD 36297 1436 7 be be VB 36297 1436 8 cut cut VBN 36297 1436 9 in in IN 36297 1436 10 thin thin JJ 36297 1436 11 metal metal NN 36297 1436 12 , , , 36297 1436 13 painted paint VBD 36297 1436 14 a a DT 36297 1436 15 dull dull JJ 36297 1436 16 white white NN 36297 1436 17 , , , 36297 1436 18 and and CC 36297 1436 19 may may MD 36297 1436 20 be be VB 36297 1436 21 of of IN 36297 1436 22 the the DT 36297 1436 23 shape shape NN 36297 1436 24 of of IN 36297 1436 25 a a DT 36297 1436 26 star star NN 36297 1436 27 . . . 36297 1437 1 This this DT 36297 1437 2 shape shape NN 36297 1437 3 provides provide VBZ 36297 1437 4 an an DT 36297 1437 5 intimacy intimacy NN 36297 1437 6 between between IN 36297 1437 7 the the DT 36297 1437 8 hole hole NN 36297 1437 9 and and CC 36297 1437 10 its -PRON- PRP$ 36297 1437 11 environment environment NN 36297 1437 12 which which WDT 36297 1437 13 tends tend VBZ 36297 1437 14 to to TO 36297 1437 15 augment augment VB 36297 1437 16 the the DT 36297 1437 17 effects effect NNS 36297 1437 18 of of IN 36297 1437 19 contrasts contrast NNS 36297 1437 20 . . . 36297 1438 1 _ _ NNP 36297 1438 2 R R NNP 36297 1438 3 _ _ NNP 36297 1438 4 and and CC 36297 1438 5 _ _ NNP 36297 1438 6 F F NNP 36297 1438 7 _ _ NNP 36297 1438 8 are be VBP 36297 1438 9 respectively respectively RB 36297 1438 10 the the DT 36297 1438 11 rear rear JJ 36297 1438 12 and and CC 36297 1438 13 front front JJ 36297 1438 14 lamps lamp NNS 36297 1438 15 . . . 36297 1439 1 That that RB 36297 1439 2 is is RB 36297 1439 3 , , , 36297 1439 4 the the DT 36297 1439 5 lamps lamp NNS 36297 1439 6 _ _ NNP 36297 1439 7 R R NNP 36297 1439 8 _ _ NNP 36297 1439 9 illuminate illuminate NN 36297 1439 10 _ _ NNP 36297 1439 11 C C NNP 36297 1439 12 _ _ NNP 36297 1439 13 , , , 36297 1439 14 which which WDT 36297 1439 15 " " `` 36297 1439 16 fills fill VBZ 36297 1439 17 " " '' 36297 1439 18 the the DT 36297 1439 19 hole hole NN 36297 1439 20 and and CC 36297 1439 21 apparently apparently RB 36297 1439 22 is be VBZ 36297 1439 23 the the DT 36297 1439 24 hole hole NN 36297 1439 25 ; ; : 36297 1439 26 and and CC 36297 1439 27 the the DT 36297 1439 28 lamps lamp NNS 36297 1439 29 _ _ NNP 36297 1439 30 F F NNP 36297 1439 31 _ _ NNP 36297 1439 32 illuminate illuminate VB 36297 1439 33 the the DT 36297 1439 34 diffusing diffuse VBG 36297 1439 35 white white JJ 36297 1439 36 environment environment NN 36297 1439 37 _ _ NNP 36297 1439 38 E E NNP 36297 1439 39 _ _ NNP 36297 1439 40 . . . 36297 1440 1 The the DT 36297 1440 2 two two CD 36297 1440 3 sets set NNS 36297 1440 4 of of IN 36297 1440 5 lamps lamp NNS 36297 1440 6 may may MD 36297 1440 7 be be VB 36297 1440 8 controlled control VBN 36297 1440 9 by by IN 36297 1440 10 separate separate JJ 36297 1440 11 rheostats rheostat NNS 36297 1440 12 , , , 36297 1440 13 but but CC 36297 1440 14 if if IN 36297 1440 15 the the DT 36297 1440 16 latter latter JJ 36297 1440 17 are be VBP 36297 1440 18 unavailable unavailable JJ 36297 1440 19 the the DT 36297 1440 20 lamps lamp NNS 36297 1440 21 ( ( -LRB- 36297 1440 22 several several JJ 36297 1440 23 in in IN 36297 1440 24 each each DT 36297 1440 25 set set NN 36297 1440 26 ) ) -RRB- 36297 1440 27 may may MD 36297 1440 28 be be VB 36297 1440 29 arranged arrange VBN 36297 1440 30 so so IN 36297 1440 31 that that IN 36297 1440 32 by by IN 36297 1440 33 turning turn VBG 36297 1440 34 each each DT 36297 1440 35 one one NN 36297 1440 36 off off RP 36297 1440 37 or or CC 36297 1440 38 on on RB 36297 1440 39 , , , 36297 1440 40 a a DT 36297 1440 41 range range NN 36297 1440 42 of of IN 36297 1440 43 contrasts contrast NNS 36297 1440 44 in in IN 36297 1440 45 brightness brightness NN 36297 1440 46 between between IN 36297 1440 47 _ _ NNP 36297 1440 48 E E NNP 36297 1440 49 _ _ NNP 36297 1440 50 and and CC 36297 1440 51 _ _ NNP 36297 1440 52 H H NNP 36297 1440 53 _ _ NNP 36297 1440 54 ( ( -LRB- 36297 1440 55 in in IN 36297 1440 56 reality reality NN 36297 1440 57 _ _ NNP 36297 1440 58 C C NNP 36297 1440 59 _ _ NNP 36297 1440 60 ) ) -RRB- 36297 1440 61 may may MD 36297 1440 62 be be VB 36297 1440 63 obtained obtain VBN 36297 1440 64 . . . 36297 1441 1 ( ( -LRB- 36297 1441 2 By by IN 36297 1441 3 using use VBG 36297 1441 4 colored colored JJ 36297 1441 5 lamps lamp NNS 36297 1441 6 and and CC 36297 1441 7 colored colored JJ 36297 1441 8 papers paper NNS 36297 1441 9 as as IN 36297 1441 10 discussed discuss VBN 36297 1441 11 in in IN 36297 1441 12 Chapter Chapter NNP 36297 1441 13 IX IX NNP 36297 1441 14 the the DT 36297 1441 15 marvelous marvelous JJ 36297 1441 16 effects effect NNS 36297 1441 17 of of IN 36297 1441 18 color color NN 36297 1441 19 - - HYPH 36297 1441 20 contrast contrast NN 36297 1441 21 may may MD 36297 1441 22 be be VB 36297 1441 23 superposed superpose VBN 36297 1441 24 upon upon IN 36297 1441 25 those those DT 36297 1441 26 of of IN 36297 1441 27 brightness brightness NN 36297 1441 28 - - HYPH 36297 1441 29 contrast contrast NN 36297 1441 30 . . . 36297 1441 31 ) ) -RRB- 36297 1442 1 [ [ -LRB- 36297 1442 2 Illustration illustration NN 36297 1442 3 : : : 36297 1442 4 Fig Fig NNP 36297 1442 5 . . . 36297 1443 1 62.--Simple 62.--simple CD 36297 1443 2 apparatus apparatus NNP 36297 1443 3 for for IN 36297 1443 4 demonstrating demonstrate VBG 36297 1443 5 the the DT 36297 1443 6 remarkable remarkable JJ 36297 1443 7 effects effect NNS 36297 1443 8 of of IN 36297 1443 9 contrasts contrast NNS 36297 1443 10 in in IN 36297 1443 11 brightness brightness NN 36297 1443 12 and and CC 36297 1443 13 color color NN 36297 1443 14 . . . 36297 1443 15 ] ] -RRB- 36297 1444 1 If if IN 36297 1444 2 , , , 36297 1444 3 for for IN 36297 1444 4 example example NN 36297 1444 5 , , , 36297 1444 6 _ _ NNP 36297 1444 7 C C NNP 36297 1444 8 _ _ NNP 36297 1444 9 is be VBZ 36297 1444 10 very very RB 36297 1444 11 feebly feebly RB 36297 1444 12 illuminated illuminate VBN 36297 1444 13 and and CC 36297 1444 14 _ _ NNP 36297 1444 15 E E NNP 36297 1444 16 _ _ NNP 36297 1444 17 is be VBZ 36297 1444 18 very very RB 36297 1444 19 bright bright JJ 36297 1444 20 , , , 36297 1444 21 _ _ NNP 36297 1444 22 C C NNP 36297 1444 23 _ _ NNP 36297 1444 24 will will MD 36297 1444 25 be be VB 36297 1444 26 pronounced pronounce VBN 36297 1444 27 black black JJ 36297 1444 28 ; ; : 36297 1444 29 but but CC 36297 1444 30 when when WRB 36297 1444 31 the the DT 36297 1444 32 lamps lamp NNS 36297 1444 33 _ _ NNP 36297 1444 34 F F NNP 36297 1444 35 _ _ NNP 36297 1444 36 are be VBP 36297 1444 37 extinguished extinguish VBN 36297 1444 38 and and CC 36297 1444 39 no no DT 36297 1444 40 light light NN 36297 1444 41 is be VBZ 36297 1444 42 permitted permit VBN 36297 1444 43 to to TO 36297 1444 44 reach reach VB 36297 1444 45 _ _ NNP 36297 1444 46 E E NNP 36297 1444 47 _ _ NNP 36297 1444 48 , , , 36297 1444 49 the the DT 36297 1444 50 contrast contrast NN 36297 1444 51 is be VBZ 36297 1444 52 reversed reverse VBN 36297 1444 53 , , , 36297 1444 54 and and CC 36297 1444 55 _ _ NNP 36297 1444 56 C C NNP 36297 1444 57 _ _ NNP 36297 1444 58 may may MD 36297 1444 59 actually actually RB 36297 1444 60 appear appear VB 36297 1444 61 " " `` 36297 1444 62 white white JJ 36297 1444 63 . . . 36297 1444 64 " " '' 36297 1445 1 Of of RB 36297 1445 2 course course RB 36297 1445 3 , , , 36297 1445 4 it -PRON- PRP 36297 1445 5 is be VBZ 36297 1445 6 obvious obvious JJ 36297 1445 7 that that IN 36297 1445 8 white white JJ 36297 1445 9 and and CC 36297 1445 10 black black JJ 36297 1445 11 are be VBP 36297 1445 12 relative relative JJ 36297 1445 13 terms term NNS 36297 1445 14 as as IN 36297 1445 15 encountered encounter VBN 36297 1445 16 in in IN 36297 1445 17 such such PDT 36297 1445 18 a a DT 36297 1445 19 case case NN 36297 1445 20 . . . 36297 1446 1 In in IN 36297 1446 2 fact fact NN 36297 1446 3 in in IN 36297 1446 4 brightness brightness NN 36297 1446 5 - - HYPH 36297 1446 6 contrasts contrast NNS 36297 1446 7 relative relative JJ 36297 1446 8 and and CC 36297 1446 9 not not RB 36297 1446 10 absolute absolute JJ 36297 1446 11 values value NNS 36297 1446 12 of of IN 36297 1446 13 brightness brightness NN 36297 1446 14 are be VBP 36297 1446 15 usually usually RB 36297 1446 16 the the DT 36297 1446 17 more more RBR 36297 1446 18 important important JJ 36297 1446 19 . . . 36297 1447 1 In in IN 36297 1447 2 order order NN 36297 1447 3 to to TO 36297 1447 4 minimize minimize VB 36297 1447 5 the the DT 36297 1447 6 stray stray JJ 36297 1447 7 light light NN 36297 1447 8 which which WDT 36297 1447 9 emerges emerge VBZ 36297 1447 10 from from IN 36297 1447 11 _ _ NNP 36297 1447 12 H H NNP 36297 1447 13 _ _ NNP 36297 1447 14 , , , 36297 1447 15 it -PRON- PRP 36297 1447 16 is be VBZ 36297 1447 17 well well JJ 36297 1447 18 to to TO 36297 1447 19 paint paint VB 36297 1447 20 the the DT 36297 1447 21 inside inside NN 36297 1447 22 of of IN 36297 1447 23 both both DT 36297 1447 24 compartments compartment NNS 36297 1447 25 black black JJ 36297 1447 26 with with IN 36297 1447 27 the the DT 36297 1447 28 exception exception NN 36297 1447 29 of of IN 36297 1447 30 sufficiently sufficiently RB 36297 1447 31 large large JJ 36297 1447 32 areas area NNS 36297 1447 33 of of IN 36297 1447 34 _ _ NNP 36297 1447 35 C C NNP 36297 1447 36 _ _ NNP 36297 1447 37 and and CC 36297 1447 38 _ _ NNP 36297 1447 39 E E NNP 36297 1447 40 _ _ NNP 36297 1447 41 . . . 36297 1448 1 The the DT 36297 1448 2 use use NN 36297 1448 3 of of IN 36297 1448 4 black black JJ 36297 1448 5 velvet velvet NN 36297 1448 6 instead instead RB 36297 1448 7 of of IN 36297 1448 8 black black JJ 36297 1448 9 paint paint NN 36297 1448 10 is be VBZ 36297 1448 11 sometimes sometimes RB 36297 1448 12 advisable advisable JJ 36297 1448 13 . . . 36297 1449 1 It -PRON- PRP 36297 1449 2 is be VBZ 36297 1449 3 also also RB 36297 1449 4 well well JJ 36297 1449 5 to to TO 36297 1449 6 screen screen VB 36297 1449 7 the the DT 36297 1449 8 lamps lamp NNS 36297 1449 9 as as IN 36297 1449 10 suggested suggest VBN 36297 1449 11 in in IN 36297 1449 12 the the DT 36297 1449 13 diagram diagram NN 36297 1449 14 . . . 36297 1450 1 This this DT 36297 1450 2 simple simple JJ 36297 1450 3 apparatus apparatus NN 36297 1450 4 will will MD 36297 1450 5 demonstrate demonstrate VB 36297 1450 6 some some DT 36297 1450 7 very very RB 36297 1450 8 striking striking JJ 36297 1450 9 effects effect NNS 36297 1450 10 of of IN 36297 1450 11 contrasts contrast NNS 36297 1450 12 in in IN 36297 1450 13 brightness brightness NN 36297 1450 14 and and CC 36297 1450 15 will will MD 36297 1450 16 serve serve VB 36297 1450 17 , , , 36297 1450 18 also also RB 36297 1450 19 , , , 36297 1450 20 to to TO 36297 1450 21 demonstrate demonstrate VB 36297 1450 22 even even RB 36297 1450 23 more more RBR 36297 1450 24 interesting interesting JJ 36297 1450 25 effects effect NNS 36297 1450 26 of of IN 36297 1450 27 contrasts contrast NNS 36297 1450 28 in in IN 36297 1450 29 color color NN 36297 1450 30 . . . 36297 1451 1 Two two CD 36297 1451 2 opposite opposite JJ 36297 1451 3 contrasts contrast VBZ 36297 1451 4 obtainable obtainable JJ 36297 1451 5 by by IN 36297 1451 6 means mean NNS 36297 1451 7 of of IN 36297 1451 8 a a DT 36297 1451 9 simple simple JJ 36297 1451 10 apparatus apparatus NN 36297 1451 11 illustrated illustrate VBN 36297 1451 12 in in IN 36297 1451 13 Fig Fig NNP 36297 1451 14 . . . 36297 1452 1 62 62 CD 36297 1452 2 may may MD 36297 1452 3 be be VB 36297 1452 4 shown show VBN 36297 1452 5 simultaneously simultaneously RB 36297 1452 6 by by IN 36297 1452 7 means mean NNS 36297 1452 8 of of IN 36297 1452 9 white white JJ 36297 1452 10 , , , 36297 1452 11 black black JJ 36297 1452 12 , , , 36297 1452 13 and and CC 36297 1452 14 gray gray JJ 36297 1452 15 papers paper NNS 36297 1452 16 arranged arrange VBD 36297 1452 17 as as IN 36297 1452 18 in in IN 36297 1452 19 Fig Fig NNP 36297 1452 20 . . . 36297 1453 1 63 63 CD 36297 1453 2 . . . 36297 1454 1 In in IN 36297 1454 2 this this DT 36297 1454 3 figure figure NN 36297 1454 4 the the DT 36297 1454 5 gray gray NN 36297 1454 6 is be VBZ 36297 1454 7 represented represent VBN 36297 1454 8 by by IN 36297 1454 9 the the DT 36297 1454 10 partially partially RB 36297 1454 11 black black JJ 36297 1454 12 _ _ NNP 36297 1454 13 V_s v_s CD 36297 1454 14 , , , 36297 1454 15 each each DT 36297 1454 16 of of IN 36297 1454 17 which which WDT 36297 1454 18 contains contain VBZ 36297 1454 19 equal equal JJ 36297 1454 20 amounts amount NNS 36297 1454 21 of of IN 36297 1454 22 black black NN 36297 1454 23 and and CC 36297 1454 24 of of IN 36297 1454 25 white white JJ 36297 1454 26 . . . 36297 1455 1 When when WRB 36297 1455 2 held hold VBN 36297 1455 3 at at IN 36297 1455 4 some some DT 36297 1455 5 distance distance NN 36297 1455 6 this this DT 36297 1455 7 serves serve VBZ 36297 1455 8 as as IN 36297 1455 9 a a DT 36297 1455 10 gray gray NN 36297 1455 11 and and CC 36297 1455 12 the the DT 36297 1455 13 same same JJ 36297 1455 14 effect effect NN 36297 1455 15 is be VBZ 36297 1455 16 apparent apparent JJ 36297 1455 17 as as IN 36297 1455 18 is be VBZ 36297 1455 19 described describe VBN 36297 1455 20 for for IN 36297 1455 21 the the DT 36297 1455 22 case case NN 36297 1455 23 of of IN 36297 1455 24 actually actually RB 36297 1455 25 gray gray JJ 36297 1455 26 _ _ NNP 36297 1455 27 V_s V_s NNP 36297 1455 28 . . . 36297 1456 1 An an DT 36297 1456 2 excellent excellent JJ 36297 1456 3 demonstration demonstration NN 36297 1456 4 may may MD 36297 1456 5 be be VB 36297 1456 6 made make VBN 36297 1456 7 by by IN 36297 1456 8 the the DT 36297 1456 9 reader reader NN 36297 1456 10 by by IN 36297 1456 11 using use VBG 36297 1456 12 two two CD 36297 1456 13 _ _ NNP 36297 1456 14 V_s v_s CD 36297 1456 15 , , , 36297 1456 16 cut cut VBN 36297 1456 17 from from IN 36297 1456 18 the the DT 36297 1456 19 same same JJ 36297 1456 20 sheet sheet NN 36297 1456 21 of of IN 36297 1456 22 gray gray JJ 36297 1456 23 paper paper NN 36297 1456 24 , , , 36297 1456 25 and and CC 36297 1456 26 pasted paste VBN 36297 1456 27 respectively respectively RB 36297 1456 28 upon upon IN 36297 1456 29 white white JJ 36297 1456 30 and and CC 36297 1456 31 black black JJ 36297 1456 32 backgrounds background NNS 36297 1456 33 , , , 36297 1456 34 as as IN 36297 1456 35 in in IN 36297 1456 36 Fig Fig NNP 36297 1456 37 . . . 36297 1457 1 63 63 CD 36297 1457 2 . . . 36297 1458 1 It -PRON- PRP 36297 1458 2 will will MD 36297 1458 3 be be VB 36297 1458 4 apparent apparent JJ 36297 1458 5 that that IN 36297 1458 6 the the DT 36297 1458 7 one one CD 36297 1458 8 amid amid IN 36297 1458 9 the the DT 36297 1458 10 black black JJ 36297 1458 11 environment environment NN 36297 1458 12 appears appear VBZ 36297 1458 13 much much RB 36297 1458 14 brighter bright JJR 36297 1458 15 than than IN 36297 1458 16 the the DT 36297 1458 17 one one CD 36297 1458 18 ( ( -LRB- 36297 1458 19 same same JJ 36297 1458 20 gray gray NN 36297 1458 21 ) ) -RRB- 36297 1458 22 amid amid IN 36297 1458 23 the the DT 36297 1458 24 white white JJ 36297 1458 25 environment environment NN 36297 1458 26 . . . 36297 1459 1 This this DT 36297 1459 2 can can MD 36297 1459 3 be be VB 36297 1459 4 demonstrated demonstrate VBN 36297 1459 5 easily easily RB 36297 1459 6 to to IN 36297 1459 7 an an DT 36297 1459 8 audience audience NN 36297 1459 9 by by IN 36297 1459 10 means mean NNS 36297 1459 11 of of IN 36297 1459 12 a a DT 36297 1459 13 figure figure NN 36297 1459 14 two two CD 36297 1459 15 feet foot NNS 36297 1459 16 long long JJ 36297 1459 17 . . . 36297 1460 1 It -PRON- PRP 36297 1460 2 is be VBZ 36297 1460 3 interesting interesting JJ 36297 1460 4 to to TO 36297 1460 5 carry carry VB 36297 1460 6 the the DT 36297 1460 7 experiment experiment NN 36297 1460 8 further far RBR 36297 1460 9 and and CC 36297 1460 10 place place VB 36297 1460 11 a a DT 36297 1460 12 _ _ NNP 36297 1460 13 V V NNP 36297 1460 14 _ _ NNP 36297 1460 15 of of IN 36297 1460 16 much much RB 36297 1460 17 darker dark JJR 36297 1460 18 gray gray NN 36297 1460 19 on on IN 36297 1460 20 the the DT 36297 1460 21 black black JJ 36297 1460 22 background background NN 36297 1460 23 than than IN 36297 1460 24 the the DT 36297 1460 25 _ _ NNP 36297 1460 26 V V NNP 36297 1460 27 _ _ NNP 36297 1460 28 on on IN 36297 1460 29 the the DT 36297 1460 30 white white JJ 36297 1460 31 background background NN 36297 1460 32 . . . 36297 1461 1 The the DT 36297 1461 2 persistency persistency NN 36297 1461 3 of of IN 36297 1461 4 the the DT 36297 1461 5 illusion illusion NN 36297 1461 6 is be VBZ 36297 1461 7 found find VBN 36297 1461 8 to to TO 36297 1461 9 be be VB 36297 1461 10 remarkable remarkable JJ 36297 1461 11 , , , 36297 1461 12 for for IN 36297 1461 13 it -PRON- PRP 36297 1461 14 will will MD 36297 1461 15 exist exist VB 36297 1461 16 even even RB 36297 1461 17 when when WRB 36297 1461 18 the the DT 36297 1461 19 one one NN 36297 1461 20 _ _ NNP 36297 1461 21 V V NNP 36297 1461 22 _ _ NNP 36297 1461 23 is be VBZ 36297 1461 24 actually actually RB 36297 1461 25 a a DT 36297 1461 26 much much RB 36297 1461 27 darker dark JJR 36297 1461 28 gray gray JJ 36297 1461 29 than than IN 36297 1461 30 the the DT 36297 1461 31 other other JJ 36297 1461 32 . . . 36297 1462 1 To to TO 36297 1462 2 become become VB 36297 1462 3 convinced convinced JJ 36297 1462 4 that that IN 36297 1462 5 the the DT 36297 1462 6 two two CD 36297 1462 7 grays gray NNS 36297 1462 8 are be VBP 36297 1462 9 of of IN 36297 1462 10 the the DT 36297 1462 11 same same JJ 36297 1462 12 brightness brightness NN 36297 1462 13 in in IN 36297 1462 14 Fig Fig NNP 36297 1462 15 . . . 36297 1463 1 63 63 CD 36297 1463 2 , , , 36297 1463 3 it -PRON- PRP 36297 1463 4 is be VBZ 36297 1463 5 only only RB 36297 1463 6 necessary necessary JJ 36297 1463 7 to to TO 36297 1463 8 punch punch VB 36297 1463 9 two two CD 36297 1463 10 holes hole NNS 36297 1463 11 in in IN 36297 1463 12 a a DT 36297 1463 13 white white JJ 36297 1463 14 or or CC 36297 1463 15 gray gray JJ 36297 1463 16 card card NN 36297 1463 17 at at IN 36297 1463 18 such such PDT 36297 1463 19 a a DT 36297 1463 20 distance distance NN 36297 1463 21 apart apart RB 36297 1463 22 that that IN 36297 1463 23 they -PRON- PRP 36297 1463 24 will will MD 36297 1463 25 lie lie VB 36297 1463 26 respectively respectively RB 36297 1463 27 over over IN 36297 1463 28 portions portion NNS 36297 1463 29 of of IN 36297 1463 30 the the DT 36297 1463 31 two two CD 36297 1463 32 _ _ NNP 36297 1463 33 V_s v_s CD 36297 1463 34 when when WRB 36297 1463 35 the the DT 36297 1463 36 card card NN 36297 1463 37 is be VBZ 36297 1463 38 laid lay VBN 36297 1463 39 upon upon IN 36297 1463 40 Fig Fig NNP 36297 1463 41 . . . 36297 1464 1 63 63 CD 36297 1464 2 . . . 36297 1465 1 The the DT 36297 1465 2 grays gray NNS 36297 1465 3 in in IN 36297 1465 4 the the DT 36297 1465 5 holes hole NNS 36297 1465 6 should should MD 36297 1465 7 now now RB 36297 1465 8 appear appear VB 36297 1465 9 alike alike RB 36297 1465 10 because because IN 36297 1465 11 their -PRON- PRP$ 36297 1465 12 environments environment NNS 36297 1465 13 are be VBP 36297 1465 14 similar similar JJ 36297 1465 15 . . . 36297 1466 1 [ [ -LRB- 36297 1466 2 Illustration illustration NN 36297 1466 3 : : : 36297 1466 4 Fig Fig NNP 36297 1466 5 . . . 36297 1467 1 63.--Illustrating 63.--illustrating CD 36297 1467 2 brightness brightness NN 36297 1467 3 - - HYPH 36297 1467 4 contrast contrast NN 36297 1467 5 . . . 36297 1467 6 ] ] -RRB- 36297 1468 1 The the DT 36297 1468 2 importance importance NN 36297 1468 3 of of IN 36297 1468 4 contrasts contrast NNS 36297 1468 5 in in IN 36297 1468 6 brightness brightness NN 36297 1468 7 and and CC 36297 1468 8 in in IN 36297 1468 9 color color NN 36297 1468 10 can can MD 36297 1468 11 not not RB 36297 1468 12 be be VB 36297 1468 13 overemphasized overemphasize VBN 36297 1468 14 , , , 36297 1468 15 and and CC 36297 1468 16 it -PRON- PRP 36297 1468 17 appears appear VBZ 36297 1468 18 certain certain JJ 36297 1468 19 that that IN 36297 1468 20 no no DT 36297 1468 21 one one NN 36297 1468 22 can can MD 36297 1468 23 fully fully RB 36297 1468 24 realize realize VB 36297 1468 25 their -PRON- PRP$ 36297 1468 26 effectiveness effectiveness NN 36297 1468 27 without without IN 36297 1468 28 witnessing witness VBG 36297 1468 29 it -PRON- PRP 36297 1468 30 in in IN 36297 1468 31 a a DT 36297 1468 32 manner manner NN 36297 1468 33 similar similar JJ 36297 1468 34 to to IN 36297 1468 35 that that DT 36297 1468 36 suggested suggest VBN 36297 1468 37 in in IN 36297 1468 38 Fig Fig NNP 36297 1468 39 . . . 36297 1469 1 62 62 CD 36297 1469 2 . . . 36297 1470 1 [ [ -LRB- 36297 1470 2 Illustration illustration NN 36297 1470 3 : : : 36297 1470 4 Fig Fig NNP 36297 1470 5 . . . 36297 1471 1 64.--An 64.--an CD 36297 1471 2 effect effect NN 36297 1471 3 of of IN 36297 1471 4 brightness brightness NN 36297 1471 5 - - HYPH 36297 1471 6 contrast contrast NN 36297 1471 7 . . . 36297 1472 1 Note note VB 36297 1472 2 the the DT 36297 1472 3 darkening darkening NN 36297 1472 4 of of IN 36297 1472 5 the the DT 36297 1472 6 intersections intersection NNS 36297 1472 7 of of IN 36297 1472 8 the the DT 36297 1472 9 white white JJ 36297 1472 10 strips strip NNS 36297 1472 11 . . . 36297 1472 12 ] ] -RRB- 36297 1473 1 Many many JJ 36297 1473 2 illusions illusion NNS 36297 1473 3 of of IN 36297 1473 4 brightness brightness NN 36297 1473 5 - - HYPH 36297 1473 6 contrast contrast NN 36297 1473 7 are be VBP 36297 1473 8 visible visible JJ 36297 1473 9 on on IN 36297 1473 10 every every DT 36297 1473 11 hand hand NN 36297 1473 12 . . . 36297 1474 1 For for IN 36297 1474 2 example example NN 36297 1474 3 , , , 36297 1474 4 the the DT 36297 1474 5 point point NN 36297 1474 6 at at IN 36297 1474 7 which which WDT 36297 1474 8 the the DT 36297 1474 9 mullions mullion NNS 36297 1474 10 of of IN 36297 1474 11 a a DT 36297 1474 12 window window NN 36297 1474 13 cross cross NN 36297 1474 14 will will MD 36297 1474 15 be be VB 36297 1474 16 seen see VBN 36297 1474 17 to to TO 36297 1474 18 appear appear VB 36297 1474 19 brighter bright JJR 36297 1474 20 than than IN 36297 1474 21 the the DT 36297 1474 22 remaining remain VBG 36297 1474 23 portions portion NNS 36297 1474 24 of of IN 36297 1474 25 them -PRON- PRP 36297 1474 26 when when WRB 36297 1474 27 viewed view VBN 36297 1474 28 against against IN 36297 1474 29 a a DT 36297 1474 30 bright bright JJ 36297 1474 31 sky sky NN 36297 1474 32 . . . 36297 1475 1 Conversely conversely RB 36297 1475 2 , , , 36297 1475 3 in in IN 36297 1475 4 Fig Fig NNP 36297 1475 5 . . . 36297 1476 1 64 64 CD 36297 1476 2 , , , 36297 1476 3 dark dark JJ 36297 1476 4 spots spot NNS 36297 1476 5 appear appear VBP 36297 1476 6 where where WRB 36297 1476 7 the the DT 36297 1476 8 white white NNP 36297 1476 9 bars bar NNS 36297 1476 10 cross cross VBP 36297 1476 11 . . . 36297 1477 1 This this DT 36297 1477 2 is be VBZ 36297 1477 3 purely purely RB 36297 1477 4 an an DT 36297 1477 5 illusion illusion NN 36297 1477 6 and and CC 36297 1477 7 the the DT 36297 1477 8 same same JJ 36297 1477 9 type type NN 36297 1477 10 may may MD 36297 1477 11 be be VB 36297 1477 12 witnessed witness VBN 36297 1477 13 by by IN 36297 1477 14 the the DT 36297 1477 15 observant observant JJ 36297 1477 16 many many JJ 36297 1477 17 times time NNS 36297 1477 18 a a DT 36297 1477 19 day day NN 36297 1477 20 . . . 36297 1478 1 In in IN 36297 1478 2 Fig Fig NNP 36297 1478 3 . . . 36297 1479 1 64 64 CD 36297 1479 2 it -PRON- PRP 36297 1479 3 is be VBZ 36297 1479 4 of of IN 36297 1479 5 interest interest NN 36297 1479 6 to to TO 36297 1479 7 note note VB 36297 1479 8 that that IN 36297 1479 9 the the DT 36297 1479 10 illusion illusion NN 36297 1479 11 is be VBZ 36297 1479 12 weak weak JJ 36297 1479 13 for for IN 36297 1479 14 the the DT 36297 1479 15 crossing crossing NN 36297 1479 16 upon upon IN 36297 1479 17 which which WDT 36297 1479 18 the the DT 36297 1479 19 point point NN 36297 1479 20 of of IN 36297 1479 21 sight sight NN 36297 1479 22 rests rest NNS 36297 1479 23 , , , 36297 1479 24 but but CC 36297 1479 25 by by IN 36297 1479 26 averted avert VBN 36297 1479 27 vision vision NN 36297 1479 28 the the DT 36297 1479 29 illusion illusion NN 36297 1479 30 is be VBZ 36297 1479 31 prominent prominent JJ 36297 1479 32 for for IN 36297 1479 33 the the DT 36297 1479 34 other other JJ 36297 1479 35 crossings crossing NNS 36297 1479 36 . . . 36297 1480 1 This this DT 36297 1480 2 is be VBZ 36297 1480 3 one one CD 36297 1480 4 of of IN 36297 1480 5 the the DT 36297 1480 6 effects effect NNS 36297 1480 7 which which WDT 36297 1480 8 depends depend VBZ 36297 1480 9 upon upon IN 36297 1480 10 the the DT 36297 1480 11 location location NN 36297 1480 12 in in IN 36297 1480 13 the the DT 36297 1480 14 visual visual JJ 36297 1480 15 field field NN 36297 1480 16 . . . 36297 1481 1 No no DT 36297 1481 2 brightness brightness NN 36297 1481 3 - - HYPH 36297 1481 4 contrasts contrast NNS 36297 1481 5 are be VBP 36297 1481 6 seen see VBN 36297 1481 7 correctly correctly RB 36297 1481 8 and and CC 36297 1481 9 often often RB 36297 1481 10 the the DT 36297 1481 11 illusions illusion NNS 36297 1481 12 are be VBP 36297 1481 13 very very RB 36297 1481 14 striking striking JJ 36297 1481 15 . . . 36297 1482 1 If if IN 36297 1482 2 a a DT 36297 1482 3 series series NN 36297 1482 4 of of IN 36297 1482 5 gray gray JJ 36297 1482 6 papers paper NNS 36297 1482 7 is be VBZ 36297 1482 8 arranged arrange VBN 36297 1482 9 from from IN 36297 1482 10 black black JJ 36297 1482 11 to to IN 36297 1482 12 white white JJ 36297 1482 13 , , , 36297 1482 14 with with IN 36297 1482 15 the the DT 36297 1482 16 successive successive JJ 36297 1482 17 pieces piece NNS 36297 1482 18 overlapped overlap VBD 36297 1482 19 or or CC 36297 1482 20 otherwise otherwise RB 36297 1482 21 juxtaposed juxtapose VBN 36297 1482 22 , , , 36297 1482 23 a a DT 36297 1482 24 series series NN 36297 1482 25 of of IN 36297 1482 26 steps step NNS 36297 1482 27 of of IN 36297 1482 28 uniform uniform JJ 36297 1482 29 brightness brightness NN 36297 1482 30 is be VBZ 36297 1482 31 not not RB 36297 1482 32 seen see VBN 36297 1482 33 . . . 36297 1483 1 An an DT 36297 1483 2 instrument instrument NN 36297 1483 3 would would MD 36297 1483 4 determine determine VB 36297 1483 5 the the DT 36297 1483 6 brightness brightness NN 36297 1483 7 of of IN 36297 1483 8 each each DT 36297 1483 9 as as IN 36297 1483 10 uniform uniform JJ 36297 1483 11 , , , 36297 1483 12 but but CC 36297 1483 13 to to IN 36297 1483 14 the the DT 36297 1483 15 eye eye NN 36297 1483 16 the the DT 36297 1483 17 series series NN 36297 1483 18 would would MD 36297 1483 19 appear appear VB 36297 1483 20 somewhat somewhat RB 36297 1483 21 " " `` 36297 1483 22 fluted fluted JJ 36297 1483 23 . . . 36297 1483 24 " " '' 36297 1484 1 That that RB 36297 1484 2 is is RB 36297 1484 3 , , , 36297 1484 4 where where WRB 36297 1484 5 a a DT 36297 1484 6 light light JJ 36297 1484 7 gray gray NN 36297 1484 8 joined join VBD 36297 1484 9 a a DT 36297 1484 10 darker dark JJR 36297 1484 11 gray gray JJ 36297 1484 12 the the DT 36297 1484 13 edge edge NN 36297 1484 14 of of IN 36297 1484 15 the the DT 36297 1484 16 former former JJ 36297 1484 17 would would MD 36297 1484 18 appear appear VB 36297 1484 19 lighter light JJR 36297 1484 20 than than IN 36297 1484 21 its -PRON- PRP$ 36297 1484 22 actual actual JJ 36297 1484 23 brightness brightness NN 36297 1484 24 , , , 36297 1484 25 and and CC 36297 1484 26 the the DT 36297 1484 27 edge edge NN 36297 1484 28 of of IN 36297 1484 29 the the DT 36297 1484 30 darker dark JJR 36297 1484 31 gray gray NN 36297 1484 32 would would MD 36297 1484 33 appear appear VB 36297 1484 34 darker dark JJR 36297 1484 35 than than IN 36297 1484 36 it -PRON- PRP 36297 1484 37 should should MD 36297 1484 38 . . . 36297 1485 1 This this DT 36297 1485 2 may may MD 36297 1485 3 also also RB 36297 1485 4 be be VB 36297 1485 5 demonstrated demonstrate VBN 36297 1485 6 by by IN 36297 1485 7 laying lay VBG 36297 1485 8 a a DT 36297 1485 9 dozen dozen NN 36297 1485 10 pieces piece NNS 36297 1485 11 of of IN 36297 1485 12 white white JJ 36297 1485 13 tissue tissue NN 36297 1485 14 paper paper NN 36297 1485 15 in in IN 36297 1485 16 a a DT 36297 1485 17 pile pile NN 36297 1485 18 in in IN 36297 1485 19 such such PDT 36297 1485 20 a a DT 36297 1485 21 manner manner NN 36297 1485 22 that that WDT 36297 1485 23 a a DT 36297 1485 24 series series NN 36297 1485 25 of of IN 36297 1485 26 1 1 CD 36297 1485 27 , , , 36297 1485 28 2 2 CD 36297 1485 29 , , , 36297 1485 30 3 3 CD 36297 1485 31 , , , 36297 1485 32 4 4 CD 36297 1485 33 , , , 36297 1485 34 etc etc FW 36297 1485 35 . . NN 36297 1485 36 , , , 36297 1485 37 thickness thickness NN 36297 1485 38 would would MD 36297 1485 39 be be VB 36297 1485 40 produced produce VBN 36297 1485 41 . . . 36297 1486 1 On on IN 36297 1486 2 viewing view VBG 36297 1486 3 this this DT 36297 1486 4 by by IN 36297 1486 5 transmitted transmit VBN 36297 1486 6 light light NN 36297 1486 7 a a DT 36297 1486 8 series series NN 36297 1486 9 of of IN 36297 1486 10 grays gray NNS 36297 1486 11 is be VBZ 36297 1486 12 seen see VBN 36297 1486 13 , , , 36297 1486 14 and and CC 36297 1486 15 the the DT 36297 1486 16 effect effect NN 36297 1486 17 of of IN 36297 1486 18 contrast contrast NN 36297 1486 19 is be VBZ 36297 1486 20 quite quite RB 36297 1486 21 apparent apparent JJ 36297 1486 22 . . . 36297 1487 1 Such such PDT 36297 1487 2 a a DT 36297 1487 3 pattern pattern NN 36297 1487 4 can can MD 36297 1487 5 be be VB 36297 1487 6 made make VBN 36297 1487 7 photographically photographically RB 36297 1487 8 by by IN 36297 1487 9 rotating rotate VBG 36297 1487 10 before before IN 36297 1487 11 a a DT 36297 1487 12 photographic photographic JJ 36297 1487 13 plate plate NN 36297 1487 14 a a DT 36297 1487 15 disk disk NN 36297 1487 16 with with IN 36297 1487 17 openings opening NNS 36297 1487 18 arranged arrange VBN 36297 1487 19 properly properly RB 36297 1487 20 in in IN 36297 1487 21 steps step NNS 36297 1487 22 . . . 36297 1488 1 Many many JJ 36297 1488 2 demonstrations demonstration NNS 36297 1488 3 of of IN 36297 1488 4 the the DT 36297 1488 5 chief chief JJ 36297 1488 6 illusion illusion NN 36297 1488 7 of of IN 36297 1488 8 brightness brightness NN 36297 1488 9 - - HYPH 36297 1488 10 contrast contrast NN 36297 1488 11 are be VBP 36297 1488 12 visible visible JJ 36297 1488 13 at at IN 36297 1488 14 night night NN 36297 1488 15 under under IN 36297 1488 16 glaring glare VBG 36297 1488 17 lighting lighting NN 36297 1488 18 conditions condition NNS 36297 1488 19 . . . 36297 1489 1 It -PRON- PRP 36297 1489 2 is be VBZ 36297 1489 3 difficult difficult JJ 36297 1489 4 or or CC 36297 1489 5 impossible impossible JJ 36297 1489 6 to to TO 36297 1489 7 see see VB 36297 1489 8 objects object NNS 36297 1489 9 beyond beyond IN 36297 1489 10 automobile automobile NN 36297 1489 11 headlights headlight NNS 36297 1489 12 , , , 36297 1489 13 and and CC 36297 1489 14 adjacent adjacent JJ 36297 1489 15 to to IN 36297 1489 16 them -PRON- PRP 36297 1489 17 , , , 36297 1489 18 in in IN 36297 1489 19 the the DT 36297 1489 20 visual visual JJ 36297 1489 21 field field NN 36297 1489 22 . . . 36297 1490 1 Objects object NNS 36297 1490 2 similarly similarly RB 36297 1490 3 located locate VBN 36297 1490 4 in in IN 36297 1490 5 respect respect NN 36297 1490 6 to to IN 36297 1490 7 any any DT 36297 1490 8 surface surface NN 36297 1490 9 sufficiently sufficiently RB 36297 1490 10 bright bright JJ 36297 1490 11 are be VBP 36297 1490 12 more more RBR 36297 1490 13 or or CC 36297 1490 14 less less RBR 36297 1490 15 obscured obscure VBN 36297 1490 16 . . . 36297 1491 1 Characters character NNS 36297 1491 2 written write VBN 36297 1491 3 upon upon IN 36297 1491 4 a a DT 36297 1491 5 blackboard blackboard NN 36297 1491 6 , , , 36297 1491 7 placed place VBN 36297 1491 8 between between IN 36297 1491 9 two two CD 36297 1491 10 windows window NNS 36297 1491 11 , , , 36297 1491 12 may may MD 36297 1491 13 be be VB 36297 1491 14 invisible invisible JJ 36297 1491 15 if if IN 36297 1491 16 the the DT 36297 1491 17 surfaces surface NNS 36297 1491 18 seen see VBN 36297 1491 19 through through IN 36297 1491 20 the the DT 36297 1491 21 window window NN 36297 1491 22 are be VBP 36297 1491 23 quite quite RB 36297 1491 24 bright bright JJ 36297 1491 25 , , , 36297 1491 26 unless unless IN 36297 1491 27 a a DT 36297 1491 28 sufficient sufficient JJ 36297 1491 29 quantity quantity NN 36297 1491 30 of of IN 36297 1491 31 light light NN 36297 1491 32 reaches reach VBZ 36297 1491 33 the the DT 36297 1491 34 blackboard blackboard NN 36297 1491 35 from from IN 36297 1491 36 other other JJ 36297 1491 37 sources source NNS 36297 1491 38 . . . 36297 1492 1 Stage stage NN 36297 1492 2 - - HYPH 36297 1492 3 settings setting NNS 36297 1492 4 have have VBP 36297 1492 5 been be VBN 36297 1492 6 changed change VBN 36297 1492 7 in in IN 36297 1492 8 perfect perfect JJ 36297 1492 9 obscurity obscurity NN 36297 1492 10 before before IN 36297 1492 11 an an DT 36297 1492 12 audience audience NN 36297 1492 13 by by IN 36297 1492 14 turning turn VBG 36297 1492 15 on on RP 36297 1492 16 a a DT 36297 1492 17 row row NN 36297 1492 18 of of IN 36297 1492 19 bright bright JJ 36297 1492 20 lights light NNS 36297 1492 21 at at IN 36297 1492 22 the the DT 36297 1492 23 edge edge NN 36297 1492 24 of of IN 36297 1492 25 the the DT 36297 1492 26 stage stage NN 36297 1492 27 - - HYPH 36297 1492 28 opening opening NN 36297 1492 29 . . . 36297 1493 1 The the DT 36297 1493 2 term term NN 36297 1493 3 " " `` 36297 1493 4 blinding blind VBG 36297 1493 5 light light JJ 36297 1493 6 " " '' 36297 1493 7 owes owe VBZ 36297 1493 8 its -PRON- PRP$ 36297 1493 9 origin origin NN 36297 1493 10 to to IN 36297 1493 11 this this DT 36297 1493 12 effect effect NN 36297 1493 13 of of IN 36297 1493 14 brightness brightness NN 36297 1493 15 - - HYPH 36297 1493 16 contrast contrast NN 36297 1493 17 . . . 36297 1494 1 The the DT 36297 1494 2 line line NN 36297 1494 3 of of IN 36297 1494 4 juncture juncture NN 36297 1494 5 between between IN 36297 1494 6 a a DT 36297 1494 7 bright bright NN 36297 1494 8 and and CC 36297 1494 9 a a DT 36297 1494 10 dark dark JJ 36297 1494 11 surface surface NN 36297 1494 12 may may MD 36297 1494 13 not not RB 36297 1494 14 be be VB 36297 1494 15 seen see VBN 36297 1494 16 as as IN 36297 1494 17 a a DT 36297 1494 18 sharp sharp JJ 36297 1494 19 line line NN 36297 1494 20 , , , 36297 1494 21 but but CC 36297 1494 22 as as IN 36297 1494 23 a a DT 36297 1494 24 narrow narrow JJ 36297 1494 25 band band NN 36297 1494 26 of of IN 36297 1494 27 gray gray NN 36297 1494 28 . . . 36297 1495 1 When when WRB 36297 1495 2 this this DT 36297 1495 3 is be VBZ 36297 1495 4 true true JJ 36297 1495 5 it -PRON- PRP 36297 1495 6 is be VBZ 36297 1495 7 possible possible JJ 36297 1495 8 that that IN 36297 1495 9 an an DT 36297 1495 10 undue undue JJ 36297 1495 11 amount amount NN 36297 1495 12 of of IN 36297 1495 13 area area NN 36297 1495 14 is be VBZ 36297 1495 15 credited credit VBN 36297 1495 16 to to IN 36297 1495 17 the the DT 36297 1495 18 white white NNP 36297 1495 19 . . . 36297 1496 1 In in IN 36297 1496 2 preceding precede VBG 36297 1496 3 paragraphs paragraph NNS 36297 1496 4 we -PRON- PRP 36297 1496 5 have have VBP 36297 1496 6 seen see VBN 36297 1496 7 the the DT 36297 1496 8 peculiar peculiar JJ 36297 1496 9 effect effect NN 36297 1496 10 at at IN 36297 1496 11 the the DT 36297 1496 12 border border NN 36297 1496 13 - - HYPH 36297 1496 14 lines line NNS 36297 1496 15 of of IN 36297 1496 16 a a DT 36297 1496 17 series series NN 36297 1496 18 of of IN 36297 1496 19 grays gray NNS 36297 1496 20 . . . 36297 1497 1 This this DT 36297 1497 2 may may MD 36297 1497 3 have have VB 36297 1497 4 something something NN 36297 1497 5 to to TO 36297 1497 6 do do VB 36297 1497 7 with with IN 36297 1497 8 the the DT 36297 1497 9 estimate estimate NN 36297 1497 10 ; ; : 36297 1497 11 however however RB 36297 1497 12 , , , 36297 1497 13 irradiation irradiation NN 36297 1497 14 may may MD 36297 1497 15 be be VB 36297 1497 16 due due IN 36297 1497 17 to to IN 36297 1497 18 excitation excitation NN 36297 1497 19 of of IN 36297 1497 20 retinal retinal JJ 36297 1497 21 rods rod NNS 36297 1497 22 and and CC 36297 1497 23 cones cone NNS 36297 1497 24 adjacent adjacent JJ 36297 1497 25 to to IN 36297 1497 26 , , , 36297 1497 27 but but CC 36297 1497 28 not not RB 36297 1497 29 actually actually RB 36297 1497 30 within within IN 36297 1497 31 the the DT 36297 1497 32 bright bright JJ 36297 1497 33 image image NN 36297 1497 34 . . . 36297 1498 1 A a DT 36297 1498 2 remarkable remarkable JJ 36297 1498 3 effect effect NN 36297 1498 4 which which WDT 36297 1498 5 may may MD 36297 1498 6 be be VB 36297 1498 7 partially partially RB 36297 1498 8 attributable attributable JJ 36297 1498 9 to to IN 36297 1498 10 irradiation irradiation NN 36297 1498 11 can can MD 36297 1498 12 be be VB 36297 1498 13 produced produce VBN 36297 1498 14 by by IN 36297 1498 15 crossing cross VBG 36297 1498 16 a a DT 36297 1498 17 grating grating NN 36297 1498 18 of of IN 36297 1498 19 parallel parallel JJ 36297 1498 20 black black JJ 36297 1498 21 lines line NNS 36297 1498 22 with with IN 36297 1498 23 an an DT 36297 1498 24 oblique oblique JJ 36297 1498 25 black black JJ 36297 1498 26 line line NN 36297 1498 27 . . . 36297 1499 1 At at IN 36297 1499 2 the the DT 36297 1499 3 actual actual JJ 36297 1499 4 crossings crossing NNS 36297 1499 5 the the DT 36297 1499 6 black black NN 36297 1499 7 appears appear VBZ 36297 1499 8 to to TO 36297 1499 9 run run VB 36297 1499 10 up up RP 36297 1499 11 the the DT 36297 1499 12 narrow narrow JJ 36297 1499 13 angle angle NN 36297 1499 14 somewhat somewhat RB 36297 1499 15 like like IN 36297 1499 16 ink ink NN 36297 1499 17 would would MD 36297 1499 18 under under IN 36297 1499 19 the the DT 36297 1499 20 influence influence NN 36297 1499 21 of of IN 36297 1499 22 surface surface NN 36297 1499 23 tension tension NN 36297 1499 24 . . . 36297 1500 1 This this DT 36297 1500 2 is be VBZ 36297 1500 3 particularly particularly RB 36297 1500 4 striking striking JJ 36297 1500 5 when when WRB 36297 1500 6 two two CD 36297 1500 7 gratings grating NNS 36297 1500 8 or or CC 36297 1500 9 even even RB 36297 1500 10 two two CD 36297 1500 11 ordinary ordinary JJ 36297 1500 12 fly fly NN 36297 1500 13 - - HYPH 36297 1500 14 screens screen NNS 36297 1500 15 are be VBP 36297 1500 16 superposed superpose VBN 36297 1500 17 . . . 36297 1501 1 The the DT 36297 1501 2 effect effect NN 36297 1501 3 is be VBZ 36297 1501 4 visible visible JJ 36297 1501 5 when when WRB 36297 1501 6 passing pass VBG 36297 1501 7 two two CD 36297 1501 8 picket picket NN 36297 1501 9 - - HYPH 36297 1501 10 fences fence NNS 36297 1501 11 , , , 36297 1501 12 one one CD 36297 1501 13 beyond beyond IN 36297 1501 14 the the DT 36297 1501 15 other other JJ 36297 1501 16 . . . 36297 1502 1 If if IN 36297 1502 2 a a DT 36297 1502 3 dark dark JJ 36297 1502 4 object object NN 36297 1502 5 is be VBZ 36297 1502 6 held hold VBN 36297 1502 7 so so IN 36297 1502 8 that that IN 36297 1502 9 a a DT 36297 1502 10 straight straight JJ 36297 1502 11 edge edge NN 36297 1502 12 appears appear VBZ 36297 1502 13 to to TO 36297 1502 14 cross cross VB 36297 1502 15 a a DT 36297 1502 16 candle candle NN 36297 1502 17 - - HYPH 36297 1502 18 flame flame NN 36297 1502 19 or or CC 36297 1502 20 other other JJ 36297 1502 21 light light JJ 36297 1502 22 - - HYPH 36297 1502 23 source source NN 36297 1502 24 , , , 36297 1502 25 at at IN 36297 1502 26 this this DT 36297 1502 27 portion portion NN 36297 1502 28 the the DT 36297 1502 29 straight straight JJ 36297 1502 30 edge edge NN 36297 1502 31 will will MD 36297 1502 32 appear appear VB 36297 1502 33 to to TO 36297 1502 34 have have VB 36297 1502 35 a a DT 36297 1502 36 notch notch NN 36297 1502 37 in in IN 36297 1502 38 it -PRON- PRP 36297 1502 39 . . . 36297 1503 1 Irradiation irradiation NN 36297 1503 2 in in IN 36297 1503 3 general general JJ 36297 1503 4 has have VBZ 36297 1503 5 been be VBN 36297 1503 6 defined define VBN 36297 1503 7 as as IN 36297 1503 8 the the DT 36297 1503 9 lateral lateral JJ 36297 1503 10 diffusion diffusion NN 36297 1503 11 of of IN 36297 1503 12 nervous nervous JJ 36297 1503 13 stimuli stimulus NNS 36297 1503 14 beyond beyond IN 36297 1503 15 the the DT 36297 1503 16 actual actual JJ 36297 1503 17 stimulus stimulus NN 36297 1503 18 . . . 36297 1504 1 It -PRON- PRP 36297 1504 2 is be VBZ 36297 1504 3 not not RB 36297 1504 4 confined confine VBN 36297 1504 5 to to IN 36297 1504 6 the the DT 36297 1504 7 visual visual JJ 36297 1504 8 sense sense NN 36297 1504 9 but but CC 36297 1504 10 irradiation irradiation NN 36297 1504 11 for for IN 36297 1504 12 this this DT 36297 1504 13 sense sense NN 36297 1504 14 is be VBZ 36297 1504 15 a a DT 36297 1504 16 term term NN 36297 1504 17 applied apply VBN 36297 1504 18 to to IN 36297 1504 19 the the DT 36297 1504 20 apparent apparent JJ 36297 1504 21 enlargement enlargement NN 36297 1504 22 of of IN 36297 1504 23 bright bright JJ 36297 1504 24 surfaces surface NNS 36297 1504 25 at at IN 36297 1504 26 the the DT 36297 1504 27 expense expense NN 36297 1504 28 of of IN 36297 1504 29 adjacent adjacent JJ 36297 1504 30 darker darker NN 36297 1504 31 surfaces surface NNS 36297 1504 32 . . . 36297 1505 1 The the DT 36297 1505 2 crescent crescent NN 36297 1505 3 of of IN 36297 1505 4 the the DT 36297 1505 5 new new JJ 36297 1505 6 moon moon NN 36297 1505 7 appears appear VBZ 36297 1505 8 larger large JJR 36297 1505 9 in in IN 36297 1505 10 radius radius NN 36297 1505 11 than than IN 36297 1505 12 the the DT 36297 1505 13 faint faint JJ 36297 1505 14 outline outline NN 36297 1505 15 of of IN 36297 1505 16 the the DT 36297 1505 17 darker dark JJR 36297 1505 18 portion portion NN 36297 1505 19 which which WDT 36297 1505 20 is be VBZ 36297 1505 21 feebly feebly RB 36297 1505 22 illuminated illuminate VBN 36297 1505 23 chiefly chiefly RB 36297 1505 24 by by IN 36297 1505 25 light light NN 36297 1505 26 reflected reflect VBN 36297 1505 27 from from IN 36297 1505 28 the the DT 36297 1505 29 earth earth NN 36297 1505 30 's 's POS 36297 1505 31 surface surface NN 36297 1505 32 . . . 36297 1506 1 A a DT 36297 1506 2 filament filament NN 36297 1506 3 of of IN 36297 1506 4 a a DT 36297 1506 5 lamp lamp NN 36297 1506 6 appears appear VBZ 36297 1506 7 to to TO 36297 1506 8 grow grow VB 36297 1506 9 in in IN 36297 1506 10 size size NN 36297 1506 11 as as IN 36297 1506 12 the the DT 36297 1506 13 current current NN 36297 1506 14 through through IN 36297 1506 15 it -PRON- PRP 36297 1506 16 is be VBZ 36297 1506 17 slowly slowly RB 36297 1506 18 increased increase VBN 36297 1506 19 from from IN 36297 1506 20 a a DT 36297 1506 21 zero zero CD 36297 1506 22 value value NN 36297 1506 23 ; ; : 36297 1506 24 that that RB 36297 1506 25 is is RB 36297 1506 26 , , , 36297 1506 27 as as IN 36297 1506 28 it -PRON- PRP 36297 1506 29 increases increase VBZ 36297 1506 30 in in IN 36297 1506 31 brightness brightness NN 36297 1506 32 . . . 36297 1507 1 In in IN 36297 1507 2 Fig Fig NNP 36297 1507 3 . . . 36297 1508 1 65 65 CD 36297 1508 2 the the DT 36297 1508 3 small small JJ 36297 1508 4 inner inner JJ 36297 1508 5 squares square NNS 36297 1508 6 are be VBP 36297 1508 7 of of IN 36297 1508 8 the the DT 36297 1508 9 same same JJ 36297 1508 10 size size NN 36297 1508 11 but but CC 36297 1508 12 the the DT 36297 1508 13 white white NNP 36297 1508 14 square square NNP 36297 1508 15 appears appear VBZ 36297 1508 16 larger large JJR 36297 1508 17 than than IN 36297 1508 18 the the DT 36297 1508 19 black black JJ 36297 1508 20 one one NN 36297 1508 21 . . . 36297 1509 1 It -PRON- PRP 36297 1509 2 seems seem VBZ 36297 1509 3 that that IN 36297 1509 4 this this DT 36297 1509 5 apparent apparent JJ 36297 1509 6 increase increase NN 36297 1509 7 is be VBZ 36297 1509 8 made make VBN 36297 1509 9 at at IN 36297 1509 10 the the DT 36297 1509 11 expense expense NN 36297 1509 12 of of IN 36297 1509 13 the the DT 36297 1509 14 adjacent adjacent JJ 36297 1509 15 dark dark JJ 36297 1509 16 area area NN 36297 1509 17 . . . 36297 1510 1 This this DT 36297 1510 2 phenomenon phenomenon NN 36297 1510 3 or or CC 36297 1510 4 illusion illusion NN 36297 1510 5 is be VBZ 36297 1510 6 strongest strong JJS 36297 1510 7 when when WRB 36297 1510 8 the the DT 36297 1510 9 brightness brightness NN 36297 1510 10 is be VBZ 36297 1510 11 most most RBS 36297 1510 12 intense intense JJ 36297 1510 13 , , , 36297 1510 14 and and CC 36297 1510 15 is be VBZ 36297 1510 16 said say VBN 36297 1510 17 to to TO 36297 1510 18 be be VB 36297 1510 19 greatest great JJS 36297 1510 20 when when WRB 36297 1510 21 the the DT 36297 1510 22 accommodation accommodation NN 36297 1510 23 is be VBZ 36297 1510 24 imperfect imperfect JJ 36297 1510 25 . . . 36297 1511 1 A a DT 36297 1511 2 very very RB 36297 1511 3 intense intense JJ 36297 1511 4 light light NN 36297 1511 5 - - HYPH 36297 1511 6 source source NN 36297 1511 7 may may MD 36297 1511 8 appear appear VB 36297 1511 9 many many JJ 36297 1511 10 times time NNS 36297 1511 11 larger large JJR 36297 1511 12 than than IN 36297 1511 13 its -PRON- PRP$ 36297 1511 14 actual actual JJ 36297 1511 15 physical physical JJ 36297 1511 16 size size NN 36297 1511 17 . . . 36297 1512 1 [ [ -LRB- 36297 1512 2 Illustration illustration NN 36297 1512 3 : : : 36297 1512 4 Fig Fig NNP 36297 1512 5 . . . 36297 1513 1 65.--The 65.--the CD 36297 1513 2 phenomenon phenomenon NN 36297 1513 3 of of IN 36297 1513 4 irradiation irradiation NN 36297 1513 5 . . . 36297 1513 6 ] ] -RRB- 36297 1514 1 Doubtless doubtless RB 36297 1514 2 a a DT 36297 1514 3 number number NN 36297 1514 4 of of IN 36297 1514 5 factors factor NNS 36297 1514 6 may may MD 36297 1514 7 play play VB 36297 1514 8 a a DT 36297 1514 9 part part NN 36297 1514 10 in in IN 36297 1514 11 this this DT 36297 1514 12 phenomenon phenomenon NN 36297 1514 13 . . . 36297 1515 1 It -PRON- PRP 36297 1515 2 appears appear VBZ 36297 1515 3 possible possible JJ 36297 1515 4 that that IN 36297 1515 5 there there EX 36297 1515 6 is be VBZ 36297 1515 7 a a DT 36297 1515 8 rapid rapid JJ 36297 1515 9 spreading spreading NN 36297 1515 10 of of IN 36297 1515 11 the the DT 36297 1515 12 excitation excitation NN 36297 1515 13 over over IN 36297 1515 14 the the DT 36297 1515 15 retina retina NNP 36297 1515 16 extending extend VBG 36297 1515 17 quite quite RB 36297 1515 18 beyond beyond IN 36297 1515 19 the the DT 36297 1515 20 border border NN 36297 1515 21 of of IN 36297 1515 22 the the DT 36297 1515 23 more more RBR 36297 1515 24 intensely intensely RB 36297 1515 25 stimulated stimulate VBN 36297 1515 26 region region NN 36297 1515 27 , , , 36297 1515 28 but but CC 36297 1515 29 this this DT 36297 1515 30 must must MD 36297 1515 31 be be VB 36297 1515 32 practically practically RB 36297 1515 33 instantaneous instantaneous JJ 36297 1515 34 in in IN 36297 1515 35 order order NN 36297 1515 36 to to TO 36297 1515 37 satisfy satisfy VB 36297 1515 38 results result NNS 36297 1515 39 of of IN 36297 1515 40 experiments experiment NNS 36297 1515 41 . . . 36297 1516 1 Eye eye NN 36297 1516 2 - - HYPH 36297 1516 3 movements movement NNS 36297 1516 4 may may MD 36297 1516 5 play play VB 36297 1516 6 some some DT 36297 1516 7 part part NN 36297 1516 8 for for IN 36297 1516 9 , , , 36297 1516 10 despite despite IN 36297 1516 11 the the DT 36297 1516 12 most most RBS 36297 1516 13 serious serious JJ 36297 1516 14 efforts effort NNS 36297 1516 15 to to TO 36297 1516 16 fixate fixate VB 36297 1516 17 the the DT 36297 1516 18 point point NN 36297 1516 19 of of IN 36297 1516 20 sight sight NN 36297 1516 21 , , , 36297 1516 22 a a DT 36297 1516 23 fringe fringe NN 36297 1516 24 will will MD 36297 1516 25 appear appear VB 36297 1516 26 on on IN 36297 1516 27 the the DT 36297 1516 28 borders border NNS 36297 1516 29 of of IN 36297 1516 30 images image NNS 36297 1516 31 which which WDT 36297 1516 32 is be VBZ 36297 1516 33 certainly certainly RB 36297 1516 34 due due JJ 36297 1516 35 to to IN 36297 1516 36 involuntary involuntary JJ 36297 1516 37 eye eye NN 36297 1516 38 - - HYPH 36297 1516 39 movements movement NNS 36297 1516 40 . . . 36297 1517 1 Irradiation irradiation NN 36297 1517 2 has have VBZ 36297 1517 3 also also RB 36297 1517 4 been be VBN 36297 1517 5 ascribed ascribe VBN 36297 1517 6 to to IN 36297 1517 7 spherical spherical JJ 36297 1517 8 aberration aberration NN 36297 1517 9 in in IN 36297 1517 10 the the DT 36297 1517 11 eye eye NN 36297 1517 12 - - HYPH 36297 1517 13 lens lens NN 36297 1517 14 and and CC 36297 1517 15 to to IN 36297 1517 16 diffraction diffraction NN 36297 1517 17 of of IN 36297 1517 18 light light NN 36297 1517 19 at at IN 36297 1517 20 the the DT 36297 1517 21 pupil pupil NN 36297 1517 22 . . . 36297 1518 1 Printed printed JJ 36297 1518 2 type type NN 36297 1518 3 appears appear VBZ 36297 1518 4 considerably considerably RB 36297 1518 5 reduced reduce VBN 36297 1518 6 in in IN 36297 1518 7 size size NN 36297 1518 8 when when WRB 36297 1518 9 the the DT 36297 1518 10 pupil pupil NN 36297 1518 11 is be VBZ 36297 1518 12 dilated dilate VBN 36297 1518 13 with with IN 36297 1518 14 atropin atropin JJ 36297 1518 15 and and CC 36297 1518 16 is be VBZ 36297 1518 17 restored restore VBN 36297 1518 18 to to IN 36297 1518 19 normal normal JJ 36297 1518 20 appearance appearance NN 36297 1518 21 when when WRB 36297 1518 22 a a DT 36297 1518 23 small small JJ 36297 1518 24 artificial artificial JJ 36297 1518 25 pupil pupil NN 36297 1518 26 is be VBZ 36297 1518 27 placed place VBN 36297 1518 28 before before IN 36297 1518 29 the the DT 36297 1518 30 dilated dilated JJ 36297 1518 31 pupil pupil NN 36297 1518 32 . . . 36297 1519 1 It -PRON- PRP 36297 1519 2 has have VBZ 36297 1519 3 been be VBN 36297 1519 4 suggested suggest VBN 36297 1519 5 that that IN 36297 1519 6 chromatic chromatic JJ 36297 1519 7 aberration aberration NN 36297 1519 8 in in IN 36297 1519 9 the the DT 36297 1519 10 eye eye NN 36297 1519 11 - - HYPH 36297 1519 12 lens lens NN 36297 1519 13 is be VBZ 36297 1519 14 a a DT 36297 1519 15 contributory contributory JJ 36297 1519 16 cause cause NN 36297 1519 17 , , , 36297 1519 18 but but CC 36297 1519 19 this this DT 36297 1519 20 can can MD 36297 1519 21 not not RB 36297 1519 22 be be VB 36297 1519 23 very very RB 36297 1519 24 important important JJ 36297 1519 25 , , , 36297 1519 26 for for IN 36297 1519 27 the the DT 36297 1519 28 illusion illusion NN 36297 1519 29 is be VBZ 36297 1519 30 visible visible JJ 36297 1519 31 with with IN 36297 1519 32 monochromatic monochromatic JJ 36297 1519 33 light light NN 36297 1519 34 which which WDT 36297 1519 35 eliminates eliminate VBZ 36297 1519 36 chromatic chromatic JJ 36297 1519 37 aberration aberration NN 36297 1519 38 . . . 36297 1520 1 The the DT 36297 1520 2 experimental experimental JJ 36297 1520 3 evidence evidence NN 36297 1520 4 appears appear VBZ 36297 1520 5 to to TO 36297 1520 6 indicate indicate VB 36297 1520 7 that that IN 36297 1520 8 the the DT 36297 1520 9 phenomenon phenomenon NN 36297 1520 10 is be VBZ 36297 1520 11 of of IN 36297 1520 12 a a DT 36297 1520 13 physical physical JJ 36297 1520 14 nature nature NN 36297 1520 15 . . . 36297 1521 1 There there EX 36297 1521 2 are be VBP 36297 1521 3 variations variation NNS 36297 1521 4 in in IN 36297 1521 5 the the DT 36297 1521 6 effects effect NNS 36297 1521 7 attributable attributable JJ 36297 1521 8 to to IN 36297 1521 9 radiation radiation NN 36297 1521 10 , , , 36297 1521 11 and and CC 36297 1521 12 it -PRON- PRP 36297 1521 13 is be VBZ 36297 1521 14 difficult difficult JJ 36297 1521 15 to to TO 36297 1521 16 reduce reduce VB 36297 1521 17 them -PRON- PRP 36297 1521 18 to to IN 36297 1521 19 simple simple JJ 36297 1521 20 terms term NNS 36297 1521 21 . . . 36297 1522 1 Perhaps perhaps RB 36297 1522 2 it -PRON- PRP 36297 1522 3 may may MD 36297 1522 4 aid aid VB 36297 1522 5 the the DT 36297 1522 6 reader reader NN 36297 1522 7 to to TO 36297 1522 8 have have VB 36297 1522 9 before before IN 36297 1522 10 him -PRON- PRP 36297 1522 11 the the DT 36297 1522 12 classification classification NN 36297 1522 13 presented present VBN 36297 1522 14 by by IN 36297 1522 15 Boswell Boswell NNP 36297 1522 16 . . . 36297 1523 1 [ [ -LRB- 36297 1523 2 4 4 CD 36297 1523 3 ] ] -RRB- 36297 1523 4 He -PRON- PRP 36297 1523 5 describes describe VBZ 36297 1523 6 the the DT 36297 1523 7 varieties variety NNS 36297 1523 8 of of IN 36297 1523 9 irradiation irradiation NN 36297 1523 10 as as IN 36297 1523 11 follows follow VBZ 36297 1523 12 : : : 36297 1523 13 1 1 CD 36297 1523 14 . . . 36297 1524 1 Very very RB 36297 1524 2 rapid rapid JJ 36297 1524 3 spreading spreading NN 36297 1524 4 of of IN 36297 1524 5 the the DT 36297 1524 6 excitation excitation NN 36297 1524 7 over over IN 36297 1524 8 the the DT 36297 1524 9 retina retina NNP 36297 1524 10 extending extend VBG 36297 1524 11 far far RB 36297 1524 12 beyond beyond IN 36297 1524 13 the the DT 36297 1524 14 border border NN 36297 1524 15 of of IN 36297 1524 16 the the DT 36297 1524 17 stimulated stimulate VBN 36297 1524 18 region region NN 36297 1524 19 and and CC 36297 1524 20 occurring occur VBG 36297 1524 21 immediately immediately RB 36297 1524 22 upon upon IN 36297 1524 23 impact impact NN 36297 1524 24 of of IN 36297 1524 25 the the DT 36297 1524 26 stimulating stimulating JJ 36297 1524 27 light light NN 36297 1524 28 . . . 36297 1525 1 2 2 LS 36297 1525 2 . . . 36297 1526 1 Irradiation irradiation NN 36297 1526 2 within within IN 36297 1526 3 the the DT 36297 1526 4 stimulated stimulate VBN 36297 1526 5 portion portion NN 36297 1526 6 of of IN 36297 1526 7 the the DT 36297 1526 8 retina retina NNP 36297 1526 9 after after IN 36297 1526 10 the the DT 36297 1526 11 form form NN 36297 1526 12 of of IN 36297 1526 13 a a DT 36297 1526 14 figure figure NN 36297 1526 15 becomes become VBZ 36297 1526 16 distinctly distinctly RB 36297 1526 17 perceptible perceptible JJ 36297 1526 18 . . . 36297 1527 1 3 3 LS 36297 1527 2 . . . 36297 1528 1 Emanations emanation NNS 36297 1528 2 of of IN 36297 1528 3 decreasing decrease VBG 36297 1528 4 intensity intensity NN 36297 1528 5 extend extend VBP 36297 1528 6 themselves -PRON- PRP 36297 1528 7 outward outward RB 36297 1528 8 and and CC 36297 1528 9 backward backward RB 36297 1528 10 from from IN 36297 1528 11 a a DT 36297 1528 12 moving move VBG 36297 1528 13 image image NN 36297 1528 14 until until IN 36297 1528 15 lost lose VBN 36297 1528 16 in in IN 36297 1528 17 the the DT 36297 1528 18 darkness darkness NN 36297 1528 19 of of IN 36297 1528 20 the the DT 36297 1528 21 background background NN 36297 1528 22 . . . 36297 1529 1 4 4 LS 36297 1529 2 . . . 36297 1530 1 A a DT 36297 1530 2 well well RB 36297 1530 3 known know VBN 36297 1530 4 form form NN 36297 1530 5 of of IN 36297 1530 6 irradiation irradiation NN 36297 1530 7 which which WDT 36297 1530 8 occurs occur VBZ 36297 1530 9 when when WRB 36297 1530 10 a a DT 36297 1530 11 surface surface NN 36297 1530 12 of of IN 36297 1530 13 greater great JJR 36297 1530 14 intensity intensity NN 36297 1530 15 enlarges enlarge VBZ 36297 1530 16 itself -PRON- PRP 36297 1530 17 at at IN 36297 1530 18 the the DT 36297 1530 19 expense expense NN 36297 1530 20 of of IN 36297 1530 21 one one CD 36297 1530 22 of of IN 36297 1530 23 less less JJR 36297 1530 24 intensity intensity NN 36297 1530 25 . . . 36297 1531 1 5 5 CD 36297 1531 2 . . . 36297 1532 1 A a DT 36297 1532 2 form form NN 36297 1532 3 having have VBG 36297 1532 4 many many JJ 36297 1532 5 of of IN 36297 1532 6 the the DT 36297 1532 7 characteristics characteristic NNS 36297 1532 8 of of IN 36297 1532 9 the the DT 36297 1532 10 first first JJ 36297 1532 11 type type NN 36297 1532 12 , , , 36297 1532 13 but but CC 36297 1532 14 occurring occur VBG 36297 1532 15 only only RB 36297 1532 16 after after IN 36297 1532 17 long long JJ 36297 1532 18 periods period NNS 36297 1532 19 of of IN 36297 1532 20 stimulation stimulation NN 36297 1532 21 , , , 36297 1532 22 of of IN 36297 1532 23 the the DT 36297 1532 24 magnitude magnitude NN 36297 1532 25 of of IN 36297 1532 26 30 30 CD 36297 1532 27 to to TO 36297 1532 28 60 60 CD 36297 1532 29 seconds second NNS 36297 1532 30 or or CC 36297 1532 31 more more JJR 36297 1532 32 . . . 36297 1533 1 IX ix NN 36297 1533 2 COLOR color NN 36297 1533 3 In in IN 36297 1533 4 order order NN 36297 1533 5 to to TO 36297 1533 6 simplify simplify VB 36297 1533 7 the the DT 36297 1533 8 presentation presentation NN 36297 1533 9 of of IN 36297 1533 10 the the DT 36297 1533 11 general general JJ 36297 1533 12 subject subject NN 36297 1533 13 , , , 36297 1533 14 discussions discussion NNS 36297 1533 15 of of IN 36297 1533 16 color color NN 36297 1533 17 have have VBP 36297 1533 18 been be VBN 36297 1533 19 omitted omit VBN 36297 1533 20 in in IN 36297 1533 21 so so RB 36297 1533 22 far far RB 36297 1533 23 as as IN 36297 1533 24 possible possible JJ 36297 1533 25 from from IN 36297 1533 26 the the DT 36297 1533 27 preceding precede VBG 36297 1533 28 chapters chapter NNS 36297 1533 29 . . . 36297 1534 1 There there EX 36297 1534 2 are be VBP 36297 1534 3 almost almost RB 36297 1534 4 numberless numberless JJ 36297 1534 5 phenomena phenomenon NNS 36297 1534 6 involving involve VBG 36297 1534 7 color color NN 36297 1534 8 , , , 36297 1534 9 many many JJ 36297 1534 10 of of IN 36297 1534 11 which which WDT 36297 1534 12 are be VBP 36297 1534 13 illusions illusion NNS 36297 1534 14 , , , 36297 1534 15 or or CC 36297 1534 16 seemingly seemingly RB 36297 1534 17 so so RB 36297 1534 18 . . . 36297 1535 1 It -PRON- PRP 36297 1535 2 will will MD 36297 1535 3 be be VB 36297 1535 4 obvious obvious JJ 36297 1535 5 that that IN 36297 1535 6 many many JJ 36297 1535 7 are be VBP 36297 1535 8 errors error NNS 36297 1535 9 of of IN 36297 1535 10 sense sense NN 36297 1535 11 ; ; : 36297 1535 12 some some DT 36297 1535 13 are be VBP 36297 1535 14 errors error NNS 36297 1535 15 of of IN 36297 1535 16 judgment judgment NN 36297 1535 17 ; ; : 36297 1535 18 others other NNS 36297 1535 19 are be VBP 36297 1535 20 errors error NNS 36297 1535 21 due due JJ 36297 1535 22 to to IN 36297 1535 23 defects defect NNS 36297 1535 24 of of IN 36297 1535 25 the the DT 36297 1535 26 optical optical JJ 36297 1535 27 system system NN 36297 1535 28 of of IN 36297 1535 29 the the DT 36297 1535 30 eye eye NN 36297 1535 31 ; ; : 36297 1535 32 and and CC 36297 1535 33 many many JJ 36297 1535 34 may may MD 36297 1535 35 be be VB 36297 1535 36 ascribed ascribe VBN 36297 1535 37 to to IN 36297 1535 38 certain certain JJ 36297 1535 39 characteristics characteristic NNS 36297 1535 40 of of IN 36297 1535 41 the the DT 36297 1535 42 visual visual JJ 36297 1535 43 process process NN 36297 1535 44 . . . 36297 1536 1 It -PRON- PRP 36297 1536 2 is be VBZ 36297 1536 3 not not RB 36297 1536 4 the the DT 36297 1536 5 intention intention NN 36297 1536 6 to to TO 36297 1536 7 cover cover VB 36297 1536 8 the the DT 36297 1536 9 entire entire JJ 36297 1536 10 field field NN 36297 1536 11 in in IN 36297 1536 12 detail detail NN 36297 1536 13 ; ; : 36297 1536 14 indeed indeed RB 36297 1536 15 , , , 36297 1536 16 this this DT 36297 1536 17 could could MD 36297 1536 18 not not RB 36297 1536 19 be be VB 36297 1536 20 done do VBN 36297 1536 21 within within IN 36297 1536 22 the the DT 36297 1536 23 confines confine NNS 36297 1536 24 of of IN 36297 1536 25 a a DT 36297 1536 26 large large JJ 36297 1536 27 volume volume NN 36297 1536 28 . . . 36297 1537 1 However however RB 36297 1537 2 , , , 36297 1537 3 substantial substantial JJ 36297 1537 4 glimpses glimpse NNS 36297 1537 5 of of IN 36297 1537 6 the the DT 36297 1537 7 more more RBR 36297 1537 8 important important JJ 36297 1537 9 phases phase NNS 36297 1537 10 of of IN 36297 1537 11 color color NN 36297 1537 12 as as IN 36297 1537 13 related relate VBN 36297 1537 14 to to IN 36297 1537 15 illusions illusion NNS 36297 1537 16 are be VBP 36297 1537 17 presented present VBN 36297 1537 18 in in IN 36297 1537 19 this this DT 36297 1537 20 chapter chapter NN 36297 1537 21 . . . 36297 1538 1 In in IN 36297 1538 2 the the DT 36297 1538 3 early early JJ 36297 1538 4 chapters chapter NNS 36297 1538 5 pertaining pertain VBG 36297 1538 6 to to IN 36297 1538 7 the the DT 36297 1538 8 eye eye NN 36297 1538 9 and and CC 36297 1538 10 to to TO 36297 1538 11 vision vision VB 36297 1538 12 some some DT 36297 1538 13 of of IN 36297 1538 14 the the DT 36297 1538 15 following follow VBG 36297 1538 16 points point NNS 36297 1538 17 were be VBD 36297 1538 18 necessarily necessarily RB 36297 1538 19 touched touch VBN 36297 1538 20 upon upon IN 36297 1538 21 , , , 36297 1538 22 but but CC 36297 1538 23 the the DT 36297 1538 24 repetition repetition NN 36297 1538 25 in in IN 36297 1538 26 the the DT 36297 1538 27 paragraphs paragraph NNS 36297 1538 28 which which WDT 36297 1538 29 follow follow VBP 36297 1538 30 is be VBZ 36297 1538 31 avoided avoid VBN 36297 1538 32 as as RB 36297 1538 33 much much RB 36297 1538 34 as as IN 36297 1538 35 possible possible JJ 36297 1538 36 . . . 36297 1539 1 _ _ NNP 36297 1539 2 Simultaneous Simultaneous NNP 36297 1539 3 Contrast._--That contrast._--that IN 36297 1539 4 the the DT 36297 1539 5 life life NN 36297 1539 6 of of IN 36297 1539 7 color color NN 36297 1539 8 is be VBZ 36297 1539 9 due due JJ 36297 1539 10 to to IN 36297 1539 11 contrast contrast NN 36297 1539 12 is be VBZ 36297 1539 13 demonstrable demonstrable JJ 36297 1539 14 in in IN 36297 1539 15 many many JJ 36297 1539 16 ways way NNS 36297 1539 17 . . . 36297 1540 1 If if IN 36297 1540 2 a a DT 36297 1540 3 room room NN 36297 1540 4 is be VBZ 36297 1540 5 illuminated illuminate VBN 36297 1540 6 by by IN 36297 1540 7 deep deep JJ 36297 1540 8 red red JJ 36297 1540 9 light light NN 36297 1540 10 , , , 36297 1540 11 at at IN 36297 1540 12 first first RB 36297 1540 13 this this DT 36297 1540 14 color color NN 36297 1540 15 is be VBZ 36297 1540 16 very very RB 36297 1540 17 vivid vivid JJ 36297 1540 18 in in IN 36297 1540 19 consciousness consciousness NN 36297 1540 20 ; ; : 36297 1540 21 however however RB 36297 1540 22 , , , 36297 1540 23 gradually gradually RB 36297 1540 24 it -PRON- PRP 36297 1540 25 becomes become VBZ 36297 1540 26 less less RBR 36297 1540 27 saturated saturated JJ 36297 1540 28 . . . 36297 1541 1 After after IN 36297 1541 2 a a DT 36297 1541 3 half half JJ 36297 1541 4 hour hour NN 36297 1541 5 the the DT 36297 1541 6 color color NN 36297 1541 7 is be VBZ 36297 1541 8 apparently apparently RB 36297 1541 9 a a DT 36297 1541 10 much much RB 36297 1541 11 faded fade VBN 36297 1541 12 red red NN 36297 1541 13 but but CC 36297 1541 14 upon upon IN 36297 1541 15 emerging emerge VBG 36297 1541 16 from from IN 36297 1541 17 the the DT 36297 1541 18 room room NN 36297 1541 19 into into IN 36297 1541 20 one one CD 36297 1541 21 normally normally RB 36297 1541 22 lighted light VBN 36297 1541 23 , , , 36297 1541 24 the the DT 36297 1541 25 latter latter JJ 36297 1541 26 appears appear VBZ 36297 1541 27 very very RB 36297 1541 28 markedly markedly RB 36297 1541 29 greenish greenish JJ 36297 1541 30 in in IN 36297 1541 31 tint tint NN 36297 1541 32 . . . 36297 1542 1 The the DT 36297 1542 2 reason reason NN 36297 1542 3 that that WDT 36297 1542 4 the the DT 36297 1542 5 pure pure JJ 36297 1542 6 red red JJ 36297 1542 7 light light NN 36297 1542 8 does do VBZ 36297 1542 9 not not RB 36297 1542 10 appear appear VB 36297 1542 11 as as RB 36297 1542 12 strongly strongly RB 36297 1542 13 colored color VBN 36297 1542 14 as as IN 36297 1542 15 it -PRON- PRP 36297 1542 16 really really RB 36297 1542 17 is be VBZ 36297 1542 18 , , , 36297 1542 19 is be VBZ 36297 1542 20 due due JJ 36297 1542 21 to to IN 36297 1542 22 the the DT 36297 1542 23 lack lack NN 36297 1542 24 of of IN 36297 1542 25 contrast contrast NN 36297 1542 26 . . . 36297 1543 1 In in IN 36297 1543 2 a a DT 36297 1543 3 similar similar JJ 36297 1543 4 manner manner NN 36297 1543 5 at at IN 36297 1543 6 night night NN 36297 1543 7 we -PRON- PRP 36297 1543 8 see see VBP 36297 1543 9 white white JJ 36297 1543 10 objects object NNS 36297 1543 11 as as IN 36297 1543 12 white white JJ 36297 1543 13 even even RB 36297 1543 14 under under IN 36297 1543 15 the the DT 36297 1543 16 yellowish yellowish JJ 36297 1543 17 artificial artificial JJ 36297 1543 18 light light NN 36297 1543 19 . . . 36297 1544 1 The the DT 36297 1544 2 latter latter JJ 36297 1544 3 appears appear VBZ 36297 1544 4 very very RB 36297 1544 5 yellow yellow JJ 36297 1544 6 in in IN 36297 1544 7 color color NN 36297 1544 8 when when WRB 36297 1544 9 it -PRON- PRP 36297 1544 10 is be VBZ 36297 1544 11 first first RB 36297 1544 12 turned turn VBN 36297 1544 13 on on RP 36297 1544 14 as as IN 36297 1544 15 daylight daylight NN 36297 1544 16 wanes wane NNS 36297 1544 17 but but CC 36297 1544 18 as as IN 36297 1544 19 darkness darkness NN 36297 1544 20 falls fall VBZ 36297 1544 21 and and CC 36297 1544 22 time time NN 36297 1544 23 elapses elapse NNS 36297 1544 24 it -PRON- PRP 36297 1544 25 gradually gradually RB 36297 1544 26 assumes assume VBZ 36297 1544 27 a a DT 36297 1544 28 colorless colorless JJ 36297 1544 29 appearance appearance NN 36297 1544 30 . . . 36297 1545 1 An an DT 36297 1545 2 apparatus apparatus NN 36297 1545 3 constructed construct VBN 36297 1545 4 after after IN 36297 1545 5 the the DT 36297 1545 6 plan plan NN 36297 1545 7 of of IN 36297 1545 8 Fig Fig NNP 36297 1545 9 . . . 36297 1546 1 62 62 CD 36297 1546 2 is be VBZ 36297 1546 3 very very RB 36297 1546 4 effective effective JJ 36297 1546 5 for for IN 36297 1546 6 demonstrating demonstrate VBG 36297 1546 7 the the DT 36297 1546 8 remarkable remarkable JJ 36297 1546 9 effects effect NNS 36297 1546 10 of of IN 36297 1546 11 color color NN 36297 1546 12 - - HYPH 36297 1546 13 contrast contrast NN 36297 1546 14 but but CC 36297 1546 15 some some DT 36297 1546 16 additions addition NNS 36297 1546 17 will will MD 36297 1546 18 add add VB 36297 1546 19 considerably considerably RB 36297 1546 20 to to IN 36297 1546 21 its -PRON- PRP$ 36297 1546 22 convenience convenience NN 36297 1546 23 . . . 36297 1547 1 If if IN 36297 1547 2 the the DT 36297 1547 3 lamps lamp NNS 36297 1547 4 _ _ NNP 36297 1547 5 F F NNP 36297 1547 6 _ _ NNP 36297 1547 7 are be VBP 36297 1547 8 divided divide VBN 36297 1547 9 into into IN 36297 1547 10 three three CD 36297 1547 11 circuits circuit NNS 36297 1547 12 , , , 36297 1547 13 each each DT 36297 1547 14 emitting emit VBG 36297 1547 15 , , , 36297 1547 16 respectively respectively RB 36297 1547 17 , , , 36297 1547 18 red red JJ 36297 1547 19 , , , 36297 1547 20 green green JJ 36297 1547 21 , , , 36297 1547 22 and and CC 36297 1547 23 blue blue JJ 36297 1547 24 primary primary JJ 36297 1547 25 colors color NNS 36297 1547 26 , , , 36297 1547 27 it -PRON- PRP 36297 1547 28 is be VBZ 36297 1547 29 possible possible JJ 36297 1547 30 by by IN 36297 1547 31 means mean NNS 36297 1547 32 of of IN 36297 1547 33 controlling control VBG 36297 1547 34 rheostats rheostat NNS 36297 1547 35 to to TO 36297 1547 36 illuminate illuminate VB 36297 1547 37 _ _ NNP 36297 1547 38 E E NNP 36297 1547 39 _ _ NNP 36297 1547 40 , , , 36297 1547 41 the the DT 36297 1547 42 environment environment NN 36297 1547 43 , , , 36297 1547 44 with with IN 36297 1547 45 light light NN 36297 1547 46 of of IN 36297 1547 47 any any DT 36297 1547 48 hue hue NN 36297 1547 49 ( ( -LRB- 36297 1547 50 including include VBG 36297 1547 51 purple purple NNP 36297 1547 52 ) ) -RRB- 36297 1547 53 , , , 36297 1547 54 of of IN 36297 1547 55 any any DT 36297 1547 56 saturation saturation NN 36297 1547 57 , , , 36297 1547 58 and and CC 36297 1547 59 of of IN 36297 1547 60 a a DT 36297 1547 61 wide wide JJ 36297 1547 62 range range NN 36297 1547 63 of of IN 36297 1547 64 intensities intensity NNS 36297 1547 65 or or CC 36297 1547 66 resulting result VBG 36297 1547 67 brightnesses brightness NNS 36297 1547 68 . . . 36297 1548 1 Thus thus RB 36297 1548 2 we -PRON- PRP 36297 1548 3 have have VBP 36297 1548 4 a a DT 36297 1548 5 very very RB 36297 1548 6 simple simple JJ 36297 1548 7 apparatus apparatus NN 36297 1548 8 for for IN 36297 1548 9 quickly quickly RB 36297 1548 10 providing provide VBG 36297 1548 11 almost almost RB 36297 1548 12 numberless numberless JJ 36297 1548 13 environments environment NNS 36297 1548 14 for for IN 36297 1548 15 _ _ NNP 36297 1548 16 H H NNP 36297 1548 17 _ _ NNP 36297 1548 18 . . . 36297 1549 1 The the DT 36297 1549 2 same same JJ 36297 1549 3 scheme scheme NN 36297 1549 4 can can MD 36297 1549 5 be be VB 36297 1549 6 applied apply VBN 36297 1549 7 to to IN 36297 1549 8 lamps lamp NNS 36297 1549 9 _ _ NNP 36297 1549 10 R R NNP 36297 1549 11 _ _ NNP 36297 1549 12 , , , 36297 1549 13 with with IN 36297 1549 14 the the DT 36297 1549 15 result result NN 36297 1549 16 that that IN 36297 1549 17 a a DT 36297 1549 18 vast vast JJ 36297 1549 19 array array NN 36297 1549 20 of of IN 36297 1549 21 colors color NNS 36297 1549 22 may may MD 36297 1549 23 be be VB 36297 1549 24 seen see VBN 36297 1549 25 through through IN 36297 1549 26 the the DT 36297 1549 27 hole hole NN 36297 1549 28 _ _ NNP 36297 1549 29 H H NNP 36297 1549 30 _ _ NNP 36297 1549 31 . . . 36297 1550 1 If if IN 36297 1550 2 the the DT 36297 1550 3 hole hole NN 36297 1550 4 is be VBZ 36297 1550 5 the the DT 36297 1550 6 shape shape NN 36297 1550 7 of of IN 36297 1550 8 the the DT 36297 1550 9 star star NN 36297 1550 10 in in IN 36297 1550 11 Fig Fig NNP 36297 1550 12 . . . 36297 1551 1 66 66 CD 36297 1551 2 it -PRON- PRP 36297 1551 3 will will MD 36297 1551 4 be be VB 36297 1551 5 found find VBN 36297 1551 6 very very RB 36297 1551 7 effective effective JJ 36297 1551 8 . . . 36297 1552 1 The the DT 36297 1552 2 observer observer NN 36297 1552 3 will will MD 36297 1552 4 actually actually RB 36297 1552 5 see see VB 36297 1552 6 a a DT 36297 1552 7 star star NN 36297 1552 8 of of IN 36297 1552 9 any any DT 36297 1552 10 desired desire VBN 36297 1552 11 color color NN 36297 1552 12 amid amid IN 36297 1552 13 an an DT 36297 1552 14 environment environment NN 36297 1552 15 of of IN 36297 1552 16 any any DT 36297 1552 17 desired desire VBN 36297 1552 18 color color NN 36297 1552 19 . . . 36297 1553 1 Care care NN 36297 1553 2 should should MD 36297 1553 3 be be VB 36297 1553 4 taken take VBN 36297 1553 5 to to TO 36297 1553 6 have have VB 36297 1553 7 the the DT 36297 1553 8 star star NN 36297 1553 9 cut cut VBN 36297 1553 10 in in IN 36297 1553 11 very very RB 36297 1553 12 thin thin JJ 36297 1553 13 material material NN 36297 1553 14 in in IN 36297 1553 15 order order NN 36297 1553 16 to to TO 36297 1553 17 eliminate eliminate VB 36297 1553 18 conspicuous conspicuous JJ 36297 1553 19 boundary boundary JJ 36297 1553 20 lines line NNS 36297 1553 21 . . . 36297 1554 1 It -PRON- PRP 36297 1554 2 is be VBZ 36297 1554 3 quite quite RB 36297 1554 4 satisfactory satisfactory JJ 36297 1554 5 to to TO 36297 1554 6 use use VB 36297 1554 7 a a DT 36297 1554 8 series series NN 36297 1554 9 of of IN 36297 1554 10 colored colored JJ 36297 1554 11 papers paper NNS 36297 1554 12 on on IN 36297 1554 13 a a DT 36297 1554 14 slide slide NN 36297 1554 15 at at IN 36297 1554 16 _ _ NNP 36297 1554 17 C C NNP 36297 1554 18 _ _ NNP 36297 1554 19 and and CC 36297 1554 20 ordinary ordinary JJ 36297 1554 21 clear clear JJ 36297 1554 22 lamps lamp NNS 36297 1554 23 at at IN 36297 1554 24 _ _ NNP 36297 1554 25 R R NNP 36297 1554 26 _ _ NNP 36297 1554 27 . . . 36297 1555 1 By by IN 36297 1555 2 means mean NNS 36297 1555 3 of of IN 36297 1555 4 this this DT 36297 1555 5 apparatus apparatus NN 36297 1555 6 both both DT 36297 1555 7 contrasts contrast NNS 36297 1555 8 -- -- : 36297 1555 9 hue hue NN 36297 1555 10 and and CC 36297 1555 11 brightness brightness NN 36297 1555 12 -- -- : 36297 1555 13 may may MD 36297 1555 14 be be VB 36297 1555 15 demonstrated demonstrate VBN 36297 1555 16 . . . 36297 1556 1 Of of RB 36297 1556 2 course course RB 36297 1556 3 , , , 36297 1556 4 for for IN 36297 1556 5 black black JJ 36297 1556 6 and and CC 36297 1556 7 white white JJ 36297 1556 8 only only JJ 36297 1556 9 brightness brightness NN 36297 1556 10 - - HYPH 36297 1556 11 contrast contrast NN 36297 1556 12 is be VBZ 36297 1556 13 present present JJ 36297 1556 14 ; ; : 36297 1556 15 but but CC 36297 1556 16 in in IN 36297 1556 17 general general JJ 36297 1556 18 where where WRB 36297 1556 19 there there EX 36297 1556 20 is be VBZ 36297 1556 21 color color NN 36297 1556 22 - - HYPH 36297 1556 23 contrast contrast NN 36297 1556 24 there there EX 36297 1556 25 is be VBZ 36297 1556 26 also also RB 36297 1556 27 brightness brightness NN 36297 1556 28 - - HYPH 36297 1556 29 contrast contrast NN 36297 1556 30 . . . 36297 1557 1 The the DT 36297 1557 2 latter latter JJ 36297 1557 3 may may MD 36297 1557 4 be be VB 36297 1557 5 reduced reduce VBN 36297 1557 6 or or CC 36297 1557 7 even even RB 36297 1557 8 eliminated eliminate VBN 36297 1557 9 if if IN 36297 1557 10 the the DT 36297 1557 11 brightness brightness NN 36297 1557 12 of of IN 36297 1557 13 the the DT 36297 1557 14 star star NN 36297 1557 15 and and CC 36297 1557 16 of of IN 36297 1557 17 its -PRON- PRP$ 36297 1557 18 surroundings surrounding NNS 36297 1557 19 are be VBP 36297 1557 20 made make VBN 36297 1557 21 equal equal JJ 36297 1557 22 , , , 36297 1557 23 but but CC 36297 1557 24 it -PRON- PRP 36297 1557 25 is be VBZ 36297 1557 26 difficult difficult JJ 36297 1557 27 to to TO 36297 1557 28 make make VB 36297 1557 29 a a DT 36297 1557 30 satisfactory satisfactory JJ 36297 1557 31 balance balance NN 36297 1557 32 in in IN 36297 1557 33 this this DT 36297 1557 34 respect respect NN 36297 1557 35 . . . 36297 1558 1 Assuming assume VBG 36297 1558 2 , , , 36297 1558 3 however however RB 36297 1558 4 , , , 36297 1558 5 that that IN 36297 1558 6 brightness brightness NN 36297 1558 7 - - HYPH 36297 1558 8 contrast contrast NN 36297 1558 9 is be VBZ 36297 1558 10 eliminated eliminate VBN 36297 1558 11 , , , 36297 1558 12 we -PRON- PRP 36297 1558 13 have have VBP 36297 1558 14 left leave VBN 36297 1558 15 only only RB 36297 1558 16 hue hue NN 36297 1558 17 and and CC 36297 1558 18 saturation saturation NN 36297 1558 19 contrast contrast NN 36297 1558 20 , , , 36297 1558 21 or or CC 36297 1558 22 what what WP 36297 1558 23 will will MD 36297 1558 24 be be VB 36297 1558 25 termed term VBN 36297 1558 26 ( ( -LRB- 36297 1558 27 rather rather RB 36297 1558 28 loosely loosely RB 36297 1558 29 , , , 36297 1558 30 it -PRON- PRP 36297 1558 31 is be VBZ 36297 1558 32 admitted admit VBN 36297 1558 33 ) ) -RRB- 36297 1558 34 color color NN 36297 1558 35 - - HYPH 36297 1558 36 contrast contrast NN 36297 1558 37 . . . 36297 1559 1 [ [ -LRB- 36297 1559 2 Illustration illustration NN 36297 1559 3 : : : 36297 1559 4 Fig Fig NNP 36297 1559 5 . . . 36297 1560 1 66.--An 66.--an CD 36297 1560 2 excellent excellent JJ 36297 1560 3 pattern pattern NN 36297 1560 4 for for IN 36297 1560 5 demonstrating demonstrate VBG 36297 1560 6 color color NN 36297 1560 7 - - HYPH 36297 1560 8 contrast contrast NN 36297 1560 9 . . . 36297 1560 10 ] ] -RRB- 36297 1561 1 If if IN 36297 1561 2 the the DT 36297 1561 3 surroundings surrounding NNS 36297 1561 4 are be VBP 36297 1561 5 dark dark JJ 36297 1561 6 and and CC 36297 1561 7 , , , 36297 1561 8 for for IN 36297 1561 9 example example NN 36297 1561 10 , , , 36297 1561 11 an an DT 36297 1561 12 orange orange NNP 36297 1561 13 star star NN 36297 1561 14 is be VBZ 36297 1561 15 seen see VBN 36297 1561 16 alone alone RB 36297 1561 17 , , , 36297 1561 18 it -PRON- PRP 36297 1561 19 does do VBZ 36297 1561 20 not not RB 36297 1561 21 appear appear VB 36297 1561 22 very very RB 36297 1561 23 colorful colorful JJ 36297 1561 24 . . . 36297 1562 1 However however RB 36297 1562 2 , , , 36297 1562 3 if if IN 36297 1562 4 the the DT 36297 1562 5 surroundings surrounding NNS 36297 1562 6 are be VBP 36297 1562 7 now now RB 36297 1562 8 made make VBN 36297 1562 9 bright bright JJ 36297 1562 10 with with IN 36297 1562 11 white white JJ 36297 1562 12 light light NN 36297 1562 13 , , , 36297 1562 14 the the DT 36297 1562 15 star star NN 36297 1562 16 appears appear VBZ 36297 1562 17 quite quite RB 36297 1562 18 saturated saturate VBN 36297 1562 19 . . . 36297 1563 1 With with IN 36297 1563 2 blue blue JJ 36297 1563 3 or or CC 36297 1563 4 green green JJ 36297 1563 5 light light NN 36297 1563 6 the the DT 36297 1563 7 orange orange NNP 36297 1563 8 star star NN 36297 1563 9 appears appear VBZ 36297 1563 10 even even RB 36297 1563 11 more more RBR 36297 1563 12 intensely intensely RB 36297 1563 13 orange orange JJ 36297 1563 14 , , , 36297 1563 15 but but CC 36297 1563 16 when when WRB 36297 1563 17 the the DT 36297 1563 18 color color NN 36297 1563 19 - - HYPH 36297 1563 20 contrast contrast NN 36297 1563 21 is be VBZ 36297 1563 22 reduced reduce VBN 36297 1563 23 , , , 36297 1563 24 as as IN 36297 1563 25 in in IN 36297 1563 26 the the DT 36297 1563 27 case case NN 36297 1563 28 of of IN 36297 1563 29 yellow yellow JJ 36297 1563 30 or or CC 36297 1563 31 red red JJ 36297 1563 32 surroundings surrounding NNS 36297 1563 33 , , , 36297 1563 34 the the DT 36297 1563 35 vividness vividness NN 36297 1563 36 of of IN 36297 1563 37 the the DT 36297 1563 38 orange orange NNP 36297 1563 39 star star NNP 36297 1563 40 again again RB 36297 1563 41 decreases decrease VBZ 36297 1563 42 . . . 36297 1564 1 This this DT 36297 1564 2 may may MD 36297 1564 3 be be VB 36297 1564 4 summarized summarize VBN 36297 1564 5 by by IN 36297 1564 6 stating state VBG 36297 1564 7 that that IN 36297 1564 8 two two CD 36297 1564 9 widely widely RB 36297 1564 10 different different JJ 36297 1564 11 colors color NNS 36297 1564 12 viewed view VBN 36297 1564 13 in in IN 36297 1564 14 this this DT 36297 1564 15 manner manner NN 36297 1564 16 will will MD 36297 1564 17 mutually mutually RB 36297 1564 18 affect affect VB 36297 1564 19 each each DT 36297 1564 20 other other JJ 36297 1564 21 so so IN 36297 1564 22 that that IN 36297 1564 23 they -PRON- PRP 36297 1564 24 appear appear VBP 36297 1564 25 still still RB 36297 1564 26 more more RBR 36297 1564 27 different different JJ 36297 1564 28 in in IN 36297 1564 29 hue hue NNP 36297 1564 30 . . . 36297 1565 1 If if IN 36297 1565 2 their -PRON- PRP$ 36297 1565 3 hues hue NNS 36297 1565 4 are be VBP 36297 1565 5 close close JJ 36297 1565 6 together together RB 36297 1565 7 spectrally spectrally RB 36297 1565 8 this this DT 36297 1565 9 effect effect NN 36297 1565 10 is be VBZ 36297 1565 11 not not RB 36297 1565 12 as as RB 36297 1565 13 apparent apparent JJ 36297 1565 14 . . . 36297 1566 1 For for IN 36297 1566 2 example example NN 36297 1566 3 , , , 36297 1566 4 if if IN 36297 1566 5 orange orange NN 36297 1566 6 and and CC 36297 1566 7 green green JJ 36297 1566 8 are be VBP 36297 1566 9 contrasted contrast VBN 36297 1566 10 , , , 36297 1566 11 the the DT 36297 1566 12 orange orange NN 36297 1566 13 will will MD 36297 1566 14 appear appear VB 36297 1566 15 reddish reddish JJ 36297 1566 16 in in IN 36297 1566 17 hue hue NNP 36297 1566 18 and and CC 36297 1566 19 the the DT 36297 1566 20 green green NN 36297 1566 21 will will MD 36297 1566 22 appear appear VB 36297 1566 23 bluish bluish NNP 36297 1566 24 . . . 36297 1567 1 Let let VB 36297 1567 2 us -PRON- PRP 36297 1567 3 now now RB 36297 1567 4 assume assume VB 36297 1567 5 the the DT 36297 1567 6 star star NN 36297 1567 7 to to TO 36297 1567 8 be be VB 36297 1567 9 white white JJ 36297 1567 10 , , , 36297 1567 11 and and CC 36297 1567 12 that that IN 36297 1567 13 the the DT 36297 1567 14 surroundings surrounding NNS 36297 1567 15 are be VBP 36297 1567 16 of of IN 36297 1567 17 any any DT 36297 1567 18 color color NN 36297 1567 19 of of IN 36297 1567 20 approximately approximately RB 36297 1567 21 the the DT 36297 1567 22 same same JJ 36297 1567 23 brightness brightness NN 36297 1567 24 . . . 36297 1568 1 The the DT 36297 1568 2 star star NN 36297 1568 3 which which WDT 36297 1568 4 is be VBZ 36297 1568 5 really really RB 36297 1568 6 white white JJ 36297 1568 7 will will MD 36297 1568 8 now now RB 36297 1568 9 appear appear VB 36297 1568 10 decidedly decidedly RB 36297 1568 11 tinted tint VBN 36297 1568 12 and and CC 36297 1568 13 of of IN 36297 1568 14 a a DT 36297 1568 15 hue hue NN 36297 1568 16 approximately approximately RB 36297 1568 17 complementary complementary JJ 36297 1568 18 to to IN 36297 1568 19 that that DT 36297 1568 20 of of IN 36297 1568 21 the the DT 36297 1568 22 surroundings surrounding NNS 36297 1568 23 . . . 36297 1569 1 When when WRB 36297 1569 2 the the DT 36297 1569 3 latter latter JJ 36297 1569 4 are be VBP 36297 1569 5 of of IN 36297 1569 6 a a DT 36297 1569 7 green green JJ 36297 1569 8 color color NN 36297 1569 9 the the DT 36297 1569 10 white white NNP 36297 1569 11 star star NNP 36297 1569 12 will will MD 36297 1569 13 assume assume VB 36297 1569 14 a a DT 36297 1569 15 purplish purplish JJ 36297 1569 16 tinge tinge NN 36297 1569 17 ; ; : 36297 1569 18 when when WRB 36297 1569 19 red red JJ 36297 1569 20 the the DT 36297 1569 21 white white NNP 36297 1569 22 star star NNP 36297 1569 23 will will MD 36297 1569 24 appear appear VB 36297 1569 25 of of IN 36297 1569 26 a a DT 36297 1569 27 blue blue JJ 36297 1569 28 - - HYPH 36297 1569 29 green green JJ 36297 1569 30 tint tint NN 36297 1569 31 ; ; : 36297 1569 32 when when WRB 36297 1569 33 yellow yellow JJ 36297 1569 34 the the DT 36297 1569 35 white white NNP 36297 1569 36 star star NNP 36297 1569 37 will will MD 36297 1569 38 appear appear VB 36297 1569 39 bluish bluish NNP 36297 1569 40 . . . 36297 1570 1 This this DT 36297 1570 2 is be VBZ 36297 1570 3 an an DT 36297 1570 4 illusion illusion NN 36297 1570 5 in in IN 36297 1570 6 any any DT 36297 1570 7 sense sense NN 36297 1570 8 of of IN 36297 1570 9 the the DT 36297 1570 10 term term NN 36297 1570 11 . . . 36297 1571 1 The the DT 36297 1571 2 strength strength NN 36297 1571 3 of of IN 36297 1571 4 this this DT 36297 1571 5 illusion illusion NN 36297 1571 6 caused cause VBN 36297 1571 7 by by IN 36297 1571 8 simultaneous simultaneous JJ 36297 1571 9 contrast contrast NN 36297 1571 10 is be VBZ 36297 1571 11 very very RB 36297 1571 12 remarkable remarkable JJ 36297 1571 13 . . . 36297 1572 1 For for IN 36297 1572 2 example example NN 36297 1572 3 , , , 36297 1572 4 if if IN 36297 1572 5 a a DT 36297 1572 6 grayish grayish NNP 36297 1572 7 purple purple NNP 36297 1572 8 star star NN 36297 1572 9 is be VBZ 36297 1572 10 viewed view VBN 36297 1572 11 amid amid IN 36297 1572 12 intense intense JJ 36297 1572 13 green green JJ 36297 1572 14 surroundings surrounding NNS 36297 1572 15 it -PRON- PRP 36297 1572 16 will will MD 36297 1572 17 appear appear VB 36297 1572 18 richly richly RB 36297 1572 19 purple purple JJ 36297 1572 20 , , , 36297 1572 21 but but CC 36297 1572 22 when when WRB 36297 1572 23 the the DT 36297 1572 24 surroundings surrounding NNS 36297 1572 25 are be VBP 36297 1572 26 changed change VBN 36297 1572 27 to to IN 36297 1572 28 a a DT 36297 1572 29 rich rich JJ 36297 1572 30 purple purple NN 36297 1572 31 the the DT 36297 1572 32 grayish grayish NNP 36297 1572 33 purple purple NNP 36297 1572 34 star star NNP 36297 1572 35 will will MD 36297 1572 36 even even RB 36297 1572 37 appear appear VB 36297 1572 38 greenish greenish JJ 36297 1572 39 . . . 36297 1573 1 The the DT 36297 1573 2 apparent apparent JJ 36297 1573 3 change change NN 36297 1573 4 of of IN 36297 1573 5 a a DT 36297 1573 6 color color NN 36297 1573 7 to to IN 36297 1573 8 its -PRON- PRP$ 36297 1573 9 complementary complementary JJ 36297 1573 10 by by IN 36297 1573 11 merely merely RB 36297 1573 12 altering alter VBG 36297 1573 13 its -PRON- PRP$ 36297 1573 14 environment environment NN 36297 1573 15 is be VBZ 36297 1573 16 really really RB 36297 1573 17 a a DT 36297 1573 18 remarkable remarkable JJ 36297 1573 19 illusion illusion NN 36297 1573 20 . . . 36297 1574 1 The the DT 36297 1574 2 importance importance NN 36297 1574 3 of of IN 36297 1574 4 simultaneous simultaneous JJ 36297 1574 5 contrast contrast NN 36297 1574 6 is be VBZ 36297 1574 7 easily easily RB 36297 1574 8 demonstrated demonstrate VBN 36297 1574 9 upon upon IN 36297 1574 10 a a DT 36297 1574 11 painting painting NN 36297 1574 12 by by IN 36297 1574 13 isolating isolate VBG 36297 1574 14 any any DT 36297 1574 15 colored colored JJ 36297 1574 16 object object NN 36297 1574 17 from from IN 36297 1574 18 its -PRON- PRP$ 36297 1574 19 surroundings surrounding NNS 36297 1574 20 by by IN 36297 1574 21 means mean NNS 36297 1574 22 of of IN 36297 1574 23 a a DT 36297 1574 24 hole hole NN 36297 1574 25 in in IN 36297 1574 26 a a DT 36297 1574 27 gray gray JJ 36297 1574 28 card card NN 36297 1574 29 . . . 36297 1575 1 For for IN 36297 1575 2 example example NN 36297 1575 3 , , , 36297 1575 4 an an DT 36297 1575 5 orange orange JJ 36297 1575 6 flower flower NN 36297 1575 7 - - HYPH 36297 1575 8 pot pot NN 36297 1575 9 amid amid IN 36297 1575 10 the the DT 36297 1575 11 green green JJ 36297 1575 12 foliage foliage NN 36297 1575 13 of of IN 36297 1575 14 its -PRON- PRP$ 36297 1575 15 surroundings surrounding NNS 36297 1575 16 will will MD 36297 1575 17 appear appear VB 36297 1575 18 decidedly decidedly RB 36297 1575 19 different different JJ 36297 1575 20 in in IN 36297 1575 21 color color NN 36297 1575 22 and and CC 36297 1575 23 brightness brightness NN 36297 1575 24 than than IN 36297 1575 25 when when WRB 36297 1575 26 viewed view VBN 36297 1575 27 through through IN 36297 1575 28 a a DT 36297 1575 29 hole hole NN 36297 1575 30 in in IN 36297 1575 31 a a DT 36297 1575 32 white white JJ 36297 1575 33 , , , 36297 1575 34 black black JJ 36297 1575 35 , , , 36297 1575 36 or or CC 36297 1575 37 gray gray JJ 36297 1575 38 cardboard cardboard NN 36297 1575 39 . . . 36297 1576 1 By by IN 36297 1576 2 means mean NNS 36297 1576 3 of of IN 36297 1576 4 colored colored JJ 36297 1576 5 papers paper NNS 36297 1576 6 the the DT 36297 1576 7 same same JJ 36297 1576 8 color color NN 36297 1576 9 may may MD 36297 1576 10 be be VB 36297 1576 11 placed place VBN 36297 1576 12 in in IN 36297 1576 13 many many JJ 36297 1576 14 different different JJ 36297 1576 15 environments environment NNS 36297 1576 16 and and CC 36297 1576 17 the the DT 36297 1576 18 various various JJ 36297 1576 19 contrasts contrast NNS 36297 1576 20 may may MD 36297 1576 21 be be VB 36297 1576 22 viewed view VBN 36297 1576 23 simultaneously simultaneously RB 36297 1576 24 . . . 36297 1577 1 The the DT 36297 1577 2 extent extent NN 36297 1577 3 of of IN 36297 1577 4 the the DT 36297 1577 5 illusion illusion NN 36297 1577 6 is be VBZ 36297 1577 7 very very RB 36297 1577 8 evident evident JJ 36297 1577 9 when when WRB 36297 1577 10 revealed reveal VBN 36297 1577 11 in in IN 36297 1577 12 this this DT 36297 1577 13 simple simple JJ 36297 1577 14 manner manner NN 36297 1577 15 . . . 36297 1578 1 However however RB 36297 1578 2 , , , 36297 1578 3 too too RB 36297 1578 4 much much JJ 36297 1578 5 emphasis emphasis NN 36297 1578 6 can can MD 36297 1578 7 not not RB 36297 1578 8 be be VB 36297 1578 9 given give VBN 36297 1578 10 to to IN 36297 1578 11 Figs fig NNS 36297 1578 12 . . . 36297 1579 1 62 62 CD 36297 1579 2 and and CC 36297 1579 3 66 66 CD 36297 1579 4 as as IN 36297 1579 5 a a DT 36297 1579 6 powerful powerful JJ 36297 1579 7 means mean NNS 36297 1579 8 for for IN 36297 1579 9 realizing realize VBG 36297 1579 10 the the DT 36297 1579 11 greatest great JJS 36297 1579 12 effects effect NNS 36297 1579 13 . . . 36297 1580 1 _ _ NNP 36297 1580 2 After After NNP 36297 1580 3 - - HYPH 36297 1580 4 images._--After images._--after NN 36297 1580 5 looking look VBG 36297 1580 6 at at IN 36297 1580 7 bright bright JJ 36297 1580 8 objects object NNS 36297 1580 9 we -PRON- PRP 36297 1580 10 see see VBP 36297 1580 11 after after IN 36297 1580 12 - - HYPH 36297 1580 13 images image NNS 36297 1580 14 of of IN 36297 1580 15 the the DT 36297 1580 16 same same JJ 36297 1580 17 size size NN 36297 1580 18 and and CC 36297 1580 19 form form NN 36297 1580 20 which which WDT 36297 1580 21 vary vary VBP 36297 1580 22 more more RBR 36297 1580 23 or or CC 36297 1580 24 less less RBR 36297 1580 25 in in IN 36297 1580 26 color color NN 36297 1580 27 . . . 36297 1581 1 These these DT 36297 1581 2 after after IN 36297 1581 3 - - HYPH 36297 1581 4 images image NNS 36297 1581 5 are be VBP 36297 1581 6 due due JJ 36297 1581 7 to to IN 36297 1581 8 persistence persistence NN 36297 1581 9 or or CC 36297 1581 10 fatigue fatigue NN 36297 1581 11 of of IN 36297 1581 12 the the DT 36297 1581 13 visual visual JJ 36297 1581 14 process process NN 36297 1581 15 , , , 36297 1581 16 depending depend VBG 36297 1581 17 upon upon IN 36297 1581 18 conditions condition NNS 36297 1581 19 . . . 36297 1582 1 After after IN 36297 1582 2 looking look VBG 36297 1582 3 at at IN 36297 1582 4 the the DT 36297 1582 5 sun sun NN 36297 1582 6 for for IN 36297 1582 7 a a DT 36297 1582 8 moment moment NN 36297 1582 9 a a DT 36297 1582 10 very very RB 36297 1582 11 bright bright JJ 36297 1582 12 after after IN 36297 1582 13 - - HYPH 36297 1582 14 image image NN 36297 1582 15 is be VBZ 36297 1582 16 seen see VBN 36297 1582 17 . . . 36297 1583 1 Undoubtedly undoubtedly RB 36297 1583 2 this this DT 36297 1583 3 at at IN 36297 1583 4 first first RB 36297 1583 5 is be VBZ 36297 1583 6 due due JJ 36297 1583 7 to to IN 36297 1583 8 a a DT 36297 1583 9 persistence persistence NN 36297 1583 10 of of IN 36297 1583 11 the the DT 36297 1583 12 visual visual JJ 36297 1583 13 process process NN 36297 1583 14 , , , 36297 1583 15 but but CC 36297 1583 16 as as IN 36297 1583 17 it -PRON- PRP 36297 1583 18 decays decay VBZ 36297 1583 19 it -PRON- PRP 36297 1583 20 continuously continuously RB 36297 1583 21 changes change VBZ 36297 1583 22 color color NN 36297 1583 23 and and CC 36297 1583 24 finally finally RB 36297 1583 25 its -PRON- PRP$ 36297 1583 26 presence presence NN 36297 1583 27 is be VBZ 36297 1583 28 due due JJ 36297 1583 29 to to IN 36297 1583 30 fatigue fatigue NN 36297 1583 31 . . . 36297 1584 1 After after IN 36297 1584 2 - - HYPH 36297 1584 3 images image NNS 36297 1584 4 may may MD 36297 1584 5 be be VB 36297 1584 6 seen see VBN 36297 1584 7 after after IN 36297 1584 8 looking look VBG 36297 1584 9 intently intently RB 36297 1584 10 at at IN 36297 1584 11 any any DT 36297 1584 12 object object NN 36297 1584 13 and and CC 36297 1584 14 then then RB 36297 1584 15 directing direct VBG 36297 1584 16 the the DT 36297 1584 17 eyes eye NNS 36297 1584 18 toward toward IN 36297 1584 19 a a DT 36297 1584 20 blank blank JJ 36297 1584 21 surface surface NN 36297 1584 22 such such JJ 36297 1584 23 as as IN 36297 1584 24 a a DT 36297 1584 25 wall wall NN 36297 1584 26 . . . 36297 1585 1 A a DT 36297 1585 2 picture picture NN 36297 1585 3 - - HYPH 36297 1585 4 frame frame NN 36297 1585 5 will will MD 36297 1585 6 be be VB 36297 1585 7 seen see VBN 36297 1585 8 as as IN 36297 1585 9 a a DT 36297 1585 10 rectangular rectangular JJ 36297 1585 11 after after IN 36297 1585 12 - - HYPH 36297 1585 13 image image NN 36297 1585 14 ; ; : 36297 1585 15 a a DT 36297 1585 16 checkered checkered JJ 36297 1585 17 pattern pattern NN 36297 1585 18 will will MD 36297 1585 19 be be VB 36297 1585 20 seen see VBN 36297 1585 21 as as IN 36297 1585 22 a a DT 36297 1585 23 checkered checkered JJ 36297 1585 24 after after IN 36297 1585 25 - - HYPH 36297 1585 26 image image NN 36297 1585 27 . . . 36297 1586 1 When when WRB 36297 1586 2 these these DT 36297 1586 3 after after IN 36297 1586 4 - - HYPH 36297 1586 5 images image NNS 36297 1586 6 are be VBP 36297 1586 7 projected project VBN 36297 1586 8 upon upon IN 36297 1586 9 other other JJ 36297 1586 10 objects object NNS 36297 1586 11 it -PRON- PRP 36297 1586 12 is be VBZ 36297 1586 13 obvious obvious JJ 36297 1586 14 that that IN 36297 1586 15 the the DT 36297 1586 16 appearance appearance NN 36297 1586 17 of of IN 36297 1586 18 the the DT 36297 1586 19 latter latter JJ 36297 1586 20 is be VBZ 36297 1586 21 apparently apparently RB 36297 1586 22 altered alter VBN 36297 1586 23 especially especially RB 36297 1586 24 when when WRB 36297 1586 25 the the DT 36297 1586 26 observer observer NN 36297 1586 27 is be VBZ 36297 1586 28 not not RB 36297 1586 29 conscious conscious JJ 36297 1586 30 of of IN 36297 1586 31 the the DT 36297 1586 32 after after IN 36297 1586 33 - - HYPH 36297 1586 34 image image NN 36297 1586 35 . . . 36297 1587 1 The the DT 36297 1587 2 effects effect NNS 36297 1587 3 are be VBP 36297 1587 4 seen see VBN 36297 1587 5 in in IN 36297 1587 6 paintings painting NNS 36297 1587 7 and and CC 36297 1587 8 many many JJ 36297 1587 9 peculiar peculiar JJ 36297 1587 10 phenomena phenomenon NNS 36297 1587 11 in in IN 36297 1587 12 the the DT 36297 1587 13 various various JJ 36297 1587 14 arts art NNS 36297 1587 15 are be VBP 36297 1587 16 directly directly RB 36297 1587 17 traceable traceable JJ 36297 1587 18 to to IN 36297 1587 19 after after NN 36297 1587 20 - - HYPH 36297 1587 21 images image NNS 36297 1587 22 . . . 36297 1588 1 It -PRON- PRP 36297 1588 2 appears appear VBZ 36297 1588 3 unnecessary unnecessary JJ 36297 1588 4 to to TO 36297 1588 5 detail detail VB 36297 1588 6 the the DT 36297 1588 7 many many JJ 36297 1588 8 effects effect NNS 36297 1588 9 for for IN 36297 1588 10 the the DT 36297 1588 11 explanations explanation NNS 36297 1588 12 or or CC 36297 1588 13 at at IN 36297 1588 14 least least JJS 36297 1588 15 the the DT 36297 1588 16 general general JJ 36297 1588 17 principles principle NNS 36297 1588 18 of of IN 36297 1588 19 after after IN 36297 1588 20 - - HYPH 36297 1588 21 images image NNS 36297 1588 22 are be VBP 36297 1588 23 so so RB 36297 1588 24 simple simple JJ 36297 1588 25 that that IN 36297 1588 26 the the DT 36297 1588 27 reader reader NN 36297 1588 28 should should MD 36297 1588 29 easily easily RB 36297 1588 30 render render VB 36297 1588 31 an an DT 36297 1588 32 analysis analysis NN 36297 1588 33 of of IN 36297 1588 34 any any DT 36297 1588 35 given give VBN 36297 1588 36 case case NN 36297 1588 37 . . . 36297 1589 1 Let let VB 36297 1589 2 us -PRON- PRP 36297 1589 3 assume assume VB 36297 1589 4 that that IN 36297 1589 5 vision vision NN 36297 1589 6 is be VBZ 36297 1589 7 fixed fix VBN 36297 1589 8 upon upon IN 36297 1589 9 a a DT 36297 1589 10 green green JJ 36297 1589 11 square square NN 36297 1589 12 upon upon IN 36297 1589 13 a a DT 36297 1589 14 gray gray JJ 36297 1589 15 or or CC 36297 1589 16 white white JJ 36297 1589 17 background background NN 36297 1589 18 . . . 36297 1590 1 Despite despite IN 36297 1590 2 the the DT 36297 1590 3 utmost utmost JJ 36297 1590 4 effort effort NN 36297 1590 5 on on IN 36297 1590 6 the the DT 36297 1590 7 part part NN 36297 1590 8 of of IN 36297 1590 9 the the DT 36297 1590 10 observer observer NN 36297 1590 11 to to TO 36297 1590 12 gaze gaze VB 36297 1590 13 fixedly fixedly RB 36297 1590 14 upon upon IN 36297 1590 15 this this DT 36297 1590 16 green green JJ 36297 1590 17 square square NN 36297 1590 18 , , , 36297 1590 19 the the DT 36297 1590 20 latter latter NN 36297 1590 21 will will MD 36297 1590 22 begin begin VB 36297 1590 23 to to TO 36297 1590 24 appear appear VB 36297 1590 25 fringed fringe VBN 36297 1590 26 with with IN 36297 1590 27 a a DT 36297 1590 28 pinkish pinkish JJ 36297 1590 29 border border NN 36297 1590 30 . . . 36297 1591 1 This this DT 36297 1591 2 is be VBZ 36297 1591 3 due due JJ 36297 1591 4 to to IN 36297 1591 5 the the DT 36297 1591 6 after after IN 36297 1591 7 - - HYPH 36297 1591 8 image image NN 36297 1591 9 of of IN 36297 1591 10 the the DT 36297 1591 11 green green JJ 36297 1591 12 square square NN 36297 1591 13 and and CC 36297 1591 14 it -PRON- PRP 36297 1591 15 is be VBZ 36297 1591 16 displaced displace VBN 36297 1591 17 slightly slightly RB 36297 1591 18 due due JJ 36297 1591 19 to to IN 36297 1591 20 involuntary involuntary JJ 36297 1591 21 eye eye NN 36297 1591 22 - - HYPH 36297 1591 23 movements movement NNS 36297 1591 24 . . . 36297 1592 1 After after IN 36297 1592 2 gazing gaze VBG 36297 1592 3 as as RB 36297 1592 4 steadily steadily RB 36297 1592 5 as as IN 36297 1592 6 possible possible JJ 36297 1592 7 for for IN 36297 1592 8 a a DT 36297 1592 9 half half NN 36297 1592 10 minute minute NN 36297 1592 11 , , , 36297 1592 12 or or CC 36297 1592 13 even even RB 36297 1592 14 less less JJR 36297 1592 15 , , , 36297 1592 16 if if IN 36297 1592 17 the the DT 36297 1592 18 point point NN 36297 1592 19 of of IN 36297 1592 20 sight sight NN 36297 1592 21 is be VBZ 36297 1592 22 turned turn VBN 36297 1592 23 to to IN 36297 1592 24 the the DT 36297 1592 25 white white NNP 36297 1592 26 paper paper NN 36297 1592 27 a a DT 36297 1592 28 pink pink JJ 36297 1592 29 square square NN 36297 1592 30 is be VBZ 36297 1592 31 seen see VBN 36297 1592 32 upon upon IN 36297 1592 33 it -PRON- PRP 36297 1592 34 . . . 36297 1593 1 Furthermore furthermore RB 36297 1593 2 , , , 36297 1593 3 this this DT 36297 1593 4 pink pink JJ 36297 1593 5 square square JJ 36297 1593 6 moves move NNS 36297 1593 7 over over IN 36297 1593 8 the the DT 36297 1593 9 field field NN 36297 1593 10 with with IN 36297 1593 11 the the DT 36297 1593 12 point point NN 36297 1593 13 of of IN 36297 1593 14 sight sight NN 36297 1593 15 . . . 36297 1594 1 This this DT 36297 1594 2 is be VBZ 36297 1594 3 the the DT 36297 1594 4 type type NN 36297 1594 5 most most RBS 36297 1594 6 generally generally RB 36297 1594 7 noticed notice VBN 36297 1594 8 . . . 36297 1595 1 After after IN 36297 1595 2 - - HYPH 36297 1595 3 images image NNS 36297 1595 4 have have VBP 36297 1595 5 been be VBN 36297 1595 6 classified classify VBN 36297 1595 7 as as IN 36297 1595 8 positive positive JJ 36297 1595 9 and and CC 36297 1595 10 negative negative JJ 36297 1595 11 . . . 36297 1596 1 The the DT 36297 1596 2 former former JJ 36297 1596 3 are be VBP 36297 1596 4 those those DT 36297 1596 5 in in IN 36297 1596 6 which which WDT 36297 1596 7 the the DT 36297 1596 8 distribution distribution NN 36297 1596 9 of of IN 36297 1596 10 light light NN 36297 1596 11 and and CC 36297 1596 12 shade shade NN 36297 1596 13 is be VBZ 36297 1596 14 the the DT 36297 1596 15 same same JJ 36297 1596 16 as as IN 36297 1596 17 in in IN 36297 1596 18 the the DT 36297 1596 19 original original JJ 36297 1596 20 object object NN 36297 1596 21 . . . 36297 1597 1 Those those DT 36297 1597 2 in in IN 36297 1597 3 which which WDT 36297 1597 4 this this DT 36297 1597 5 distribution distribution NN 36297 1597 6 is be VBZ 36297 1597 7 reversed reverse VBN 36297 1597 8 , , , 36297 1597 9 as as IN 36297 1597 10 in in IN 36297 1597 11 the the DT 36297 1597 12 photographic photographic JJ 36297 1597 13 negative negative NN 36297 1597 14 , , , 36297 1597 15 are be VBP 36297 1597 16 termed term VBN 36297 1597 17 " " `` 36297 1597 18 negative negative JJ 36297 1597 19 . . . 36297 1597 20 " " '' 36297 1598 1 After after IN 36297 1598 2 - - HYPH 36297 1598 3 images image NNS 36297 1598 4 undergo undergo VBP 36297 1598 5 a a DT 36297 1598 6 variety variety NN 36297 1598 7 of of IN 36297 1598 8 changes change NNS 36297 1598 9 in in IN 36297 1598 10 color color NN 36297 1598 11 but but CC 36297 1598 12 in in IN 36297 1598 13 general general JJ 36297 1598 14 there there EX 36297 1598 15 are be VBP 36297 1598 16 two two CD 36297 1598 17 important important JJ 36297 1598 18 states state NNS 36297 1598 19 . . . 36297 1599 1 In in IN 36297 1599 2 one one CD 36297 1599 3 the the DT 36297 1599 4 color color NN 36297 1599 5 is be VBZ 36297 1599 6 the the DT 36297 1599 7 same same JJ 36297 1599 8 as as IN 36297 1599 9 in in IN 36297 1599 10 the the DT 36297 1599 11 original original JJ 36297 1599 12 object object NN 36297 1599 13 and and CC 36297 1599 14 in in IN 36297 1599 15 the the DT 36297 1599 16 other other JJ 36297 1599 17 it -PRON- PRP 36297 1599 18 is be VBZ 36297 1599 19 approximately approximately RB 36297 1599 20 complementary complementary JJ 36297 1599 21 to to IN 36297 1599 22 the the DT 36297 1599 23 original original JJ 36297 1599 24 color color NN 36297 1599 25 . . . 36297 1600 1 In in IN 36297 1600 2 general general JJ 36297 1600 3 the the DT 36297 1600 4 negative negative JJ 36297 1600 5 after after IN 36297 1600 6 - - HYPH 36297 1600 7 image image NN 36297 1600 8 is be VBZ 36297 1600 9 approximately approximately RB 36297 1600 10 complementary complementary JJ 36297 1600 11 in in IN 36297 1600 12 color color NN 36297 1600 13 to to IN 36297 1600 14 the the DT 36297 1600 15 color color NN 36297 1600 16 of of IN 36297 1600 17 the the DT 36297 1600 18 original original JJ 36297 1600 19 object object NN 36297 1600 20 . . . 36297 1601 1 After after IN 36297 1601 2 - - HYPH 36297 1601 3 images image NNS 36297 1601 4 are be VBP 36297 1601 5 best best RB 36297 1601 6 observed observed JJ 36297 1601 7 when when WRB 36297 1601 8 the the DT 36297 1601 9 eyes eye NNS 36297 1601 10 are be VBP 36297 1601 11 well well RB 36297 1601 12 rested rest VBN 36297 1601 13 , , , 36297 1601 14 as as IN 36297 1601 15 in in IN 36297 1601 16 the the DT 36297 1601 17 morning morning NN 36297 1601 18 upon upon IN 36297 1601 19 awakening awaken VBG 36297 1601 20 . . . 36297 1602 1 With with IN 36297 1602 2 a a DT 36297 1602 3 little little JJ 36297 1602 4 practice practice NN 36297 1602 5 in in IN 36297 1602 6 giving give VBG 36297 1602 7 attention attention NN 36297 1602 8 to to IN 36297 1602 9 them -PRON- PRP 36297 1602 10 , , , 36297 1602 11 they -PRON- PRP 36297 1602 12 can can MD 36297 1602 13 be be VB 36297 1602 14 seen see VBN 36297 1602 15 floating float VBG 36297 1602 16 in in IN 36297 1602 17 the the DT 36297 1602 18 air air NN 36297 1602 19 , , , 36297 1602 20 in in IN 36297 1602 21 the the DT 36297 1602 22 indefinite indefinite JJ 36297 1602 23 field field NN 36297 1602 24 of of IN 36297 1602 25 the the DT 36297 1602 26 closed close VBN 36297 1602 27 eyes eye NNS 36297 1602 28 , , , 36297 1602 29 upon upon IN 36297 1602 30 a a DT 36297 1602 31 wall wall NN 36297 1602 32 , , , 36297 1602 33 or or CC 36297 1602 34 elsewhere elsewhere RB 36297 1602 35 , , , 36297 1602 36 and and CC 36297 1602 37 the the DT 36297 1602 38 changes change NNS 36297 1602 39 in in IN 36297 1602 40 the the DT 36297 1602 41 brightness brightness NN 36297 1602 42 and and CC 36297 1602 43 color color NN 36297 1602 44 can can MD 36297 1602 45 be be VB 36297 1602 46 readily readily RB 36297 1602 47 followed follow VBN 36297 1602 48 . . . 36297 1603 1 Negative negative JJ 36297 1603 2 after after NN 36297 1603 3 - - HYPH 36297 1603 4 images image NNS 36297 1603 5 are be VBP 36297 1603 6 sometimes sometimes RB 36297 1603 7 very very RB 36297 1603 8 persistent persistent JJ 36297 1603 9 and and CC 36297 1603 10 therefore therefore RB 36297 1603 11 are be VBP 36297 1603 12 more more RBR 36297 1603 13 commonly commonly RB 36297 1603 14 noticed notice VBN 36297 1603 15 than than IN 36297 1603 16 positive positive JJ 36297 1603 17 ones one NNS 36297 1603 18 . . . 36297 1604 1 The the DT 36297 1604 2 positive positive JJ 36297 1604 3 after after IN 36297 1604 4 - - HYPH 36297 1604 5 image image NN 36297 1604 6 is be VBZ 36297 1604 7 due due JJ 36297 1604 8 to to IN 36297 1604 9 retinal retinal JJ 36297 1604 10 inertia inertia NN 36297 1604 11 , , , 36297 1604 12 that that RB 36297 1604 13 is is RB 36297 1604 14 , , , 36297 1604 15 to to IN 36297 1604 16 the the DT 36297 1604 17 persistency persistency NN 36297 1604 18 of of IN 36297 1604 19 the the DT 36297 1604 20 visual visual JJ 36297 1604 21 process process NN 36297 1604 22 after after IN 36297 1604 23 the the DT 36297 1604 24 actual actual JJ 36297 1604 25 stimulus stimulus NN 36297 1604 26 has have VBZ 36297 1604 27 been be VBN 36297 1604 28 removed remove VBN 36297 1604 29 . . . 36297 1605 1 It -PRON- PRP 36297 1605 2 is be VBZ 36297 1605 3 of of IN 36297 1605 4 relatively relatively RB 36297 1605 5 brief brief JJ 36297 1605 6 duration duration NN 36297 1605 7 . . . 36297 1606 1 If if IN 36297 1606 2 an an DT 36297 1606 3 after after IN 36297 1606 4 - - HYPH 36297 1606 5 image image NN 36297 1606 6 of of IN 36297 1606 7 a a DT 36297 1606 8 window window NN 36297 1606 9 is be VBZ 36297 1606 10 projected project VBN 36297 1606 11 on on IN 36297 1606 12 a a DT 36297 1606 13 white white JJ 36297 1606 14 area area NN 36297 1606 15 it -PRON- PRP 36297 1606 16 is be VBZ 36297 1606 17 likely likely JJ 36297 1606 18 to to TO 36297 1606 19 appear appear VB 36297 1606 20 as as IN 36297 1606 21 a a DT 36297 1606 22 " " `` 36297 1606 23 negative negative JJ 36297 1606 24 " " '' 36297 1606 25 when when WRB 36297 1606 26 projected project VBN 36297 1606 27 upon upon IN 36297 1606 28 a a DT 36297 1606 29 white white JJ 36297 1606 30 background background NN 36297 1606 31 , , , 36297 1606 32 and and CC 36297 1606 33 as as IN 36297 1606 34 a a DT 36297 1606 35 " " `` 36297 1606 36 positive positive JJ 36297 1606 37 " " '' 36297 1606 38 upon upon IN 36297 1606 39 a a DT 36297 1606 40 dark dark JJ 36297 1606 41 background background NN 36297 1606 42 , , , 36297 1606 43 such such JJ 36297 1606 44 as as IN 36297 1606 45 is be VBZ 36297 1606 46 readily readily RB 36297 1606 47 provided provide VBN 36297 1606 48 by by IN 36297 1606 49 closing close VBG 36297 1606 50 the the DT 36297 1606 51 eyes eye NNS 36297 1606 52 . . . 36297 1607 1 It -PRON- PRP 36297 1607 2 may may MD 36297 1607 3 be be VB 36297 1607 4 of of IN 36297 1607 5 interest interest NN 36297 1607 6 for for IN 36297 1607 7 the the DT 36297 1607 8 reader reader NN 36297 1607 9 to to TO 36297 1607 10 obtain obtain VB 36297 1607 11 an an DT 36297 1607 12 after after IN 36297 1607 13 - - HYPH 36297 1607 14 image image NN 36297 1607 15 of of IN 36297 1607 16 a a DT 36297 1607 17 bright bright JJ 36297 1607 18 surface surface NN 36297 1607 19 of of IN 36297 1607 20 a a DT 36297 1607 21 light light JJ 36297 1607 22 - - HYPH 36297 1607 23 source source NN 36297 1607 24 and and CC 36297 1607 25 study study VB 36297 1607 26 its -PRON- PRP$ 36297 1607 27 color color NN 36297 1607 28 changes change NNS 36297 1607 29 with with IN 36297 1607 30 the the DT 36297 1607 31 eye eye NN 36297 1607 32 closed close VBN 36297 1607 33 . . . 36297 1608 1 Upon upon IN 36297 1608 2 repeating repeat VBG 36297 1608 3 the the DT 36297 1608 4 experiment experiment NN 36297 1608 5 the the DT 36297 1608 6 progression progression NN 36297 1608 7 of of IN 36297 1608 8 colors color NNS 36297 1608 9 will will MD 36297 1608 10 be be VB 36297 1608 11 found find VBN 36297 1608 12 to to TO 36297 1608 13 be be VB 36297 1608 14 always always RB 36297 1608 15 the the DT 36297 1608 16 same same JJ 36297 1608 17 for for IN 36297 1608 18 the the DT 36297 1608 19 same same JJ 36297 1608 20 conditions condition NNS 36297 1608 21 . . . 36297 1609 1 The the DT 36297 1609 2 duration duration NN 36297 1609 3 of of IN 36297 1609 4 the the DT 36297 1609 5 after after IN 36297 1609 6 - - HYPH 36297 1609 7 image image NN 36297 1609 8 will will MD 36297 1609 9 be be VB 36297 1609 10 found find VBN 36297 1609 11 to to TO 36297 1609 12 vary vary VB 36297 1609 13 with with IN 36297 1609 14 the the DT 36297 1609 15 brightness brightness NN 36297 1609 16 and and CC 36297 1609 17 period period NN 36297 1609 18 of of IN 36297 1609 19 fixation fixation NN 36297 1609 20 of of IN 36297 1609 21 the the DT 36297 1609 22 object object NN 36297 1609 23 . . . 36297 1610 1 It -PRON- PRP 36297 1610 2 is be VBZ 36297 1610 3 interesting interesting JJ 36297 1610 4 to to TO 36297 1610 5 note note VB 36297 1610 6 that that IN 36297 1610 7 an an DT 36297 1610 8 after after IN 36297 1610 9 - - HYPH 36297 1610 10 image image NN 36297 1610 11 is be VBZ 36297 1610 12 seen see VBN 36297 1610 13 with with IN 36297 1610 14 difficulty difficulty NN 36297 1610 15 when when WRB 36297 1610 16 the the DT 36297 1610 17 eyes eye NNS 36297 1610 18 are be VBP 36297 1610 19 in in IN 36297 1610 20 motion motion NN 36297 1610 21 , , , 36297 1610 22 but but CC 36297 1610 23 it -PRON- PRP 36297 1610 24 becomes become VBZ 36297 1610 25 quite quite RB 36297 1610 26 conspicuous conspicuous JJ 36297 1610 27 when when WRB 36297 1610 28 the the DT 36297 1610 29 eyes eye NNS 36297 1610 30 are be VBP 36297 1610 31 brought bring VBN 36297 1610 32 to to IN 36297 1610 33 rest rest NN 36297 1610 34 . . . 36297 1611 1 An an DT 36297 1611 2 after after IN 36297 1611 3 - - HYPH 36297 1611 4 image image NN 36297 1611 5 due due IN 36297 1611 6 to to IN 36297 1611 7 the the DT 36297 1611 8 stimulation stimulation NN 36297 1611 9 of of IN 36297 1611 10 only only RB 36297 1611 11 one one CD 36297 1611 12 eye eye NN 36297 1611 13 sometimes sometimes RB 36297 1611 14 seems seem VBZ 36297 1611 15 to to TO 36297 1611 16 be be VB 36297 1611 17 seen see VBN 36297 1611 18 by by IN 36297 1611 19 the the DT 36297 1611 20 other other JJ 36297 1611 21 eye eye NN 36297 1611 22 . . . 36297 1612 1 Naturally naturally RB 36297 1612 2 this this DT 36297 1612 3 has have VBZ 36297 1612 4 given give VBN 36297 1612 5 rise rise NN 36297 1612 6 to to IN 36297 1612 7 the the DT 36297 1612 8 suggestion suggestion NN 36297 1612 9 that that IN 36297 1612 10 the the DT 36297 1612 11 seat seat NN 36297 1612 12 of of IN 36297 1612 13 after after IN 36297 1612 14 - - HYPH 36297 1612 15 images image NNS 36297 1612 16 is be VBZ 36297 1612 17 central central JJ 36297 1612 18 rather rather RB 36297 1612 19 than than IN 36297 1612 20 peripheral peripheral JJ 36297 1612 21 ; ; : 36297 1612 22 that that RB 36297 1612 23 is is RB 36297 1612 24 , , , 36297 1612 25 in in IN 36297 1612 26 the the DT 36297 1612 27 brain brain NN 36297 1612 28 rather rather RB 36297 1612 29 than than IN 36297 1612 30 at at IN 36297 1612 31 the the DT 36297 1612 32 retina retina NNP 36297 1612 33 . . . 36297 1613 1 However however RB 36297 1613 2 , , , 36297 1613 3 this this DT 36297 1613 4 is be VBZ 36297 1613 5 not not RB 36297 1613 6 generally generally RB 36297 1613 7 the the DT 36297 1613 8 case case NN 36297 1613 9 and and CC 36297 1613 10 the the DT 36297 1613 11 experimental experimental JJ 36297 1613 12 evidence evidence NN 36297 1613 13 weighs weigh VBZ 36297 1613 14 heavily heavily RB 36297 1613 15 against against IN 36297 1613 16 this this DT 36297 1613 17 conclusion conclusion NN 36297 1613 18 . . . 36297 1614 1 If if IN 36297 1614 2 Fig Fig NNP 36297 1614 3 . . . 36297 1615 1 52 52 CD 36297 1615 2 is be VBZ 36297 1615 3 revolved revolve VBN 36297 1615 4 about about IN 36297 1615 5 its -PRON- PRP$ 36297 1615 6 center center NN 36297 1615 7 and and CC 36297 1615 8 fixated fixate VBD 36297 1615 9 for for IN 36297 1615 10 some some DT 36297 1615 11 time time NN 36297 1615 12 striking striking JJ 36297 1615 13 effects effect NNS 36297 1615 14 are be VBP 36297 1615 15 obtained obtain VBN 36297 1615 16 upon upon IN 36297 1615 17 looking look VBG 36297 1615 18 away away RB 36297 1615 19 suddenly suddenly RB 36297 1615 20 upon upon IN 36297 1615 21 any any DT 36297 1615 22 object object NN 36297 1615 23 . . . 36297 1616 1 The the DT 36297 1616 2 latter latter NN 36297 1616 3 will will MD 36297 1616 4 appear appear VB 36297 1616 5 to to TO 36297 1616 6 shrink shrink VB 36297 1616 7 if if IN 36297 1616 8 the the DT 36297 1616 9 spiral spiral NN 36297 1616 10 has have VBZ 36297 1616 11 seemed seem VBN 36297 1616 12 to to TO 36297 1616 13 run run VB 36297 1616 14 outward outward RB 36297 1616 15 , , , 36297 1616 16 or or CC 36297 1616 17 to to TO 36297 1616 18 expand expand VB 36297 1616 19 if if IN 36297 1616 20 the the DT 36297 1616 21 spiral spiral NN 36297 1616 22 has have VBZ 36297 1616 23 seemed seem VBN 36297 1616 24 to to TO 36297 1616 25 run run VB 36297 1616 26 inward inward RB 36297 1616 27 . . . 36297 1617 1 These these DT 36297 1617 2 are be VBP 36297 1617 3 clearly clearly RB 36297 1617 4 after after IN 36297 1617 5 - - HYPH 36297 1617 6 images image NNS 36297 1617 7 of of IN 36297 1617 8 motion motion NN 36297 1617 9 . . . 36297 1618 1 As as IN 36297 1618 2 stated state VBN 36297 1618 3 elsewhere elsewhere RB 36297 1618 4 , , , 36297 1618 5 we -PRON- PRP 36297 1618 6 may may MD 36297 1618 7 have have VB 36297 1618 8 illusions illusion NNS 36297 1618 9 of of IN 36297 1618 10 after after IN 36297 1618 11 - - HYPH 36297 1618 12 images image NNS 36297 1618 13 as as RB 36297 1618 14 well well RB 36297 1618 15 as as IN 36297 1618 16 of of IN 36297 1618 17 the the DT 36297 1618 18 original original JJ 36297 1618 19 images image NNS 36297 1618 20 . . . 36297 1619 1 For for IN 36297 1619 2 example example NN 36297 1619 3 , , , 36297 1619 4 if if IN 36297 1619 5 a a DT 36297 1619 6 clearly clearly RB 36297 1619 7 defined define VBN 36297 1619 8 plane plane NN 36297 1619 9 geometrical geometrical JJ 36297 1619 10 figure figure NN 36297 1619 11 such such JJ 36297 1619 12 as as IN 36297 1619 13 a a DT 36297 1619 14 cross cross NN 36297 1619 15 or or CC 36297 1619 16 square square NN 36297 1619 17 is be VBZ 36297 1619 18 bright bright JJ 36297 1619 19 enough enough RB 36297 1619 20 to to TO 36297 1619 21 produce produce VB 36297 1619 22 a a DT 36297 1619 23 strong strong JJ 36297 1619 24 after after IN 36297 1619 25 - - HYPH 36297 1619 26 image image NN 36297 1619 27 , , , 36297 1619 28 the the DT 36297 1619 29 latter latter JJ 36297 1619 30 when when WRB 36297 1619 31 projected project VBN 36297 1619 32 upon upon IN 36297 1619 33 a a DT 36297 1619 34 perspective perspective NN 36297 1619 35 drawing drawing NN 36297 1619 36 will will MD 36297 1619 37 appear appear VB 36297 1619 38 distorted distort VBN 36297 1619 39 ; ; : 36297 1619 40 that that RB 36297 1619 41 is is RB 36297 1619 42 , , , 36297 1619 43 it -PRON- PRP 36297 1619 44 is be VBZ 36297 1619 45 likely likely JJ 36297 1619 46 to to TO 36297 1619 47 appear appear VB 36297 1619 48 in in IN 36297 1619 49 perspective perspective NN 36297 1619 50 . . . 36297 1620 1 A a DT 36297 1620 2 simple simple JJ 36297 1620 3 way way NN 36297 1620 4 of of IN 36297 1620 5 demonstrating demonstrate VBG 36297 1620 6 after after IN 36297 1620 7 - - HYPH 36297 1620 8 images image NNS 36297 1620 9 and and CC 36297 1620 10 their -PRON- PRP$ 36297 1620 11 duration duration NN 36297 1620 12 is be VBZ 36297 1620 13 to to TO 36297 1620 14 move move VB 36297 1620 15 the the DT 36297 1620 16 object object NN 36297 1620 17 producing produce VBG 36297 1620 18 them -PRON- PRP 36297 1620 19 . . . 36297 1621 1 For for IN 36297 1621 2 example example NN 36297 1621 3 , , , 36297 1621 4 extinguish extinguish VB 36297 1621 5 a a DT 36297 1621 6 match match NN 36297 1621 7 and and CC 36297 1621 8 move move VB 36297 1621 9 the the DT 36297 1621 10 glowing glowing JJ 36297 1621 11 end end NN 36297 1621 12 . . . 36297 1622 1 If if IN 36297 1622 2 observed observe VBN 36297 1622 3 carefully carefully RB 36297 1622 4 without without IN 36297 1622 5 moving move VBG 36297 1622 6 the the DT 36297 1622 7 eye eye NN 36297 1622 8 a a DT 36297 1622 9 bluish bluish JJ 36297 1622 10 after after IN 36297 1622 11 - - HYPH 36297 1622 12 image image NN 36297 1622 13 will will MD 36297 1622 14 be be VB 36297 1622 15 seen see VBN 36297 1622 16 to to TO 36297 1622 17 follow follow VB 36297 1622 18 the the DT 36297 1622 19 glowing glowing JJ 36297 1622 20 end end NN 36297 1622 21 of of IN 36297 1622 22 the the DT 36297 1622 23 match match NN 36297 1622 24 . . . 36297 1623 1 In in IN 36297 1623 2 this this DT 36297 1623 3 case case NN 36297 1623 4 the the DT 36297 1623 5 eyes eye NNS 36297 1623 6 should should MD 36297 1623 7 be be VB 36297 1623 8 directed direct VBN 36297 1623 9 straight straight RB 36297 1623 10 ahead ahead RB 36297 1623 11 while while IN 36297 1623 12 the the DT 36297 1623 13 stimulus stimulus NN 36297 1623 14 is be VBZ 36297 1623 15 moving move VBG 36297 1623 16 and and CC 36297 1623 17 the the DT 36297 1623 18 observation observation NN 36297 1623 19 must must MD 36297 1623 20 be be VB 36297 1623 21 made make VBN 36297 1623 22 by by IN 36297 1623 23 averted averted JJ 36297 1623 24 or or CC 36297 1623 25 indirect indirect JJ 36297 1623 26 vision vision NN 36297 1623 27 . . . 36297 1624 1 _ _ NNP 36297 1624 2 Growth Growth NNP 36297 1624 3 and and CC 36297 1624 4 Decay Decay NNP 36297 1624 5 of of IN 36297 1624 6 Sensation._--Although sensation._--although CD 36297 1624 7 many many JJ 36297 1624 8 after after NNS 36297 1624 9 - - HYPH 36297 1624 10 images image NNS 36297 1624 11 may may MD 36297 1624 12 not not RB 36297 1624 13 be be VB 36297 1624 14 considered consider VBN 36297 1624 15 to to TO 36297 1624 16 be be VB 36297 1624 17 illusions illusion NNS 36297 1624 18 in in IN 36297 1624 19 the the DT 36297 1624 20 sense sense NN 36297 1624 21 in in IN 36297 1624 22 which which WDT 36297 1624 23 the the DT 36297 1624 24 term term NN 36297 1624 25 is be VBZ 36297 1624 26 used use VBN 36297 1624 27 here here RB 36297 1624 28 , , , 36297 1624 29 there there EX 36297 1624 30 are be VBP 36297 1624 31 many many JJ 36297 1624 32 illusions illusion NNS 36297 1624 33 in in IN 36297 1624 34 which which WDT 36297 1624 35 they -PRON- PRP 36297 1624 36 at at IN 36297 1624 37 least least JJS 36297 1624 38 play play VBP 36297 1624 39 a a DT 36297 1624 40 part part NN 36297 1624 41 . . . 36297 1625 1 Furthermore furthermore RB 36297 1625 2 , , , 36297 1625 3 it -PRON- PRP 36297 1625 4 is be VBZ 36297 1625 5 the the DT 36297 1625 6 intention intention NN 36297 1625 7 throughout throughout IN 36297 1625 8 these these DT 36297 1625 9 chapters chapter NNS 36297 1625 10 to to TO 36297 1625 11 adhere adhere VB 36297 1625 12 to to IN 36297 1625 13 a a DT 36297 1625 14 discussion discussion NN 36297 1625 15 of of IN 36297 1625 16 " " `` 36297 1625 17 static static JJ 36297 1625 18 " " '' 36297 1625 19 illusions illusion NNS 36297 1625 20 , , , 36297 1625 21 it -PRON- PRP 36297 1625 22 is be VBZ 36297 1625 23 difficult difficult JJ 36297 1625 24 to to TO 36297 1625 25 avoid avoid VB 36297 1625 26 touching touch VBG 36297 1625 27 occasionally occasionally RB 36297 1625 28 upon upon IN 36297 1625 29 motion motion NN 36297 1625 30 . . . 36297 1626 1 The the DT 36297 1626 2 eyes eye NNS 36297 1626 3 are be VBP 36297 1626 4 in in IN 36297 1626 5 motion motion NN 36297 1626 6 most most JJS 36297 1626 7 of of IN 36297 1626 8 the the DT 36297 1626 9 time time NN 36297 1626 10 , , , 36297 1626 11 hence hence RB 36297 1626 12 , , , 36297 1626 13 certain certain JJ 36297 1626 14 effects effect NNS 36297 1626 15 of of IN 36297 1626 16 an an DT 36297 1626 17 illusory illusory JJ 36297 1626 18 nature nature NN 36297 1626 19 may may MD 36297 1626 20 be be VB 36297 1626 21 superposed superpose VBN 36297 1626 22 upon upon IN 36297 1626 23 stationary stationary JJ 36297 1626 24 objects object NNS 36297 1626 25 . . . 36297 1627 1 The the DT 36297 1627 2 persistence persistence NN 36297 1627 3 of of IN 36297 1627 4 vision vision NN 36297 1627 5 has have VBZ 36297 1627 6 been be VBN 36297 1627 7 demonstrated demonstrate VBN 36297 1627 8 by by IN 36297 1627 9 every every DT 36297 1627 10 small small JJ 36297 1627 11 boy boy NN 36297 1627 12 as as IN 36297 1627 13 he -PRON- PRP 36297 1627 14 waved wave VBD 36297 1627 15 a a DT 36297 1627 16 glowing glowing JJ 36297 1627 17 stick stick NN 36297 1627 18 seized seize VBN 36297 1627 19 from from IN 36297 1627 20 a a DT 36297 1627 21 bonfire bonfire NN 36297 1627 22 . . . 36297 1628 1 Fireworks firework NNS 36297 1628 2 owe owe VBP 36297 1628 3 much much JJ 36297 1628 4 of of IN 36297 1628 5 their -PRON- PRP$ 36297 1628 6 beauty beauty NN 36297 1628 7 to to IN 36297 1628 8 this this DT 36297 1628 9 phenomenon phenomenon NN 36297 1628 10 . . . 36297 1629 1 A a DT 36297 1629 2 rapidly rapidly RB 36297 1629 3 revolving revolve VBG 36297 1629 4 spoked spoked JJ 36297 1629 5 wheel wheel NN 36297 1629 6 may may MD 36297 1629 7 appear appear VB 36297 1629 8 to to TO 36297 1629 9 be be VB 36297 1629 10 a a DT 36297 1629 11 more more RBR 36297 1629 12 or or CC 36297 1629 13 less less RBR 36297 1629 14 transparent transparent JJ 36297 1629 15 disk disk NN 36297 1629 16 , , , 36297 1629 17 but but CC 36297 1629 18 occasionally occasionally RB 36297 1629 19 when when WRB 36297 1629 20 a a DT 36297 1629 21 rapid rapid JJ 36297 1629 22 eye eye NN 36297 1629 23 - - HYPH 36297 1629 24 movement movement NN 36297 1629 25 moves move VBZ 36297 1629 26 the the DT 36297 1629 27 point point NN 36297 1629 28 of of IN 36297 1629 29 sight sight NN 36297 1629 30 with with IN 36297 1629 31 sufficient sufficient JJ 36297 1629 32 speed speed NN 36297 1629 33 in in IN 36297 1629 34 the the DT 36297 1629 35 direction direction NN 36297 1629 36 of of IN 36297 1629 37 motion motion NN 36297 1629 38 , , , 36297 1629 39 the the DT 36297 1629 40 spokes spoke NNS 36297 1629 41 reappear reappear VBP 36297 1629 42 momentarily momentarily RB 36297 1629 43 . . . 36297 1630 1 Motion motion NN 36297 1630 2 - - HYPH 36297 1630 3 pictures picture NNS 36297 1630 4 owe owe VBP 36297 1630 5 their -PRON- PRP$ 36297 1630 6 success success NN 36297 1630 7 to to IN 36297 1630 8 this this DT 36297 1630 9 visual visual JJ 36297 1630 10 property property NN 36297 1630 11 -- -- : 36297 1630 12 the the DT 36297 1630 13 persistence persistence NN 36297 1630 14 of of IN 36297 1630 15 vision vision NN 36297 1630 16 . . . 36297 1631 1 If if IN 36297 1631 2 a a DT 36297 1631 3 lantern lantern JJ 36297 1631 4 - - HYPH 36297 1631 5 slide slide NN 36297 1631 6 picture picture NN 36297 1631 7 be be VB 36297 1631 8 focused focus VBN 36297 1631 9 upon upon IN 36297 1631 10 black black JJ 36297 1631 11 velvet velvet NNS 36297 1631 12 or or CC 36297 1631 13 upon upon IN 36297 1631 14 a a DT 36297 1631 15 dark dark JJ 36297 1631 16 doorway doorway NN 36297 1631 17 , , , 36297 1631 18 the the DT 36297 1631 19 projected project VBN 36297 1631 20 image image NN 36297 1631 21 will will MD 36297 1631 22 not not RB 36297 1631 23 be be VB 36297 1631 24 seen see VBN 36297 1631 25 . . . 36297 1632 1 However however RB 36297 1632 2 , , , 36297 1632 3 if if IN 36297 1632 4 a a DT 36297 1632 5 white white JJ 36297 1632 6 rod rod NN 36297 1632 7 be be VBP 36297 1632 8 moved move VBN 36297 1632 9 rapidly rapidly RB 36297 1632 10 enough enough RB 36297 1632 11 in in IN 36297 1632 12 the the DT 36297 1632 13 plane plane NN 36297 1632 14 of of IN 36297 1632 15 the the DT 36297 1632 16 image image NN 36297 1632 17 , , , 36297 1632 18 the the DT 36297 1632 19 latter latter JJ 36297 1632 20 may may MD 36297 1632 21 be be VB 36297 1632 22 seen see VBN 36297 1632 23 in in IN 36297 1632 24 its -PRON- PRP$ 36297 1632 25 entirety entirety NN 36297 1632 26 . . . 36297 1633 1 The the DT 36297 1633 2 mixture mixture NN 36297 1633 3 of of IN 36297 1633 4 colors color NNS 36297 1633 5 , , , 36297 1633 6 by by IN 36297 1633 7 rotating rotate VBG 36297 1633 8 them -PRON- PRP 36297 1633 9 on on IN 36297 1633 10 disks disk NNS 36297 1633 11 , , , 36297 1633 12 owes owe VBZ 36297 1633 13 its -PRON- PRP$ 36297 1633 14 possibility possibility NN 36297 1633 15 to to IN 36297 1633 16 the the DT 36297 1633 17 persistence persistence NN 36297 1633 18 of of IN 36297 1633 19 the the DT 36297 1633 20 color color NN 36297 1633 21 - - HYPH 36297 1633 22 sensations sensation NNS 36297 1633 23 beyond beyond IN 36297 1633 24 the the DT 36297 1633 25 period period NN 36297 1633 26 of of IN 36297 1633 27 actual actual JJ 36297 1633 28 stimulation stimulation NN 36297 1633 29 . . . 36297 1634 1 The the DT 36297 1634 2 fact fact NN 36297 1634 3 that that IN 36297 1634 4 it -PRON- PRP 36297 1634 5 takes take VBZ 36297 1634 6 time time NN 36297 1634 7 for for IN 36297 1634 8 sensations sensation NNS 36297 1634 9 of of IN 36297 1634 10 light light NN 36297 1634 11 to to TO 36297 1634 12 grow grow VB 36297 1634 13 and and CC 36297 1634 14 decay decay VB 36297 1634 15 is be VBZ 36297 1634 16 not not RB 36297 1634 17 as as RB 36297 1634 18 important important JJ 36297 1634 19 here here RB 36297 1634 20 as as IN 36297 1634 21 the the DT 36297 1634 22 fact fact NN 36297 1634 23 that that IN 36297 1634 24 the the DT 36297 1634 25 rates rate NNS 36297 1634 26 of of IN 36297 1634 27 growth growth NN 36297 1634 28 , , , 36297 1634 29 and and CC 36297 1634 30 also also RB 36297 1634 31 of of IN 36297 1634 32 decay decay NN 36297 1634 33 , , , 36297 1634 34 vary vary VBP 36297 1634 35 for for IN 36297 1634 36 different different JJ 36297 1634 37 colors color NNS 36297 1634 38 . . . 36297 1635 1 In in IN 36297 1635 2 general general JJ 36297 1635 3 , , , 36297 1635 4 the the DT 36297 1635 5 growth growth NN 36297 1635 6 and and CC 36297 1635 7 the the DT 36297 1635 8 decay decay NN 36297 1635 9 are be VBP 36297 1635 10 not not RB 36297 1635 11 of of IN 36297 1635 12 similar similar JJ 36297 1635 13 or or CC 36297 1635 14 uniform uniform JJ 36297 1635 15 rates rate NNS 36297 1635 16 . . . 36297 1636 1 Furthermore furthermore RB 36297 1636 2 , , , 36297 1636 3 the the DT 36297 1636 4 sensation sensation NN 36297 1636 5 often often RB 36297 1636 6 initially initially RB 36297 1636 7 " " `` 36297 1636 8 overshoots overshoot NNS 36297 1636 9 " " '' 36297 1636 10 its -PRON- PRP$ 36297 1636 11 final final JJ 36297 1636 12 steady steady JJ 36297 1636 13 value value NN 36297 1636 14 , , , 36297 1636 15 the the DT 36297 1636 16 amount amount NN 36297 1636 17 of of IN 36297 1636 18 " " `` 36297 1636 19 overshooting overshoot VBG 36297 1636 20 " " '' 36297 1636 21 depending depend VBG 36297 1636 22 upon upon IN 36297 1636 23 the the DT 36297 1636 24 intensity intensity NN 36297 1636 25 and and CC 36297 1636 26 color color NN 36297 1636 27 of of IN 36297 1636 28 the the DT 36297 1636 29 stimulus stimulus NN 36297 1636 30 . . . 36297 1637 1 These these DT 36297 1637 2 effects effect NNS 36297 1637 3 may may MD 36297 1637 4 be be VB 36297 1637 5 witnessed witness VBN 36297 1637 6 in in IN 36297 1637 7 their -PRON- PRP$ 36297 1637 8 extensive extensive JJ 36297 1637 9 variety variety NN 36297 1637 10 by by IN 36297 1637 11 rotating rotate VBG 36297 1637 12 disks disk NNS 36297 1637 13 so so RB 36297 1637 14 constructed construct VBD 36297 1637 15 that that IN 36297 1637 16 black black JJ 36297 1637 17 and and CC 36297 1637 18 various various JJ 36297 1637 19 colors color NNS 36297 1637 20 stimulate stimulate VBP 36297 1637 21 the the DT 36297 1637 22 retina retina NNP 36297 1637 23 in in IN 36297 1637 24 definite definite JJ 36297 1637 25 orders order NNS 36297 1637 26 . . . 36297 1638 1 An an DT 36297 1638 2 interesting interesting JJ 36297 1638 3 case case NN 36297 1638 4 of of IN 36297 1638 5 this this DT 36297 1638 6 kind kind NN 36297 1638 7 may may MD 36297 1638 8 be be VB 36297 1638 9 demonstrated demonstrate VBN 36297 1638 10 by by IN 36297 1638 11 rotating rotate VBG 36297 1638 12 the the DT 36297 1638 13 disk disk NN 36297 1638 14 shown show VBN 36297 1638 15 in in IN 36297 1638 16 Fig Fig NNP 36297 1638 17 . . . 36297 1639 1 67 67 CD 36297 1639 2 . . . 36297 1640 1 Notwithstanding notwithstanding IN 36297 1640 2 the the DT 36297 1640 3 fact fact NN 36297 1640 4 that that IN 36297 1640 5 these these DT 36297 1640 6 are be VBP 36297 1640 7 only only RB 36297 1640 8 black black JJ 36297 1640 9 and and CC 36297 1640 10 white white JJ 36297 1640 11 stimuli stimulus NNS 36297 1640 12 , , , 36297 1640 13 a a DT 36297 1640 14 series series NN 36297 1640 15 of of IN 36297 1640 16 colored color VBN 36297 1640 17 rings ring NNS 36297 1640 18 is be VBZ 36297 1640 19 seen see VBN 36297 1640 20 varying vary VBG 36297 1640 21 from from IN 36297 1640 22 a a DT 36297 1640 23 reddish reddish JJ 36297 1640 24 chocolate chocolate NN 36297 1640 25 to to IN 36297 1640 26 a a DT 36297 1640 27 blue blue JJ 36297 1640 28 - - HYPH 36297 1640 29 green green JJ 36297 1640 30 . . . 36297 1641 1 Experiment experiment NN 36297 1641 2 will will MD 36297 1641 3 determine determine VB 36297 1641 4 the the DT 36297 1641 5 best good JJS 36297 1641 6 speed speed NN 36297 1641 7 , , , 36297 1641 8 which which WDT 36297 1641 9 is be VBZ 36297 1641 10 rather rather RB 36297 1641 11 slow slow JJ 36297 1641 12 under under IN 36297 1641 13 a a DT 36297 1641 14 moderate moderate JJ 36297 1641 15 intensity intensity NN 36297 1641 16 of of IN 36297 1641 17 illumination illumination NN 36297 1641 18 . . . 36297 1642 1 The the DT 36297 1642 2 reddish reddish JJ 36297 1642 3 rings ring NNS 36297 1642 4 will will MD 36297 1642 5 be be VB 36297 1642 6 outermost outermost JJ 36297 1642 7 and and CC 36297 1642 8 the the DT 36297 1642 9 blue blue JJ 36297 1642 10 - - HYPH 36297 1642 11 green green JJ 36297 1642 12 rings ring NNS 36297 1642 13 innermost innermost VBP 36297 1642 14 when when WRB 36297 1642 15 the the DT 36297 1642 16 disk disk NN 36297 1642 17 is be VBZ 36297 1642 18 rotated rotate VBN 36297 1642 19 in in IN 36297 1642 20 one one CD 36297 1642 21 direction direction NN 36297 1642 22 . . . 36297 1643 1 Upon upon IN 36297 1643 2 reversing reverse VBG 36297 1643 3 the the DT 36297 1643 4 direction direction NN 36297 1643 5 of of IN 36297 1643 6 rotation rotation NN 36297 1643 7 the the DT 36297 1643 8 positions position NNS 36297 1643 9 of of IN 36297 1643 10 these these DT 36297 1643 11 colored color VBN 36297 1643 12 rings ring NNS 36297 1643 13 will will MD 36297 1643 14 be be VB 36297 1643 15 reversed reverse VBN 36297 1643 16 . . . 36297 1644 1 By by IN 36297 1644 2 using use VBG 36297 1644 3 various various JJ 36297 1644 4 colors color NNS 36297 1644 5 , , , 36297 1644 6 such such JJ 36297 1644 7 as as IN 36297 1644 8 red red JJ 36297 1644 9 and and CC 36297 1644 10 green green JJ 36297 1644 11 for for IN 36297 1644 12 the the DT 36297 1644 13 white white JJ 36297 1644 14 and and CC 36297 1644 15 black black JJ 36297 1644 16 respectively respectively RB 36297 1644 17 , , , 36297 1644 18 other other JJ 36297 1644 19 colors color NNS 36297 1644 20 will will MD 36297 1644 21 be be VB 36297 1644 22 produced produce VBN 36297 1644 23 , , , 36297 1644 24 some some DT 36297 1644 25 of of IN 36297 1644 26 which which WDT 36297 1644 27 are be VBP 36297 1644 28 very very RB 36297 1644 29 striking striking JJ 36297 1644 30 . . . 36297 1645 1 The the DT 36297 1645 2 complete complete JJ 36297 1645 3 explanation explanation NN 36297 1645 4 of of IN 36297 1645 5 the the DT 36297 1645 6 phenomenon phenomenon NN 36297 1645 7 is be VBZ 36297 1645 8 not not RB 36297 1645 9 clear clear JJ 36297 1645 10 , , , 36297 1645 11 owing owe VBG 36297 1645 12 to to IN 36297 1645 13 the the DT 36297 1645 14 doubt doubt NN 36297 1645 15 which which WDT 36297 1645 16 exists exist VBZ 36297 1645 17 concerning concern VBG 36297 1645 18 many many JJ 36297 1645 19 of of IN 36297 1645 20 the the DT 36297 1645 21 phenomena phenomenon NNS 36297 1645 22 of of IN 36297 1645 23 color color NN 36297 1645 24 - - HYPH 36297 1645 25 vision vision NN 36297 1645 26 , , , 36297 1645 27 but but CC 36297 1645 28 it -PRON- PRP 36297 1645 29 appears appear VBZ 36297 1645 30 certain certain JJ 36297 1645 31 that that IN 36297 1645 32 the the DT 36297 1645 33 difference difference NN 36297 1645 34 in in IN 36297 1645 35 the the DT 36297 1645 36 rates rate NNS 36297 1645 37 of of IN 36297 1645 38 growth growth NN 36297 1645 39 and and CC 36297 1645 40 decay decay NN 36297 1645 41 of of IN 36297 1645 42 the the DT 36297 1645 43 various various JJ 36297 1645 44 color color NN 36297 1645 45 - - HYPH 36297 1645 46 sensations sensation NNS 36297 1645 47 ( ( -LRB- 36297 1645 48 the the DT 36297 1645 49 white white NNP 36297 1645 50 stimulus stimulus NN 36297 1645 51 includes include VBZ 36297 1645 52 all all PDT 36297 1645 53 the the DT 36297 1645 54 spectral spectral JJ 36297 1645 55 hues hue NNS 36297 1645 56 of of IN 36297 1645 57 the the DT 36297 1645 58 illuminant illuminant NN 36297 1645 59 ) ) -RRB- 36297 1645 60 is be VBZ 36297 1645 61 at at IN 36297 1645 62 least least JJS 36297 1645 63 partially partially RB 36297 1645 64 , , , 36297 1645 65 if if IN 36297 1645 66 not not RB 36297 1645 67 wholly wholly RB 36297 1645 68 , , , 36297 1645 69 responsible responsible JJ 36297 1645 70 . . . 36297 1646 1 [ [ -LRB- 36297 1646 2 Illustration illustration NN 36297 1646 3 : : : 36297 1646 4 Fig Fig NNP 36297 1646 5 . . . 36297 1647 1 67.--By 67.--by LS 36297 1647 2 rotating rotate VBG 36297 1647 3 this this DT 36297 1647 4 Mason Mason NNP 36297 1647 5 ( ( -LRB- 36297 1647 6 black black JJ 36297 1647 7 and and CC 36297 1647 8 white white JJ 36297 1647 9 ) ) -RRB- 36297 1647 10 disk disk NN 36297 1647 11 color color NN 36297 1647 12 - - HYPH 36297 1647 13 sensations sensation NNS 36297 1647 14 are be VBP 36297 1647 15 produced produce VBN 36297 1647 16 . . . 36297 1647 17 ] ] -RRB- 36297 1648 1 An an DT 36297 1648 2 interesting interesting JJ 36297 1648 3 effect effect NN 36297 1648 4 , , , 36297 1648 5 perhaps perhaps RB 36297 1648 6 due due JJ 36297 1648 7 wholly wholly RB 36297 1648 8 or or CC 36297 1648 9 in in IN 36297 1648 10 part part NN 36297 1648 11 to to IN 36297 1648 12 the the DT 36297 1648 13 differences difference NNS 36297 1648 14 in in IN 36297 1648 15 the the DT 36297 1648 16 rates rate NNS 36297 1648 17 of of IN 36297 1648 18 growth growth NN 36297 1648 19 and and CC 36297 1648 20 decay decay NN 36297 1648 21 of of IN 36297 1648 22 color color NN 36297 1648 23 - - HYPH 36297 1648 24 sensations sensation NNS 36297 1648 25 , , , 36297 1648 26 may may MD 36297 1648 27 be be VB 36297 1648 28 observed observe VBN 36297 1648 29 when when WRB 36297 1648 30 a a DT 36297 1648 31 colored colored JJ 36297 1648 32 pattern pattern NN 36297 1648 33 is be VBZ 36297 1648 34 moved move VBN 36297 1648 35 under under IN 36297 1648 36 a a DT 36297 1648 37 low low JJ 36297 1648 38 intensity intensity NN 36297 1648 39 of of IN 36297 1648 40 illumination illumination NN 36297 1648 41 , , , 36297 1648 42 the the DT 36297 1648 43 eyes eye NNS 36297 1648 44 remaining remain VBG 36297 1648 45 focused focus VBN 36297 1648 46 upon upon IN 36297 1648 47 a a DT 36297 1648 48 point point NN 36297 1648 49 in in IN 36297 1648 50 space space NN 36297 1648 51 at at IN 36297 1648 52 about about IN 36297 1648 53 the the DT 36297 1648 54 same same JJ 36297 1648 55 distance distance NN 36297 1648 56 as as IN 36297 1648 57 the the DT 36297 1648 58 object object NN 36297 1648 59 . . . 36297 1649 1 A a DT 36297 1649 2 square square NN 36297 1649 3 of of IN 36297 1649 4 red red JJ 36297 1649 5 paper paper NN 36297 1649 6 pasted paste VBN 36297 1649 7 in in IN 36297 1649 8 the the DT 36297 1649 9 center center NN 36297 1649 10 of of IN 36297 1649 11 a a DT 36297 1649 12 larger large JJR 36297 1649 13 piece piece NN 36297 1649 14 of of IN 36297 1649 15 blue blue JJ 36297 1649 16 - - HYPH 36297 1649 17 green green JJ 36297 1649 18 paper paper NN 36297 1649 19 is be VBZ 36297 1649 20 a a DT 36297 1649 21 satisfactory satisfactory JJ 36297 1649 22 object object NN 36297 1649 23 . . . 36297 1650 1 On on IN 36297 1650 2 moving move VBG 36297 1650 3 this this DT 36297 1650 4 object object NN 36297 1650 5 gently gently RB 36297 1650 6 , , , 36297 1650 7 keeping keep VBG 36297 1650 8 the the DT 36297 1650 9 point point NN 36297 1650 10 of of IN 36297 1650 11 sight sight NN 36297 1650 12 fixed fix VBN 36297 1650 13 in in IN 36297 1650 14 its -PRON- PRP$ 36297 1650 15 plane plane NN 36297 1650 16 of of IN 36297 1650 17 movement movement NN 36297 1650 18 , , , 36297 1650 19 the the DT 36297 1650 20 central central JJ 36297 1650 21 red red NNP 36297 1650 22 square square NNP 36297 1650 23 will will MD 36297 1650 24 appear appear VB 36297 1650 25 to to TO 36297 1650 26 shake shake VB 36297 1650 27 like like IN 36297 1650 28 jelly jelly NNP 36297 1650 29 and and CC 36297 1650 30 a a DT 36297 1650 31 decided decide VBN 36297 1650 32 trail trail NN 36297 1650 33 of of IN 36297 1650 34 color color NN 36297 1650 35 will will MD 36297 1650 36 appear appear VB 36297 1650 37 to to TO 36297 1650 38 cling cling VB 36297 1650 39 to to IN 36297 1650 40 the the DT 36297 1650 41 lagging lagging JJ 36297 1650 42 edge edge NN 36297 1650 43 of of IN 36297 1650 44 the the DT 36297 1650 45 central central JJ 36297 1650 46 square square NN 36297 1650 47 . . . 36297 1651 1 Perhaps perhaps RB 36297 1651 2 chromatic chromatic JJ 36297 1651 3 aberration aberration NN 36297 1651 4 plays play VBZ 36297 1651 5 some some DT 36297 1651 6 part part NN 36297 1651 7 in in IN 36297 1651 8 making make VBG 36297 1651 9 this this DT 36297 1651 10 effect effect NN 36297 1651 11 so so RB 36297 1651 12 conspicuous conspicuous JJ 36297 1651 13 . . . 36297 1652 1 A a DT 36297 1652 2 similar similar JJ 36297 1652 3 case case NN 36297 1652 4 will will MD 36297 1652 5 be be VB 36297 1652 6 noted note VBN 36297 1652 7 in in IN 36297 1652 8 a a DT 36297 1652 9 photographic photographic JJ 36297 1652 10 dark dark JJ 36297 1652 11 - - HYPH 36297 1652 12 room room NN 36297 1652 13 illuminated illuminate VBN 36297 1652 14 by by IN 36297 1652 15 red red JJ 36297 1652 16 light light NN 36297 1652 17 upon upon IN 36297 1652 18 observing observe VBG 36297 1652 19 the the DT 36297 1652 20 self self NN 36297 1652 21 - - HYPH 36297 1652 22 luminous luminous JJ 36297 1652 23 dial dial NN 36297 1652 24 of of IN 36297 1652 25 a a DT 36297 1652 26 watch watch NN 36297 1652 27 or or CC 36297 1652 28 clock clock NN 36297 1652 29 . . . 36297 1653 1 When when WRB 36297 1653 2 the the DT 36297 1653 3 latter latter NN 36297 1653 4 is be VBZ 36297 1653 5 moved move VBN 36297 1653 6 in in IN 36297 1653 7 the the DT 36297 1653 8 plane plane NN 36297 1653 9 of of IN 36297 1653 10 the the DT 36297 1653 11 dial dial NN 36297 1653 12 , , , 36297 1653 13 the the DT 36297 1653 14 greenish greenish JJ 36297 1653 15 luminous luminous JJ 36297 1653 16 figures figure NNS 36297 1653 17 appear appear VBP 36297 1653 18 separated separate VBN 36297 1653 19 from from IN 36297 1653 20 the the DT 36297 1653 21 red red JJ 36297 1653 22 dial dial NN 36297 1653 23 and and CC 36297 1653 24 seem seem VBP 36297 1653 25 to to TO 36297 1653 26 lag lag VB 36297 1653 27 behind behind RB 36297 1653 28 during during IN 36297 1653 29 the the DT 36297 1653 30 movement movement NN 36297 1653 31 . . . 36297 1654 1 For for IN 36297 1654 2 such such JJ 36297 1654 3 demonstrations demonstration NNS 36297 1654 4 it -PRON- PRP 36297 1654 5 is be VBZ 36297 1654 6 well well JJ 36297 1654 7 to to TO 36297 1654 8 experiment experiment VB 36297 1654 9 somewhat somewhat RB 36297 1654 10 by by IN 36297 1654 11 varying vary VBG 36297 1654 12 the the DT 36297 1654 13 intensity intensity NN 36297 1654 14 of of IN 36297 1654 15 the the DT 36297 1654 16 illumination illumination NN 36297 1654 17 and and CC 36297 1654 18 the the DT 36297 1654 19 speed speed NN 36297 1654 20 of of IN 36297 1654 21 movement movement NN 36297 1654 22 . . . 36297 1655 1 Relatively relatively RB 36297 1655 2 low low JJ 36297 1655 3 values value NNS 36297 1655 4 of of IN 36297 1655 5 each each DT 36297 1655 6 appear appear VBP 36297 1655 7 to to TO 36297 1655 8 be be VB 36297 1655 9 best good JJS 36297 1655 10 . . . 36297 1656 1 Although although IN 36297 1656 2 the the DT 36297 1656 3 various various JJ 36297 1656 4 color color NN 36297 1656 5 - - HYPH 36297 1656 6 sensations sensation NNS 36297 1656 7 grow grow VBP 36297 1656 8 and and CC 36297 1656 9 decay decay VBP 36297 1656 10 at at IN 36297 1656 11 different different JJ 36297 1656 12 rates rate NNS 36297 1656 13 , , , 36297 1656 14 the the DT 36297 1656 15 latter latter JJ 36297 1656 16 depend depend NN 36297 1656 17 upon upon IN 36297 1656 18 conditions condition NNS 36297 1656 19 . . . 36297 1657 1 It -PRON- PRP 36297 1657 2 appears appear VBZ 36297 1657 3 that that IN 36297 1657 4 blue blue JJ 36297 1657 5 - - HYPH 36297 1657 6 sensation sensation NN 36297 1657 7 rises rise VBZ 36297 1657 8 very very RB 36297 1657 9 rapidly rapidly RB 36297 1657 10 and and CC 36297 1657 11 greatly greatly RB 36297 1657 12 overshoots overshoot VBZ 36297 1657 13 its -PRON- PRP$ 36297 1657 14 final final JJ 36297 1657 15 steady steady JJ 36297 1657 16 value value NN 36297 1657 17 for for IN 36297 1657 18 a a DT 36297 1657 19 given give VBN 36297 1657 20 stimulus stimulus NN 36297 1657 21 . . . 36297 1658 1 Red red JJ 36297 1658 2 ranks rank VBZ 36297 1658 3 next next RB 36297 1658 4 and and CC 36297 1658 5 green green JJ 36297 1658 6 third third RB 36297 1658 7 in in IN 36297 1658 8 this this DT 36297 1658 9 respect respect NN 36297 1658 10 . . . 36297 1659 1 The the DT 36297 1659 2 overshooting overshoot VBG 36297 1659 3 appears appear VBZ 36297 1659 4 to to TO 36297 1659 5 be be VB 36297 1659 6 greater great JJR 36297 1659 7 for for IN 36297 1659 8 the the DT 36297 1659 9 greater great JJR 36297 1659 10 intensity intensity NN 36297 1659 11 of of IN 36297 1659 12 the the DT 36297 1659 13 stimulus stimulus NN 36297 1659 14 . . . 36297 1660 1 The the DT 36297 1660 2 time time NN 36297 1660 3 required require VBN 36297 1660 4 for for IN 36297 1660 5 the the DT 36297 1660 6 sensation sensation NN 36297 1660 7 to to TO 36297 1660 8 reach reach VB 36297 1660 9 a a DT 36297 1660 10 steady steady JJ 36297 1660 11 value value NN 36297 1660 12 depends depend VBZ 36297 1660 13 both both DT 36297 1660 14 upon upon IN 36297 1660 15 the the DT 36297 1660 16 spectral spectral JJ 36297 1660 17 character character NN 36297 1660 18 and and CC 36297 1660 19 the the DT 36297 1660 20 brightness brightness NN 36297 1660 21 of of IN 36297 1660 22 the the DT 36297 1660 23 color color NN 36297 1660 24 but but CC 36297 1660 25 is be VBZ 36297 1660 26 usually usually RB 36297 1660 27 less less JJR 36297 1660 28 than than IN 36297 1660 29 a a DT 36297 1660 30 second second NN 36297 1660 31 . . . 36297 1661 1 _ _ NNP 36297 1661 2 Chromatic chromatic JJ 36297 1661 3 Aberration._--It aberration._--it NN 36297 1661 4 is be VBZ 36297 1661 5 well well RB 36297 1661 6 known know VBN 36297 1661 7 that that IN 36297 1661 8 the the DT 36297 1661 9 eye eye NN 36297 1661 10 focuses focus VBZ 36297 1661 11 different different JJ 36297 1661 12 spectral spectral JJ 36297 1661 13 colors color NNS 36297 1661 14 at at IN 36297 1661 15 different different JJ 36297 1661 16 points point NNS 36297 1661 17 . . . 36297 1662 1 This this DT 36297 1662 2 is be VBZ 36297 1662 3 true true JJ 36297 1662 4 of of IN 36297 1662 5 any any DT 36297 1662 6 simple simple JJ 36297 1662 7 lens lens NN 36297 1662 8 and and CC 36297 1662 9 the the DT 36297 1662 10 defect defect NN 36297 1662 11 is be VBZ 36297 1662 12 overcome overcome VBN 36297 1662 13 in in IN 36297 1662 14 the the DT 36297 1662 15 manufacture manufacture NN 36297 1662 16 of of IN 36297 1662 17 optical optical JJ 36297 1662 18 instruments instrument NNS 36297 1662 19 by by IN 36297 1662 20 combining combine VBG 36297 1662 21 two two CD 36297 1662 22 lenses lense NNS 36297 1662 23 consisting consist VBG 36297 1662 24 respectively respectively RB 36297 1662 25 of of IN 36297 1662 26 glasses glass NNS 36297 1662 27 differing differ VBG 36297 1662 28 considerably considerably RB 36297 1662 29 in in IN 36297 1662 30 refractive refractive JJ 36297 1662 31 index index NN 36297 1662 32 . . . 36297 1663 1 If if IN 36297 1663 2 a a DT 36297 1663 3 white white JJ 36297 1663 4 object object NN 36297 1663 5 is be VBZ 36297 1663 6 viewed view VBN 36297 1663 7 by by IN 36297 1663 8 the the DT 36297 1663 9 eye eye NN 36297 1663 10 , , , 36297 1663 11 it -PRON- PRP 36297 1663 12 should should MD 36297 1663 13 appear appear VB 36297 1663 14 with with IN 36297 1663 15 a a DT 36297 1663 16 purplish purplish JJ 36297 1663 17 fringe fringe NN 36297 1663 18 ; ; : 36297 1663 19 however however RB 36297 1663 20 , , , 36297 1663 21 the the DT 36297 1663 22 effect effect NN 36297 1663 23 is be VBZ 36297 1663 24 observed observe VBN 36297 1663 25 more more RBR 36297 1663 26 readily readily RB 36297 1663 27 by by IN 36297 1663 28 viewing view VBG 36297 1663 29 a a DT 36297 1663 30 light light JJ 36297 1663 31 - - HYPH 36297 1663 32 source source NN 36297 1663 33 through through IN 36297 1663 34 a a DT 36297 1663 35 purple purple JJ 36297 1663 36 filter filter NN 36297 1663 37 which which WDT 36297 1663 38 transmits transmit VBZ 36297 1663 39 only only JJ 36297 1663 40 violet violet NN 36297 1663 41 and and CC 36297 1663 42 red red JJ 36297 1663 43 light light NN 36297 1663 44 . . . 36297 1664 1 The the DT 36297 1664 2 light light JJ 36297 1664 3 - - HYPH 36297 1664 4 source source NN 36297 1664 5 will will MD 36297 1664 6 have have VB 36297 1664 7 a a DT 36297 1664 8 red red JJ 36297 1664 9 or or CC 36297 1664 10 a a DT 36297 1664 11 violet violet NN 36297 1664 12 fringe fringe NN 36297 1664 13 , , , 36297 1664 14 depending depend VBG 36297 1664 15 upon upon IN 36297 1664 16 the the DT 36297 1664 17 accommodation accommodation NN 36297 1664 18 or or CC 36297 1664 19 focus focus NN 36297 1664 20 of of IN 36297 1664 21 the the DT 36297 1664 22 eye eye NN 36297 1664 23 . . . 36297 1665 1 This this DT 36297 1665 2 effect effect NN 36297 1665 3 is be VBZ 36297 1665 4 perhaps perhaps RB 36297 1665 5 best well RBS 36297 1665 6 witnessed witness VBN 36297 1665 7 on on IN 36297 1665 8 viewing view VBG 36297 1665 9 a a DT 36297 1665 10 line line NN 36297 1665 11 spectrum spectrum NN 36297 1665 12 such such JJ 36297 1665 13 as as IN 36297 1665 14 that that DT 36297 1665 15 of of IN 36297 1665 16 the the DT 36297 1665 17 mercury mercury NNP 36297 1665 18 arc arc NNP 36297 1665 19 , , , 36297 1665 20 focused focus VBD 36297 1665 21 upon upon IN 36297 1665 22 a a DT 36297 1665 23 ground ground NN 36297 1665 24 glass glass NN 36297 1665 25 . . . 36297 1666 1 The the DT 36297 1666 2 violet violet NN 36297 1666 3 and and CC 36297 1666 4 blue blue JJ 36297 1666 5 lines line NNS 36297 1666 6 are be VBP 36297 1666 7 not not RB 36297 1666 8 seen see VBN 36297 1666 9 in in IN 36297 1666 10 good good JJ 36297 1666 11 focus focus NN 36297 1666 12 when when WRB 36297 1666 13 the the DT 36297 1666 14 eyes eye NNS 36297 1666 15 are be VBP 36297 1666 16 focused focus VBN 36297 1666 17 upon upon IN 36297 1666 18 the the DT 36297 1666 19 green green JJ 36297 1666 20 and and CC 36297 1666 21 yellow yellow JJ 36297 1666 22 lines line NNS 36297 1666 23 . . . 36297 1667 1 Furthermore furthermore RB 36297 1667 2 , , , 36297 1667 3 the the DT 36297 1667 4 former former JJ 36297 1667 5 can can MD 36297 1667 6 be be VB 36297 1667 7 seen see VBN 36297 1667 8 in in IN 36297 1667 9 excellent excellent JJ 36297 1667 10 focus focus NN 36297 1667 11 at at IN 36297 1667 12 a a DT 36297 1667 13 distance distance NN 36297 1667 14 too too RB 36297 1667 15 short short JJ 36297 1667 16 for for IN 36297 1667 17 accommodating accommodate VBG 36297 1667 18 the the DT 36297 1667 19 eyes eye NNS 36297 1667 20 to to IN 36297 1667 21 the the DT 36297 1667 22 green green NN 36297 1667 23 and and CC 36297 1667 24 the the DT 36297 1667 25 yellow yellow JJ 36297 1667 26 lines line NNS 36297 1667 27 . . . 36297 1668 1 This this DT 36297 1668 2 experiment experiment NN 36297 1668 3 shows show VBZ 36297 1668 4 that that IN 36297 1668 5 the the DT 36297 1668 6 focal focal JJ 36297 1668 7 length length NN 36297 1668 8 of of IN 36297 1668 9 the the DT 36297 1668 10 optical optical JJ 36297 1668 11 system system NN 36297 1668 12 of of IN 36297 1668 13 the the DT 36297 1668 14 eye eye NN 36297 1668 15 is be VBZ 36297 1668 16 considerably considerably RB 36297 1668 17 shorter short JJR 36297 1668 18 for for IN 36297 1668 19 the the DT 36297 1668 20 spectral spectral JJ 36297 1668 21 hues hue NNS 36297 1668 22 of of IN 36297 1668 23 shorter short JJR 36297 1668 24 wave wave NN 36297 1668 25 - - HYPH 36297 1668 26 length length NN 36297 1668 27 ( ( -LRB- 36297 1668 28 violet violet NN 36297 1668 29 , , , 36297 1668 30 blue blue NNP 36297 1668 31 ) ) -RRB- 36297 1668 32 than than IN 36297 1668 33 for for IN 36297 1668 34 those those DT 36297 1668 35 of of IN 36297 1668 36 longer long JJR 36297 1668 37 wave wave NN 36297 1668 38 - - HYPH 36297 1668 39 length length NN 36297 1668 40 ( ( -LRB- 36297 1668 41 such such JJ 36297 1668 42 as as IN 36297 1668 43 yellow yellow JJ 36297 1668 44 ) ) -RRB- 36297 1668 45 . . . 36297 1669 1 Narrow narrow JJ 36297 1669 2 slits slit NNS 36297 1669 3 covered cover VBN 36297 1669 4 with with IN 36297 1669 5 diffusing diffusing NN 36297 1669 6 glass glass NN 36297 1669 7 and and CC 36297 1669 8 illuminated illuminate VBN 36297 1669 9 respectively respectively RB 36297 1669 10 by by IN 36297 1669 11 fairly fairly RB 36297 1669 12 pure pure JJ 36297 1669 13 blue blue JJ 36297 1669 14 , , , 36297 1669 15 green green JJ 36297 1669 16 , , , 36297 1669 17 yellow yellow JJ 36297 1669 18 , , , 36297 1669 19 and and CC 36297 1669 20 red red JJ 36297 1669 21 lights light NNS 36297 1669 22 may may MD 36297 1669 23 be be VB 36297 1669 24 substituted substitute VBN 36297 1669 25 . . . 36297 1670 1 The the DT 36297 1670 2 effect effect NN 36297 1670 3 may may MD 36297 1670 4 be be VB 36297 1670 5 demonstrated demonstrate VBN 36297 1670 6 by by IN 36297 1670 7 trying try VBG 36297 1670 8 to to TO 36297 1670 9 focus focus VB 36297 1670 10 fine fine JJ 36297 1670 11 detail detail NN 36297 1670 12 such such JJ 36297 1670 13 as as IN 36297 1670 14 print print NN 36297 1670 15 when when WRB 36297 1670 16 two two CD 36297 1670 17 adjacent adjacent JJ 36297 1670 18 areas area NNS 36297 1670 19 are be VBP 36297 1670 20 illuminated illuminate VBN 36297 1670 21 by by IN 36297 1670 22 blue blue JJ 36297 1670 23 and and CC 36297 1670 24 red red JJ 36297 1670 25 lights light NNS 36297 1670 26 respectively respectively RB 36297 1670 27 . . . 36297 1671 1 It -PRON- PRP 36297 1671 2 is be VBZ 36297 1671 3 also also RB 36297 1671 4 observed observe VBN 36297 1671 5 when when WRB 36297 1671 6 fine fine JJ 36297 1671 7 detail detail NN 36297 1671 8 such such JJ 36297 1671 9 as as IN 36297 1671 10 black black JJ 36297 1671 11 lines line NNS 36297 1671 12 are be VBP 36297 1671 13 held hold VBN 36297 1671 14 close close RB 36297 1671 15 to to IN 36297 1671 16 the the DT 36297 1671 17 eye eye NN 36297 1671 18 for for IN 36297 1671 19 colored colored JJ 36297 1671 20 fringes fringe NNS 36297 1671 21 are be VBP 36297 1671 22 seen see VBN 36297 1671 23 . . . 36297 1672 1 This this DT 36297 1672 2 optical optical JJ 36297 1672 3 defect defect NN 36297 1672 4 is be VBZ 36297 1672 5 responsible responsible JJ 36297 1672 6 for for IN 36297 1672 7 certain certain JJ 36297 1672 8 visual visual JJ 36297 1672 9 illusions illusion NNS 36297 1672 10 . . . 36297 1673 1 An an DT 36297 1673 2 excellent excellent JJ 36297 1673 3 demonstration demonstration NN 36297 1673 4 of of IN 36297 1673 5 chromatic chromatic JJ 36297 1673 6 aberration aberration NN 36297 1673 7 in in IN 36297 1673 8 the the DT 36297 1673 9 eye eye NN 36297 1673 10 is be VBZ 36297 1673 11 found find VBN 36297 1673 12 by by IN 36297 1673 13 viewing view VBG 36297 1673 14 fine fine JJ 36297 1673 15 detail detail NN 36297 1673 16 through through IN 36297 1673 17 a a DT 36297 1673 18 purple purple JJ 36297 1673 19 filter filter NN 36297 1673 20 . . . 36297 1674 1 Now now RB 36297 1674 2 if if IN 36297 1674 3 a a DT 36297 1674 4 red red JJ 36297 1674 5 filter filter NN 36297 1674 6 be be VB 36297 1674 7 superposed superpose VBN 36297 1674 8 on on IN 36297 1674 9 the the DT 36297 1674 10 purple purple JJ 36297 1674 11 one one NN 36297 1674 12 only only RB 36297 1674 13 the the DT 36297 1674 14 red red JJ 36297 1674 15 light light NN 36297 1674 16 is be VBZ 36297 1674 17 transmitted transmit VBN 36297 1674 18 . . . 36297 1675 1 Notwithstanding notwithstanding IN 36297 1675 2 the the DT 36297 1675 3 decrease decrease NN 36297 1675 4 in in IN 36297 1675 5 illumination illumination NN 36297 1675 6 or or CC 36297 1675 7 rather rather RB 36297 1675 8 of of IN 36297 1675 9 light light NN 36297 1675 10 reaching reach VBG 36297 1675 11 the the DT 36297 1675 12 eye eye NN 36297 1675 13 , , , 36297 1675 14 measurement measurement NN 36297 1675 15 shows show VBZ 36297 1675 16 that that IN 36297 1675 17 finer fine JJR 36297 1675 18 detail detail NN 36297 1675 19 can can MD 36297 1675 20 be be VB 36297 1675 21 discriminated discriminate VBN 36297 1675 22 than than IN 36297 1675 23 in in IN 36297 1675 24 the the DT 36297 1675 25 first first JJ 36297 1675 26 case case NN 36297 1675 27 . . . 36297 1676 1 A a DT 36297 1676 2 similar similar JJ 36297 1676 3 result result NN 36297 1676 4 is be VBZ 36297 1676 5 found find VBN 36297 1676 6 on on IN 36297 1676 7 superposing superpose VBG 36297 1676 8 a a DT 36297 1676 9 blue blue JJ 36297 1676 10 filter filter NN 36297 1676 11 upon upon IN 36297 1676 12 the the DT 36297 1676 13 purple purple JJ 36297 1676 14 one one CD 36297 1676 15 . . . 36297 1677 1 _ _ NNP 36297 1677 2 Retiring Retiring NNP 36297 1677 3 and and CC 36297 1677 4 Advancing Advancing NNP 36297 1677 5 Colors._--For colors._--for CD 36297 1677 6 years year NNS 36297 1677 7 the the DT 36297 1677 8 artist artist NN 36297 1677 9 and and CC 36297 1677 10 the the DT 36297 1677 11 decorator decorator NN 36297 1677 12 have have VBP 36297 1677 13 felt feel VBN 36297 1677 14 that that IN 36297 1677 15 certain certain JJ 36297 1677 16 colors color NNS 36297 1677 17 seem seem VBP 36297 1677 18 to to TO 36297 1677 19 advance advance VB 36297 1677 20 nearer near RBR 36297 1677 21 than than IN 36297 1677 22 others other NNS 36297 1677 23 or or CC 36297 1677 24 that that IN 36297 1677 25 the the DT 36297 1677 26 latter latter JJ 36297 1677 27 seem seem VBP 36297 1677 28 to to TO 36297 1677 29 retire retire VB 36297 1677 30 more more JJR 36297 1677 31 than than IN 36297 1677 32 the the DT 36297 1677 33 former former JJ 36297 1677 34 . . . 36297 1678 1 The the DT 36297 1678 2 author[5 author[5 NNP 36297 1678 3 ] ] -RRB- 36297 1678 4 obtained obtain VBN 36297 1678 5 actual actual JJ 36297 1678 6 measurements measurement NNS 36297 1678 7 of of IN 36297 1678 8 this this DT 36297 1678 9 phenomenon phenomenon NN 36297 1678 10 , , , 36297 1678 11 but but CC 36297 1678 12 the the DT 36297 1678 13 evidence evidence NN 36297 1678 14 also also RB 36297 1678 15 indicated indicate VBD 36297 1678 16 that that IN 36297 1678 17 the the DT 36297 1678 18 effects effect NNS 36297 1678 19 were be VBD 36297 1678 20 not not RB 36297 1678 21 the the DT 36297 1678 22 same same JJ 36297 1678 23 for for IN 36297 1678 24 all all DT 36297 1678 25 persons person NNS 36297 1678 26 . . . 36297 1679 1 The the DT 36297 1679 2 phenomenon phenomenon NN 36297 1679 3 is be VBZ 36297 1679 4 very very RB 36297 1679 5 noticeable noticeable JJ 36297 1679 6 in in IN 36297 1679 7 the the DT 36297 1679 8 case case NN 36297 1679 9 of of IN 36297 1679 10 the the DT 36297 1679 11 image image NN 36297 1679 12 of of IN 36297 1679 13 a a DT 36297 1679 14 colored colored JJ 36297 1679 15 lantern lantern NN 36297 1679 16 - - HYPH 36297 1679 17 slide slide NN 36297 1679 18 projected project VBN 36297 1679 19 upon upon IN 36297 1679 20 a a DT 36297 1679 21 screen screen NN 36297 1679 22 and and CC 36297 1679 23 is be VBZ 36297 1679 24 readily readily RB 36297 1679 25 observed observe VBN 36297 1679 26 when when WRB 36297 1679 27 the the DT 36297 1679 28 image image NN 36297 1679 29 consists consist VBZ 36297 1679 30 of of IN 36297 1679 31 letters letter NNS 36297 1679 32 of of IN 36297 1679 33 various various JJ 36297 1679 34 colors color NNS 36297 1679 35 . . . 36297 1680 1 In in IN 36297 1680 2 the the DT 36297 1680 3 case case NN 36297 1680 4 of of IN 36297 1680 5 red red JJ 36297 1680 6 and and CC 36297 1680 7 green green JJ 36297 1680 8 letters letter NNS 36297 1680 9 , , , 36297 1680 10 for for IN 36297 1680 11 example example NN 36297 1680 12 , , , 36297 1680 13 the the DT 36297 1680 14 former former JJ 36297 1680 15 appear appear NN 36297 1680 16 ( ( -LRB- 36297 1680 17 to to IN 36297 1680 18 most most JJS 36297 1680 19 persons person NNS 36297 1680 20 ) ) -RRB- 36297 1680 21 to to TO 36297 1680 22 be be VB 36297 1680 23 considerably considerably RB 36297 1680 24 nearer near JJR 36297 1680 25 the the DT 36297 1680 26 observer observer NN 36297 1680 27 than than IN 36297 1680 28 the the DT 36297 1680 29 green green JJ 36297 1680 30 letters letter NNS 36297 1680 31 . . . 36297 1681 1 It -PRON- PRP 36297 1681 2 has have VBZ 36297 1681 3 appeared appear VBN 36297 1681 4 to to IN 36297 1681 5 the the DT 36297 1681 6 writer writer NN 36297 1681 7 that that WDT 36297 1681 8 the the DT 36297 1681 9 illusion illusion NN 36297 1681 10 is be VBZ 36297 1681 11 apparent apparent JJ 36297 1681 12 even even RB 36297 1681 13 for for IN 36297 1681 14 white white JJ 36297 1681 15 letters letter NNS 36297 1681 16 upon upon IN 36297 1681 17 a a DT 36297 1681 18 dark dark JJ 36297 1681 19 background background NN 36297 1681 20 . . . 36297 1682 1 In in IN 36297 1682 2 general general JJ 36297 1682 3 , , , 36297 1682 4 the the DT 36297 1682 5 colors color NNS 36297 1682 6 whose whose WP$ 36297 1682 7 dominant dominant JJ 36297 1682 8 hues hue NNS 36297 1682 9 are be VBP 36297 1682 10 of of IN 36297 1682 11 the the DT 36297 1682 12 shorter short JJR 36297 1682 13 wave wave NN 36297 1682 14 - - HYPH 36297 1682 15 lengths length NNS 36297 1682 16 ( ( -LRB- 36297 1682 17 violet violet NN 36297 1682 18 , , , 36297 1682 19 blue blue JJ 36297 1682 20 , , , 36297 1682 21 blue blue JJ 36297 1682 22 - - HYPH 36297 1682 23 green green JJ 36297 1682 24 , , , 36297 1682 25 green green JJ 36297 1682 26 ) ) -RRB- 36297 1682 27 are be VBP 36297 1682 28 retiring retire VBG 36297 1682 29 and and CC 36297 1682 30 those those DT 36297 1682 31 whose whose WP$ 36297 1682 32 dominant dominant JJ 36297 1682 33 hues hue NNS 36297 1682 34 are be VBP 36297 1682 35 of of IN 36297 1682 36 the the DT 36297 1682 37 longer long JJR 36297 1682 38 wave wave NN 36297 1682 39 - - HYPH 36297 1682 40 lengths length NNS 36297 1682 41 ( ( -LRB- 36297 1682 42 yellow yellow NNP 36297 1682 43 , , , 36297 1682 44 orange orange NNP 36297 1682 45 , , , 36297 1682 46 red red JJ 36297 1682 47 ) ) -RRB- 36297 1682 48 are be VBP 36297 1682 49 advancing advance VBG 36297 1682 50 . . . 36297 1683 1 [ [ -LRB- 36297 1683 2 Illustration illustration NN 36297 1683 3 : : : 36297 1683 4 Fig Fig NNP 36297 1683 5 . . . 36297 1684 1 68.--For 68.--for CD 36297 1684 2 demonstrating demonstrating NN 36297 1684 3 retiring retire VBG 36297 1684 4 and and CC 36297 1684 5 advancing advance VBG 36297 1684 6 colors color NNS 36297 1684 7 . . . 36297 1684 8 ] ] -RRB- 36297 1685 1 In in IN 36297 1685 2 order order NN 36297 1685 3 to to TO 36297 1685 4 obtain obtain VB 36297 1685 5 experimental experimental JJ 36297 1685 6 measurements measurement NNS 36297 1685 7 two two CD 36297 1685 8 light light JJ 36297 1685 9 - - HYPH 36297 1685 10 tight tight JJ 36297 1685 11 boxes box NNS 36297 1685 12 , , , 36297 1685 13 each each DT 36297 1685 14 containing contain VBG 36297 1685 15 a a DT 36297 1685 16 light light JJ 36297 1685 17 - - HYPH 36297 1685 18 source source NN 36297 1685 19 , , , 36297 1685 20 were be VBD 36297 1685 21 arranged arrange VBN 36297 1685 22 to to TO 36297 1685 23 run run VB 36297 1685 24 independently independently RB 36297 1685 25 upon upon IN 36297 1685 26 tracks track NNS 36297 1685 27 . . . 36297 1686 1 Over over IN 36297 1686 2 the the DT 36297 1686 3 front front JJ 36297 1686 4 end end NN 36297 1686 5 of of IN 36297 1686 6 each each DT 36297 1686 7 a a DT 36297 1686 8 diaphragm diaphragm NN 36297 1686 9 was be VBD 36297 1686 10 placed place VBN 36297 1686 11 so so IN 36297 1686 12 that that IN 36297 1686 13 the the DT 36297 1686 14 observer observer NN 36297 1686 15 saw see VBD 36297 1686 16 two two CD 36297 1686 17 characters character NNS 36297 1686 18 as as IN 36297 1686 19 in in IN 36297 1686 20 Fig Fig NNP 36297 1686 21 . . . 36297 1687 1 68 68 CD 36297 1687 2 . . . 36297 1688 1 A a DT 36297 1688 2 saturated saturate VBN 36297 1688 3 red red JJ 36297 1688 4 filter filter NN 36297 1688 5 was be VBD 36297 1688 6 placed place VBN 36297 1688 7 over over IN 36297 1688 8 one one CD 36297 1688 9 and and CC 36297 1688 10 a a DT 36297 1688 11 saturated saturate VBN 36297 1688 12 blue blue JJ 36297 1688 13 filter filter NN 36297 1688 14 over over IN 36297 1688 15 the the DT 36297 1688 16 other other JJ 36297 1688 17 . . . 36297 1689 1 In in IN 36297 1689 2 a a DT 36297 1689 3 dark dark JJ 36297 1689 4 room room NN 36297 1689 5 the the DT 36297 1689 6 observer observer NN 36297 1689 7 saw see VBD 36297 1689 8 a a DT 36297 1689 9 blue blue JJ 36297 1689 10 _ _ NNP 36297 1689 11 E E NNP 36297 1689 12 _ _ NNP 36297 1689 13 and and CC 36297 1689 14 a a DT 36297 1689 15 red red JJ 36297 1689 16 _ _ NNP 36297 1689 17 H H NNP 36297 1689 18 _ _ NNP 36297 1689 19 standing stand VBG 36297 1689 20 out out RP 36297 1689 21 in in IN 36297 1689 22 the the DT 36297 1689 23 darkness darkness NN 36297 1689 24 . . . 36297 1690 1 One one CD 36297 1690 2 of of IN 36297 1690 3 these these DT 36297 1690 4 boxes box NNS 36297 1690 5 was be VBD 36297 1690 6 fastened fasten VBN 36297 1690 7 so so IN 36297 1690 8 as as IN 36297 1690 9 to to TO 36297 1690 10 be be VB 36297 1690 11 immovable immovable JJ 36297 1690 12 and and CC 36297 1690 13 the the DT 36297 1690 14 observer observer NN 36297 1690 15 moved move VBD 36297 1690 16 the the DT 36297 1690 17 other other JJ 36297 1690 18 to to IN 36297 1690 19 and and CC 36297 1690 20 fro fro JJ 36297 1690 21 by by IN 36297 1690 22 means mean NNS 36297 1690 23 of of IN 36297 1690 24 a a DT 36297 1690 25 cord cord NN 36297 1690 26 over over IN 36297 1690 27 pulleys pulley NNS 36297 1690 28 until until IN 36297 1690 29 the the DT 36297 1690 30 two two CD 36297 1690 31 characters character NNS 36297 1690 32 appeared appear VBD 36297 1690 33 equi equi JJ 36297 1690 34 - - HYPH 36297 1690 35 distant distant JJ 36297 1690 36 from from IN 36297 1690 37 him -PRON- PRP 36297 1690 38 . . . 36297 1691 1 This this DT 36297 1691 2 was be VBD 36297 1691 3 done do VBN 36297 1691 4 for for IN 36297 1691 5 a a DT 36297 1691 6 series series NN 36297 1691 7 of of IN 36297 1691 8 distances distance NNS 36297 1691 9 of of IN 36297 1691 10 the the DT 36297 1691 11 stationary stationary JJ 36297 1691 12 box box NN 36297 1691 13 from from IN 36297 1691 14 the the DT 36297 1691 15 observer observer NN 36297 1691 16 's 's POS 36297 1691 17 eye eye NN 36297 1691 18 . . . 36297 1692 1 Nearly nearly RB 36297 1692 2 all all PDT 36297 1692 3 the the DT 36297 1692 4 observers observer NNS 36297 1692 5 ( ( -LRB- 36297 1692 6 without without IN 36297 1692 7 being be VBG 36297 1692 8 acquainted acquaint VBN 36297 1692 9 with with IN 36297 1692 10 the the DT 36297 1692 11 positions position NNS 36297 1692 12 ) ) -RRB- 36297 1692 13 were be VBD 36297 1692 14 obliged oblige VBN 36297 1692 15 to to TO 36297 1692 16 set set VB 36297 1692 17 the the DT 36297 1692 18 red red JJ 36297 1692 19 _ _ NNP 36297 1692 20 H H NNP 36297 1692 21 _ _ IN 36297 1692 22 further further RB 36297 1692 23 behind behind IN 36297 1692 24 the the DT 36297 1692 25 blue blue JJ 36297 1692 26 _ _ NNP 36297 1692 27 E E NNP 36297 1692 28 _ _ NNP 36297 1692 29 in in IN 36297 1692 30 order order NN 36297 1692 31 that that IN 36297 1692 32 both both DT 36297 1692 33 appeared appear VBD 36297 1692 34 at at IN 36297 1692 35 the the DT 36297 1692 36 same same JJ 36297 1692 37 distance distance NN 36297 1692 38 . . . 36297 1693 1 This this DT 36297 1693 2 added add VBN 36297 1693 3 distance distance NN 36297 1693 4 for for IN 36297 1693 5 the the DT 36297 1693 6 red red NNP 36297 1693 7 _ _ NNP 36297 1693 8 H H NNP 36297 1693 9 _ _ NNP 36297 1693 10 was be VBD 36297 1693 11 as as RB 36297 1693 12 much much JJ 36297 1693 13 as as IN 36297 1693 14 2.4 2.4 CD 36297 1693 15 feet foot NNS 36297 1693 16 when when WRB 36297 1693 17 the the DT 36297 1693 18 blue blue JJ 36297 1693 19 _ _ NNP 36297 1693 20 E E NNP 36297 1693 21 _ _ NNP 36297 1693 22 was be VBD 36297 1693 23 at at IN 36297 1693 24 a a DT 36297 1693 25 distance distance NN 36297 1693 26 of of IN 36297 1693 27 24 24 CD 36297 1693 28 feet foot NNS 36297 1693 29 . . . 36297 1694 1 In in IN 36297 1694 2 other other JJ 36297 1694 3 words word NNS 36297 1694 4 the the DT 36297 1694 5 difference difference NN 36297 1694 6 in in IN 36297 1694 7 the the DT 36297 1694 8 positions position NNS 36297 1694 9 of of IN 36297 1694 10 the the DT 36297 1694 11 two two CD 36297 1694 12 was be VBD 36297 1694 13 as as RB 36297 1694 14 much much JJ 36297 1694 15 as as IN 36297 1694 16 10 10 CD 36297 1694 17 per per NN 36297 1694 18 cent cent NN 36297 1694 19 of of IN 36297 1694 20 the the DT 36297 1694 21 total total JJ 36297 1694 22 distance distance NN 36297 1694 23 in in IN 36297 1694 24 this this DT 36297 1694 25 case case NN 36297 1694 26 . . . 36297 1695 1 Many many JJ 36297 1695 2 other other JJ 36297 1695 3 interesting interesting JJ 36297 1695 4 data datum NNS 36297 1695 5 were be VBD 36297 1695 6 obtained obtain VBN 36297 1695 7 but but CC 36297 1695 8 most most JJS 36297 1695 9 of of IN 36297 1695 10 these these DT 36297 1695 11 are be VBP 36297 1695 12 not not RB 36297 1695 13 particularly particularly RB 36297 1695 14 of of IN 36297 1695 15 interest interest NN 36297 1695 16 here here RB 36297 1695 17 . . . 36297 1696 1 Some some DT 36297 1696 2 of of IN 36297 1696 3 the the DT 36297 1696 4 experiments experiment NNS 36297 1696 5 tended tend VBD 36297 1696 6 to to TO 36297 1696 7 show show VB 36297 1696 8 the the DT 36297 1696 9 effect effect NN 36297 1696 10 of of IN 36297 1696 11 certain certain JJ 36297 1696 12 optical optical JJ 36297 1696 13 defects defect NNS 36297 1696 14 in in IN 36297 1696 15 the the DT 36297 1696 16 eye eye NN 36297 1696 17 and and CC 36297 1696 18 the the DT 36297 1696 19 variations variation NNS 36297 1696 20 and and CC 36297 1696 21 even even RB 36297 1696 22 reversal reversal NN 36297 1696 23 of of IN 36297 1696 24 the the DT 36297 1696 25 effect effect NN 36297 1696 26 for for IN 36297 1696 27 some some DT 36297 1696 28 persons person NNS 36297 1696 29 were be VBD 36297 1696 30 accounted account VBN 36297 1696 31 for for IN 36297 1696 32 by by IN 36297 1696 33 differences difference NNS 36297 1696 34 in in IN 36297 1696 35 the the DT 36297 1696 36 curvatures curvature NNS 36297 1696 37 , , , 36297 1696 38 etc etc FW 36297 1696 39 . . . 36297 1696 40 , , , 36297 1696 41 of of IN 36297 1696 42 certain certain JJ 36297 1696 43 eye eye NN 36297 1696 44 - - HYPH 36297 1696 45 media medium NNS 36297 1696 46 for for IN 36297 1696 47 the the DT 36297 1696 48 observers observer NNS 36297 1696 49 . . . 36297 1697 1 These these DT 36297 1697 2 details detail NNS 36297 1697 3 are be VBP 36297 1697 4 not not RB 36297 1697 5 of of IN 36297 1697 6 interest interest NN 36297 1697 7 here here RB 36297 1697 8 but but CC 36297 1697 9 it -PRON- PRP 36297 1697 10 may may MD 36297 1697 11 be be VB 36297 1697 12 of of IN 36297 1697 13 interest interest NN 36297 1697 14 to to TO 36297 1697 15 know know VB 36297 1697 16 that that IN 36297 1697 17 the the DT 36297 1697 18 phenomenon phenomenon NN 36297 1697 19 may may MD 36297 1697 20 be be VB 36297 1697 21 accounted account VBN 36297 1697 22 for for IN 36297 1697 23 by by IN 36297 1697 24 the the DT 36297 1697 25 chromatic chromatic JJ 36297 1697 26 aberration aberration NN 36297 1697 27 in in IN 36297 1697 28 the the DT 36297 1697 29 eye eye NN 36297 1697 30 . . . 36297 1698 1 This this DT 36297 1698 2 may may MD 36297 1698 3 not not RB 36297 1698 4 be be VB 36297 1698 5 the the DT 36297 1698 6 true true JJ 36297 1698 7 explanation explanation NN 36297 1698 8 , , , 36297 1698 9 or or CC 36297 1698 10 it -PRON- PRP 36297 1698 11 may may MD 36297 1698 12 be be VB 36297 1698 13 only only RB 36297 1698 14 partially partially RB 36297 1698 15 correct correct JJ 36297 1698 16 . . . 36297 1699 1 Perhaps perhaps RB 36297 1699 2 some some DT 36297 1699 3 of of IN 36297 1699 4 the the DT 36297 1699 5 illusion illusion NN 36297 1699 6 is be VBZ 36297 1699 7 purely purely RB 36297 1699 8 psychological psychological JJ 36297 1699 9 in in IN 36297 1699 10 origin origin NN 36297 1699 11 . . . 36297 1700 1 Certainly certainly RB 36297 1700 2 the the DT 36297 1700 3 illusion illusion NN 36297 1700 4 is be VBZ 36297 1700 5 very very RB 36297 1700 6 apparent apparent JJ 36297 1700 7 to to IN 36297 1700 8 most most RBS 36297 1700 9 careful careful JJ 36297 1700 10 observers observer NNS 36297 1700 11 . . . 36297 1701 1 _ _ NNP 36297 1701 2 Color color NN 36297 1701 3 - - HYPH 36297 1701 4 sensibility sensibility NN 36297 1701 5 of of IN 36297 1701 6 the the DT 36297 1701 7 Retina._--This retina._--this CD 36297 1701 8 aspect aspect NN 36297 1701 9 was be VBD 36297 1701 10 touched touch VBN 36297 1701 11 upon upon IN 36297 1701 12 in in IN 36297 1701 13 Chapter Chapter NNP 36297 1701 14 III III NNP 36297 1701 15 , , , 36297 1701 16 but but CC 36297 1701 17 the the DT 36297 1701 18 differences difference NNS 36297 1701 19 in in IN 36297 1701 20 the the DT 36297 1701 21 sensibility sensibility NN 36297 1701 22 of of IN 36297 1701 23 various various JJ 36297 1701 24 areas area NNS 36297 1701 25 of of IN 36297 1701 26 the the DT 36297 1701 27 retina retina NNP 36297 1701 28 to to IN 36297 1701 29 various various JJ 36297 1701 30 colors color NNS 36297 1701 31 are be VBP 36297 1701 32 of of IN 36297 1701 33 sufficient sufficient JJ 36297 1701 34 importance importance NN 36297 1701 35 to to TO 36297 1701 36 be be VB 36297 1701 37 discussed discuss VBN 36297 1701 38 further further RB 36297 1701 39 . . . 36297 1702 1 The the DT 36297 1702 2 ability ability NN 36297 1702 3 to to TO 36297 1702 4 distinguish distinguish VB 36297 1702 5 light light NN 36297 1702 6 and and CC 36297 1702 7 color color NN 36297 1702 8 gradually gradually RB 36297 1702 9 fades fade NNS 36297 1702 10 or or CC 36297 1702 11 decreases decrease VBZ 36297 1702 12 at at IN 36297 1702 13 the the DT 36297 1702 14 periphery periphery NN 36297 1702 15 of of IN 36297 1702 16 the the DT 36297 1702 17 visual visual JJ 36297 1702 18 field field NN 36297 1702 19 , , , 36297 1702 20 but but CC 36297 1702 21 the the DT 36297 1702 22 actual actual JJ 36297 1702 23 areas area NNS 36297 1702 24 of of IN 36297 1702 25 the the DT 36297 1702 26 fields field NNS 36297 1702 27 of of IN 36297 1702 28 perception perception NN 36297 1702 29 vary vary VBP 36297 1702 30 considerably considerably RB 36297 1702 31 , , , 36297 1702 32 depending depend VBG 36297 1702 33 upon upon IN 36297 1702 34 the the DT 36297 1702 35 hue hue NN 36297 1702 36 or or CC 36297 1702 37 spectral spectral JJ 36297 1702 38 character character NN 36297 1702 39 of of IN 36297 1702 40 the the DT 36297 1702 41 light light NN 36297 1702 42 reaching reach VBG 36297 1702 43 the the DT 36297 1702 44 retina retina NNP 36297 1702 45 . . . 36297 1703 1 The the DT 36297 1703 2 extreme extreme JJ 36297 1703 3 peripheral peripheral JJ 36297 1703 4 region region NN 36297 1703 5 of of IN 36297 1703 6 the the DT 36297 1703 7 visual visual JJ 36297 1703 8 field field NN 36297 1703 9 is be VBZ 36297 1703 10 " " `` 36297 1703 11 color color NN 36297 1703 12 - - HYPH 36297 1703 13 blind blind JJ 36297 1703 14 " " '' 36297 1703 15 ; ; : 36297 1703 16 that that RB 36297 1703 17 is is RB 36297 1703 18 , , , 36297 1703 19 color color NN 36297 1703 20 ceases cease NNS 36297 1703 21 to to TO 36297 1703 22 be be VB 36297 1703 23 perceived perceive VBN 36297 1703 24 before before IN 36297 1703 25 brightness brightness NN 36297 1703 26 - - HYPH 36297 1703 27 perception perception NN 36297 1703 28 vanishes vanishe NNS 36297 1703 29 in in IN 36297 1703 30 the the DT 36297 1703 31 outskirts outskirt NNS 36297 1703 32 of of IN 36297 1703 33 the the DT 36297 1703 34 visual visual JJ 36297 1703 35 field field NN 36297 1703 36 . . . 36297 1704 1 These these DT 36297 1704 2 fields field NNS 36297 1704 3 for for IN 36297 1704 4 various various JJ 36297 1704 5 colors color NNS 36297 1704 6 depend depend VBP 36297 1704 7 in in IN 36297 1704 8 size size NN 36297 1704 9 and and CC 36297 1704 10 contour contour NN 36297 1704 11 not not RB 36297 1704 12 only only RB 36297 1704 13 upon upon IN 36297 1704 14 the the DT 36297 1704 15 hue hue NN 36297 1704 16 or or CC 36297 1704 17 spectral spectral JJ 36297 1704 18 character character NN 36297 1704 19 of of IN 36297 1704 20 the the DT 36297 1704 21 light light NN 36297 1704 22 - - HYPH 36297 1704 23 stimuli stimulus NNS 36297 1704 24 but but CC 36297 1704 25 also also RB 36297 1704 26 upon upon IN 36297 1704 27 the the DT 36297 1704 28 intensity intensity NN 36297 1704 29 and and CC 36297 1704 30 perhaps perhaps RB 36297 1704 31 upon upon IN 36297 1704 32 the the DT 36297 1704 33 size size NN 36297 1704 34 of of IN 36297 1704 35 the the DT 36297 1704 36 stimuli stimulus NNS 36297 1704 37 . . . 36297 1705 1 There there EX 36297 1705 2 is be VBZ 36297 1705 3 some some DT 36297 1705 4 disagreement disagreement NN 36297 1705 5 as as IN 36297 1705 6 to to IN 36297 1705 7 the the DT 36297 1705 8 relative relative JJ 36297 1705 9 sizes size NNS 36297 1705 10 of of IN 36297 1705 11 these these DT 36297 1705 12 fields field NNS 36297 1705 13 but but CC 36297 1705 14 it -PRON- PRP 36297 1705 15 appears appear VBZ 36297 1705 16 that that IN 36297 1705 17 they -PRON- PRP 36297 1705 18 increase increase VBP 36297 1705 19 in in IN 36297 1705 20 size size NN 36297 1705 21 in in IN 36297 1705 22 the the DT 36297 1705 23 following follow VBG 36297 1705 24 order order NN 36297 1705 25 : : : 36297 1705 26 green green JJ 36297 1705 27 , , , 36297 1705 28 red red JJ 36297 1705 29 , , , 36297 1705 30 blue blue JJ 36297 1705 31 , , , 36297 1705 32 white white JJ 36297 1705 33 ( ( -LRB- 36297 1705 34 colorless colorless NN 36297 1705 35 ) ) -RRB- 36297 1705 36 . . . 36297 1706 1 The the DT 36297 1706 2 performances performance NNS 36297 1706 3 of of IN 36297 1706 4 after after IN 36297 1706 5 - - HYPH 36297 1706 6 images image NNS 36297 1706 7 , , , 36297 1706 8 and and CC 36297 1706 9 the the DT 36297 1706 10 rates rate NNS 36297 1706 11 of of IN 36297 1706 12 growth growth NN 36297 1706 13 and and CC 36297 1706 14 decay decay NN 36297 1706 15 of of IN 36297 1706 16 sensation sensation NN 36297 1706 17 vary vary VBP 36297 1706 18 for for IN 36297 1706 19 different different JJ 36297 1706 20 colors color NNS 36297 1706 21 and and CC 36297 1706 22 for for IN 36297 1706 23 different different JJ 36297 1706 24 areas area NNS 36297 1706 25 of of IN 36297 1706 26 the the DT 36297 1706 27 retina retina NNP 36297 1706 28 , , , 36297 1706 29 but but CC 36297 1706 30 it -PRON- PRP 36297 1706 31 would would MD 36297 1706 32 be be VB 36297 1706 33 tedious tedious JJ 36297 1706 34 to to TO 36297 1706 35 peruse peruse VB 36297 1706 36 the the DT 36297 1706 37 many many JJ 36297 1706 38 details detail NNS 36297 1706 39 of of IN 36297 1706 40 these these DT 36297 1706 41 aspects aspect NNS 36297 1706 42 of of IN 36297 1706 43 vision vision NN 36297 1706 44 . . . 36297 1707 1 They -PRON- PRP 36297 1707 2 are be VBP 36297 1707 3 mentioned mention VBN 36297 1707 4 in in IN 36297 1707 5 order order NN 36297 1707 6 that that IN 36297 1707 7 the the DT 36297 1707 8 reader reader NN 36297 1707 9 may may MD 36297 1707 10 take take VB 36297 1707 11 them -PRON- PRP 36297 1707 12 into into IN 36297 1707 13 account account NN 36297 1707 14 in in IN 36297 1707 15 any any DT 36297 1707 16 specific specific JJ 36297 1707 17 case case NN 36297 1707 18 . . . 36297 1708 1 As as IN 36297 1708 2 already already RB 36297 1708 3 stated state VBN 36297 1708 4 , , , 36297 1708 5 the the DT 36297 1708 6 central central JJ 36297 1708 7 part part NN 36297 1708 8 of of IN 36297 1708 9 the the DT 36297 1708 10 visual visual JJ 36297 1708 11 field field NN 36297 1708 12 -- -- : 36297 1708 13 the the DT 36297 1708 14 fovea fovea NN 36297 1708 15 upon upon IN 36297 1708 16 which which WDT 36297 1708 17 we -PRON- PRP 36297 1708 18 depend depend VBP 36297 1708 19 for for IN 36297 1708 20 acute acute JJ 36297 1708 21 vision vision NN 36297 1708 22 -- -- : 36297 1708 23 contains contain VBZ 36297 1708 24 a a DT 36297 1708 25 yellowish yellowish JJ 36297 1708 26 pigmentation pigmentation NN 36297 1708 27 , , , 36297 1708 28 which which WDT 36297 1708 29 is be VBZ 36297 1708 30 responsible responsible JJ 36297 1708 31 for for IN 36297 1708 32 the the DT 36297 1708 33 term term NN 36297 1708 34 " " `` 36297 1708 35 yellow yellow JJ 36297 1708 36 spot spot NN 36297 1708 37 . . . 36297 1708 38 " " '' 36297 1709 1 This this DT 36297 1709 2 operates operate VBZ 36297 1709 3 as as IN 36297 1709 4 a a DT 36297 1709 5 yellow yellow JJ 36297 1709 6 filter filter NN 36297 1709 7 for for IN 36297 1709 8 this this DT 36297 1709 9 central central JJ 36297 1709 10 area area NN 36297 1709 11 and and CC 36297 1709 12 modifies modify VBZ 36297 1709 13 the the DT 36297 1709 14 appearance appearance NN 36297 1709 15 of of IN 36297 1709 16 visual visual JJ 36297 1709 17 fields field NNS 36297 1709 18 quite quite PDT 36297 1709 19 the the DT 36297 1709 20 same same JJ 36297 1709 21 as as IN 36297 1709 22 if if IN 36297 1709 23 a a DT 36297 1709 24 similar similar JJ 36297 1709 25 yellow yellow JJ 36297 1709 26 filter filter NN 36297 1709 27 was be VBD 36297 1709 28 placed place VBN 36297 1709 29 in in IN 36297 1709 30 the the DT 36297 1709 31 central central JJ 36297 1709 32 position position NN 36297 1709 33 of of IN 36297 1709 34 the the DT 36297 1709 35 field field NN 36297 1709 36 of of IN 36297 1709 37 vision vision NN 36297 1709 38 . . . 36297 1710 1 The the DT 36297 1710 2 effect effect NN 36297 1710 3 of of IN 36297 1710 4 the the DT 36297 1710 5 selectivity selectivity NN 36297 1710 6 of of IN 36297 1710 7 the the DT 36297 1710 8 " " `` 36297 1710 9 yellow yellow JJ 36297 1710 10 spot spot NN 36297 1710 11 " " '' 36297 1710 12 is be VBZ 36297 1710 13 noticeable noticeable JJ 36297 1710 14 in in IN 36297 1710 15 viewing view VBG 36297 1710 16 certain certain JJ 36297 1710 17 colors color NNS 36297 1710 18 . . . 36297 1711 1 _ _ NNP 36297 1711 2 Purkinje Purkinje NNP 36297 1711 3 Effect._--The Effect._--The NNP 36297 1711 4 relative relative JJ 36297 1711 5 sensibility sensibility NN 36297 1711 6 of of IN 36297 1711 7 the the DT 36297 1711 8 retina retina NNP 36297 1711 9 varies varie NNS 36297 1711 10 for for IN 36297 1711 11 different different JJ 36297 1711 12 colors color NNS 36297 1711 13 with with IN 36297 1711 14 a a DT 36297 1711 15 change change NN 36297 1711 16 in in IN 36297 1711 17 brightness brightness NN 36297 1711 18 ; ; : 36297 1711 19 or or CC 36297 1711 20 it -PRON- PRP 36297 1711 21 may may MD 36297 1711 22 be be VB 36297 1711 23 better well JJR 36297 1711 24 to to TO 36297 1711 25 state state VB 36297 1711 26 that that IN 36297 1711 27 the the DT 36297 1711 28 relative relative JJ 36297 1711 29 sensations sensation NNS 36297 1711 30 for for IN 36297 1711 31 various various JJ 36297 1711 32 colors color NNS 36297 1711 33 alters alter NNS 36297 1711 34 as as IN 36297 1711 35 the the DT 36297 1711 36 brightness brightness NN 36297 1711 37 values value NNS 36297 1711 38 are be VBP 36297 1711 39 reduced reduce VBN 36297 1711 40 to to IN 36297 1711 41 a a DT 36297 1711 42 low low JJ 36297 1711 43 intensity intensity NN 36297 1711 44 . . . 36297 1712 1 For for IN 36297 1712 2 example example NN 36297 1712 3 , , , 36297 1712 4 if if IN 36297 1712 5 a a DT 36297 1712 6 reddish reddish JJ 36297 1712 7 purple purple NN 36297 1712 8 ( ( -LRB- 36297 1712 9 consisting consist VBG 36297 1712 10 of of IN 36297 1712 11 red red JJ 36297 1712 12 and and CC 36297 1712 13 blue blue JJ 36297 1712 14 or or CC 36297 1712 15 violet violet NN 36297 1712 16 rays ray NNS 36297 1712 17 ) ) -RRB- 36297 1712 18 be be VB 36297 1712 19 illuminated illuminate VBN 36297 1712 20 in in IN 36297 1712 21 such such PDT 36297 1712 22 a a DT 36297 1712 23 manner manner NN 36297 1712 24 that that IN 36297 1712 25 the the DT 36297 1712 26 intensity intensity NN 36297 1712 27 of of IN 36297 1712 28 illumination illumination NN 36297 1712 29 , , , 36297 1712 30 and and CC 36297 1712 31 consequently consequently RB 36297 1712 32 its -PRON- PRP$ 36297 1712 33 brightness brightness NN 36297 1712 34 , , , 36297 1712 35 may may MD 36297 1712 36 be be VB 36297 1712 37 reduced reduce VBN 36297 1712 38 from from IN 36297 1712 39 normal normal JJ 36297 1712 40 to to IN 36297 1712 41 a a DT 36297 1712 42 low low JJ 36297 1712 43 value value NN 36297 1712 44 ( ( -LRB- 36297 1712 45 approximating approximating JJ 36297 1712 46 moonlight moonlight NN 36297 1712 47 conditions condition NNS 36297 1712 48 ) ) -RRB- 36297 1712 49 , , , 36297 1712 50 it -PRON- PRP 36297 1712 51 will will MD 36297 1712 52 be be VB 36297 1712 53 seen see VBN 36297 1712 54 to to TO 36297 1712 55 vary vary VB 36297 1712 56 from from IN 36297 1712 57 reddish reddish JJ 36297 1712 58 purple purple NN 36297 1712 59 to to IN 36297 1712 60 violet violet VB 36297 1712 61 . . . 36297 1713 1 In in IN 36297 1713 2 doing do VBG 36297 1713 3 this this DT 36297 1713 4 its -PRON- PRP$ 36297 1713 5 appearance appearance NN 36297 1713 6 changes change VBZ 36297 1713 7 through through IN 36297 1713 8 the the DT 36297 1713 9 range range NN 36297 1713 10 of of IN 36297 1713 11 purples purple NNS 36297 1713 12 from from IN 36297 1713 13 reddish reddish JJ 36297 1713 14 to to IN 36297 1713 15 violet violet NN 36297 1713 16 . . . 36297 1714 1 This this DT 36297 1714 2 can can MD 36297 1714 3 be be VB 36297 1714 4 accomplished accomplish VBN 36297 1714 5 by by IN 36297 1714 6 orientation orientation NN 36297 1714 7 of of IN 36297 1714 8 the the DT 36297 1714 9 purple purple JJ 36297 1714 10 surface surface NN 36297 1714 11 throughout throughout IN 36297 1714 12 various various JJ 36297 1714 13 angles angle NNS 36297 1714 14 with with IN 36297 1714 15 respect respect NN 36297 1714 16 to to IN 36297 1714 17 the the DT 36297 1714 18 direction direction NN 36297 1714 19 of of IN 36297 1714 20 light light NN 36297 1714 21 or or CC 36297 1714 22 by by IN 36297 1714 23 reducing reduce VBG 36297 1714 24 the the DT 36297 1714 25 illumination illumination NN 36297 1714 26 by by IN 36297 1714 27 means mean NNS 36297 1714 28 of of IN 36297 1714 29 screens screen NNS 36297 1714 30 . . . 36297 1715 1 In in IN 36297 1715 2 general general JJ 36297 1715 3 the the DT 36297 1715 4 Purkinje purkinje JJ 36297 1715 5 effect effect NN 36297 1715 6 may may MD 36297 1715 7 be be VB 36297 1715 8 described describe VBN 36297 1715 9 as as IN 36297 1715 10 an an DT 36297 1715 11 increasing increase VBG 36297 1715 12 sensibility sensibility NN 36297 1715 13 of of IN 36297 1715 14 the the DT 36297 1715 15 retina retina NNP 36297 1715 16 for for IN 36297 1715 17 light light NN 36297 1715 18 of of IN 36297 1715 19 shorter short JJR 36297 1715 20 wave wave NN 36297 1715 21 - - HYPH 36297 1715 22 lengths length NNS 36297 1715 23 ( ( -LRB- 36297 1715 24 violet violet NN 36297 1715 25 , , , 36297 1715 26 blue blue NNP 36297 1715 27 , , , 36297 1715 28 green green JJ 36297 1715 29 ) ) -RRB- 36297 1715 30 as as IN 36297 1715 31 the the DT 36297 1715 32 brightness brightness NN 36297 1715 33 decreases decrease VBZ 36297 1715 34 , , , 36297 1715 35 or or CC 36297 1715 36 a a DT 36297 1715 37 corresponding correspond VBG 36297 1715 38 decreasing decrease VBG 36297 1715 39 sensibility sensibility NN 36297 1715 40 for for IN 36297 1715 41 light light NN 36297 1715 42 of of IN 36297 1715 43 longer long JJR 36297 1715 44 wave wave NN 36297 1715 45 - - HYPH 36297 1715 46 lengths length NNS 36297 1715 47 ( ( -LRB- 36297 1715 48 yellow yellow NNP 36297 1715 49 , , , 36297 1715 50 orange orange NNP 36297 1715 51 , , , 36297 1715 52 red red NNP 36297 1715 53 ) ) -RRB- 36297 1715 54 . . . 36297 1716 1 The the DT 36297 1716 2 effect effect NN 36297 1716 3 may may MD 36297 1716 4 be be VB 36297 1716 5 seen see VBN 36297 1716 6 on on IN 36297 1716 7 any any DT 36297 1716 8 colored colored JJ 36297 1716 9 surfaces surface NNS 36297 1716 10 at at IN 36297 1716 11 twilight twilight NN 36297 1716 12 illumination illumination NN 36297 1716 13 . . . 36297 1717 1 A a DT 36297 1717 2 blue blue JJ 36297 1717 3 and and CC 36297 1717 4 a a DT 36297 1717 5 red red JJ 36297 1717 6 flower flower NN 36297 1717 7 , , , 36297 1717 8 which which WDT 36297 1717 9 appear appear VBP 36297 1717 10 of of IN 36297 1717 11 the the DT 36297 1717 12 same same JJ 36297 1717 13 brightness brightness NN 36297 1717 14 before before IN 36297 1717 15 sunset sunset NN 36297 1717 16 will will MD 36297 1717 17 begin begin VB 36297 1717 18 to to TO 36297 1717 19 appear appear VB 36297 1717 20 unequal unequal JJ 36297 1717 21 in in IN 36297 1717 22 this this DT 36297 1717 23 respect respect NN 36297 1717 24 as as IN 36297 1717 25 twilight twilight NN 36297 1717 26 deepens deepen NNS 36297 1717 27 . . . 36297 1718 1 The the DT 36297 1718 2 red red NN 36297 1718 3 will will MD 36297 1718 4 become become VB 36297 1718 5 darker darker RBR 36297 1718 6 more more RBR 36297 1718 7 rapidly rapidly RB 36297 1718 8 than than IN 36297 1718 9 the the DT 36297 1718 10 blue blue NN 36297 1718 11 if if IN 36297 1718 12 there there EX 36297 1718 13 are be VBP 36297 1718 14 no no DT 36297 1718 15 appreciable appreciable JJ 36297 1718 16 changes change NNS 36297 1718 17 in in IN 36297 1718 18 the the DT 36297 1718 19 color color NN 36297 1718 20 of of IN 36297 1718 21 the the DT 36297 1718 22 daylight daylight NN 36297 1718 23 . . . 36297 1719 1 Finally finally RB 36297 1719 2 all all DT 36297 1719 3 color color NN 36297 1719 4 disappears disappear VBZ 36297 1719 5 . . . 36297 1720 1 It -PRON- PRP 36297 1720 2 is be VBZ 36297 1720 3 better well JJR 36297 1720 4 to to TO 36297 1720 5 perform perform VB 36297 1720 6 this this DT 36297 1720 7 experiment experiment NN 36297 1720 8 under under IN 36297 1720 9 artificial artificial JJ 36297 1720 10 light light NN 36297 1720 11 , , , 36297 1720 12 in in IN 36297 1720 13 order order NN 36297 1720 14 that that IN 36297 1720 15 the the DT 36297 1720 16 spectral spectral JJ 36297 1720 17 character character NN 36297 1720 18 of of IN 36297 1720 19 the the DT 36297 1720 20 illuminant illuminant NN 36297 1720 21 may may MD 36297 1720 22 be be VB 36297 1720 23 certain certain JJ 36297 1720 24 to to TO 36297 1720 25 remain remain VB 36297 1720 26 constant constant JJ 36297 1720 27 . . . 36297 1721 1 In in IN 36297 1721 2 this this DT 36297 1721 3 case case NN 36297 1721 4 rheostats rheostat NNS 36297 1721 5 must must MD 36297 1721 6 not not RB 36297 1721 7 be be VB 36297 1721 8 used use VBN 36297 1721 9 for for IN 36297 1721 10 dimming dim VBG 36297 1721 11 the the DT 36297 1721 12 light light NN 36297 1721 13 because because IN 36297 1721 14 of of IN 36297 1721 15 the the DT 36297 1721 16 attendant attendant JJ 36297 1721 17 changes change NNS 36297 1721 18 in in IN 36297 1721 19 color color NN 36297 1721 20 or or CC 36297 1721 21 quality quality NN 36297 1721 22 of of IN 36297 1721 23 the the DT 36297 1721 24 light light NN 36297 1721 25 . . . 36297 1722 1 The the DT 36297 1722 2 Purkinje purkinje JJ 36297 1722 3 effect effect NN 36297 1722 4 may may MD 36297 1722 5 be be VB 36297 1722 6 noticed notice VBN 36297 1722 7 by by IN 36297 1722 8 the the DT 36297 1722 9 careful careful JJ 36297 1722 10 observer observer NN 36297 1722 11 and and CC 36297 1722 12 it -PRON- PRP 36297 1722 13 is be VBZ 36297 1722 14 responsible responsible JJ 36297 1722 15 for for IN 36297 1722 16 certain certain JJ 36297 1722 17 illusions illusion NNS 36297 1722 18 . . . 36297 1723 1 Apparently apparently RB 36297 1723 2 it -PRON- PRP 36297 1723 3 can can MD 36297 1723 4 not not RB 36297 1723 5 operate operate VB 36297 1723 6 over over IN 36297 1723 7 one one CD 36297 1723 8 portion portion NN 36297 1723 9 of of IN 36297 1723 10 the the DT 36297 1723 11 retina retina NNP 36297 1723 12 , , , 36297 1723 13 while while IN 36297 1723 14 the the DT 36297 1723 15 remainder remainder NN 36297 1723 16 is be VBZ 36297 1723 17 stimulated stimulate VBN 36297 1723 18 by by IN 36297 1723 19 normal normal JJ 36297 1723 20 intensities intensity NNS 36297 1723 21 of of IN 36297 1723 22 light light NN 36297 1723 23 . . . 36297 1724 1 _ _ NNP 36297 1724 2 Retinal Retinal NNP 36297 1724 3 Rivalry._--Many Rivalry._--Many HYPH 36297 1724 4 curious curious JJ 36297 1724 5 effects effect NNS 36297 1724 6 may may MD 36297 1724 7 be be VB 36297 1724 8 obtained obtain VBN 36297 1724 9 by by IN 36297 1724 10 stimulating stimulate VBG 36297 1724 11 the the DT 36297 1724 12 two two CD 36297 1724 13 retinas retina NNS 36297 1724 14 with with IN 36297 1724 15 lights light NNS 36297 1724 16 , , , 36297 1724 17 respectively respectively RB 36297 1724 18 different different JJ 36297 1724 19 in in IN 36297 1724 20 color color NN 36297 1724 21 . . . 36297 1725 1 For for IN 36297 1725 2 example example NN 36297 1725 3 , , , 36297 1725 4 it -PRON- PRP 36297 1725 5 is be VBZ 36297 1725 6 interesting interesting JJ 36297 1725 7 to to TO 36297 1725 8 place place VB 36297 1725 9 a a DT 36297 1725 10 blue blue JJ 36297 1725 11 glass glass NN 36297 1725 12 before before IN 36297 1725 13 one one CD 36297 1725 14 eye eye NN 36297 1725 15 and and CC 36297 1725 16 a a DT 36297 1725 17 yellow yellow JJ 36297 1725 18 or or CC 36297 1725 19 red red JJ 36297 1725 20 one one NN 36297 1725 21 before before IN 36297 1725 22 the the DT 36297 1725 23 other other JJ 36297 1725 24 . . . 36297 1726 1 The the DT 36297 1726 2 two two CD 36297 1726 3 independent independent JJ 36297 1726 4 monocular monocular JJ 36297 1726 5 fields field NNS 36297 1726 6 strive strive VBP 36297 1726 7 for for IN 36297 1726 8 supremacy supremacy NN 36297 1726 9 and and CC 36297 1726 10 this this DT 36297 1726 11 rivalry rivalry NN 36297 1726 12 is be VBZ 36297 1726 13 quite quite RB 36297 1726 14 impressive impressive JJ 36297 1726 15 . . . 36297 1727 1 For for IN 36297 1727 2 a a DT 36297 1727 3 moment moment NN 36297 1727 4 the the DT 36297 1727 5 whole whole JJ 36297 1727 6 field field NN 36297 1727 7 may may MD 36297 1727 8 appear appear VB 36297 1727 9 of of IN 36297 1727 10 one one CD 36297 1727 11 color color NN 36297 1727 12 and and CC 36297 1727 13 then then RB 36297 1727 14 suddenly suddenly RB 36297 1727 15 it -PRON- PRP 36297 1727 16 will will MD 36297 1727 17 appear appear VB 36297 1727 18 of of IN 36297 1727 19 the the DT 36297 1727 20 other other JJ 36297 1727 21 color color NN 36297 1727 22 . . . 36297 1728 1 Apparently apparently RB 36297 1728 2 the the DT 36297 1728 3 fluctuation fluctuation NN 36297 1728 4 of of IN 36297 1728 5 attention attention NN 36297 1728 6 is be VBZ 36297 1728 7 a a DT 36297 1728 8 factor factor NN 36297 1728 9 . . . 36297 1729 1 Usually usually RB 36297 1729 2 it -PRON- PRP 36297 1729 3 does do VBZ 36297 1729 4 not not RB 36297 1729 5 seem seem VB 36297 1729 6 to to TO 36297 1729 7 be be VB 36297 1729 8 possible possible JJ 36297 1729 9 to to TO 36297 1729 10 reach reach VB 36297 1729 11 a a DT 36297 1729 12 quiescent quiescent JJ 36297 1729 13 state state NN 36297 1729 14 or or CC 36297 1729 15 a a DT 36297 1729 16 perfect perfect JJ 36297 1729 17 mixture mixture NN 36297 1729 18 of of IN 36297 1729 19 the the DT 36297 1729 20 two two CD 36297 1729 21 colors color NNS 36297 1729 22 in in IN 36297 1729 23 this this DT 36297 1729 24 manner manner NN 36297 1729 25 . . . 36297 1730 1 The the DT 36297 1730 2 dependence dependence NN 36297 1730 3 of of IN 36297 1730 4 one one CD 36297 1730 5 monocular monocular JJ 36297 1730 6 field field NN 36297 1730 7 upon upon IN 36297 1730 8 the the DT 36297 1730 9 other other JJ 36297 1730 10 , , , 36297 1730 11 and and CC 36297 1730 12 also also RB 36297 1730 13 their -PRON- PRP$ 36297 1730 14 independence independence NN 36297 1730 15 , , , 36297 1730 16 are be VBP 36297 1730 17 emphasized emphasize VBN 36297 1730 18 by by IN 36297 1730 19 this this DT 36297 1730 20 experiment experiment NN 36297 1730 21 . . . 36297 1731 1 It -PRON- PRP 36297 1731 2 is be VBZ 36297 1731 3 of of IN 36297 1731 4 interest interest NN 36297 1731 5 to to TO 36297 1731 6 consider consider VB 36297 1731 7 the the DT 36297 1731 8 illusions illusion NNS 36297 1731 9 of of IN 36297 1731 10 reversible reversible JJ 36297 1731 11 perspective perspective NN 36297 1731 12 and and CC 36297 1731 13 others other NNS 36297 1731 14 in in IN 36297 1731 15 Chapter chapter NN 36297 1731 16 V v NN 36297 1731 17 in in IN 36297 1731 18 this this DT 36297 1731 19 connection connection NN 36297 1731 20 . . . 36297 1732 1 [ [ -LRB- 36297 1732 2 Illustration illustration NN 36297 1732 3 : : : 36297 1732 4 Fig Fig NNP 36297 1732 5 . . . 36297 1733 1 69.--By 69.--by LS 36297 1733 2 combining combine VBG 36297 1733 3 these these DT 36297 1733 4 stereoscopically stereoscopically RB 36297 1733 5 the the DT 36297 1733 6 effect effect NN 36297 1733 7 of of IN 36297 1733 8 metallic metallic NNP 36297 1733 9 lustre lustre NNP 36297 1733 10 ( ( -LRB- 36297 1733 11 similar similar JJ 36297 1733 12 to to IN 36297 1733 13 graphite graphite VB 36297 1733 14 in in IN 36297 1733 15 this this DT 36297 1733 16 case case NN 36297 1733 17 ) ) -RRB- 36297 1733 18 is be VBZ 36297 1733 19 obtained obtain VBN 36297 1733 20 . . . 36297 1733 21 ] ] -RRB- 36297 1734 1 One one CD 36297 1734 2 of of IN 36297 1734 3 the the DT 36297 1734 4 interesting interesting JJ 36297 1734 5 results result NNS 36297 1734 6 of of IN 36297 1734 7 retinal retinal JJ 36297 1734 8 rivalry rivalry NN 36297 1734 9 is be VBZ 36297 1734 10 found find VBN 36297 1734 11 in in IN 36297 1734 12 combining combine VBG 36297 1734 13 two two CD 36297 1734 14 stereoscopic stereoscopic JJ 36297 1734 15 pictures picture NNS 36297 1734 16 in in IN 36297 1734 17 black black JJ 36297 1734 18 and and CC 36297 1734 19 white white JJ 36297 1734 20 with with IN 36297 1734 21 the the DT 36297 1734 22 black black JJ 36297 1734 23 and and CC 36297 1734 24 white white JJ 36297 1734 25 reversed reverse VBN 36297 1734 26 in in IN 36297 1734 27 one one CD 36297 1734 28 of of IN 36297 1734 29 them -PRON- PRP 36297 1734 30 . . . 36297 1735 1 The the DT 36297 1735 2 apparently apparently RB 36297 1735 3 solid solid JJ 36297 1735 4 object object NN 36297 1735 5 will will MD 36297 1735 6 appear appear VB 36297 1735 7 to to TO 36297 1735 8 possess possess VB 36297 1735 9 lustre lustre NNP 36297 1735 10 . . . 36297 1736 1 The the DT 36297 1736 2 experiment experiment NN 36297 1736 3 may may MD 36297 1736 4 be be VB 36297 1736 5 tried try VBN 36297 1736 6 with with IN 36297 1736 7 Fig Fig NNP 36297 1736 8 . . . 36297 1737 1 69 69 CD 36297 1737 2 by by IN 36297 1737 3 combining combine VBG 36297 1737 4 the the DT 36297 1737 5 two two CD 36297 1737 6 stereoscopic stereoscopic JJ 36297 1737 7 pictures picture NNS 36297 1737 8 by by IN 36297 1737 9 converging converge VBG 36297 1737 10 or or CC 36297 1737 11 diverging diverge VBG 36297 1737 12 the the DT 36297 1737 13 axes axis NNS 36297 1737 14 of of IN 36297 1737 15 the the DT 36297 1737 16 eyes eye NNS 36297 1737 17 as as IN 36297 1737 18 described describe VBN 36297 1737 19 in in IN 36297 1737 20 connection connection NN 36297 1737 21 with with IN 36297 1737 22 Figs fig NNS 36297 1737 23 . . . 36297 1738 1 2 2 CD 36297 1738 2 and and CC 36297 1738 3 3 3 CD 36297 1738 4 . . . 36297 1739 1 It -PRON- PRP 36297 1739 2 will will MD 36297 1739 3 be be VB 36297 1739 4 noted note VBN 36297 1739 5 that that IN 36297 1739 6 in in IN 36297 1739 7 order order NN 36297 1739 8 for for IN 36297 1739 9 two two CD 36297 1739 10 stereoscopic stereoscopic JJ 36297 1739 11 pictures picture NNS 36297 1739 12 , , , 36297 1739 13 when when WRB 36297 1739 14 combined combine VBN 36297 1739 15 , , , 36297 1739 16 to to TO 36297 1739 17 produce produce VB 36297 1739 18 a a DT 36297 1739 19 perfect perfect JJ 36297 1739 20 effect effect NN 36297 1739 21 of of IN 36297 1739 22 three three CD 36297 1739 23 dimensions dimension NNS 36297 1739 24 their -PRON- PRP$ 36297 1739 25 dissimilarity dissimilarity NN 36297 1739 26 must must MD 36297 1739 27 be be VB 36297 1739 28 no no DT 36297 1739 29 more more JJR 36297 1739 30 than than IN 36297 1739 31 that that DT 36297 1739 32 existing exist VBG 36297 1739 33 between between IN 36297 1739 34 the the DT 36297 1739 35 two two CD 36297 1739 36 views view NNS 36297 1739 37 from from IN 36297 1739 38 the the DT 36297 1739 39 two two CD 36297 1739 40 eyes eye NNS 36297 1739 41 respectively respectively RB 36297 1739 42 . . . 36297 1740 1 The the DT 36297 1740 2 dissimilarity dissimilarity NN 36297 1740 3 in in IN 36297 1740 4 Fig Fig NNP 36297 1740 5 . . . 36297 1741 1 69 69 CD 36297 1741 2 is be VBZ 36297 1741 3 correct correct JJ 36297 1741 4 as as IN 36297 1741 5 to to TO 36297 1741 6 perspective perspective NN 36297 1741 7 , , , 36297 1741 8 but but CC 36297 1741 9 the the DT 36297 1741 10 reversal reversal NN 36297 1741 11 of of IN 36297 1741 12 white white JJ 36297 1741 13 and and CC 36297 1741 14 black black JJ 36297 1741 15 in in IN 36297 1741 16 one one CD 36297 1741 17 of of IN 36297 1741 18 them -PRON- PRP 36297 1741 19 produces produce VBZ 36297 1741 20 an an DT 36297 1741 21 effect effect NN 36297 1741 22 beyond beyond IN 36297 1741 23 that that DT 36297 1741 24 of of IN 36297 1741 25 true true JJ 36297 1741 26 third third JJ 36297 1741 27 dimension dimension NN 36297 1741 28 . . . 36297 1742 1 When when WRB 36297 1742 2 the the DT 36297 1742 3 colors color NNS 36297 1742 4 are be VBP 36297 1742 5 so so RB 36297 1742 6 arranged arrange VBN 36297 1742 7 in in IN 36297 1742 8 such such JJ 36297 1742 9 pictures picture NNS 36297 1742 10 as as IN 36297 1742 11 to to TO 36297 1742 12 be be VB 36297 1742 13 quite quite RB 36297 1742 14 different different JJ 36297 1742 15 in in IN 36297 1742 16 the the DT 36297 1742 17 two two CD 36297 1742 18 the the DT 36297 1742 19 effects effect NNS 36297 1742 20 are be VBP 36297 1742 21 striking strike VBG 36297 1742 22 . . . 36297 1743 1 There there EX 36297 1743 2 is be VBZ 36297 1743 3 , , , 36297 1743 4 in in IN 36297 1743 5 such such JJ 36297 1743 6 cases case NNS 36297 1743 7 , , , 36297 1743 8 an an DT 36297 1743 9 effect effect NN 36297 1743 10 beyond beyond IN 36297 1743 11 that that DT 36297 1743 12 of of IN 36297 1743 13 perfect perfect JJ 36297 1743 14 binocular binocular JJ 36297 1743 15 combination combination NN 36297 1743 16 . . . 36297 1744 1 By by IN 36297 1744 2 means mean NNS 36297 1744 3 of of IN 36297 1744 4 the the DT 36297 1744 5 stereoscope stereoscope NN 36297 1744 6 it -PRON- PRP 36297 1744 7 is be VBZ 36297 1744 8 possible possible JJ 36297 1744 9 to to TO 36297 1744 10 attain attain VB 36297 1744 11 binocular binocular JJ 36297 1744 12 mixture mixture NN 36297 1744 13 of of IN 36297 1744 14 colors color NNS 36297 1744 15 but but CC 36297 1744 16 this this DT 36297 1744 17 is be VBZ 36297 1744 18 usually usually RB 36297 1744 19 difficult difficult JJ 36297 1744 20 to to TO 36297 1744 21 accomplish accomplish VB 36297 1744 22 . . . 36297 1745 1 The the DT 36297 1745 2 difficulty difficulty NN 36297 1745 3 decreases decrease VBZ 36297 1745 4 as as IN 36297 1745 5 the the DT 36297 1745 6 brightness brightness NN 36297 1745 7 and and CC 36297 1745 8 saturation saturation NN 36297 1745 9 of of IN 36297 1745 10 the the DT 36297 1745 11 colors color NNS 36297 1745 12 decrease decrease VBP 36297 1745 13 and and CC 36297 1745 14 is be VBZ 36297 1745 15 less less JJR 36297 1745 16 for for IN 36297 1745 17 colors color NNS 36297 1745 18 which which WDT 36297 1745 19 do do VBP 36297 1745 20 not not RB 36297 1745 21 differ differ VB 36297 1745 22 much much JJ 36297 1745 23 in in IN 36297 1745 24 hue hue NNP 36297 1745 25 and and CC 36297 1745 26 in in IN 36297 1745 27 brightness brightness NN 36297 1745 28 . . . 36297 1746 1 These these DT 36297 1746 2 effects effect NNS 36297 1746 3 may may MD 36297 1746 4 be be VB 36297 1746 5 studied study VBN 36297 1746 6 at at IN 36297 1746 7 any any DT 36297 1746 8 moment moment NN 36297 1746 9 , , , 36297 1746 10 for for IN 36297 1746 11 it -PRON- PRP 36297 1746 12 is be VBZ 36297 1746 13 only only RB 36297 1746 14 necessary necessary JJ 36297 1746 15 to to TO 36297 1746 16 throw throw VB 36297 1746 17 the the DT 36297 1746 18 eyes eye NNS 36297 1746 19 out out IN 36297 1746 20 of of IN 36297 1746 21 focus focus NN 36297 1746 22 for for IN 36297 1746 23 any any DT 36297 1746 24 object object NN 36297 1746 25 and and CC 36297 1746 26 to to TO 36297 1746 27 note note VB 36297 1746 28 the the DT 36297 1746 29 results result NNS 36297 1746 30 . . . 36297 1747 1 Many many JJ 36297 1747 2 simple simple JJ 36297 1747 3 experiments experiment NNS 36297 1747 4 may may MD 36297 1747 5 be be VB 36297 1747 6 arranged arrange VBN 36297 1747 7 for for IN 36297 1747 8 a a DT 36297 1747 9 stereoscope stereoscope NN 36297 1747 10 , , , 36297 1747 11 using use VBG 36297 1747 12 black black JJ 36297 1747 13 and and CC 36297 1747 14 white white JJ 36297 1747 15 , , , 36297 1747 16 and and CC 36297 1747 17 various various JJ 36297 1747 18 combinations combination NNS 36297 1747 19 of of IN 36297 1747 20 colors color NNS 36297 1747 21 . . . 36297 1748 1 For for IN 36297 1748 2 example example NN 36297 1748 3 , , , 36297 1748 4 Fig Fig NNP 36297 1748 5 . . . 36297 1749 1 65 65 CD 36297 1749 2 may may MD 36297 1749 3 be be VB 36297 1749 4 combined combine VBN 36297 1749 5 by by IN 36297 1749 6 means mean NNS 36297 1749 7 of of IN 36297 1749 8 double double JJ 36297 1749 9 images image NNS 36297 1749 10 ( ( -LRB- 36297 1749 11 produced produce VBN 36297 1749 12 by by IN 36297 1749 13 converging converge VBG 36297 1749 14 or or CC 36297 1749 15 diverging diverge VBG 36297 1749 16 the the DT 36297 1749 17 optical optical JJ 36297 1749 18 axes axis NNS 36297 1749 19 ) ) -RRB- 36297 1749 20 so so IN 36297 1749 21 that that IN 36297 1749 22 the the DT 36297 1749 23 two two CD 36297 1749 24 inner inner JJ 36297 1749 25 squares square NNS 36297 1749 26 are be VBP 36297 1749 27 coincident coincident JJ 36297 1749 28 . . . 36297 1750 1 Actual actual JJ 36297 1750 2 observation observation NN 36297 1750 3 is be VBZ 36297 1750 4 much much RB 36297 1750 5 more more RBR 36297 1750 6 satisfactory satisfactory JJ 36297 1750 7 than than IN 36297 1750 8 a a DT 36297 1750 9 detailed detailed JJ 36297 1750 10 description description NN 36297 1750 11 . . . 36297 1751 1 _ _ NNP 36297 1751 2 Miscellaneous._--There Miscellaneous._--There NNS 36297 1751 3 are be VBP 36297 1751 4 many many JJ 36297 1751 5 interesting interesting JJ 36297 1751 6 effects effect NNS 36297 1751 7 due due JJ 36297 1751 8 to to IN 36297 1751 9 diffraction diffraction NN 36297 1751 10 of of IN 36297 1751 11 light light NN 36297 1751 12 by by IN 36297 1751 13 edges edge NNS 36297 1751 14 of of IN 36297 1751 15 objects object NNS 36297 1751 16 , , , 36297 1751 17 by by IN 36297 1751 18 meshes mesh NNS 36297 1751 19 such such JJ 36297 1751 20 as as IN 36297 1751 21 a a DT 36297 1751 22 wire wire NN 36297 1751 23 screen screen NN 36297 1751 24 or or CC 36297 1751 25 a a DT 36297 1751 26 handkerchief handkerchief NN 36297 1751 27 , , , 36297 1751 28 by by IN 36297 1751 29 the the DT 36297 1751 30 eye eye NN 36297 1751 31 - - HYPH 36297 1751 32 media medium NNS 36297 1751 33 , , , 36297 1751 34 etc etc FW 36297 1751 35 . . . 36297 1752 1 On on IN 36297 1752 2 looking look VBG 36297 1752 3 at at IN 36297 1752 4 a a DT 36297 1752 5 very very RB 36297 1752 6 bright bright JJ 36297 1752 7 small small JJ 36297 1752 8 light light JJ 36297 1752 9 - - HYPH 36297 1752 10 source source NN 36297 1752 11 it -PRON- PRP 36297 1752 12 may may MD 36297 1752 13 be be VB 36297 1752 14 seen see VBN 36297 1752 15 to to TO 36297 1752 16 be be VB 36297 1752 17 surrounded surround VBN 36297 1752 18 by by IN 36297 1752 19 many many JJ 36297 1752 20 colors color NNS 36297 1752 21 . . . 36297 1753 1 Streamers streamer NNS 36297 1753 2 of of IN 36297 1753 3 light light NN 36297 1753 4 appear appear VBP 36297 1753 5 to to TO 36297 1753 6 radiate radiate VB 36297 1753 7 from from IN 36297 1753 8 brilliant brilliant JJ 36297 1753 9 sources source NNS 36297 1753 10 and and CC 36297 1753 11 all all DT 36297 1753 12 bright bright JJ 36297 1753 13 areas area NNS 36297 1753 14 colored color VBN 36297 1753 15 or or CC 36297 1753 16 colorless colorless NN 36297 1753 17 , , , 36297 1753 18 when when WRB 36297 1753 19 viewed view VBN 36297 1753 20 amid amid IN 36297 1753 21 dark dark JJ 36297 1753 22 surroundings surrounding NNS 36297 1753 23 , , , 36297 1753 24 appear appear VBP 36297 1753 25 to to TO 36297 1753 26 be be VB 36297 1753 27 surrounded surround VBN 36297 1753 28 by by IN 36297 1753 29 diffuse diffuse NN 36297 1753 30 brushes brush NNS 36297 1753 31 of of IN 36297 1753 32 light light NN 36297 1753 33 . . . 36297 1754 1 These these DT 36297 1754 2 brushes brush NNS 36297 1754 3 are be VBP 36297 1754 4 likely likely JJ 36297 1754 5 to to TO 36297 1754 6 be be VB 36297 1754 7 of of IN 36297 1754 8 a a DT 36297 1754 9 bluish bluish JJ 36297 1754 10 tint tint NN 36297 1754 11 . . . 36297 1755 1 Many many JJ 36297 1755 2 of of IN 36297 1755 3 these these DT 36297 1755 4 phenomena phenomenon NNS 36297 1755 5 are be VBP 36297 1755 6 readily readily RB 36297 1755 7 explained explain VBN 36297 1755 8 , , , 36297 1755 9 but but CC 36297 1755 10 this this DT 36297 1755 11 can can MD 36297 1755 12 not not RB 36297 1755 13 be be VB 36297 1755 14 done do VBN 36297 1755 15 safely safely RB 36297 1755 16 without without IN 36297 1755 17 knowing know VBG 36297 1755 18 or or CC 36297 1755 19 recognizing recognize VBG 36297 1755 20 all all DT 36297 1755 21 conditions condition NNS 36297 1755 22 . . . 36297 1756 1 Many many JJ 36297 1756 2 are be VBP 36297 1756 3 not not RB 36297 1756 4 easily easily RB 36297 1756 5 explained explain VBN 36297 1756 6 , , , 36297 1756 7 especially especially RB 36297 1756 8 when when WRB 36297 1756 9 reported report VBN 36297 1756 10 by by IN 36297 1756 11 others other NNS 36297 1756 12 , , , 36297 1756 13 who who WP 36297 1756 14 may may MD 36297 1756 15 not not RB 36297 1756 16 recognize recognize VB 36297 1756 17 certain certain JJ 36297 1756 18 important important JJ 36297 1756 19 conditions condition NNS 36297 1756 20 . . . 36297 1757 1 For for IN 36297 1757 2 example example NN 36297 1757 3 , , , 36297 1757 4 authentic authentic JJ 36297 1757 5 observers observer NNS 36297 1757 6 have have VBP 36297 1757 7 reported report VBN 36297 1757 8 that that IN 36297 1757 9 black black JJ 36297 1757 10 letters letter NNS 36297 1757 11 on on IN 36297 1757 12 white white JJ 36297 1757 13 paper paper NN 36297 1757 14 appeared appear VBD 36297 1757 15 vivid vivid JJ 36297 1757 16 red red NN 36297 1757 17 on on IN 36297 1757 18 a a DT 36297 1757 19 white white JJ 36297 1757 20 background background NN 36297 1757 21 , , , 36297 1757 22 under under IN 36297 1757 23 certain certain JJ 36297 1757 24 conditions condition NNS 36297 1757 25 . . . 36297 1758 1 Of of IN 36297 1758 2 the the DT 36297 1758 3 latter latter JJ 36297 1758 4 , , , 36297 1758 5 the the DT 36297 1758 6 apparently apparently RB 36297 1758 7 important important JJ 36297 1758 8 one one NN 36297 1758 9 was be VBD 36297 1758 10 " " `` 36297 1758 11 sun sun NNP 36297 1758 12 's 's POS 36297 1758 13 rays ray NNS 36297 1758 14 falling fall VBG 36297 1758 15 aslant aslant NN 36297 1758 16 the the DT 36297 1758 17 forehead forehead NN 36297 1758 18 . . . 36297 1758 19 " " '' 36297 1759 1 When when WRB 36297 1759 2 the the DT 36297 1759 3 eyes eye NNS 36297 1759 4 were be VBD 36297 1759 5 shaded shade VBN 36297 1759 6 with with IN 36297 1759 7 the the DT 36297 1759 8 hand hand NN 36297 1759 9 the the DT 36297 1759 10 letters letter NNS 36297 1759 11 immediately immediately RB 36297 1759 12 appeared appear VBD 36297 1759 13 black black JJ 36297 1759 14 as as IN 36297 1759 15 they -PRON- PRP 36297 1759 16 should should MD 36297 1759 17 . . . 36297 1760 1 The the DT 36297 1760 2 influence influence NN 36297 1760 3 of of IN 36297 1760 4 the the DT 36297 1760 5 color color NN 36297 1760 6 of of IN 36297 1760 7 an an DT 36297 1760 8 object object NN 36297 1760 9 upon upon IN 36297 1760 10 its -PRON- PRP$ 36297 1760 11 apparent apparent JJ 36297 1760 12 weight weight NN 36297 1760 13 is be VBZ 36297 1760 14 relatively relatively RB 36297 1760 15 slight slight JJ 36297 1760 16 , , , 36297 1760 17 but but CC 36297 1760 18 there there EX 36297 1760 19 is be VBZ 36297 1760 20 evidence evidence NN 36297 1760 21 of of IN 36297 1760 22 a a DT 36297 1760 23 tendency tendency NN 36297 1760 24 to to TO 36297 1760 25 judge judge VB 36297 1760 26 a a DT 36297 1760 27 red red JJ 36297 1760 28 or or CC 36297 1760 29 black black JJ 36297 1760 30 object object NN 36297 1760 31 to to TO 36297 1760 32 be be VB 36297 1760 33 slightly slightly RB 36297 1760 34 heavier heavy JJR 36297 1760 35 than than IN 36297 1760 36 a a DT 36297 1760 37 yellow yellow JJ 36297 1760 38 or or CC 36297 1760 39 blue blue JJ 36297 1760 40 object object NN 36297 1760 41 of of IN 36297 1760 42 the the DT 36297 1760 43 same same JJ 36297 1760 44 weight weight NN 36297 1760 45 . . . 36297 1761 1 It -PRON- PRP 36297 1761 2 appears appear VBZ 36297 1761 3 that that DT 36297 1761 4 hue hue NNP 36297 1761 5 is be VBZ 36297 1761 6 a a DT 36297 1761 7 minor minor JJ 36297 1761 8 factor factor NN 36297 1761 9 in in IN 36297 1761 10 influencing influence VBG 36297 1761 11 the the DT 36297 1761 12 judgment judgment NN 36297 1761 13 and and CC 36297 1761 14 that that IN 36297 1761 15 there there EX 36297 1761 16 is be VBZ 36297 1761 17 no no DT 36297 1761 18 correlation correlation NN 36297 1761 19 between between IN 36297 1761 20 the the DT 36297 1761 21 affective affective JJ 36297 1761 22 quality quality NN 36297 1761 23 of of IN 36297 1761 24 a a DT 36297 1761 25 color color NN 36297 1761 26 and and CC 36297 1761 27 its -PRON- PRP$ 36297 1761 28 influence influence NN 36297 1761 29 upon upon IN 36297 1761 30 apparent apparent JJ 36297 1761 31 weight weight NN 36297 1761 32 . . . 36297 1762 1 Although although IN 36297 1762 2 the the DT 36297 1762 3 scanty scanty NN 36297 1762 4 evidence evidence NN 36297 1762 5 available available JJ 36297 1762 6 attributes attribute NNS 36297 1762 7 but but CC 36297 1762 8 a a DT 36297 1762 9 slight slight JJ 36297 1762 10 influence influence NN 36297 1762 11 to to IN 36297 1762 12 color color NN 36297 1762 13 in in IN 36297 1762 14 this this DT 36297 1762 15 respect respect NN 36297 1762 16 , , , 36297 1762 17 it -PRON- PRP 36297 1762 18 is be VBZ 36297 1762 19 of of IN 36297 1762 20 interest interest NN 36297 1762 21 in in IN 36297 1762 22 passing pass VBG 36297 1762 23 as as IN 36297 1762 24 a a DT 36297 1762 25 reminder reminder NN 36297 1762 26 of of IN 36297 1762 27 the the DT 36297 1762 28 many many JJ 36297 1762 29 subtle subtle JJ 36297 1762 30 factors factor NNS 36297 1762 31 which which WDT 36297 1762 32 are be VBP 36297 1762 33 at at IN 36297 1762 34 work work NN 36297 1762 35 modifying modify VBG 36297 1762 36 our -PRON- PRP$ 36297 1762 37 judgments judgment NNS 36297 1762 38 . . . 36297 1763 1 X X NNS 36297 1763 2 LIGHTING light VBG 36297 1763 3 It -PRON- PRP 36297 1763 4 should should MD 36297 1763 5 be be VB 36297 1763 6 obvious obvious JJ 36297 1763 7 by by IN 36297 1763 8 this this DT 36297 1763 9 time time NN 36297 1763 10 that that WDT 36297 1763 11 the the DT 36297 1763 12 lighting lighting NN 36297 1763 13 of of IN 36297 1763 14 objects object NNS 36297 1763 15 or or CC 36297 1763 16 of of IN 36297 1763 17 a a DT 36297 1763 18 scene scene NN 36297 1763 19 can can MD 36297 1763 20 alone alone RB 36297 1763 21 produce produce VB 36297 1763 22 an an DT 36297 1763 23 illusion illusion NN 36297 1763 24 , , , 36297 1763 25 and and CC 36297 1763 26 that that IN 36297 1763 27 it -PRON- PRP 36297 1763 28 can can MD 36297 1763 29 in in IN 36297 1763 30 still still RB 36297 1763 31 more more JJR 36297 1763 32 cases case NNS 36297 1763 33 contribute contribute VBP 36297 1763 34 toward toward IN 36297 1763 35 an an DT 36297 1763 36 illusion illusion NN 36297 1763 37 . . . 36297 1764 1 Furthermore furthermore RB 36297 1764 2 , , , 36297 1764 3 there there EX 36297 1764 4 are be VBP 36297 1764 5 many many JJ 36297 1764 6 cases case NNS 36297 1764 7 of of IN 36297 1764 8 illusions illusion NNS 36297 1764 9 in in IN 36297 1764 10 lighting light VBG 36297 1764 11 due due IN 36297 1764 12 to to IN 36297 1764 13 brightness brightness NN 36297 1764 14 and and CC 36297 1764 15 color color NN 36297 1764 16 . . . 36297 1765 1 Many many JJ 36297 1765 2 effects effect NNS 36297 1765 3 of of IN 36297 1765 4 lighting lighting NN 36297 1765 5 have have VBP 36297 1765 6 been be VBN 36297 1765 7 described describe VBN 36297 1765 8 elsewhere elsewhere RB 36297 1765 9 with with IN 36297 1765 10 detailed detailed JJ 36297 1765 11 analyses analysis NNS 36297 1765 12 of of IN 36297 1765 13 the the DT 36297 1765 14 underlying underlie VBG 36297 1765 15 principles principle NNS 36297 1765 16 , , , 36297 1765 17 but but CC 36297 1765 18 a a DT 36297 1765 19 condensed condense VBN 36297 1765 20 survey survey NN 36297 1765 21 applying apply VBG 36297 1765 22 particularly particularly RB 36297 1765 23 to to IN 36297 1765 24 illusions illusion NNS 36297 1765 25 will will MD 36297 1765 26 be be VB 36297 1765 27 presented present VBN 36297 1765 28 here here RB 36297 1765 29 . . . 36297 1766 1 The the DT 36297 1766 2 comparison comparison NN 36297 1766 3 of of IN 36297 1766 4 intaglio intaglio NN 36297 1766 5 with with IN 36297 1766 6 low low JJ 36297 1766 7 relief relief NN 36297 1766 8 has have VBZ 36297 1766 9 been be VBN 36297 1766 10 mentioned mention VBN 36297 1766 11 several several JJ 36297 1766 12 times time NNS 36297 1766 13 in in IN 36297 1766 14 preceding precede VBG 36297 1766 15 chapters chapter NNS 36297 1766 16 . . . 36297 1767 1 Examples example NNS 36297 1767 2 of of IN 36297 1767 3 these these DT 36297 1767 4 as as IN 36297 1767 5 related relate VBN 36297 1767 6 to to IN 36297 1767 7 lighting lighting NN 36297 1767 8 are be VBP 36297 1767 9 found find VBN 36297 1767 10 in in IN 36297 1767 11 Figs Figs NNP 36297 1767 12 . . . 36297 1768 1 70 70 CD 36297 1768 2 to to TO 36297 1768 3 73 73 CD 36297 1768 4 . . . 36297 1769 1 Fig fig NN 36297 1769 2 . . . 36297 1770 1 70 70 CD 36297 1770 2 represents represent VBZ 36297 1770 3 a a DT 36297 1770 4 bas bas NN 36297 1770 5 - - HYPH 36297 1770 6 relief relief NN 36297 1770 7 lighted light VBN 36297 1770 8 from from IN 36297 1770 9 above above RB 36297 1770 10 and and CC 36297 1770 11 Fig Fig NNP 36297 1770 12 . . . 36297 1771 1 71 71 CD 36297 1771 2 would would MD 36297 1771 3 ordinarily ordinarily RB 36297 1771 4 be be VB 36297 1771 5 taken take VBN 36297 1771 6 to to TO 36297 1771 7 represent represent VB 36297 1771 8 a a DT 36297 1771 9 bas bas NN 36297 1771 10 - - HYPH 36297 1771 11 relief relief NN 36297 1771 12 lighted light VBN 36297 1771 13 from from IN 36297 1771 14 below below RB 36297 1771 15 . . . 36297 1772 1 However however RB 36297 1772 2 , , , 36297 1772 3 the the DT 36297 1772 4 latter latter NN 36297 1772 5 was be VBD 36297 1772 6 made make VBN 36297 1772 7 from from IN 36297 1772 8 a a DT 36297 1772 9 photograph photograph NN 36297 1772 10 of of IN 36297 1772 11 the the DT 36297 1772 12 mold mold NN 36297 1772 13 ( ( -LRB- 36297 1772 14 intaglio intaglio NN 36297 1772 15 ) ) -RRB- 36297 1772 16 from from IN 36297 1772 17 which which WDT 36297 1772 18 the the DT 36297 1772 19 bas bas NN 36297 1772 20 - - HYPH 36297 1772 21 relief relief NN 36297 1772 22 was be VBD 36297 1772 23 made make VBN 36297 1772 24 and and CC 36297 1772 25 Fig fig NN 36297 1772 26 . . . 36297 1773 1 71 71 CD 36297 1773 2 really really RB 36297 1773 3 represents represent VBZ 36297 1773 4 an an DT 36297 1773 5 intaglio intaglio NN 36297 1773 6 lighted light VBN 36297 1773 7 from from IN 36297 1773 8 above above RB 36297 1773 9 . . . 36297 1774 1 Similarly similarly RB 36297 1774 2 Fig Fig NNP 36297 1774 3 . . . 36297 1775 1 72 72 CD 36297 1775 2 represents represent VBZ 36297 1775 3 the the DT 36297 1775 4 bas bas NN 36297 1775 5 - - HYPH 36297 1775 6 relief relief NN 36297 1775 7 lighted light VBN 36297 1775 8 from from IN 36297 1775 9 the the DT 36297 1775 10 left left NN 36297 1775 11 and and CC 36297 1775 12 Fig fig NN 36297 1775 13 . . . 36297 1776 1 73 73 CD 36297 1776 2 ordinarily ordinarily RB 36297 1776 3 would would MD 36297 1776 4 be be VB 36297 1776 5 taken take VBN 36297 1776 6 to to TO 36297 1776 7 be be VB 36297 1776 8 a a DT 36297 1776 9 bas bas NN 36297 1776 10 - - HYPH 36297 1776 11 relief relief NN 36297 1776 12 lighted light VBN 36297 1776 13 from from IN 36297 1776 14 the the DT 36297 1776 15 right right NN 36297 1776 16 . . . 36297 1777 1 However however RB 36297 1777 2 , , , 36297 1777 3 Fig Fig NNP 36297 1777 4 . . . 36297 1778 1 73 73 CD 36297 1778 2 was be VBD 36297 1778 3 made make VBN 36297 1778 4 from from IN 36297 1778 5 a a DT 36297 1778 6 photograph photograph NN 36297 1778 7 of of IN 36297 1778 8 an an DT 36297 1778 9 intaglio intaglio NN 36297 1778 10 lighted light VBN 36297 1778 11 from from IN 36297 1778 12 the the DT 36297 1778 13 left left NN 36297 1778 14 . . . 36297 1779 1 These these DT 36297 1779 2 amply amply RB 36297 1779 3 demonstrate demonstrate VBP 36297 1779 4 the the DT 36297 1779 5 effect effect NN 36297 1779 6 of of IN 36297 1779 7 lighting lighting NN 36297 1779 8 as as IN 36297 1779 9 an an DT 36297 1779 10 influence influence NN 36297 1779 11 upon upon IN 36297 1779 12 the the DT 36297 1779 13 appearance appearance NN 36297 1779 14 of of IN 36297 1779 15 objects object NNS 36297 1779 16 and and CC 36297 1779 17 they -PRON- PRP 36297 1779 18 indicate indicate VBP 36297 1779 19 the the DT 36297 1779 20 importance importance NN 36297 1779 21 of of IN 36297 1779 22 correct correct JJ 36297 1779 23 assumptions assumption NNS 36297 1779 24 in in IN 36297 1779 25 arriving arrive VBG 36297 1779 26 at at IN 36297 1779 27 a a DT 36297 1779 28 correct correct JJ 36297 1779 29 judgment judgment NN 36297 1779 30 . . . 36297 1780 1 In in IN 36297 1780 2 these these DT 36297 1780 3 cases case NNS 36297 1780 4 the the DT 36297 1780 5 concealment concealment NN 36297 1780 6 of of IN 36297 1780 7 the the DT 36297 1780 8 light light JJ 36297 1780 9 - - HYPH 36297 1780 10 source source NN 36297 1780 11 and and CC 36297 1780 12 the the DT 36297 1780 13 commonness commonness NN 36297 1780 14 of of IN 36297 1780 15 bas bas NN 36297 1780 16 - - HYPH 36297 1780 17 relief relief NN 36297 1780 18 as as IN 36297 1780 19 compared compare VBN 36297 1780 20 with with IN 36297 1780 21 intaglio intaglio NN 36297 1780 22 are be VBP 36297 1780 23 the the DT 36297 1780 24 causes cause NNS 36297 1780 25 for for IN 36297 1780 26 the the DT 36297 1780 27 illusion illusion NN 36297 1780 28 or or CC 36297 1780 29 the the DT 36297 1780 30 error error NN 36297 1780 31 in in IN 36297 1780 32 judgment judgment NN 36297 1780 33 . . . 36297 1781 1 Certainly certainly RB 36297 1781 2 in in IN 36297 1781 3 these these DT 36297 1781 4 cases case NNS 36297 1781 5 the the DT 36297 1781 6 visual visual JJ 36297 1781 7 sense sense NN 36297 1781 8 delivers deliver VBZ 36297 1781 9 its -PRON- PRP$ 36297 1781 10 data datum NNS 36297 1781 11 correctly correctly RB 36297 1781 12 . . . 36297 1782 1 [ [ -LRB- 36297 1782 2 Illustration illustration NN 36297 1782 3 : : : 36297 1782 4 Fig Fig NNP 36297 1782 5 . . . 36297 1783 1 70.--A 70.--A NNP 36297 1783 2 bas bas NN 36297 1783 3 - - HYPH 36297 1783 4 relief relief NN 36297 1783 5 lighted light VBN 36297 1783 6 from from IN 36297 1783 7 above above RB 36297 1783 8 . . . 36297 1783 9 ] ] -RRB- 36297 1784 1 [ [ -LRB- 36297 1784 2 Illustration illustration NN 36297 1784 3 : : : 36297 1784 4 Fig Fig NNP 36297 1784 5 . . . 36297 1785 1 71.--An 71.--an CD 36297 1785 2 intaglio intaglio NN 36297 1785 3 lighted light VBN 36297 1785 4 from from IN 36297 1785 5 above above RB 36297 1785 6 . . . 36297 1785 7 ] ] -RRB- 36297 1786 1 [ [ -LRB- 36297 1786 2 Illustration illustration NN 36297 1786 3 : : : 36297 1786 4 Fig Fig NNP 36297 1786 5 . . . 36297 1787 1 72.--A 72.--A NNP 36297 1787 2 bas bas NN 36297 1787 3 - - HYPH 36297 1787 4 relief relief NN 36297 1787 5 lighted light VBN 36297 1787 6 from from IN 36297 1787 7 the the DT 36297 1787 8 left left NN 36297 1787 9 . . . 36297 1787 10 ] ] -RRB- 36297 1788 1 [ [ -LRB- 36297 1788 2 Illustration illustration NN 36297 1788 3 : : : 36297 1788 4 Fig Fig NNP 36297 1788 5 . . . 36297 1789 1 73.--An 73.--an CD 36297 1789 2 intaglio intaglio NN 36297 1789 3 lighted light VBN 36297 1789 4 from from IN 36297 1789 5 the the DT 36297 1789 6 left left NN 36297 1789 7 . . . 36297 1789 8 ] ] -RRB- 36297 1790 1 [ [ -LRB- 36297 1790 2 Illustration illustration NN 36297 1790 3 : : : 36297 1790 4 Fig Fig NNP 36297 1790 5 . . . 36297 1791 1 74.--_a 74.--_a CD 36297 1791 2 . . . 36297 1791 3 _ _ NNP 36297 1791 4 A a DT 36297 1791 5 disk disk NN 36297 1791 6 ( ( -LRB- 36297 1791 7 above above RB 36297 1791 8 ) ) -RRB- 36297 1791 9 and and CC 36297 1791 10 a a DT 36297 1791 11 sphere sphere NN 36297 1791 12 ( ( -LRB- 36297 1791 13 below below RB 36297 1791 14 ) ) -RRB- 36297 1791 15 lighted light VBN 36297 1791 16 from from IN 36297 1791 17 overhead overhead NN 36297 1791 18 . . . 36297 1792 1 _ _ NNP 36297 1792 2 b. b. NN 36297 1792 3 _ _ NNP 36297 1792 4 A a DT 36297 1792 5 disk disk NN 36297 1792 6 and and CC 36297 1792 7 a a DT 36297 1792 8 sphere sphere NN 36297 1792 9 lighted light VBN 36297 1792 10 by by IN 36297 1792 11 perfectly perfectly RB 36297 1792 12 diffused diffuse VBN 36297 1792 13 light light NN 36297 1792 14 . . . 36297 1792 15 ] ] -RRB- 36297 1793 1 In in IN 36297 1793 2 Fig Fig NNP 36297 1793 3 . . . 36297 1794 1 74 74 CD 36297 1794 2 the the DT 36297 1794 3 upper upper JJ 36297 1794 4 object object NN 36297 1794 5 is be VBZ 36297 1794 6 a a DT 36297 1794 7 disk disk NN 36297 1794 8 and and CC 36297 1794 9 the the DT 36297 1794 10 lower low JJR 36297 1794 11 is be VBZ 36297 1794 12 a a DT 36297 1794 13 sphere sphere NN 36297 1794 14 . . . 36297 1795 1 In in IN 36297 1795 2 _ _ NNP 36297 1795 3 a a DT 36297 1795 4 _ _ NNP 36297 1795 5 Fig Fig NNP 36297 1795 6 . . . 36297 1796 1 74 74 CD 36297 1796 2 the the DT 36297 1796 3 lighting lighting NN 36297 1796 4 is be VBZ 36297 1796 5 due due JJ 36297 1796 6 to to IN 36297 1796 7 a a DT 36297 1796 8 source source NN 36297 1796 9 of of IN 36297 1796 10 light light NN 36297 1796 11 of of IN 36297 1796 12 rather rather RB 36297 1796 13 small small JJ 36297 1796 14 physical physical JJ 36297 1796 15 dimensions dimension NNS 36297 1796 16 directly directly RB 36297 1796 17 above above IN 36297 1796 18 the the DT 36297 1796 19 objects object NNS 36297 1796 20 . . . 36297 1797 1 The the DT 36297 1797 2 same same JJ 36297 1797 3 objects object NNS 36297 1797 4 illuminated illuminate VBN 36297 1797 5 by by IN 36297 1797 6 means mean NNS 36297 1797 7 of of IN 36297 1797 8 highly highly RB 36297 1797 9 diffused diffuse VBN 36297 1797 10 light light NN 36297 1797 11 ( ( -LRB- 36297 1797 12 that that RB 36297 1797 13 is is RB 36297 1797 14 , , , 36297 1797 15 light light JJ 36297 1797 16 from from IN 36297 1797 17 many many JJ 36297 1797 18 directions direction NNS 36297 1797 19 and and CC 36297 1797 20 of of IN 36297 1797 21 uniform uniform JJ 36297 1797 22 intensity intensity NN 36297 1797 23 ) ) -RRB- 36297 1797 24 appear appear VBP 36297 1797 25 as as IN 36297 1797 26 in in IN 36297 1797 27 _ _ NNP 36297 1797 28 b b NNP 36297 1797 29 _ _ NNP 36297 1797 30 . . . 36297 1798 1 Both both DT 36297 1798 2 objects object NNS 36297 1798 3 now now RB 36297 1798 4 appear appear VBP 36297 1798 5 as as IN 36297 1798 6 disks disk NNS 36297 1798 7 . . . 36297 1799 1 It -PRON- PRP 36297 1799 2 is be VBZ 36297 1799 3 obvious obvious JJ 36297 1799 4 that that IN 36297 1799 5 under under IN 36297 1799 6 appropriate appropriate JJ 36297 1799 7 lighting lighting NN 36297 1799 8 a a DT 36297 1799 9 disk disk NN 36297 1799 10 might may MD 36297 1799 11 be be VB 36297 1799 12 taken take VBN 36297 1799 13 for for IN 36297 1799 14 a a DT 36297 1799 15 sphere sphere NN 36297 1799 16 and and CC 36297 1799 17 vice vice NN 36297 1799 18 versa versa RB 36297 1799 19 , , , 36297 1799 20 depending depend VBG 36297 1799 21 upon upon IN 36297 1799 22 which which WDT 36297 1799 23 dominates dominate VBZ 36297 1799 24 the the DT 36297 1799 25 judgment judgment NN 36297 1799 26 or or CC 36297 1799 27 upon upon IN 36297 1799 28 the the DT 36297 1799 29 formulation formulation NN 36297 1799 30 of of IN 36297 1799 31 the the DT 36297 1799 32 attendant attendant JJ 36297 1799 33 assumptions assumption NNS 36297 1799 34 . . . 36297 1800 1 Incidentally incidentally RB 36297 1800 2 an an DT 36297 1800 3 appearance appearance NN 36297 1800 4 quite quite RB 36297 1800 5 similar similar JJ 36297 1800 6 to to IN 36297 1800 7 that that DT 36297 1800 8 of of IN 36297 1800 9 _ _ NNP 36297 1800 10 a a DT 36297 1800 11 _ _ NNP 36297 1800 12 , , , 36297 1800 13 Fig Fig NNP 36297 1800 14 . . . 36297 1801 1 74 74 CD 36297 1801 2 is be VBZ 36297 1801 3 obtained obtain VBN 36297 1801 4 when when WRB 36297 1801 5 the the DT 36297 1801 6 light light NN 36297 1801 7 - - HYPH 36297 1801 8 source source NN 36297 1801 9 is be VBZ 36297 1801 10 near near IN 36297 1801 11 the the DT 36297 1801 12 observer observer NN 36297 1801 13 ; ; : 36297 1801 14 that that RB 36297 1801 15 is is RB 36297 1801 16 , , , 36297 1801 17 when when WRB 36297 1801 18 it -PRON- PRP 36297 1801 19 lies lie VBZ 36297 1801 20 near near IN 36297 1801 21 the the DT 36297 1801 22 line line NN 36297 1801 23 of of IN 36297 1801 24 sight sight NN 36297 1801 25 . . . 36297 1802 1 [ [ -LRB- 36297 1802 2 Illustration illustration NN 36297 1802 3 : : : 36297 1802 4 Fig Fig NNP 36297 1802 5 . . . 36297 1803 1 75.--A 75.--A NNP 36297 1803 2 concave concave NNP 36297 1803 3 hemispherical hemispherical NNP 36297 1803 4 cup cup NNP 36297 1803 5 on on IN 36297 1803 6 the the DT 36297 1803 7 left left NN 36297 1803 8 and and CC 36297 1803 9 a a DT 36297 1803 10 convex convex NNS 36297 1803 11 hemisphere hemisphere NN 36297 1803 12 on on IN 36297 1803 13 the the DT 36297 1803 14 right right NN 36297 1803 15 lighted light VBN 36297 1803 16 by by IN 36297 1803 17 a a DT 36297 1803 18 light light JJ 36297 1803 19 - - HYPH 36297 1803 20 source source NN 36297 1803 21 of of IN 36297 1803 22 large large JJ 36297 1803 23 angle angle NN 36297 1803 24 such such JJ 36297 1803 25 as as IN 36297 1803 26 a a DT 36297 1803 27 window window NN 36297 1803 28 . . . 36297 1803 29 ] ] -RRB- 36297 1804 1 Somewhat somewhat RB 36297 1804 2 similar similar JJ 36297 1804 3 to to IN 36297 1804 4 the the DT 36297 1804 5 confusion confusion NN 36297 1804 6 of of IN 36297 1804 7 intaglio intaglio NN 36297 1804 8 with with IN 36297 1804 9 bas bas NN 36297 1804 10 - - HYPH 36297 1804 11 relief relief NN 36297 1804 12 is be VBZ 36297 1804 13 the the DT 36297 1804 14 confusion confusion NN 36297 1804 15 of of IN 36297 1804 16 the the DT 36297 1804 17 two two CD 36297 1804 18 hemispherical hemispherical JJ 36297 1804 19 objects object NNS 36297 1804 20 illustrated illustrate VBN 36297 1804 21 in in IN 36297 1804 22 Fig Fig NNP 36297 1804 23 . . . 36297 1805 1 75 75 CD 36297 1805 2 . . . 36297 1806 1 The the DT 36297 1806 2 one one NN 36297 1806 3 on on IN 36297 1806 4 the the DT 36297 1806 5 left left NN 36297 1806 6 is be VBZ 36297 1806 7 concave concave NNP 36297 1806 8 toward toward IN 36297 1806 9 the the DT 36297 1806 10 observer observer NN 36297 1806 11 . . . 36297 1807 1 In in IN 36297 1807 2 other other JJ 36297 1807 3 words word NNS 36297 1807 4 , , , 36297 1807 5 both both DT 36297 1807 6 could could MD 36297 1807 7 be be VB 36297 1807 8 hemispherical hemispherical JJ 36297 1807 9 shells shell NNS 36297 1807 10 -- -- : 36297 1807 11 one one PRP 36297 1807 12 a a DT 36297 1807 13 mold mold NN 36297 1807 14 for for IN 36297 1807 15 the the DT 36297 1807 16 other other JJ 36297 1807 17 . . . 36297 1808 1 Under under IN 36297 1808 2 the the DT 36297 1808 3 lighting lighting NN 36297 1808 4 which which WDT 36297 1808 5 existed exist VBD 36297 1808 6 when when WRB 36297 1808 7 the the DT 36297 1808 8 original original JJ 36297 1808 9 photographs photograph NNS 36297 1808 10 were be VBD 36297 1808 11 made make VBN 36297 1808 12 they -PRON- PRP 36297 1808 13 could could MD 36297 1808 14 both both DT 36297 1808 15 be be VB 36297 1808 16 taken take VBN 36297 1808 17 for for IN 36297 1808 18 hemispheres hemisphere NNS 36297 1808 19 . . . 36297 1809 1 The the DT 36297 1809 2 lighting lighting NN 36297 1809 3 was be VBD 36297 1809 4 due due JJ 36297 1809 5 to to IN 36297 1809 6 a a DT 36297 1809 7 large large JJ 36297 1809 8 light light NN 36297 1809 9 - - HYPH 36297 1809 10 source source NN 36297 1809 11 at at IN 36297 1809 12 the the DT 36297 1809 13 left left NN 36297 1809 14 , , , 36297 1809 15 but but CC 36297 1809 16 if if IN 36297 1809 17 the the DT 36297 1809 18 object object NN 36297 1809 19 on on IN 36297 1809 20 the the DT 36297 1809 21 left left NN 36297 1809 22 is be VBZ 36297 1809 23 assumed assume VBN 36297 1809 24 ( ( -LRB- 36297 1809 25 incorrectly incorrectly RB 36297 1809 26 ) ) -RRB- 36297 1809 27 to to TO 36297 1809 28 be be VB 36297 1809 29 a a DT 36297 1809 30 hemisphere hemisphere NNP 36297 1809 31 convex convex NNP 36297 1809 32 toward toward IN 36297 1809 33 the the DT 36297 1809 34 observer observer NN 36297 1809 35 or or CC 36297 1809 36 a a DT 36297 1809 37 sphere sphere NN 36297 1809 38 , , , 36297 1809 39 it -PRON- PRP 36297 1809 40 must must MD 36297 1809 41 be be VB 36297 1809 42 considered consider VBN 36297 1809 43 to to TO 36297 1809 44 be be VB 36297 1809 45 lighted light VBN 36297 1809 46 from from IN 36297 1809 47 the the DT 36297 1809 48 right right NN 36297 1809 49 , , , 36297 1809 50 which which WDT 36297 1809 51 is be VBZ 36297 1809 52 also also RB 36297 1809 53 an an DT 36297 1809 54 incorrect incorrect JJ 36297 1809 55 assumption assumption NN 36297 1809 56 . . . 36297 1810 1 Obviously obviously RB 36297 1810 2 , , , 36297 1810 3 if if IN 36297 1810 4 the the DT 36297 1810 5 direction direction NN 36297 1810 6 of of IN 36297 1810 7 the the DT 36297 1810 8 dominant dominant JJ 36297 1810 9 light light NN 36297 1810 10 is be VBZ 36297 1810 11 clear clear JJ 36297 1810 12 to to IN 36297 1810 13 the the DT 36297 1810 14 observer observer NN 36297 1810 15 , , , 36297 1810 16 he -PRON- PRP 36297 1810 17 is be VBZ 36297 1810 18 not not RB 36297 1810 19 likely likely JJ 36297 1810 20 to to TO 36297 1810 21 make make VB 36297 1810 22 the the DT 36297 1810 23 error error NN 36297 1810 24 in in IN 36297 1810 25 judgment judgment NN 36297 1810 26 . . . 36297 1811 1 Incidentally incidentally RB 36297 1811 2 the the DT 36297 1811 3 object object NN 36297 1811 4 on on IN 36297 1811 5 the the DT 36297 1811 6 right right NN 36297 1811 7 might may MD 36297 1811 8 be be VB 36297 1811 9 assumed assume VBN 36297 1811 10 to to TO 36297 1811 11 be be VB 36297 1811 12 a a DT 36297 1811 13 sphere sphere NN 36297 1811 14 because because IN 36297 1811 15 a a DT 36297 1811 16 sphere sphere NN 36297 1811 17 is be VBZ 36297 1811 18 more more RBR 36297 1811 19 commonly commonly RB 36297 1811 20 encountered encounter VBN 36297 1811 21 than than IN 36297 1811 22 a a DT 36297 1811 23 hemisphere hemisphere NN 36297 1811 24 . . . 36297 1812 1 [ [ -LRB- 36297 1812 2 Illustration illustration NN 36297 1812 3 : : : 36297 1812 4 Fig Fig NNP 36297 1812 5 . . . 36297 1813 1 76.--The 76.--the RB 36297 1813 2 same same JJ 36297 1813 3 as as IN 36297 1813 4 Fig Fig NNP 36297 1813 5 . . . 36297 1814 1 75 75 CD 36297 1814 2 , , , 36297 1814 3 but but CC 36297 1814 4 lighted light VBN 36297 1814 5 by by IN 36297 1814 6 a a DT 36297 1814 7 very very RB 36297 1814 8 small small JJ 36297 1814 9 light light JJ 36297 1814 10 - - HYPH 36297 1814 11 source source NN 36297 1814 12 . . . 36297 1814 13 ] ] -RRB- 36297 1815 1 The the DT 36297 1815 2 same same JJ 36297 1815 3 objects object NNS 36297 1815 4 are be VBP 36297 1815 5 represented represent VBN 36297 1815 6 in in IN 36297 1815 7 Fig Fig NNP 36297 1815 8 . . . 36297 1816 1 76 76 CD 36297 1816 2 lighted light VBD 36297 1816 3 from from IN 36297 1816 4 the the DT 36297 1816 5 left left NN 36297 1816 6 by by IN 36297 1816 7 means mean NNS 36297 1816 8 of of IN 36297 1816 9 a a DT 36297 1816 10 light light JJ 36297 1816 11 - - HYPH 36297 1816 12 source source NN 36297 1816 13 of of IN 36297 1816 14 relatively relatively RB 36297 1816 15 small small JJ 36297 1816 16 dimensions dimension NNS 36297 1816 17 ; ; : 36297 1816 18 that that RB 36297 1816 19 is is RB 36297 1816 20 , , , 36297 1816 21 a a DT 36297 1816 22 source source NN 36297 1816 23 subtending subtend VBG 36297 1816 24 a a DT 36297 1816 25 relatively relatively RB 36297 1816 26 small small JJ 36297 1816 27 solid solid JJ 36297 1816 28 - - HYPH 36297 1816 29 angle angle NN 36297 1816 30 at at IN 36297 1816 31 the the DT 36297 1816 32 objects object NNS 36297 1816 33 . . . 36297 1817 1 In in IN 36297 1817 2 this this DT 36297 1817 3 case case NN 36297 1817 4 the the DT 36297 1817 5 sharp sharp JJ 36297 1817 6 shadow shadow NN 36297 1817 7 due due IN 36297 1817 8 to to IN 36297 1817 9 the the DT 36297 1817 10 edge edge NN 36297 1817 11 of of IN 36297 1817 12 the the DT 36297 1817 13 hemispherical hemispherical JJ 36297 1817 14 cup cup NN 36297 1817 15 ( ( -LRB- 36297 1817 16 on on IN 36297 1817 17 the the DT 36297 1817 18 left left NN 36297 1817 19 ) ) -RRB- 36297 1817 20 is be VBZ 36297 1817 21 likely likely JJ 36297 1817 22 to to TO 36297 1817 23 cause cause VB 36297 1817 24 the the DT 36297 1817 25 observer observer NN 36297 1817 26 to to TO 36297 1817 27 inquire inquire VB 36297 1817 28 further further RB 36297 1817 29 before before IN 36297 1817 30 submitting submit VBG 36297 1817 31 his -PRON- PRP$ 36297 1817 32 judgment judgment NN 36297 1817 33 . . . 36297 1818 1 The the DT 36297 1818 2 more more RBR 36297 1818 3 gradual gradual JJ 36297 1818 4 modulation modulation NN 36297 1818 5 of of IN 36297 1818 6 light light NN 36297 1818 7 and and CC 36297 1818 8 shade shade NN 36297 1818 9 as as IN 36297 1818 10 in in IN 36297 1818 11 the the DT 36297 1818 12 case case NN 36297 1818 13 of of IN 36297 1818 14 a a DT 36297 1818 15 sphere sphere NN 36297 1818 16 or or CC 36297 1818 17 a a DT 36297 1818 18 hemisphere hemisphere NNP 36297 1818 19 convex convex NNP 36297 1818 20 toward toward IN 36297 1818 21 the the DT 36297 1818 22 observer observer NN 36297 1818 23 is be VBZ 36297 1818 24 not not RB 36297 1818 25 present present JJ 36297 1818 26 in in IN 36297 1818 27 the the DT 36297 1818 28 case case NN 36297 1818 29 of of IN 36297 1818 30 the the DT 36297 1818 31 cup cup NN 36297 1818 32 . . . 36297 1819 1 This this DT 36297 1819 2 should should MD 36297 1819 3 be be VB 36297 1819 4 sufficient sufficient JJ 36297 1819 5 information information NN 36297 1819 6 for for IN 36297 1819 7 the the DT 36297 1819 8 careful careful JJ 36297 1819 9 observer observer NN 36297 1819 10 to to TO 36297 1819 11 guide guide VB 36297 1819 12 him -PRON- PRP 36297 1819 13 , , , 36297 1819 14 or or CC 36297 1819 15 at at IN 36297 1819 16 least least JJS 36297 1819 17 to to TO 36297 1819 18 prevent prevent VB 36297 1819 19 him -PRON- PRP 36297 1819 20 from from IN 36297 1819 21 arriving arrive VBG 36297 1819 22 at at IN 36297 1819 23 the the DT 36297 1819 24 definite definite JJ 36297 1819 25 conclusion conclusion NN 36297 1819 26 that that IN 36297 1819 27 the the DT 36297 1819 28 left left JJ 36297 1819 29 - - HYPH 36297 1819 30 hand hand NN 36297 1819 31 object object NN 36297 1819 32 is be VBZ 36297 1819 33 a a DT 36297 1819 34 hemisphere hemisphere NN 36297 1819 35 with with IN 36297 1819 36 its -PRON- PRP$ 36297 1819 37 convex convex NNP 36297 1819 38 side side NN 36297 1819 39 toward toward IN 36297 1819 40 him -PRON- PRP 36297 1819 41 . . . 36297 1820 1 Furthermore furthermore RB 36297 1820 2 it -PRON- PRP 36297 1820 3 should should MD 36297 1820 4 be be VB 36297 1820 5 noted note VBN 36297 1820 6 that that IN 36297 1820 7 we -PRON- PRP 36297 1820 8 often often RB 36297 1820 9 jump jump VBP 36297 1820 10 at at IN 36297 1820 11 the the DT 36297 1820 12 conclusion conclusion NN 36297 1820 13 that that IN 36297 1820 14 an an DT 36297 1820 15 object object NN 36297 1820 16 is be VBZ 36297 1820 17 a a DT 36297 1820 18 sphere sphere NN 36297 1820 19 even even RB 36297 1820 20 though though IN 36297 1820 21 we -PRON- PRP 36297 1820 22 see see VBP 36297 1820 23 with with IN 36297 1820 24 one one CD 36297 1820 25 eye eye NN 36297 1820 26 practically practically RB 36297 1820 27 only only RB 36297 1820 28 a a DT 36297 1820 29 hemisphere hemisphere NN 36297 1820 30 and and CC 36297 1820 31 with with IN 36297 1820 32 two two CD 36297 1820 33 eyes eye NNS 36297 1820 34 hardly hardly RB 36297 1820 35 enough enough RB 36297 1820 36 more more JJR 36297 1820 37 to to TO 36297 1820 38 justify justify VB 36297 1820 39 such such PDT 36297 1820 40 a a DT 36297 1820 41 conclusion conclusion NN 36297 1820 42 . . . 36297 1821 1 However however RB 36297 1821 2 , , , 36297 1821 3 spheres sphere NNS 36297 1821 4 are be VBP 36297 1821 5 more more RBR 36297 1821 6 commonly commonly RB 36297 1821 7 encountered encounter VBN 36297 1821 8 than than IN 36297 1821 9 hemispheres hemisphere NNS 36297 1821 10 , , , 36297 1821 11 so so CC 36297 1821 12 we -PRON- PRP 36297 1821 13 take take VBP 36297 1821 14 a a DT 36297 1821 15 chance chance NN 36297 1821 16 without without IN 36297 1821 17 really really RB 36297 1821 18 admitting admit VBG 36297 1821 19 or or CC 36297 1821 20 even even RB 36297 1821 21 recognizing recognize VBG 36297 1821 22 that that IN 36297 1821 23 we -PRON- PRP 36297 1821 24 do do VBP 36297 1821 25 . . . 36297 1822 1 The the DT 36297 1822 2 foregoing foregoing NN 36297 1822 3 figures figure NNS 36297 1822 4 illustrate illustrate VBP 36297 1822 5 several several JJ 36297 1822 6 phases phase NNS 36297 1822 7 which which WDT 36297 1822 8 influence influence VBP 36297 1822 9 our -PRON- PRP$ 36297 1822 10 judgments judgment NNS 36297 1822 11 and and CC 36297 1822 12 the the DT 36297 1822 13 wonder wonder NN 36297 1822 14 is be VBZ 36297 1822 15 that that IN 36297 1822 16 we -PRON- PRP 36297 1822 17 do do VBP 36297 1822 18 not not RB 36297 1822 19 make make VB 36297 1822 20 more more JJR 36297 1822 21 errors error NNS 36297 1822 22 than than IN 36297 1822 23 we -PRON- PRP 36297 1822 24 do do VBP 36297 1822 25 . . . 36297 1823 1 Of of RB 36297 1823 2 course course RB 36297 1823 3 , , , 36297 1823 4 experience experience NN 36297 1823 5 plays play VBZ 36297 1823 6 a a DT 36297 1823 7 large large JJ 36297 1823 8 part part NN 36297 1823 9 and and CC 36297 1823 10 fortunately fortunately RB 36297 1823 11 experience experience NN 36297 1823 12 can can MD 36297 1823 13 be be VB 36297 1823 14 depended depend VBN 36297 1823 15 upon upon IN 36297 1823 16 in in IN 36297 1823 17 most most JJS 36297 1823 18 cases case NNS 36297 1823 19 ; ; : 36297 1823 20 however however RB 36297 1823 21 , , , 36297 1823 22 in in IN 36297 1823 23 the the DT 36297 1823 24 other other JJ 36297 1823 25 cases case NNS 36297 1823 26 it -PRON- PRP 36297 1823 27 leads lead VBZ 36297 1823 28 us -PRON- PRP 36297 1823 29 astray astray RB 36297 1823 30 to to IN 36297 1823 31 a a DT 36297 1823 32 greater great JJR 36297 1823 33 extent extent NN 36297 1823 34 than than IN 36297 1823 35 if if IN 36297 1823 36 we -PRON- PRP 36297 1823 37 had have VBD 36297 1823 38 less less JJR 36297 1823 39 of of IN 36297 1823 40 it -PRON- PRP 36297 1823 41 . . . 36297 1824 1 The the DT 36297 1824 2 photographer photographer NN 36297 1824 3 , , , 36297 1824 4 perhaps perhaps RB 36297 1824 5 , , , 36297 1824 6 recognizes recognize VBZ 36297 1824 7 more more JJR 36297 1824 8 than than IN 36297 1824 9 anyone anyone NN 36297 1824 10 else else RB 36297 1824 11 the the DT 36297 1824 12 pitfalls pitfall NNS 36297 1824 13 of of IN 36297 1824 14 lighting lighting NN 36297 1824 15 but but CC 36297 1824 16 it -PRON- PRP 36297 1824 17 is be VBZ 36297 1824 18 unfortunate unfortunate JJ 36297 1824 19 that that IN 36297 1824 20 he -PRON- PRP 36297 1824 21 is be VBZ 36297 1824 22 not not RB 36297 1824 23 better well RBR 36297 1824 24 acquainted acquaint VBN 36297 1824 25 with with IN 36297 1824 26 the the DT 36297 1824 27 fundamentals fundamental NNS 36297 1824 28 underlying underlie VBG 36297 1824 29 the the DT 36297 1824 30 control control NN 36297 1824 31 of of IN 36297 1824 32 light light NN 36297 1824 33 . . . 36297 1825 1 Improper improper JJ 36297 1825 2 lighting lighting NN 36297 1825 3 does do VBZ 36297 1825 4 produce produce VB 36297 1825 5 apparent apparent JJ 36297 1825 6 incongruous incongruous JJ 36297 1825 7 effects effect NNS 36297 1825 8 but but CC 36297 1825 9 adequately adequately RB 36297 1825 10 controlled control VBD 36297 1825 11 it -PRON- PRP 36297 1825 12 is be VBZ 36297 1825 13 a a DT 36297 1825 14 powerful powerful JJ 36297 1825 15 medium medium NN 36297 1825 16 whose whose WP$ 36297 1825 17 potentiality potentiality NN 36297 1825 18 has have VBZ 36297 1825 19 not not RB 36297 1825 20 been be VBN 36297 1825 21 fully fully RB 36297 1825 22 realized realize VBN 36297 1825 23 . . . 36297 1826 1 The the DT 36297 1826 2 photographer photographer NN 36297 1826 3 aims aim VBZ 36297 1826 4 to to TO 36297 1826 5 illuminate illuminate VB 36297 1826 6 and and CC 36297 1826 7 to to TO 36297 1826 8 pose pose VB 36297 1826 9 the the DT 36297 1826 10 subject subject NN 36297 1826 11 with with IN 36297 1826 12 respect respect NN 36297 1826 13 to to IN 36297 1826 14 the the DT 36297 1826 15 source source NN 36297 1826 16 or or CC 36297 1826 17 sources source NNS 36297 1826 18 of of IN 36297 1826 19 light light NN 36297 1826 20 so so IN 36297 1826 21 that that IN 36297 1826 22 undesirable undesirable JJ 36297 1826 23 features feature NNS 36297 1826 24 are be VBP 36297 1826 25 suppressed suppress VBN 36297 1826 26 and and CC 36297 1826 27 desirable desirable JJ 36297 1826 28 results result NNS 36297 1826 29 are be VBP 36297 1826 30 obtained obtain VBN 36297 1826 31 . . . 36297 1827 1 Finally finally RB 36297 1827 2 his -PRON- PRP$ 36297 1827 3 work work NN 36297 1827 4 must must MD 36297 1827 5 be be VB 36297 1827 6 accepted accept VBN 36297 1827 7 by by IN 36297 1827 8 others other NNS 36297 1827 9 and and CC 36297 1827 10 the the DT 36297 1827 11 latter latter JJ 36297 1827 12 , , , 36297 1827 13 being be VBG 36297 1827 14 human human JJ 36297 1827 15 , , , 36297 1827 16 possess possess JJ 36297 1827 17 ( ( -LRB- 36297 1827 18 unadmittedly unadmittedly RB 36297 1827 19 of of IN 36297 1827 20 course course NN 36297 1827 21 ) ) -RRB- 36297 1827 22 a a DT 36297 1827 23 desire desire NN 36297 1827 24 to to TO 36297 1827 25 be be VB 36297 1827 26 " " `` 36297 1827 27 good good JJ 36297 1827 28 looking looking NN 36297 1827 29 . . . 36297 1827 30 " " '' 36297 1828 1 Lighting lighting NN 36297 1828 2 may may MD 36297 1828 3 be be VB 36297 1828 4 a a DT 36297 1828 5 powerful powerful JJ 36297 1828 6 flatterer flatterer NN 36297 1828 7 when when WRB 36297 1828 8 well well RB 36297 1828 9 controlled control VBN 36297 1828 10 and and CC 36297 1828 11 may may MD 36297 1828 12 be be VB 36297 1828 13 a a DT 36297 1828 14 base base NN 36297 1828 15 revealer revealer NN 36297 1828 16 or or CC 36297 1828 17 even even RB 36297 1828 18 a a DT 36297 1828 19 creator creator NN 36297 1828 20 of of IN 36297 1828 21 ugliness ugliness NN 36297 1828 22 . . . 36297 1829 1 Incidentally incidentally RB 36297 1829 2 , , , 36297 1829 3 the the DT 36297 1829 4 photographer photographer NN 36297 1829 5 is be VBZ 36297 1829 6 always always RB 36297 1829 7 under under IN 36297 1829 8 the the DT 36297 1829 9 handicap handicap NN 36297 1829 10 of of IN 36297 1829 11 supplying supply VBG 36297 1829 12 a a DT 36297 1829 13 " " `` 36297 1829 14 likeness likeness NN 36297 1829 15 " " '' 36297 1829 16 to to IN 36297 1829 17 an an DT 36297 1829 18 individual individual NN 36297 1829 19 who who WP 36297 1829 20 perhaps perhaps RB 36297 1829 21 never never RB 36297 1829 22 sees see VBZ 36297 1829 23 this this DT 36297 1829 24 same same JJ 36297 1829 25 " " `` 36297 1829 26 likeness likeness NN 36297 1829 27 " " '' 36297 1829 28 in in IN 36297 1829 29 a a DT 36297 1829 30 mirror mirror NN 36297 1829 31 . . . 36297 1830 1 In in IN 36297 1830 2 other other JJ 36297 1830 3 words word NNS 36297 1830 4 , , , 36297 1830 5 the the DT 36297 1830 6 image image NN 36297 1830 7 which which WDT 36297 1830 8 a a DT 36297 1830 9 person person NN 36297 1830 10 sees see VBZ 36297 1830 11 of of IN 36297 1830 12 himself -PRON- PRP 36297 1830 13 in in IN 36297 1830 14 a a DT 36297 1830 15 mirror mirror NN 36297 1830 16 is be VBZ 36297 1830 17 not not RB 36297 1830 18 the the DT 36297 1830 19 same same JJ 36297 1830 20 in in IN 36297 1830 21 general general JJ 36297 1830 22 that that IN 36297 1830 23 the the DT 36297 1830 24 photographer photographer NN 36297 1830 25 supplies supply VBZ 36297 1830 26 him -PRON- PRP 36297 1830 27 in in IN 36297 1830 28 the the DT 36297 1830 29 photographic photographic JJ 36297 1830 30 portrait portrait NN 36297 1830 31 . . . 36297 1831 1 The the DT 36297 1831 2 portrait portrait NN 36297 1831 3 can can MD 36297 1831 4 be be VB 36297 1831 5 a a DT 36297 1831 6 true true JJ 36297 1831 7 likeness likeness NN 36297 1831 8 but but CC 36297 1831 9 the the DT 36297 1831 10 mirrored mirror VBN 36297 1831 11 image image NN 36297 1831 12 in in IN 36297 1831 13 general general JJ 36297 1831 14 can can MD 36297 1831 15 not not RB 36297 1831 16 be be VB 36297 1831 17 . . . 36297 1832 1 In in IN 36297 1832 2 the the DT 36297 1832 3 mirror mirror NN 36297 1832 4 there there EX 36297 1832 5 is be VBZ 36297 1832 6 a a DT 36297 1832 7 reversal reversal NN 36297 1832 8 of of IN 36297 1832 9 the the DT 36297 1832 10 parts part NNS 36297 1832 11 from from IN 36297 1832 12 right right NN 36297 1832 13 to to IN 36297 1832 14 left left NN 36297 1832 15 . . . 36297 1833 1 For for IN 36297 1833 2 example example NN 36297 1833 3 , , , 36297 1833 4 a a DT 36297 1833 5 scar scar NN 36297 1833 6 on on IN 36297 1833 7 the the DT 36297 1833 8 right right JJ 36297 1833 9 cheek cheek NN 36297 1833 10 of of IN 36297 1833 11 the the DT 36297 1833 12 actual actual JJ 36297 1833 13 face face NN 36297 1833 14 appears appear VBZ 36297 1833 15 on on IN 36297 1833 16 the the DT 36297 1833 17 left left JJ 36297 1833 18 cheek cheek NN 36297 1833 19 in in IN 36297 1833 20 the the DT 36297 1833 21 mirror mirror NN 36297 1833 22 . . . 36297 1834 1 Faces face NNS 36297 1834 2 are be VBP 36297 1834 3 not not RB 36297 1834 4 usually usually RB 36297 1834 5 symmetrical symmetrical JJ 36297 1834 6 and and CC 36297 1834 7 this this DT 36297 1834 8 reversal reversal NN 36297 1834 9 causes cause VBZ 36297 1834 10 an an DT 36297 1834 11 individual individual NN 36297 1834 12 to to TO 36297 1834 13 be be VB 36297 1834 14 familiar familiar JJ 36297 1834 15 with with IN 36297 1834 16 his -PRON- PRP$ 36297 1834 17 own own JJ 36297 1834 18 facial facial JJ 36297 1834 19 characteristics characteristic NNS 36297 1834 20 in in IN 36297 1834 21 this this DT 36297 1834 22 reversed reversed JJ 36297 1834 23 form form NN 36297 1834 24 . . . 36297 1835 1 This this DT 36297 1835 2 influence influence NN 36297 1835 3 is be VBZ 36297 1835 4 very very RB 36297 1835 5 marked marked JJ 36297 1835 6 in in IN 36297 1835 7 some some DT 36297 1835 8 cases case NNS 36297 1835 9 . . . 36297 1836 1 For for IN 36297 1836 2 example example NN 36297 1836 3 , , , 36297 1836 4 suppose suppose VB 36297 1836 5 the the DT 36297 1836 6 left left JJ 36297 1836 7 side side NN 36297 1836 8 of of IN 36297 1836 9 a a DT 36297 1836 10 companion companion NN 36297 1836 11 's 's POS 36297 1836 12 face face NN 36297 1836 13 to to TO 36297 1836 14 be be VB 36297 1836 15 somewhat somewhat RB 36297 1836 16 paralyzed paralyzed JJ 36297 1836 17 on on IN 36297 1836 18 one one CD 36297 1836 19 side side NN 36297 1836 20 due due IN 36297 1836 21 to to IN 36297 1836 22 illness illness NN 36297 1836 23 . . . 36297 1837 1 We -PRON- PRP 36297 1837 2 have have VBP 36297 1837 3 become become VBN 36297 1837 4 more more RBR 36297 1837 5 or or CC 36297 1837 6 less less RBR 36297 1837 7 oblivious oblivious JJ 36297 1837 8 to to IN 36297 1837 9 the the DT 36297 1837 10 altered altered JJ 36297 1837 11 expression expression NN 36297 1837 12 of of IN 36297 1837 13 the the DT 36297 1837 14 left left JJ 36297 1837 15 side side NN 36297 1837 16 by by IN 36297 1837 17 seeing see VBG 36297 1837 18 it -PRON- PRP 36297 1837 19 so so RB 36297 1837 20 often often RB 36297 1837 21 . . . 36297 1838 1 However however RB 36297 1838 2 , , , 36297 1838 3 if if IN 36297 1838 4 we -PRON- PRP 36297 1838 5 catch catch VBP 36297 1838 6 a a DT 36297 1838 7 glimpse glimpse NN 36297 1838 8 of of IN 36297 1838 9 this this DT 36297 1838 10 companion companion NN 36297 1838 11 's 's POS 36297 1838 12 face face NN 36297 1838 13 in in IN 36297 1838 14 the the DT 36297 1838 15 mirror mirror NN 36297 1838 16 and and CC 36297 1838 17 the the DT 36297 1838 18 altered altered JJ 36297 1838 19 expression expression NN 36297 1838 20 of of IN 36297 1838 21 the the DT 36297 1838 22 left left JJ 36297 1838 23 side side NN 36297 1838 24 now now RB 36297 1838 25 appears appear VBZ 36297 1838 26 upon upon IN 36297 1838 27 the the DT 36297 1838 28 right right JJ 36297 1838 29 side side NN 36297 1838 30 of of IN 36297 1838 31 the the DT 36297 1838 32 face face NN 36297 1838 33 , , , 36297 1838 34 the the DT 36297 1838 35 contrast contrast NN 36297 1838 36 makes make VBZ 36297 1838 37 the the DT 36297 1838 38 fact fact NN 36297 1838 39 very very RB 36297 1838 40 conspicuous conspicuous JJ 36297 1838 41 . . . 36297 1839 1 Perhaps perhaps RB 36297 1839 2 this this DT 36297 1839 3 accounts account VBZ 36297 1839 4 for for IN 36297 1839 5 the the DT 36297 1839 6 difference difference NN 36297 1839 7 which which WDT 36297 1839 8 exists exist VBZ 36297 1839 9 between between IN 36297 1839 10 the the DT 36297 1839 11 opinions opinion NNS 36297 1839 12 of of IN 36297 1839 13 the the DT 36297 1839 14 photographer photographer NN 36297 1839 15 ( ( -LRB- 36297 1839 16 or or CC 36297 1839 17 friends friend NNS 36297 1839 18 ) ) -RRB- 36297 1839 19 and and CC 36297 1839 20 of of IN 36297 1839 21 the the DT 36297 1839 22 subject subject NN 36297 1839 23 of of IN 36297 1839 24 the the DT 36297 1839 25 portrait portrait NN 36297 1839 26 . . . 36297 1840 1 All all PDT 36297 1840 2 the the DT 36297 1840 3 illusions illusion NNS 36297 1840 4 of of IN 36297 1840 5 brightness brightness NN 36297 1840 6 - - HYPH 36297 1840 7 contrast contrast NN 36297 1840 8 may may MD 36297 1840 9 be be VB 36297 1840 10 produced produce VBN 36297 1840 11 by by IN 36297 1840 12 lighting lighting NN 36297 1840 13 . . . 36297 1841 1 Surfaces surface NNS 36297 1841 2 and and CC 36297 1841 3 details detail NNS 36297 1841 4 may may MD 36297 1841 5 appear appear VB 36297 1841 6 larger large JJR 36297 1841 7 or or CC 36297 1841 8 smaller small JJR 36297 1841 9 , , , 36297 1841 10 harsh harsh JJ 36297 1841 11 or or CC 36297 1841 12 almost almost RB 36297 1841 13 obliterated obliterated JJ 36297 1841 14 , , , 36297 1841 15 heavy heavy JJ 36297 1841 16 or or CC 36297 1841 17 light light JJ 36297 1841 18 ; ; : 36297 1841 19 in in IN 36297 1841 20 fact fact NN 36297 1841 21 , , , 36297 1841 22 lighting lighting NN 36297 1841 23 plays play VBZ 36297 1841 24 an an DT 36297 1841 25 important important JJ 36297 1841 26 part part NN 36297 1841 27 in in IN 36297 1841 28 influencing influence VBG 36297 1841 29 the the DT 36297 1841 30 mood mood NN 36297 1841 31 or or CC 36297 1841 32 expression expression NN 36297 1841 33 of of IN 36297 1841 34 a a DT 36297 1841 35 room room NN 36297 1841 36 . . . 36297 1842 1 A a DT 36297 1842 2 ceiling ceiling NN 36297 1842 3 may may MD 36297 1842 4 be be VB 36297 1842 5 " " `` 36297 1842 6 lifted lift VBN 36297 1842 7 " " '' 36297 1842 8 by by IN 36297 1842 9 light light NN 36297 1842 10 or or CC 36297 1842 11 it -PRON- PRP 36297 1842 12 may may MD 36297 1842 13 hang hang VB 36297 1842 14 low low JJ 36297 1842 15 and and CC 36297 1842 16 threatening threatening JJ 36297 1842 17 when when WRB 36297 1842 18 dark dark JJ 36297 1842 19 , , , 36297 1842 20 due due JJ 36297 1842 21 to to IN 36297 1842 22 relatively relatively RB 36297 1842 23 little little JJ 36297 1842 24 light light NN 36297 1842 25 reaching reach VBG 36297 1842 26 it -PRON- PRP 36297 1842 27 . . . 36297 1843 1 Columns column NNS 36297 1843 2 may may MD 36297 1843 3 appear appear VB 36297 1843 4 dark dark JJ 36297 1843 5 on on IN 36297 1843 6 a a DT 36297 1843 7 light light JJ 36297 1843 8 background background NN 36297 1843 9 or or CC 36297 1843 10 vice vice NN 36297 1843 11 versa versa RB 36297 1843 12 , , , 36297 1843 13 and and CC 36297 1843 14 these these DT 36297 1843 15 illustrate illustrate VBP 36297 1843 16 the the DT 36297 1843 17 effects effect NNS 36297 1843 18 of of IN 36297 1843 19 irradiation irradiation NN 36297 1843 20 . . . 36297 1844 1 A a DT 36297 1844 2 given give VBN 36297 1844 3 room room NN 36297 1844 4 may may MD 36297 1844 5 be be VB 36297 1844 6 given give VBN 36297 1844 7 a a DT 36297 1844 8 variety variety NN 36297 1844 9 of of IN 36297 1844 10 moods mood NNS 36297 1844 11 or or CC 36297 1844 12 expressions expression NNS 36297 1844 13 by by IN 36297 1844 14 varying vary VBG 36297 1844 15 the the DT 36297 1844 16 lighting lighting NN 36297 1844 17 and and CC 36297 1844 18 inasmuch inasmuch NN 36297 1844 19 as as IN 36297 1844 20 the the DT 36297 1844 21 room room NN 36297 1844 22 and and CC 36297 1844 23 its -PRON- PRP$ 36297 1844 24 physical physical JJ 36297 1844 25 characteristics characteristic NNS 36297 1844 26 have have VBP 36297 1844 27 not not RB 36297 1844 28 been be VBN 36297 1844 29 altered alter VBN 36297 1844 30 , , , 36297 1844 31 the the DT 36297 1844 32 various various JJ 36297 1844 33 moods mood NNS 36297 1844 34 may may MD 36297 1844 35 be be VB 36297 1844 36 considered consider VBN 36297 1844 37 to to TO 36297 1844 38 be be VB 36297 1844 39 illusions illusion NNS 36297 1844 40 . . . 36297 1845 1 It -PRON- PRP 36297 1845 2 should should MD 36297 1845 3 be be VB 36297 1845 4 obvious obvious JJ 36297 1845 5 that that IN 36297 1845 6 lighting lighting NN 36297 1845 7 is be VBZ 36297 1845 8 a a DT 36297 1845 9 potent potent JJ 36297 1845 10 factor factor NN 36297 1845 11 . . . 36297 1846 1 In in IN 36297 1846 2 connection connection NN 36297 1846 3 with with IN 36297 1846 4 lighting lighting NN 36297 1846 5 it -PRON- PRP 36297 1846 6 should should MD 36297 1846 7 be be VB 36297 1846 8 noted note VBN 36297 1846 9 that that IN 36297 1846 10 contrasts contrast NNS 36297 1846 11 play play VBP 36297 1846 12 a a DT 36297 1846 13 prominent prominent JJ 36297 1846 14 rôle rôle NN 36297 1846 15 as as IN 36297 1846 16 they -PRON- PRP 36297 1846 17 always always RB 36297 1846 18 do do VBP 36297 1846 19 . . . 36297 1847 1 These these DT 36297 1847 2 have have VBP 36297 1847 3 been be VBN 36297 1847 4 discussed discuss VBN 36297 1847 5 in in IN 36297 1847 6 other other JJ 36297 1847 7 chapters chapter NNS 36297 1847 8 , , , 36297 1847 9 but but CC 36297 1847 10 it -PRON- PRP 36297 1847 11 appears appear VBZ 36297 1847 12 advantageous advantageous JJ 36297 1847 13 to to TO 36297 1847 14 recall recall VB 36297 1847 15 some some DT 36297 1847 16 of of IN 36297 1847 17 the the DT 36297 1847 18 chief chief NN 36297 1847 19 features feature NNS 36297 1847 20 . . . 36297 1848 1 The the DT 36297 1848 2 effect effect NN 36297 1848 3 of of IN 36297 1848 4 contrast contrast NN 36297 1848 5 is be VBZ 36297 1848 6 always always RB 36297 1848 7 in in IN 36297 1848 8 the the DT 36297 1848 9 direction direction NN 36297 1848 10 of of IN 36297 1848 11 still still RB 36297 1848 12 greater great JJR 36297 1848 13 contrast contrast NN 36297 1848 14 . . . 36297 1849 1 That that RB 36297 1849 2 is is RB 36297 1849 3 , , , 36297 1849 4 black black JJ 36297 1849 5 tends tend NNS 36297 1849 6 to to TO 36297 1849 7 make make VB 36297 1849 8 its -PRON- PRP$ 36297 1849 9 surroundings surrounding NNS 36297 1849 10 white white JJ 36297 1849 11 ; ; : 36297 1849 12 red red JJ 36297 1849 13 tends tend VBZ 36297 1849 14 to to TO 36297 1849 15 make make VB 36297 1849 16 its -PRON- PRP$ 36297 1849 17 surroundings surrounding NNS 36297 1849 18 blue blue JJ 36297 1849 19 - - HYPH 36297 1849 20 green green JJ 36297 1849 21 ( ( -LRB- 36297 1849 22 complementary complementary JJ 36297 1849 23 ) ) -RRB- 36297 1849 24 , , , 36297 1849 25 etc etc FW 36297 1849 26 . . . 36297 1850 1 The the DT 36297 1850 2 contrast contrast NN 36297 1850 3 - - HYPH 36297 1850 4 effect effect NN 36297 1850 5 is be VBZ 36297 1850 6 greatest great JJS 36297 1850 7 when when WRB 36297 1850 8 the the DT 36297 1850 9 two two CD 36297 1850 10 surfaces surface NNS 36297 1850 11 are be VBP 36297 1850 12 juxtaposed juxtapose VBN 36297 1850 13 and and CC 36297 1850 14 the the DT 36297 1850 15 elimination elimination NN 36297 1850 16 of of IN 36297 1850 17 boundary boundary JJ 36297 1850 18 lines line NNS 36297 1850 19 of of IN 36297 1850 20 other other JJ 36297 1850 21 colors color NNS 36297 1850 22 ( ( -LRB- 36297 1850 23 including include VBG 36297 1850 24 black black JJ 36297 1850 25 or or CC 36297 1850 26 white white JJ 36297 1850 27 ) ) -RRB- 36297 1850 28 increases increase VBZ 36297 1850 29 its -PRON- PRP$ 36297 1850 30 magnitude magnitude NN 36297 1850 31 . . . 36297 1851 1 The the DT 36297 1851 2 contrast contrast NN 36297 1851 3 - - HYPH 36297 1851 4 effect effect NN 36297 1851 5 of of IN 36297 1851 6 colors color NNS 36297 1851 7 is be VBZ 36297 1851 8 most most RBS 36297 1851 9 conspicuous conspicuous JJ 36297 1851 10 when when WRB 36297 1851 11 there there EX 36297 1851 12 is be VBZ 36297 1851 13 no no DT 36297 1851 14 brightness brightness NN 36297 1851 15 - - HYPH 36297 1851 16 contrast contrast NN 36297 1851 17 , , , 36297 1851 18 that that RB 36297 1851 19 is is RB 36297 1851 20 , , , 36297 1851 21 when when WRB 36297 1851 22 the the DT 36297 1851 23 two two CD 36297 1851 24 surfaces surface NNS 36297 1851 25 are be VBP 36297 1851 26 of of IN 36297 1851 27 equal equal JJ 36297 1851 28 brightness brightness NN 36297 1851 29 and and CC 36297 1851 30 therefore therefore RB 36297 1851 31 differ differ VBP 36297 1851 32 chiefly chiefly RB 36297 1851 33 in in IN 36297 1851 34 hue hue NNP 36297 1851 35 . . . 36297 1852 1 This this DT 36297 1852 2 effect effect NN 36297 1852 3 is be VBZ 36297 1852 4 also also RB 36297 1852 5 greatest great JJS 36297 1852 6 for for IN 36297 1852 7 saturated saturate VBN 36297 1852 8 colors color NNS 36297 1852 9 . . . 36297 1853 1 It -PRON- PRP 36297 1853 2 has have VBZ 36297 1853 3 been be VBN 36297 1853 4 stated state VBN 36297 1853 5 that that IN 36297 1853 6 cold cold JJ 36297 1853 7 colors color NNS 36297 1853 8 produce produce VBP 36297 1853 9 stronger strong JJR 36297 1853 10 contrast contrast NN 36297 1853 11 - - HYPH 36297 1853 12 effects effect NNS 36297 1853 13 than than IN 36297 1853 14 warm warm JJ 36297 1853 15 colors color NNS 36297 1853 16 , , , 36297 1853 17 but but CC 36297 1853 18 experimental experimental JJ 36297 1853 19 evidence evidence NN 36297 1853 20 is be VBZ 36297 1853 21 not not RB 36297 1853 22 sufficiently sufficiently RB 36297 1853 23 plentiful plentiful JJ 36297 1853 24 and and CC 36297 1853 25 dependable dependable JJ 36297 1853 26 to to TO 36297 1853 27 verify verify VB 36297 1853 28 this this DT 36297 1853 29 statement statement NN 36297 1853 30 . . . 36297 1854 1 As as IN 36297 1854 2 the the DT 36297 1854 3 intensity intensity NN 36297 1854 4 of of IN 36297 1854 5 illumination illumination NN 36297 1854 6 increases increase NNS 36297 1854 7 , , , 36297 1854 8 colors color NNS 36297 1854 9 appear appear VBP 36297 1854 10 to to TO 36297 1854 11 become become VB 36297 1854 12 less less RBR 36297 1854 13 saturated saturated JJ 36297 1854 14 . . . 36297 1855 1 For for IN 36297 1855 2 example example NN 36297 1855 3 , , , 36297 1855 4 a a DT 36297 1855 5 pure pure JJ 36297 1855 6 red red JJ 36297 1855 7 object object NN 36297 1855 8 under under IN 36297 1855 9 the the DT 36297 1855 10 noonday noonday NN 36297 1855 11 sun sun NN 36297 1855 12 is be VBZ 36297 1855 13 likely likely JJ 36297 1855 14 to to TO 36297 1855 15 be be VB 36297 1855 16 painted paint VBN 36297 1855 17 an an DT 36297 1855 18 orange orange NN 36297 1855 19 red red NN 36297 1855 20 by by IN 36297 1855 21 the the DT 36297 1855 22 artist artist NN 36297 1855 23 because because IN 36297 1855 24 it -PRON- PRP 36297 1855 25 does do VBZ 36297 1855 26 not not RB 36297 1855 27 appear appear VB 36297 1855 28 as as RB 36297 1855 29 saturated saturate VBN 36297 1855 30 as as IN 36297 1855 31 it -PRON- PRP 36297 1855 32 would would MD 36297 1855 33 under under IN 36297 1855 34 a a DT 36297 1855 35 much much RB 36297 1855 36 lower low JJR 36297 1855 37 intensity intensity NN 36297 1855 38 of of IN 36297 1855 39 illumination illumination NN 36297 1855 40 . . . 36297 1856 1 In in IN 36297 1856 2 general general JJ 36297 1856 3 , , , 36297 1856 4 black black JJ 36297 1856 5 and and CC 36297 1856 6 white white JJ 36297 1856 7 are be VBP 36297 1856 8 the the DT 36297 1856 9 final final JJ 36297 1856 10 appearances appearance NNS 36297 1856 11 of of IN 36297 1856 12 colors color NNS 36297 1856 13 for for IN 36297 1856 14 respectively respectively RB 36297 1856 15 very very RB 36297 1856 16 low low JJ 36297 1856 17 and and CC 36297 1856 18 very very RB 36297 1856 19 high high JJ 36297 1856 20 brightness brightness NN 36297 1856 21 . . . 36297 1857 1 As as IN 36297 1857 2 the the DT 36297 1857 3 intensity intensity NN 36297 1857 4 of of IN 36297 1857 5 illumination illumination NN 36297 1857 6 decreases decrease VBZ 36297 1857 7 , , , 36297 1857 8 hue hue NNP 36297 1857 9 finally finally RB 36297 1857 10 disappears disappear VBZ 36297 1857 11 and and CC 36297 1857 12 with with IN 36297 1857 13 continued continued JJ 36297 1857 14 decrease decrease NN 36297 1857 15 the the DT 36297 1857 16 color color NN 36297 1857 17 approaches approach NNS 36297 1857 18 black black JJ 36297 1857 19 . . . 36297 1858 1 Conversely conversely RB 36297 1858 2 , , , 36297 1858 3 as as IN 36297 1858 4 the the DT 36297 1858 5 intensity intensity NN 36297 1858 6 of of IN 36297 1858 7 illumination illumination NN 36297 1858 8 increases increase NNS 36297 1858 9 , , , 36297 1858 10 a a DT 36297 1858 11 color color NN 36297 1858 12 becomes become VBZ 36297 1858 13 apparently apparently RB 36297 1858 14 less less JJR 36297 1858 15 and and CC 36297 1858 16 less less RBR 36297 1858 17 saturated saturate VBN 36297 1858 18 and and CC 36297 1858 19 tends tend VBZ 36297 1858 20 toward toward IN 36297 1858 21 white white NN 36297 1858 22 . . . 36297 1859 1 For for IN 36297 1859 2 example example NN 36297 1859 3 , , , 36297 1859 4 on on IN 36297 1859 5 viewing view VBG 36297 1859 6 the the DT 36297 1859 7 sun sun NN 36297 1859 8 through through IN 36297 1859 9 a a DT 36297 1859 10 colored colored JJ 36297 1859 11 glass glass NN 36297 1859 12 the the DT 36297 1859 13 sun sun NN 36297 1859 14 appears appear VBZ 36297 1859 15 of of IN 36297 1859 16 a a DT 36297 1859 17 much much RB 36297 1859 18 less less RBR 36297 1859 19 saturated saturate VBN 36297 1859 20 color color NN 36297 1859 21 than than IN 36297 1859 22 the the DT 36297 1859 23 haze haze NN 36297 1859 24 near near IN 36297 1859 25 the the DT 36297 1859 26 sun sun NN 36297 1859 27 or or CC 36297 1859 28 a a DT 36297 1859 29 white white JJ 36297 1859 30 object object NN 36297 1859 31 illuminated illuminate VBN 36297 1859 32 by by IN 36297 1859 33 sunlight sunlight NN 36297 1859 34 . . . 36297 1860 1 Visual visual JJ 36297 1860 2 adaptation adaptation NN 36297 1860 3 also also RB 36297 1860 4 plays play VBZ 36297 1860 5 a a DT 36297 1860 6 prominent prominent JJ 36297 1860 7 part part NN 36297 1860 8 , , , 36297 1860 9 and and CC 36297 1860 10 it -PRON- PRP 36297 1860 11 may may MD 36297 1860 12 be be VB 36297 1860 13 stated state VBN 36297 1860 14 that that IN 36297 1860 15 all all DT 36297 1860 16 sensations sensation NNS 36297 1860 17 of of IN 36297 1860 18 light light NN 36297 1860 19 tend tend VBP 36297 1860 20 toward toward IN 36297 1860 21 a a DT 36297 1860 22 middle middle JJ 36297 1860 23 gray gray JJ 36297 1860 24 and and CC 36297 1860 25 all all DT 36297 1860 26 sensations sensation NNS 36297 1860 27 of of IN 36297 1860 28 color color NN 36297 1860 29 tend tend VBP 36297 1860 30 toward toward IN 36297 1860 31 neutrality neutrality NN 36297 1860 32 or or CC 36297 1860 33 a a DT 36297 1860 34 complete complete JJ 36297 1860 35 disappearance disappearance NN 36297 1860 36 of of IN 36297 1860 37 hue hue NNP 36297 1860 38 . . . 36297 1861 1 The the DT 36297 1861 2 tendency tendency NN 36297 1861 3 of of IN 36297 1861 4 sensations sensation NNS 36297 1861 5 of of IN 36297 1861 6 light light NN 36297 1861 7 toward toward IN 36297 1861 8 a a DT 36297 1861 9 middle middle JJ 36297 1861 10 gray gray NN 36297 1861 11 is be VBZ 36297 1861 12 not not RB 36297 1861 13 as as RB 36297 1861 14 easily easily RB 36297 1861 15 recognized recognize VBN 36297 1861 16 as as IN 36297 1861 17 changes change NNS 36297 1861 18 in in IN 36297 1861 19 color color NN 36297 1861 20 but but CC 36297 1861 21 various various JJ 36297 1861 22 facts fact NNS 36297 1861 23 support support VBP 36297 1861 24 this this DT 36297 1861 25 conclusion conclusion NN 36297 1861 26 . . . 36297 1862 1 In in IN 36297 1862 2 lighting lighting NN 36297 1862 3 it -PRON- PRP 36297 1862 4 is be VBZ 36297 1862 5 important important JJ 36297 1862 6 to to TO 36297 1862 7 recognize recognize VB 36297 1862 8 the the DT 36297 1862 9 tendency tendency NN 36297 1862 10 of of IN 36297 1862 11 color color NN 36297 1862 12 toward toward IN 36297 1862 13 neutrality neutrality NN 36297 1862 14 . . . 36297 1863 1 For for IN 36297 1863 2 example example NN 36297 1863 3 , , , 36297 1863 4 a a DT 36297 1863 5 warm warm JJ 36297 1863 6 yellow yellow JJ 36297 1863 7 light light NN 36297 1863 8 soon soon RB 36297 1863 9 disappears disappear VBZ 36297 1863 10 as as IN 36297 1863 11 a a DT 36297 1863 12 hue hue NN 36297 1863 13 and and CC 36297 1863 14 only only RB 36297 1863 15 its -PRON- PRP$ 36297 1863 16 subtle subtle JJ 36297 1863 17 influence influence NN 36297 1863 18 is be VBZ 36297 1863 19 left leave VBN 36297 1863 20 ; ; : 36297 1863 21 however however RB 36297 1863 22 , , , 36297 1863 23 a a DT 36297 1863 24 yellow yellow JJ 36297 1863 25 vase vase NN 36297 1863 26 still still RB 36297 1863 27 appears appear VBZ 36297 1863 28 yellow yellow JJ 36297 1863 29 because because IN 36297 1863 30 it -PRON- PRP 36297 1863 31 is be VBZ 36297 1863 32 contrasted contrast VBN 36297 1863 33 with with IN 36297 1863 34 objects object NNS 36297 1863 35 of of IN 36297 1863 36 other other JJ 36297 1863 37 colors color NNS 36297 1863 38 . . . 36297 1864 1 In in IN 36297 1864 2 the the DT 36297 1864 3 case case NN 36297 1864 4 of of IN 36297 1864 5 colored color VBN 36297 1864 6 light light NN 36297 1864 7 the the DT 36297 1864 8 light light NN 36297 1864 9 falls fall VBZ 36297 1864 10 upon upon IN 36297 1864 11 everything everything NN 36297 1864 12 visible visible JJ 36297 1864 13 , , , 36297 1864 14 and and CC 36297 1864 15 if if IN 36297 1864 16 there there EX 36297 1864 17 is be VBZ 36297 1864 18 no no DT 36297 1864 19 other other JJ 36297 1864 20 light light JJ 36297 1864 21 - - HYPH 36297 1864 22 source source NN 36297 1864 23 of of IN 36297 1864 24 another another DT 36297 1864 25 color color NN 36297 1864 26 with with IN 36297 1864 27 which which WDT 36297 1864 28 to to TO 36297 1864 29 contrast contrast VB 36297 1864 30 it -PRON- PRP 36297 1864 31 , , , 36297 1864 32 its -PRON- PRP$ 36297 1864 33 color color NN 36297 1864 34 appears appear VBZ 36297 1864 35 gradually gradually RB 36297 1864 36 to to TO 36297 1864 37 fade fade VB 36297 1864 38 . . . 36297 1865 1 This this DT 36297 1865 2 is be VBZ 36297 1865 3 an an DT 36297 1865 4 excellent excellent JJ 36297 1865 5 example example NN 36297 1865 6 of of IN 36297 1865 7 the the DT 36297 1865 8 tremendous tremendous JJ 36297 1865 9 power power NN 36297 1865 10 and and CC 36297 1865 11 importance importance NN 36297 1865 12 of of IN 36297 1865 13 contrast contrast NN 36297 1865 14 . . . 36297 1866 1 It -PRON- PRP 36297 1866 2 is be VBZ 36297 1866 3 the the DT 36297 1866 4 life life NN 36297 1866 5 of of IN 36297 1866 6 color color NN 36297 1866 7 and and CC 36297 1866 8 it -PRON- PRP 36297 1866 9 must must MD 36297 1866 10 be be VB 36297 1866 11 fully fully RB 36297 1866 12 appreciated appreciate VBN 36297 1866 13 if if IN 36297 1866 14 the the DT 36297 1866 15 potentiality potentiality NN 36297 1866 16 of of IN 36297 1866 17 lighting lighting NN 36297 1866 18 is be VBZ 36297 1866 19 to to TO 36297 1866 20 be be VB 36297 1866 21 drawn draw VBN 36297 1866 22 upon upon IN 36297 1866 23 as as IN 36297 1866 24 it -PRON- PRP 36297 1866 25 should should MD 36297 1866 26 be be VB 36297 1866 27 . . . 36297 1867 1 Physical physical JJ 36297 1867 2 measurements measurement NNS 36297 1867 3 are be VBP 36297 1867 4 as as RB 36297 1867 5 essential essential JJ 36297 1867 6 in in IN 36297 1867 7 lighting lighting NN 36297 1867 8 as as IN 36297 1867 9 in in IN 36297 1867 10 other other JJ 36297 1867 11 phases phase NNS 36297 1867 12 of of IN 36297 1867 13 human human JJ 36297 1867 14 endeavor endeavor NN 36297 1867 15 for for IN 36297 1867 16 forming form VBG 36297 1867 17 a a DT 36297 1867 18 solid solid JJ 36297 1867 19 foundation foundation NN 36297 1867 20 , , , 36297 1867 21 but but CC 36297 1867 22 in in IN 36297 1867 23 all all PDT 36297 1867 24 these these DT 36297 1867 25 activities activity NNS 36297 1867 26 where where WRB 36297 1867 27 visual visual JJ 36297 1867 28 perception perception NN 36297 1867 29 plays play VBZ 36297 1867 30 an an DT 36297 1867 31 important important JJ 36297 1867 32 part part NN 36297 1867 33 judgment judgment NN 36297 1867 34 is be VBZ 36297 1867 35 finally finally RB 36297 1867 36 the the DT 36297 1867 37 means mean NNS 36297 1867 38 for for IN 36297 1867 39 appraisal appraisal NN 36297 1867 40 . . . 36297 1868 1 Wherever wherever WRB 36297 1868 2 the the DT 36297 1868 3 psychological psychological JJ 36297 1868 4 aspect aspect NN 36297 1868 5 is be VBZ 36297 1868 6 prominent prominent JJ 36297 1868 7 physical physical JJ 36297 1868 8 measurements measurement NNS 36297 1868 9 are be VBP 36297 1868 10 likely likely JJ 36297 1868 11 to to TO 36297 1868 12 be be VB 36297 1868 13 misleading mislead VBG 36297 1868 14 if if IN 36297 1868 15 they -PRON- PRP 36297 1868 16 do do VBP 36297 1868 17 not not RB 36297 1868 18 agree agree VB 36297 1868 19 with with IN 36297 1868 20 mental mental JJ 36297 1868 21 appraisals appraisal NNS 36297 1868 22 . . . 36297 1869 1 Of of RB 36297 1869 2 course course RB 36297 1869 3 the the DT 36297 1869 4 physical physical JJ 36297 1869 5 measurements measurement NNS 36297 1869 6 should should MD 36297 1869 7 be be VB 36297 1869 8 made make VBN 36297 1869 9 and and CC 36297 1869 10 accumulated accumulate VBN 36297 1869 11 but but CC 36297 1869 12 they -PRON- PRP 36297 1869 13 should should MD 36297 1869 14 be be VB 36297 1869 15 considered consider VBN 36297 1869 16 not not RB 36297 1869 17 alone alone JJ 36297 1869 18 but but CC 36297 1869 19 in in IN 36297 1869 20 connection connection NN 36297 1869 21 with with IN 36297 1869 22 psychological psychological JJ 36297 1869 23 effects effect NNS 36297 1869 24 . . . 36297 1870 1 The the DT 36297 1870 2 photometer photometer NN 36297 1870 3 may may MD 36297 1870 4 show show VB 36297 1870 5 a a DT 36297 1870 6 very very RB 36297 1870 7 adequate adequate JJ 36297 1870 8 intensity intensity NN 36297 1870 9 of of IN 36297 1870 10 illumination illumination NN 36297 1870 11 ; ; : 36297 1870 12 nevertheless nevertheless RB 36297 1870 13 seeing seeing NN 36297 1870 14 may may MD 36297 1870 15 be be VB 36297 1870 16 unsatisfactory unsatisfactory JJ 36297 1870 17 or or CC 36297 1870 18 even even RB 36297 1870 19 impossible impossible JJ 36297 1870 20 . . . 36297 1871 1 An an DT 36297 1871 2 illumination illumination NN 36297 1871 3 of of IN 36297 1871 4 a a DT 36297 1871 5 few few JJ 36297 1871 6 foot foot NN 36297 1871 7 - - HYPH 36297 1871 8 candles candle NNS 36297 1871 9 under under IN 36297 1871 10 proper proper JJ 36297 1871 11 conditions condition NNS 36297 1871 12 at at IN 36297 1871 13 a a DT 36297 1871 14 given give VBN 36297 1871 15 surface surface NN 36297 1871 16 is be VBZ 36297 1871 17 quite quite RB 36297 1871 18 adequate adequate JJ 36297 1871 19 for for IN 36297 1871 20 reading reading NN 36297 1871 21 ; ; : 36297 1871 22 however however RB 36297 1871 23 , , , 36297 1871 24 this this DT 36297 1871 25 surface surface NN 36297 1871 26 may may MD 36297 1871 27 appear appear VB 36297 1871 28 quite quite RB 36297 1871 29 dark dark JJ 36297 1871 30 if if IN 36297 1871 31 the the DT 36297 1871 32 surroundings surrounding NNS 36297 1871 33 are be VBP 36297 1871 34 bright bright JJ 36297 1871 35 enough enough RB 36297 1871 36 . . . 36297 1872 1 In in IN 36297 1872 2 such such PDT 36297 1872 3 a a DT 36297 1872 4 case case NN 36297 1872 5 the the DT 36297 1872 6 photometer photometer NN 36297 1872 7 yielded yield VBD 36297 1872 8 results result NNS 36297 1872 9 quite quite RB 36297 1872 10 likely likely JJ 36297 1872 11 to to TO 36297 1872 12 be be VB 36297 1872 13 misinterpreted misinterpret VBN 36297 1872 14 as as IN 36297 1872 15 satisfactory satisfactory JJ 36297 1872 16 . . . 36297 1873 1 It -PRON- PRP 36297 1873 2 should should MD 36297 1873 3 be be VB 36297 1873 4 obvious obvious JJ 36297 1873 5 that that IN 36297 1873 6 many many JJ 36297 1873 7 illusions illusion NNS 36297 1873 8 discussed discuss VBN 36297 1873 9 in in IN 36297 1873 10 preceding precede VBG 36297 1873 11 chapters chapter NNS 36297 1873 12 are be VBP 36297 1873 13 of of IN 36297 1873 14 interest interest NN 36297 1873 15 in in IN 36297 1873 16 this this DT 36297 1873 17 connection connection NN 36297 1873 18 . . . 36297 1874 1 An an DT 36297 1874 2 interesting interesting JJ 36297 1874 3 example example NN 36297 1874 4 of of IN 36297 1874 5 the the DT 36297 1874 6 illusion illusion NN 36297 1874 7 of of IN 36297 1874 8 color color NN 36297 1874 9 may may MD 36297 1874 10 be be VB 36297 1874 11 easily easily RB 36297 1874 12 demonstrated demonstrate VBN 36297 1874 13 by by IN 36297 1874 14 means mean NNS 36297 1874 15 of of IN 36297 1874 16 a a DT 36297 1874 17 yellow yellow JJ 36297 1874 18 filter filter NN 36297 1874 19 . . . 36297 1875 1 For for IN 36297 1875 2 this this DT 36297 1875 3 purpose purpose NN 36297 1875 4 a a DT 36297 1875 5 canary canary JJ 36297 1875 6 glass glass NN 36297 1875 7 is be VBZ 36297 1875 8 quite quite RB 36297 1875 9 satisfactory satisfactory JJ 36297 1875 10 . . . 36297 1876 1 When when WRB 36297 1876 2 such such PDT 36297 1876 3 a a DT 36297 1876 4 filter filter NN 36297 1876 5 is be VBZ 36297 1876 6 placed place VBN 36297 1876 7 before before IN 36297 1876 8 the the DT 36297 1876 9 eyes eye NNS 36297 1876 10 a a DT 36297 1876 11 daytime daytime JJ 36297 1876 12 scene scene NN 36297 1876 13 outdoors outdoors RB 36297 1876 14 , , , 36297 1876 15 for for IN 36297 1876 16 example example NN 36297 1876 17 , , , 36297 1876 18 is be VBZ 36297 1876 19 likely likely JJ 36297 1876 20 to to TO 36297 1876 21 appear appear VB 36297 1876 22 to to TO 36297 1876 23 be be VB 36297 1876 24 illuminated illuminate VBN 36297 1876 25 to to IN 36297 1876 26 a a DT 36297 1876 27 greater great JJR 36297 1876 28 intensity intensity NN 36297 1876 29 than than IN 36297 1876 30 when when WRB 36297 1876 31 the the DT 36297 1876 32 eyes eye NNS 36297 1876 33 are be VBP 36297 1876 34 not not RB 36297 1876 35 looking look VBG 36297 1876 36 through through IN 36297 1876 37 the the DT 36297 1876 38 filter filter NN 36297 1876 39 . . . 36297 1877 1 This this DT 36297 1877 2 is be VBZ 36297 1877 3 true true JJ 36297 1877 4 for for IN 36297 1877 5 a a DT 36297 1877 6 glass glass NN 36297 1877 7 used use VBN 36297 1877 8 by by IN 36297 1877 9 the the DT 36297 1877 10 author author NN 36297 1877 11 notwithstanding notwithstanding IN 36297 1877 12 the the DT 36297 1877 13 fact fact NN 36297 1877 14 that that IN 36297 1877 15 the the DT 36297 1877 16 filter filter NN 36297 1877 17 transmits transmit VBZ 36297 1877 18 only only RB 36297 1877 19 about about IN 36297 1877 20 one one CD 36297 1877 21 - - HYPH 36297 1877 22 half half NN 36297 1877 23 as as RB 36297 1877 24 much much JJ 36297 1877 25 light light NN 36297 1877 26 as as IN 36297 1877 27 a a DT 36297 1877 28 perfectly perfectly RB 36297 1877 29 clear clear JJ 36297 1877 30 colorless colorless JJ 36297 1877 31 glass glass NN 36297 1877 32 . . . 36297 1878 1 In in IN 36297 1878 2 other other JJ 36297 1878 3 words word NNS 36297 1878 4 , , , 36297 1878 5 the the DT 36297 1878 6 brightnesses brightness NNS 36297 1878 7 of of IN 36297 1878 8 objects object NNS 36297 1878 9 in in IN 36297 1878 10 the the DT 36297 1878 11 scene scene NN 36297 1878 12 are be VBP 36297 1878 13 reduced reduce VBN 36297 1878 14 on on IN 36297 1878 15 the the DT 36297 1878 16 average average NN 36297 1878 17 about about RB 36297 1878 18 fifty fifty CD 36297 1878 19 per per IN 36297 1878 20 cent cent NN 36297 1878 21 , , , 36297 1878 22 still still RB 36297 1878 23 the the DT 36297 1878 24 subject subject NN 36297 1878 25 is be VBZ 36297 1878 26 impressed impressed JJ 36297 1878 27 with with IN 36297 1878 28 an an DT 36297 1878 29 apparent apparent JJ 36297 1878 30 _ _ NNP 36297 1878 31 increase increase NN 36297 1878 32 _ _ NNP 36297 1878 33 in in IN 36297 1878 34 the the DT 36297 1878 35 intensity intensity NN 36297 1878 36 of of IN 36297 1878 37 illumination illumination NN 36297 1878 38 ( ( -LRB- 36297 1878 39 and and CC 36297 1878 40 in in IN 36297 1878 41 brightness brightness NN 36297 1878 42 ) ) -RRB- 36297 1878 43 when when WRB 36297 1878 44 the the DT 36297 1878 45 filter filter NN 36297 1878 46 is be VBZ 36297 1878 47 placed place VBN 36297 1878 48 before before IN 36297 1878 49 the the DT 36297 1878 50 eyes eye NNS 36297 1878 51 . . . 36297 1879 1 Of of RB 36297 1879 2 course course RB 36297 1879 3 , , , 36297 1879 4 the the DT 36297 1879 5 actual actual JJ 36297 1879 6 reduction reduction NN 36297 1879 7 in in IN 36297 1879 8 brightness brightness NN 36297 1879 9 depends depend VBZ 36297 1879 10 upon upon IN 36297 1879 11 the the DT 36297 1879 12 color color NN 36297 1879 13 of of IN 36297 1879 14 the the DT 36297 1879 15 object object NN 36297 1879 16 . . . 36297 1880 1 In in IN 36297 1880 2 such such PDT 36297 1880 3 a a DT 36297 1880 4 case case NN 36297 1880 5 as as IN 36297 1880 6 the the DT 36297 1880 7 foregoing foregoing JJ 36297 1880 8 , , , 36297 1880 9 true true JJ 36297 1880 10 explanations explanation NNS 36297 1880 11 are be VBP 36297 1880 12 likely likely JJ 36297 1880 13 to to TO 36297 1880 14 involve involve VB 36297 1880 15 many many JJ 36297 1880 16 factors factor NNS 36297 1880 17 . . . 36297 1881 1 For for IN 36297 1881 2 this this DT 36297 1881 3 reason reason NN 36297 1881 4 explanations explanation NNS 36297 1881 5 are be VBP 36297 1881 6 usually usually RB 36297 1881 7 tedious tedious JJ 36297 1881 8 if if IN 36297 1881 9 they -PRON- PRP 36297 1881 10 are be VBP 36297 1881 11 to to TO 36297 1881 12 be be VB 36297 1881 13 sufficiently sufficiently RB 36297 1881 14 qualified qualified JJ 36297 1881 15 to to TO 36297 1881 16 be be VB 36297 1881 17 reasonably reasonably RB 36297 1881 18 near near IN 36297 1881 19 completeness completeness NN 36297 1881 20 . . . 36297 1882 1 In in IN 36297 1882 2 this this DT 36297 1882 3 case case NN 36297 1882 4 it -PRON- PRP 36297 1882 5 appears appear VBZ 36297 1882 6 that that IN 36297 1882 7 the the DT 36297 1882 8 yellow yellow JJ 36297 1882 9 filter filter NN 36297 1882 10 may may MD 36297 1882 11 cause cause VB 36297 1882 12 one one PRP 36297 1882 13 to to TO 36297 1882 14 appraise appraise VB 36297 1882 15 the the DT 36297 1882 16 intensity intensity NN 36297 1882 17 of of IN 36297 1882 18 illumination illumination NN 36297 1882 19 as as IN 36297 1882 20 having have VBG 36297 1882 21 increased increase VBN 36297 1882 22 , , , 36297 1882 23 by by IN 36297 1882 24 associating associate VBG 36297 1882 25 such such PDT 36297 1882 26 an an DT 36297 1882 27 influence influence NN 36297 1882 28 as as IN 36297 1882 29 the the DT 36297 1882 30 sun sun NN 36297 1882 31 coming come VBG 36297 1882 32 out out RP 36297 1882 33 from from IN 36297 1882 34 behind behind IN 36297 1882 35 a a DT 36297 1882 36 cloud cloud NN 36297 1882 37 . . . 36297 1883 1 If if IN 36297 1883 2 we -PRON- PRP 36297 1883 3 look look VBP 36297 1883 4 into into IN 36297 1883 5 the the DT 36297 1883 6 depths depth NNS 36297 1883 7 where where WRB 36297 1883 8 light light NN 36297 1883 9 and and CC 36297 1883 10 color color NN 36297 1883 11 accumulated accumulate VBD 36297 1883 12 their -PRON- PRP$ 36297 1883 13 psychological psychological JJ 36297 1883 14 powers power NNS 36297 1883 15 , , , 36297 1883 16 we -PRON- PRP 36297 1883 17 are be VBP 36297 1883 18 confronted confront VBN 36297 1883 19 on on IN 36297 1883 20 every every DT 36297 1883 21 hand hand NN 36297 1883 22 by by IN 36297 1883 23 associations association NNS 36297 1883 24 many many JJ 36297 1883 25 of of IN 36297 1883 26 which which WDT 36297 1883 27 are be VBP 36297 1883 28 more more RBR 36297 1883 29 or or CC 36297 1883 30 less less RBR 36297 1883 31 obscure obscure JJ 36297 1883 32 , , , 36297 1883 33 and and CC 36297 1883 34 therefore therefore RB 36297 1883 35 are be VBP 36297 1883 36 subtly subtly RB 36297 1883 37 influential influential JJ 36297 1883 38 . . . 36297 1884 1 The the DT 36297 1884 2 psychological psychological JJ 36297 1884 3 powers power NNS 36297 1884 4 of of IN 36297 1884 5 colors color NNS 36297 1884 6 could could MD 36297 1884 7 have have VB 36297 1884 8 been be VBN 36297 1884 9 discussed discuss VBN 36297 1884 10 more more RBR 36297 1884 11 generally generally RB 36297 1884 12 in in IN 36297 1884 13 the the DT 36297 1884 14 preceding precede VBG 36297 1884 15 chapter chapter NN 36297 1884 16 , , , 36297 1884 17 but but CC 36297 1884 18 inasmuch inasmuch JJ 36297 1884 19 as as IN 36297 1884 20 they -PRON- PRP 36297 1884 21 can can MD 36297 1884 22 be be VB 36297 1884 23 demonstrated demonstrate VBN 36297 1884 24 more more RBR 36297 1884 25 effectively effectively RB 36297 1884 26 by by IN 36297 1884 27 lighting light VBG 36297 1884 28 ( ( -LRB- 36297 1884 29 and and CC 36297 1884 30 after after IN 36297 1884 31 all all PDT 36297 1884 32 the the DT 36297 1884 33 effect effect NN 36297 1884 34 is be VBZ 36297 1884 35 one one CD 36297 1884 36 of of IN 36297 1884 37 light light NN 36297 1884 38 in in IN 36297 1884 39 any any DT 36297 1884 40 case case NN 36297 1884 41 ) ) -RRB- 36297 1884 42 they -PRON- PRP 36297 1884 43 will will MD 36297 1884 44 be be VB 36297 1884 45 discussed discuss VBN 36297 1884 46 briefly briefly RB 36297 1884 47 here here RB 36297 1884 48 . . . 36297 1885 1 They -PRON- PRP 36297 1885 2 have have VBP 36297 1885 3 been be VBN 36297 1885 4 presented present VBN 36297 1885 5 more more RBR 36297 1885 6 at at IN 36297 1885 7 length length NN 36297 1885 8 elsewhere elsewhere RB 36297 1885 9 . . . 36297 1886 1 It -PRON- PRP 36297 1886 2 is be VBZ 36297 1886 3 well well RB 36297 1886 4 known know VBN 36297 1886 5 that that IN 36297 1886 6 the the DT 36297 1886 7 artist artist NN 36297 1886 8 , , , 36297 1886 9 decorator decorator NN 36297 1886 10 , , , 36297 1886 11 and and CC 36297 1886 12 others other NNS 36297 1886 13 speak speak VBP 36297 1886 14 of of IN 36297 1886 15 warm warm JJ 36297 1886 16 and and CC 36297 1886 17 cold cold JJ 36297 1886 18 colors color NNS 36297 1886 19 , , , 36297 1886 20 and and CC 36297 1886 21 these these DT 36297 1886 22 effects effect NNS 36297 1886 23 have have VBP 36297 1886 24 a a DT 36297 1886 25 firm firm JJ 36297 1886 26 psychological psychological JJ 36297 1886 27 foundation foundation NN 36297 1886 28 . . . 36297 1887 1 For for IN 36297 1887 2 example example NN 36297 1887 3 , , , 36297 1887 4 if if IN 36297 1887 5 a a DT 36297 1887 6 certain certain JJ 36297 1887 7 room room NN 36297 1887 8 be be VB 36297 1887 9 illuminated illuminate VBN 36297 1887 10 by by IN 36297 1887 11 means mean NNS 36297 1887 12 of of IN 36297 1887 13 blue blue JJ 36297 1887 14 light light NN 36297 1887 15 , , , 36297 1887 16 it -PRON- PRP 36297 1887 17 does do VBZ 36297 1887 18 seem seem VB 36297 1887 19 colder cold JJR 36297 1887 20 . . . 36297 1888 1 A a DT 36297 1888 2 theater theater NN 36297 1888 3 illuminated illuminate VBN 36297 1888 4 by by IN 36297 1888 5 means mean NNS 36297 1888 6 of of IN 36297 1888 7 bluish bluish JJ 36297 1888 8 light light NN 36297 1888 9 seems seem VBZ 36297 1888 10 considerably considerably RB 36297 1888 11 cooler cool JJR 36297 1888 12 to to IN 36297 1888 13 the the DT 36297 1888 14 audience audience NN 36297 1888 15 than than IN 36297 1888 16 is be VBZ 36297 1888 17 indicated indicate VBN 36297 1888 18 by by IN 36297 1888 19 the the DT 36297 1888 20 thermometer thermometer NN 36297 1888 21 . . . 36297 1889 1 If if IN 36297 1889 2 this this DT 36297 1889 3 lighting lighting NN 36297 1889 4 is be VBZ 36297 1889 5 resorted resort VBN 36297 1889 6 to to IN 36297 1889 7 in in IN 36297 1889 8 the the DT 36297 1889 9 summer summer NN 36297 1889 10 time time NN 36297 1889 11 the the DT 36297 1889 12 theater theater NN 36297 1889 13 will will MD 36297 1889 14 be be VB 36297 1889 15 more more RBR 36297 1889 16 inviting inviting JJ 36297 1889 17 and and CC 36297 1889 18 , , , 36297 1889 19 after after RB 36297 1889 20 all all RB 36297 1889 21 , , , 36297 1889 22 in in IN 36297 1889 23 such such PDT 36297 1889 24 a a DT 36297 1889 25 case case NN 36297 1889 26 it -PRON- PRP 36297 1889 27 makes make VBZ 36297 1889 28 little little JJ 36297 1889 29 difference difference NN 36297 1889 30 what what WP 36297 1889 31 the the DT 36297 1889 32 thermometer thermometer NN 36297 1889 33 indicates indicate VBZ 36297 1889 34 . . . 36297 1890 1 The the DT 36297 1890 2 " " `` 36297 1890 3 cold cold JJ 36297 1890 4 " " '' 36297 1890 5 light light NN 36297 1890 6 has have VBZ 36297 1890 7 produced produce VBN 36297 1890 8 an an DT 36297 1890 9 illusion illusion NN 36297 1890 10 of of IN 36297 1890 11 coolness coolness NN 36297 1890 12 . . . 36297 1891 1 Similarly similarly RB 36297 1891 2 " " `` 36297 1891 3 warm warm JJ 36297 1891 4 " " '' 36297 1891 5 light light NN 36297 1891 6 , , , 36297 1891 7 such such JJ 36297 1891 8 as as IN 36297 1891 9 yellow yellow JJ 36297 1891 10 or or CC 36297 1891 11 orange orange JJ 36297 1891 12 , , , 36297 1891 13 is be VBZ 36297 1891 14 responsible responsible JJ 36297 1891 15 for for IN 36297 1891 16 the the DT 36297 1891 17 opposite opposite JJ 36297 1891 18 feeling feeling NN 36297 1891 19 and and CC 36297 1891 20 it -PRON- PRP 36297 1891 21 is be VBZ 36297 1891 22 easily easily RB 36297 1891 23 demonstrated demonstrate VBN 36297 1891 24 that that IN 36297 1891 25 an an DT 36297 1891 26 illusion illusion NN 36297 1891 27 of of IN 36297 1891 28 higher high JJR 36297 1891 29 temperature temperature NN 36297 1891 30 may may MD 36297 1891 31 be be VB 36297 1891 32 produced produce VBN 36297 1891 33 by by IN 36297 1891 34 its -PRON- PRP$ 36297 1891 35 use use NN 36297 1891 36 . . . 36297 1892 1 As as IN 36297 1892 2 already already RB 36297 1892 3 stated state VBN 36297 1892 4 , , , 36297 1892 5 color color NN 36297 1892 6 - - HYPH 36297 1892 7 schemes scheme NNS 36297 1892 8 in in IN 36297 1892 9 the the DT 36297 1892 10 decorations decoration NNS 36297 1892 11 and and CC 36297 1892 12 furnishings furnishing NNS 36297 1892 13 produce produce VBP 36297 1892 14 similar similar JJ 36297 1892 15 effects effect NNS 36297 1892 16 but but CC 36297 1892 17 in in IN 36297 1892 18 general general JJ 36297 1892 19 they -PRON- PRP 36297 1892 20 are be VBP 36297 1892 21 more more RBR 36297 1892 22 powerful powerful JJ 36297 1892 23 when when WRB 36297 1892 24 the the DT 36297 1892 25 primary primary JJ 36297 1892 26 light light NN 36297 1892 27 is be VBZ 36297 1892 28 colored color VBN 36297 1892 29 . . . 36297 1893 1 In in IN 36297 1893 2 the the DT 36297 1893 3 latter latter JJ 36297 1893 4 case case NN 36297 1893 5 no no DT 36297 1893 6 object object NN 36297 1893 7 is be VBZ 36297 1893 8 overlooked overlook VBN 36297 1893 9 for for IN 36297 1893 10 even even RB 36297 1893 11 the the DT 36297 1893 12 hands hand NNS 36297 1893 13 and and CC 36297 1893 14 faces face NNS 36297 1893 15 of of IN 36297 1893 16 the the DT 36297 1893 17 beings being NNS 36297 1893 18 in in IN 36297 1893 19 the the DT 36297 1893 20 room room NN 36297 1893 21 are be VBP 36297 1893 22 colored color VBN 36297 1893 23 by by IN 36297 1893 24 the the DT 36297 1893 25 light light NN 36297 1893 26 . . . 36297 1894 1 In in IN 36297 1894 2 the the DT 36297 1894 3 case case NN 36297 1894 4 of of IN 36297 1894 5 color color NN 36297 1894 6 - - HYPH 36297 1894 7 schemes scheme NNS 36297 1894 8 not not RB 36297 1894 9 all all DT 36297 1894 10 objects object NNS 36297 1894 11 are be VBP 36297 1894 12 tinged tinge VBN 36297 1894 13 with with IN 36297 1894 14 the the DT 36297 1894 15 desired desire VBN 36297 1894 16 " " `` 36297 1894 17 warm warm JJ 36297 1894 18 " " '' 36297 1894 19 or or CC 36297 1894 20 " " `` 36297 1894 21 cold cold JJ 36297 1894 22 " " '' 36297 1894 23 color color NN 36297 1894 24 . . . 36297 1895 1 In in IN 36297 1895 2 the the DT 36297 1895 3 foregoing foregoing NN 36297 1895 4 , , , 36297 1895 5 associations association NNS 36297 1895 6 play play VBP 36297 1895 7 a a DT 36297 1895 8 prominent prominent JJ 36297 1895 9 rôle rôle NN 36297 1895 10 . . . 36297 1896 1 The the DT 36297 1896 2 sky sky NN 36297 1896 3 has have VBZ 36297 1896 4 been be VBN 36297 1896 5 blue blue JJ 36297 1896 6 throughout throughout IN 36297 1896 7 the the DT 36297 1896 8 numberless numberless JJ 36297 1896 9 centuries century NNS 36297 1896 10 during during IN 36297 1896 11 which which WDT 36297 1896 12 the the DT 36297 1896 13 human human JJ 36297 1896 14 organism organism NN 36297 1896 15 evolved evolve VBD 36297 1896 16 . . . 36297 1897 1 The the DT 36297 1897 2 blue blue JJ 36297 1897 3 - - HYPH 36297 1897 4 sky sky NN 36297 1897 5 during during IN 36297 1897 6 all all PDT 36297 1897 7 these these DT 36297 1897 8 centuries century NNS 36297 1897 9 has have VBZ 36297 1897 10 tinged tinge VBN 36297 1897 11 the the DT 36297 1897 12 shadows shadow NNS 36297 1897 13 outdoors outdoors IN 36297 1897 14 a a DT 36297 1897 15 bluish bluish JJ 36297 1897 16 color color NN 36297 1897 17 . . . 36297 1898 1 That that DT 36297 1898 2 shade shade NN 36297 1898 3 is be VBZ 36297 1898 4 relatively relatively RB 36297 1898 5 cool cool JJ 36297 1898 6 we -PRON- PRP 36297 1898 7 know know VBP 36297 1898 8 by by IN 36297 1898 9 experience experience NN 36297 1898 10 and and CC 36297 1898 11 perhaps perhaps RB 36297 1898 12 we -PRON- PRP 36297 1898 13 associate associate VBP 36297 1898 14 coolness coolness NN 36297 1898 15 or or CC 36297 1898 16 cold cold JJ 36297 1898 17 with with IN 36297 1898 18 the the DT 36297 1898 19 aerial aerial JJ 36297 1898 20 realm realm NN 36297 1898 21 . . . 36297 1899 1 These these DT 36297 1899 2 are be VBP 36297 1899 3 glimpses glimpse NNS 36297 1899 4 of of IN 36297 1899 5 influences influence NNS 36297 1899 6 which which WDT 36297 1899 7 have have VBP 36297 1899 8 coöperated coöperate VBN 36297 1899 9 toward toward IN 36297 1899 10 creating create VBG 36297 1899 11 the the DT 36297 1899 12 psychological psychological JJ 36297 1899 13 effect effect NN 36297 1899 14 of of IN 36297 1899 15 coldness coldness NN 36297 1899 16 in in IN 36297 1899 17 the the DT 36297 1899 18 case case NN 36297 1899 19 of of IN 36297 1899 20 bluish bluish JJ 36297 1899 21 light light NN 36297 1899 22 . . . 36297 1900 1 By by IN 36297 1900 2 contrast contrast NN 36297 1900 3 with with IN 36297 1900 4 skylight skylight NN 36297 1900 5 , , , 36297 1900 6 sunlight sunlight NN 36297 1900 7 is be VBZ 36297 1900 8 yellowish yellowish JJ 36297 1900 9 , , , 36297 1900 10 and and CC 36297 1900 11 a a DT 36297 1900 12 place place NN 36297 1900 13 in in IN 36297 1900 14 the the DT 36297 1900 15 sun sun NN 36297 1900 16 is be VBZ 36297 1900 17 relatively relatively RB 36297 1900 18 warm warm JJ 36297 1900 19 . . . 36297 1901 1 South south JJ 36297 1901 2 rooms room NNS 36297 1901 3 are be VBP 36297 1901 4 usually usually RB 36297 1901 5 warmer warm JJR 36297 1901 6 than than IN 36297 1901 7 north north NN 36297 1901 8 rooms room NNS 36297 1901 9 in in IN 36297 1901 10 this this DT 36297 1901 11 hemisphere hemisphere NN 36297 1901 12 when when WRB 36297 1901 13 artificial artificial JJ 36297 1901 14 heat heat NN 36297 1901 15 is be VBZ 36297 1901 16 absent absent JJ 36297 1901 17 and and CC 36297 1901 18 the the DT 36297 1901 19 psychological psychological JJ 36297 1901 20 effect effect NN 36297 1901 21 of of IN 36297 1901 22 warmth warmth NNP 36297 1901 23 has have VBZ 36297 1901 24 naturally naturally RB 36297 1901 25 grown grow VBN 36297 1901 26 out out IN 36297 1901 27 of of IN 36297 1901 28 these these DT 36297 1901 29 and and CC 36297 1901 30 similar similar JJ 36297 1901 31 influences influence NNS 36297 1901 32 . . . 36297 1902 1 We -PRON- PRP 36297 1902 2 could could MD 36297 1902 3 go go VB 36297 1902 4 further further RB 36297 1902 5 into into IN 36297 1902 6 the the DT 36297 1902 7 psychology psychology NN 36297 1902 8 of of IN 36297 1902 9 light light NN 36297 1902 10 and and CC 36297 1902 11 color color NN 36297 1902 12 and and CC 36297 1902 13 conjecture conjecture NN 36297 1902 14 regarding regard VBG 36297 1902 15 effects effect NNS 36297 1902 16 directly directly RB 36297 1902 17 attributable attributable JJ 36297 1902 18 to to IN 36297 1902 19 color color NN 36297 1902 20 , , , 36297 1902 21 such such JJ 36297 1902 22 as as IN 36297 1902 23 excitement excitement NN 36297 1902 24 , , , 36297 1902 25 depression depression NN 36297 1902 26 , , , 36297 1902 27 and and CC 36297 1902 28 tranquillity tranquillity NN 36297 1902 29 . . . 36297 1903 1 In in IN 36297 1903 2 so so RB 36297 1903 3 doing do VBG 36297 1903 4 we -PRON- PRP 36297 1903 5 would would MD 36297 1903 6 be be VB 36297 1903 7 led lead VBN 36297 1903 8 far far RB 36297 1903 9 astray astray RB 36297 1903 10 from from IN 36297 1903 11 illusions illusion NNS 36297 1903 12 in in IN 36297 1903 13 the the DT 36297 1903 14 sense sense NN 36297 1903 15 of of IN 36297 1903 16 the the DT 36297 1903 17 term term NN 36297 1903 18 as as IN 36297 1903 19 used use VBN 36297 1903 20 here here RB 36297 1903 21 . . . 36297 1904 1 Although although IN 36297 1904 2 this this DT 36297 1904 3 term term NN 36297 1904 4 as as IN 36297 1904 5 used use VBN 36297 1904 6 here here RB 36297 1904 7 is be VBZ 36297 1904 8 still still RB 36297 1904 9 somewhat somewhat RB 36297 1904 10 restricted restricted JJ 36297 1904 11 , , , 36297 1904 12 it -PRON- PRP 36297 1904 13 is be VBZ 36297 1904 14 broader broad JJR 36297 1904 15 in in IN 36297 1904 16 scope scope NN 36297 1904 17 than than IN 36297 1904 18 in in IN 36297 1904 19 its -PRON- PRP$ 36297 1904 20 usual usual JJ 36297 1904 21 applications application NNS 36297 1904 22 . . . 36297 1905 1 However however RB 36297 1905 2 , , , 36297 1905 3 it -PRON- PRP 36297 1905 4 is be VBZ 36297 1905 5 not not RB 36297 1905 6 broad broad JJ 36297 1905 7 enough enough RB 36297 1905 8 to to TO 36297 1905 9 lead lead VB 36297 1905 10 far far RB 36297 1905 11 into into IN 36297 1905 12 the the DT 36297 1905 13 many many JJ 36297 1905 14 devious devious JJ 36297 1905 15 highways highway NNS 36297 1905 16 and and CC 36297 1905 17 byways byway NNS 36297 1905 18 of of IN 36297 1905 19 light light NN 36297 1905 20 and and CC 36297 1905 21 color color NN 36297 1905 22 . . . 36297 1906 1 If if IN 36297 1906 2 we -PRON- PRP 36297 1906 3 did do VBD 36297 1906 4 make make VB 36297 1906 5 these these DT 36297 1906 6 excursions excursion NNS 36297 1906 7 we -PRON- PRP 36297 1906 8 would would MD 36297 1906 9 find find VB 36297 1906 10 associations association NNS 36297 1906 11 almost almost RB 36297 1906 12 universally universally RB 36297 1906 13 answering answer VBG 36297 1906 14 the the DT 36297 1906 15 questions question NNS 36297 1906 16 . . . 36297 1907 1 The the DT 36297 1907 2 question question NN 36297 1907 3 would would MD 36297 1907 4 arise arise VB 36297 1907 5 as as IN 36297 1907 6 to to TO 36297 1907 7 innate innate VB 36297 1907 8 powers power NNS 36297 1907 9 of of IN 36297 1907 10 colors color NNS 36297 1907 11 and and CC 36297 1907 12 we -PRON- PRP 36297 1907 13 would would MD 36297 1907 14 find find VB 36297 1907 15 ourselves -PRON- PRP 36297 1907 16 wondering wonder VBG 36297 1907 17 if if IN 36297 1907 18 all all PDT 36297 1907 19 these these DT 36297 1907 20 powers power NNS 36297 1907 21 were be VBD 36297 1907 22 acquired acquire VBN 36297 1907 23 ( ( -LRB- 36297 1907 24 through through IN 36297 1907 25 associations association NNS 36297 1907 26 ) ) -RRB- 36297 1907 27 and and CC 36297 1907 28 whether whether IN 36297 1907 29 or or CC 36297 1907 30 not not RB 36297 1907 31 some some DT 36297 1907 32 were be VBD 36297 1907 33 innate innate JJ 36297 1907 34 . . . 36297 1908 1 And and CC 36297 1908 2 after after IN 36297 1908 3 many many JJ 36297 1908 4 interesting interesting JJ 36297 1908 5 views view NNS 36297 1908 6 of of IN 36297 1908 7 the the DT 36297 1908 8 intricate intricate JJ 36297 1908 9 subject subject NN 36297 1908 10 we -PRON- PRP 36297 1908 11 would would MD 36297 1908 12 likely likely RB 36297 1908 13 conclude conclude VB 36297 1908 14 that that IN 36297 1908 15 the the DT 36297 1908 16 question question NN 36297 1908 17 of of IN 36297 1908 18 the the DT 36297 1908 19 innateness innateness NN 36297 1908 20 of of IN 36297 1908 21 some some DT 36297 1908 22 of of IN 36297 1908 23 the the DT 36297 1908 24 powers power NNS 36297 1908 25 of of IN 36297 1908 26 color color NN 36297 1908 27 must must MD 36297 1908 28 be be VB 36297 1908 29 left leave VBN 36297 1908 30 unanswered unanswere VBN 36297 1908 31 . . . 36297 1909 1 As as IN 36297 1909 2 an an DT 36297 1909 3 example example NN 36297 1909 4 let let VBD 36297 1909 5 us -PRON- PRP 36297 1909 6 take take VB 36297 1909 7 the the DT 36297 1909 8 case case NN 36297 1909 9 of of IN 36297 1909 10 the the DT 36297 1909 11 restfulness restfulness NN 36297 1909 12 or or CC 36297 1909 13 depression depression NN 36297 1909 14 due due IN 36297 1909 15 to to IN 36297 1909 16 blue blue NNP 36297 1909 17 . . . 36297 1910 1 We -PRON- PRP 36297 1910 2 note note VBP 36297 1910 3 that that IN 36297 1910 4 the the DT 36297 1910 5 blue blue JJ 36297 1910 6 sky sky NN 36297 1910 7 is be VBZ 36297 1910 8 quite quite RB 36297 1910 9 serene serene JJ 36297 1910 10 or or CC 36297 1910 11 tranquil tranquil JJ 36297 1910 12 and and CC 36297 1910 13 we -PRON- PRP 36297 1910 14 find find VBP 36297 1910 15 that that IN 36297 1910 16 the the DT 36297 1910 17 delicate delicate JJ 36297 1910 18 sensibilities sensibility NNS 36297 1910 19 of of IN 36297 1910 20 poets poet NNS 36297 1910 21 verify verify VBP 36297 1910 22 this this DT 36297 1910 23 impression impression NN 36297 1910 24 . . . 36297 1911 1 This this DT 36297 1911 2 association association NN 36297 1911 3 could could MD 36297 1911 4 account account VB 36297 1911 5 for for IN 36297 1911 6 the the DT 36297 1911 7 impression impression NN 36297 1911 8 or or CC 36297 1911 9 feeling feeling NN 36297 1911 10 of of IN 36297 1911 11 tranquillity tranquillity NN 36297 1911 12 associated associate VBN 36297 1911 13 with with IN 36297 1911 14 blue blue NNP 36297 1911 15 . . . 36297 1912 1 On on IN 36297 1912 2 proceeding proceed VBG 36297 1912 3 further further RB 36297 1912 4 , , , 36297 1912 5 we -PRON- PRP 36297 1912 6 would would MD 36297 1912 7 find find VB 36297 1912 8 nature nature NN 36297 1912 9 's 's POS 36297 1912 10 solitudes solitude NNS 36297 1912 11 often often RB 36297 1912 12 tinged tinge VBN 36297 1912 13 with with IN 36297 1912 14 the the DT 36297 1912 15 blue blue JJ 36297 1912 16 skylight skylight NN 36297 1912 17 , , , 36297 1912 18 for for IN 36297 1912 19 these these DT 36297 1912 20 solitudes solitude NNS 36297 1912 21 are be VBP 36297 1912 22 usually usually RB 36297 1912 23 in in IN 36297 1912 24 the the DT 36297 1912 25 shade shade NN 36297 1912 26 . . . 36297 1913 1 Thus thus RB 36297 1913 2 their -PRON- PRP$ 36297 1913 3 restfulness restfulness NN 36297 1913 4 or or CC 36297 1913 5 even even RB 36297 1913 6 depressiveness depressiveness NN 36297 1913 7 may may MD 36297 1913 8 be be VB 36297 1913 9 accounted account VBN 36297 1913 10 for for IN 36297 1913 11 -- -- : 36297 1913 12 partially partially RB 36297 1913 13 at at IN 36297 1913 14 least least JJS 36297 1913 15 . . . 36297 1914 1 These these DT 36297 1914 2 brief brief JJ 36297 1914 3 glimpses glimpse NNS 36297 1914 4 are be VBP 36297 1914 5 presented present VBN 36297 1914 6 in in IN 36297 1914 7 order order NN 36297 1914 8 that that IN 36297 1914 9 they -PRON- PRP 36297 1914 10 may may MD 36297 1914 11 suggest suggest VB 36297 1914 12 to to IN 36297 1914 13 the the DT 36297 1914 14 reader reader NN 36297 1914 15 another another DT 36297 1914 16 trend trend NN 36297 1914 17 of of IN 36297 1914 18 thought thought NN 36297 1914 19 when when WRB 36297 1914 20 certain certain JJ 36297 1914 21 illusions illusion NNS 36297 1914 22 of of IN 36297 1914 23 light light NN 36297 1914 24 and and CC 36297 1914 25 color color NN 36297 1914 26 are be VBP 36297 1914 27 held hold VBN 36297 1914 28 up up RP 36297 1914 29 for for IN 36297 1914 30 analysis analysis NN 36297 1914 31 . . . 36297 1915 1 Besides besides IN 36297 1915 2 these these DT 36297 1915 3 our -PRON- PRP$ 36297 1915 4 individual individual JJ 36297 1915 5 experiences experience NNS 36297 1915 6 which which WDT 36297 1915 7 have have VBP 36297 1915 8 molded mold VBN 36297 1915 9 our -PRON- PRP$ 36297 1915 10 likes like NNS 36297 1915 11 and and CC 36297 1915 12 dislikes dislikes NN 36297 1915 13 must must MD 36297 1915 14 be be VB 36297 1915 15 taken take VBN 36297 1915 16 into into IN 36297 1915 17 account account NN 36297 1915 18 . . . 36297 1916 1 This this DT 36297 1916 2 phase phase NN 36297 1916 3 of of IN 36297 1916 4 light light NN 36297 1916 5 and and CC 36297 1916 6 color color NN 36297 1916 7 has have VBZ 36297 1916 8 been be VBN 36297 1916 9 treated treat VBN 36297 1916 10 elsewhere elsewhere RB 36297 1916 11 . . . 36297 1917 1 [ [ -LRB- 36297 1917 2 6 6 CD 36297 1917 3 ] ] -RRB- 36297 1917 4 A a DT 36297 1917 5 very very RB 36297 1917 6 unusual unusual JJ 36297 1917 7 kind kind NN 36297 1917 8 of of IN 36297 1917 9 optical optical JJ 36297 1917 10 illusion illusion NN 36297 1917 11 is be VBZ 36297 1917 12 illustrated illustrate VBN 36297 1917 13 by by IN 36297 1917 14 the the DT 36297 1917 15 phenomenon phenomenon NN 36297 1917 16 of of IN 36297 1917 17 the the DT 36297 1917 18 apparent apparent JJ 36297 1917 19 ending ending NN 36297 1917 20 of of IN 36297 1917 21 a a DT 36297 1917 22 searchlight searchlight NN 36297 1917 23 beam beam NN 36297 1917 24 which which WDT 36297 1917 25 has have VBZ 36297 1917 26 attracted attract VBN 36297 1917 27 much much JJ 36297 1917 28 attention attention NN 36297 1917 29 in in IN 36297 1917 30 connection connection NN 36297 1917 31 with with IN 36297 1917 32 the the DT 36297 1917 33 powerful powerful JJ 36297 1917 34 searchlights searchlight NNS 36297 1917 35 used use VBN 36297 1917 36 for for IN 36297 1917 37 locating locate VBG 36297 1917 38 aeroplanes aeroplane NNS 36297 1917 39 ( ( -LRB- 36297 1917 40 Fig fig NN 36297 1917 41 . . . 36297 1918 1 77 77 CD 36297 1918 2 ) ) -RRB- 36297 1918 3 . . . 36297 1919 1 For for IN 36297 1919 2 years year NNS 36297 1919 3 the the DT 36297 1919 4 apparent apparent JJ 36297 1919 5 ending ending NN 36297 1919 6 has have VBZ 36297 1919 7 more more RBR 36297 1919 8 or or CC 36297 1919 9 less less RBR 36297 1919 10 carelessly carelessly RB 36297 1919 11 been be VBN 36297 1919 12 attributed attribute VBN 36297 1919 13 to to IN 36297 1919 14 the the DT 36297 1919 15 diminution diminution NN 36297 1919 16 of of IN 36297 1919 17 the the DT 36297 1919 18 density density NN 36297 1919 19 of of IN 36297 1919 20 atmospheric atmospheric JJ 36297 1919 21 fog fog NN 36297 1919 22 or or CC 36297 1919 23 haze haze NN 36297 1919 24 , , , 36297 1919 25 but but CC 36297 1919 26 recently recently RB 36297 1919 27 Karrer[13 karrer[13 NN 36297 1919 28 ] ] -RRB- 36297 1919 29 has have VBZ 36297 1919 30 suggested suggest VBN 36297 1919 31 what what WP 36297 1919 32 appears appear VBZ 36297 1919 33 to to TO 36297 1919 34 be be VB 36297 1919 35 the the DT 36297 1919 36 correct correct JJ 36297 1919 37 explanation explanation NN 36297 1919 38 . . . 36297 1920 1 When when WRB 36297 1920 2 the the DT 36297 1920 3 beam beam NN 36297 1920 4 of of IN 36297 1920 5 light light NN 36297 1920 6 from from IN 36297 1920 7 a a DT 36297 1920 8 powerful powerful JJ 36297 1920 9 searchlight searchlight NN 36297 1920 10 is be VBZ 36297 1920 11 directed direct VBN 36297 1920 12 into into IN 36297 1920 13 space space NN 36297 1920 14 , , , 36297 1920 15 its -PRON- PRP$ 36297 1920 16 path path NN 36297 1920 17 is be VBZ 36297 1920 18 visible visible JJ 36297 1920 19 owing owing NN 36297 1920 20 to to IN 36297 1920 21 the the DT 36297 1920 22 scattering scattering NN 36297 1920 23 of of IN 36297 1920 24 some some DT 36297 1920 25 of of IN 36297 1920 26 the the DT 36297 1920 27 light light NN 36297 1920 28 by by IN 36297 1920 29 dust dust NN 36297 1920 30 and and CC 36297 1920 31 moisture moisture NN 36297 1920 32 particles particle NNS 36297 1920 33 and and CC 36297 1920 34 the the DT 36297 1920 35 molecules molecule NNS 36297 1920 36 of of IN 36297 1920 37 the the DT 36297 1920 38 air air NN 36297 1920 39 itself -PRON- PRP 36297 1920 40 . . . 36297 1921 1 While while IN 36297 1921 2 obviously obviously RB 36297 1921 3 the the DT 36297 1921 4 beam beam NN 36297 1921 5 itself -PRON- PRP 36297 1921 6 must must MD 36297 1921 7 go go VB 36297 1921 8 on on RP 36297 1921 9 indefinitely indefinitely RB 36297 1921 10 , , , 36297 1921 11 its -PRON- PRP$ 36297 1921 12 luminous luminous JJ 36297 1921 13 path path NN 36297 1921 14 appears appear VBZ 36297 1921 15 to to TO 36297 1921 16 end end VB 36297 1921 17 abruptly abruptly RB 36297 1921 18 at at IN 36297 1921 19 no no DT 36297 1921 20 very very RB 36297 1921 21 great great JJ 36297 1921 22 distance distance NN 36297 1921 23 from from IN 36297 1921 24 the the DT 36297 1921 25 source source NN 36297 1921 26 . . . 36297 1922 1 This this DT 36297 1922 2 is be VBZ 36297 1922 3 true true JJ 36297 1922 4 whether whether IN 36297 1922 5 the the DT 36297 1922 6 beam beam NN 36297 1922 7 is be VBZ 36297 1922 8 photographed photograph VBN 36297 1922 9 or or CC 36297 1922 10 viewed view VBN 36297 1922 11 with with IN 36297 1922 12 the the DT 36297 1922 13 naked naked JJ 36297 1922 14 eye eye NN 36297 1922 15 . . . 36297 1923 1 [ [ -LRB- 36297 1923 2 Illustration illustration NN 36297 1923 3 : : : 36297 1923 4 Fig Fig NNP 36297 1923 5 . . . 36297 1924 1 77.--Apparent 77.--apparent CD 36297 1924 2 ending ending NN 36297 1924 3 of of IN 36297 1924 4 a a DT 36297 1924 5 searchlight searchlight JJ 36297 1924 6 beam beam NN 36297 1924 7 . . . 36297 1924 8 ] ] -RRB- 36297 1925 1 The the DT 36297 1925 2 fact fact NN 36297 1925 3 that that IN 36297 1925 4 the the DT 36297 1925 5 appearance appearance NN 36297 1925 6 of of IN 36297 1925 7 the the DT 36297 1925 8 beam beam NN 36297 1925 9 is be VBZ 36297 1925 10 no no RB 36297 1925 11 different different JJ 36297 1925 12 when when WRB 36297 1925 13 it -PRON- PRP 36297 1925 14 is be VBZ 36297 1925 15 directed direct VBN 36297 1925 16 horizontally horizontally RB 36297 1925 17 than than IN 36297 1925 18 when when WRB 36297 1925 19 directed direct VBN 36297 1925 20 vertically vertically RB 36297 1925 21 proved prove VBN 36297 1925 22 that that IN 36297 1925 23 the the DT 36297 1925 24 common common JJ 36297 1925 25 assumption assumption NN 36297 1925 26 pertaining pertain VBG 36297 1925 27 to to IN 36297 1925 28 the the DT 36297 1925 29 ending ending NN 36297 1925 30 of of IN 36297 1925 31 the the DT 36297 1925 32 haze haze NN 36297 1925 33 or or CC 36297 1925 34 fog fog NN 36297 1925 35 is be VBZ 36297 1925 36 untenable untenable JJ 36297 1925 37 . . . 36297 1926 1 Furthermore furthermore RB 36297 1926 2 , , , 36297 1926 3 photometric photometric JJ 36297 1926 4 measurements measurement NNS 36297 1926 5 on on IN 36297 1926 6 the the DT 36297 1926 7 different different JJ 36297 1926 8 portions portion NNS 36297 1926 9 of of IN 36297 1926 10 the the DT 36297 1926 11 beam beam NN 36297 1926 12 as as IN 36297 1926 13 seen see VBN 36297 1926 14 from from IN 36297 1926 15 a a DT 36297 1926 16 position position NN 36297 1926 17 near near IN 36297 1926 18 the the DT 36297 1926 19 searchlight searchlight NN 36297 1926 20 show show NN 36297 1926 21 that that IN 36297 1926 22 the the DT 36297 1926 23 beam beam NN 36297 1926 24 is be VBZ 36297 1926 25 actually actually RB 36297 1926 26 brighter bright JJR 36297 1926 27 at at IN 36297 1926 28 its -PRON- PRP$ 36297 1926 29 outer outer JJ 36297 1926 30 termination termination NN 36297 1926 31 than than IN 36297 1926 32 near near IN 36297 1926 33 its -PRON- PRP$ 36297 1926 34 origin origin NN 36297 1926 35 . . . 36297 1927 1 Again again RB 36297 1927 2 , , , 36297 1927 3 the the DT 36297 1927 4 apparent apparent JJ 36297 1927 5 length length NN 36297 1927 6 of of IN 36297 1927 7 the the DT 36297 1927 8 beam beam NN 36297 1927 9 varies vary VBZ 36297 1927 10 with with IN 36297 1927 11 the the DT 36297 1927 12 position position NN 36297 1927 13 of of IN 36297 1927 14 the the DT 36297 1927 15 observer observer NN 36297 1927 16 , , , 36297 1927 17 and and CC 36297 1927 18 bears bear VBZ 36297 1927 19 a a DT 36297 1927 20 direct direct JJ 36297 1927 21 ratio ratio NN 36297 1927 22 to to IN 36297 1927 23 his -PRON- PRP$ 36297 1927 24 distance distance NN 36297 1927 25 from from IN 36297 1927 26 the the DT 36297 1927 27 searchlight searchlight NN 36297 1927 28 . . . 36297 1928 1 The the DT 36297 1928 2 fact fact NN 36297 1928 3 is be VBZ 36297 1928 4 , , , 36297 1928 5 that that IN 36297 1928 6 the the DT 36297 1928 7 luminous luminous JJ 36297 1928 8 path path NN 36297 1928 9 of of IN 36297 1928 10 the the DT 36297 1928 11 beam beam NN 36297 1928 12 has have VBZ 36297 1928 13 no no DT 36297 1928 14 definite definite JJ 36297 1928 15 ending ending NN 36297 1928 16 , , , 36297 1928 17 and and CC 36297 1928 18 extends extend VBZ 36297 1928 19 to to IN 36297 1928 20 a a DT 36297 1928 21 very very RB 36297 1928 22 great great JJ 36297 1928 23 distance distance NN 36297 1928 24 -- -- : 36297 1928 25 practically practically RB 36297 1928 26 to to IN 36297 1928 27 infinity infinity NN 36297 1928 28 . . . 36297 1929 1 It -PRON- PRP 36297 1929 2 appears appear VBZ 36297 1929 3 to to TO 36297 1929 4 be be VB 36297 1929 5 sharply sharply RB 36297 1929 6 cut cut VBN 36297 1929 7 off off RP 36297 1929 8 for for IN 36297 1929 9 the the DT 36297 1929 10 same same JJ 36297 1929 11 reason reason NN 36297 1929 12 that that IN 36297 1929 13 the the DT 36297 1929 14 boundary boundary NN 36297 1929 15 between between IN 36297 1929 16 earth earth NN 36297 1929 17 and and CC 36297 1929 18 sky sky NN 36297 1929 19 in in IN 36297 1929 20 a a DT 36297 1929 21 flat flat JJ 36297 1929 22 landscape landscape NN 36297 1929 23 is be VBZ 36297 1929 24 a a DT 36297 1929 25 sharp sharp JJ 36297 1929 26 line line NN 36297 1929 27 . . . 36297 1930 1 Just just RB 36297 1930 2 as as IN 36297 1930 3 the the DT 36297 1930 4 horizon horizon NN 36297 1930 5 recedes recede VBZ 36297 1930 6 when when WRB 36297 1930 7 the the DT 36297 1930 8 landscape landscape NN 36297 1930 9 is be VBZ 36297 1930 10 viewed view VBN 36297 1930 11 from from IN 36297 1930 12 an an DT 36297 1930 13 elevation elevation NN 36297 1930 14 , , , 36297 1930 15 so so CC 36297 1930 16 the the DT 36297 1930 17 beam beam NN 36297 1930 18 appears appear VBZ 36297 1930 19 longer long RBR 36297 1930 20 when when WRB 36297 1930 21 one one PRP 36297 1930 22 's 's POS 36297 1930 23 distance distance NN 36297 1930 24 from from IN 36297 1930 25 it -PRON- PRP 36297 1930 26 is be VBZ 36297 1930 27 increased increase VBN 36297 1930 28 . . . 36297 1931 1 The the DT 36297 1931 2 outer outer JJ 36297 1931 3 portion portion NN 36297 1931 4 appears appear VBZ 36297 1931 5 brighter bright JJR 36297 1931 6 , , , 36297 1931 7 because because IN 36297 1931 8 here here RB 36297 1931 9 the the DT 36297 1931 10 line line NN 36297 1931 11 of of IN 36297 1931 12 sight sight NN 36297 1931 13 pierces pierce VBZ 36297 1931 14 it -PRON- PRP 36297 1931 15 to to IN 36297 1931 16 great great JJ 36297 1931 17 depth depth NN 36297 1931 18 . . . 36297 1932 1 That that IN 36297 1932 2 the the DT 36297 1932 3 ending ending NN 36297 1932 4 of of IN 36297 1932 5 the the DT 36297 1932 6 beam beam NN 36297 1932 7 appears appear VBZ 36297 1932 8 _ _ NNP 36297 1932 9 close close JJ 36297 1932 10 at at IN 36297 1932 11 hand hand NN 36297 1932 12 _ _ NNP 36297 1932 13 is be VBZ 36297 1932 14 no no DT 36297 1932 15 doubt doubt RB 36297 1932 16 partly partly RB 36297 1932 17 due due JJ 36297 1932 18 to to IN 36297 1932 19 the the DT 36297 1932 20 brightness brightness NN 36297 1932 21 distribution distribution NN 36297 1932 22 , , , 36297 1932 23 but but CC 36297 1932 24 is be VBZ 36297 1932 25 also also RB 36297 1932 26 a a DT 36297 1932 27 matter matter NN 36297 1932 28 of of IN 36297 1932 29 perspective perspective NN 36297 1932 30 arising arise VBG 36297 1932 31 from from IN 36297 1932 32 the the DT 36297 1932 33 manner manner NN 36297 1932 34 in in IN 36297 1932 35 which which WDT 36297 1932 36 the the DT 36297 1932 37 beam beam NN 36297 1932 38 is be VBZ 36297 1932 39 adjusted adjust VBN 36297 1932 40 . . . 36297 1933 1 Searchlight searchlight NN 36297 1933 2 operators operator NNS 36297 1933 3 in in IN 36297 1933 4 the the DT 36297 1933 5 army army NN 36297 1933 6 were be VBD 36297 1933 7 instructed instruct VBN 36297 1933 8 to to TO 36297 1933 9 adjust adjust VB 36297 1933 10 the the DT 36297 1933 11 light light NN 36297 1933 12 to to TO 36297 1933 13 throw throw VB 36297 1933 14 a a DT 36297 1933 15 parallel parallel JJ 36297 1933 16 beam beam NN 36297 1933 17 . . . 36297 1934 1 Accordingly accordingly RB 36297 1934 2 , , , 36297 1934 3 the the DT 36297 1934 4 adjustments adjustment NNS 36297 1934 5 were be VBD 36297 1934 6 so so RB 36297 1934 7 made make VBN 36297 1934 8 that that IN 36297 1934 9 the the DT 36297 1934 10 beam beam NN 36297 1934 11 appeared appear VBD 36297 1934 12 the the DT 36297 1934 13 same same JJ 36297 1934 14 width width NN 36297 1934 15 at at IN 36297 1934 16 its -PRON- PRP$ 36297 1934 17 outer outer JJ 36297 1934 18 extremity extremity NN 36297 1934 19 as as IN 36297 1934 20 at at IN 36297 1934 21 its -PRON- PRP$ 36297 1934 22 base base NN 36297 1934 23 . . . 36297 1935 1 The the DT 36297 1935 2 result result NN 36297 1935 3 seems seem VBZ 36297 1935 4 to to TO 36297 1935 5 be be VB 36297 1935 6 a a DT 36297 1935 7 short short JJ 36297 1935 8 parallel parallel JJ 36297 1935 9 shaft shaft NN 36297 1935 10 of of IN 36297 1935 11 light light NN 36297 1935 12 , , , 36297 1935 13 but but CC 36297 1935 14 is be VBZ 36297 1935 15 really really RB 36297 1935 16 a a DT 36297 1935 17 divergent divergent JJ 36297 1935 18 cone cone NN 36297 1935 19 of of IN 36297 1935 20 infinite infinite JJ 36297 1935 21 extent extent NN 36297 1935 22 , , , 36297 1935 23 its -PRON- PRP$ 36297 1935 24 angle angle NN 36297 1935 25 of of IN 36297 1935 26 divergence divergence NN 36297 1935 27 being be VBG 36297 1935 28 such such JJ 36297 1935 29 as as IN 36297 1935 30 exactly exactly RB 36297 1935 31 to to TO 36297 1935 32 offset offset VB 36297 1935 33 the the DT 36297 1935 34 effects effect NNS 36297 1935 35 of of IN 36297 1935 36 perspective perspective NN 36297 1935 37 . . . 36297 1936 1 If if IN 36297 1936 2 the the DT 36297 1936 3 beam beam NN 36297 1936 4 were be VBD 36297 1936 5 a a DT 36297 1936 6 truly truly RB 36297 1936 7 parallel parallel JJ 36297 1936 8 one one NN 36297 1936 9 it -PRON- PRP 36297 1936 10 would would MD 36297 1936 11 seem seem VB 36297 1936 12 to to TO 36297 1936 13 come come VB 36297 1936 14 to to IN 36297 1936 15 a a DT 36297 1936 16 point point NN 36297 1936 17 , , , 36297 1936 18 just just RB 36297 1936 19 as as IN 36297 1936 20 the the DT 36297 1936 21 edges edge NNS 36297 1936 22 of of IN 36297 1936 23 a a DT 36297 1936 24 long long JJ 36297 1936 25 straight straight JJ 36297 1936 26 stretch stretch NN 36297 1936 27 of of IN 36297 1936 28 country country NN 36297 1936 29 road road NN 36297 1936 30 seem seem VBP 36297 1936 31 to to TO 36297 1936 32 meet meet VB 36297 1936 33 at at IN 36297 1936 34 the the DT 36297 1936 35 horizon horizon NN 36297 1936 36 . . . 36297 1937 1 If if IN 36297 1937 2 the the DT 36297 1937 3 sides side NNS 36297 1937 4 of of IN 36297 1937 5 the the DT 36297 1937 6 road road NN 36297 1937 7 were be VBD 36297 1937 8 not not RB 36297 1937 9 parallel parallel JJ 36297 1937 10 , , , 36297 1937 11 but but CC 36297 1937 12 diverged diverge VBN 36297 1937 13 from from IN 36297 1937 14 the the DT 36297 1937 15 observer observer NN 36297 1937 16 's 's POS 36297 1937 17 eye eye NN 36297 1937 18 at at IN 36297 1937 19 exactly exactly RB 36297 1937 20 the the DT 36297 1937 21 rate rate NN 36297 1937 22 at at IN 36297 1937 23 which which WDT 36297 1937 24 they -PRON- PRP 36297 1937 25 ordinarily ordinarily RB 36297 1937 26 would would MD 36297 1937 27 appear appear VB 36297 1937 28 to to TO 36297 1937 29 converge converge VB 36297 1937 30 , , , 36297 1937 31 then then RB 36297 1937 32 the the DT 36297 1937 33 road road NN 36297 1937 34 would would MD 36297 1937 35 seem seem VB 36297 1937 36 to to TO 36297 1937 37 be be VB 36297 1937 38 as as RB 36297 1937 39 wide wide JJ 36297 1937 40 where where WRB 36297 1937 41 it -PRON- PRP 36297 1937 42 passed pass VBD 36297 1937 43 out out RP 36297 1937 44 at at IN 36297 1937 45 the the DT 36297 1937 46 horizon horizon NN 36297 1937 47 as as IN 36297 1937 48 at at IN 36297 1937 49 the the DT 36297 1937 50 observer observer NN 36297 1937 51 's 's POS 36297 1937 52 feet foot NNS 36297 1937 53 . . . 36297 1938 1 If if IN 36297 1938 2 there there EX 36297 1938 3 were be VBD 36297 1938 4 no no DT 36297 1938 5 other other JJ 36297 1938 6 means mean NNS 36297 1938 7 in in IN 36297 1938 8 the the DT 36297 1938 9 landscape landscape NN 36297 1938 10 of of IN 36297 1938 11 judging judge VBG 36297 1938 12 the the DT 36297 1938 13 distance distance NN 36297 1938 14 of of IN 36297 1938 15 the the DT 36297 1938 16 horizon horizon NN 36297 1938 17 than than IN 36297 1938 18 by by IN 36297 1938 19 the the DT 36297 1938 20 perspective perspective NN 36297 1938 21 afforded afford VBN 36297 1938 22 by by IN 36297 1938 23 the the DT 36297 1938 24 road road NN 36297 1938 25 , , , 36297 1938 26 it -PRON- PRP 36297 1938 27 would would MD 36297 1938 28 likely likely RB 36297 1938 29 be be VB 36297 1938 30 inferred infer VBN 36297 1938 31 that that IN 36297 1938 32 the the DT 36297 1938 33 road road NN 36297 1938 34 only only RB 36297 1938 35 extended extend VBD 36297 1938 36 a a DT 36297 1938 37 short short JJ 36297 1938 38 distance distance NN 36297 1938 39 on on IN 36297 1938 40 the the DT 36297 1938 41 level level NN 36297 1938 42 , , , 36297 1938 43 and and CC 36297 1938 44 then then RB 36297 1938 45 went go VBD 36297 1938 46 down down IN 36297 1938 47 a a DT 36297 1938 48 hill hill NN 36297 1938 49 , , , 36297 1938 50 that that RB 36297 1938 51 is is RB 36297 1938 52 , , , 36297 1938 53 passed pass VBN 36297 1938 54 abruptly abruptly RB 36297 1938 55 from from IN 36297 1938 56 the the DT 36297 1938 57 observer observer NN 36297 1938 58 's 's POS 36297 1938 59 view view NN 36297 1938 60 . . . 36297 1939 1 These these DT 36297 1939 2 conditions condition NNS 36297 1939 3 obtain obtain VBP 36297 1939 4 ideally ideally RB 36297 1939 5 in in IN 36297 1939 6 the the DT 36297 1939 7 case case NN 36297 1939 8 of of IN 36297 1939 9 the the DT 36297 1939 10 searchlight searchlight NN 36297 1939 11 beam beam NN 36297 1939 12 . . . 36297 1940 1 There there EX 36297 1940 2 is be VBZ 36297 1940 3 no no DT 36297 1940 4 other other JJ 36297 1940 5 means mean NNS 36297 1940 6 of of IN 36297 1940 7 judging judge VBG 36297 1940 8 the the DT 36297 1940 9 position position NN 36297 1940 10 in in IN 36297 1940 11 space space NN 36297 1940 12 of of IN 36297 1940 13 the the DT 36297 1940 14 " " `` 36297 1940 15 end end NN 36297 1940 16 " " '' 36297 1940 17 of of IN 36297 1940 18 an an DT 36297 1940 19 unobstructed unobstructed JJ 36297 1940 20 searchlight searchlight NN 36297 1940 21 beam beam NN 36297 1940 22 than than IN 36297 1940 23 by by IN 36297 1940 24 the the DT 36297 1940 25 perspective perspective NN 36297 1940 26 of of IN 36297 1940 27 the the DT 36297 1940 28 beam beam NN 36297 1940 29 itself -PRON- PRP 36297 1940 30 , , , 36297 1940 31 and and CC 36297 1940 32 the the DT 36297 1940 33 operator operator NN 36297 1940 34 in in IN 36297 1940 35 adjusting adjust VBG 36297 1940 36 it -PRON- PRP 36297 1940 37 to to TO 36297 1940 38 appear appear VB 36297 1940 39 parallel parallel JJ 36297 1940 40 eliminates eliminate NNS 36297 1940 41 the the DT 36297 1940 42 perspective perspective NN 36297 1940 43 . . . 36297 1941 1 The the DT 36297 1941 2 angle angle NN 36297 1941 3 at at IN 36297 1941 4 which which WDT 36297 1941 5 the the DT 36297 1941 6 beam beam NN 36297 1941 7 must must MD 36297 1941 8 diverge diverge VB 36297 1941 9 to to TO 36297 1941 10 appear appear VB 36297 1941 11 parallel parallel JJ 36297 1941 12 to to IN 36297 1941 13 an an DT 36297 1941 14 observer observer NN 36297 1941 15 depends depend VBZ 36297 1941 16 upon upon IN 36297 1941 17 the the DT 36297 1941 18 distance distance NN 36297 1941 19 of of IN 36297 1941 20 the the DT 36297 1941 21 observer observer NN 36297 1941 22 from from IN 36297 1941 23 the the DT 36297 1941 24 searchlight searchlight NN 36297 1941 25 . . . 36297 1942 1 A a DT 36297 1942 2 beam beam NN 36297 1942 3 which which WDT 36297 1942 4 seems seem VBZ 36297 1942 5 parallel parallel JJ 36297 1942 6 to to IN 36297 1942 7 a a DT 36297 1942 8 person person NN 36297 1942 9 close close JJ 36297 1942 10 to to IN 36297 1942 11 it -PRON- PRP 36297 1942 12 will will MD 36297 1942 13 not not RB 36297 1942 14 appear appear VB 36297 1942 15 so so RB 36297 1942 16 at at IN 36297 1942 17 a a DT 36297 1942 18 distance distance NN 36297 1942 19 . . . 36297 1943 1 This this DT 36297 1943 2 fact fact NN 36297 1943 3 probably probably RB 36297 1943 4 accounts account VBZ 36297 1943 5 for for IN 36297 1943 6 the the DT 36297 1943 7 difficulties difficulty NNS 36297 1943 8 encountered encounter VBN 36297 1943 9 during during IN 36297 1943 10 " " `` 36297 1943 11 searchlight searchlight NN 36297 1943 12 drill drill NN 36297 1943 13 " " '' 36297 1943 14 in in IN 36297 1943 15 the the DT 36297 1943 16 army army NN 36297 1943 17 in in IN 36297 1943 18 getting get VBG 36297 1943 19 a a DT 36297 1943 20 beam beam NN 36297 1943 21 which which WDT 36297 1943 22 satisfied satisfy VBD 36297 1943 23 both both CC 36297 1943 24 the the DT 36297 1943 25 private private JJ 36297 1943 26 operating operate VBG 36297 1943 27 the the DT 36297 1943 28 lamp lamp NN 36297 1943 29 and and CC 36297 1943 30 the the DT 36297 1943 31 officer officer NN 36297 1943 32 down down IN 36297 1943 33 the the DT 36297 1943 34 field field NN 36297 1943 35 as as IN 36297 1943 36 to to IN 36297 1943 37 its -PRON- PRP$ 36297 1943 38 parallelity parallelity NN 36297 1943 39 . . . 36297 1944 1 To to TO 36297 1944 2 summarize summarize VB 36297 1944 3 , , , 36297 1944 4 the the DT 36297 1944 5 apparent apparent JJ 36297 1944 6 abrupt abrupt JJ 36297 1944 7 ending ending NN 36297 1944 8 of of IN 36297 1944 9 a a DT 36297 1944 10 searchlight searchlight JJ 36297 1944 11 beam beam NN 36297 1944 12 is be VBZ 36297 1944 13 purely purely RB 36297 1944 14 an an DT 36297 1944 15 optical optical JJ 36297 1944 16 illusion illusion NN 36297 1944 17 . . . 36297 1945 1 It -PRON- PRP 36297 1945 2 really really RB 36297 1945 3 has have VBZ 36297 1945 4 no no DT 36297 1945 5 ending ending NN 36297 1945 6 ; ; : 36297 1945 7 it -PRON- PRP 36297 1945 8 extends extend VBZ 36297 1945 9 to to IN 36297 1945 10 infinity infinity NN 36297 1945 11 . . . 36297 1946 1 XI XI NNP 36297 1946 2 NATURE nature VBP 36297 1946 3 Visual visual JJ 36297 1946 4 illusions illusion NNS 36297 1946 5 abound abound VBP 36297 1946 6 everywhere everywhere RB 36297 1946 7 , , , 36297 1946 8 and and CC 36297 1946 9 there there EX 36297 1946 10 are be VBP 36297 1946 11 a a DT 36297 1946 12 number number NN 36297 1946 13 of of IN 36297 1946 14 special special JJ 36297 1946 15 interest interest NN 36297 1946 16 in in IN 36297 1946 17 nature nature NN 36297 1946 18 . . . 36297 1947 1 Inasmuch inasmuch IN 36297 1947 2 as as IN 36297 1947 3 these these DT 36297 1947 4 are be VBP 36297 1947 5 representative representative JJ 36297 1947 6 of of IN 36297 1947 7 a a DT 36297 1947 8 wide wide JJ 36297 1947 9 range range NN 36297 1947 10 of of IN 36297 1947 11 conditions condition NNS 36297 1947 12 and and CC 36297 1947 13 are be VBP 36297 1947 14 usually usually RB 36297 1947 15 within within IN 36297 1947 16 the the DT 36297 1947 17 possible possible JJ 36297 1947 18 experience experience NN 36297 1947 19 of of IN 36297 1947 20 nearly nearly RB 36297 1947 21 everyone everyone NN 36297 1947 22 daily daily RB 36297 1947 23 , , , 36297 1947 24 they -PRON- PRP 36297 1947 25 appear appear VBP 36297 1947 26 worthy worthy JJ 36297 1947 27 of of IN 36297 1947 28 special special JJ 36297 1947 29 consideration consideration NN 36297 1947 30 . . . 36297 1948 1 Some some DT 36297 1948 2 of of IN 36297 1948 3 these these DT 36297 1948 4 have have VBP 36297 1948 5 been be VBN 36297 1948 6 casually casually RB 36297 1948 7 mentioned mention VBN 36297 1948 8 in in IN 36297 1948 9 other other JJ 36297 1948 10 chapters chapter NNS 36297 1948 11 but but CC 36297 1948 12 further further JJ 36297 1948 13 data datum NNS 36297 1948 14 may may MD 36297 1948 15 be be VB 36297 1948 16 of of IN 36297 1948 17 interest interest NN 36297 1948 18 . . . 36297 1949 1 No no DT 36297 1949 2 agreement agreement NN 36297 1949 3 has have VBZ 36297 1949 4 been be VBN 36297 1949 5 reached reach VBN 36297 1949 6 in in IN 36297 1949 7 some some DT 36297 1949 8 cases case NNS 36297 1949 9 in in IN 36297 1949 10 the the DT 36297 1949 11 many many JJ 36297 1949 12 suggested suggest VBN 36297 1949 13 explanations explanation NNS 36297 1949 14 and and CC 36297 1949 15 little little JJ 36297 1949 16 or or CC 36297 1949 17 no no DT 36297 1949 18 attempt attempt NN 36297 1949 19 of of IN 36297 1949 20 this this DT 36297 1949 21 character character NN 36297 1949 22 will will MD 36297 1949 23 be be VB 36297 1949 24 made make VBN 36297 1949 25 in in IN 36297 1949 26 the the DT 36297 1949 27 following follow VBG 36297 1949 28 paragraphs paragraph NNS 36297 1949 29 . . . 36297 1950 1 Many many JJ 36297 1950 2 illusions illusion NNS 36297 1950 3 which which WDT 36297 1950 4 may may MD 36297 1950 5 be be VB 36297 1950 6 seen see VBN 36297 1950 7 in in IN 36297 1950 8 nature nature NN 36297 1950 9 will will MD 36297 1950 10 be be VB 36297 1950 11 passed pass VBN 36297 1950 12 by by RP 36297 1950 13 because because IN 36297 1950 14 their -PRON- PRP$ 36297 1950 15 existence existence NN 36297 1950 16 should should MD 36297 1950 17 be be VB 36297 1950 18 obvious obvious JJ 36297 1950 19 after after IN 36297 1950 20 reading read VBG 36297 1950 21 the the DT 36297 1950 22 preceding precede VBG 36297 1950 23 chapters chapter NNS 36297 1950 24 . . . 36297 1951 1 For for IN 36297 1951 2 example example NN 36297 1951 3 , , , 36297 1951 4 a a DT 36297 1951 5 tree tree NN 36297 1951 6 appears appear VBZ 36297 1951 7 longer long RBR 36297 1951 8 when when WRB 36297 1951 9 standing stand VBG 36297 1951 10 than than IN 36297 1951 11 after after IN 36297 1951 12 it -PRON- PRP 36297 1951 13 has have VBZ 36297 1951 14 been be VBN 36297 1951 15 felled fell VBN 36297 1951 16 for for IN 36297 1951 17 the the DT 36297 1951 18 same same JJ 36297 1951 19 reason reason NN 36297 1951 20 that that WDT 36297 1951 21 we -PRON- PRP 36297 1951 22 overestimate overestimate VBP 36297 1951 23 vertical vertical JJ 36297 1951 24 lines line NNS 36297 1951 25 in in IN 36297 1951 26 comparison comparison NN 36297 1951 27 with with IN 36297 1951 28 horizontal horizontal JJ 36297 1951 29 ones one NNS 36297 1951 30 . . . 36297 1952 1 The the DT 36297 1952 2 apparent apparent JJ 36297 1952 3 movement movement NN 36297 1952 4 of of IN 36297 1952 5 the the DT 36297 1952 6 sun sun NN 36297 1952 7 , , , 36297 1952 8 moon moon NN 36297 1952 9 , , , 36297 1952 10 and and CC 36297 1952 11 stars star NNS 36297 1952 12 , , , 36297 1952 13 when when WRB 36297 1952 14 clouds cloud NNS 36297 1952 15 are be VBP 36297 1952 16 floating float VBG 36297 1952 17 past past NN 36297 1952 18 , , , 36297 1952 19 is be VBZ 36297 1952 20 a a DT 36297 1952 21 powerful powerful JJ 36297 1952 22 , , , 36297 1952 23 though though IN 36297 1952 24 commonplace commonplace NN 36297 1952 25 , , , 36297 1952 26 illusion illusion NN 36297 1952 27 but but CC 36297 1952 28 we -PRON- PRP 36297 1952 29 are be VBP 36297 1952 30 more more RBR 36297 1952 31 specifically specifically RB 36297 1952 32 interested interested JJ 36297 1952 33 in in IN 36297 1952 34 static static JJ 36297 1952 35 illusions illusion NNS 36297 1952 36 . . . 36297 1953 1 However however RB 36297 1953 2 , , , 36297 1953 3 it -PRON- PRP 36297 1953 4 is be VBZ 36297 1953 5 of of IN 36297 1953 6 interest interest NN 36297 1953 7 to to TO 36297 1953 8 recall recall VB 36297 1953 9 the the DT 36297 1953 10 effect effect NN 36297 1953 11 of of IN 36297 1953 12 involuntary involuntary JJ 36297 1953 13 eye eye NN 36297 1953 14 - - HYPH 36297 1953 15 movements movement NNS 36297 1953 16 or or CC 36297 1953 17 of of IN 36297 1953 18 fluctuation fluctuation NN 36297 1953 19 in in IN 36297 1953 20 fixation fixation NN 36297 1953 21 because because IN 36297 1953 22 this this DT 36297 1953 23 factor factor NN 36297 1953 24 in in IN 36297 1953 25 vision vision NN 36297 1953 26 is be VBZ 36297 1953 27 important important JJ 36297 1953 28 in in IN 36297 1953 29 many many JJ 36297 1953 30 illusions illusion NNS 36297 1953 31 . . . 36297 1954 1 It -PRON- PRP 36297 1954 2 is be VBZ 36297 1954 3 demonstrated demonstrate VBN 36297 1954 4 by by IN 36297 1954 5 lying lie VBG 36297 1954 6 face face NN 36297 1954 7 upward upward RB 36297 1954 8 on on IN 36297 1954 9 a a DT 36297 1954 10 starlit starlit VBN 36297 1954 11 night night NN 36297 1954 12 and and CC 36297 1954 13 fixing fix VBG 36297 1954 14 the the DT 36297 1954 15 gaze gaze NN 36297 1954 16 upon upon IN 36297 1954 17 a a DT 36297 1954 18 star star NN 36297 1954 19 . . . 36297 1955 1 The the DT 36297 1955 2 latter latter JJ 36297 1955 3 appears appear VBZ 36297 1955 4 to to TO 36297 1955 5 move move VB 36297 1955 6 more more RBR 36297 1955 7 or or CC 36297 1955 8 less less RBR 36297 1955 9 jerkily jerkily RB 36297 1955 10 over over IN 36297 1955 11 its -PRON- PRP$ 36297 1955 12 dark dark JJ 36297 1955 13 background background NN 36297 1955 14 . . . 36297 1956 1 The the DT 36297 1956 2 magnitude magnitude NN 36297 1956 3 and and CC 36297 1956 4 involuntary involuntary JJ 36297 1956 5 nature nature NN 36297 1956 6 of of IN 36297 1956 7 these these DT 36297 1956 8 eye eye NN 36297 1956 9 - - HYPH 36297 1956 10 movements movement NNS 36297 1956 11 is be VBZ 36297 1956 12 demonstrated demonstrate VBN 36297 1956 13 in in IN 36297 1956 14 this this DT 36297 1956 15 manner manner NN 36297 1956 16 very very RB 36297 1956 17 effectively effectively RB 36297 1956 18 . . . 36297 1957 1 The the DT 36297 1957 2 effect effect NN 36297 1957 3 sometimes sometimes RB 36297 1957 4 known know VBN 36297 1957 5 as as IN 36297 1957 6 aerial aerial JJ 36297 1957 7 perspective perspective NN 36297 1957 8 has have VBZ 36297 1957 9 been be VBN 36297 1957 10 mentioned mention VBN 36297 1957 11 heretofore heretofore RB 36297 1957 12 . . . 36297 1958 1 The the DT 36297 1958 2 atmosphere atmosphere NN 36297 1958 3 is be VBZ 36297 1958 4 not not RB 36297 1958 5 perfectly perfectly RB 36297 1958 6 transparent transparent JJ 36297 1958 7 or or CC 36297 1958 8 colorless colorless JJ 36297 1958 9 and and CC 36297 1958 10 is be VBZ 36297 1958 11 not not RB 36297 1958 12 homogeneous homogeneous JJ 36297 1958 13 from from IN 36297 1958 14 an an DT 36297 1958 15 optical optical JJ 36297 1958 16 standpoint standpoint NN 36297 1958 17 . . . 36297 1959 1 It -PRON- PRP 36297 1959 2 scatters scatter VBZ 36297 1959 3 rays ray NNS 36297 1959 4 of of IN 36297 1959 5 the the DT 36297 1959 6 shorter short JJR 36297 1959 7 wave wave NN 36297 1959 8 - - HYPH 36297 1959 9 lengths length NNS 36297 1959 10 more more JJR 36297 1959 11 than than IN 36297 1959 12 those those DT 36297 1959 13 of of IN 36297 1959 14 the the DT 36297 1959 15 longer long JJR 36297 1959 16 wave wave NN 36297 1959 17 - - HYPH 36297 1959 18 lengths length NNS 36297 1959 19 . . . 36297 1960 1 Hence hence RB 36297 1960 2 it -PRON- PRP 36297 1960 3 appears appear VBZ 36297 1960 4 of of IN 36297 1960 5 a a DT 36297 1960 6 bluish bluish JJ 36297 1960 7 tint tint NN 36297 1960 8 and and CC 36297 1960 9 anything anything NN 36297 1960 10 seen see VBN 36297 1960 11 through through IN 36297 1960 12 great great JJ 36297 1960 13 distances distance NNS 36297 1960 14 of of IN 36297 1960 15 it -PRON- PRP 36297 1960 16 tends tend VBZ 36297 1960 17 toward toward IN 36297 1960 18 a a DT 36297 1960 19 reddish reddish JJ 36297 1960 20 color color NN 36297 1960 21 . . . 36297 1961 1 The the DT 36297 1961 2 blue blue JJ 36297 1961 3 sky sky NN 36297 1961 4 and and CC 36297 1961 5 the the DT 36297 1961 6 redness redness NN 36297 1961 7 of of IN 36297 1961 8 the the DT 36297 1961 9 setting set VBG 36297 1961 10 sun sun NN 36297 1961 11 are be VBP 36297 1961 12 results result NNS 36297 1961 13 of of IN 36297 1961 14 this this DT 36297 1961 15 cause cause NN 36297 1961 16 . . . 36297 1962 1 Distant distant JJ 36297 1962 2 signal signal NN 36297 1962 3 - - HYPH 36297 1962 4 lights light NNS 36297 1962 5 are be VBP 36297 1962 6 reddened redden VBN 36297 1962 7 , , , 36297 1962 8 due due IN 36297 1962 9 to to IN 36297 1962 10 the the DT 36297 1962 11 decrease decrease NN 36297 1962 12 in in IN 36297 1962 13 the the DT 36297 1962 14 rays ray NNS 36297 1962 15 of of IN 36297 1962 16 shorter short JJR 36297 1962 17 wave wave NN 36297 1962 18 - - HYPH 36297 1962 19 length length NN 36297 1962 20 by by IN 36297 1962 21 scattering scatter VBG 36297 1962 22 . . . 36297 1963 1 Apparently apparently RB 36297 1963 2 we -PRON- PRP 36297 1963 3 have have VBP 36297 1963 4 come come VBN 36297 1963 5 to to TO 36297 1963 6 estimate estimate VB 36297 1963 7 distance distance NN 36297 1963 8 to to IN 36297 1963 9 some some DT 36297 1963 10 extent extent NN 36297 1963 11 through through IN 36297 1963 12 the the DT 36297 1963 13 amount amount NN 36297 1963 14 of of IN 36297 1963 15 blurring blur VBG 36297 1963 16 and and CC 36297 1963 17 tinting tinting NN 36297 1963 18 superposed superpose VBN 36297 1963 19 upon upon IN 36297 1963 20 the the DT 36297 1963 21 distant distant JJ 36297 1963 22 scene scene NN 36297 1963 23 . . . 36297 1964 1 In in IN 36297 1964 2 the the DT 36297 1964 3 high high JJ 36297 1964 4 Rockies rockie NNS 36297 1964 5 where where WRB 36297 1964 6 the the DT 36297 1964 7 atmosphere atmosphere NN 36297 1964 8 is be VBZ 36297 1964 9 unusually unusually RB 36297 1964 10 clear clear JJ 36297 1964 11 , , , 36297 1964 12 stretches stretch NNS 36297 1964 13 of of IN 36297 1964 14 fifty fifty CD 36297 1964 15 miles mile NNS 36297 1964 16 of of IN 36297 1964 17 atmosphere atmosphere NN 36297 1964 18 lying lie VBG 36297 1964 19 between between IN 36297 1964 20 the the DT 36297 1964 21 observer observer NN 36297 1964 22 and and CC 36297 1964 23 the the DT 36297 1964 24 distant distant JJ 36297 1964 25 peaks peak NNS 36297 1964 26 will will MD 36297 1964 27 show show VB 36297 1964 28 very very RB 36297 1964 29 little little JJ 36297 1964 30 haze haze NN 36297 1964 31 . . . 36297 1965 1 A a DT 36297 1965 2 person person NN 36297 1965 3 inexperienced inexperienced JJ 36297 1965 4 in in IN 36297 1965 5 the the DT 36297 1965 6 region region NN 36297 1965 7 is be VBZ 36297 1965 8 likely likely JJ 36297 1965 9 to to TO 36297 1965 10 construe construe VB 36297 1965 11 this this DT 36297 1965 12 absence absence NN 36297 1965 13 of of IN 36297 1965 14 haze haze NN 36297 1965 15 as as IN 36297 1965 16 a a DT 36297 1965 17 shorter short JJR 36297 1965 18 distance distance NN 36297 1965 19 than than IN 36297 1965 20 the the DT 36297 1965 21 reality reality NN 36297 1965 22 and and CC 36297 1965 23 many many JJ 36297 1965 24 amusing amusing JJ 36297 1965 25 incidents incident NNS 36297 1965 26 and and CC 36297 1965 27 ludicrous ludicrous JJ 36297 1965 28 mistakes mistake NNS 36297 1965 29 are be VBP 36297 1965 30 charged charge VBN 36297 1965 31 against against IN 36297 1965 32 the the DT 36297 1965 33 tenderfoot tenderfoot NN 36297 1965 34 in in IN 36297 1965 35 the the DT 36297 1965 36 Rockies Rockies NNPS 36297 1965 37 . . . 36297 1966 1 After after IN 36297 1966 2 misjudging misjudge VBG 36297 1966 3 distance distance NN 36297 1966 4 so so RB 36297 1966 5 often often RB 36297 1966 6 to to IN 36297 1966 7 his -PRON- PRP$ 36297 1966 8 own own JJ 36297 1966 9 discomfiture discomfiture NN 36297 1966 10 a a DT 36297 1966 11 tourist tourist NN 36297 1966 12 is be VBZ 36297 1966 13 said say VBN 36297 1966 14 to to TO 36297 1966 15 have have VB 36297 1966 16 been be VBN 36297 1966 17 found find VBN 36297 1966 18 disrobing disrobe VBG 36297 1966 19 preparatory preparatory JJ 36297 1966 20 to to IN 36297 1966 21 swimming swimming NN 36297 1966 22 across across IN 36297 1966 23 an an DT 36297 1966 24 irrigation irrigation NN 36297 1966 25 ditch ditch NN 36297 1966 26 . . . 36297 1967 1 He -PRON- PRP 36297 1967 2 had have VBD 36297 1967 3 lost lose VBN 36297 1967 4 confidence confidence NN 36297 1967 5 in in IN 36297 1967 6 his -PRON- PRP$ 36297 1967 7 judgment judgment NN 36297 1967 8 of of IN 36297 1967 9 distance distance NN 36297 1967 10 and and CC 36297 1967 11 was be VBD 36297 1967 12 going go VBG 36297 1967 13 to to TO 36297 1967 14 assume assume VB 36297 1967 15 the the DT 36297 1967 16 risk risk NN 36297 1967 17 of of IN 36297 1967 18 jumping jump VBG 36297 1967 19 across across IN 36297 1967 20 what what WP 36297 1967 21 appeared appear VBD 36297 1967 22 to to TO 36297 1967 23 be be VB 36297 1967 24 a a DT 36297 1967 25 ditch ditch NN 36297 1967 26 but but CC 36297 1967 27 what what WP 36297 1967 28 might may MD 36297 1967 29 be be VB 36297 1967 30 a a DT 36297 1967 31 broad broad JJ 36297 1967 32 river river NN 36297 1967 33 . . . 36297 1968 1 Of of RB 36297 1968 2 course course RB 36297 1968 3 , , , 36297 1968 4 this this DT 36297 1968 5 story story NN 36297 1968 6 might may MD 36297 1968 7 not not RB 36297 1968 8 be be VB 36297 1968 9 true true JJ 36297 1968 10 but but CC 36297 1968 11 it -PRON- PRP 36297 1968 12 serves serve VBZ 36297 1968 13 as as RB 36297 1968 14 well well RB 36297 1968 15 as as IN 36297 1968 16 any any DT 36297 1968 17 to to TO 36297 1968 18 emphasize emphasize VB 36297 1968 19 the the DT 36297 1968 20 illusion illusion NN 36297 1968 21 which which WDT 36297 1968 22 arises arise VBZ 36297 1968 23 when when WRB 36297 1968 24 the the DT 36297 1968 25 familiar familiar JJ 36297 1968 26 haze haze NN 36297 1968 27 is be VBZ 36297 1968 28 not not RB 36297 1968 29 present present JJ 36297 1968 30 in in IN 36297 1968 31 strange strange JJ 36297 1968 32 territory territory NN 36297 1968 33 . . . 36297 1969 1 It -PRON- PRP 36297 1969 2 is be VBZ 36297 1969 3 a a DT 36297 1969 4 common common JJ 36297 1969 5 experience experience NN 36297 1969 6 that that IN 36297 1969 7 things thing NNS 36297 1969 8 " " `` 36297 1969 9 loom loom VBP 36297 1969 10 in in IN 36297 1969 11 a a DT 36297 1969 12 fog fog NN 36297 1969 13 , , , 36297 1969 14 " " '' 36297 1969 15 that that RB 36297 1969 16 is is RB 36297 1969 17 , , , 36297 1969 18 that that IN 36297 1969 19 they -PRON- PRP 36297 1969 20 appear appear VBP 36297 1969 21 larger large JJR 36297 1969 22 than than IN 36297 1969 23 they -PRON- PRP 36297 1969 24 really really RB 36297 1969 25 are be VBP 36297 1969 26 . . . 36297 1970 1 An an DT 36297 1970 2 explanation explanation NN 36297 1970 3 which which WDT 36297 1970 4 has have VBZ 36297 1970 5 been be VBN 36297 1970 6 offered offer VBN 36297 1970 7 is be VBZ 36297 1970 8 that that DT 36297 1970 9 of of IN 36297 1970 10 an an DT 36297 1970 11 " " `` 36297 1970 12 excess excess NN 36297 1970 13 of of IN 36297 1970 14 aerial aerial JJ 36297 1970 15 perspective perspective NN 36297 1970 16 " " '' 36297 1970 17 which which WDT 36297 1970 18 causes cause VBZ 36297 1970 19 us -PRON- PRP 36297 1970 20 to to TO 36297 1970 21 overestimate overestimate VB 36297 1970 22 distance distance NN 36297 1970 23 and and CC 36297 1970 24 therefore therefore RB 36297 1970 25 to to TO 36297 1970 26 overestimate overestimate VB 36297 1970 27 size size NN 36297 1970 28 . . . 36297 1971 1 If if IN 36297 1971 2 this this DT 36297 1971 3 explanation explanation NN 36297 1971 4 is be VBZ 36297 1971 5 correct correct JJ 36297 1971 6 , , , 36297 1971 7 it -PRON- PRP 36297 1971 8 is be VBZ 36297 1971 9 quite quite RB 36297 1971 10 in in IN 36297 1971 11 the the DT 36297 1971 12 same same JJ 36297 1971 13 manner manner NN 36297 1971 14 that that WDT 36297 1971 15 in in IN 36297 1971 16 clear clear JJ 36297 1971 17 atmosphere atmosphere NN 36297 1971 18 in in IN 36297 1971 19 the the DT 36297 1971 20 mountains mountain NNS 36297 1971 21 we -PRON- PRP 36297 1971 22 underestimate underestimate VBP 36297 1971 23 distance distance NN 36297 1971 24 and and CC 36297 1971 25 , , , 36297 1971 26 consequently consequently RB 36297 1971 27 , , , 36297 1971 28 size size NN 36297 1971 29 . . . 36297 1972 1 However however RB 36297 1972 2 , , , 36297 1972 3 another another DT 36297 1972 4 factor factor NN 36297 1972 5 may may MD 36297 1972 6 enter enter VB 36297 1972 7 in in IN 36297 1972 8 the the DT 36297 1972 9 latter latter JJ 36297 1972 10 case case NN 36297 1972 11 , , , 36297 1972 12 for for IN 36297 1972 13 the the DT 36297 1972 14 illusion illusion NN 36297 1972 15 is be VBZ 36297 1972 16 confined confine VBN 36297 1972 17 chiefly chiefly RB 36297 1972 18 to to IN 36297 1972 19 newcomers newcomer NNS 36297 1972 20 ; ; : 36297 1972 21 that that RB 36297 1972 22 is is RB 36297 1972 23 , , , 36297 1972 24 in in IN 36297 1972 25 time time NN 36297 1972 26 one one NN 36297 1972 27 learns learn VBZ 36297 1972 28 to to TO 36297 1972 29 judge judge VB 36297 1972 30 correctly correctly RB 36297 1972 31 . . . 36297 1973 1 On on IN 36297 1973 2 entering enter VBG 36297 1973 3 a a DT 36297 1973 4 region region NN 36297 1973 5 of of IN 36297 1973 6 real real JJ 36297 1973 7 mountains mountain NNS 36297 1973 8 the the DT 36297 1973 9 first first JJ 36297 1973 10 time time NN 36297 1973 11 , , , 36297 1973 12 the the DT 36297 1973 13 newcomer newcomer NN 36297 1973 14 's 's POS 36297 1973 15 previous previous JJ 36297 1973 16 experience experience NN 36297 1973 17 with with IN 36297 1973 18 these these DT 36297 1973 19 formations formation NNS 36297 1973 20 is be VBZ 36297 1973 21 confined confine VBN 36297 1973 22 to to IN 36297 1973 23 hills hill NNS 36297 1973 24 relatively relatively RB 36297 1973 25 much much RB 36297 1973 26 smaller small JJR 36297 1973 27 . . . 36297 1974 1 Even even RB 36297 1974 2 allowing allow VBG 36297 1974 3 considerably considerably RB 36297 1974 4 for for IN 36297 1974 5 a a DT 36297 1974 6 greater great JJR 36297 1974 7 size size NN 36297 1974 8 when when WRB 36297 1974 9 viewing view VBG 36297 1974 10 the the DT 36297 1974 11 majestic majestic JJ 36297 1974 12 peaks peak NNS 36297 1974 13 for for IN 36297 1974 14 the the DT 36297 1974 15 first first JJ 36297 1974 16 time time NN 36297 1974 17 , , , 36297 1974 18 he -PRON- PRP 36297 1974 19 can can MD 36297 1974 20 not not RB 36297 1974 21 be be VB 36297 1974 22 expected expect VBN 36297 1974 23 to to TO 36297 1974 24 think think VB 36297 1974 25 in in IN 36297 1974 26 terms term NNS 36297 1974 27 of of IN 36297 1974 28 peaks peak NNS 36297 1974 29 many many JJ 36297 1974 30 times time NNS 36297 1974 31 larger large JJR 36297 1974 32 than than IN 36297 1974 33 his -PRON- PRP$ 36297 1974 34 familiar familiar JJ 36297 1974 35 hills hill NNS 36297 1974 36 . . . 36297 1975 1 Thus thus RB 36297 1975 2 underestimating underestimate VBG 36297 1975 3 the the DT 36297 1975 4 size size NN 36297 1975 5 of of IN 36297 1975 6 the the DT 36297 1975 7 great great JJ 36297 1975 8 peaks peak NNS 36297 1975 9 , , , 36297 1975 10 he -PRON- PRP 36297 1975 11 underestimates underestimate VBZ 36297 1975 12 the the DT 36297 1975 13 distance distance NN 36297 1975 14 . . . 36297 1976 1 The the DT 36297 1976 2 rarity rarity NN 36297 1976 3 of of IN 36297 1976 4 the the DT 36297 1976 5 atmospheric atmospheric JJ 36297 1976 6 haze haze NN 36297 1976 7 aids aid VBZ 36297 1976 8 him -PRON- PRP 36297 1976 9 in in IN 36297 1976 10 making make VBG 36297 1976 11 this this DT 36297 1976 12 mistake mistake NN 36297 1976 13 . . . 36297 1977 1 This this DT 36297 1977 2 is be VBZ 36297 1977 3 not not RB 36297 1977 4 offered offer VBN 36297 1977 5 as as IN 36297 1977 6 a a DT 36297 1977 7 substitute substitute NN 36297 1977 8 for for IN 36297 1977 9 aerial aerial JJ 36297 1977 10 perspective perspective NN 36297 1977 11 as as IN 36297 1977 12 the the DT 36297 1977 13 primary primary JJ 36297 1977 14 cause cause NN 36297 1977 15 of of IN 36297 1977 16 the the DT 36297 1977 17 illusion illusion NN 36297 1977 18 but but CC 36297 1977 19 it -PRON- PRP 36297 1977 20 appears appear VBZ 36297 1977 21 to to IN 36297 1977 22 the the DT 36297 1977 23 author author NN 36297 1977 24 that that IN 36297 1977 25 it -PRON- PRP 36297 1977 26 is be VBZ 36297 1977 27 a a DT 36297 1977 28 cause cause NN 36297 1977 29 which which WDT 36297 1977 30 must must MD 36297 1977 31 be be VB 36297 1977 32 taken take VBN 36297 1977 33 into into IN 36297 1977 34 account account NN 36297 1977 35 . . . 36297 1978 1 The the DT 36297 1978 2 apparent apparent JJ 36297 1978 3 form form NN 36297 1978 4 of of IN 36297 1978 5 the the DT 36297 1978 6 sky sky NN 36297 1978 7 has have VBZ 36297 1978 8 attracted attract VBN 36297 1978 9 the the DT 36297 1978 10 attention attention NN 36297 1978 11 of of IN 36297 1978 12 many many JJ 36297 1978 13 scientific scientific JJ 36297 1978 14 investigators investigator NNS 36297 1978 15 for for IN 36297 1978 16 centuries century NNS 36297 1978 17 . . . 36297 1979 1 There there EX 36297 1979 2 are be VBP 36297 1979 3 many many JJ 36297 1979 4 conflicting conflicting JJ 36297 1979 5 opinions opinion NNS 36297 1979 6 as as IN 36297 1979 7 to to IN 36297 1979 8 the the DT 36297 1979 9 causes cause NNS 36297 1979 10 of of IN 36297 1979 11 this this DT 36297 1979 12 appearance appearance NN 36297 1979 13 of of IN 36297 1979 14 form form NN 36297 1979 15 , , , 36297 1979 16 but but CC 36297 1979 17 there there EX 36297 1979 18 is be VBZ 36297 1979 19 general general JJ 36297 1979 20 agreement agreement NN 36297 1979 21 that that WDT 36297 1979 22 the the DT 36297 1979 23 sky sky NN 36297 1979 24 appears appear VBZ 36297 1979 25 usually usually RB 36297 1979 26 as as IN 36297 1979 27 a a DT 36297 1979 28 flattened flattened JJ 36297 1979 29 vault vault NN 36297 1979 30 . . . 36297 1980 1 The the DT 36297 1980 2 sky sky NN 36297 1980 3 is be VBZ 36297 1980 4 bright bright JJ 36297 1980 5 , , , 36297 1980 6 due due IN 36297 1980 7 to to IN 36297 1980 8 scattering scattering NN 36297 1980 9 of of IN 36297 1980 10 light light NN 36297 1980 11 by by IN 36297 1980 12 actual actual JJ 36297 1980 13 particles particle NNS 36297 1980 14 of of IN 36297 1980 15 solid solid JJ 36297 1980 16 matter matter NN 36297 1980 17 and and CC 36297 1980 18 moisture moisture NN 36297 1980 19 and and CC 36297 1980 20 possibly possibly RB 36297 1980 21 by by IN 36297 1980 22 molecules molecule NNS 36297 1980 23 of of IN 36297 1980 24 gas gas NN 36297 1980 25 . . . 36297 1981 1 Lack lack NN 36297 1981 2 of of IN 36297 1981 3 optical optical JJ 36297 1981 4 homogeneity homogeneity NN 36297 1981 5 due due JJ 36297 1981 6 to to IN 36297 1981 7 varying vary VBG 36297 1981 8 refractive refractive JJ 36297 1981 9 index index NN 36297 1981 10 is be VBZ 36297 1981 11 likely likely JJ 36297 1981 12 to to TO 36297 1981 13 be be VB 36297 1981 14 partially partially RB 36297 1981 15 responsible responsible JJ 36297 1981 16 . . . 36297 1982 1 Usually usually RB 36297 1982 2 a a DT 36297 1982 3 prominent prominent JJ 36297 1982 4 layer layer NN 36297 1982 5 of of IN 36297 1982 6 haze haze NN 36297 1982 7 about about IN 36297 1982 8 a a DT 36297 1982 9 mile mile NN 36297 1982 10 in in IN 36297 1982 11 thickness thickness NN 36297 1982 12 ( ( -LRB- 36297 1982 13 although although IN 36297 1982 14 this this DT 36297 1982 15 varies vary VBZ 36297 1982 16 considerably considerably RB 36297 1982 17 ) ) -RRB- 36297 1982 18 lies lie VBZ 36297 1982 19 next next RB 36297 1982 20 to to IN 36297 1982 21 the the DT 36297 1982 22 earth earth NN 36297 1982 23 's 's POS 36297 1982 24 surface surface NN 36297 1982 25 . . . 36297 1983 1 The the DT 36297 1983 2 top top NN 36297 1983 3 of of IN 36297 1983 4 this this DT 36297 1983 5 haze haze NN 36297 1983 6 is be VBZ 36297 1983 7 fairly fairly RB 36297 1983 8 well well RB 36297 1983 9 defined define VBN 36297 1983 10 as as IN 36297 1983 11 aerial aerial JJ 36297 1983 12 travelers traveler NNS 36297 1983 13 know know VBP 36297 1983 14 , , , 36297 1983 15 but but CC 36297 1983 16 the the DT 36297 1983 17 sky sky NN 36297 1983 18 above above RB 36297 1983 19 is be VBZ 36297 1983 20 still still RB 36297 1983 21 far far RB 36297 1983 22 from from IN 36297 1983 23 black black JJ 36297 1983 24 , , , 36297 1983 25 indicating indicate VBG 36297 1983 26 scattered scatter VBN 36297 1983 27 light light NN 36297 1983 28 and and CC 36297 1983 29 illuminated illuminate VBN 36297 1983 30 particles particle NNS 36297 1983 31 still still RB 36297 1983 32 higher high JJR 36297 1983 33 . . . 36297 1984 1 As as IN 36297 1984 2 one one PRP 36297 1984 3 continues continue VBZ 36297 1984 4 to to TO 36297 1984 5 ascend ascend VB 36297 1984 6 , , , 36297 1984 7 thereby thereby RB 36297 1984 8 leaving leave VBG 36297 1984 9 more more JJR 36297 1984 10 and and CC 36297 1984 11 more more JJR 36297 1984 12 of of IN 36297 1984 13 the the DT 36297 1984 14 luminous luminous JJ 36297 1984 15 haze haze NN 36297 1984 16 behind behind RB 36297 1984 17 , , , 36297 1984 18 the the DT 36297 1984 19 sky sky NN 36297 1984 20 becomes become VBZ 36297 1984 21 darker dark JJR 36297 1984 22 and and CC 36297 1984 23 darker dark JJR 36297 1984 24 . . . 36297 1985 1 Often often RB 36297 1985 2 at at IN 36297 1985 3 altitudes altitude NNS 36297 1985 4 of of IN 36297 1985 5 four four CD 36297 1985 6 or or CC 36297 1985 7 five five CD 36297 1985 8 miles mile NNS 36297 1985 9 the the DT 36297 1985 10 sky sky NN 36297 1985 11 is be VBZ 36297 1985 12 very very RB 36297 1985 13 dark dark JJ 36297 1985 14 and and CC 36297 1985 15 the the DT 36297 1985 16 sun sun NN 36297 1985 17 is be VBZ 36297 1985 18 piercingly piercingly RB 36297 1985 19 bright bright JJ 36297 1985 20 . . . 36297 1986 1 Usually usually RB 36297 1986 2 there there EX 36297 1986 3 is be VBZ 36297 1986 4 little little JJ 36297 1986 5 or or CC 36297 1986 6 no no DT 36297 1986 7 bright bright JJ 36297 1986 8 haze haze NN 36297 1986 9 adjacent adjacent JJ 36297 1986 10 to to IN 36297 1986 11 the the DT 36297 1986 12 sun sun NN 36297 1986 13 at at IN 36297 1986 14 these these DT 36297 1986 15 high high JJ 36297 1986 16 altitudes altitude NNS 36297 1986 17 as as IN 36297 1986 18 is be VBZ 36297 1986 19 commonly commonly RB 36297 1986 20 seen see VBN 36297 1986 21 from from IN 36297 1986 22 the the DT 36297 1986 23 earth earth NN 36297 1986 24 's 's POS 36297 1986 25 surface surface NN 36297 1986 26 . . . 36297 1987 1 At at IN 36297 1987 2 these these DT 36297 1987 3 high high JJ 36297 1987 4 altitudes altitude NNS 36297 1987 5 the the DT 36297 1987 6 author author NN 36297 1987 7 is be VBZ 36297 1987 8 not not RB 36297 1987 9 conscious conscious JJ 36297 1987 10 of of IN 36297 1987 11 a a DT 36297 1987 12 flattened flattened JJ 36297 1987 13 vault vault NN 36297 1987 14 as as IN 36297 1987 15 at at IN 36297 1987 16 the the DT 36297 1987 17 earth earth NN 36297 1987 18 's 's POS 36297 1987 19 surface surface NN 36297 1987 20 but but CC 36297 1987 21 the the DT 36297 1987 22 illusion illusion NN 36297 1987 23 of of IN 36297 1987 24 a a DT 36297 1987 25 hemispherical hemispherical JJ 36297 1987 26 dome dome NN 36297 1987 27 still still RB 36297 1987 28 persists persist VBZ 36297 1987 29 . . . 36297 1988 1 There there EX 36297 1988 2 is be VBZ 36297 1988 3 some some DT 36297 1988 4 agreement agreement NN 36297 1988 5 that that WDT 36297 1988 6 the the DT 36297 1988 7 dome dome NN 36297 1988 8 of of IN 36297 1988 9 the the DT 36297 1988 10 sky sky NN 36297 1988 11 appears appear VBZ 36297 1988 12 less less RBR 36297 1988 13 depressed depressed JJ 36297 1988 14 at at IN 36297 1988 15 the the DT 36297 1988 16 zenith zenith NN 36297 1988 17 by by IN 36297 1988 18 night night NN 36297 1988 19 than than IN 36297 1988 20 by by IN 36297 1988 21 day day NN 36297 1988 22 . . . 36297 1989 1 This this DT 36297 1989 2 is be VBZ 36297 1989 3 in in IN 36297 1989 4 accord accord NN 36297 1989 5 with with IN 36297 1989 6 the the DT 36297 1989 7 author author NN 36297 1989 8 's 's POS 36297 1989 9 observation observation NN 36297 1989 10 at at IN 36297 1989 11 very very RB 36297 1989 12 high high JJ 36297 1989 13 altitudes altitude NNS 36297 1989 14 on on IN 36297 1989 15 occasions occasion NNS 36297 1989 16 when when WRB 36297 1989 17 the the DT 36297 1989 18 sky sky NN 36297 1989 19 was be VBD 36297 1989 20 much much RB 36297 1989 21 darker dark JJR 36297 1989 22 than than IN 36297 1989 23 when when WRB 36297 1989 24 viewed view VBN 36297 1989 25 from from IN 36297 1989 26 the the DT 36297 1989 27 earth earth NN 36297 1989 28 's 's POS 36297 1989 29 surface surface NN 36297 1989 30 . . . 36297 1990 1 Dember Dember NNP 36297 1990 2 and and CC 36297 1990 3 Uibe Uibe NNP 36297 1990 4 assumed assume VBD 36297 1990 5 the the DT 36297 1990 6 apparent apparent JJ 36297 1990 7 shape shape NN 36297 1990 8 as as IN 36297 1990 9 a a DT 36297 1990 10 part part NN 36297 1990 11 of of IN 36297 1990 12 a a DT 36297 1990 13 sphere sphere NN 36297 1990 14 ( ( -LRB- 36297 1990 15 justifying justify VBG 36297 1990 16 this this DT 36297 1990 17 assumption assumption NN 36297 1990 18 to to IN 36297 1990 19 their -PRON- PRP$ 36297 1990 20 satisfaction satisfaction NN 36297 1990 21 ) ) -RRB- 36297 1990 22 and and CC 36297 1990 23 obtained obtain VBN 36297 1990 24 estimates estimate NNS 36297 1990 25 of of IN 36297 1990 26 the the DT 36297 1990 27 apparent apparent JJ 36297 1990 28 depression depression NN 36297 1990 29 at at IN 36297 1990 30 the the DT 36297 1990 31 zenith zenith NN 36297 1990 32 . . . 36297 1991 1 They -PRON- PRP 36297 1991 2 estimated estimate VBD 36297 1991 3 the the DT 36297 1991 4 middle middle JJ 36297 1991 5 point point NN 36297 1991 6 of of IN 36297 1991 7 the the DT 36297 1991 8 arc arc NN 36297 1991 9 from from IN 36297 1991 10 the the DT 36297 1991 11 zenith zenith NN 36297 1991 12 to to IN 36297 1991 13 the the DT 36297 1991 14 horizon horizon NN 36297 1991 15 and and CC 36297 1991 16 then then RB 36297 1991 17 measured measure VBD 36297 1991 18 the the DT 36297 1991 19 angular angular JJ 36297 1991 20 altitude altitude NN 36297 1991 21 of of IN 36297 1991 22 that that DT 36297 1991 23 point point NN 36297 1991 24 . . . 36297 1992 1 They -PRON- PRP 36297 1992 2 found find VBD 36297 1992 3 that that IN 36297 1992 4 the the DT 36297 1992 5 degree degree NN 36297 1992 6 of of IN 36297 1992 7 clearness clearness NN 36297 1992 8 of of IN 36297 1992 9 the the DT 36297 1992 10 sky sky NN 36297 1992 11 has have VBZ 36297 1992 12 considerable considerable JJ 36297 1992 13 influence influence NN 36297 1992 14 upon upon IN 36297 1992 15 the the DT 36297 1992 16 apparent apparent JJ 36297 1992 17 height height NN 36297 1992 18 and and CC 36297 1992 19 they -PRON- PRP 36297 1992 20 state state VBP 36297 1992 21 that that IN 36297 1992 22 the the DT 36297 1992 23 sky sky NN 36297 1992 24 appears appear VBZ 36297 1992 25 higher high JJR 36297 1992 26 in in IN 36297 1992 27 the the DT 36297 1992 28 sub sub NN 36297 1992 29 - - NNS 36297 1992 30 tropics tropic NNS 36297 1992 31 than than IN 36297 1992 32 in in IN 36297 1992 33 Germany Germany NNP 36297 1992 34 . . . 36297 1993 1 On on IN 36297 1993 2 very very RB 36297 1993 3 clear clear JJ 36297 1993 4 moonless moonless NN 36297 1993 5 nights night NNS 36297 1993 6 they -PRON- PRP 36297 1993 7 found find VBD 36297 1993 8 that that IN 36297 1993 9 the the DT 36297 1993 10 shape shape NN 36297 1993 11 of of IN 36297 1993 12 the the DT 36297 1993 13 sky sky NN 36297 1993 14 - - HYPH 36297 1993 15 dome dome NN 36297 1993 16 differs differ NNS 36297 1993 17 little little JJ 36297 1993 18 from from IN 36297 1993 19 that that DT 36297 1993 20 of of IN 36297 1993 21 a a DT 36297 1993 22 hemisphere hemisphere NN 36297 1993 23 . . . 36297 1994 1 They -PRON- PRP 36297 1994 2 concluded conclude VBD 36297 1994 3 that that IN 36297 1994 4 the the DT 36297 1994 5 phenomenon phenomenon NN 36297 1994 6 is be VBZ 36297 1994 7 apparently apparently RB 36297 1994 8 due due JJ 36297 1994 9 to to IN 36297 1994 10 optical optical JJ 36297 1994 11 conditions condition NNS 36297 1994 12 of of IN 36297 1994 13 the the DT 36297 1994 14 atmosphere atmosphere NN 36297 1994 15 which which WDT 36297 1994 16 have have VBP 36297 1994 17 not not RB 36297 1994 18 been be VBN 36297 1994 19 determined determine VBN 36297 1994 20 . . . 36297 1995 1 It -PRON- PRP 36297 1995 2 is be VBZ 36297 1995 3 of of IN 36297 1995 4 interest interest NN 36297 1995 5 to to TO 36297 1995 6 note note VB 36297 1995 7 the the DT 36297 1995 8 appearance appearance NN 36297 1995 9 of of IN 36297 1995 10 the the DT 36297 1995 11 sky sky NN 36297 1995 12 when when WRB 36297 1995 13 cumulus cumulus NNP 36297 1995 14 clouds cloud NNS 36297 1995 15 are be VBP 36297 1995 16 present present JJ 36297 1995 17 . . . 36297 1996 1 The the DT 36297 1996 2 bases basis NNS 36297 1996 3 of of IN 36297 1996 4 these these DT 36297 1996 5 vary vary VBP 36297 1996 6 in in IN 36297 1996 7 height height NN 36297 1996 8 , , , 36297 1996 9 but but CC 36297 1996 10 are be VBP 36297 1996 11 found find VBN 36297 1996 12 at at IN 36297 1996 13 altitudes altitude NNS 36297 1996 14 from from IN 36297 1996 15 three three CD 36297 1996 16 to to TO 36297 1996 17 five five CD 36297 1996 18 thousand thousand CD 36297 1996 19 feet foot NNS 36297 1996 20 . . . 36297 1997 1 They -PRON- PRP 36297 1997 2 appear appear VBP 36297 1997 3 to to TO 36297 1997 4 form form VB 36297 1997 5 a a DT 36297 1997 6 flat flat JJ 36297 1997 7 roof roof NN 36297 1997 8 of of IN 36297 1997 9 clouds cloud NNS 36297 1997 10 bending bend VBG 36297 1997 11 downward downward RB 36297 1997 12 at at IN 36297 1997 13 the the DT 36297 1997 14 horizon horizon NN 36297 1997 15 , , , 36297 1997 16 thus thus RB 36297 1997 17 giving give VBG 36297 1997 18 the the DT 36297 1997 19 appearance appearance NN 36297 1997 20 of of IN 36297 1997 21 a a DT 36297 1997 22 vaulted vaulted JJ 36297 1997 23 but but CC 36297 1997 24 flattened flatten VBD 36297 1997 25 dome dome NN 36297 1997 26 . . . 36297 1998 1 This this DT 36297 1998 2 apparent apparent JJ 36297 1998 3 shape shape NN 36297 1998 4 does do VBZ 36297 1998 5 not not RB 36297 1998 6 differ differ VB 36297 1998 7 much much JJ 36297 1998 8 in in IN 36297 1998 9 clear clear JJ 36297 1998 10 weather weather NN 36297 1998 11 , , , 36297 1998 12 perhaps perhaps RB 36297 1998 13 due due JJ 36297 1998 14 largely largely RB 36297 1998 15 to to IN 36297 1998 16 the the DT 36297 1998 17 accustomedness accustomedness NN 36297 1998 18 of of IN 36297 1998 19 the the DT 36297 1998 20 eye eye NN 36297 1998 21 and and CC 36297 1998 22 to to IN 36297 1998 23 the the DT 36297 1998 24 degradation degradation NN 36297 1998 25 of of IN 36297 1998 26 color color NN 36297 1998 27 from from IN 36297 1998 28 blue blue JJ 36297 1998 29 to to TO 36297 1998 30 gray gray VB 36297 1998 31 toward toward IN 36297 1998 32 the the DT 36297 1998 33 horizon horizon NN 36297 1998 34 . . . 36297 1999 1 Furthermore furthermore RB 36297 1999 2 the the DT 36297 1999 3 lower low JJR 36297 1999 4 sky sky NN 36297 1999 5 is be VBZ 36297 1999 6 usually usually RB 36297 1999 7 much much RB 36297 1999 8 brighter bright JJR 36297 1999 9 than than IN 36297 1999 10 the the DT 36297 1999 11 zenith zenith NN 36297 1999 12 and and CC 36297 1999 13 the the DT 36297 1999 14 latter latter JJ 36297 1999 15 being being NN 36297 1999 16 darker dark JJR 36297 1999 17 appears appear VBZ 36297 1999 18 to to TO 36297 1999 19 hang hang VB 36297 1999 20 lower low JJR 36297 1999 21 . . . 36297 2000 1 It -PRON- PRP 36297 2000 2 is be VBZ 36297 2000 3 of of IN 36297 2000 4 interest interest NN 36297 2000 5 to to TO 36297 2000 6 note note VB 36297 2000 7 how how WRB 36297 2000 8 persistent persistent JJ 36297 2000 9 is be VBZ 36297 2000 10 the the DT 36297 2000 11 illusion illusion NN 36297 2000 12 of of IN 36297 2000 13 a a DT 36297 2000 14 flattened flattened JJ 36297 2000 15 dome dome NN 36297 2000 16 , , , 36297 2000 17 for for IN 36297 2000 18 when when WRB 36297 2000 19 one one PRP 36297 2000 20 rises rise VBZ 36297 2000 21 rapidly rapidly RB 36297 2000 22 in in IN 36297 2000 23 the the DT 36297 2000 24 air air NN 36297 2000 25 and and CC 36297 2000 26 , , , 36297 2000 27 within within IN 36297 2000 28 a a DT 36297 2000 29 few few JJ 36297 2000 30 minutes minute NNS 36297 2000 31 , , , 36297 2000 32 is be VBZ 36297 2000 33 on on IN 36297 2000 34 the the DT 36297 2000 35 level level NN 36297 2000 36 with with IN 36297 2000 37 the the DT 36297 2000 38 clouds cloud NNS 36297 2000 39 or or CC 36297 2000 40 the the DT 36297 2000 41 dense dense JJ 36297 2000 42 low low RB 36297 2000 43 - - HYPH 36297 2000 44 lying lie VBG 36297 2000 45 haze haze NN 36297 2000 46 , , , 36297 2000 47 he -PRON- PRP 36297 2000 48 is be VBZ 36297 2000 49 mildly mildly RB 36297 2000 50 surprised surprised JJ 36297 2000 51 to to TO 36297 2000 52 find find VB 36297 2000 53 these these DT 36297 2000 54 are be VBP 36297 2000 55 levels level NNS 36297 2000 56 and and CC 36297 2000 57 not not RB 36297 2000 58 vaulted vault VBN 36297 2000 59 roofs roof NNS 36297 2000 60 . . . 36297 2001 1 Despite despite IN 36297 2001 2 the the DT 36297 2001 3 fact fact NN 36297 2001 4 that that IN 36297 2001 5 by by IN 36297 2001 6 many many JJ 36297 2001 7 previous previous JJ 36297 2001 8 experiences experience NNS 36297 2001 9 he -PRON- PRP 36297 2001 10 has have VBZ 36297 2001 11 learned learn VBN 36297 2001 12 what what WP 36297 2001 13 to to TO 36297 2001 14 expect expect VB 36297 2001 15 , , , 36297 2001 16 the the DT 36297 2001 17 feeling feeling NN 36297 2001 18 of of IN 36297 2001 19 mild mild JJ 36297 2001 20 surprise surprise NN 36297 2001 21 is be VBZ 36297 2001 22 born bear VBN 36297 2001 23 each each DT 36297 2001 24 time time NN 36297 2001 25 on on IN 36297 2001 26 ascending ascend VBG 36297 2001 27 rapidly rapidly RB 36297 2001 28 . . . 36297 2002 1 The the DT 36297 2002 2 appearance appearance NN 36297 2002 3 of of IN 36297 2002 4 the the DT 36297 2002 5 flattened flattened JJ 36297 2002 6 vault vault NN 36297 2002 7 of of IN 36297 2002 8 the the DT 36297 2002 9 sky sky NN 36297 2002 10 is be VBZ 36297 2002 11 held hold VBN 36297 2002 12 by by IN 36297 2002 13 some some DT 36297 2002 14 to to TO 36297 2002 15 account account VB 36297 2002 16 for for IN 36297 2002 17 the the DT 36297 2002 18 apparent apparent JJ 36297 2002 19 enlargement enlargement NN 36297 2002 20 of of IN 36297 2002 21 the the DT 36297 2002 22 sun sun NN 36297 2002 23 , , , 36297 2002 24 moon moon NN 36297 2002 25 , , , 36297 2002 26 and and CC 36297 2002 27 the the DT 36297 2002 28 constellations constellation NNS 36297 2002 29 at at IN 36297 2002 30 the the DT 36297 2002 31 horizon horizon NN 36297 2002 32 . . . 36297 2003 1 That that RB 36297 2003 2 is is RB 36297 2003 3 , , , 36297 2003 4 they -PRON- PRP 36297 2003 5 appear appear VBP 36297 2003 6 more more RBR 36297 2003 7 distant distant JJ 36297 2003 8 at at IN 36297 2003 9 the the DT 36297 2003 10 horizon horizon NN 36297 2003 11 and and CC 36297 2003 12 we -PRON- PRP 36297 2003 13 instinctively instinctively RB 36297 2003 14 appraise appraise VBP 36297 2003 15 them -PRON- PRP 36297 2003 16 as as IN 36297 2003 17 being be VBG 36297 2003 18 larger large JJR 36297 2003 19 than than IN 36297 2003 20 when when WRB 36297 2003 21 they -PRON- PRP 36297 2003 22 are be VBP 36297 2003 23 at at IN 36297 2003 24 higher high JJR 36297 2003 25 altitudes altitude NNS 36297 2003 26 . . . 36297 2004 1 It -PRON- PRP 36297 2004 2 is be VBZ 36297 2004 3 certain certain JJ 36297 2004 4 that that IN 36297 2004 5 these these DT 36297 2004 6 heavenly heavenly JJ 36297 2004 7 bodies body NNS 36297 2004 8 do do VBP 36297 2004 9 appear appear VB 36297 2004 10 much much RB 36297 2004 11 larger large JJR 36297 2004 12 when when WRB 36297 2004 13 they -PRON- PRP 36297 2004 14 are be VBP 36297 2004 15 rising rise VBG 36297 2004 16 or or CC 36297 2004 17 setting set VBG 36297 2004 18 than than IN 36297 2004 19 when when WRB 36297 2004 20 they -PRON- PRP 36297 2004 21 are be VBP 36297 2004 22 nearer nearer IN 36297 2004 23 the the DT 36297 2004 24 zenith zenith NN 36297 2004 25 . . . 36297 2005 1 In in IN 36297 2005 2 fact fact NN 36297 2005 3 , , , 36297 2005 4 this this DT 36297 2005 5 is be VBZ 36297 2005 6 one one CD 36297 2005 7 of of IN 36297 2005 8 the the DT 36297 2005 9 most most RBS 36297 2005 10 remarkable remarkable JJ 36297 2005 11 and and CC 36297 2005 12 surprising surprising JJ 36297 2005 13 illusions illusion NNS 36297 2005 14 which which WDT 36297 2005 15 exist exist VBP 36297 2005 16 . . . 36297 2006 1 Furthermore furthermore RB 36297 2006 2 this this DT 36297 2006 3 apparent apparent JJ 36297 2006 4 enlargement enlargement NN 36297 2006 5 has have VBZ 36297 2006 6 been be VBN 36297 2006 7 noted note VBN 36297 2006 8 universally universally RB 36297 2006 9 , , , 36297 2006 10 still still RB 36297 2006 11 many many JJ 36297 2006 12 persons person NNS 36297 2006 13 have have VBP 36297 2006 14 attributed attribute VBN 36297 2006 15 it -PRON- PRP 36297 2006 16 to to IN 36297 2006 17 an an DT 36297 2006 18 actual actual JJ 36297 2006 19 optical optical JJ 36297 2006 20 magnification magnification NN 36297 2006 21 . . . 36297 2007 1 Although although IN 36297 2007 2 we -PRON- PRP 36297 2007 3 are be VBP 36297 2007 4 more more RBR 36297 2007 5 familiar familiar JJ 36297 2007 6 with with IN 36297 2007 7 this this DT 36297 2007 8 enlargement enlargement NN 36297 2007 9 in in IN 36297 2007 10 connection connection NN 36297 2007 11 with with IN 36297 2007 12 the the DT 36297 2007 13 sun sun NN 36297 2007 14 and and CC 36297 2007 15 moon moon NN 36297 2007 16 , , , 36297 2007 17 it -PRON- PRP 36297 2007 18 still still RB 36297 2007 19 persists persist VBZ 36297 2007 20 with with IN 36297 2007 21 the the DT 36297 2007 22 constellations constellation NNS 36297 2007 23 . . . 36297 2008 1 For for IN 36297 2008 2 example example NN 36297 2008 3 , , , 36297 2008 4 Orion orion NN 36297 2008 5 is be VBZ 36297 2008 6 apparently apparently RB 36297 2008 7 very very RB 36297 2008 8 large large JJ 36297 2008 9 ; ; : 36297 2008 10 in in IN 36297 2008 11 fact fact NN 36297 2008 12 , , , 36297 2008 13 this this DT 36297 2008 14 is be VBZ 36297 2008 15 the the DT 36297 2008 16 origin origin NN 36297 2008 17 of of IN 36297 2008 18 the the DT 36297 2008 19 name name NN 36297 2008 20 . . . 36297 2009 1 That that IN 36297 2009 2 this this DT 36297 2009 3 enlargement enlargement NN 36297 2009 4 is be VBZ 36297 2009 5 an an DT 36297 2009 6 illusion illusion NN 36297 2009 7 can can MD 36297 2009 8 be be VB 36297 2009 9 shown show VBN 36297 2009 10 in in IN 36297 2009 11 several several JJ 36297 2009 12 ways way NNS 36297 2009 13 but but CC 36297 2009 14 that that IN 36297 2009 15 it -PRON- PRP 36297 2009 16 is be VBZ 36297 2009 17 solely solely RB 36297 2009 18 due due JJ 36297 2009 19 to to IN 36297 2009 20 the the DT 36297 2009 21 influence influence NN 36297 2009 22 of of IN 36297 2009 23 the the DT 36297 2009 24 apparent apparent JJ 36297 2009 25 flattened flatten VBN 36297 2009 26 form form NN 36297 2009 27 of of IN 36297 2009 28 the the DT 36297 2009 29 sky sky NN 36297 2009 30 may may MD 36297 2009 31 be be VB 36297 2009 32 doubted doubt VBN 36297 2009 33 . . . 36297 2010 1 Certainly certainly RB 36297 2010 2 the the DT 36297 2010 3 moon moon NN 36297 2010 4 appears appear VBZ 36297 2010 5 greatly greatly RB 36297 2010 6 enlarged enlarge VBN 36297 2010 7 while while IN 36297 2010 8 near near IN 36297 2010 9 the the DT 36297 2010 10 horizon horizon NN 36297 2010 11 , , , 36297 2010 12 even even RB 36297 2010 13 when when WRB 36297 2010 14 there there EX 36297 2010 15 is be VBZ 36297 2010 16 doubt doubt NN 36297 2010 17 as as IN 36297 2010 18 to to IN 36297 2010 19 an an DT 36297 2010 20 appreciable appreciable JJ 36297 2010 21 appearance appearance NN 36297 2010 22 of of IN 36297 2010 23 flattening flattening NN 36297 2010 24 of of IN 36297 2010 25 the the DT 36297 2010 26 sky sky NN 36297 2010 27 - - HYPH 36297 2010 28 dome dome NN 36297 2010 29 . . . 36297 2011 1 Many many JJ 36297 2011 2 peculiar peculiar JJ 36297 2011 3 conditions condition NNS 36297 2011 4 and and CC 36297 2011 5 prejudices prejudice NNS 36297 2011 6 must must MD 36297 2011 7 be be VB 36297 2011 8 taken take VBN 36297 2011 9 into into IN 36297 2011 10 account account NN 36297 2011 11 . . . 36297 2012 1 For for IN 36297 2012 2 example example NN 36297 2012 3 , , , 36297 2012 4 if if IN 36297 2012 5 various various JJ 36297 2012 6 persons person NNS 36297 2012 7 are be VBP 36297 2012 8 asked ask VBN 36297 2012 9 to to TO 36297 2012 10 give give VB 36297 2012 11 an an DT 36297 2012 12 idea idea NN 36297 2012 13 of of IN 36297 2012 14 how how WRB 36297 2012 15 large large JJ 36297 2012 16 is be VBZ 36297 2012 17 the the DT 36297 2012 18 disk disk NN 36297 2012 19 of of IN 36297 2012 20 the the DT 36297 2012 21 sun sun NN 36297 2012 22 or or CC 36297 2012 23 moon moon NN 36297 2012 24 , , , 36297 2012 25 their -PRON- PRP$ 36297 2012 26 answers answer NNS 36297 2012 27 would would MD 36297 2012 28 vary vary VB 36297 2012 29 usually usually RB 36297 2012 30 with with IN 36297 2012 31 the the DT 36297 2012 32 head head NN 36297 2012 33 of of IN 36297 2012 34 a a DT 36297 2012 35 barrel barrel NN 36297 2012 36 as as IN 36297 2012 37 the the DT 36297 2012 38 maximum maximum NN 36297 2012 39 . . . 36297 2013 1 However however RB 36297 2013 2 , , , 36297 2013 3 the the DT 36297 2013 4 size size NN 36297 2013 5 of of IN 36297 2013 6 a a DT 36297 2013 7 tree tree NN 36297 2013 8 at at IN 36297 2013 9 a a DT 36297 2013 10 distant distant JJ 36297 2013 11 sky sky NN 36297 2013 12 - - HYPH 36297 2013 13 line line NN 36297 2013 14 might may MD 36297 2013 15 unhesitatingly unhesitatingly RB 36297 2013 16 be be VB 36297 2013 17 given give VBN 36297 2013 18 as as IN 36297 2013 19 thirty thirty CD 36297 2013 20 feet foot NNS 36297 2013 21 . . . 36297 2014 1 At at IN 36297 2014 2 the the DT 36297 2014 3 horizon horizon NN 36297 2014 4 we -PRON- PRP 36297 2014 5 instinctively instinctively RB 36297 2014 6 compare compare VBP 36297 2014 7 the the DT 36297 2014 8 size size NN 36297 2014 9 of of IN 36297 2014 10 the the DT 36297 2014 11 sun sun NN 36297 2014 12 , , , 36297 2014 13 moon moon NN 36297 2014 14 , , , 36297 2014 15 and and CC 36297 2014 16 constellations constellation NNS 36297 2014 17 with with IN 36297 2014 18 hills hill NNS 36297 2014 19 , , , 36297 2014 20 trees tree NNS 36297 2014 21 , , , 36297 2014 22 houses house NNS 36297 2014 23 , , , 36297 2014 24 and and CC 36297 2014 25 other other JJ 36297 2014 26 objects object NNS 36297 2014 27 , , , 36297 2014 28 but but CC 36297 2014 29 when when WRB 36297 2014 30 the the DT 36297 2014 31 former former JJ 36297 2014 32 are be VBP 36297 2014 33 high high JJ 36297 2014 34 toward toward IN 36297 2014 35 the the DT 36297 2014 36 zenith zenith NN 36297 2014 37 in in IN 36297 2014 38 the the DT 36297 2014 39 empty empty JJ 36297 2014 40 sky sky NN 36297 2014 41 we -PRON- PRP 36297 2014 42 may may MD 36297 2014 43 judge judge VB 36297 2014 44 them -PRON- PRP 36297 2014 45 in in IN 36297 2014 46 their -PRON- PRP$ 36297 2014 47 isolated isolated JJ 36297 2014 48 position position NN 36297 2014 49 to to TO 36297 2014 50 be be VB 36297 2014 51 nearer near JJR 36297 2014 52 , , , 36297 2014 53 hence hence RB 36297 2014 54 smaller small JJR 36297 2014 55 . . . 36297 2015 1 Normally normally RB 36297 2015 2 the the DT 36297 2015 3 retinal retinal JJ 36297 2015 4 image image NN 36297 2015 5 grows grow VBZ 36297 2015 6 larger large JJR 36297 2015 7 as as IN 36297 2015 8 the the DT 36297 2015 9 object object NN 36297 2015 10 approaches approach VBZ 36297 2015 11 , , , 36297 2015 12 but but CC 36297 2015 13 this this DT 36297 2015 14 same same JJ 36297 2015 15 sensation sensation NN 36297 2015 16 also also RB 36297 2015 17 arises arise VBZ 36297 2015 18 when when WRB 36297 2015 19 an an DT 36297 2015 20 object object NN 36297 2015 21 grows grow VBZ 36297 2015 22 in in IN 36297 2015 23 size size NN 36297 2015 24 without without IN 36297 2015 25 altering alter VBG 36297 2015 26 its -PRON- PRP$ 36297 2015 27 distance distance NN 36297 2015 28 . . . 36297 2016 1 If if IN 36297 2016 2 the the DT 36297 2016 3 moon moon NN 36297 2016 4 be be VB 36297 2016 5 viewed view VBN 36297 2016 6 through through IN 36297 2016 7 field field NN 36297 2016 8 - - HYPH 36297 2016 9 glasses glass NNS 36297 2016 10 the the DT 36297 2016 11 image image NN 36297 2016 12 is be VBZ 36297 2016 13 larger large JJR 36297 2016 14 than than IN 36297 2016 15 in in IN 36297 2016 16 the the DT 36297 2016 17 case case NN 36297 2016 18 of of IN 36297 2016 19 the the DT 36297 2016 20 unaided unaided JJ 36297 2016 21 eyes eye NNS 36297 2016 22 , , , 36297 2016 23 but but CC 36297 2016 24 it -PRON- PRP 36297 2016 25 is be VBZ 36297 2016 26 quite quite RB 36297 2016 27 common common JJ 36297 2016 28 for for IN 36297 2016 29 observers observer NNS 36297 2016 30 to to TO 36297 2016 31 state state VB 36297 2016 32 that that IN 36297 2016 33 it -PRON- PRP 36297 2016 34 appears appear VBZ 36297 2016 35 smaller small JJR 36297 2016 36 . . . 36297 2017 1 The the DT 36297 2017 2 enlargement enlargement NN 36297 2017 3 may may MD 36297 2017 4 be be VB 36297 2017 5 interpreted interpret VBN 36297 2017 6 as as IN 36297 2017 7 approach approach NN 36297 2017 8 and and CC 36297 2017 9 inasmuch inasmuch NN 36297 2017 10 as as IN 36297 2017 11 we -PRON- PRP 36297 2017 12 , , , 36297 2017 13 through through IN 36297 2017 14 habit habit NN 36297 2017 15 , , , 36297 2017 16 allow allow VB 36297 2017 17 for for IN 36297 2017 18 enlargement enlargement NN 36297 2017 19 as as IN 36297 2017 20 an an DT 36297 2017 21 object object NN 36297 2017 22 approaches approach VBZ 36297 2017 23 , , , 36297 2017 24 we -PRON- PRP 36297 2017 25 also also RB 36297 2017 26 must must MD 36297 2017 27 reduce reduce VB 36297 2017 28 it -PRON- PRP 36297 2017 29 in in IN 36297 2017 30 our -PRON- PRP$ 36297 2017 31 imagination imagination NN 36297 2017 32 to to IN 36297 2017 33 its -PRON- PRP$ 36297 2017 34 natural natural JJ 36297 2017 35 size size NN 36297 2017 36 . . . 36297 2018 1 Perhaps perhaps RB 36297 2018 2 in in IN 36297 2018 3 this this DT 36297 2018 4 case case NN 36297 2018 5 we -PRON- PRP 36297 2018 6 overdo overdo VBP 36297 2018 7 this this DT 36297 2018 8 reduction reduction NN 36297 2018 9 . . . 36297 2019 1 James James NNP 36297 2019 2 states state VBZ 36297 2019 3 that that IN 36297 2019 4 the the DT 36297 2019 5 increased increase VBN 36297 2019 6 apparent apparent JJ 36297 2019 7 size size NN 36297 2019 8 of of IN 36297 2019 9 the the DT 36297 2019 10 moon moon NN 36297 2019 11 near near IN 36297 2019 12 the the DT 36297 2019 13 horizon horizon NN 36297 2019 14 " " `` 36297 2019 15 is be VBZ 36297 2019 16 a a DT 36297 2019 17 result result NN 36297 2019 18 of of IN 36297 2019 19 association association NN 36297 2019 20 and and CC 36297 2019 21 probability probability NN 36297 2019 22 . . . 36297 2020 1 It -PRON- PRP 36297 2020 2 is be VBZ 36297 2020 3 seen see VBN 36297 2020 4 through through IN 36297 2020 5 vaporous vaporous JJ 36297 2020 6 air air NN 36297 2020 7 and and CC 36297 2020 8 looks look VBZ 36297 2020 9 dimmer dimmer NN 36297 2020 10 and and CC 36297 2020 11 duskier dusky JJR 36297 2020 12 than than IN 36297 2020 13 when when WRB 36297 2020 14 it -PRON- PRP 36297 2020 15 rides ride VBZ 36297 2020 16 on on IN 36297 2020 17 high high JJ 36297 2020 18 ; ; : 36297 2020 19 and and CC 36297 2020 20 it -PRON- PRP 36297 2020 21 is be VBZ 36297 2020 22 seen see VBN 36297 2020 23 over over IN 36297 2020 24 fields field NNS 36297 2020 25 , , , 36297 2020 26 trees tree NNS 36297 2020 27 , , , 36297 2020 28 hedges hedge NNS 36297 2020 29 , , , 36297 2020 30 streams stream NNS 36297 2020 31 , , , 36297 2020 32 and and CC 36297 2020 33 the the DT 36297 2020 34 like like JJ 36297 2020 35 , , , 36297 2020 36 which which WDT 36297 2020 37 break break VBP 36297 2020 38 up up RP 36297 2020 39 the the DT 36297 2020 40 intervening intervene VBG 36297 2020 41 space space NN 36297 2020 42 and and CC 36297 2020 43 makes make VBZ 36297 2020 44 us -PRON- PRP 36297 2020 45 the the DT 36297 2020 46 better well RBR 36297 2020 47 realize realize VB 36297 2020 48 the the DT 36297 2020 49 latter latter NN 36297 2020 50 's 's POS 36297 2020 51 extent extent NN 36297 2020 52 . . . 36297 2020 53 " " '' 36297 2021 1 Both both DT 36297 2021 2 these these DT 36297 2021 3 causes cause NNS 36297 2021 4 may may MD 36297 2021 5 make make VB 36297 2021 6 the the DT 36297 2021 7 moon moon NN 36297 2021 8 seem seem VB 36297 2021 9 more more RBR 36297 2021 10 distant distant JJ 36297 2021 11 when when WRB 36297 2021 12 it -PRON- PRP 36297 2021 13 is be VBZ 36297 2021 14 at at IN 36297 2021 15 low low JJ 36297 2021 16 altitudes altitude NNS 36297 2021 17 and and CC 36297 2021 18 as as IN 36297 2021 19 its -PRON- PRP$ 36297 2021 20 visual visual JJ 36297 2021 21 angle angle NN 36297 2021 22 grows grow VBZ 36297 2021 23 less less RBR 36297 2021 24 , , , 36297 2021 25 we -PRON- PRP 36297 2021 26 may may MD 36297 2021 27 think think VB 36297 2021 28 that that IN 36297 2021 29 it -PRON- PRP 36297 2021 30 must must MD 36297 2021 31 be be VB 36297 2021 32 a a DT 36297 2021 33 larger large JJR 36297 2021 34 body body NN 36297 2021 35 and and CC 36297 2021 36 we -PRON- PRP 36297 2021 37 so so RB 36297 2021 38 perceive perceive VBP 36297 2021 39 it -PRON- PRP 36297 2021 40 . . . 36297 2022 1 Certainly certainly RB 36297 2022 2 it -PRON- PRP 36297 2022 3 looks look VBZ 36297 2022 4 particularly particularly RB 36297 2022 5 large large JJ 36297 2022 6 when when WRB 36297 2022 7 a a DT 36297 2022 8 well well RB 36297 2022 9 - - HYPH 36297 2022 10 known know VBN 36297 2022 11 object object NN 36297 2022 12 is be VBZ 36297 2022 13 silhouetted silhouette VBN 36297 2022 14 against against IN 36297 2022 15 its -PRON- PRP$ 36297 2022 16 disk disk NN 36297 2022 17 . . . 36297 2023 1 Before before IN 36297 2023 2 proceeding proceed VBG 36297 2023 3 further far RBR 36297 2023 4 with with IN 36297 2023 5 explanations explanation NNS 36297 2023 6 , , , 36297 2023 7 it -PRON- PRP 36297 2023 8 may may MD 36297 2023 9 be be VB 36297 2023 10 of of IN 36297 2023 11 interest interest NN 36297 2023 12 to to TO 36297 2023 13 turn turn VB 36297 2023 14 to to IN 36297 2023 15 Fig Fig NNP 36297 2023 16 . . . 36297 2024 1 78 78 CD 36297 2024 2 which which WDT 36297 2024 3 is be VBZ 36297 2024 4 an an DT 36297 2024 5 accurate accurate JJ 36297 2024 6 tracing tracing NN 36297 2024 7 of of IN 36297 2024 8 the the DT 36297 2024 9 path path NN 36297 2024 10 of of IN 36297 2024 11 the the DT 36297 2024 12 moon moon NN 36297 2024 13 's 's POS 36297 2024 14 image image NN 36297 2024 15 across across IN 36297 2024 16 a a DT 36297 2024 17 photographic photographic JJ 36297 2024 18 plate plate NN 36297 2024 19 . . . 36297 2025 1 The the DT 36297 2025 2 camera camera NN 36297 2025 3 was be VBD 36297 2025 4 placed place VBN 36297 2025 5 in in IN 36297 2025 6 a a DT 36297 2025 7 fixed fix VBN 36297 2025 8 position position NN 36297 2025 9 and and CC 36297 2025 10 the the DT 36297 2025 11 image image NN 36297 2025 12 of of IN 36297 2025 13 the the DT 36297 2025 14 moon moon NN 36297 2025 15 's 's POS 36297 2025 16 disk disk NN 36297 2025 17 on on IN 36297 2025 18 rising rise VBG 36297 2025 19 was be VBD 36297 2025 20 accurately accurately RB 36297 2025 21 focused focus VBN 36297 2025 22 on on IN 36297 2025 23 a a DT 36297 2025 24 panchromatic panchromatic JJ 36297 2025 25 plate plate NN 36297 2025 26 . . . 36297 2026 1 A a DT 36297 2026 2 dense dense JJ 36297 2026 3 red red JJ 36297 2026 4 filter filter NN 36297 2026 5 was be VBD 36297 2026 6 maintained maintain VBN 36297 2026 7 over over IN 36297 2026 8 the the DT 36297 2026 9 lens lens NN 36297 2026 10 throughout throughout IN 36297 2026 11 in in IN 36297 2026 12 order order NN 36297 2026 13 to to TO 36297 2026 14 eliminate eliminate VB 36297 2026 15 the the DT 36297 2026 16 effect effect NN 36297 2026 17 of of IN 36297 2026 18 selective selective JJ 36297 2026 19 absorption absorption NN 36297 2026 20 of of IN 36297 2026 21 the the DT 36297 2026 22 atmosphere atmosphere NN 36297 2026 23 . . . 36297 2027 1 But but CC 36297 2027 2 the the DT 36297 2027 3 slightest slight JJS 36297 2027 4 enlargement enlargement NN 36297 2027 5 was be VBD 36297 2027 6 detected detect VBN 36297 2027 7 in in IN 36297 2027 8 the the DT 36297 2027 9 width width NN 36297 2027 10 of of IN 36297 2027 11 the the DT 36297 2027 12 path path NN 36297 2027 13 near near IN 36297 2027 14 the the DT 36297 2027 15 horizon horizon NN 36297 2027 16 as as IN 36297 2027 17 compared compare VBN 36297 2027 18 with with IN 36297 2027 19 that that DT 36297 2027 20 at at IN 36297 2027 21 the the DT 36297 2027 22 highest high JJS 36297 2027 23 altitude altitude NN 36297 2027 24 . . . 36297 2028 1 This this DT 36297 2028 2 copy copy NN 36297 2028 3 was be VBD 36297 2028 4 made make VBN 36297 2028 5 because because IN 36297 2028 6 it -PRON- PRP 36297 2028 7 was be VBD 36297 2028 8 thought think VBN 36297 2028 9 better well RBR 36297 2028 10 for for IN 36297 2028 11 reproduction reproduction NN 36297 2028 12 than than IN 36297 2028 13 the the DT 36297 2028 14 photograph photograph NN 36297 2028 15 which which WDT 36297 2028 16 would would MD 36297 2028 17 require require VB 36297 2028 18 a a DT 36297 2028 19 half half JJ 36297 2028 20 - - HYPH 36297 2028 21 tone tone NN 36297 2028 22 . . . 36297 2029 1 This this DT 36297 2029 2 is be VBZ 36297 2029 3 positive positive JJ 36297 2029 4 evidence evidence NN 36297 2029 5 that that IN 36297 2029 6 the the DT 36297 2029 7 phenomenon phenomenon NN 36297 2029 8 is be VBZ 36297 2029 9 an an DT 36297 2029 10 illusion illusion NN 36297 2029 11 . . . 36297 2030 1 [ [ -LRB- 36297 2030 2 Illustration illustration NN 36297 2030 3 : : : 36297 2030 4 Fig Fig NNP 36297 2030 5 . . . 36297 2031 1 78.--An 78.--an CD 36297 2031 2 accurate accurate JJ 36297 2031 3 tracing tracing NN 36297 2031 4 from from IN 36297 2031 5 a a DT 36297 2031 6 photograph photograph NN 36297 2031 7 ( ( -LRB- 36297 2031 8 continual continual JJ 36297 2031 9 exposure exposure NN 36297 2031 10 ) ) -RRB- 36297 2031 11 of of IN 36297 2031 12 the the DT 36297 2031 13 moon moon NN 36297 2031 14 rising rise VBG 36297 2031 15 . . . 36297 2031 16 ] ] -RRB- 36297 2032 1 Similarly similarly RB 36297 2032 2 Fig Fig NNP 36297 2032 3 . . . 36297 2033 1 79 79 CD 36297 2033 2 is be VBZ 36297 2033 3 a a DT 36297 2033 4 copy copy NN 36297 2033 5 of of IN 36297 2033 6 a a DT 36297 2033 7 negative negative NN 36297 2033 8 of of IN 36297 2033 9 several several JJ 36297 2033 10 exposures exposure NNS 36297 2033 11 of of IN 36297 2033 12 the the DT 36297 2033 13 sun sun NN 36297 2033 14 . . . 36297 2034 1 Owing owe VBG 36297 2034 2 to to IN 36297 2034 3 the the DT 36297 2034 4 greater great JJR 36297 2034 5 brightness brightness NN 36297 2034 6 , , , 36297 2034 7 continuous continuous JJ 36297 2034 8 exposure exposure NN 36297 2034 9 was be VBD 36297 2034 10 not not RB 36297 2034 11 considered consider VBN 36297 2034 12 feasible feasible JJ 36297 2034 13 . . . 36297 2035 1 A a DT 36297 2035 2 panchromatic panchromatic JJ 36297 2035 3 plate plate NN 36297 2035 4 and and CC 36297 2035 5 red red JJ 36297 2035 6 filter filter NN 36297 2035 7 was be VBD 36297 2035 8 used use VBN 36297 2035 9 as as IN 36297 2035 10 in in IN 36297 2035 11 the the DT 36297 2035 12 case case NN 36297 2035 13 of of IN 36297 2035 14 the the DT 36297 2035 15 moon moon NN 36297 2035 16 . . . 36297 2036 1 The the DT 36297 2036 2 various various JJ 36297 2036 3 exposures exposure NNS 36297 2036 4 were be VBD 36297 2036 5 made make VBN 36297 2036 6 without without IN 36297 2036 7 otherwise otherwise RB 36297 2036 8 adjusting adjust VBG 36297 2036 9 the the DT 36297 2036 10 camera camera NN 36297 2036 11 . . . 36297 2037 1 Again again RB 36297 2037 2 no no DT 36297 2037 3 enlargement enlargement NN 36297 2037 4 at at IN 36297 2037 5 the the DT 36297 2037 6 horizon horizon NN 36297 2037 7 was be VBD 36297 2037 8 found find VBN 36297 2037 9 . . . 36297 2038 1 [ [ -LRB- 36297 2038 2 Illustration illustration NN 36297 2038 3 : : : 36297 2038 4 Fig Fig NNP 36297 2038 5 . . . 36297 2039 1 79.--Accurate 79.--accurate CD 36297 2039 2 tracings tracing NNS 36297 2039 3 from from IN 36297 2039 4 a a DT 36297 2039 5 photograph photograph NN 36297 2039 6 ( ( -LRB- 36297 2039 7 short short JJ 36297 2039 8 exposures exposure NNS 36297 2039 9 at at IN 36297 2039 10 intervals interval NNS 36297 2039 11 ) ) -RRB- 36297 2039 12 of of IN 36297 2039 13 the the DT 36297 2039 14 sun sun NN 36297 2039 15 setting set VBG 36297 2039 16 . . . 36297 2039 17 ] ] -RRB- 36297 2040 1 Although although IN 36297 2040 2 the the DT 36297 2040 3 foregoing foregoing NN 36297 2040 4 is be VBZ 36297 2040 5 conclusive conclusive JJ 36297 2040 6 evidence evidence NN 36297 2040 7 of of IN 36297 2040 8 the the DT 36297 2040 9 illusory illusory JJ 36297 2040 10 character character NN 36297 2040 11 of of IN 36297 2040 12 the the DT 36297 2040 13 enlargement enlargement NN 36297 2040 14 there there EX 36297 2040 15 are be VBP 36297 2040 16 other other JJ 36297 2040 17 ways way NNS 36297 2040 18 of of IN 36297 2040 19 making make VBG 36297 2040 20 measurements measurement NNS 36297 2040 21 . . . 36297 2041 1 On on IN 36297 2041 2 viewing view VBG 36297 2041 3 the the DT 36297 2041 4 sun sun NN 36297 2041 5 at at IN 36297 2041 6 the the DT 36297 2041 7 horizon horizon NN 36297 2041 8 a a DT 36297 2041 9 bright bright JJ 36297 2041 10 after after IN 36297 2041 11 - - HYPH 36297 2041 12 image image NN 36297 2041 13 is be VBZ 36297 2041 14 obtained obtain VBN 36297 2041 15 . . . 36297 2042 1 This this DT 36297 2042 2 may may MD 36297 2042 3 now now RB 36297 2042 4 be be VB 36297 2042 5 projected project VBN 36297 2042 6 upon upon IN 36297 2042 7 the the DT 36297 2042 8 sky sky NN 36297 2042 9 as as IN 36297 2042 10 a a DT 36297 2042 11 background background NN 36297 2042 12 at at IN 36297 2042 13 any any DT 36297 2042 14 desired desire VBN 36297 2042 15 altitude altitude NN 36297 2042 16 . . . 36297 2043 1 It -PRON- PRP 36297 2043 2 will will MD 36297 2043 3 appear appear VB 36297 2043 4 much much RB 36297 2043 5 smaller small JJR 36297 2043 6 at at IN 36297 2043 7 the the DT 36297 2043 8 zenith zenith NN 36297 2043 9 than than IN 36297 2043 10 the the DT 36297 2043 11 sun sun NN 36297 2043 12 appears appear VBZ 36297 2043 13 at at IN 36297 2043 14 the the DT 36297 2043 15 horizon horizon NN 36297 2043 16 . . . 36297 2044 1 Certainly certainly RB 36297 2044 2 this this DT 36297 2044 3 is be VBZ 36297 2044 4 a a DT 36297 2044 5 simple simple JJ 36297 2044 6 and and CC 36297 2044 7 conclusive conclusive JJ 36297 2044 8 demonstration demonstration NN 36297 2044 9 of of IN 36297 2044 10 the the DT 36297 2044 11 illusion illusion NN 36297 2044 12 . . . 36297 2045 1 In in IN 36297 2045 2 this this DT 36297 2045 3 case case NN 36297 2045 4 the the DT 36297 2045 5 after after IN 36297 2045 6 - - HYPH 36297 2045 7 image image NN 36297 2045 8 of of IN 36297 2045 9 the the DT 36297 2045 10 sun sun NN 36297 2045 11 or or CC 36297 2045 12 the the DT 36297 2045 13 sun sun NN 36297 2045 14 itself -PRON- PRP 36297 2045 15 will will MD 36297 2045 16 usually usually RB 36297 2045 17 appear appear VB 36297 2045 18 at at IN 36297 2045 19 least least RBS 36297 2045 20 twice twice RB 36297 2045 21 as as RB 36297 2045 22 large large JJ 36297 2045 23 as as IN 36297 2045 24 the the DT 36297 2045 25 after after IN 36297 2045 26 - - HYPH 36297 2045 27 image image NN 36297 2045 28 at at IN 36297 2045 29 the the DT 36297 2045 30 zenith zenith NN 36297 2045 31 . . . 36297 2046 1 If if IN 36297 2046 2 the the DT 36297 2046 3 variation variation NN 36297 2046 4 in in IN 36297 2046 5 the the DT 36297 2046 6 position position NN 36297 2046 7 of of IN 36297 2046 8 the the DT 36297 2046 9 eyes eye NNS 36297 2046 10 is be VBZ 36297 2046 11 held hold VBN 36297 2046 12 to to TO 36297 2046 13 account account VB 36297 2046 14 for for IN 36297 2046 15 the the DT 36297 2046 16 illusion illusion NN 36297 2046 17 , , , 36297 2046 18 this this DT 36297 2046 19 explanation explanation NN 36297 2046 20 may may MD 36297 2046 21 be be VB 36297 2046 22 supported support VBN 36297 2046 23 by by IN 36297 2046 24 using use VBG 36297 2046 25 a a DT 36297 2046 26 horizontal horizontal JJ 36297 2046 27 telescope telescope NN 36297 2046 28 with with IN 36297 2046 29 adjustable adjustable JJ 36297 2046 30 cross cross NN 36297 2046 31 - - NNS 36297 2046 32 hairs hair NNS 36297 2046 33 , , , 36297 2046 34 and and CC 36297 2046 35 a a DT 36297 2046 36 mirror mirror NN 36297 2046 37 . . . 36297 2047 1 By by IN 36297 2047 2 varying vary VBG 36297 2047 3 the the DT 36297 2047 4 position position NN 36297 2047 5 of of IN 36297 2047 6 the the DT 36297 2047 7 latter latter JJ 36297 2047 8 the the DT 36297 2047 9 disk disk NN 36297 2047 10 of of IN 36297 2047 11 the the DT 36297 2047 12 sun sun NN 36297 2047 13 may may MD 36297 2047 14 be be VB 36297 2047 15 measured measure VBN 36297 2047 16 at at IN 36297 2047 17 any any DT 36297 2047 18 altitude altitude NN 36297 2047 19 without without IN 36297 2047 20 varying vary VBG 36297 2047 21 the the DT 36297 2047 22 position position NN 36297 2047 23 of of IN 36297 2047 24 the the DT 36297 2047 25 eye eye NN 36297 2047 26 . . . 36297 2048 1 When when WRB 36297 2048 2 everything everything NN 36297 2048 3 is be VBZ 36297 2048 4 eliminated eliminate VBN 36297 2048 5 from from IN 36297 2048 6 the the DT 36297 2048 7 field field NN 36297 2048 8 but but CC 36297 2048 9 the the DT 36297 2048 10 moon moon NN 36297 2048 11 's 's POS 36297 2048 12 disk disk NN 36297 2048 13 , , , 36297 2048 14 it -PRON- PRP 36297 2048 15 is be VBZ 36297 2048 16 found find VBN 36297 2048 17 to to TO 36297 2048 18 be be VB 36297 2048 19 constant constant JJ 36297 2048 20 in in IN 36297 2048 21 size size NN 36297 2048 22 . . . 36297 2049 1 However however RB 36297 2049 2 , , , 36297 2049 3 this this DT 36297 2049 4 is be VBZ 36297 2049 5 not not RB 36297 2049 6 conclusive conclusive JJ 36297 2049 7 evidence evidence NN 36297 2049 8 that that IN 36297 2049 9 the the DT 36297 2049 10 variation variation NN 36297 2049 11 in in IN 36297 2049 12 the the DT 36297 2049 13 position position NN 36297 2049 14 of of IN 36297 2049 15 the the DT 36297 2049 16 line line NN 36297 2049 17 of of IN 36297 2049 18 sight sight NN 36297 2049 19 accounts account NNS 36297 2049 20 for for IN 36297 2049 21 the the DT 36297 2049 22 illusion illusion NN 36297 2049 23 . . . 36297 2050 1 As as IN 36297 2050 2 a a DT 36297 2050 3 demonstration demonstration NN 36297 2050 4 of of IN 36297 2050 5 the the DT 36297 2050 6 absence absence NN 36297 2050 7 of of IN 36297 2050 8 enlargement enlargement NN 36297 2050 9 of of IN 36297 2050 10 the the DT 36297 2050 11 size size NN 36297 2050 12 of of IN 36297 2050 13 the the DT 36297 2050 14 moon moon NN 36297 2050 15 near near IN 36297 2050 16 the the DT 36297 2050 17 horizon horizon NN 36297 2050 18 some some DT 36297 2050 19 have have VBP 36297 2050 20 brought bring VBN 36297 2050 21 forward forward RB 36297 2050 22 measurements measurement NNS 36297 2050 23 of of IN 36297 2050 24 the the DT 36297 2050 25 lunar lunar JJ 36297 2050 26 circles circle NNS 36297 2050 27 and and CC 36297 2050 28 similar similar JJ 36297 2050 29 phenomena phenomenon NNS 36297 2050 30 . . . 36297 2051 1 These these DT 36297 2051 2 are be VBP 36297 2051 3 said say VBN 36297 2051 4 to to TO 36297 2051 5 be be VB 36297 2051 6 unaffected unaffected JJ 36297 2051 7 by by IN 36297 2051 8 the the DT 36297 2051 9 altitude altitude NN 36297 2051 10 of of IN 36297 2051 11 the the DT 36297 2051 12 moon moon NN 36297 2051 13 except except IN 36297 2051 14 for for IN 36297 2051 15 refraction refraction NN 36297 2051 16 . . . 36297 2052 1 But but CC 36297 2052 2 even even RB 36297 2052 3 this this DT 36297 2052 4 does do VBZ 36297 2052 5 not not RB 36297 2052 6 change change VB 36297 2052 7 the the DT 36297 2052 8 horizontal horizontal JJ 36297 2052 9 diameter diameter NN 36297 2052 10 and and CC 36297 2052 11 actually actually RB 36297 2052 12 diminishes diminish VBZ 36297 2052 13 the the DT 36297 2052 14 vertical vertical JJ 36297 2052 15 one one NN 36297 2052 16 . . . 36297 2053 1 The the DT 36297 2053 2 moon moon NN 36297 2053 3 is be VBZ 36297 2053 4 further further RB 36297 2053 5 away away RB 36297 2053 6 when when WRB 36297 2053 7 near near IN 36297 2053 8 the the DT 36297 2053 9 horizon horizon NN 36297 2053 10 than than IN 36297 2053 11 when when WRB 36297 2053 12 at at IN 36297 2053 13 the the DT 36297 2053 14 zenith zenith NN 36297 2053 15 , , , 36297 2053 16 the the DT 36297 2053 17 maximum maximum JJ 36297 2053 18 increase increase NN 36297 2053 19 in in IN 36297 2053 20 distance distance NN 36297 2053 21 being be VBG 36297 2053 22 one one CD 36297 2053 23 - - HYPH 36297 2053 24 half half NN 36297 2053 25 the the DT 36297 2053 26 diameter diameter NN 36297 2053 27 of of IN 36297 2053 28 the the DT 36297 2053 29 earth earth NN 36297 2053 30 . . . 36297 2054 1 This this DT 36297 2054 2 would would MD 36297 2054 3 make make VB 36297 2054 4 the the DT 36297 2054 5 moon moon NN 36297 2054 6 appear appear VB 36297 2054 7 about about RB 36297 2054 8 one one CD 36297 2054 9 - - HYPH 36297 2054 10 sixtieth sixtieth NN 36297 2054 11 , , , 36297 2054 12 or or CC 36297 2054 13 one one CD 36297 2054 14 - - HYPH 36297 2054 15 half half NN 36297 2054 16 minute minute NN 36297 2054 17 of of IN 36297 2054 18 arc arc NN 36297 2054 19 smaller small JJR 36297 2054 20 at at IN 36297 2054 21 the the DT 36297 2054 22 horizon horizon NN 36297 2054 23 than than IN 36297 2054 24 at at IN 36297 2054 25 the the DT 36297 2054 26 zenith zenith NN 36297 2054 27 . . . 36297 2055 1 This this DT 36297 2055 2 is be VBZ 36297 2055 3 not not RB 36297 2055 4 only only RB 36297 2055 5 in in IN 36297 2055 6 the the DT 36297 2055 7 wrong wrong JJ 36297 2055 8 direction direction NN 36297 2055 9 to to TO 36297 2055 10 aid aid VB 36297 2055 11 in in IN 36297 2055 12 accounting accounting NN 36297 2055 13 for for IN 36297 2055 14 the the DT 36297 2055 15 apparent apparent JJ 36297 2055 16 enlargement enlargement NN 36297 2055 17 , , , 36297 2055 18 but but CC 36297 2055 19 it -PRON- PRP 36297 2055 20 is be VBZ 36297 2055 21 so so RB 36297 2055 22 slight slight JJ 36297 2055 23 as as IN 36297 2055 24 to to TO 36297 2055 25 be be VB 36297 2055 26 imperceptible imperceptible JJ 36297 2055 27 to to IN 36297 2055 28 the the DT 36297 2055 29 unaided unaided JJ 36297 2055 30 eye eye NN 36297 2055 31 . . . 36297 2056 1 Nearly nearly RB 36297 2056 2 two two CD 36297 2056 3 centuries century NNS 36297 2056 4 ago ago RB 36297 2056 5 Robert Robert NNP 36297 2056 6 Smith Smith NNP 36297 2056 7 and and CC 36297 2056 8 his -PRON- PRP$ 36297 2056 9 colleagues colleague NNS 36297 2056 10 concluded conclude VBD 36297 2056 11 that that IN 36297 2056 12 the the DT 36297 2056 13 sky sky NN 36297 2056 14 appears appear VBZ 36297 2056 15 about about IN 36297 2056 16 three three CD 36297 2056 17 times time NNS 36297 2056 18 as as RB 36297 2056 19 far far RB 36297 2056 20 away away RB 36297 2056 21 at at IN 36297 2056 22 the the DT 36297 2056 23 horizon horizon NN 36297 2056 24 as as IN 36297 2056 25 at at IN 36297 2056 26 the the DT 36297 2056 27 zenith zenith NN 36297 2056 28 . . . 36297 2057 1 They -PRON- PRP 36297 2057 2 found find VBD 36297 2057 3 that that IN 36297 2057 4 the the DT 36297 2057 5 relative relative JJ 36297 2057 6 apparent apparent JJ 36297 2057 7 diameters diameter NNS 36297 2057 8 of of IN 36297 2057 9 the the DT 36297 2057 10 sun sun NN 36297 2057 11 and and CC 36297 2057 12 of of IN 36297 2057 13 the the DT 36297 2057 14 moon moon NN 36297 2057 15 varied vary VBD 36297 2057 16 with with IN 36297 2057 17 altitude altitude NN 36297 2057 18 as as IN 36297 2057 19 follows follow VBZ 36297 2057 20 : : : 36297 2057 21 Altitude altitude VB 36297 2057 22 Relative relative JJ 36297 2057 23 apparent apparent JJ 36297 2057 24 diameter diameter NN 36297 2057 25 0 0 CD 36297 2057 26 deg deg NN 36297 2057 27 . . . 36297 2058 1 ( ( -LRB- 36297 2058 2 horizon horizon NN 36297 2058 3 ) ) -RRB- 36297 2058 4 100 100 CD 36297 2058 5 15 15 CD 36297 2058 6 " " CD 36297 2058 7 68 68 CD 36297 2058 8 30 30 CD 36297 2058 9 " " CD 36297 2058 10 50 50 CD 36297 2058 11 45 45 CD 36297 2058 12 " " CD 36297 2058 13 40 40 CD 36297 2058 14 60 60 CD 36297 2058 15 " " CD 36297 2058 16 34 34 CD 36297 2058 17 75 75 CD 36297 2058 18 " " CD 36297 2058 19 31 31 CD 36297 2058 20 90 90 CD 36297 2058 21 " " '' 36297 2058 22 ( ( -LRB- 36297 2058 23 zenith zenith NNP 36297 2058 24 ) ) -RRB- 36297 2058 25 30 30 CD 36297 2058 26 [ [ -LRB- 36297 2058 27 Illustration illustration NN 36297 2058 28 : : : 36297 2058 29 Fig Fig NNP 36297 2058 30 . . . 36297 2059 1 80.--Explanation 80.--explanation CD 36297 2059 2 offered offer VBN 36297 2059 3 by by IN 36297 2059 4 Smith Smith NNP 36297 2059 5 of of IN 36297 2059 6 the the DT 36297 2059 7 apparent apparent JJ 36297 2059 8 enlargement enlargement NN 36297 2059 9 of of IN 36297 2059 10 heavenly heavenly JJ 36297 2059 11 bodies body NNS 36297 2059 12 near near IN 36297 2059 13 the the DT 36297 2059 14 horizon horizon NN 36297 2059 15 . . . 36297 2059 16 ] ] -RRB- 36297 2060 1 They -PRON- PRP 36297 2060 2 also also RB 36297 2060 3 found find VBD 36297 2060 4 a a DT 36297 2060 5 similar similar JJ 36297 2060 6 relation relation NN 36297 2060 7 between between IN 36297 2060 8 the the DT 36297 2060 9 altitude altitude NN 36297 2060 10 and and CC 36297 2060 11 the the DT 36297 2060 12 apparent apparent JJ 36297 2060 13 size size NN 36297 2060 14 of of IN 36297 2060 15 constellations constellation NNS 36297 2060 16 . . . 36297 2061 1 Fig fig NN 36297 2061 2 . . . 36297 2062 1 80 80 CD 36297 2062 2 is be VBZ 36297 2062 3 a a DT 36297 2062 4 reproduction reproduction NN 36297 2062 5 of of IN 36297 2062 6 a a DT 36297 2062 7 diagram diagram NN 36297 2062 8 which which WDT 36297 2062 9 Smith Smith NNP 36297 2062 10 submitted submit VBD 36297 2062 11 as as IN 36297 2062 12 illustrating illustrate VBG 36297 2062 13 the the DT 36297 2062 14 cause cause NN 36297 2062 15 of of IN 36297 2062 16 the the DT 36297 2062 17 illusion illusion NN 36297 2062 18 of of IN 36297 2062 19 apparent apparent JJ 36297 2062 20 enlargement enlargement NN 36297 2062 21 of of IN 36297 2062 22 heavenly heavenly JJ 36297 2062 23 bodies body NNS 36297 2062 24 near near IN 36297 2062 25 the the DT 36297 2062 26 horizon horizon NN 36297 2062 27 . . . 36297 2063 1 If if IN 36297 2063 2 the the DT 36297 2063 3 sky sky NN 36297 2063 4 seems seem VBZ 36297 2063 5 to to TO 36297 2063 6 be be VB 36297 2063 7 a a DT 36297 2063 8 flattened flattened JJ 36297 2063 9 vault vault NN 36297 2063 10 , , , 36297 2063 11 the the DT 36297 2063 12 reason reason NN 36297 2063 13 for for IN 36297 2063 14 the the DT 36297 2063 15 apparent apparent JJ 36297 2063 16 decrease decrease NN 36297 2063 17 in in IN 36297 2063 18 the the DT 36297 2063 19 size size NN 36297 2063 20 of of IN 36297 2063 21 the the DT 36297 2063 22 sun sun NN 36297 2063 23 , , , 36297 2063 24 the the DT 36297 2063 25 moon moon NN 36297 2063 26 , , , 36297 2063 27 or or CC 36297 2063 28 the the DT 36297 2063 29 constellations constellation NNS 36297 2063 30 , , , 36297 2063 31 as as IN 36297 2063 32 they -PRON- PRP 36297 2063 33 approach approach VBP 36297 2063 34 the the DT 36297 2063 35 zenith zenith NN 36297 2063 36 , , , 36297 2063 37 is be VBZ 36297 2063 38 suggested suggest VBN 36297 2063 39 by by IN 36297 2063 40 the the DT 36297 2063 41 diagram diagram NN 36297 2063 42 . . . 36297 2064 1 It -PRON- PRP 36297 2064 2 has have VBZ 36297 2064 3 also also RB 36297 2064 4 been be VBN 36297 2064 5 suggested suggest VBN 36297 2064 6 that that IN 36297 2064 7 such such JJ 36297 2064 8 illusions illusion NNS 36297 2064 9 as as IN 36297 2064 10 those those DT 36297 2064 11 shown show VBN 36297 2064 12 in in IN 36297 2064 13 Figs Figs NNP 36297 2064 14 . . . 36297 2065 1 10 10 CD 36297 2065 2 and and CC 36297 2065 3 19 19 CD 36297 2065 4 are be VBP 36297 2065 5 associated associate VBN 36297 2065 6 with with IN 36297 2065 7 that that DT 36297 2065 8 of of IN 36297 2065 9 apparent apparent JJ 36297 2065 10 enlargement enlargement NN 36297 2065 11 of of IN 36297 2065 12 heavenly heavenly JJ 36297 2065 13 bodies body NNS 36297 2065 14 near near IN 36297 2065 15 the the DT 36297 2065 16 horizon horizon NN 36297 2065 17 . . . 36297 2066 1 It -PRON- PRP 36297 2066 2 will will MD 36297 2066 3 be be VB 36297 2066 4 left leave VBN 36297 2066 5 to to IN 36297 2066 6 the the DT 36297 2066 7 reader reader NN 36297 2066 8 to to TO 36297 2066 9 decide decide VB 36297 2066 10 whether whether IN 36297 2066 11 or or CC 36297 2066 12 not not RB 36297 2066 13 there there EX 36297 2066 14 is be VBZ 36297 2066 15 any any DT 36297 2066 16 similarity similarity NN 36297 2066 17 or or CC 36297 2066 18 relation relation NN 36297 2066 19 . . . 36297 2067 1 Zoth Zoth NNP 36297 2067 2 appears appear VBZ 36297 2067 3 to to TO 36297 2067 4 have have VB 36297 2067 5 proved prove VBN 36297 2067 6 , , , 36297 2067 7 to to IN 36297 2067 8 his -PRON- PRP$ 36297 2067 9 own own JJ 36297 2067 10 satisfaction satisfaction NN 36297 2067 11 at at IN 36297 2067 12 least least JJS 36297 2067 13 , , , 36297 2067 14 that that IN 36297 2067 15 the the DT 36297 2067 16 chief chief JJ 36297 2067 17 factors factor NNS 36297 2067 18 are be VBP 36297 2067 19 not not RB 36297 2067 20 aerial aerial JJ 36297 2067 21 perspective perspective NN 36297 2067 22 , , , 36297 2067 23 the the DT 36297 2067 24 apparent apparent JJ 36297 2067 25 curvature curvature NN 36297 2067 26 or or CC 36297 2067 27 form form NN 36297 2067 28 of of IN 36297 2067 29 the the DT 36297 2067 30 sky sky NN 36297 2067 31 , , , 36297 2067 32 and and CC 36297 2067 33 the the DT 36297 2067 34 comparison comparison NN 36297 2067 35 of of IN 36297 2067 36 the the DT 36297 2067 37 sun sun NN 36297 2067 38 or or CC 36297 2067 39 moon moon NN 36297 2067 40 with with IN 36297 2067 41 objects object NNS 36297 2067 42 of of IN 36297 2067 43 known know VBN 36297 2067 44 size size NN 36297 2067 45 . . . 36297 2068 1 He -PRON- PRP 36297 2068 2 maintained maintain VBD 36297 2068 3 that that IN 36297 2068 4 the the DT 36297 2068 5 illusion illusion NN 36297 2068 6 of of IN 36297 2068 7 apparent apparent JJ 36297 2068 8 decrease decrease NN 36297 2068 9 in in IN 36297 2068 10 size size NN 36297 2068 11 as as IN 36297 2068 12 these these DT 36297 2068 13 bodies body NNS 36297 2068 14 increase increase VBP 36297 2068 15 in in IN 36297 2068 16 altitude altitude NN 36297 2068 17 is be VBZ 36297 2068 18 due due JJ 36297 2068 19 to to IN 36297 2068 20 the the DT 36297 2068 21 necessary necessary JJ 36297 2068 22 elevation elevation NN 36297 2068 23 of of IN 36297 2068 24 the the DT 36297 2068 25 eye eye NN 36297 2068 26 . . . 36297 2069 1 No no DT 36297 2069 2 available available JJ 36297 2069 3 experimental experimental JJ 36297 2069 4 evidence evidence NN 36297 2069 5 seems seem VBZ 36297 2069 6 to to TO 36297 2069 7 refute refute VB 36297 2069 8 his -PRON- PRP$ 36297 2069 9 statement statement NN 36297 2069 10 . . . 36297 2070 1 In in IN 36297 2070 2 fact fact NN 36297 2070 3 , , , 36297 2070 4 Guttman Guttman NNP 36297 2070 5 's 's POS 36297 2070 6 experiments experiment NNS 36297 2070 7 seem seem VBP 36297 2070 8 to to TO 36297 2070 9 confirm confirm VB 36297 2070 10 it -PRON- PRP 36297 2070 11 to to IN 36297 2070 12 some some DT 36297 2070 13 extent extent NN 36297 2070 14 . . . 36297 2071 1 The the DT 36297 2071 2 latter latter JJ 36297 2071 3 found find VBD 36297 2071 4 that that IN 36297 2071 5 there there EX 36297 2071 6 was be VBD 36297 2071 7 an an DT 36297 2071 8 apparent apparent JJ 36297 2071 9 diminution diminution NN 36297 2071 10 in in IN 36297 2071 11 the the DT 36297 2071 12 size size NN 36297 2071 13 of of IN 36297 2071 14 objects object NNS 36297 2071 15 of of IN 36297 2071 16 several several JJ 36297 2071 17 per per IN 36297 2071 18 cent cent NN 36297 2071 19 , , , 36297 2071 20 in in IN 36297 2071 21 objects object NNS 36297 2071 22 slightly slightly RB 36297 2071 23 more more JJR 36297 2071 24 than than IN 36297 2071 25 a a DT 36297 2071 26 foot foot NN 36297 2071 27 distant distant JJ 36297 2071 28 from from IN 36297 2071 29 the the DT 36297 2071 30 eyes eye NNS 36297 2071 31 , , , 36297 2071 32 as as IN 36297 2071 33 they -PRON- PRP 36297 2071 34 were be VBD 36297 2071 35 raised raise VBN 36297 2071 36 so so IN 36297 2071 37 that that IN 36297 2071 38 the the DT 36297 2071 39 line line NN 36297 2071 40 of of IN 36297 2071 41 vision vision NN 36297 2071 42 changed change VBN 36297 2071 43 from from IN 36297 2071 44 horizontal horizontal JJ 36297 2071 45 to to IN 36297 2071 46 an an DT 36297 2071 47 angle angle NN 36297 2071 48 of of IN 36297 2071 49 forty forty CD 36297 2071 50 degrees degree NNS 36297 2071 51 . . . 36297 2072 1 The the DT 36297 2072 2 magnitude magnitude NN 36297 2072 3 of of IN 36297 2072 4 this this DT 36297 2072 5 diminution diminution NN 36297 2072 6 is be VBZ 36297 2072 7 not not RB 36297 2072 8 sufficient sufficient JJ 36297 2072 9 to to TO 36297 2072 10 promote promote VB 36297 2072 11 the the DT 36297 2072 12 acceptance acceptance NN 36297 2072 13 of of IN 36297 2072 14 elevation elevation NN 36297 2072 15 of of IN 36297 2072 16 the the DT 36297 2072 17 eyes eye NNS 36297 2072 18 as as IN 36297 2072 19 a a DT 36297 2072 20 primary primary JJ 36297 2072 21 cause cause NN 36297 2072 22 of of IN 36297 2072 23 the the DT 36297 2072 24 illusion illusion NN 36297 2072 25 in in IN 36297 2072 26 respect respect NN 36297 2072 27 to to IN 36297 2072 28 the the DT 36297 2072 29 heavenly heavenly JJ 36297 2072 30 bodies body NNS 36297 2072 31 . . . 36297 2073 1 Notwithstanding notwithstanding IN 36297 2073 2 arguments argument NNS 36297 2073 3 to to IN 36297 2073 4 the the DT 36297 2073 5 contrary contrary NN 36297 2073 6 , , , 36297 2073 7 it -PRON- PRP 36297 2073 8 is be VBZ 36297 2073 9 difficult difficult JJ 36297 2073 10 to to TO 36297 2073 11 eliminate eliminate VB 36297 2073 12 aerial aerial JJ 36297 2073 13 perspective perspective NN 36297 2073 14 and and CC 36297 2073 15 the the DT 36297 2073 16 apparent apparent JJ 36297 2073 17 form form NN 36297 2073 18 of of IN 36297 2073 19 the the DT 36297 2073 20 sky sky NN 36297 2073 21 as as IN 36297 2073 22 important important JJ 36297 2073 23 factors factor NNS 36297 2073 24 . . . 36297 2074 1 That that IN 36297 2074 2 no no DT 36297 2074 3 explanation explanation NN 36297 2074 4 of of IN 36297 2074 5 this this DT 36297 2074 6 illusion illusion NN 36297 2074 7 has have VBZ 36297 2074 8 been be VBN 36297 2074 9 generally generally RB 36297 2074 10 accepted accept VBN 36297 2074 11 indicates indicate VBZ 36297 2074 12 the the DT 36297 2074 13 complexity complexity NN 36297 2074 14 of of IN 36297 2074 15 the the DT 36297 2074 16 causes cause NNS 36297 2074 17 . . . 36297 2075 1 Certainly certainly RB 36297 2075 2 the the DT 36297 2075 3 reddish reddish JJ 36297 2075 4 coloration coloration NN 36297 2075 5 of of IN 36297 2075 6 the the DT 36297 2075 7 sun sun NN 36297 2075 8 and and CC 36297 2075 9 moon moon NN 36297 2075 10 near near IN 36297 2075 11 the the DT 36297 2075 12 horizon horizon NN 36297 2075 13 and and CC 36297 2075 14 the the DT 36297 2075 15 contrast contrast NN 36297 2075 16 with with IN 36297 2075 17 the the DT 36297 2075 18 misty misty JJ 36297 2075 19 atmosphere atmosphere NN 36297 2075 20 combined combine VBN 36297 2075 21 with with IN 36297 2075 22 the the DT 36297 2075 23 general general JJ 36297 2075 24 vague vague JJ 36297 2075 25 aspect aspect NN 36297 2075 26 of of IN 36297 2075 27 the the DT 36297 2075 28 atmosphere atmosphere NN 36297 2075 29 contribute contribute VBP 36297 2075 30 something something NN 36297 2075 31 if if IN 36297 2075 32 no no DT 36297 2075 33 more more JJR 36297 2075 34 than than IN 36297 2075 35 a a DT 36297 2075 36 deepening deepening NN 36297 2075 37 of of IN 36297 2075 38 the the DT 36297 2075 39 mystery mystery NN 36297 2075 40 . . . 36297 2076 1 Variations variation NNS 36297 2076 2 in in IN 36297 2076 3 the the DT 36297 2076 4 transparency transparency NN 36297 2076 5 and and CC 36297 2076 6 brightness brightness NN 36297 2076 7 of of IN 36297 2076 8 the the DT 36297 2076 9 air air NN 36297 2076 10 must must MD 36297 2076 11 play play VB 36297 2076 12 some some DT 36297 2076 13 part part NN 36297 2076 14 . . . 36297 2077 1 In in IN 36297 2077 2 discussing discuss VBG 36297 2077 3 the the DT 36297 2077 4 great great JJ 36297 2077 5 illusions illusion NNS 36297 2077 6 of of IN 36297 2077 7 nature nature NN 36297 2077 8 , , , 36297 2077 9 it -PRON- PRP 36297 2077 10 appears appear VBZ 36297 2077 11 appropriate appropriate JJ 36297 2077 12 to to TO 36297 2077 13 introduce introduce VB 36297 2077 14 the the DT 36297 2077 15 mirage mirage NN 36297 2077 16 . . . 36297 2078 1 This this DT 36297 2078 2 is be VBZ 36297 2078 3 not not RB 36297 2078 4 due due JJ 36297 2078 5 to to IN 36297 2078 6 an an DT 36297 2078 7 error error NN 36297 2078 8 of of IN 36297 2078 9 sense sense NN 36297 2078 10 of of IN 36297 2078 11 judgment judgment NN 36297 2078 12 . . . 36297 2079 1 The the DT 36297 2079 2 eye eye NN 36297 2079 3 sees see VBZ 36297 2079 4 what what WP 36297 2079 5 is be VBZ 36297 2079 6 presented present VBN 36297 2079 7 but but CC 36297 2079 8 the the DT 36297 2079 9 inversions inversion NNS 36297 2079 10 and and CC 36297 2079 11 other other JJ 36297 2079 12 peculiar peculiar JJ 36297 2079 13 effects effect NNS 36297 2079 14 are be VBP 36297 2079 15 due due JJ 36297 2079 16 to to IN 36297 2079 17 variations variation NNS 36297 2079 18 in in IN 36297 2079 19 the the DT 36297 2079 20 refractive refractive JJ 36297 2079 21 index index NN 36297 2079 22 of of IN 36297 2079 23 the the DT 36297 2079 24 atmosphere atmosphere NN 36297 2079 25 . . . 36297 2080 1 These these DT 36297 2080 2 variations variation NNS 36297 2080 3 account account VBP 36297 2080 4 for for IN 36297 2080 5 the the DT 36297 2080 6 appearance appearance NN 36297 2080 7 of of IN 36297 2080 8 " " `` 36297 2080 9 lakes lake NNS 36297 2080 10 " " '' 36297 2080 11 in in IN 36297 2080 12 arid arid NNP 36297 2080 13 deserts desert NNS 36297 2080 14 , , , 36297 2080 15 of of IN 36297 2080 16 the the DT 36297 2080 17 inverted inverted JJ 36297 2080 18 images image NNS 36297 2080 19 of of IN 36297 2080 20 ships ship NNS 36297 2080 21 and and CC 36297 2080 22 icebergs iceberg NNS 36297 2080 23 on on IN 36297 2080 24 the the DT 36297 2080 25 sea sea NN 36297 2080 26 and and CC 36297 2080 27 of of IN 36297 2080 28 " " `` 36297 2080 29 pools pool NNS 36297 2080 30 of of IN 36297 2080 31 water water NN 36297 2080 32 " " '' 36297 2080 33 on on IN 36297 2080 34 pavements pavement NNS 36297 2080 35 . . . 36297 2081 1 The the DT 36297 2081 2 refractive refractive JJ 36297 2081 3 index index NN 36297 2081 4 of of IN 36297 2081 5 the the DT 36297 2081 6 atmosphere atmosphere NN 36297 2081 7 is be VBZ 36297 2081 8 continually continually RB 36297 2081 9 changing change VBG 36297 2081 10 , , , 36297 2081 11 but but CC 36297 2081 12 the the DT 36297 2081 13 changes change NNS 36297 2081 14 are be VBP 36297 2081 15 chiefly chiefly RB 36297 2081 16 of of IN 36297 2081 17 two two CD 36297 2081 18 types type NNS 36297 2081 19 : : : 36297 2081 20 ( ( -LRB- 36297 2081 21 1 1 LS 36297 2081 22 ) ) -RRB- 36297 2081 23 those those DT 36297 2081 24 due due JJ 36297 2081 25 to to IN 36297 2081 26 irregular irregular JJ 36297 2081 27 heating heating NN 36297 2081 28 and and CC 36297 2081 29 ( ( -LRB- 36297 2081 30 2 2 LS 36297 2081 31 ) ) -RRB- 36297 2081 32 those those DT 36297 2081 33 due due JJ 36297 2081 34 to to IN 36297 2081 35 normal normal JJ 36297 2081 36 variation variation NN 36297 2081 37 with with IN 36297 2081 38 altitude altitude NN 36297 2081 39 . . . 36297 2082 1 The the DT 36297 2082 2 former former JJ 36297 2082 3 type type NN 36297 2082 4 are be VBP 36297 2082 5 particularly particularly RB 36297 2082 6 responsible responsible JJ 36297 2082 7 for for IN 36297 2082 8 mirages mirage NNS 36297 2082 9 . . . 36297 2083 1 [ [ -LRB- 36297 2083 2 Illustration illustration NN 36297 2083 3 : : : 36297 2083 4 Fig Fig NNP 36297 2083 5 . . . 36297 2084 1 81.--Explanation 81.--explanation CD 36297 2084 2 of of IN 36297 2084 3 a a DT 36297 2084 4 common common JJ 36297 2084 5 mirage mirage NN 36297 2084 6 . . . 36297 2084 7 ] ] -RRB- 36297 2085 1 A a DT 36297 2085 2 common common JJ 36297 2085 3 type type NN 36297 2085 4 of of IN 36297 2085 5 mirage mirage NN 36297 2085 6 is be VBZ 36297 2085 7 illustrated illustrate VBN 36297 2085 8 in in IN 36297 2085 9 Fig Fig NNP 36297 2085 10 . . . 36297 2086 1 81 81 CD 36297 2086 2 . . . 36297 2087 1 This this DT 36297 2087 2 is be VBZ 36297 2087 3 often often RB 36297 2087 4 visible visible JJ 36297 2087 5 on on IN 36297 2087 6 deserts desert NNS 36297 2087 7 where where WRB 36297 2087 8 the the DT 36297 2087 9 hot hot JJ 36297 2087 10 sand sand NN 36297 2087 11 causes cause VBZ 36297 2087 12 the the DT 36297 2087 13 adjacent adjacent JJ 36297 2087 14 layer layer NN 36297 2087 15 of of IN 36297 2087 16 air air NN 36297 2087 17 to to TO 36297 2087 18 expand expand VB 36297 2087 19 and and CC 36297 2087 20 therefore therefore RB 36297 2087 21 , , , 36297 2087 22 the the DT 36297 2087 23 refractive refractive JJ 36297 2087 24 index index NN 36297 2087 25 to to TO 36297 2087 26 increase increase VB 36297 2087 27 . . . 36297 2088 1 This this DT 36297 2088 2 layer layer NN 36297 2088 3 of of IN 36297 2088 4 air air NN 36297 2088 5 then then RB 36297 2088 6 may may MD 36297 2088 7 be be VB 36297 2088 8 considered consider VBN 36297 2088 9 to to TO 36297 2088 10 operate operate VB 36297 2088 11 like like IN 36297 2088 12 an an DT 36297 2088 13 inverted inverted JJ 36297 2088 14 prism prism NN 36297 2088 15 . . . 36297 2089 1 The the DT 36297 2089 2 rays ray NNS 36297 2089 3 of of IN 36297 2089 4 light light NN 36297 2089 5 close close RB 36297 2089 6 to to IN 36297 2089 7 the the DT 36297 2089 8 earth earth NN 36297 2089 9 are be VBP 36297 2089 10 bent bent JJ 36297 2089 11 convex convex NNS 36297 2089 12 to to IN 36297 2089 13 the the DT 36297 2089 14 earth earth NN 36297 2089 15 and and CC 36297 2089 16 the the DT 36297 2089 17 curvature curvature NN 36297 2089 18 of of IN 36297 2089 19 those those DT 36297 2089 20 higher high JJR 36297 2089 21 up up RP 36297 2089 22 may may MD 36297 2089 23 be be VB 36297 2089 24 reversed reverse VBN 36297 2089 25 . . . 36297 2090 1 The the DT 36297 2090 2 reason reason NN 36297 2090 3 that that IN 36297 2090 4 an an DT 36297 2090 5 object object NN 36297 2090 6 may may MD 36297 2090 7 appear appear VB 36297 2090 8 double double JJ 36297 2090 9 , , , 36297 2090 10 or or CC 36297 2090 11 as as IN 36297 2090 12 if if IN 36297 2090 13 mirrored mirror VBN 36297 2090 14 by by IN 36297 2090 15 the the DT 36297 2090 16 surface surface NN 36297 2090 17 of of IN 36297 2090 18 a a DT 36297 2090 19 nearby nearby JJ 36297 2090 20 pond pond NN 36297 2090 21 , , , 36297 2090 22 is be VBZ 36297 2090 23 clearly clearly RB 36297 2090 24 shown show VBN 36297 2090 25 in in IN 36297 2090 26 the the DT 36297 2090 27 illustration illustration NN 36297 2090 28 . . . 36297 2091 1 Similar similar JJ 36297 2091 2 atmospheric atmospheric JJ 36297 2091 3 conditions condition NNS 36297 2091 4 are be VBP 36297 2091 5 found find VBN 36297 2091 6 sometimes sometimes RB 36297 2091 7 over over IN 36297 2091 8 pavements pavement NNS 36297 2091 9 and and CC 36297 2091 10 over over IN 36297 2091 11 bodies body NNS 36297 2091 12 of of IN 36297 2091 13 water water NN 36297 2091 14 . . . 36297 2092 1 As as IN 36297 2092 2 one one CD 36297 2092 3 rides ride VBZ 36297 2092 4 along along RB 36297 2092 5 in in IN 36297 2092 6 an an DT 36297 2092 7 automobile automobile NN 36297 2092 8 ascending ascend VBG 36297 2092 9 an an DT 36297 2092 10 incline incline NN 36297 2092 11 , , , 36297 2092 12 if if IN 36297 2092 13 he -PRON- PRP 36297 2092 14 closely closely RB 36297 2092 15 observes observe VBZ 36297 2092 16 at at IN 36297 2092 17 the the DT 36297 2092 18 moment moment NN 36297 2092 19 the the DT 36297 2092 20 line line NN 36297 2092 21 of of IN 36297 2092 22 sight sight NN 36297 2092 23 is be VBZ 36297 2092 24 just just RB 36297 2092 25 on on IN 36297 2092 26 the the DT 36297 2092 27 level level NN 36297 2092 28 of of IN 36297 2092 29 the the DT 36297 2092 30 pavement pavement NN 36297 2092 31 , , , 36297 2092 32 he -PRON- PRP 36297 2092 33 will will MD 36297 2092 34 often often RB 36297 2092 35 be be VB 36297 2092 36 rewarded reward VBN 36297 2092 37 by by IN 36297 2092 38 the the DT 36297 2092 39 sight sight NN 36297 2092 40 of of IN 36297 2092 41 a a DT 36297 2092 42 mirage mirage NN 36297 2092 43 . . . 36297 2093 1 An an DT 36297 2093 2 approaching approaching JJ 36297 2093 3 pedestrian pedestrian NN 36297 2093 4 may may MD 36297 2093 5 have have VB 36297 2093 6 no no DT 36297 2093 7 feet foot NNS 36297 2093 8 ( ( -LRB- 36297 2093 9 they -PRON- PRP 36297 2093 10 are be VBP 36297 2093 11 replaced replace VBN 36297 2093 12 by by IN 36297 2093 13 a a DT 36297 2093 14 bit bit NN 36297 2093 15 of of IN 36297 2093 16 sky sky NN 36297 2093 17 ) ) -RRB- 36297 2093 18 and and CC 36297 2093 19 the the DT 36297 2093 20 distant distant JJ 36297 2093 21 pavement pavement NN 36297 2093 22 will will MD 36297 2093 23 appear appear VB 36297 2093 24 to to TO 36297 2093 25 contain contain VB 36297 2093 26 pools pool NNS 36297 2093 27 of of IN 36297 2093 28 water water NN 36297 2093 29 on on IN 36297 2093 30 its -PRON- PRP$ 36297 2093 31 surface surface NN 36297 2093 32 . . . 36297 2094 1 Sometimes sometimes RB 36297 2094 2 on on IN 36297 2094 3 deserts desert NNS 36297 2094 4 , , , 36297 2094 5 over over IN 36297 2094 6 ice ice NN 36297 2094 7 fields field NNS 36297 2094 8 , , , 36297 2094 9 or or CC 36297 2094 10 on on IN 36297 2094 11 northern northern JJ 36297 2094 12 seas sea NNS 36297 2094 13 , , , 36297 2094 14 mirages mirage NNS 36297 2094 15 are be VBP 36297 2094 16 of of IN 36297 2094 17 the the DT 36297 2094 18 inverted inverted JJ 36297 2094 19 type type NN 36297 2094 20 . . . 36297 2095 1 A a DT 36297 2095 2 horseman horseman NN 36297 2095 3 or or CC 36297 2095 4 ship ship NN 36297 2095 5 may may MD 36297 2095 6 appear appear VB 36297 2095 7 suspended suspend VBN 36297 2095 8 in in IN 36297 2095 9 the the DT 36297 2095 10 air air NN 36297 2095 11 in in IN 36297 2095 12 an an DT 36297 2095 13 inverted inverted JJ 36297 2095 14 position position NN 36297 2095 15 . . . 36297 2096 1 When when WRB 36297 2096 2 the the DT 36297 2096 3 density density NN 36297 2096 4 of of IN 36297 2096 5 the the DT 36297 2096 6 air air NN 36297 2096 7 is be VBZ 36297 2096 8 great great JJ 36297 2096 9 enough enough RB 36297 2096 10 so so IN 36297 2096 11 that that IN 36297 2096 12 only only RB 36297 2096 13 the the DT 36297 2096 14 upper upper JJ 36297 2096 15 rays ray NNS 36297 2096 16 reach reach VBP 36297 2096 17 the the DT 36297 2096 18 eye eye NN 36297 2096 19 , , , 36297 2096 20 the the DT 36297 2096 21 object object NN 36297 2096 22 will will MD 36297 2096 23 be be VB 36297 2096 24 seen see VBN 36297 2096 25 inverted inverted JJ 36297 2096 26 and and CC 36297 2096 27 far far RB 36297 2096 28 above above IN 36297 2096 29 the the DT 36297 2096 30 surface surface NN 36297 2096 31 upon upon IN 36297 2096 32 which which WDT 36297 2096 33 nothing nothing NN 36297 2096 34 is be VBZ 36297 2096 35 seen see VBN 36297 2096 36 . . . 36297 2097 1 Many many JJ 36297 2097 2 modifications modification NNS 36297 2097 3 of of IN 36297 2097 4 these these DT 36297 2097 5 types type NNS 36297 2097 6 are be VBP 36297 2097 7 possible possible JJ 36297 2097 8 through through IN 36297 2097 9 variations variation NNS 36297 2097 10 in in IN 36297 2097 11 the the DT 36297 2097 12 refractive refractive JJ 36297 2097 13 indices index NNS 36297 2097 14 of of IN 36297 2097 15 various various JJ 36297 2097 16 strata strata NN 36297 2097 17 of of IN 36297 2097 18 air air NN 36297 2097 19 . . . 36297 2098 1 Sometimes sometimes RB 36297 2098 2 the the DT 36297 2098 3 air air NN 36297 2098 4 is be VBZ 36297 2098 5 stratified stratified JJ 36297 2098 6 horizontally horizontally RB 36297 2098 7 and and CC 36297 2098 8 even even RB 36297 2098 9 vertically vertically RB 36297 2098 10 , , , 36297 2098 11 which which WDT 36297 2098 12 results result VBZ 36297 2098 13 in in IN 36297 2098 14 magnification magnification NN 36297 2098 15 as as RB 36297 2098 16 well well RB 36297 2098 17 as as IN 36297 2098 18 other other JJ 36297 2098 19 peculiar peculiar JJ 36297 2098 20 effects effect NNS 36297 2098 21 . . . 36297 2099 1 As as IN 36297 2099 2 one one CD 36297 2099 3 rides ride VBZ 36297 2099 4 over over IN 36297 2099 5 the the DT 36297 2099 6 desert desert NN 36297 2099 7 in in IN 36297 2099 8 a a DT 36297 2099 9 rapidly rapidly RB 36297 2099 10 moving move VBG 36297 2099 11 train train NN 36297 2099 12 or or CC 36297 2099 13 automobile automobile VB 36297 2099 14 these these DT 36297 2099 15 vagaries vagary NNS 36297 2099 16 of of IN 36297 2099 17 nature nature NN 36297 2099 18 are be VBP 36297 2099 19 sometimes sometimes RB 36297 2099 20 very very RB 36297 2099 21 striking striking JJ 36297 2099 22 , , , 36297 2099 23 because because IN 36297 2099 24 the the DT 36297 2099 25 speed speed NN 36297 2099 26 of of IN 36297 2099 27 motion motion NN 36297 2099 28 will will MD 36297 2099 29 make make VB 36297 2099 30 the the DT 36297 2099 31 effects effect NNS 36297 2099 32 of of IN 36297 2099 33 the the DT 36297 2099 34 varying varying NN 36297 2099 35 refractive refractive NN 36297 2099 36 indices indice VBZ 36297 2099 37 more more RBR 36297 2099 38 marked marked JJ 36297 2099 39 . . . 36297 2100 1 A a DT 36297 2100 2 distant distant JJ 36297 2100 3 foothill foothill NN 36297 2100 4 may may MD 36297 2100 5 appear appear VB 36297 2100 6 to to TO 36297 2100 7 float float VB 36297 2100 8 in in IN 36297 2100 9 the the DT 36297 2100 10 air air NN 36297 2100 11 or or CC 36297 2100 12 to to TO 36297 2100 13 change change VB 36297 2100 14 its -PRON- PRP$ 36297 2100 15 shape shape NN 36297 2100 16 very very RB 36297 2100 17 rapidly rapidly RB 36297 2100 18 . . . 36297 2101 1 An an DT 36297 2101 2 island island NN 36297 2101 3 surrounded surround VBN 36297 2101 4 by by IN 36297 2101 5 quiet quiet JJ 36297 2101 6 air air NN 36297 2101 7 and and CC 36297 2101 8 water water NN 36297 2101 9 may may MD 36297 2101 10 appear appear VB 36297 2101 11 like like IN 36297 2101 12 a a DT 36297 2101 13 huge huge JJ 36297 2101 14 mushroom mushroom NN 36297 2101 15 barely barely RB 36297 2101 16 supported support VBN 36297 2101 17 by by IN 36297 2101 18 a a DT 36297 2101 19 stem stem NN 36297 2101 20 . . . 36297 2102 1 Arctic arctic JJ 36297 2102 2 mirages mirage NNS 36297 2102 3 are be VBP 36297 2102 4 no no RB 36297 2102 5 less less RBR 36297 2102 6 wonderful wonderful JJ 36297 2102 7 than than IN 36297 2102 8 those those DT 36297 2102 9 of of IN 36297 2102 10 the the DT 36297 2102 11 hot hot JJ 36297 2102 12 barren barren JJ 36297 2102 13 deserts desert NNS 36297 2102 14 . . . 36297 2103 1 While while IN 36297 2103 2 traveling travel VBG 36297 2103 3 along along RB 36297 2103 4 over over IN 36297 2103 5 the the DT 36297 2103 6 ice ice NN 36297 2103 7 and and CC 36297 2103 8 snow snow VB 36297 2103 9 distant distant JJ 36297 2103 10 white white JJ 36297 2103 11 peaks peak NNS 36297 2103 12 may may MD 36297 2103 13 assume assume VB 36297 2103 14 the the DT 36297 2103 15 most most RBS 36297 2103 16 fantastic fantastic JJ 36297 2103 17 shapes shape NNS 36297 2103 18 . . . 36297 2104 1 At at IN 36297 2104 2 first first RB 36297 2104 3 they -PRON- PRP 36297 2104 4 may may MD 36297 2104 5 appear appear VB 36297 2104 6 flattened flatten VBN 36297 2104 7 like like IN 36297 2104 8 a a DT 36297 2104 9 table table NN 36297 2104 10 - - HYPH 36297 2104 11 land land NN 36297 2104 12 and and CC 36297 2104 13 then then RB 36297 2104 14 suddenly suddenly RB 36297 2104 15 they -PRON- PRP 36297 2104 16 may may MD 36297 2104 17 stretch stretch VB 36297 2104 18 upward upward RB 36297 2104 19 like like IN 36297 2104 20 spires spire NNS 36297 2104 21 . . . 36297 2105 1 They -PRON- PRP 36297 2105 2 may may MD 36297 2105 3 shrink shrink VB 36297 2105 4 then then RB 36297 2105 5 spread spread VB 36297 2105 6 like like IN 36297 2105 7 huge huge JJ 36297 2105 8 mushrooms mushroom NNS 36297 2105 9 supported support VBN 36297 2105 10 by by IN 36297 2105 11 the the DT 36297 2105 12 stalk stalk NN 36297 2105 13 - - HYPH 36297 2105 14 like like JJ 36297 2105 15 bases basis NNS 36297 2105 16 and and CC 36297 2105 17 stretching stretch VBG 36297 2105 18 out out RP 36297 2105 19 laterally laterally RB 36297 2105 20 . . . 36297 2106 1 Suddenly suddenly RB 36297 2106 2 they -PRON- PRP 36297 2106 3 may may MD 36297 2106 4 shoot shoot VB 36297 2106 5 upward upward RB 36297 2106 6 into into IN 36297 2106 7 another another DT 36297 2106 8 series series NN 36297 2106 9 of of IN 36297 2106 10 pinnacles pinnacle NNS 36297 2106 11 as as IN 36297 2106 12 if if IN 36297 2106 13 another another DT 36297 2106 14 range range NN 36297 2106 15 had have VBD 36297 2106 16 suddenly suddenly RB 36297 2106 17 arisen arise VBN 36297 2106 18 . . . 36297 2107 1 Such such JJ 36297 2107 2 antics antic NNS 36297 2107 3 may may MD 36297 2107 4 go go VB 36297 2107 5 on on RP 36297 2107 6 for for IN 36297 2107 7 hours hour NNS 36297 2107 8 as as IN 36297 2107 9 one one CD 36297 2107 10 travels travel VBZ 36297 2107 11 along along IN 36297 2107 12 a a DT 36297 2107 13 frozen frozen JJ 36297 2107 14 valley valley NN 36297 2107 15 . . . 36297 2108 1 Even even RB 36297 2108 2 a a DT 36297 2108 3 change change NN 36297 2108 4 of of IN 36297 2108 5 position position NN 36297 2108 6 of of IN 36297 2108 7 the the DT 36297 2108 8 eyes eye NNS 36297 2108 9 accompanying accompany VBG 36297 2108 10 a a DT 36297 2108 11 change change NN 36297 2108 12 from from IN 36297 2108 13 erect erect NN 36297 2108 14 to to IN 36297 2108 15 lying lie VBG 36297 2108 16 down down RP 36297 2108 17 may may MD 36297 2108 18 cause cause VB 36297 2108 19 remarkable remarkable JJ 36297 2108 20 contortions contortion NNS 36297 2108 21 of of IN 36297 2108 22 the the DT 36297 2108 23 distant distant JJ 36297 2108 24 mountains mountain NNS 36297 2108 25 and and CC 36297 2108 26 one one CD 36297 2108 27 is be VBZ 36297 2108 28 reminded remind VBN 36297 2108 29 of of IN 36297 2108 30 the the DT 36297 2108 31 psalmist psalmist NN 36297 2108 32 's 's POS 36297 2108 33 query query NN 36297 2108 34 , , , 36297 2108 35 " " `` 36297 2108 36 Why why WRB 36297 2108 37 hop hop UH 36297 2108 38 ye ye NNP 36297 2108 39 so so RB 36297 2108 40 , , , 36297 2108 41 ye ye NNP 36297 2108 42 hills hills NNP 36297 2108 43 ? ? . 36297 2108 44 " " '' 36297 2109 1 Although although IN 36297 2109 2 not not RB 36297 2109 3 an an DT 36297 2109 4 illusion illusion NN 36297 2109 5 but but CC 36297 2109 6 a a DT 36297 2109 7 physical physical JJ 36297 2109 8 reality reality NN 36297 2109 9 , , , 36297 2109 10 it -PRON- PRP 36297 2109 11 is be VBZ 36297 2109 12 of of IN 36297 2109 13 interest interest NN 36297 2109 14 in in IN 36297 2109 15 passing pass VBG 36297 2109 16 to to TO 36297 2109 17 note note VB 36297 2109 18 the the DT 36297 2109 19 colored color VBN 36297 2109 20 halo halo NNS 36297 2109 21 or or CC 36297 2109 22 aureole aureole RB 36297 2109 23 surrounding surround VBG 36297 2109 24 the the DT 36297 2109 25 shadows shadow NNS 36297 2109 26 of of IN 36297 2109 27 objects object NNS 36297 2109 28 cast cast VBN 36297 2109 29 by by IN 36297 2109 30 the the DT 36297 2109 31 sun sun NN 36297 2109 32 against against IN 36297 2109 33 a a DT 36297 2109 34 cloud cloud NN 36297 2109 35 , , , 36297 2109 36 fog fog NN 36297 2109 37 , , , 36297 2109 38 or or CC 36297 2109 39 jet jet NN 36297 2109 40 of of IN 36297 2109 41 steam steam NN 36297 2109 42 . . . 36297 2110 1 The the DT 36297 2110 2 most most RBS 36297 2110 3 wonderful wonderful JJ 36297 2110 4 effects effect NNS 36297 2110 5 are be VBP 36297 2110 6 seen see VBN 36297 2110 7 by by IN 36297 2110 8 the the DT 36297 2110 9 aerial aerial JJ 36297 2110 10 traveler traveler NN 36297 2110 11 over over IN 36297 2110 12 a a DT 36297 2110 13 bank bank NN 36297 2110 14 of of IN 36297 2110 15 clouds cloud NNS 36297 2110 16 when when WRB 36297 2110 17 the the DT 36297 2110 18 upper upper JJ 36297 2110 19 sky sky NN 36297 2110 20 is be VBZ 36297 2110 21 clear clear JJ 36297 2110 22 . . . 36297 2111 1 For for IN 36297 2111 2 example example NN 36297 2111 3 , , , 36297 2111 4 the the DT 36297 2111 5 shadow shadow NN 36297 2111 6 of of IN 36297 2111 7 the the DT 36297 2111 8 aircraft aircraft NN 36297 2111 9 cast cast VBN 36297 2111 10 by by IN 36297 2111 11 the the DT 36297 2111 12 sun sun NN 36297 2111 13 upon upon IN 36297 2111 14 a a DT 36297 2111 15 dense dense JJ 36297 2111 16 layer layer NN 36297 2111 17 of of IN 36297 2111 18 clouds cloud NNS 36297 2111 19 is be VBZ 36297 2111 20 surrounded surround VBN 36297 2111 21 by by IN 36297 2111 22 a a DT 36297 2111 23 halo halo NN 36297 2111 24 or or CC 36297 2111 25 aureole aureole NN 36297 2111 26 of of IN 36297 2111 27 the the DT 36297 2111 28 colors color NNS 36297 2111 29 of of IN 36297 2111 30 the the DT 36297 2111 31 rainbow rainbow NN 36297 2111 32 . . . 36297 2112 1 The the DT 36297 2112 2 phenomenon phenomenon NN 36297 2112 3 is be VBZ 36297 2112 4 purely purely RB 36297 2112 5 optical optical JJ 36297 2112 6 , , , 36297 2112 7 involving involve VBG 36297 2112 8 diffraction diffraction NN 36297 2112 9 of of IN 36297 2112 10 light light NN 36297 2112 11 . . . 36297 2113 1 A a DT 36297 2113 2 well well RB 36297 2113 3 - - HYPH 36297 2113 4 known know VBN 36297 2113 5 example example NN 36297 2113 6 of of IN 36297 2113 7 this this DT 36297 2113 8 is be VBZ 36297 2113 9 the the DT 36297 2113 10 " " `` 36297 2113 11 Spectre Spectre NNP 36297 2113 12 of of IN 36297 2113 13 the the DT 36297 2113 14 Brocken Brocken NNP 36297 2113 15 . . . 36297 2113 16 " " '' 36297 2114 1 XII xii NN 36297 2114 2 PAINTING painting NN 36297 2114 3 AND and CC 36297 2114 4 DECORATION decoration NN 36297 2114 5 In in IN 36297 2114 6 the the DT 36297 2114 7 arts art NNS 36297 2114 8 where where WRB 36297 2114 9 colors color NNS 36297 2114 10 , , , 36297 2114 11 brightnesses brightness NNS 36297 2114 12 , , , 36297 2114 13 contrasts contrast NNS 36297 2114 14 , , , 36297 2114 15 lines line NNS 36297 2114 16 , , , 36297 2114 17 forms form NNS 36297 2114 18 , , , 36297 2114 19 and and CC 36297 2114 20 perspectives perspective VBZ 36297 2114 21 mean mean VBP 36297 2114 22 so so RB 36297 2114 23 much much RB 36297 2114 24 , , , 36297 2114 25 it -PRON- PRP 36297 2114 26 is be VBZ 36297 2114 27 obvious obvious JJ 36297 2114 28 that that IN 36297 2114 29 visual visual JJ 36297 2114 30 illusions illusion NNS 36297 2114 31 are be VBP 36297 2114 32 important important JJ 36297 2114 33 . . . 36297 2115 1 Sometimes sometimes RB 36297 2115 2 they -PRON- PRP 36297 2115 3 are be VBP 36297 2115 4 evils evil NNS 36297 2115 5 which which WDT 36297 2115 6 must must MD 36297 2115 7 be be VB 36297 2115 8 suppressed suppress VBN 36297 2115 9 ; ; : 36297 2115 10 in in IN 36297 2115 11 some some DT 36297 2115 12 cases case NNS 36297 2115 13 they -PRON- PRP 36297 2115 14 are be VBP 36297 2115 15 boons boon NNS 36297 2115 16 to to IN 36297 2115 17 the the DT 36297 2115 18 artist artist NN 36297 2115 19 if if IN 36297 2115 20 he -PRON- PRP 36297 2115 21 is be VBZ 36297 2115 22 equal equal JJ 36297 2115 23 to to IN 36297 2115 24 the the DT 36297 2115 25 task task NN 36297 2115 26 of of IN 36297 2115 27 harnessing harness VBG 36297 2115 28 them -PRON- PRP 36297 2115 29 . . . 36297 2116 1 Ofttimes Ofttimes NNP 36297 2116 2 they -PRON- PRP 36297 2116 3 appear appear VBP 36297 2116 4 unheralded unheralded JJ 36297 2116 5 and and CC 36297 2116 6 unexpected unexpected JJ 36297 2116 7 . . . 36297 2117 1 The the DT 36297 2117 2 existence existence NN 36297 2117 3 of of IN 36297 2117 4 visual visual JJ 36297 2117 5 illusions illusion NNS 36297 2117 6 is be VBZ 36297 2117 7 sufficient sufficient JJ 36297 2117 8 to to TO 36297 2117 9 justify justify VB 36297 2117 10 the the DT 36297 2117 11 artist artist NN 36297 2117 12 's 's POS 36297 2117 13 pride pride NN 36297 2117 14 in in IN 36297 2117 15 his -PRON- PRP$ 36297 2117 16 " " `` 36297 2117 17 eye eye NN 36297 2117 18 " " '' 36297 2117 19 and and CC 36297 2117 20 his -PRON- PRP$ 36297 2117 21 dependence dependence NN 36297 2117 22 upon upon IN 36297 2117 23 his -PRON- PRP$ 36297 2117 24 visual visual JJ 36297 2117 25 judgment judgment NN 36297 2117 26 rather rather RB 36297 2117 27 than than IN 36297 2117 28 upon upon IN 36297 2117 29 what what WP 36297 2117 30 he -PRON- PRP 36297 2117 31 knows know VBZ 36297 2117 32 to to TO 36297 2117 33 be be VB 36297 2117 34 true true JJ 36297 2117 35 . . . 36297 2118 1 However however WRB 36297 2118 2 true true JJ 36297 2118 3 this this DT 36297 2118 4 may may MD 36297 2118 5 be be VB 36297 2118 6 , , , 36297 2118 7 knowledge knowledge NN 36297 2118 8 is be VBZ 36297 2118 9 as as RB 36297 2118 10 useful useful JJ 36297 2118 11 to to IN 36297 2118 12 the the DT 36297 2118 13 artist artist NN 36297 2118 14 as as IN 36297 2118 15 to to IN 36297 2118 16 anyone anyone NN 36297 2118 17 else else RB 36297 2118 18 . . . 36297 2119 1 The the DT 36297 2119 2 artist artist NN 36297 2119 3 , , , 36297 2119 4 if if IN 36297 2119 5 he -PRON- PRP 36297 2119 6 is be VBZ 36297 2119 7 to to TO 36297 2119 8 produce produce VB 36297 2119 9 art art NN 36297 2119 10 , , , 36297 2119 11 is be VBZ 36297 2119 12 confronted confront VBN 36297 2119 13 with with IN 36297 2119 14 the the DT 36297 2119 15 tremendous tremendous JJ 36297 2119 16 task task NN 36297 2119 17 of of IN 36297 2119 18 perfecting perfect VBG 36297 2119 19 an an DT 36297 2119 20 imperfect imperfect JJ 36297 2119 21 nature nature NN 36297 2119 22 and and CC 36297 2119 23 he -PRON- PRP 36297 2119 24 is be VBZ 36297 2119 25 handicapped handicapped JJ 36297 2119 26 with with IN 36297 2119 27 tools tool NNS 36297 2119 28 inferior inferior JJ 36297 2119 29 to to IN 36297 2119 30 those those DT 36297 2119 31 which which WDT 36297 2119 32 nature nature NN 36297 2119 33 has have VBZ 36297 2119 34 at at IN 36297 2119 35 her -PRON- PRP$ 36297 2119 36 disposal disposal NN 36297 2119 37 . . . 36297 2120 1 He -PRON- PRP 36297 2120 2 must must MD 36297 2120 3 deal deal VB 36297 2120 4 with with IN 36297 2120 5 reflected reflect VBN 36297 2120 6 lights light NNS 36297 2120 7 from from IN 36297 2120 8 earthly earthly JJ 36297 2120 9 materials material NNS 36297 2120 10 . . . 36297 2121 1 Nature nature NN 36297 2121 2 has have VBZ 36297 2121 3 these these DT 36297 2121 4 besides besides IN 36297 2121 5 the the DT 36297 2121 6 great great JJ 36297 2121 7 primary primary JJ 36297 2121 8 light light NN 36297 2121 9 - - HYPH 36297 2121 10 sources source NNS 36297 2121 11 -- -- : 36297 2121 12 the the DT 36297 2121 13 sun sun NN 36297 2121 14 , , , 36297 2121 15 the the DT 36297 2121 16 moon moon NN 36297 2121 17 , , , 36297 2121 18 the the DT 36297 2121 19 stars star NNS 36297 2121 20 , , , 36297 2121 21 and and CC 36297 2121 22 , , , 36297 2121 23 we -PRON- PRP 36297 2121 24 might may MD 36297 2121 25 say say VB 36297 2121 26 , , , 36297 2121 27 the the DT 36297 2121 28 sky sky NN 36297 2121 29 . . . 36297 2122 1 She -PRON- PRP 36297 2122 2 also also RB 36297 2122 3 has have VBZ 36297 2122 4 the the DT 36297 2122 5 advantage advantage NN 36297 2122 6 of of IN 36297 2122 7 overwhelming overwhelming JJ 36297 2122 8 magnitudes magnitude NNS 36297 2122 9 . . . 36297 2123 1 These these DT 36297 2123 2 are be VBP 36297 2123 3 only only RB 36297 2123 4 a a DT 36297 2123 5 few few JJ 36297 2123 6 of of IN 36297 2123 7 the the DT 36297 2123 8 disadvantages disadvantage NNS 36297 2123 9 under under IN 36297 2123 10 which which WDT 36297 2123 11 the the DT 36297 2123 12 artist artist NN 36297 2123 13 works work VBZ 36297 2123 14 , , , 36297 2123 15 but but CC 36297 2123 16 they -PRON- PRP 36297 2123 17 indicate indicate VBP 36297 2123 18 that that IN 36297 2123 19 he -PRON- PRP 36297 2123 20 must must MD 36297 2123 21 grasp grasp VB 36297 2123 22 any any DT 36297 2123 23 advantage advantage NN 36297 2123 24 here here RB 36297 2123 25 and and CC 36297 2123 26 there there RB 36297 2123 27 which which WDT 36297 2123 28 he -PRON- PRP 36297 2123 29 may may MD 36297 2123 30 . . . 36297 2124 1 Knowledge knowledge NN 36297 2124 2 can can MD 36297 2124 3 not not RB 36297 2124 4 fail fail VB 36297 2124 5 him -PRON- PRP 36297 2124 6 ; ; : 36297 2124 7 still still RB 36297 2124 8 , , , 36297 2124 9 if if IN 36297 2124 10 he -PRON- PRP 36297 2124 11 fears fear VBZ 36297 2124 12 that that IN 36297 2124 13 it -PRON- PRP 36297 2124 14 will will MD 36297 2124 15 take take VB 36297 2124 16 him -PRON- PRP 36297 2124 17 out out IN 36297 2124 18 of of IN 36297 2124 19 his -PRON- PRP$ 36297 2124 20 " " `` 36297 2124 21 dream dream NN 36297 2124 22 world world NN 36297 2124 23 " " '' 36297 2124 24 and and CC 36297 2124 25 taint taint VB 36297 2124 26 him -PRON- PRP 36297 2124 27 with with IN 36297 2124 28 earthliness earthliness NN 36297 2124 29 , , , 36297 2124 30 let let VB 36297 2124 31 him -PRON- PRP 36297 2124 32 ponder ponder VB 36297 2124 33 over over IN 36297 2124 34 da da NNP 36297 2124 35 Vinci Vinci NNP 36297 2124 36 , , , 36297 2124 37 Rembrandt Rembrandt NNP 36297 2124 38 , , , 36297 2124 39 and and CC 36297 2124 40 such such JJ 36297 2124 41 men man NNS 36297 2124 42 . . . 36297 2125 1 These these DT 36297 2125 2 men man NNS 36297 2125 3 _ _ NNP 36297 2125 4 knew know VBD 36297 2125 5 _ _ NNP 36297 2125 6 many many JJ 36297 2125 7 things thing NNS 36297 2125 8 . . . 36297 2126 1 They -PRON- PRP 36297 2126 2 possessed possess VBD 36297 2126 3 much much JJ 36297 2126 4 knowledge knowledge NN 36297 2126 5 and and CC 36297 2126 6 , , , 36297 2126 7 after after RB 36297 2126 8 all all RB 36297 2126 9 , , , 36297 2126 10 the the DT 36297 2126 11 latter latter JJ 36297 2126 12 is be VBZ 36297 2126 13 nothing nothing NN 36297 2126 14 more more JJR 36297 2126 15 nor nor CC 36297 2126 16 less less JJR 36297 2126 17 than than IN 36297 2126 18 science science NN 36297 2126 19 when when WRB 36297 2126 20 its -PRON- PRP$ 36297 2126 21 facts fact NNS 36297 2126 22 are be VBP 36297 2126 23 arranged arrange VBN 36297 2126 24 in in IN 36297 2126 25 an an DT 36297 2126 26 orderly orderly JJ 36297 2126 27 manner manner NN 36297 2126 28 . . . 36297 2127 1 If if IN 36297 2127 2 the the DT 36297 2127 3 arts art NNS 36297 2127 4 are be VBP 36297 2127 5 to to TO 36297 2127 6 speak speak VB 36297 2127 7 " " `` 36297 2127 8 a a DT 36297 2127 9 noble noble JJ 36297 2127 10 and and CC 36297 2127 11 expressive expressive JJ 36297 2127 12 language language NN 36297 2127 13 " " '' 36297 2127 14 despite despite IN 36297 2127 15 the the DT 36297 2127 16 handicaps handicap NNS 36297 2127 17 of of IN 36297 2127 18 the the DT 36297 2127 19 artist artist NN 36297 2127 20 , , , 36297 2127 21 knowledge knowledge NN 36297 2127 22 can can MD 36297 2127 23 not not RB 36297 2127 24 be be VB 36297 2127 25 drawn draw VBN 36297 2127 26 upon upon IN 36297 2127 27 too too RB 36297 2127 28 deeply deeply RB 36297 2127 29 . . . 36297 2128 1 Perhaps perhaps RB 36297 2128 2 in in IN 36297 2128 3 no no DT 36297 2128 4 other other JJ 36297 2128 5 art art NN 36297 2128 6 are be VBP 36297 2128 7 the the DT 36297 2128 8 workmen workman NNS 36297 2128 9 as as IN 36297 2128 10 little little JJ 36297 2128 11 acquainted acquaint VBN 36297 2128 12 with with IN 36297 2128 13 their -PRON- PRP$ 36297 2128 14 handicaps handicap NNS 36297 2128 15 and and CC 36297 2128 16 with with IN 36297 2128 17 the the DT 36297 2128 18 scientific scientific JJ 36297 2128 19 facts fact NNS 36297 2128 20 which which WDT 36297 2128 21 would would MD 36297 2128 22 aid aid VB 36297 2128 23 them -PRON- PRP 36297 2128 24 as as IN 36297 2128 25 in in IN 36297 2128 26 painting painting NN 36297 2128 27 . . . 36297 2129 1 Painters painter NNS 36297 2129 2 , , , 36297 2129 3 of of IN 36297 2129 4 course course NN 36297 2129 5 , , , 36297 2129 6 may may MD 36297 2129 7 not not RB 36297 2129 8 agree agree VB 36297 2129 9 as as IN 36297 2129 10 to to IN 36297 2129 11 this this DT 36297 2129 12 statement statement NN 36297 2129 13 , , , 36297 2129 14 but but CC 36297 2129 15 if if IN 36297 2129 16 they -PRON- PRP 36297 2129 17 wish wish VBP 36297 2129 18 to to TO 36297 2129 19 see see VB 36297 2129 20 how how WRB 36297 2129 21 much much JJ 36297 2129 22 of of IN 36297 2129 23 the the DT 36297 2129 24 science science NN 36297 2129 25 of of IN 36297 2129 26 light light NN 36297 2129 27 , , , 36297 2129 28 color color NN 36297 2129 29 , , , 36297 2129 30 lighting lighting NN 36297 2129 31 , , , 36297 2129 32 and and CC 36297 2129 33 vision vision NN 36297 2129 34 they -PRON- PRP 36297 2129 35 are be VBP 36297 2129 36 unacquainted unacquainte VBN 36297 2129 37 with with IN 36297 2129 38 , , , 36297 2129 39 let let VB 36297 2129 40 them -PRON- PRP 36297 2129 41 invade invade VB 36297 2129 42 the the DT 36297 2129 43 book book NN 36297 2129 44 - - HYPH 36297 2129 45 shelves shelf NNS 36297 2129 46 . . . 36297 2130 1 If if IN 36297 2130 2 they -PRON- PRP 36297 2130 3 think think VBP 36297 2130 4 they -PRON- PRP 36297 2130 5 know know VBP 36297 2130 6 the the DT 36297 2130 7 facts fact NNS 36297 2130 8 of of IN 36297 2130 9 nature nature NN 36297 2130 10 let let VBD 36297 2130 11 them -PRON- PRP 36297 2130 12 paint paint VB 36297 2130 13 a a DT 36297 2130 14 given give VBN 36297 2130 15 scene scene NN 36297 2130 16 and and CC 36297 2130 17 then then RB 36297 2130 18 inquire inquire RB 36297 2130 19 of of IN 36297 2130 20 the the DT 36297 2130 21 scientist scientist NN 36297 2130 22 regarding regard VBG 36297 2130 23 the the DT 36297 2130 24 relative relative JJ 36297 2130 25 values value NNS 36297 2130 26 ( ( -LRB- 36297 2130 27 brightnesses brightness NNS 36297 2130 28 ) ) -RRB- 36297 2130 29 in in IN 36297 2130 30 the the DT 36297 2130 31 actual actual JJ 36297 2130 32 scene scene NN 36297 2130 33 . . . 36297 2131 1 They -PRON- PRP 36297 2131 2 will will MD 36297 2131 3 usually usually RB 36297 2131 4 be be VB 36297 2131 5 amazed amazed JJ 36297 2131 6 to to TO 36297 2131 7 learn learn VB 36297 2131 8 that that IN 36297 2131 9 they -PRON- PRP 36297 2131 10 can can MD 36297 2131 11 not not RB 36297 2131 12 paint paint VB 36297 2131 13 the the DT 36297 2131 14 lights light NNS 36297 2131 15 and and CC 36297 2131 16 shadows shadow NNS 36297 2131 17 of of IN 36297 2131 18 nature nature NN 36297 2131 19 excepting except VBG 36297 2131 20 in in IN 36297 2131 21 the the DT 36297 2131 22 feeblest feeblest JJ 36297 2131 23 manner manner NN 36297 2131 24 . . . 36297 2132 1 The the DT 36297 2132 2 range range NN 36297 2132 3 of of IN 36297 2132 4 contrast contrast NN 36297 2132 5 represented represent VBN 36297 2132 6 by by IN 36297 2132 7 their -PRON- PRP$ 36297 2132 8 entire entire JJ 36297 2132 9 palette palette NN 36297 2132 10 is be VBZ 36297 2132 11 many many JJ 36297 2132 12 thousand thousand CD 36297 2132 13 times time NNS 36297 2132 14 less less JJR 36297 2132 15 than than IN 36297 2132 16 the the DT 36297 2132 17 range range NN 36297 2132 18 of of IN 36297 2132 19 values value NNS 36297 2132 20 in in IN 36297 2132 21 nature nature NN 36297 2132 22 . . . 36297 2133 1 In in IN 36297 2133 2 fact fact NN 36297 2133 3 exclusive exclusive JJ 36297 2133 4 of of IN 36297 2133 5 nature nature NN 36297 2133 6 's 's POS 36297 2133 7 primary primary JJ 36297 2133 8 light light NN 36297 2133 9 - - HYPH 36297 2133 10 sources source NNS 36297 2133 11 , , , 36297 2133 12 such such JJ 36297 2133 13 as as IN 36297 2133 14 the the DT 36297 2133 15 sun sun NN 36297 2133 16 , , , 36297 2133 17 she -PRON- PRP 36297 2133 18 sometimes sometimes RB 36297 2133 19 exhibits exhibit VBZ 36297 2133 20 a a DT 36297 2133 21 range range NN 36297 2133 22 of of IN 36297 2133 23 brightness brightness NN 36297 2133 24 in in IN 36297 2133 25 a a DT 36297 2133 26 landscape landscape NN 36297 2133 27 a a DT 36297 2133 28 million million CD 36297 2133 29 times time NNS 36297 2133 30 greater great JJR 36297 2133 31 than than IN 36297 2133 32 the the DT 36297 2133 33 painter painter NN 36297 2133 34 can can MD 36297 2133 35 produce produce VB 36297 2133 36 with with IN 36297 2133 37 black black JJ 36297 2133 38 and and CC 36297 2133 39 white white JJ 36297 2133 40 pigments pigment NNS 36297 2133 41 . . . 36297 2134 1 This this DT 36297 2134 2 suggests suggest VBZ 36297 2134 3 that that IN 36297 2134 4 the the DT 36297 2134 5 artist artist NN 36297 2134 6 is be VBZ 36297 2134 7 justified justify VBN 36297 2134 8 in in IN 36297 2134 9 using use VBG 36297 2134 10 any any DT 36297 2134 11 available available JJ 36297 2134 12 means mean NNS 36297 2134 13 for for IN 36297 2134 14 overcoming overcome VBG 36297 2134 15 the the DT 36297 2134 16 handicap handicap NN 36297 2134 17 and and CC 36297 2134 18 among among IN 36297 2134 19 his -PRON- PRP$ 36297 2134 20 tools tool NNS 36297 2134 21 , , , 36297 2134 22 visual visual JJ 36297 2134 23 illusions illusion NNS 36297 2134 24 are be VBP 36297 2134 25 perhaps perhaps RB 36297 2134 26 the the DT 36297 2134 27 most most RBS 36297 2134 28 powerful powerful JJ 36297 2134 29 . . . 36297 2135 1 A a DT 36297 2135 2 painting painting NN 36297 2135 3 in in IN 36297 2135 4 the the DT 36297 2135 5 broadest broad JJS 36297 2135 6 sense sense NN 36297 2135 7 is be VBZ 36297 2135 8 an an DT 36297 2135 9 illusion illusion NN 36297 2135 10 , , , 36297 2135 11 for for IN 36297 2135 12 it -PRON- PRP 36297 2135 13 strives strive VBZ 36297 2135 14 to to TO 36297 2135 15 present present VB 36297 2135 16 the the DT 36297 2135 17 three three CD 36297 2135 18 - - HYPH 36297 2135 19 dimensional dimensional JJ 36297 2135 20 world world NN 36297 2135 21 upon upon IN 36297 2135 22 plane plane NN 36297 2135 23 areas area NNS 36297 2135 24 of of IN 36297 2135 25 two two CD 36297 2135 26 dimensions dimension NNS 36297 2135 27 . . . 36297 2136 1 Through through IN 36297 2136 2 representation representation NN 36297 2136 3 or or CC 36297 2136 4 imitation imitation NN 36297 2136 5 it -PRON- PRP 36297 2136 6 creates create VBZ 36297 2136 7 an an DT 36297 2136 8 illusion illusion NN 36297 2136 9 . . . 36297 2137 1 If if IN 36297 2137 2 the the DT 36297 2137 3 artist artist NN 36297 2137 4 's 's POS 36297 2137 5 sensibility sensibility NN 36297 2137 6 has have VBZ 36297 2137 7 been be VBN 36297 2137 8 capable capable JJ 36297 2137 9 of of IN 36297 2137 10 adequate adequate JJ 36297 2137 11 selection selection NN 36297 2137 12 , , , 36297 2137 13 his -PRON- PRP$ 36297 2137 14 art art NN 36297 2137 15 will will MD 36297 2137 16 transmit transmit VB 36297 2137 17 , , , 36297 2137 18 by by IN 36297 2137 19 means mean NNS 36297 2137 20 of of IN 36297 2137 21 and and CC 36297 2137 22 through through IN 36297 2137 23 the the DT 36297 2137 24 truths truth NNS 36297 2137 25 of of IN 36297 2137 26 science science NN 36297 2137 27 , , , 36297 2137 28 from from IN 36297 2137 29 the the DT 36297 2137 30 region region NN 36297 2137 31 of of IN 36297 2137 32 perception perception NN 36297 2137 33 to to IN 36297 2137 34 the the DT 36297 2137 35 region region NN 36297 2137 36 of of IN 36297 2137 37 emotion emotion NN 36297 2137 38 . . . 36297 2138 1 Science science NN 36297 2138 2 consists consist VBZ 36297 2138 3 of of IN 36297 2138 4 knowing know VBG 36297 2138 5 ; ; : 36297 2138 6 art art NN 36297 2138 7 consists consist VBZ 36297 2138 8 of of IN 36297 2138 9 doing do VBG 36297 2138 10 . . . 36297 2139 1 If if IN 36297 2139 2 the the DT 36297 2139 3 artist artist NN 36297 2139 4 is be VBZ 36297 2139 5 familiar familiar JJ 36297 2139 6 with with IN 36297 2139 7 the the DT 36297 2139 8 facts fact NNS 36297 2139 9 of of IN 36297 2139 10 light light NN 36297 2139 11 , , , 36297 2139 12 color color NN 36297 2139 13 , , , 36297 2139 14 lighting lighting NN 36297 2139 15 , , , 36297 2139 16 and and CC 36297 2139 17 vision vision NN 36297 2139 18 , , , 36297 2139 19 he -PRON- PRP 36297 2139 20 will will MD 36297 2139 21 possess possess VB 36297 2139 22 knowledge knowledge NN 36297 2139 23 that that WDT 36297 2139 24 can can MD 36297 2139 25 aid aid VB 36297 2139 26 him -PRON- PRP 36297 2139 27 in in IN 36297 2139 28 overcoming overcome VBG 36297 2139 29 the the DT 36297 2139 30 great great JJ 36297 2139 31 obstacles obstacle NNS 36297 2139 32 which which WDT 36297 2139 33 are be VBP 36297 2139 34 ever ever RB 36297 2139 35 - - HYPH 36297 2139 36 present present JJ 36297 2139 37 . . . 36297 2140 1 A a DT 36297 2140 2 glimpse glimpse NN 36297 2140 3 of of IN 36297 2140 4 visual visual JJ 36297 2140 5 illusions illusion NNS 36297 2140 6 should should MD 36297 2140 7 strengthen strengthen VB 36297 2140 8 him -PRON- PRP 36297 2140 9 in in IN 36297 2140 10 his -PRON- PRP$ 36297 2140 11 resolution resolution NN 36297 2140 12 to to TO 36297 2140 13 depend depend VB 36297 2140 14 upon upon IN 36297 2140 15 visual visual JJ 36297 2140 16 perception perception NN 36297 2140 17 , , , 36297 2140 18 but but CC 36297 2140 19 he -PRON- PRP 36297 2140 20 can can MD 36297 2140 21 utilize utilize VB 36297 2140 22 these these DT 36297 2140 23 very very JJ 36297 2140 24 illusions illusion NNS 36297 2140 25 . . . 36297 2141 1 He -PRON- PRP 36297 2141 2 can can MD 36297 2141 3 find find VB 36297 2141 4 a a DT 36297 2141 5 use use NN 36297 2141 6 for for IN 36297 2141 7 facts fact NNS 36297 2141 8 as as RB 36297 2141 9 well well RB 36297 2141 10 as as IN 36297 2141 11 anyone anyone NN 36297 2141 12 . . . 36297 2142 1 Facts fact NNS 36297 2142 2 as as RB 36297 2142 3 well well RB 36297 2142 4 as as IN 36297 2142 5 experience experience NN 36297 2142 6 will will MD 36297 2142 7 prepare prepare VB 36297 2142 8 him -PRON- PRP 36297 2142 9 to to TO 36297 2142 10 do do VB 36297 2142 11 his -PRON- PRP$ 36297 2142 12 work work NN 36297 2142 13 best well RBS 36297 2142 14 . . . 36297 2143 1 The the DT 36297 2143 2 artist artist NN 36297 2143 3 may may MD 36297 2143 4 suggest suggest VB 36297 2143 5 brilliant brilliant JJ 36297 2143 6 sunlight sunlight NN 36297 2143 7 by by IN 36297 2143 8 means mean NNS 36297 2143 9 of of IN 36297 2143 10 deep deep JJ 36297 2143 11 shadow shadow NN 36297 2143 12 . . . 36297 2144 1 The the DT 36297 2144 2 old old JJ 36297 2144 3 painters painter NNS 36297 2144 4 gained gain VBD 36297 2144 5 color color NN 36297 2144 6 at at IN 36297 2144 7 the the DT 36297 2144 8 expense expense NN 36297 2144 9 of of IN 36297 2144 10 light light NN 36297 2144 11 and and CC 36297 2144 12 therefore therefore RB 36297 2144 13 lowered lower VBD 36297 2144 14 the the DT 36297 2144 15 scale scale NN 36297 2144 16 of of IN 36297 2144 17 color color NN 36297 2144 18 in in IN 36297 2144 19 their -PRON- PRP$ 36297 2144 20 representations representation NNS 36297 2144 21 of of IN 36297 2144 22 nature nature NN 36297 2144 23 . . . 36297 2145 1 It -PRON- PRP 36297 2145 2 is be VBZ 36297 2145 3 interesting interesting JJ 36297 2145 4 to to TO 36297 2145 5 see see VB 36297 2145 6 how how WRB 36297 2145 7 increasing increase VBG 36297 2145 8 knowledge knowledge NN 36297 2145 9 , , , 36297 2145 10 as as IN 36297 2145 11 centuries century NNS 36297 2145 12 passed pass VBD 36297 2145 13 , , , 36297 2145 14 directed direct VBN 36297 2145 15 painters painter NNS 36297 2145 16 as as IN 36297 2145 17 it -PRON- PRP 36297 2145 18 did do VBD 36297 2145 19 others other NNS 36297 2145 20 onward onward RB 36297 2145 21 toward toward IN 36297 2145 22 the the DT 36297 2145 23 truth truth NN 36297 2145 24 . . . 36297 2146 1 Turner Turner NNP 36297 2146 2 was be VBD 36297 2146 3 one one CD 36297 2146 4 of of IN 36297 2146 5 the the DT 36297 2146 6 first first JJ 36297 2146 7 to to TO 36297 2146 8 abandon abandon VB 36297 2146 9 the the DT 36297 2146 10 older old JJR 36297 2146 11 methods method NNS 36297 2146 12 in in IN 36297 2146 13 an an DT 36297 2146 14 attempt attempt NN 36297 2146 15 to to TO 36297 2146 16 raise raise VB 36297 2146 17 the the DT 36297 2146 18 scale scale NN 36297 2146 19 of of IN 36297 2146 20 his -PRON- PRP$ 36297 2146 21 paintings painting NNS 36297 2146 22 toward toward IN 36297 2146 23 a a DT 36297 2146 24 brilliance brilliance NN 36297 2146 25 more more JJR 36297 2146 26 resembling resemble VBG 36297 2146 27 nature nature NN 36297 2146 28 . . . 36297 2147 1 By by IN 36297 2147 2 doing do VBG 36297 2147 3 this this DT 36297 2147 4 he -PRON- PRP 36297 2147 5 was be VBD 36297 2147 6 able able JJ 36297 2147 7 to to TO 36297 2147 8 put put VB 36297 2147 9 color color NN 36297 2147 10 in in IN 36297 2147 11 shadows shadow NNS 36297 2147 12 as as RB 36297 2147 13 well well RB 36297 2147 14 as as IN 36297 2147 15 in in IN 36297 2147 16 lights light NNS 36297 2147 17 . . . 36297 2148 1 Gradually gradually RB 36297 2148 2 paintings painting NNS 36297 2148 3 became become VBD 36297 2148 4 more more RBR 36297 2148 5 brilliant brilliant JJ 36297 2148 6 . . . 36297 2149 1 Monet Monet NNP 36297 2149 2 , , , 36297 2149 3 Claude Claude NNP 36297 2149 4 , , , 36297 2149 5 and and CC 36297 2149 6 others other NNS 36297 2149 7 worked work VBD 36297 2149 8 toward toward IN 36297 2149 9 this this DT 36297 2149 10 goal goal NN 36297 2149 11 until until IN 36297 2149 12 the the DT 36297 2149 13 brightnesses brightness NNS 36297 2149 14 of of IN 36297 2149 15 paintings painting NNS 36297 2149 16 reached reach VBD 36297 2149 17 the the DT 36297 2149 18 limits limit NNS 36297 2149 19 of of IN 36297 2149 20 pigments pigment NNS 36297 2149 21 . . . 36297 2150 1 The the DT 36297 2150 2 impressionists impressionist NNS 36297 2150 3 , , , 36297 2150 4 in in IN 36297 2150 5 their -PRON- PRP$ 36297 2150 6 desire desire NN 36297 2150 7 to to TO 36297 2150 8 paint paint VB 36297 2150 9 nature nature NN 36297 2150 10 's 's POS 36297 2150 11 light light NN 36297 2150 12 , , , 36297 2150 13 introduced introduce VBN 36297 2150 14 something something NN 36297 2150 15 which which WDT 36297 2150 16 was be VBD 36297 2150 17 nothing nothing NN 36297 2150 18 more more JJR 36297 2150 19 nor nor CC 36297 2150 20 less less JJR 36297 2150 21 than than IN 36297 2150 22 science science NN 36297 2150 23 . . . 36297 2151 1 All all PDT 36297 2151 2 this this DT 36297 2151 3 time time NN 36297 2151 4 the the DT 36297 2151 5 true true JJ 36297 2151 6 creative creative JJ 36297 2151 7 artist artist NN 36297 2151 8 was be VBD 36297 2151 9 introducing introduce VBG 36297 2151 10 science science NN 36297 2151 11 -- -- : 36297 2151 12 in in IN 36297 2151 13 fact fact NN 36297 2151 14 , , , 36297 2151 15 illusions illusion NNS 36297 2151 16 -- -- : 36297 2151 17 to to TO 36297 2151 18 produce produce VB 36297 2151 19 the the DT 36297 2151 20 perfect perfect JJ 36297 2151 21 illusion illusion NN 36297 2151 22 which which WDT 36297 2151 23 was be VBD 36297 2151 24 his -PRON- PRP$ 36297 2151 25 goal goal NN 36297 2151 26 . . . 36297 2152 1 A a DT 36297 2152 2 survey survey NN 36297 2152 3 of of IN 36297 2152 4 any any DT 36297 2152 5 representative representative JJ 36297 2152 6 paintings painting NNS 36297 2152 7 ' ' POS 36297 2152 8 gallery gallery NN 36297 2152 9 shows show VBZ 36297 2152 10 the the DT 36297 2152 11 result result NN 36297 2152 12 of of IN 36297 2152 13 the the DT 36297 2152 14 application application NN 36297 2152 15 of of IN 36297 2152 16 more more JJR 36297 2152 17 and and CC 36297 2152 18 more more JJR 36297 2152 19 knowledge knowledge NN 36297 2152 20 , , , 36297 2152 21 as as IN 36297 2152 22 the the DT 36297 2152 23 art art NN 36297 2152 24 of of IN 36297 2152 25 painting painting NN 36297 2152 26 progressed progress VBN 36297 2152 27 through through IN 36297 2152 28 the the DT 36297 2152 29 centuries century NNS 36297 2152 30 . . . 36297 2153 1 Surely surely RB 36297 2153 2 we -PRON- PRP 36297 2153 3 can can MD 36297 2153 4 not not RB 36297 2153 5 go go VB 36297 2153 6 back back RB 36297 2153 7 to to IN 36297 2153 8 the the DT 36297 2153 9 brown brown JJ 36297 2153 10 shadows shadow NNS 36297 2153 11 and and CC 36297 2153 12 sombre sombre JJ 36297 2153 13 landscapes landscape NNS 36297 2153 14 of of IN 36297 2153 15 the the DT 36297 2153 16 past past NN 36297 2153 17 . . . 36297 2154 1 In in IN 36297 2154 2 the the DT 36297 2154 3 earliest early JJS 36297 2154 4 art art NN 36297 2154 5 , , , 36297 2154 6 in in IN 36297 2154 7 the the DT 36297 2154 8 efforts effort NNS 36297 2154 9 of of IN 36297 2154 10 children child NNS 36297 2154 11 , , , 36297 2154 12 in in IN 36297 2154 13 the the DT 36297 2154 14 wall wall NN 36297 2154 15 - - HYPH 36297 2154 16 paintings painting NNS 36297 2154 17 of of IN 36297 2154 18 the the DT 36297 2154 19 Egyptians Egyptians NNPS 36297 2154 20 , , , 36297 2154 21 and and CC 36297 2154 22 in in IN 36297 2154 23 Japanese japanese JJ 36297 2154 24 representation representation NN 36297 2154 25 of of IN 36297 2154 26 nature nature NN 36297 2154 27 , , , 36297 2154 28 the the DT 36297 2154 29 process process NN 36297 2154 30 is be VBZ 36297 2154 31 selective selective JJ 36297 2154 32 and and CC 36297 2154 33 not not RB 36297 2154 34 imitative imitative JJ 36297 2154 35 . . . 36297 2155 1 Certain certain JJ 36297 2155 2 things thing NNS 36297 2155 3 are be VBP 36297 2155 4 chosen choose VBN 36297 2155 5 and and CC 36297 2155 6 everything everything NN 36297 2155 7 else else RB 36297 2155 8 is be VBZ 36297 2155 9 discarded discard VBN 36297 2155 10 . . . 36297 2156 1 In in IN 36297 2156 2 such such JJ 36297 2156 3 art art NN 36297 2156 4 selection selection NN 36297 2156 5 is be VBZ 36297 2156 6 carried carry VBN 36297 2156 7 to to IN 36297 2156 8 the the DT 36297 2156 9 extreme extreme NN 36297 2156 10 . . . 36297 2157 1 Much much JJ 36297 2157 2 of of IN 36297 2157 3 this this DT 36297 2157 4 simplicity simplicity NN 36297 2157 5 was be VBD 36297 2157 6 due due JJ 36297 2157 7 to to IN 36297 2157 8 a a DT 36297 2157 9 lack lack NN 36297 2157 10 of of IN 36297 2157 11 knowledge knowledge NN 36297 2157 12 . . . 36297 2158 1 Light light NN 36297 2158 2 and and CC 36297 2158 3 shade shade NN 36297 2158 4 , , , 36297 2158 5 or or CC 36297 2158 6 shading shade VBG 36297 2158 7 , , , 36297 2158 8 was be VBD 36297 2158 9 not not RB 36297 2158 10 introduced introduce VBN 36297 2158 11 until until IN 36297 2158 12 science science NN 36297 2158 13 discovered discover VBN 36297 2158 14 and and CC 36297 2158 15 organized organize VBD 36297 2158 16 its -PRON- PRP$ 36297 2158 17 facts fact NNS 36297 2158 18 . . . 36297 2159 1 Quite quite RB 36297 2159 2 in in IN 36297 2159 3 the the DT 36297 2159 4 same same JJ 36297 2159 5 manner manner NN 36297 2159 6 linear linear JJ 36297 2159 7 and and CC 36297 2159 8 aerial aerial JJ 36297 2159 9 perspective perspective NN 36297 2159 10 made make VBD 36297 2159 11 their -PRON- PRP$ 36297 2159 12 appearances appearance NNS 36297 2159 13 until until IN 36297 2159 14 in in IN 36297 2159 15 our -PRON- PRP$ 36297 2159 16 present present JJ 36297 2159 17 art art NN 36297 2159 18 the the DT 36297 2159 19 process process NN 36297 2159 20 of of IN 36297 2159 21 selection selection NN 36297 2159 22 is be VBZ 36297 2159 23 complex complex JJ 36297 2159 24 . . . 36297 2160 1 In in IN 36297 2160 2 our -PRON- PRP$ 36297 2160 3 paintings painting NNS 36297 2160 4 of of IN 36297 2160 5 today today NN 36297 2160 6 objects object NNS 36297 2160 7 are be VBP 36297 2160 8 modeled model VBN 36297 2160 9 by by IN 36297 2160 10 light light NN 36297 2160 11 and and CC 36297 2160 12 shade shade NN 36297 2160 13 ; ; : 36297 2160 14 they -PRON- PRP 36297 2160 15 are be VBP 36297 2160 16 related relate VBN 36297 2160 17 by by IN 36297 2160 18 perspective perspective NN 36297 2160 19 ; ; : 36297 2160 20 backgrounds background NNS 36297 2160 21 and and CC 36297 2160 22 surroundings surrounding NNS 36297 2160 23 are be VBP 36297 2160 24 carefully carefully RB 36297 2160 25 considered consider VBN 36297 2160 26 ; ; : 36297 2160 27 the the DT 36297 2160 28 proper proper JJ 36297 2160 29 emphasis emphasis NN 36297 2160 30 of of IN 36297 2160 31 light light NN 36297 2160 32 , , , 36297 2160 33 shade shade NN 36297 2160 34 and and CC 36297 2160 35 color color NN 36297 2160 36 are be VBP 36297 2160 37 given give VBN 36297 2160 38 to to IN 36297 2160 39 certain certain JJ 36297 2160 40 details detail NNS 36297 2160 41 . . . 36297 2161 1 The the DT 36297 2161 2 present present JJ 36297 2161 3 complexity complexity NN 36297 2161 4 provides provide VBZ 36297 2161 5 unprecedented unprecedented JJ 36297 2161 6 opportunities opportunity NNS 36297 2161 7 for for IN 36297 2161 8 the the DT 36297 2161 9 application application NN 36297 2161 10 of of IN 36297 2161 11 knowledge knowledge NN 36297 2161 12 pertaining pertain VBG 36297 2161 13 to to IN 36297 2161 14 illusions illusion NNS 36297 2161 15 but but CC 36297 2161 16 it -PRON- PRP 36297 2161 17 should should MD 36297 2161 18 be be VB 36297 2161 19 understood understand VBN 36297 2161 20 that that IN 36297 2161 21 this this DT 36297 2161 22 application application NN 36297 2161 23 tends tend VBZ 36297 2161 24 only only RB 36297 2161 25 toward toward IN 36297 2161 26 realism realism NN 36297 2161 27 of of IN 36297 2161 28 external external JJ 36297 2161 29 things thing NNS 36297 2161 30 . . . 36297 2162 1 Idealism idealism NN 36297 2162 2 in in IN 36297 2162 3 art art NN 36297 2162 4 and and CC 36297 2162 5 realism realism NN 36297 2162 6 of of IN 36297 2162 7 character character NN 36297 2162 8 and and CC 36297 2162 9 expression expression NN 36297 2162 10 are be VBP 36297 2162 11 accomplished accomplish VBN 36297 2162 12 by by IN 36297 2162 13 the the DT 36297 2162 14 same same JJ 36297 2162 15 tools tool NNS 36297 2162 16 -- -- : 36297 2162 17 pigments pigment NNS 36297 2162 18 and and CC 36297 2162 19 brushes brush NNS 36297 2162 20 -- -- : 36297 2162 21 as as IN 36297 2162 22 realism realism NN 36297 2162 23 of of IN 36297 2162 24 objective objective JJ 36297 2162 25 details detail NNS 36297 2162 26 is be VBZ 36297 2162 27 attained attain VBN 36297 2162 28 and and CC 36297 2162 29 there there EX 36297 2162 30 is be VBZ 36297 2162 31 nothing nothing NN 36297 2162 32 mysterious mysterious JJ 36297 2162 33 in in IN 36297 2162 34 the the DT 36297 2162 35 masterpieces masterpiece NNS 36297 2162 36 of of IN 36297 2162 37 this this DT 36297 2162 38 kind kind NN 36297 2162 39 . . . 36297 2163 1 Mystery mystery NN 36297 2163 2 in in IN 36297 2163 3 art art NN 36297 2163 4 as as IN 36297 2163 5 in in IN 36297 2163 6 other other JJ 36297 2163 7 activities activity NNS 36297 2163 8 is be VBZ 36297 2163 9 merely merely RB 36297 2163 10 lack lack NN 36297 2163 11 of of IN 36297 2163 12 understanding understanding NN 36297 2163 13 due due IN 36297 2163 14 to to IN 36297 2163 15 inadequate inadequate JJ 36297 2163 16 knowledge knowledge NN 36297 2163 17 . . . 36297 2164 1 Mysteries mystery NNS 36297 2164 2 of of IN 36297 2164 3 today today NN 36297 2164 4 become become VBP 36297 2164 5 facts fact NNS 36297 2164 6 tomorrow tomorrow NN 36297 2164 7 . . . 36297 2165 1 Science science NN 36297 2165 2 moves move NNS 36297 2165 3 with with IN 36297 2165 4 certainty certainty NN 36297 2165 5 into into IN 36297 2165 6 the the DT 36297 2165 7 unknown unknown JJ 36297 2165 8 , , , 36297 2165 9 reaping reap VBG 36297 2165 10 and and CC 36297 2165 11 binding bind VBG 36297 2165 12 the the DT 36297 2165 13 facts fact NNS 36297 2165 14 and and CC 36297 2165 15 dropping drop VBG 36297 2165 16 them -PRON- PRP 36297 2165 17 behind behind RB 36297 2165 18 where where WRB 36297 2165 19 they -PRON- PRP 36297 2165 20 may may MD 36297 2165 21 be be VB 36297 2165 22 utilized utilize VBN 36297 2165 23 by by IN 36297 2165 24 those those DT 36297 2165 25 who who WP 36297 2165 26 will will MD 36297 2165 27 . . . 36297 2166 1 The the DT 36297 2166 2 painter painter NN 36297 2166 3 can can MD 36297 2166 4 imitate imitate VB 36297 2166 5 aerial aerial JJ 36297 2166 6 perspective perspective NN 36297 2166 7 although although IN 36297 2166 8 many many JJ 36297 2166 9 centuries century NNS 36297 2166 10 elapsed elapse VBN 36297 2166 11 before before IN 36297 2166 12 mankind mankind NN 36297 2166 13 was be VBD 36297 2166 14 keen keen JJ 36297 2166 15 enough enough RB 36297 2166 16 to to TO 36297 2166 17 note note VB 36297 2166 18 its -PRON- PRP$ 36297 2166 19 presence presence NN 36297 2166 20 in in IN 36297 2166 21 nature nature NN 36297 2166 22 . . . 36297 2167 1 The the DT 36297 2167 2 atmospheric atmospheric JJ 36297 2167 3 haze haze NN 36297 2167 4 diminishes diminish VBZ 36297 2167 5 the the DT 36297 2167 6 brightness brightness NN 36297 2167 7 of of IN 36297 2167 8 very very RB 36297 2167 9 bright bright JJ 36297 2167 10 objects object NNS 36297 2167 11 and and CC 36297 2167 12 increases increase NNS 36297 2167 13 that that DT 36297 2167 14 of of IN 36297 2167 15 dark dark JJ 36297 2167 16 objects object NNS 36297 2167 17 . . . 36297 2168 1 It -PRON- PRP 36297 2168 2 blurs blur VBZ 36297 2168 3 the the DT 36297 2168 4 distant distant JJ 36297 2168 5 details detail NNS 36297 2168 6 and and CC 36297 2168 7 adds add VBZ 36297 2168 8 a a DT 36297 2168 9 tinge tinge NN 36297 2168 10 of of IN 36297 2168 11 blue blue JJ 36297 2168 12 or or CC 36297 2168 13 violet violet NN 36297 2168 14 to to IN 36297 2168 15 the the DT 36297 2168 16 distance distance NN 36297 2168 17 . . . 36297 2169 1 In in IN 36297 2169 2 painting paint VBG 36297 2169 3 it -PRON- PRP 36297 2169 4 is be VBZ 36297 2169 5 a a DT 36297 2169 6 powerful powerful JJ 36297 2169 7 illusion illusion NN 36297 2169 8 which which WDT 36297 2169 9 the the DT 36297 2169 10 painter painter NN 36297 2169 11 has have VBZ 36297 2169 12 learned learn VBN 36297 2169 13 to to TO 36297 2169 14 employ employ VB 36297 2169 15 . . . 36297 2170 1 The the DT 36297 2170 2 painter painter NN 36297 2170 3 can can MD 36297 2170 4 accurately accurately RB 36297 2170 5 imitate imitate VB 36297 2170 6 mathematical mathematical JJ 36297 2170 7 or or CC 36297 2170 8 linear linear JJ 36297 2170 9 perspective perspective NN 36297 2170 10 but but CC 36297 2170 11 the the DT 36297 2170 12 art art NN 36297 2170 13 of of IN 36297 2170 14 early early JJ 36297 2170 15 centuries century NNS 36297 2170 16 does do VBZ 36297 2170 17 not not RB 36297 2170 18 exhibit exhibit VB 36297 2170 19 this this DT 36297 2170 20 feature feature NN 36297 2170 21 . . . 36297 2171 1 In in IN 36297 2171 2 a a DT 36297 2171 3 painting painting NN 36297 2171 4 a a DT 36297 2171 5 tremendously tremendously RB 36297 2171 6 powerful powerful JJ 36297 2171 7 illusion illusion NN 36297 2171 8 of of IN 36297 2171 9 the the DT 36297 2171 10 third third JJ 36297 2171 11 dimension dimension NN 36297 2171 12 is be VBZ 36297 2171 13 obtained obtain VBN 36297 2171 14 by by IN 36297 2171 15 diminishing diminish VBG 36297 2171 16 the the DT 36297 2171 17 size size NN 36297 2171 18 of of IN 36297 2171 19 objects object NNS 36297 2171 20 as as IN 36297 2171 21 they -PRON- PRP 36297 2171 22 are be VBP 36297 2171 23 represented represent VBN 36297 2171 24 in in IN 36297 2171 25 the the DT 36297 2171 26 distance distance NN 36297 2171 27 . . . 36297 2172 1 Converging converge VBG 36297 2172 2 lines line NNS 36297 2172 3 and and CC 36297 2172 4 the the DT 36297 2172 5 other other JJ 36297 2172 6 manifold manifold JJ 36297 2172 7 details detail NNS 36297 2172 8 of of IN 36297 2172 9 perspective perspective NN 36297 2172 10 are be VBP 36297 2172 11 aiding aid VBG 36297 2172 12 the the DT 36297 2172 13 artist artist NN 36297 2172 14 in in IN 36297 2172 15 his -PRON- PRP$ 36297 2172 16 efforts effort NNS 36297 2172 17 toward toward IN 36297 2172 18 the the DT 36297 2172 19 production production NN 36297 2172 20 of of IN 36297 2172 21 the the DT 36297 2172 22 great great JJ 36297 2172 23 illusion illusion NN 36297 2172 24 of of IN 36297 2172 25 painting painting NN 36297 2172 26 . . . 36297 2173 1 The the DT 36297 2173 2 painter painter NN 36297 2173 3 can can MD 36297 2173 4 not not RB 36297 2173 5 imitate imitate VB 36297 2173 6 focal focal JJ 36297 2173 7 perspective perspective NN 36297 2173 8 or or CC 36297 2173 9 binocular binocular JJ 36297 2173 10 perspective perspective NN 36297 2173 11 . . . 36297 2174 1 He -PRON- PRP 36297 2174 2 can can MD 36297 2174 3 try try VB 36297 2174 4 to to TO 36297 2174 5 imitate imitate VB 36297 2174 6 the the DT 36297 2174 7 definition definition NN 36297 2174 8 in in IN 36297 2174 9 the the DT 36297 2174 10 central central JJ 36297 2174 11 portion portion NN 36297 2174 12 of of IN 36297 2174 13 the the DT 36297 2174 14 visual visual JJ 36297 2174 15 field field NN 36297 2174 16 and and CC 36297 2174 17 the the DT 36297 2174 18 increased increase VBN 36297 2174 19 blurring blur VBG 36297 2174 20 toward toward IN 36297 2174 21 the the DT 36297 2174 22 periphery periphery NN 36297 2174 23 . . . 36297 2175 1 Focal focal JJ 36297 2175 2 perspective perspective NN 36297 2175 3 is be VBZ 36297 2175 4 not not RB 36297 2175 5 of of IN 36297 2175 6 much much JJ 36297 2175 7 importance importance NN 36297 2175 8 in in IN 36297 2175 9 painting painting NN 36297 2175 10 , , , 36297 2175 11 because because IN 36297 2175 12 it -PRON- PRP 36297 2175 13 is be VBZ 36297 2175 14 scarcely scarcely RB 36297 2175 15 perceptible perceptible JJ 36297 2175 16 at at IN 36297 2175 17 the the DT 36297 2175 18 distances distance NNS 36297 2175 19 at at IN 36297 2175 20 which which WDT 36297 2175 21 paintings painting NNS 36297 2175 22 are be VBP 36297 2175 23 usually usually RB 36297 2175 24 viewed view VBN 36297 2175 25 . . . 36297 2176 1 However however RB 36297 2176 2 the the DT 36297 2176 3 absence absence NN 36297 2176 4 of of IN 36297 2176 5 binocular binocular JJ 36297 2176 6 perspective perspective NN 36297 2176 7 in in IN 36297 2176 8 painting painting NN 36297 2176 9 does do VBZ 36297 2176 10 decrease decrease VB 36297 2176 11 the the DT 36297 2176 12 effectiveness effectiveness NN 36297 2176 13 of of IN 36297 2176 14 the the DT 36297 2176 15 illusion illusion NN 36297 2176 16 very very RB 36297 2176 17 markedly markedly RB 36297 2176 18 . . . 36297 2177 1 For for IN 36297 2177 2 this this DT 36297 2177 3 reason reason NN 36297 2177 4 a a DT 36297 2177 5 painting painting NN 36297 2177 6 is be VBZ 36297 2177 7 a a DT 36297 2177 8 more more RBR 36297 2177 9 successful successful JJ 36297 2177 10 illusion illusion NN 36297 2177 11 when when WRB 36297 2177 12 viewed view VBN 36297 2177 13 with with IN 36297 2177 14 one one CD 36297 2177 15 eye eye NN 36297 2177 16 than than IN 36297 2177 17 with with IN 36297 2177 18 two two CD 36297 2177 19 eyes eye NNS 36297 2177 20 . . . 36297 2178 1 Of of RB 36297 2178 2 course course RB 36297 2178 3 , , , 36297 2178 4 in in IN 36297 2178 5 one one CD 36297 2178 6 of of IN 36297 2178 7 nature nature NN 36297 2178 8 's 's POS 36297 2178 9 scenes scene NNS 36297 2178 10 the the DT 36297 2178 11 converse converse NN 36297 2178 12 is be VBZ 36297 2178 13 true true JJ 36297 2178 14 because because IN 36297 2178 15 when when WRB 36297 2178 16 viewing view VBG 36297 2178 17 it -PRON- PRP 36297 2178 18 with with IN 36297 2178 19 both both DT 36297 2178 20 eyes eye NNS 36297 2178 21 all all PDT 36297 2178 22 the the DT 36297 2178 23 forms form NNS 36297 2178 24 of of IN 36297 2178 25 perspective perspective NN 36297 2178 26 coöperate coöperate JJ 36297 2178 27 to to IN 36297 2178 28 the the DT 36297 2178 29 final final JJ 36297 2178 30 end end NN 36297 2178 31 -- -- : 36297 2178 32 the the DT 36297 2178 33 true true JJ 36297 2178 34 impression impression NN 36297 2178 35 of of IN 36297 2178 36 three three CD 36297 2178 37 dimensions dimension NNS 36297 2178 38 . . . 36297 2179 1 The the DT 36297 2179 2 painter painter NN 36297 2179 3 may may MD 36297 2179 4 imitate imitate VB 36297 2179 5 the the DT 36297 2179 6 light light NN 36297 2179 7 and and CC 36297 2179 8 shade shade NN 36297 2179 9 of of IN 36297 2179 10 solid solid JJ 36297 2179 11 forms form NNS 36297 2179 12 and and CC 36297 2179 13 thereby thereby RB 36297 2179 14 apparently apparently RB 36297 2179 15 model model VBP 36297 2179 16 them -PRON- PRP 36297 2179 17 . . . 36297 2180 1 In in IN 36297 2180 2 this this DT 36297 2180 3 respect respect NN 36297 2180 4 a a DT 36297 2180 5 remarkable remarkable JJ 36297 2180 6 illusion illusion NN 36297 2180 7 of of IN 36297 2180 8 solid solid JJ 36297 2180 9 form form NN 36297 2180 10 or or CC 36297 2180 11 of of IN 36297 2180 12 depth depth NN 36297 2180 13 may may MD 36297 2180 14 be be VB 36297 2180 15 obtained obtain VBN 36297 2180 16 . . . 36297 2181 1 For for IN 36297 2181 2 example example NN 36297 2181 3 , , , 36297 2181 4 a a DT 36297 2181 5 painted paint VBN 36297 2181 6 column column NN 36297 2181 7 may may MD 36297 2181 8 be be VB 36297 2181 9 made make VBN 36297 2181 10 to to TO 36297 2181 11 appear appear VB 36297 2181 12 circular circular JJ 36297 2181 13 in in IN 36297 2181 14 cross cross NN 36297 2181 15 - - NN 36297 2181 16 section section NN 36297 2181 17 or or CC 36297 2181 18 a a DT 36297 2181 19 circle circle NN 36297 2181 20 when when WRB 36297 2181 21 properly properly RB 36297 2181 22 shaded shaded JJ 36297 2181 23 will will MD 36297 2181 24 appear appear VB 36297 2181 25 to to TO 36297 2181 26 be be VB 36297 2181 27 a a DT 36297 2181 28 sphere sphere NN 36297 2181 29 . . . 36297 2182 1 Both both DT 36297 2182 2 of of IN 36297 2182 3 these these DT 36297 2182 4 , , , 36297 2182 5 of of IN 36297 2182 6 course course NN 36297 2182 7 , , , 36297 2182 8 are be VBP 36297 2182 9 pure pure JJ 36297 2182 10 illusions illusion NNS 36297 2182 11 . . . 36297 2183 1 Some some DT 36297 2183 2 stage stage NN 36297 2183 3 paintings painting NNS 36297 2183 4 are be VBP 36297 2183 5 remarkable remarkable JJ 36297 2183 6 illusions illusion NNS 36297 2183 7 of of IN 36297 2183 8 depth depth NN 36297 2183 9 , , , 36297 2183 10 and and CC 36297 2183 11 their -PRON- PRP$ 36297 2183 12 success success NN 36297 2183 13 depends depend VBZ 36297 2183 14 chiefly chiefly RB 36297 2183 15 upon upon IN 36297 2183 16 linear linear JJ 36297 2183 17 perspective perspective NN 36297 2183 18 and and CC 36297 2183 19 shadows shadow NNS 36297 2183 20 . . . 36297 2184 1 However however RB 36297 2184 2 , , , 36297 2184 3 the the DT 36297 2184 4 illusion illusion NN 36297 2184 5 which which WDT 36297 2184 6 was be VBD 36297 2184 7 so so RB 36297 2184 8 complete complete JJ 36297 2184 9 at at IN 36297 2184 10 a a DT 36297 2184 11 distance distance NN 36297 2184 12 quite quite RB 36297 2184 13 disappears disappear VBZ 36297 2184 14 at at IN 36297 2184 15 close close JJ 36297 2184 16 range range NN 36297 2184 17 . . . 36297 2185 1 The the DT 36297 2185 2 inadequate inadequate JJ 36297 2185 3 range range NN 36297 2185 4 of of IN 36297 2185 5 brightnesses brightness NNS 36297 2185 6 or or CC 36297 2185 7 values value NNS 36297 2185 8 obtainable obtainable JJ 36297 2185 9 by by IN 36297 2185 10 means mean NNS 36297 2185 11 of of IN 36297 2185 12 pigments pigment NNS 36297 2185 13 has have VBZ 36297 2185 14 already already RB 36297 2185 15 been be VBN 36297 2185 16 discussed discuss VBN 36297 2185 17 . . . 36297 2186 1 The the DT 36297 2186 2 sky sky NN 36297 2186 3 in in IN 36297 2186 4 a a DT 36297 2186 5 landscape landscape NN 36297 2186 6 may may MD 36297 2186 7 be be VB 36297 2186 8 thousands thousand NNS 36297 2186 9 of of IN 36297 2186 10 times time NNS 36297 2186 11 brighter bright JJR 36297 2186 12 than than IN 36297 2186 13 a a DT 36297 2186 14 deep deep JJ 36297 2186 15 shadow shadow NN 36297 2186 16 or or CC 36297 2186 17 a a DT 36297 2186 18 hole hole NN 36297 2186 19 in in IN 36297 2186 20 the the DT 36297 2186 21 ground ground NN 36297 2186 22 . . . 36297 2187 1 A a DT 36297 2187 2 cumulus cumulus JJ 36297 2187 3 cloud cloud NN 36297 2187 4 in in IN 36297 2187 5 the the DT 36297 2187 6 sky sky NN 36297 2187 7 may may MD 36297 2187 8 be be VB 36297 2187 9 a a DT 36297 2187 10 hundred hundred CD 36297 2187 11 thousand thousand CD 36297 2187 12 times time NNS 36297 2187 13 brighter bright JJR 36297 2187 14 than than IN 36297 2187 15 the the DT 36297 2187 16 deepest deep JJS 36297 2187 17 shadow shadow NN 36297 2187 18 . . . 36297 2188 1 However however RB 36297 2188 2 , , , 36297 2188 3 the the DT 36297 2188 4 artist artist NN 36297 2188 5 must must MD 36297 2188 6 represent represent VB 36297 2188 7 a a DT 36297 2188 8 landscape landscape NN 36297 2188 9 by by IN 36297 2188 10 means mean NNS 36297 2188 11 of of IN 36297 2188 12 a a DT 36297 2188 13 palette palette NN 36297 2188 14 whose whose WP$ 36297 2188 15 white white NN 36297 2188 16 is be VBZ 36297 2188 17 only only RB 36297 2188 18 about about IN 36297 2188 19 thirty thirty CD 36297 2188 20 times time NNS 36297 2188 21 brighter bright JJR 36297 2188 22 than than IN 36297 2188 23 its -PRON- PRP$ 36297 2188 24 black black NN 36297 2188 25 . . . 36297 2189 1 If if IN 36297 2189 2 the the DT 36297 2189 3 sun sun NN 36297 2189 4 is be VBZ 36297 2189 5 considered consider VBN 36297 2189 6 we -PRON- PRP 36297 2189 7 may may MD 36297 2189 8 have have VB 36297 2189 9 in in IN 36297 2189 10 a a DT 36297 2189 11 landscape landscape NN 36297 2189 12 a a DT 36297 2189 13 range range NN 36297 2189 14 of of IN 36297 2189 15 brightness brightness NN 36297 2189 16 represented represent VBN 36297 2189 17 by by IN 36297 2189 18 millions million NNS 36297 2189 19 . . . 36297 2190 1 This this DT 36297 2190 2 illustrates illustrate VBZ 36297 2190 3 the the DT 36297 2190 4 pitiable pitiable JJ 36297 2190 5 weakness weakness NN 36297 2190 6 of of IN 36297 2190 7 pigments pigment NNS 36297 2190 8 alone alone JJ 36297 2190 9 as as IN 36297 2190 10 representative representative JJ 36297 2190 11 media medium NNS 36297 2190 12 . . . 36297 2191 1 Will Will MD 36297 2191 2 not not RB 36297 2191 3 light light VB 36297 2191 4 _ _ NNP 36297 2191 5 transmitted transmit VBN 36297 2191 6 _ _ NNP 36297 2191 7 through through IN 36297 2191 8 media medium NNS 36297 2191 9 some some DT 36297 2191 10 day day NN 36297 2191 11 be be VB 36297 2191 12 utilized utilize VBN 36297 2191 13 to to TO 36297 2191 14 overcome overcome VB 36297 2191 15 this this DT 36297 2191 16 inherent inherent JJ 36297 2191 17 handicap handicap NN 36297 2191 18 of of IN 36297 2191 19 reflecting reflect VBG 36297 2191 20 media medium NNS 36297 2191 21 ? ? . 36297 2192 1 To to IN 36297 2192 2 what what WDT 36297 2192 3 extent extent NN 36297 2192 4 is be VBZ 36297 2192 5 the the DT 36297 2192 6 success success NN 36297 2192 7 of of IN 36297 2192 8 stained stain VBN 36297 2192 9 glass glass NN 36297 2192 10 windows window NNS 36297 2192 11 due due JJ 36297 2192 12 to to IN 36297 2192 13 a a DT 36297 2192 14 lessening lessening NN 36297 2192 15 of of IN 36297 2192 16 this this DT 36297 2192 17 handicap handicap NN 36297 2192 18 ? ? . 36297 2193 1 The the DT 36297 2193 2 range range NN 36297 2193 3 of of IN 36297 2193 4 brightness brightness NN 36297 2193 5 in in IN 36297 2193 6 this this DT 36297 2193 7 case case NN 36297 2193 8 may may MD 36297 2193 9 be be VB 36297 2193 10 represented represent VBN 36297 2193 11 by by IN 36297 2193 12 a a DT 36297 2193 13 black black JJ 36297 2193 14 ( ( -LRB- 36297 2193 15 non non JJ 36297 2193 16 - - JJ 36297 2193 17 transmitting transmitting JJ 36297 2193 18 ) ) -RRB- 36297 2193 19 portion portion NN 36297 2193 20 to to IN 36297 2193 21 the the DT 36297 2193 22 brightness brightness NN 36297 2193 23 of of IN 36297 2193 24 the the DT 36297 2193 25 background background NN 36297 2193 26 ( ( -LRB- 36297 2193 27 artificial artificial JJ 36297 2193 28 or or CC 36297 2193 29 sky sky NN 36297 2193 30 ) ) -RRB- 36297 2193 31 as as IN 36297 2193 32 seen see VBN 36297 2193 33 through through IN 36297 2193 34 an an DT 36297 2193 35 area area NN 36297 2193 36 of of IN 36297 2193 37 clear clear JJ 36297 2193 38 glass glass NN 36297 2193 39 . . . 36297 2194 1 Transparencies transparency NNS 36297 2194 2 have have VBP 36297 2194 3 an an DT 36297 2194 4 inherent inherent JJ 36297 2194 5 advantage advantage NN 36297 2194 6 over over IN 36297 2194 7 ordinary ordinary JJ 36297 2194 8 paintings painting NNS 36297 2194 9 in in IN 36297 2194 10 this this DT 36297 2194 11 respect respect NN 36297 2194 12 and and CC 36297 2194 13 many many JJ 36297 2194 14 effective effective JJ 36297 2194 15 results result NNS 36297 2194 16 may may MD 36297 2194 17 be be VB 36297 2194 18 obtained obtain VBN 36297 2194 19 with with IN 36297 2194 20 them -PRON- PRP 36297 2194 21 even even RB 36297 2194 22 in in IN 36297 2194 23 photography photography NN 36297 2194 24 . . . 36297 2195 1 It -PRON- PRP 36297 2195 2 is be VBZ 36297 2195 3 interesting interesting JJ 36297 2195 4 to to TO 36297 2195 5 study study VB 36297 2195 6 the the DT 36297 2195 7 effect effect NN 36297 2195 8 of of IN 36297 2195 9 greatly greatly RB 36297 2195 10 increasing increase VBG 36297 2195 11 the the DT 36297 2195 12 range range NN 36297 2195 13 of of IN 36297 2195 14 values value NNS 36297 2195 15 or or CC 36297 2195 16 brightnesses brightness NNS 36297 2195 17 in in IN 36297 2195 18 paintings painting NNS 36297 2195 19 by by IN 36297 2195 20 utilizing utilize VBG 36297 2195 21 non non JJ 36297 2195 22 - - JJ 36297 2195 23 uniform uniform JJ 36297 2195 24 distributions distribution NNS 36297 2195 25 of of IN 36297 2195 26 light light NN 36297 2195 27 . . . 36297 2196 1 Let let VB 36297 2196 2 us -PRON- PRP 36297 2196 3 take take VB 36297 2196 4 a a DT 36297 2196 5 given give VBN 36297 2196 6 landscape landscape NN 36297 2196 7 painting painting NN 36297 2196 8 . . . 36297 2197 1 If if IN 36297 2197 2 a a DT 36297 2197 3 light light JJ 36297 2197 4 - - HYPH 36297 2197 5 source source NN 36297 2197 6 be be VB 36297 2197 7 so so RB 36297 2197 8 placed place VBN 36297 2197 9 that that IN 36297 2197 10 it -PRON- PRP 36297 2197 11 is be VBZ 36297 2197 12 close close JJ 36297 2197 13 to to IN 36297 2197 14 the the DT 36297 2197 15 brighter bright JJR 36297 2197 16 areas area NNS 36297 2197 17 ( ( -LRB- 36297 2197 18 perhaps perhaps RB 36297 2197 19 clouds cloud NNS 36297 2197 20 and and CC 36297 2197 21 sky sky NN 36297 2197 22 near near IN 36297 2197 23 the the DT 36297 2197 24 sun sun NN 36297 2197 25 ) ) -RRB- 36297 2197 26 it -PRON- PRP 36297 2197 27 will will MD 36297 2197 28 illuminate illuminate VB 36297 2197 29 this this DT 36297 2197 30 brighter bright JJR 36297 2197 31 portion portion NN 36297 2197 32 several several JJ 36297 2197 33 times time NNS 36297 2197 34 more more RBR 36297 2197 35 intensely intensely RB 36297 2197 36 than than IN 36297 2197 37 the the DT 36297 2197 38 more more RBR 36297 2197 39 distant distant JJ 36297 2197 40 darker dark JJR 36297 2197 41 portions portion NNS 36297 2197 42 of of IN 36297 2197 43 the the DT 36297 2197 44 picture picture NN 36297 2197 45 ( ( -LRB- 36297 2197 46 foreground foreground NN 36297 2197 47 of of IN 36297 2197 48 trees tree NNS 36297 2197 49 , , , 36297 2197 50 underbrush underbrush NNP 36297 2197 51 , , , 36297 2197 52 deep deep JJ 36297 2197 53 shadows shadow NNS 36297 2197 54 , , , 36297 2197 55 etc etc FW 36297 2197 56 . . . 36297 2197 57 ) ) -RRB- 36297 2197 58 . . . 36297 2198 1 The the DT 36297 2198 2 addition addition NN 36297 2198 3 to to IN 36297 2198 4 the the DT 36297 2198 5 effectiveness effectiveness NN 36297 2198 6 of of IN 36297 2198 7 the the DT 36297 2198 8 illusion illusion NN 36297 2198 9 is be VBZ 36297 2198 10 quite quite RB 36297 2198 11 perceptible perceptible JJ 36297 2198 12 . . . 36297 2199 1 This this DT 36297 2199 2 effect effect NN 36297 2199 3 of of IN 36297 2199 4 non non JJ 36297 2199 5 - - JJ 36297 2199 6 uniform uniform JJ 36297 2199 7 lighting lighting NN 36297 2199 8 may may MD 36297 2199 9 be be VB 36297 2199 10 carried carry VBN 36297 2199 11 to to IN 36297 2199 12 the the DT 36297 2199 13 extreme extreme NN 36297 2199 14 for for IN 36297 2199 15 a a DT 36297 2199 16 painting painting NN 36297 2199 17 by by IN 36297 2199 18 making make VBG 36297 2199 19 a a DT 36297 2199 20 positive positive JJ 36297 2199 21 lantern lantern NN 36297 2199 22 - - HYPH 36297 2199 23 slide slide NN 36297 2199 24 ( ( -LRB- 36297 2199 25 rather rather RB 36297 2199 26 contrasty contrasty JJ 36297 2199 27 ) ) -RRB- 36297 2199 28 of of IN 36297 2199 29 the the DT 36297 2199 30 painting painting NN 36297 2199 31 and and CC 36297 2199 32 projecting project VBG 36297 2199 33 this this DT 36297 2199 34 slide slide NN 36297 2199 35 upon upon IN 36297 2199 36 the the DT 36297 2199 37 painting painting NN 36297 2199 38 in in IN 36297 2199 39 accurate accurate JJ 36297 2199 40 superposition superposition NN 36297 2199 41 . . . 36297 2200 1 Now now RB 36297 2200 2 if if IN 36297 2200 3 the the DT 36297 2200 4 painting painting NN 36297 2200 5 is be VBZ 36297 2200 6 illuminated illuminate VBN 36297 2200 7 solely solely RB 36297 2200 8 by by IN 36297 2200 9 the the DT 36297 2200 10 " " `` 36297 2200 11 lantern lantern JJ 36297 2200 12 - - HYPH 36297 2200 13 slide slide NN 36297 2200 14 " " '' 36297 2200 15 the the DT 36297 2200 16 range range NN 36297 2200 17 of of IN 36297 2200 18 contrast contrast NN 36297 2200 19 or or CC 36297 2200 20 brightness brightness NN 36297 2200 21 will will MD 36297 2200 22 be be VB 36297 2200 23 enormously enormously RB 36297 2200 24 increased increase VBN 36297 2200 25 . . . 36297 2201 1 The the DT 36297 2201 2 lightest light JJS 36297 2201 3 portions portion NNS 36297 2201 4 of of IN 36297 2201 5 the the DT 36297 2201 6 picture picture NN 36297 2201 7 will will MD 36297 2201 8 now now RB 36297 2201 9 be be VB 36297 2201 10 illuminated illuminate VBN 36297 2201 11 by by IN 36297 2201 12 light light NN 36297 2201 13 passing pass VBG 36297 2201 14 through through IN 36297 2201 15 the the DT 36297 2201 16 almost almost RB 36297 2201 17 totally totally RB 36297 2201 18 transparent transparent JJ 36297 2201 19 portions portion NNS 36297 2201 20 of of IN 36297 2201 21 the the DT 36297 2201 22 slide slide NN 36297 2201 23 and and CC 36297 2201 24 the the DT 36297 2201 25 darkest dark JJS 36297 2201 26 portions portion NNS 36297 2201 27 by by IN 36297 2201 28 light light NN 36297 2201 29 greatly greatly RB 36297 2201 30 reduced reduce VBN 36297 2201 31 by by IN 36297 2201 32 passing pass VBG 36297 2201 33 through through IN 36297 2201 34 the the DT 36297 2201 35 nearly nearly RB 36297 2201 36 opaque opaque JJ 36297 2201 37 portions portion NNS 36297 2201 38 of of IN 36297 2201 39 the the DT 36297 2201 40 slide slide NN 36297 2201 41 . . . 36297 2202 1 The the DT 36297 2202 2 original original JJ 36297 2202 3 range range NN 36297 2202 4 of of IN 36297 2202 5 contrast contrast NN 36297 2202 6 in in IN 36297 2202 7 the the DT 36297 2202 8 painting painting NN 36297 2202 9 , , , 36297 2202 10 perhaps perhaps RB 36297 2202 11 twenty twenty CD 36297 2202 12 to to IN 36297 2202 13 one one CD 36297 2202 14 , , , 36297 2202 15 is be VBZ 36297 2202 16 now now RB 36297 2202 17 increased increase VBN 36297 2202 18 perhaps perhaps RB 36297 2202 19 to to IN 36297 2202 20 more more JJR 36297 2202 21 than than IN 36297 2202 22 a a DT 36297 2202 23 thousand thousand CD 36297 2202 24 to to IN 36297 2202 25 one one CD 36297 2202 26 . . . 36297 2203 1 This this DT 36297 2203 2 demonstration demonstration NN 36297 2203 3 will will MD 36297 2203 4 be be VB 36297 2203 5 surprising surprising JJ 36297 2203 6 to to IN 36297 2203 7 anyone anyone NN 36297 2203 8 and and CC 36297 2203 9 will will MD 36297 2203 10 emphasize emphasize VB 36297 2203 11 a a DT 36297 2203 12 very very RB 36297 2203 13 important important JJ 36297 2203 14 point point NN 36297 2203 15 to to IN 36297 2203 16 the the DT 36297 2203 17 painter painter NN 36297 2203 18 . . . 36297 2204 1 The the DT 36297 2204 2 painter painter NN 36297 2204 3 has have VBZ 36297 2204 4 at at IN 36297 2204 5 his -PRON- PRP$ 36297 2204 6 disposal disposal NN 36297 2204 7 all all PDT 36297 2204 8 the the DT 36297 2204 9 scientific scientific JJ 36297 2204 10 facts fact NNS 36297 2204 11 of of IN 36297 2204 12 light light NN 36297 2204 13 , , , 36297 2204 14 color color NN 36297 2204 15 , , , 36297 2204 16 and and CC 36297 2204 17 vision vision NN 36297 2204 18 . . . 36297 2205 1 Many many JJ 36297 2205 2 of of IN 36297 2205 3 these these DT 36297 2205 4 have have VBP 36297 2205 5 been be VBN 36297 2205 6 presented present VBN 36297 2205 7 elsewhere,[9 elsewhere,[9 . 36297 2205 8 ] ] -RRB- 36297 2205 9 and and CC 36297 2205 10 those those DT 36297 2205 11 pertaining pertain VBG 36297 2205 12 to to IN 36297 2205 13 illusions illusion NNS 36297 2205 14 have have VBP 36297 2205 15 been be VBN 36297 2205 16 discussed discuss VBN 36297 2205 17 in in IN 36297 2205 18 preceding precede VBG 36297 2205 19 chapters chapter NNS 36297 2205 20 . . . 36297 2206 1 These these DT 36297 2206 2 need nee MD 36297 2206 3 not not RB 36297 2206 4 be be VB 36297 2206 5 repeated repeat VBN 36297 2206 6 here here RB 36297 2206 7 excepting except VBG 36297 2206 8 a a DT 36297 2206 9 few few JJ 36297 2206 10 for for IN 36297 2206 11 the the DT 36297 2206 12 purpose purpose NN 36297 2206 13 of of IN 36297 2206 14 reminding remind VBG 36297 2206 15 the the DT 36297 2206 16 reader reader NN 36297 2206 17 of of IN 36297 2206 18 the the DT 36297 2206 19 wealth wealth NN 36297 2206 20 of of IN 36297 2206 21 material material NN 36297 2206 22 available available JJ 36297 2206 23 to to IN 36297 2206 24 the the DT 36297 2206 25 painter painter NN 36297 2206 26 and and CC 36297 2206 27 decorator decorator NN 36297 2206 28 . . . 36297 2207 1 Many many JJ 36297 2207 2 tricks trick NNS 36297 2207 3 may may MD 36297 2207 4 be be VB 36297 2207 5 interjected interject VBN 36297 2207 6 into into IN 36297 2207 7 the the DT 36297 2207 8 foreground foreground NN 36297 2207 9 for for IN 36297 2207 10 their -PRON- PRP$ 36297 2207 11 effect effect NN 36297 2207 12 upon upon IN 36297 2207 13 the the DT 36297 2207 14 background background NN 36297 2207 15 and and CC 36297 2207 16 vice vice NN 36297 2207 17 versa versa RB 36297 2207 18 . . . 36297 2208 1 For for IN 36297 2208 2 example example NN 36297 2208 3 , , , 36297 2208 4 a a DT 36297 2208 5 branch branch NN 36297 2208 6 of of IN 36297 2208 7 a a DT 36297 2208 8 tree tree NN 36297 2208 9 drooping droop VBG 36297 2208 10 in in IN 36297 2208 11 the the DT 36297 2208 12 foreground foreground NN 36297 2208 13 apparently apparently RB 36297 2208 14 close close JJ 36297 2208 15 to to IN 36297 2208 16 the the DT 36297 2208 17 observer observer NN 36297 2208 18 , , , 36297 2208 19 if if IN 36297 2208 20 done do VBN 36297 2208 21 well well RB 36297 2208 22 , , , 36297 2208 23 will will MD 36297 2208 24 give give VB 36297 2208 25 a a DT 36297 2208 26 remarkable remarkable JJ 36297 2208 27 depth depth NN 36297 2208 28 to to IN 36297 2208 29 a a DT 36297 2208 30 painting painting NN 36297 2208 31 . . . 36297 2209 1 Modeling model VBG 36297 2209 2 of of IN 36297 2209 3 form form NN 36297 2209 4 may may MD 36297 2209 5 be be VB 36297 2209 6 effected effect VBN 36297 2209 7 to to IN 36297 2209 8 some some DT 36297 2209 9 extent extent NN 36297 2209 10 by by IN 36297 2209 11 a a DT 36297 2209 12 judicious judicious JJ 36297 2209 13 use use NN 36297 2209 14 of of IN 36297 2209 15 the the DT 36297 2209 16 " " `` 36297 2209 17 retiring retire VBG 36297 2209 18 " " '' 36297 2209 19 and and CC 36297 2209 20 " " `` 36297 2209 21 advancing advance VBG 36297 2209 22 " " '' 36297 2209 23 colors color NNS 36297 2209 24 . . . 36297 2210 1 This this DT 36297 2210 2 is be VBZ 36297 2210 3 one one CD 36297 2210 4 way way NN 36297 2210 5 to to TO 36297 2210 6 obtain obtain VB 36297 2210 7 the the DT 36297 2210 8 illusion illusion NN 36297 2210 9 of of IN 36297 2210 10 depth depth NN 36297 2210 11 . . . 36297 2211 1 After after IN 36297 2211 2 - - HYPH 36297 2211 3 images image NNS 36297 2211 4 play play VBP 36297 2211 5 many many JJ 36297 2211 6 subtle subtle JJ 36297 2211 7 parts part NNS 36297 2211 8 in in IN 36297 2211 9 painting painting NN 36297 2211 10 . . . 36297 2212 1 For for IN 36297 2212 2 example example NN 36297 2212 3 , , , 36297 2212 4 in in IN 36297 2212 5 a a DT 36297 2212 6 painting painting NN 36297 2212 7 where where WRB 36297 2212 8 a a DT 36297 2212 9 gray gray JJ 36297 2212 10 - - HYPH 36297 2212 11 blue blue JJ 36297 2212 12 sky sky NN 36297 2212 13 meets meet VBZ 36297 2212 14 the the DT 36297 2212 15 horizon horizon NN 36297 2212 16 of of IN 36297 2212 17 a a DT 36297 2212 18 blue blue JJ 36297 2212 19 - - HYPH 36297 2212 20 green green JJ 36297 2212 21 body body NN 36297 2212 22 of of IN 36297 2212 23 water water NN 36297 2212 24 , , , 36297 2212 25 the the DT 36297 2212 26 involuntary involuntary JJ 36297 2212 27 eye eye NN 36297 2212 28 - - HYPH 36297 2212 29 movements movement NNS 36297 2212 30 may may MD 36297 2212 31 produce produce VB 36297 2212 32 a a DT 36297 2212 33 pinkish pinkish JJ 36297 2212 34 line line NN 36297 2212 35 just just RB 36297 2212 36 above above IN 36297 2212 37 the the DT 36297 2212 38 horizon horizon NN 36297 2212 39 . . . 36297 2213 1 This this DT 36297 2213 2 is be VBZ 36297 2213 3 the the DT 36297 2213 4 after after IN 36297 2213 5 - - HYPH 36297 2213 6 image image NN 36297 2213 7 of of IN 36297 2213 8 the the DT 36297 2213 9 blue blue JJ 36297 2213 10 - - HYPH 36297 2213 11 green green JJ 36297 2213 12 water water NN 36297 2213 13 creeping creep VBG 36297 2213 14 upward upward RB 36297 2213 15 by by IN 36297 2213 16 eye eye NN 36297 2213 17 - - HYPH 36297 2213 18 movements movement NNS 36297 2213 19 . . . 36297 2214 1 Many many JJ 36297 2214 2 vivid vivid JJ 36297 2214 3 illusions illusion NNS 36297 2214 4 of of IN 36297 2214 5 this this DT 36297 2214 6 character character NN 36297 2214 7 may may MD 36297 2214 8 be be VB 36297 2214 9 deliberately deliberately RB 36297 2214 10 obtained obtain VBN 36297 2214 11 by by IN 36297 2214 12 the the DT 36297 2214 13 artist artist NN 36297 2214 14 . . . 36297 2215 1 Some some DT 36297 2215 2 of of IN 36297 2215 3 the the DT 36297 2215 4 peculiar peculiar JJ 36297 2215 5 restless restless JJ 36297 2215 6 effects effect NNS 36297 2215 7 obtained obtain VBN 36297 2215 8 in in IN 36297 2215 9 impressionistic impressionistic JJ 36297 2215 10 painting painting NN 36297 2215 11 ( ( -LRB- 36297 2215 12 stippling stippling NN 36297 2215 13 of of IN 36297 2215 14 small small JJ 36297 2215 15 areas area NNS 36297 2215 16 with with IN 36297 2215 17 relatively relatively RB 36297 2215 18 pure pure JJ 36297 2215 19 hues hue NNS 36297 2215 20 ) ) -RRB- 36297 2215 21 are be VBP 36297 2215 22 due due JJ 36297 2215 23 to to IN 36297 2215 24 contrasts contrast NNS 36297 2215 25 and and CC 36297 2215 26 after after IN 36297 2215 27 - - HYPH 36297 2215 28 images image NNS 36297 2215 29 . . . 36297 2216 1 A a DT 36297 2216 2 painting painting NN 36297 2216 3 came come VBD 36297 2216 4 to to IN 36297 2216 5 the the DT 36297 2216 6 author author NN 36297 2216 7 's 's POS 36297 2216 8 notice notice NN 36297 2216 9 in in IN 36297 2216 10 which which WDT 36297 2216 11 several several JJ 36297 2216 12 after after IN 36297 2216 13 - - HYPH 36297 2216 14 images image NNS 36297 2216 15 of of IN 36297 2216 16 the the DT 36297 2216 17 sun sun NN 36297 2216 18 , , , 36297 2216 19 besides besides IN 36297 2216 20 the the DT 36297 2216 21 image image NN 36297 2216 22 of of IN 36297 2216 23 the the DT 36297 2216 24 sun sun NN 36297 2216 25 itself -PRON- PRP 36297 2216 26 , , , 36297 2216 27 were be VBD 36297 2216 28 disposed dispose VBN 36297 2216 29 in in IN 36297 2216 30 various various JJ 36297 2216 31 positions position NNS 36297 2216 32 . . . 36297 2217 1 Their -PRON- PRP$ 36297 2217 2 colors color NNS 36297 2217 3 varied vary VBD 36297 2217 4 in in IN 36297 2217 5 the the DT 36297 2217 6 same same JJ 36297 2217 7 manner manner NN 36297 2217 8 as as IN 36297 2217 9 the the DT 36297 2217 10 after after IN 36297 2217 11 - - HYPH 36297 2217 12 image image NN 36297 2217 13 of of IN 36297 2217 14 the the DT 36297 2217 15 sun sun NN 36297 2217 16 . . . 36297 2218 1 Doubtless doubtless RB 36297 2218 2 the the DT 36297 2218 3 painter painter NN 36297 2218 4 strove strove NN 36297 2218 5 to to TO 36297 2218 6 give give VB 36297 2218 7 the the DT 36297 2218 8 impression impression NN 36297 2218 9 which which WDT 36297 2218 10 one one PRP 36297 2218 11 has have VBZ 36297 2218 12 on on IN 36297 2218 13 gazing gaze VBG 36297 2218 14 at at IN 36297 2218 15 the the DT 36297 2218 16 sun sun NN 36297 2218 17 . . . 36297 2219 1 Whether whether IN 36297 2219 2 or or CC 36297 2219 3 not not RB 36297 2219 4 this this DT 36297 2219 5 attempt attempt NN 36297 2219 6 was be VBD 36297 2219 7 successful successful JJ 36297 2219 8 does do VBZ 36297 2219 9 not not RB 36297 2219 10 matter matter VB 36297 2219 11 but but CC 36297 2219 12 it -PRON- PRP 36297 2219 13 was be VBD 36297 2219 14 gratifying gratify VBG 36297 2219 15 to to TO 36297 2219 16 see see VB 36297 2219 17 the the DT 36297 2219 18 attempt attempt NN 36297 2219 19 made make VBN 36297 2219 20 . . . 36297 2220 1 There there EX 36297 2220 2 are be VBP 36297 2220 3 many many JJ 36297 2220 4 interesting interesting JJ 36297 2220 5 effects effect NNS 36297 2220 6 obtainable obtainable JJ 36297 2220 7 by by IN 36297 2220 8 judicious judicious JJ 36297 2220 9 experimentation experimentation NN 36297 2220 10 . . . 36297 2221 1 For for IN 36297 2221 2 example example NN 36297 2221 3 , , , 36297 2221 4 if if IN 36297 2221 5 a a DT 36297 2221 6 gray gray JJ 36297 2221 7 medium medium NN 36297 2221 8 be be VB 36297 2221 9 sprayed spray VBN 36297 2221 10 upon upon IN 36297 2221 11 a a DT 36297 2221 12 landscape landscape NN 36297 2221 13 in in IN 36297 2221 14 such such PDT 36297 2221 15 a a DT 36297 2221 16 manner manner NN 36297 2221 17 that that IN 36297 2221 18 the the DT 36297 2221 19 material material NN 36297 2221 20 dries dry NNS 36297 2221 21 in in IN 36297 2221 22 a a DT 36297 2221 23 very very RB 36297 2221 24 rough rough JJ 36297 2221 25 or or CC 36297 2221 26 diffusing diffuse VBG 36297 2221 27 surface surface NN 36297 2221 28 some some DT 36297 2221 29 remarkable remarkable JJ 36297 2221 30 effects effect NNS 36297 2221 31 of of IN 36297 2221 32 fog fog NN 36297 2221 33 and and CC 36297 2221 34 haze haze NN 36297 2221 35 may may MD 36297 2221 36 be be VB 36297 2221 37 produced produce VBN 36297 2221 38 . . . 36297 2222 1 While while IN 36297 2222 2 experimenting experiment VBG 36297 2222 3 in in IN 36297 2222 4 this this DT 36297 2222 5 manner manner NN 36297 2222 6 a a DT 36297 2222 7 very very RB 36297 2222 8 finely finely RB 36297 2222 9 etched etch VBN 36297 2222 10 clear clear JJ 36297 2222 11 glass glass NN 36297 2222 12 was be VBD 36297 2222 13 placed place VBN 36297 2222 14 over over IN 36297 2222 15 a a DT 36297 2222 16 landscape landscape NN 36297 2222 17 and and CC 36297 2222 18 the the DT 36297 2222 19 combined combine VBN 36297 2222 20 effect effect NN 36297 2222 21 of of IN 36297 2222 22 diffusely diffusely RB 36297 2222 23 reflected reflect VBN 36297 2222 24 light light NN 36297 2222 25 and and CC 36297 2222 26 of of IN 36297 2222 27 the the DT 36297 2222 28 slight slight JJ 36297 2222 29 blurring blurring NN 36297 2222 30 was be VBD 36297 2222 31 remarkable remarkable JJ 36297 2222 32 . . . 36297 2223 1 By by IN 36297 2223 2 separating separate VBG 36297 2223 3 the the DT 36297 2223 4 etched etched JJ 36297 2223 5 glass glass NN 36297 2223 6 from from IN 36297 2223 7 the the DT 36297 2223 8 painting painting NN 36297 2223 9 a a DT 36297 2223 10 slight slight JJ 36297 2223 11 distance distance NN 36297 2223 12 , , , 36297 2223 13 a a DT 36297 2223 14 very very RB 36297 2223 15 good good JJ 36297 2223 16 imitation imitation NN 36297 2223 17 " " '' 36297 2223 18 porcelain porcelain NN 36297 2223 19 " " '' 36297 2223 20 was be VBD 36297 2223 21 produced produce VBN 36297 2223 22 . . . 36297 2224 1 The the DT 36297 2224 2 optical optical JJ 36297 2224 3 properties property NNS 36297 2224 4 of of IN 36297 2224 5 varnishes varnish NNS 36297 2224 6 vary vary VBP 36297 2224 7 and and CC 36297 2224 8 their -PRON- PRP$ 36297 2224 9 effect effect NN 36297 2224 10 varies vary VBZ 36297 2224 11 considerably considerably RB 36297 2224 12 , , , 36297 2224 13 depending depend VBG 36297 2224 14 upon upon IN 36297 2224 15 the the DT 36297 2224 16 mode mode NN 36297 2224 17 of of IN 36297 2224 18 application application NN 36297 2224 19 . . . 36297 2225 1 These these DT 36297 2225 2 and and CC 36297 2225 3 many many JJ 36297 2225 4 other other JJ 36297 2225 5 details detail NNS 36297 2225 6 are be VBP 36297 2225 7 available available JJ 36297 2225 8 to to IN 36297 2225 9 the the DT 36297 2225 10 painter painter NN 36297 2225 11 and and CC 36297 2225 12 decorator decorator NN 36297 2225 13 . . . 36297 2226 1 An an DT 36297 2226 2 interesting interesting JJ 36297 2226 3 example example NN 36297 2226 4 among among IN 36297 2226 5 many many JJ 36297 2226 6 is be VBZ 36297 2226 7 a a DT 36297 2226 8 cellulose cellulose NN 36297 2226 9 lacquer lacquer NN 36297 2226 10 dyed dye VBN 36297 2226 11 with with IN 36297 2226 12 an an DT 36297 2226 13 ordinary ordinary JJ 36297 2226 14 yellow yellow JJ 36297 2226 15 dye dye NN 36297 2226 16 . . . 36297 2227 1 The the DT 36297 2227 2 solution solution NN 36297 2227 3 appears appear VBZ 36297 2227 4 yellow yellow JJ 36297 2227 5 by by IN 36297 2227 6 transmitted transmit VBN 36297 2227 7 light light NN 36297 2227 8 or or CC 36297 2227 9 it -PRON- PRP 36297 2227 10 will will MD 36297 2227 11 color color VB 36297 2227 12 a a DT 36297 2227 13 surface surface NN 36297 2227 14 yellow yellow NN 36297 2227 15 . . . 36297 2228 1 By by IN 36297 2228 2 spraying spray VBG 36297 2228 3 this this DT 36297 2228 4 solution solution NN 36297 2228 5 on on IN 36297 2228 6 a a DT 36297 2228 7 metallic metallic JJ 36297 2228 8 object object NN 36297 2228 9 such such JJ 36297 2228 10 as as IN 36297 2228 11 a a DT 36297 2228 12 nickel nickel NN 36297 2228 13 - - HYPH 36297 2228 14 plated plate VBN 36297 2228 15 piece piece NN 36297 2228 16 , , , 36297 2228 17 in in IN 36297 2228 18 a a DT 36297 2228 19 manner manner NN 36297 2228 20 that that WDT 36297 2228 21 leaves leave VBZ 36297 2228 22 the the DT 36297 2228 23 medium medium NN 36297 2228 24 rough rough JJ 36297 2228 25 or or CC 36297 2228 26 diffusing diffusing JJ 36297 2228 27 , , , 36297 2228 28 the the DT 36297 2228 29 effect effect NN 36297 2228 30 is be VBZ 36297 2228 31 no no RB 36297 2228 32 longer long RBR 36297 2228 33 merely merely RB 36297 2228 34 a a DT 36297 2228 35 yellow yellow NN 36297 2228 36 but but CC 36297 2228 37 a a DT 36297 2228 38 remarkable remarkable JJ 36297 2228 39 lustre lustre NN 36297 2228 40 resembling resembling NN 36297 2228 41 gilt gilt NN 36297 2228 42 . . . 36297 2229 1 Quite quite RB 36297 2229 2 in in IN 36297 2229 3 the the DT 36297 2229 4 same same JJ 36297 2229 5 manner manner NN 36297 2229 6 many many JJ 36297 2229 7 effects effect NNS 36297 2229 8 of of IN 36297 2229 9 richness richness NN 36297 2229 10 , , , 36297 2229 11 depth depth NN 36297 2229 12 of of IN 36297 2229 13 color color NN 36297 2229 14 , , , 36297 2229 15 haziness haziness NN 36297 2229 16 , , , 36297 2229 17 etc etc FW 36297 2229 18 . . . 36297 2229 19 , , , 36297 2229 20 are be VBP 36297 2229 21 obtainable obtainable JJ 36297 2229 22 by by IN 36297 2229 23 the the DT 36297 2229 24 artist artist NN 36297 2229 25 who who WP 36297 2229 26 is be VBZ 36297 2229 27 striving strive VBG 36297 2229 28 to to TO 36297 2229 29 produce produce VB 36297 2229 30 a a DT 36297 2229 31 great great JJ 36297 2229 32 illusion illusion NN 36297 2229 33 . . . 36297 2230 1 All all PDT 36297 2230 2 the the DT 36297 2230 3 means mean NNS 36297 2230 4 for for IN 36297 2230 5 success success NN 36297 2230 6 which which WDT 36297 2230 7 the the DT 36297 2230 8 painter painter NN 36297 2230 9 possesses possesse NNS 36297 2230 10 are be VBP 36297 2230 11 also also RB 36297 2230 12 available available JJ 36297 2230 13 to to IN 36297 2230 14 the the DT 36297 2230 15 decorator decorator NN 36297 2230 16 ; ; : 36297 2230 17 however however RB 36297 2230 18 , , , 36297 2230 19 the the DT 36297 2230 20 latter latter JJ 36297 2230 21 may may MD 36297 2230 22 utilize utilize VB 36297 2230 23 some some DT 36297 2230 24 of of IN 36297 2230 25 the the DT 36297 2230 26 illusions illusion NNS 36297 2230 27 of of IN 36297 2230 28 line line NN 36297 2230 29 , , , 36297 2230 30 form form NN 36297 2230 31 , , , 36297 2230 32 irradiation irradiation NN 36297 2230 33 , , , 36297 2230 34 etc etc FW 36297 2230 35 . . FW 36297 2230 36 , , , 36297 2230 37 which which WDT 36297 2230 38 the the DT 36297 2230 39 architect architect NN 36297 2230 40 encounters encounter VBZ 36297 2230 41 . . . 36297 2231 1 The the DT 36297 2231 2 decorator decorator NN 36297 2231 3 's 's POS 36297 2231 4 field field NN 36297 2231 5 may may MD 36297 2231 6 be be VB 36297 2231 7 considered consider VBN 36297 2231 8 to to TO 36297 2231 9 include include VB 36297 2231 10 almost almost RB 36297 2231 11 all all DT 36297 2231 12 of of IN 36297 2231 13 the the DT 36297 2231 14 painter painter NN 36297 2231 15 's 's POS 36297 2231 16 and and CC 36297 2231 17 much much JJ 36297 2231 18 of of IN 36297 2231 19 the the DT 36297 2231 20 architect architect NN 36297 2231 21 's 's POS 36297 2231 22 . . . 36297 2232 1 This this DT 36297 2232 2 being be VBG 36297 2232 3 the the DT 36297 2232 4 case case NN 36297 2232 5 , , , 36297 2232 6 little little JJ 36297 2232 7 space space NN 36297 2232 8 will will MD 36297 2232 9 be be VB 36297 2232 10 given give VBN 36297 2232 11 to to IN 36297 2232 12 this this DT 36297 2232 13 phase phase NN 36297 2232 14 of of IN 36297 2232 15 the the DT 36297 2232 16 subject subject NN 36297 2232 17 because because IN 36297 2232 18 painting painting NN 36297 2232 19 and and CC 36297 2232 20 architecture architecture NN 36297 2232 21 are be VBP 36297 2232 22 separately separately RB 36297 2232 23 treated treat VBN 36297 2232 24 . . . 36297 2233 1 The the DT 36297 2233 2 decorator decorator NN 36297 2233 3 should should MD 36297 2233 4 begin begin VB 36297 2233 5 to to TO 36297 2233 6 realize realize VB 36297 2233 7 more more RBR 36297 2233 8 fully fully RB 36297 2233 9 the the DT 36297 2233 10 great great JJ 36297 2233 11 potentiality potentiality NN 36297 2233 12 of of IN 36297 2233 13 lighting lighting NN 36297 2233 14 in in IN 36297 2233 15 creating create VBG 36297 2233 16 moods mood NNS 36297 2233 17 or or CC 36297 2233 18 in in IN 36297 2233 19 giving give VBG 36297 2233 20 expression expression NN 36297 2233 21 to to IN 36297 2233 22 an an DT 36297 2233 23 interior interior NN 36297 2233 24 . . . 36297 2234 1 The the DT 36297 2234 2 psychology psychology NN 36297 2234 3 of of IN 36297 2234 4 light light NN 36297 2234 5 and and CC 36297 2234 6 the the DT 36297 2234 7 use use NN 36297 2234 8 of of IN 36297 2234 9 lighting lighting NN 36297 2234 10 as as IN 36297 2234 11 a a DT 36297 2234 12 mode mode NN 36297 2234 13 of of IN 36297 2234 14 expression expression NN 36297 2234 15 have have VBP 36297 2234 16 barely barely RB 36297 2234 17 been be VBN 36297 2234 18 drawn draw VBN 36297 2234 19 upon upon IN 36297 2234 20 by by IN 36297 2234 21 the the DT 36297 2234 22 decorator decorator NN 36297 2234 23 . . . 36297 2235 1 Lighting lighting NN 36297 2235 2 has have VBZ 36297 2235 3 already already RB 36297 2235 4 been be VBN 36297 2235 5 discussed discuss VBN 36297 2235 6 so so IN 36297 2235 7 it -PRON- PRP 36297 2235 8 will will MD 36297 2235 9 be be VB 36297 2235 10 passed pass VBN 36297 2235 11 by by RP 36297 2235 12 at at IN 36297 2235 13 this this DT 36297 2235 14 point point NN 36297 2235 15 . . . 36297 2236 1 The the DT 36297 2236 2 practice practice NN 36297 2236 3 of of IN 36297 2236 4 hanging hang VBG 36297 2236 5 pictures picture NNS 36297 2236 6 on on IN 36297 2236 7 walls wall NNS 36297 2236 8 which which WDT 36297 2236 9 are be VBP 36297 2236 10 brilliantly brilliantly RB 36297 2236 11 colored color VBN 36297 2236 12 is be VBZ 36297 2236 13 open open JJ 36297 2236 14 to to IN 36297 2236 15 criticism criticism NN 36297 2236 16 . . . 36297 2237 1 There there EX 36297 2237 2 are be VBP 36297 2237 3 galleries gallery NNS 36297 2237 4 in in IN 36297 2237 5 existence existence NN 36297 2237 6 where where WRB 36297 2237 7 paintings painting NNS 36297 2237 8 are be VBP 36297 2237 9 hung hang VBN 36297 2237 10 on on IN 36297 2237 11 brilliant brilliant JJ 36297 2237 12 green green NN 36297 2237 13 or or CC 36297 2237 14 rose rise VBD 36297 2237 15 walls wall NNS 36297 2237 16 . . . 36297 2238 1 The the DT 36297 2238 2 changes change NNS 36297 2238 3 in in IN 36297 2238 4 the the DT 36297 2238 5 appearance appearance NN 36297 2238 6 of of IN 36297 2238 7 the the DT 36297 2238 8 object object NN 36297 2238 9 due due IN 36297 2238 10 to to IN 36297 2238 11 these these DT 36297 2238 12 highly highly RB 36297 2238 13 colored color VBN 36297 2238 14 environments environment NNS 36297 2238 15 are be VBP 36297 2238 16 easily easily RB 36297 2238 17 demonstrated demonstrate VBN 36297 2238 18 by by IN 36297 2238 19 viewing view VBG 36297 2238 20 a a DT 36297 2238 21 piece piece NN 36297 2238 22 of of IN 36297 2238 23 white white JJ 36297 2238 24 paper paper NN 36297 2238 25 pinned pin VBN 36297 2238 26 upon upon IN 36297 2238 27 the the DT 36297 2238 28 wall wall NN 36297 2238 29 . . . 36297 2239 1 On on IN 36297 2239 2 the the DT 36297 2239 3 green green JJ 36297 2239 4 wall wall NN 36297 2239 5 , , , 36297 2239 6 the the DT 36297 2239 7 white white NNP 36297 2239 8 paper paper NNP 36297 2239 9 appears appear VBZ 36297 2239 10 pinkish pinkish NNP 36297 2239 11 ; ; : 36297 2239 12 on on IN 36297 2239 13 the the DT 36297 2239 14 rose rose NN 36297 2239 15 wall wall NN 36297 2239 16 , , , 36297 2239 17 it -PRON- PRP 36297 2239 18 appears appear VBZ 36297 2239 19 bluish bluish JJ 36297 2239 20 or or CC 36297 2239 21 greenish greenish JJ 36297 2239 22 . . . 36297 2240 1 A a DT 36297 2240 2 portrait portrait NN 36297 2240 3 or or CC 36297 2240 4 a a DT 36297 2240 5 picture picture NN 36297 2240 6 in in IN 36297 2240 7 which which WDT 36297 2240 8 there there EX 36297 2240 9 are be VBP 36297 2240 10 areas area NNS 36297 2240 11 of of IN 36297 2240 12 white white JJ 36297 2240 13 or or CC 36297 2240 14 delicate delicate JJ 36297 2240 15 tints tint NNS 36297 2240 16 is be VBZ 36297 2240 17 subject subject JJ 36297 2240 18 to to IN 36297 2240 19 considerable considerable JJ 36297 2240 20 distortions distortion NNS 36297 2240 21 in in IN 36297 2240 22 the the DT 36297 2240 23 appearance appearance NN 36297 2240 24 of of IN 36297 2240 25 its -PRON- PRP$ 36297 2240 26 colors color NNS 36297 2240 27 . . . 36297 2241 1 Similarly similarly RB 36297 2241 2 , , , 36297 2241 3 if if IN 36297 2241 4 a a DT 36297 2241 5 woman woman NN 36297 2241 6 must must MD 36297 2241 7 have have VB 36297 2241 8 a a DT 36297 2241 9 colored colored JJ 36297 2241 10 background background NN 36297 2241 11 , , , 36297 2241 12 it -PRON- PRP 36297 2241 13 is be VBZ 36297 2241 14 well well JJ 36297 2241 15 to to TO 36297 2241 16 choose choose VB 36297 2241 17 one one CD 36297 2241 18 which which WDT 36297 2241 19 will will MD 36297 2241 20 induce induce VB 36297 2241 21 the the DT 36297 2241 22 more more RBR 36297 2241 23 desirable desirable JJ 36297 2241 24 tints tint NNS 36297 2241 25 in in IN 36297 2241 26 her -PRON- PRP$ 36297 2241 27 appearance appearance NN 36297 2241 28 . . . 36297 2242 1 The the DT 36297 2242 2 designer designer NN 36297 2242 3 of of IN 36297 2242 4 gowns gown NNS 36297 2242 5 certainly certainly RB 36297 2242 6 must must MD 36297 2242 7 recognize recognize VB 36297 2242 8 these these DT 36297 2242 9 illusions illusion NNS 36297 2242 10 of of IN 36297 2242 11 color color NN 36297 2242 12 which which WDT 36297 2242 13 may may MD 36297 2242 14 be be VB 36297 2242 15 desirable desirable JJ 36297 2242 16 or or CC 36297 2242 17 undesirable undesirable JJ 36297 2242 18 . . . 36297 2243 1 The the DT 36297 2243 2 lighting lighting NN 36297 2243 3 of of IN 36297 2243 4 a a DT 36297 2243 5 picture picture NN 36297 2243 6 has have VBZ 36297 2243 7 already already RB 36297 2243 8 been be VBN 36297 2243 9 mentioned mention VBN 36297 2243 10 , , , 36297 2243 11 but but CC 36297 2243 12 the the DT 36297 2243 13 discussion discussion NN 36297 2243 14 was be VBD 36297 2243 15 confined confine VBN 36297 2243 16 solely solely RB 36297 2243 17 to to IN 36297 2243 18 distribution distribution NN 36297 2243 19 of of IN 36297 2243 20 light light NN 36297 2243 21 . . . 36297 2244 1 The the DT 36297 2244 2 quality quality NN 36297 2244 3 of of IN 36297 2244 4 the the DT 36297 2244 5 light light NN 36297 2244 6 ( ( -LRB- 36297 2244 7 its -PRON- PRP$ 36297 2244 8 spectral spectral JJ 36297 2244 9 character character NN 36297 2244 10 ) ) -RRB- 36297 2244 11 may may MD 36297 2244 12 have have VB 36297 2244 13 an an DT 36297 2244 14 enormous enormous JJ 36297 2244 15 influence influence NN 36297 2244 16 upon upon IN 36297 2244 17 the the DT 36297 2244 18 painting painting NN 36297 2244 19 . . . 36297 2245 1 In in IN 36297 2245 2 fact fact NN 36297 2245 3 with with IN 36297 2245 4 the the DT 36297 2245 5 same same JJ 36297 2245 6 painting painting NN 36297 2245 7 many many JJ 36297 2245 8 illusions illusion NNS 36297 2245 9 may may MD 36297 2245 10 be be VB 36297 2245 11 produced produce VBN 36297 2245 12 by by IN 36297 2245 13 lighting lighting NN 36297 2245 14 . . . 36297 2246 1 In in IN 36297 2246 2 general general JJ 36297 2246 3 , , , 36297 2246 4 paintings painting NNS 36297 2246 5 are be VBP 36297 2246 6 painted paint VBN 36297 2246 7 in in IN 36297 2246 8 daylight daylight NN 36297 2246 9 and and CC 36297 2246 10 they -PRON- PRP 36297 2246 11 are be VBP 36297 2246 12 not not RB 36297 2246 13 the the DT 36297 2246 14 same same JJ 36297 2246 15 in in IN 36297 2246 16 appearance appearance NN 36297 2246 17 under under IN 36297 2246 18 ordinary ordinary JJ 36297 2246 19 artificial artificial JJ 36297 2246 20 light light NN 36297 2246 21 . . . 36297 2247 1 For for IN 36297 2247 2 this this DT 36297 2247 3 reason reason NN 36297 2247 4 the the DT 36297 2247 5 artist artist NN 36297 2247 6 is be VBZ 36297 2247 7 usually usually RB 36297 2247 8 entitled entitle VBN 36297 2247 9 to to IN 36297 2247 10 the the DT 36297 2247 11 preservation preservation NN 36297 2247 12 of of IN 36297 2247 13 the the DT 36297 2247 14 illusion illusion NN 36297 2247 15 as as IN 36297 2247 16 he -PRON- PRP 36297 2247 17 completed complete VBD 36297 2247 18 it -PRON- PRP 36297 2247 19 . . . 36297 2248 1 By by IN 36297 2248 2 using use VBG 36297 2248 3 artificial artificial JJ 36297 2248 4 daylight daylight NN 36297 2248 5 which which WDT 36297 2248 6 has have VBZ 36297 2248 7 been be VBN 36297 2248 8 available available JJ 36297 2248 9 for for IN 36297 2248 10 some some DT 36297 2248 11 years year NNS 36297 2248 12 , , , 36297 2248 13 the the DT 36297 2248 14 painting painting NN 36297 2248 15 appears appear VBZ 36297 2248 16 as as IN 36297 2248 17 the the DT 36297 2248 18 artist artist NN 36297 2248 19 gave give VBD 36297 2248 20 it -PRON- PRP 36297 2248 21 his -PRON- PRP$ 36297 2248 22 last last JJ 36297 2248 23 touch touch NN 36297 2248 24 . . . 36297 2249 1 Of of RB 36297 2249 2 course course RB 36297 2249 3 , , , 36297 2249 4 it -PRON- PRP 36297 2249 5 is be VBZ 36297 2249 6 quite quite RB 36297 2249 7 legitimate legitimate JJ 36297 2249 8 to to TO 36297 2249 9 vary vary VB 36297 2249 10 the the DT 36297 2249 11 quality quality NN 36297 2249 12 of of IN 36297 2249 13 light light NN 36297 2249 14 in in IN 36297 2249 15 case case NN 36297 2249 16 the the DT 36297 2249 17 owner owner NN 36297 2249 18 desires desire VBZ 36297 2249 19 to to TO 36297 2249 20 do do VB 36297 2249 21 so so RB 36297 2249 22 , , , 36297 2249 23 but but CC 36297 2249 24 the the DT 36297 2249 25 purpose purpose NN 36297 2249 26 here here RB 36297 2249 27 is be VBZ 36297 2249 28 to to TO 36297 2249 29 emphasize emphasize VB 36297 2249 30 the the DT 36297 2249 31 fact fact NN 36297 2249 32 that that IN 36297 2249 33 the the DT 36297 2249 34 quality quality NN 36297 2249 35 of of IN 36297 2249 36 light light NN 36297 2249 37 is be VBZ 36297 2249 38 a a DT 36297 2249 39 powerful powerful JJ 36297 2249 40 influence influence NN 36297 2249 41 upon upon IN 36297 2249 42 the the DT 36297 2249 43 appearance appearance NN 36297 2249 44 of of IN 36297 2249 45 the the DT 36297 2249 46 painting painting NN 36297 2249 47 . . . 36297 2250 1 The the DT 36297 2250 2 influence influence NN 36297 2250 3 is be VBZ 36297 2250 4 not not RB 36297 2250 5 generally generally RB 36297 2250 6 enough enough RB 36297 2250 7 recognized recognize VBN 36297 2250 8 and and CC 36297 2250 9 its -PRON- PRP$ 36297 2250 10 magnitude magnitude NN 36297 2250 11 is be VBZ 36297 2250 12 appreciated appreciate VBN 36297 2250 13 by by IN 36297 2250 14 relatively relatively RB 36297 2250 15 few few JJ 36297 2250 16 persons person NNS 36297 2250 17 . . . 36297 2251 1 All all DT 36297 2251 2 other other JJ 36297 2251 3 considerations consideration NNS 36297 2251 4 aside aside RB 36297 2251 5 , , , 36297 2251 6 a a DT 36297 2251 7 painting painting NN 36297 2251 8 is be VBZ 36297 2251 9 best best RB 36297 2251 10 hung hang VBN 36297 2251 11 upon upon IN 36297 2251 12 a a DT 36297 2251 13 colorless colorless JJ 36297 2251 14 background background NN 36297 2251 15 and and CC 36297 2251 16 black black JJ 36297 2251 17 velvet velvet NNS 36297 2251 18 for for IN 36297 2251 19 this this DT 36297 2251 20 purpose purpose NN 36297 2251 21 yields yield NNS 36297 2251 22 remarkable remarkable JJ 36297 2251 23 results result NNS 36297 2251 24 . . . 36297 2252 1 Gray gray JJ 36297 2252 2 velvet velvet NN 36297 2252 3 is be VBZ 36297 2252 4 better well JJR 36297 2252 5 , , , 36297 2252 6 when when WRB 36297 2252 7 the the DT 36297 2252 8 appearance appearance NN 36297 2252 9 of of IN 36297 2252 10 the the DT 36297 2252 11 room room NN 36297 2252 12 is be VBZ 36297 2252 13 taken take VBN 36297 2252 14 into into IN 36297 2252 15 consideration consideration NN 36297 2252 16 , , , 36297 2252 17 as as IN 36297 2252 18 it -PRON- PRP 36297 2252 19 must must MD 36297 2252 20 be be VB 36297 2252 21 . . . 36297 2253 1 However however RB 36297 2253 2 , , , 36297 2253 3 the the DT 36297 2253 4 influence influence NN 36297 2253 5 of of IN 36297 2253 6 dark dark JJ 36297 2253 7 surroundings surrounding NNS 36297 2253 8 toward toward IN 36297 2253 9 enhancing enhance VBG 36297 2253 10 the the DT 36297 2253 11 illusion illusion NN 36297 2253 12 is be VBZ 36297 2253 13 well well RB 36297 2253 14 worth worth JJ 36297 2253 15 recognizing recognize VBG 36297 2253 16 . . . 36297 2254 1 In in IN 36297 2254 2 the the DT 36297 2254 3 case case NN 36297 2254 4 of of IN 36297 2254 5 a a DT 36297 2254 6 special special JJ 36297 2254 7 picture picture NN 36297 2254 8 or or CC 36297 2254 9 a a DT 36297 2254 10 special special JJ 36297 2254 11 occasion occasion NN 36297 2254 12 , , , 36297 2254 13 a a DT 36297 2254 14 painting painting NN 36297 2254 15 may may MD 36297 2254 16 be be VB 36297 2254 17 exhibited exhibit VBN 36297 2254 18 in in IN 36297 2254 19 a a DT 36297 2254 20 booth booth NN 36297 2254 21 -- -- : 36297 2254 22 a a DT 36297 2254 23 huge huge JJ 36297 2254 24 shadow shadow NN 36297 2254 25 - - HYPH 36297 2254 26 box box NN 36297 2254 27 not not RB 36297 2254 28 unlike unlike IN 36297 2254 29 a a DT 36297 2254 30 show show NN 36297 2254 31 - - HYPH 36297 2254 32 window window NN 36297 2254 33 in in IN 36297 2254 34 which which WDT 36297 2254 35 the the DT 36297 2254 36 light light NN 36297 2254 37 - - HYPH 36297 2254 38 sources source NNS 36297 2254 39 are be VBP 36297 2254 40 concealed conceal VBN 36297 2254 41 . . . 36297 2255 1 Such such JJ 36297 2255 2 experiments experiment NNS 36297 2255 3 yield yield VBP 36297 2255 4 many many JJ 36297 2255 5 interesting interesting JJ 36297 2255 6 data datum NNS 36297 2255 7 pertaining pertain VBG 36297 2255 8 to to IN 36297 2255 9 the the DT 36297 2255 10 illusions illusion NNS 36297 2255 11 which which WDT 36297 2255 12 the the DT 36297 2255 13 painter painter NN 36297 2255 14 strives strive VBZ 36297 2255 15 to to TO 36297 2255 16 obtain obtain VB 36297 2255 17 . . . 36297 2256 1 [ [ -LRB- 36297 2256 2 Illustration illustration NN 36297 2256 3 : : : 36297 2256 4 Fig Fig NNP 36297 2256 5 . . . 36297 2257 1 82.--Illustrating 82.--illustrating CD 36297 2257 2 the the DT 36297 2257 3 apparent apparent JJ 36297 2257 4 distortion distortion NN 36297 2257 5 of of IN 36297 2257 6 a a DT 36297 2257 7 picture picture NN 36297 2257 8 frame frame NN 36297 2257 9 in in IN 36297 2257 10 which which WDT 36297 2257 11 the the DT 36297 2257 12 grain grain NN 36297 2257 13 of of IN 36297 2257 14 the the DT 36297 2257 15 wood wood NN 36297 2257 16 is be VBZ 36297 2257 17 visible visible JJ 36297 2257 18 . . . 36297 2257 19 ] ] -RRB- 36297 2258 1 Incidentally incidentally RB 36297 2258 2 on on IN 36297 2258 3 viewing view VBG 36297 2258 4 some some DT 36297 2258 5 picture picture NN 36297 2258 6 frames frame NNS 36297 2258 7 in in IN 36297 2258 8 which which WDT 36297 2258 9 the the DT 36297 2258 10 grain grain NN 36297 2258 11 of of IN 36297 2258 12 the the DT 36297 2258 13 wood wood NN 36297 2258 14 was be VBD 36297 2258 15 noticeable noticeable JJ 36297 2258 16 , , , 36297 2258 17 the the DT 36297 2258 18 frames frame NNS 36297 2258 19 did do VBD 36297 2258 20 not not RB 36297 2258 21 appear appear VB 36297 2258 22 to to TO 36297 2258 23 be be VB 36297 2258 24 strictly strictly RB 36297 2258 25 rectangular rectangular JJ 36297 2258 26 . . . 36297 2259 1 The the DT 36297 2259 2 illusions illusion NNS 36297 2259 3 were be VBD 36297 2259 4 so so RB 36297 2259 5 strong strong JJ 36297 2259 6 that that IN 36297 2259 7 only only RB 36297 2259 8 by by IN 36297 2259 9 measuring measure VBG 36297 2259 10 the the DT 36297 2259 11 frames frame NNS 36297 2259 12 could could MD 36297 2259 13 one one CD 36297 2259 14 be be VB 36297 2259 15 convinced convince VBN 36297 2259 16 that that IN 36297 2259 17 they -PRON- PRP 36297 2259 18 were be VBD 36297 2259 19 truly truly RB 36297 2259 20 rectangular rectangular JJ 36297 2259 21 and and CC 36297 2259 22 possessed possessed JJ 36297 2259 23 straight straight JJ 36297 2259 24 sides side NNS 36297 2259 25 . . . 36297 2260 1 Two two CD 36297 2260 2 of of IN 36297 2260 3 these these DT 36297 2260 4 are be VBP 36297 2260 5 represented represent VBN 36297 2260 6 in in IN 36297 2260 7 Figs Figs NNP 36297 2260 8 . . . 36297 2261 1 82 82 CD 36297 2261 2 and and CC 36297 2261 3 83 83 CD 36297 2261 4 . . . 36297 2262 1 In in IN 36297 2262 2 the the DT 36297 2262 3 former former JJ 36297 2262 4 , , , 36297 2262 5 the the DT 36297 2262 6 horizontal horizontal JJ 36297 2262 7 sides side NNS 36297 2262 8 appear appear VBP 36297 2262 9 bent bent JJ 36297 2262 10 upward upward RB 36297 2262 11 in in IN 36297 2262 12 the the DT 36297 2262 13 middle middle NN 36297 2262 14 and and CC 36297 2262 15 the the DT 36297 2262 16 two two CD 36297 2262 17 vertical vertical JJ 36297 2262 18 sides side NNS 36297 2262 19 appear appear VBP 36297 2262 20 bowed bow VBN 36297 2262 21 toward toward IN 36297 2262 22 the the DT 36297 2262 23 right right NN 36297 2262 24 . . . 36297 2263 1 In in IN 36297 2263 2 Fig Fig NNP 36297 2263 3 . . . 36297 2264 1 83 83 CD 36297 2264 2 , , , 36297 2264 3 the the DT 36297 2264 4 frame frame NN 36297 2264 5 appears appear VBZ 36297 2264 6 considerably considerably RB 36297 2264 7 narrower narrow JJR 36297 2264 8 at at IN 36297 2264 9 the the DT 36297 2264 10 left left JJ 36297 2264 11 end end NN 36297 2264 12 than than IN 36297 2264 13 at at IN 36297 2264 14 the the DT 36297 2264 15 right right NN 36297 2264 16 . . . 36297 2265 1 Both both DT 36297 2265 2 these these DT 36297 2265 3 frames frame NNS 36297 2265 4 were be VBD 36297 2265 5 represented represent VBN 36297 2265 6 in in IN 36297 2265 7 the the DT 36297 2265 8 original original JJ 36297 2265 9 drawings drawing NNS 36297 2265 10 by by IN 36297 2265 11 true true JJ 36297 2265 12 rectangles rectangle NNS 36297 2265 13 . . . 36297 2266 1 Many many JJ 36297 2266 2 illusions illusion NNS 36297 2266 3 are be VBP 36297 2266 4 to to TO 36297 2266 5 be be VB 36297 2266 6 seen see VBN 36297 2266 7 in in IN 36297 2266 8 furniture furniture NN 36297 2266 9 and and CC 36297 2266 10 in in IN 36297 2266 11 other other JJ 36297 2266 12 woodwork woodwork NN 36297 2266 13 in in IN 36297 2266 14 which which WDT 36297 2266 15 the the DT 36297 2266 16 grain grain NN 36297 2266 17 is be VBZ 36297 2266 18 conspicuous conspicuous JJ 36297 2266 19 . . . 36297 2267 1 This this DT 36297 2267 2 appears appear VBZ 36297 2267 3 to to IN 36297 2267 4 the the DT 36297 2267 5 author author NN 36297 2267 6 to to TO 36297 2267 7 be be VB 36297 2267 8 an an DT 36297 2267 9 objection objection NN 36297 2267 10 in in IN 36297 2267 11 general general JJ 36297 2267 12 to to IN 36297 2267 13 this this DT 36297 2267 14 kind kind NN 36297 2267 15 of of IN 36297 2267 16 finish finish NN 36297 2267 17 . . . 36297 2268 1 In in IN 36297 2268 2 Fig Fig NNP 36297 2268 3 . . . 36297 2269 1 84 84 CD 36297 2269 2 there there EX 36297 2269 3 is be VBZ 36297 2269 4 reproduced reproduce VBN 36297 2269 5 a a DT 36297 2269 6 photograph photograph NN 36297 2269 7 of of IN 36297 2269 8 the the DT 36297 2269 9 end end NN 36297 2269 10 of of IN 36297 2269 11 a a DT 36297 2269 12 board board NN 36297 2269 13 which which WDT 36297 2269 14 was be VBD 36297 2269 15 plane plane NN 36297 2269 16 or or CC 36297 2269 17 straight straight RB 36297 2269 18 notwithstanding notwithstanding IN 36297 2269 19 its -PRON- PRP$ 36297 2269 20 warped warped JJ 36297 2269 21 , , , 36297 2269 22 or or CC 36297 2269 23 bowed bow VBD 36297 2269 24 , , , 36297 2269 25 appearance appearance NN 36297 2269 26 . . . 36297 2270 1 The the DT 36297 2270 2 original original JJ 36297 2270 3 photographs photograph NNS 36297 2270 4 were be VBD 36297 2270 5 placed place VBN 36297 2270 6 so so IN 36297 2270 7 as as IN 36297 2270 8 to to TO 36297 2270 9 be be VB 36297 2270 10 related relate VBN 36297 2270 11 as as IN 36297 2270 12 shown show VBN 36297 2270 13 in in IN 36297 2270 14 the the DT 36297 2270 15 figure figure NN 36297 2270 16 . . . 36297 2271 1 Various various JJ 36297 2271 2 degrees degree NNS 36297 2271 3 of of IN 36297 2271 4 the the DT 36297 2271 5 illusion illusion NN 36297 2271 6 are be VBP 36297 2271 7 evident evident JJ 36297 2271 8 . . . 36297 2272 1 The the DT 36297 2272 2 reader reader NN 36297 2272 3 will will MD 36297 2272 4 perhaps perhaps RB 36297 2272 5 find find VB 36297 2272 6 it -PRON- PRP 36297 2272 7 necessary necessary JJ 36297 2272 8 to to TO 36297 2272 9 convince convince VB 36297 2272 10 himself -PRON- PRP 36297 2272 11 of of IN 36297 2272 12 the the DT 36297 2272 13 straightness straightness NN 36297 2272 14 of of IN 36297 2272 15 the the DT 36297 2272 16 horizontal horizontal JJ 36297 2272 17 edges edge NNS 36297 2272 18 by by IN 36297 2272 19 applying apply VBG 36297 2272 20 a a DT 36297 2272 21 straight straight JJ 36297 2272 22 edge edge NN 36297 2272 23 . . . 36297 2273 1 These these DT 36297 2273 2 are be VBP 36297 2273 3 examples example NNS 36297 2273 4 of of IN 36297 2273 5 the the DT 36297 2273 6 same same JJ 36297 2273 7 illusion illusion NN 36297 2273 8 as as IN 36297 2273 9 shown show VBN 36297 2273 10 in in IN 36297 2273 11 Figs Figs NNP 36297 2273 12 . . . 36297 2274 1 37 37 CD 36297 2274 2 to to IN 36297 2274 3 40 40 CD 36297 2274 4 . . . 36297 2275 1 [ [ -LRB- 36297 2275 2 Illustration illustration NN 36297 2275 3 : : : 36297 2275 4 Fig Fig NNP 36297 2275 5 . . . 36297 2276 1 83.--Another 83.--another CD 36297 2276 2 example example NN 36297 2276 3 similar similar JJ 36297 2276 4 to to IN 36297 2276 5 Fig Fig NNP 36297 2276 6 . . . 36297 2277 1 82 82 CD 36297 2277 2 . . . 36297 2277 3 ] ] -RRB- 36297 2278 1 [ [ -LRB- 36297 2278 2 Illustration illustration NN 36297 2278 3 : : : 36297 2278 4 Fig Fig NNP 36297 2278 5 . . . 36297 2279 1 84.--From 84.--From : 36297 2279 2 actual actual JJ 36297 2279 3 photographs photograph NNS 36297 2279 4 of of IN 36297 2279 5 the the DT 36297 2279 6 end end NN 36297 2279 7 - - HYPH 36297 2279 8 grain grain NN 36297 2279 9 of of IN 36297 2279 10 a a DT 36297 2279 11 board board NN 36297 2279 12 . . . 36297 2279 13 ] ] -RRB- 36297 2280 1 Perhaps perhaps RB 36297 2280 2 a a DT 36297 2280 3 brief brief JJ 36297 2280 4 statement statement NN 36297 2280 5 regarding regard VBG 36297 2280 6 the the DT 36297 2280 7 modern modern JJ 36297 2280 8 _ _ NNP 36297 2280 9 isms isms NNPS 36297 2280 10 _ _ NNP 36297 2280 11 in in IN 36297 2280 12 art art NN 36297 2280 13 may may MD 36297 2280 14 be be VB 36297 2280 15 of of IN 36297 2280 16 interest interest NN 36297 2280 17 . . . 36297 2281 1 In in IN 36297 2281 2 considering consider VBG 36297 2281 3 some some DT 36297 2281 4 of of IN 36297 2281 5 the the DT 36297 2281 6 extreme extreme JJ 36297 2281 7 examples example NNS 36297 2281 8 , , , 36297 2281 9 we -PRON- PRP 36297 2281 10 must must MD 36297 2281 11 revise revise VB 36297 2281 12 our -PRON- PRP$ 36297 2281 13 idea idea NN 36297 2281 14 that that IN 36297 2281 15 art art NN 36297 2281 16 is be VBZ 36297 2281 17 or or CC 36297 2281 18 should should MD 36297 2281 19 be be VB 36297 2281 20 always always RB 36297 2281 21 beautiful beautiful JJ 36297 2281 22 . . . 36297 2282 1 The the DT 36297 2282 2 many many JJ 36297 2282 3 definitions definition NNS 36297 2282 4 of of IN 36297 2282 5 art art NN 36297 2282 6 would would MD 36297 2282 7 lead lead VB 36297 2282 8 us -PRON- PRP 36297 2282 9 too too RB 36297 2282 10 far far RB 36297 2282 11 afield afield JJ 36297 2282 12 to to TO 36297 2282 13 discuss discuss VB 36297 2282 14 them -PRON- PRP 36297 2282 15 here here RB 36297 2282 16 but but CC 36297 2282 17 in in IN 36297 2282 18 its -PRON- PRP$ 36297 2282 19 most most RBS 36297 2282 20 extended extended JJ 36297 2282 21 and and CC 36297 2282 22 popular popular JJ 36297 2282 23 sense sense NN 36297 2282 24 , , , 36297 2282 25 art art NN 36297 2282 26 may may MD 36297 2282 27 be be VB 36297 2282 28 considered consider VBN 36297 2282 29 to to TO 36297 2282 30 mean mean VB 36297 2282 31 everything everything NN 36297 2282 32 which which WDT 36297 2282 33 we -PRON- PRP 36297 2282 34 distinguish distinguish VBP 36297 2282 35 from from IN 36297 2282 36 nature nature NN 36297 2282 37 . . . 36297 2283 1 Certainly certainly RB 36297 2283 2 art art NN 36297 2283 3 need nee MD 36297 2283 4 not not RB 36297 2283 5 be be VB 36297 2283 6 beautiful beautiful JJ 36297 2283 7 , , , 36297 2283 8 although although IN 36297 2283 9 it -PRON- PRP 36297 2283 10 does do VBZ 36297 2283 11 seem seem VB 36297 2283 12 that that IN 36297 2283 13 the the DT 36297 2283 14 world world NN 36297 2283 15 would would MD 36297 2283 16 welcome welcome VB 36297 2283 17 the the DT 36297 2283 18 beautiful beautiful JJ 36297 2283 19 and and CC 36297 2283 20 would would MD 36297 2283 21 get get VB 36297 2283 22 along along RP 36297 2283 23 contentedly contentedly RB 36297 2283 24 without without IN 36297 2283 25 art art NN 36297 2283 26 that that WDT 36297 2283 27 is be VBZ 36297 2283 28 ugly ugly JJ 36297 2283 29 or or CC 36297 2283 30 repulsive repulsive JJ 36297 2283 31 . . . 36297 2284 1 The the DT 36297 2284 2 modern modern JJ 36297 2284 3 _ _ NNP 36297 2284 4 isms isms NNPS 36297 2284 5 _ _ NNP 36297 2284 6 must must MD 36297 2284 7 be be VB 36297 2284 8 viewed view VBN 36297 2284 9 with with IN 36297 2284 10 consideration consideration NN 36297 2284 11 , , , 36297 2284 12 for for IN 36297 2284 13 there there EX 36297 2284 14 are be VBP 36297 2284 15 many many JJ 36297 2284 16 impostors impostor NNS 36297 2284 17 concealing conceal VBG 36297 2284 18 their -PRON- PRP$ 36297 2284 19 inabilities inability NNS 36297 2284 20 by by IN 36297 2284 21 flocking flock VBG 36297 2284 22 to to IN 36297 2284 23 these these DT 36297 2284 24 less less RBR 36297 2284 25 understood understand VBN 36297 2284 26 fields field NNS 36297 2284 27 . . . 36297 2285 1 However however RB 36297 2285 2 , , , 36297 2285 3 there there EX 36297 2285 4 are be VBP 36297 2285 5 many many JJ 36297 2285 6 sincere sincere JJ 36297 2285 7 workers worker NNS 36297 2285 8 -- -- : 36297 2285 9 research research NN 36297 2285 10 artists artist NNS 36297 2285 11 -- -- : 36297 2285 12 in in IN 36297 2285 13 the the DT 36297 2285 14 modern modern JJ 36297 2285 15 _ _ NNP 36297 2285 16 isms isms NNPS 36297 2285 17 _ _ NNP 36297 2285 18 and and CC 36297 2285 19 their -PRON- PRP$ 36297 2285 20 works work NNS 36297 2285 21 may may MD 36297 2285 22 best well RBS 36297 2285 23 be be VB 36297 2285 24 described describe VBN 36297 2285 25 at at IN 36297 2285 26 present present JJ 36297 2285 27 as as IN 36297 2285 28 experiments experiment NNS 36297 2285 29 in in IN 36297 2285 30 the the DT 36297 2285 31 psychology psychology NN 36297 2285 32 of of IN 36297 2285 33 light light NN 36297 2285 34 , , , 36297 2285 35 shade shade NN 36297 2285 36 , , , 36297 2285 37 and and CC 36297 2285 38 color color NN 36297 2285 39 . . . 36297 2286 1 They -PRON- PRP 36297 2286 2 have have VBP 36297 2286 3 cast cast VBN 36297 2286 4 aside aside RB 36297 2286 5 or or CC 36297 2286 6 reduced reduce VBN 36297 2286 7 in in IN 36297 2286 8 importance importance NN 36297 2286 9 some some DT 36297 2286 10 of of IN 36297 2286 11 the the DT 36297 2286 12 more more RBR 36297 2286 13 familiar familiar JJ 36297 2286 14 components component NNS 36297 2286 15 such such JJ 36297 2286 16 as as IN 36297 2286 17 realism realism NN 36297 2286 18 and and CC 36297 2286 19 are be VBP 36297 2286 20 striving strive VBG 36297 2286 21 more more RBR 36297 2286 22 deeply deeply RB 36297 2286 23 to to TO 36297 2286 24 utilize utilize VB 36297 2286 25 the the DT 36297 2286 26 psychology psychology NN 36297 2286 27 of of IN 36297 2286 28 light light NN 36297 2286 29 and and CC 36297 2286 30 color color NN 36297 2286 31 . . . 36297 2287 1 Some some DT 36297 2287 2 of of IN 36297 2287 3 them -PRON- PRP 36297 2287 4 admit admit VBP 36297 2287 5 that that IN 36297 2287 6 they -PRON- PRP 36297 2287 7 strive strive VBP 36297 2287 8 to to TO 36297 2287 9 paint paint VB 36297 2287 10 through through IN 36297 2287 11 child child NN 36297 2287 12 's 's POS 36297 2287 13 eyes eye NNS 36297 2287 14 and and CC 36297 2287 15 mind mind NN 36297 2287 16 -- -- : 36297 2287 17 free free JJ 36297 2287 18 from from IN 36297 2287 19 experience experience NN 36297 2287 20 , , , 36297 2287 21 prejudice prejudice NN 36297 2287 22 , , , 36297 2287 23 and and CC 36297 2287 24 imitation imitation NN 36297 2287 25 . . . 36297 2288 1 These these DT 36297 2288 2 need need VBP 36297 2288 3 all all PDT 36297 2288 4 the the DT 36297 2288 5 scientific scientific JJ 36297 2288 6 knowledge knowledge NN 36297 2288 7 which which WDT 36297 2288 8 is be VBZ 36297 2288 9 available available JJ 36297 2288 10 -- -- : 36297 2288 11 and and CC 36297 2288 12 maybe maybe RB 36297 2288 13 more more JJR 36297 2288 14 . . . 36297 2289 1 In in IN 36297 2289 2 closing close VBG 36297 2289 3 this this DT 36297 2289 4 chapter chapter NN 36297 2289 5 , , , 36297 2289 6 it -PRON- PRP 36297 2289 7 appears appear VBZ 36297 2289 8 necessary necessary JJ 36297 2289 9 to to TO 36297 2289 10 remind remind VB 36297 2289 11 the the DT 36297 2289 12 artist artist NN 36297 2289 13 and and CC 36297 2289 14 others other NNS 36297 2289 15 that that IN 36297 2289 16 it -PRON- PRP 36297 2289 17 is be VBZ 36297 2289 18 far far RB 36297 2289 19 from from IN 36297 2289 20 the the DT 36297 2289 21 author author NN 36297 2289 22 's 's POS 36297 2289 23 intention intention NN 36297 2289 24 to to TO 36297 2289 25 subordinate subordinate VB 36297 2289 26 the the DT 36297 2289 27 artist artist NN 36297 2289 28 's 's POS 36297 2289 29 sensibility sensibility NN 36297 2289 30 to to IN 36297 2289 31 the the DT 36297 2289 32 scientific scientific JJ 36297 2289 33 facts fact NNS 36297 2289 34 or or CC 36297 2289 35 tools tool NNS 36297 2289 36 . . . 36297 2290 1 Art art NN 36297 2290 2 can can MD 36297 2290 3 not not RB 36297 2290 4 be be VB 36297 2290 5 manufactured manufacture VBN 36297 2290 6 by by IN 36297 2290 7 means mean NNS 36297 2290 8 of of IN 36297 2290 9 formulae formulae NNP 36297 2290 10 . . . 36297 2291 1 This this DT 36297 2291 2 would would MD 36297 2291 3 not not RB 36297 2291 4 be be VB 36297 2291 5 true true JJ 36297 2291 6 if if IN 36297 2291 7 we -PRON- PRP 36297 2291 8 knew know VBD 36297 2291 9 a a DT 36297 2291 10 great great JJ 36297 2291 11 deal deal NN 36297 2291 12 more more RBR 36297 2291 13 than than IN 36297 2291 14 we -PRON- PRP 36297 2291 15 do do VBP 36297 2291 16 pertaining pertain VBG 36297 2291 17 to to IN 36297 2291 18 the the DT 36297 2291 19 science science NN 36297 2291 20 of of IN 36297 2291 21 light light NN 36297 2291 22 , , , 36297 2291 23 color color NN 36297 2291 24 , , , 36297 2291 25 and and CC 36297 2291 26 vision vision NN 36297 2291 27 . . . 36297 2292 1 The the DT 36297 2292 2 artist artist NN 36297 2292 3 's 's POS 36297 2292 4 fine fine JJ 36297 2292 5 sensibility sensibility NN 36297 2292 6 will will MD 36297 2292 7 always always RB 36297 2292 8 be be VB 36297 2292 9 the the DT 36297 2292 10 dominating dominating JJ 36297 2292 11 necessity necessity NN 36297 2292 12 in in IN 36297 2292 13 the the DT 36297 2292 14 production production NN 36297 2292 15 of of IN 36297 2292 16 art art NN 36297 2292 17 . . . 36297 2293 1 He -PRON- PRP 36297 2293 2 must must MD 36297 2293 3 possess possess VB 36297 2293 4 the the DT 36297 2293 5 ability ability NN 36297 2293 6 to to TO 36297 2293 7 compose compose VB 36297 2293 8 exquisitely exquisitely RB 36297 2293 9 ; ; : 36297 2293 10 he -PRON- PRP 36297 2293 11 must must MD 36297 2293 12 be be VB 36297 2293 13 able able JJ 36297 2293 14 to to TO 36297 2293 15 look look VB 36297 2293 16 at at IN 36297 2293 17 nature nature NN 36297 2293 18 through through IN 36297 2293 19 a a DT 36297 2293 20 special special JJ 36297 2293 21 temperament temperament NN 36297 2293 22 ; ; : 36297 2293 23 he -PRON- PRP 36297 2293 24 must must MD 36297 2293 25 be be VB 36297 2293 26 gifted gift VBN 36297 2293 27 in in IN 36297 2293 28 eye eye NN 36297 2293 29 and and CC 36297 2293 30 in in IN 36297 2293 31 hand hand NN 36297 2293 32 ; ; : 36297 2293 33 he -PRON- PRP 36297 2293 34 must must MD 36297 2293 35 be be VB 36297 2293 36 master master NN 36297 2293 37 of of IN 36297 2293 38 unusual unusual JJ 36297 2293 39 visual visual JJ 36297 2293 40 and and CC 36297 2293 41 intellectual intellectual JJ 36297 2293 42 processes process NNS 36297 2293 43 . . . 36297 2294 1 But but CC 36297 2294 2 knowledge knowledge NN 36297 2294 3 will will MD 36297 2294 4 aid aid VB 36297 2294 5 him -PRON- PRP 36297 2294 6 as as RB 36297 2294 7 well well RB 36297 2294 8 as as IN 36297 2294 9 those those DT 36297 2294 10 in in IN 36297 2294 11 other other JJ 36297 2294 12 activities activity NNS 36297 2294 13 . . . 36297 2295 1 A a DT 36297 2295 2 superior superior JJ 36297 2295 3 acquaintance acquaintance NN 36297 2295 4 with with IN 36297 2295 5 scientific scientific JJ 36297 2295 6 facts fact NNS 36297 2295 7 lifted lift VBN 36297 2295 8 past past JJ 36297 2295 9 masters master NNS 36297 2295 10 above above IN 36297 2295 11 their -PRON- PRP$ 36297 2295 12 fellows fellow NNS 36297 2295 13 and and CC 36297 2295 14 what what WP 36297 2295 15 helped help VBD 36297 2295 16 Leonardo Leonardo NNP 36297 2295 17 da da NNP 36297 2295 18 Vinci Vinci NNP 36297 2295 19 , , , 36297 2295 20 Rembrandt Rembrandt NNP 36297 2295 21 , , , 36297 2295 22 Velasquez Velasquez NNP 36297 2295 23 , , , 36297 2295 24 Turner Turner NNP 36297 2295 25 , , , 36297 2295 26 Claude Claude NNP 36297 2295 27 , , , 36297 2295 28 Monet Monet NNP 36297 2295 29 , , , 36297 2295 30 and and CC 36297 2295 31 other other JJ 36297 2295 32 masters master NNS 36297 2295 33 will will MD 36297 2295 34 help help VB 36297 2295 35 artists artist NNS 36297 2295 36 of of IN 36297 2295 37 today today NN 36297 2295 38 . . . 36297 2296 1 What what WP 36297 2296 2 would would MD 36297 2296 3 not not RB 36297 2296 4 those those DT 36297 2296 5 past past JJ 36297 2296 6 masters master NNS 36297 2296 7 have have VBP 36297 2296 8 accomplished accomplish VBN 36297 2296 9 if if IN 36297 2296 10 they -PRON- PRP 36297 2296 11 had have VBD 36297 2296 12 available available JJ 36297 2296 13 in in IN 36297 2296 14 their -PRON- PRP$ 36297 2296 15 time time NN 36297 2296 16 the the DT 36297 2296 17 greater great JJR 36297 2296 18 knowledge knowledge NN 36297 2296 19 of of IN 36297 2296 20 the the DT 36297 2296 21 present present NN 36297 2296 22 ! ! . 36297 2297 1 XIII XIII NNP 36297 2297 2 ARCHITECTURE architecture VBP 36297 2297 3 Many many JJ 36297 2297 4 illusions illusion NNS 36297 2297 5 are be VBP 36297 2297 6 found find VBN 36297 2297 7 in in IN 36297 2297 8 architecture architecture NN 36297 2297 9 and and CC 36297 2297 10 , , , 36297 2297 11 strangely strangely RB 36297 2297 12 enough enough RB 36297 2297 13 , , , 36297 2297 14 many many JJ 36297 2297 15 of of IN 36297 2297 16 these these DT 36297 2297 17 were be VBD 36297 2297 18 recognized recognize VBN 36297 2297 19 long long RB 36297 2297 20 before before IN 36297 2297 21 painting painting NN 36297 2297 22 developed develop VBN 36297 2297 23 beyond beyond IN 36297 2297 24 its -PRON- PRP$ 36297 2297 25 primitive primitive JJ 36297 2297 26 stages stage NNS 36297 2297 27 . . . 36297 2298 1 The the DT 36297 2298 2 architecture architecture NN 36297 2298 3 of of IN 36297 2298 4 classic classic JJ 36297 2298 5 Greece Greece NNP 36297 2298 6 displays display VBZ 36297 2298 7 a a DT 36297 2298 8 highly highly RB 36297 2298 9 developed developed JJ 36297 2298 10 knowledge knowledge NN 36297 2298 11 of of IN 36297 2298 12 many many JJ 36297 2298 13 geometrical geometrical JJ 36297 2298 14 illusions illusion NNS 36297 2298 15 and and CC 36297 2298 16 the the DT 36297 2298 17 architects architect NNS 36297 2298 18 of of IN 36297 2298 19 those those DT 36297 2298 20 far far RB 36297 2298 21 - - HYPH 36297 2298 22 off off RP 36297 2298 23 centuries century NNS 36297 2298 24 carefully carefully RB 36297 2298 25 worked work VBD 36297 2298 26 out out RP 36297 2298 27 details detail NNS 36297 2298 28 for for IN 36297 2298 29 counteracting counteract VBG 36297 2298 30 them -PRON- PRP 36297 2298 31 . . . 36297 2299 1 Drawings drawing NNS 36297 2299 2 reveal reveal VBP 36297 2299 3 many many JJ 36297 2299 4 illusions illusion NNS 36297 2299 5 to to IN 36297 2299 6 the the DT 36297 2299 7 architect architect NN 36297 2299 8 , , , 36297 2299 9 but but CC 36297 2299 10 many many JJ 36297 2299 11 are be VBP 36297 2299 12 not not RB 36297 2299 13 predicted predict VBN 36297 2299 14 by by IN 36297 2299 15 them -PRON- PRP 36297 2299 16 . . . 36297 2300 1 The the DT 36297 2300 2 ever ever RB 36297 2300 3 - - HYPH 36297 2300 4 changing change VBG 36297 2300 5 relations relation NNS 36297 2300 6 of of IN 36297 2300 7 lines line NNS 36297 2300 8 and and CC 36297 2300 9 forms form NNS 36297 2300 10 in in IN 36297 2300 11 architecture architecture NN 36297 2300 12 as as IN 36297 2300 13 we -PRON- PRP 36297 2300 14 vary vary VBP 36297 2300 15 our -PRON- PRP$ 36297 2300 16 viewpoint viewpoint NN 36297 2300 17 introduce introduce VBP 36297 2300 18 many many JJ 36297 2300 19 illusions illusion NNS 36297 2300 20 which which WDT 36297 2300 21 may may MD 36297 2300 22 appear appear VB 36297 2300 23 and and CC 36297 2300 24 disappear disappear VB 36297 2300 25 . . . 36297 2301 1 No no DT 36297 2301 2 view view NN 36297 2301 3 of of IN 36297 2301 4 a a DT 36297 2301 5 group group NN 36297 2301 6 of of IN 36297 2301 7 buildings building NNS 36297 2301 8 or or CC 36297 2301 9 of of IN 36297 2301 10 the the DT 36297 2301 11 components component NNS 36297 2301 12 of of IN 36297 2301 13 a a DT 36297 2301 14 single single JJ 36297 2301 15 structure structure NN 36297 2301 16 can can MD 36297 2301 17 be be VB 36297 2301 18 free free JJ 36297 2301 19 from from IN 36297 2301 20 optical optical JJ 36297 2301 21 illusions illusion NNS 36297 2301 22 . . . 36297 2302 1 We -PRON- PRP 36297 2302 2 never never RB 36297 2302 3 see see VBP 36297 2302 4 in in IN 36297 2302 5 the the DT 36297 2302 6 reality reality NN 36297 2302 7 the the DT 36297 2302 8 same same JJ 36297 2302 9 relations relation NNS 36297 2302 10 of of IN 36297 2302 11 lines line NNS 36297 2302 12 , , , 36297 2302 13 forms form NNS 36297 2302 14 , , , 36297 2302 15 colors color NNS 36297 2302 16 , , , 36297 2302 17 and and CC 36297 2302 18 brightnesses brightness NNS 36297 2302 19 as as IN 36297 2302 20 indicated indicate VBN 36297 2302 21 by by IN 36297 2302 22 the the DT 36297 2302 23 drawings drawing NNS 36297 2302 24 or or CC 36297 2302 25 blue blue JJ 36297 2302 26 - - HYPH 36297 2302 27 prints print NNS 36297 2302 28 . . . 36297 2303 1 Perhaps perhaps RB 36297 2303 2 this this DT 36297 2303 3 is be VBZ 36297 2303 4 one one CD 36297 2303 5 of of IN 36297 2303 6 the the DT 36297 2303 7 best good JJS 36297 2303 8 reasons reason NNS 36297 2303 9 for for IN 36297 2303 10 justifying justify VBG 36297 2303 11 the the DT 36297 2303 12 construction construction NN 36297 2303 13 of of IN 36297 2303 14 expensive expensive JJ 36297 2303 15 models model NNS 36297 2303 16 of of IN 36297 2303 17 our -PRON- PRP$ 36297 2303 18 more more RBR 36297 2303 19 pretentious pretentious JJ 36297 2303 20 structures structure NNS 36297 2303 21 . . . 36297 2304 1 No no DT 36297 2304 2 detailed detailed JJ 36297 2304 3 account account NN 36297 2304 4 of of IN 36297 2304 5 the the DT 36297 2304 6 many many JJ 36297 2304 7 architectural architectural JJ 36297 2304 8 illusions illusion NNS 36297 2304 9 will will MD 36297 2304 10 be be VB 36297 2304 11 attempted attempt VBN 36297 2304 12 , , , 36297 2304 13 for for IN 36297 2304 14 it -PRON- PRP 36297 2304 15 is be VBZ 36297 2304 16 easy easy JJ 36297 2304 17 for for IN 36297 2304 18 the the DT 36297 2304 19 reader reader NN 36297 2304 20 to to TO 36297 2304 21 see see VB 36297 2304 22 many many JJ 36297 2304 23 of of IN 36297 2304 24 the the DT 36297 2304 25 possibilities possibility NNS 36297 2304 26 suggested suggest VBN 36297 2304 27 by by IN 36297 2304 28 preceding precede VBG 36297 2304 29 chapters chapter NNS 36297 2304 30 . . . 36297 2305 1 However however RB 36297 2305 2 , , , 36297 2305 3 a a DT 36297 2305 4 few few JJ 36297 2305 5 will will MD 36297 2305 6 be be VB 36297 2305 7 touched touch VBN 36297 2305 8 upon upon IN 36297 2305 9 to to TO 36297 2305 10 reveal reveal VB 36297 2305 11 the the DT 36297 2305 12 magnitude magnitude NN 36297 2305 13 of of IN 36297 2305 14 the the DT 36297 2305 15 illusory illusory JJ 36297 2305 16 effect effect NN 36297 2305 17 and and CC 36297 2305 18 to to TO 36297 2305 19 aid aid VB 36297 2305 20 the the DT 36297 2305 21 observer observer NN 36297 2305 22 in in IN 36297 2305 23 looking look VBG 36297 2305 24 for for IN 36297 2305 25 or or CC 36297 2305 26 recognizing recognize VBG 36297 2305 27 them -PRON- PRP 36297 2305 28 , , , 36297 2305 29 or or CC 36297 2305 30 purely purely RB 36297 2305 31 for for IN 36297 2305 32 historical historical JJ 36297 2305 33 interest interest NN 36297 2305 34 . . . 36297 2306 1 In in IN 36297 2306 2 architecture architecture NN 36297 2306 3 the the DT 36297 2306 4 eye eye NN 36297 2306 5 can can MD 36297 2306 6 not not RB 36297 2306 7 be be VB 36297 2306 8 wholly wholly RB 36297 2306 9 satisfied satisfied JJ 36297 2306 10 by by IN 36297 2306 11 such such JJ 36297 2306 12 tools tool NNS 36297 2306 13 as as IN 36297 2306 14 the the DT 36297 2306 15 level level NN 36297 2306 16 , , , 36297 2306 17 the the DT 36297 2306 18 square square NN 36297 2306 19 , , , 36297 2306 20 and and CC 36297 2306 21 the the DT 36297 2306 22 plumb plumb JJ 36297 2306 23 - - HYPH 36297 2306 24 line line NN 36297 2306 25 . . . 36297 2307 1 The the DT 36297 2307 2 eye eye NN 36297 2307 3 is be VBZ 36297 2307 4 satisfied satisfied JJ 36297 2307 5 only only RB 36297 2307 6 when when WRB 36297 2307 7 the the DT 36297 2307 8 _ _ NNP 36297 2307 9 appearance appearance NN 36297 2307 10 _ _ NNP 36297 2307 11 is be VBZ 36297 2307 12 satisfactory satisfactory JJ 36297 2307 13 . . . 36297 2308 1 For for IN 36297 2308 2 the the DT 36297 2308 3 purpose purpose NN 36297 2308 4 of of IN 36297 2308 5 showing show VBG 36297 2308 6 the the DT 36297 2308 7 extent extent NN 36297 2308 8 of of IN 36297 2308 9 certain certain JJ 36297 2308 10 architectural architectural JJ 36297 2308 11 illusions illusion NNS 36297 2308 12 , , , 36297 2308 13 the the DT 36297 2308 14 compensatory compensatory JJ 36297 2308 15 measures measure NNS 36297 2308 16 applied apply VBN 36297 2308 17 by by IN 36297 2308 18 the the DT 36297 2308 19 Greeks Greeks NNPS 36297 2308 20 are be VBP 36297 2308 21 excellent excellent JJ 36297 2308 22 examples example NNS 36297 2308 23 . . . 36297 2309 1 These these DT 36297 2309 2 also also RB 36297 2309 3 reveal reveal VBP 36297 2309 4 the the DT 36297 2309 5 remarkable remarkable JJ 36297 2309 6 application application NN 36297 2309 7 of of IN 36297 2309 8 science science NN 36297 2309 9 to to IN 36297 2309 10 architecture architecture NN 36297 2309 11 as as IN 36297 2309 12 compared compare VBN 36297 2309 13 with with IN 36297 2309 14 the the DT 36297 2309 15 scanty scanty NN 36297 2309 16 application application NN 36297 2309 17 in in IN 36297 2309 18 painting painting NN 36297 2309 19 of of IN 36297 2309 20 the the DT 36297 2309 21 same same JJ 36297 2309 22 period period NN 36297 2309 23 . . . 36297 2310 1 During during IN 36297 2310 2 the the DT 36297 2310 3 best good JJS 36297 2310 4 period period NN 36297 2310 5 of of IN 36297 2310 6 Grecian grecian JJ 36297 2310 7 art art NN 36297 2310 8 many many JJ 36297 2310 9 refinements refinement NNS 36297 2310 10 were be VBD 36297 2310 11 applied apply VBN 36297 2310 12 in in IN 36297 2310 13 order order NN 36297 2310 14 to to TO 36297 2310 15 correct correct VB 36297 2310 16 optical optical JJ 36297 2310 17 illusions illusion NNS 36297 2310 18 . . . 36297 2311 1 It -PRON- PRP 36297 2311 2 would would MD 36297 2311 3 be be VB 36297 2311 4 interesting interesting JJ 36297 2311 5 to to TO 36297 2311 6 know know VB 36297 2311 7 to to TO 36297 2311 8 what what WDT 36297 2311 9 extent extent NN 36297 2311 10 the the DT 36297 2311 11 magnitude magnitude NN 36297 2311 12 of of IN 36297 2311 13 the the DT 36297 2311 14 illusions illusion NNS 36297 2311 15 as as IN 36297 2311 16 they -PRON- PRP 36297 2311 17 appeared appear VBD 36297 2311 18 to to IN 36297 2311 19 many many JJ 36297 2311 20 persons person NNS 36297 2311 21 were be VBD 36297 2311 22 actually actually RB 36297 2311 23 studied study VBN 36297 2311 24 . . . 36297 2312 1 The the DT 36297 2312 2 Parthenon Parthenon NNP 36297 2312 3 of of IN 36297 2312 4 Athens Athens NNP 36297 2312 5 affords afford VBZ 36297 2312 6 an an DT 36297 2312 7 excellent excellent JJ 36297 2312 8 example example NN 36297 2312 9 of of IN 36297 2312 10 the the DT 36297 2312 11 magnitude magnitude NN 36297 2312 12 of of IN 36297 2312 13 the the DT 36297 2312 14 corrections correction NNS 36297 2312 15 which which WDT 36297 2312 16 the the DT 36297 2312 17 designer designer NN 36297 2312 18 thought think VBD 36297 2312 19 necessary necessary JJ 36297 2312 20 in in IN 36297 2312 21 order order NN 36297 2312 22 to to TO 36297 2312 23 satisfy satisfy VB 36297 2312 24 the the DT 36297 2312 25 eye eye NN 36297 2312 26 . . . 36297 2313 1 The the DT 36297 2313 2 long long JJ 36297 2313 3 lines line NNS 36297 2313 4 of of IN 36297 2313 5 the the DT 36297 2313 6 architrave architrave NN 36297 2313 7 -- -- : 36297 2313 8 the the DT 36297 2313 9 beam beam NN 36297 2313 10 which which WDT 36297 2313 11 surmounts surmount VBZ 36297 2313 12 the the DT 36297 2313 13 columns column NNS 36297 2313 14 or or CC 36297 2313 15 extends extend VBZ 36297 2313 16 from from IN 36297 2313 17 column column NN 36297 2313 18 to to IN 36297 2313 19 column column NN 36297 2313 20 -- -- : 36297 2313 21 would would MD 36297 2313 22 appear appear VB 36297 2313 23 to to TO 36297 2313 24 sag sag VB 36297 2313 25 if if IN 36297 2313 26 it -PRON- PRP 36297 2313 27 were be VBD 36297 2313 28 actually actually RB 36297 2313 29 straight straight JJ 36297 2313 30 . . . 36297 2314 1 This this DT 36297 2314 2 is be VBZ 36297 2314 3 also also RB 36297 2314 4 true true JJ 36297 2314 5 of of IN 36297 2314 6 the the DT 36297 2314 7 stylobate stylobate NN 36297 2314 8 , , , 36297 2314 9 or or CC 36297 2314 10 substructure substructure NN 36297 2314 11 of of IN 36297 2314 12 a a DT 36297 2314 13 colonnade colonnade NN 36297 2314 14 , , , 36297 2314 15 and and CC 36297 2314 16 of of IN 36297 2314 17 pediments pediment NNS 36297 2314 18 and and CC 36297 2314 19 other other JJ 36297 2314 20 features feature NNS 36297 2314 21 . . . 36297 2315 1 These these DT 36297 2315 2 lines line NNS 36297 2315 3 were be VBD 36297 2315 4 often often RB 36297 2315 5 convex convex NNS 36297 2315 6 instead instead RB 36297 2315 7 of of IN 36297 2315 8 being be VBG 36297 2315 9 straight straight RB 36297 2315 10 as as IN 36297 2315 11 the the DT 36297 2315 12 eye eye NN 36297 2315 13 desires desire VBZ 36297 2315 14 to to TO 36297 2315 15 see see VB 36297 2315 16 them -PRON- PRP 36297 2315 17 . . . 36297 2316 1 In in IN 36297 2316 2 the the DT 36297 2316 3 Parthenon Parthenon NNP 36297 2316 4 , , , 36297 2316 5 the the DT 36297 2316 6 stylobate stylobate NN 36297 2316 7 has have VBZ 36297 2316 8 an an DT 36297 2316 9 upward upward JJ 36297 2316 10 curvature curvature NN 36297 2316 11 of of IN 36297 2316 12 more more JJR 36297 2316 13 than than IN 36297 2316 14 four four CD 36297 2316 15 inches inch NNS 36297 2316 16 on on IN 36297 2316 17 the the DT 36297 2316 18 sides side NNS 36297 2316 19 of of IN 36297 2316 20 the the DT 36297 2316 21 edifice edifice NN 36297 2316 22 and and CC 36297 2316 23 of of IN 36297 2316 24 more more JJR 36297 2316 25 than than IN 36297 2316 26 two two CD 36297 2316 27 and and CC 36297 2316 28 a a DT 36297 2316 29 half half NN 36297 2316 30 inches inch NNS 36297 2316 31 on on IN 36297 2316 32 the the DT 36297 2316 33 east east NNP 36297 2316 34 and and CC 36297 2316 35 west west NNP 36297 2316 36 fronts front NNS 36297 2316 37 . . . 36297 2317 1 Vertical vertical JJ 36297 2317 2 features feature NNS 36297 2317 3 were be VBD 36297 2317 4 made make VBN 36297 2317 5 to to TO 36297 2317 6 incline incline VB 36297 2317 7 inward inward RB 36297 2317 8 in in IN 36297 2317 9 order order NN 36297 2317 10 to to TO 36297 2317 11 correct correct VB 36297 2317 12 the the DT 36297 2317 13 common common JJ 36297 2317 14 appearance appearance NN 36297 2317 15 of of IN 36297 2317 16 leaning lean VBG 36297 2317 17 outward outward RB 36297 2317 18 at at IN 36297 2317 19 the the DT 36297 2317 20 top top NN 36297 2317 21 . . . 36297 2318 1 In in IN 36297 2318 2 the the DT 36297 2318 3 Parthenon Parthenon NNP 36297 2318 4 , , , 36297 2318 5 the the DT 36297 2318 6 axes axis NNS 36297 2318 7 of of IN 36297 2318 8 the the DT 36297 2318 9 columns column NNS 36297 2318 10 are be VBP 36297 2318 11 not not RB 36297 2318 12 vertical vertical JJ 36297 2318 13 , , , 36297 2318 14 but but CC 36297 2318 15 they -PRON- PRP 36297 2318 16 are be VBP 36297 2318 17 inclined incline VBN 36297 2318 18 inward inward IN 36297 2318 19 nearly nearly RB 36297 2318 20 three three CD 36297 2318 21 inches inch NNS 36297 2318 22 . . . 36297 2319 1 They -PRON- PRP 36297 2319 2 are be VBP 36297 2319 3 said say VBN 36297 2319 4 also also RB 36297 2319 5 to to TO 36297 2319 6 be be VB 36297 2319 7 inclined incline VBN 36297 2319 8 toward toward IN 36297 2319 9 each each DT 36297 2319 10 other other JJ 36297 2319 11 to to IN 36297 2319 12 such such PDT 36297 2319 13 a a DT 36297 2319 14 degree degree NN 36297 2319 15 that that IN 36297 2319 16 they -PRON- PRP 36297 2319 17 would would MD 36297 2319 18 meet meet VB 36297 2319 19 at at IN 36297 2319 20 an an DT 36297 2319 21 altitude altitude NN 36297 2319 22 of of IN 36297 2319 23 one one CD 36297 2319 24 mile mile NN 36297 2319 25 above above IN 36297 2319 26 the the DT 36297 2319 27 ground ground NN 36297 2319 28 . . . 36297 2320 1 The the DT 36297 2320 2 eleven eleven CD 36297 2320 3 - - HYPH 36297 2320 4 foot foot NN 36297 2320 5 frieze frieze NN 36297 2320 6 and and CC 36297 2320 7 architrave architrave NN 36297 2320 8 is be VBZ 36297 2320 9 inclined incline VBN 36297 2320 10 inward inward RB 36297 2320 11 about about RB 36297 2320 12 one one CD 36297 2320 13 and and CC 36297 2320 14 one one CD 36297 2320 15 - - HYPH 36297 2320 16 half half NN 36297 2320 17 inches inch NNS 36297 2320 18 . . . 36297 2321 1 In in IN 36297 2321 2 Fig Fig NNP 36297 2321 3 . . . 36297 2322 1 85 85 CD 36297 2322 2 , , , 36297 2322 3 _ _ NNP 36297 2322 4 a a DT 36297 2322 5 _ _ NNP 36297 2322 6 represents represent VBZ 36297 2322 7 the the DT 36297 2322 8 front front NN 36297 2322 9 of of IN 36297 2322 10 a a DT 36297 2322 11 temple temple NN 36297 2322 12 as as IN 36297 2322 13 it -PRON- PRP 36297 2322 14 should should MD 36297 2322 15 appear appear VB 36297 2322 16 ; ; : 36297 2322 17 _ _ NNP 36297 2322 18 b b NNP 36297 2322 19 _ _ NNP 36297 2322 20 represents represent VBZ 36297 2322 21 its -PRON- PRP$ 36297 2322 22 appearance appearance NN 36297 2322 23 ( ( -LRB- 36297 2322 24 exaggerated exaggerated JJ 36297 2322 25 ) ) -RRB- 36297 2322 26 if if IN 36297 2322 27 it -PRON- PRP 36297 2322 28 were be VBD 36297 2322 29 actually actually RB 36297 2322 30 built build VBN 36297 2322 31 like like IN 36297 2322 32 _ _ NNP 36297 2322 33 a a DT 36297 2322 34 _ _ NNP 36297 2322 35 without without IN 36297 2322 36 compensations compensation NNS 36297 2322 37 for for IN 36297 2322 38 optical optical JJ 36297 2322 39 illusions illusion NNS 36297 2322 40 ; ; : 36297 2322 41 _ _ NNP 36297 2322 42 c c NNP 36297 2322 43 _ _ NNP 36297 2322 44 represents represent VBZ 36297 2322 45 it -PRON- PRP 36297 2322 46 as as RB 36297 2322 47 built build VBN 36297 2322 48 and and CC 36297 2322 49 showing show VBG 36297 2322 50 the the DT 36297 2322 51 physical physical JJ 36297 2322 52 corrections correction NNS 36297 2322 53 ( ( -LRB- 36297 2322 54 exaggerated exaggerated JJ 36297 2322 55 ) ) -RRB- 36297 2322 56 in in IN 36297 2322 57 order order NN 36297 2322 58 that that IN 36297 2322 59 it -PRON- PRP 36297 2322 60 may may MD 36297 2322 61 appear appear VB 36297 2322 62 to to IN 36297 2322 63 the the DT 36297 2322 64 eye eye NN 36297 2322 65 as as IN 36297 2322 66 _ _ NNP 36297 2322 67 a a DT 36297 2322 68 _ _ NNP 36297 2322 69 does do VBZ 36297 2322 70 . . . 36297 2323 1 Tall tall JJ 36297 2323 2 columns column NNS 36297 2323 3 if if IN 36297 2323 4 they -PRON- PRP 36297 2323 5 are be VBP 36297 2323 6 actually actually RB 36297 2323 7 straight straight JJ 36297 2323 8 are be VBP 36297 2323 9 likely likely JJ 36297 2323 10 to to TO 36297 2323 11 appear appear VB 36297 2323 12 somewhat somewhat RB 36297 2323 13 shrunken shrink VBN 36297 2323 14 in in IN 36297 2323 15 the the DT 36297 2323 16 middle middle NN 36297 2323 17 ; ; : 36297 2323 18 therefore therefore RB 36297 2323 19 they -PRON- PRP 36297 2323 20 are be VBP 36297 2323 21 sometimes sometimes RB 36297 2323 22 made make VBN 36297 2323 23 slightly slightly RB 36297 2323 24 swollen swell VBN 36297 2323 25 in in IN 36297 2323 26 order order NN 36297 2323 27 to to TO 36297 2323 28 appear appear VB 36297 2323 29 straight straight RB 36297 2323 30 . . . 36297 2324 1 This this DT 36297 2324 2 outward outward JJ 36297 2324 3 curvature curvature NN 36297 2324 4 of of IN 36297 2324 5 the the DT 36297 2324 6 profile profile NN 36297 2324 7 is be VBZ 36297 2324 8 termed term VBN 36297 2324 9 an an DT 36297 2324 10 entasis entasis NN 36297 2324 11 and and CC 36297 2324 12 in in IN 36297 2324 13 the the DT 36297 2324 14 Parthenon Parthenon NNP 36297 2324 15 column column NN 36297 2324 16 , , , 36297 2324 17 which which WDT 36297 2324 18 is be VBZ 36297 2324 19 thirty thirty CD 36297 2324 20 - - HYPH 36297 2324 21 four four CD 36297 2324 22 feet foot NNS 36297 2324 23 in in IN 36297 2324 24 height height NN 36297 2324 25 , , , 36297 2324 26 amounted amount VBD 36297 2324 27 to to IN 36297 2324 28 about about RB 36297 2324 29 three three CD 36297 2324 30 - - HYPH 36297 2324 31 fourths fourth NNS 36297 2324 32 of of IN 36297 2324 33 an an DT 36297 2324 34 inch inch NN 36297 2324 35 . . . 36297 2325 1 In in IN 36297 2325 2 some some DT 36297 2325 3 early early JJ 36297 2325 4 Grecian grecian JJ 36297 2325 5 works work NNS 36297 2325 6 , , , 36297 2325 7 it -PRON- PRP 36297 2325 8 is be VBZ 36297 2325 9 said say VBN 36297 2325 10 that that IN 36297 2325 11 this this DT 36297 2325 12 correction correction NN 36297 2325 13 was be VBD 36297 2325 14 overdone overdone RB 36297 2325 15 but but CC 36297 2325 16 that that IN 36297 2325 17 its -PRON- PRP$ 36297 2325 18 omission omission NN 36297 2325 19 entirely entirely RB 36297 2325 20 is be VBZ 36297 2325 21 quite quite RB 36297 2325 22 unsatisfactory unsatisfactory JJ 36297 2325 23 . . . 36297 2326 1 Some some DT 36297 2326 2 authorities authority NNS 36297 2326 3 appear appear VBP 36297 2326 4 to to TO 36297 2326 5 believe believe VB 36297 2326 6 that that IN 36297 2326 7 an an DT 36297 2326 8 excellent excellent JJ 36297 2326 9 compromise compromise NN 36297 2326 10 is be VBZ 36297 2326 11 found find VBN 36297 2326 12 in in IN 36297 2326 13 the the DT 36297 2326 14 Parthenon Parthenon NNP 36297 2326 15 columns column NNS 36297 2326 16 . . . 36297 2327 1 [ [ -LRB- 36297 2327 2 Illustration illustration NN 36297 2327 3 : : : 36297 2327 4 Fig Fig NNP 36297 2327 5 . . . 36297 2328 1 85.--Exaggerated 85.--Exaggerated NNP 36297 2328 2 illusions illusions NNPS 36297 2328 3 in in IN 36297 2328 4 architecture architecture NN 36297 2328 5 . . . 36297 2328 6 ] ] -RRB- 36297 2329 1 One one CD 36297 2329 2 of of IN 36297 2329 3 the the DT 36297 2329 4 conditions condition NNS 36297 2329 5 which which WDT 36297 2329 6 is be VBZ 36297 2329 7 responsible responsible JJ 36297 2329 8 for for IN 36297 2329 9 certain certain JJ 36297 2329 10 illusions illusion NNS 36297 2329 11 and and CC 36297 2329 12 has have VBZ 36297 2329 13 been be VBN 36297 2329 14 compensated compensate VBN 36297 2329 15 for for IN 36297 2329 16 on on IN 36297 2329 17 occasions occasion NNS 36297 2329 18 is be VBZ 36297 2329 19 represented represent VBN 36297 2329 20 in in IN 36297 2329 21 Fig Fig NNP 36297 2329 22 . . . 36297 2330 1 86 86 CD 36297 2330 2 . . . 36297 2331 1 On on IN 36297 2331 2 the the DT 36297 2331 3 left left NN 36297 2331 4 are be VBP 36297 2331 5 a a DT 36297 2331 6 series series NN 36297 2331 7 of of IN 36297 2331 8 squares square NNS 36297 2331 9 of of IN 36297 2331 10 equal equal JJ 36297 2331 11 size size NN 36297 2331 12 placed place VBN 36297 2331 13 in in IN 36297 2331 14 a a DT 36297 2331 15 vertical vertical JJ 36297 2331 16 row row NN 36297 2331 17 . . . 36297 2332 1 If if IN 36297 2332 2 these these DT 36297 2332 3 are be VBP 36297 2332 4 large large JJ 36297 2332 5 so so IN 36297 2332 6 that that IN 36297 2332 7 they -PRON- PRP 36297 2332 8 might may MD 36297 2332 9 represent represent VB 36297 2332 10 stories story NNS 36297 2332 11 in in IN 36297 2332 12 a a DT 36297 2332 13 building building NN 36297 2332 14 they -PRON- PRP 36297 2332 15 will will MD 36297 2332 16 appear appear VB 36297 2332 17 to to TO 36297 2332 18 decrease decrease VB 36297 2332 19 in in IN 36297 2332 20 size size NN 36297 2332 21 from from IN 36297 2332 22 the the DT 36297 2332 23 bottom bottom NN 36297 2332 24 upward upward RB 36297 2332 25 , , , 36297 2332 26 because because IN 36297 2332 27 of of IN 36297 2332 28 the the DT 36297 2332 29 decreasing decrease VBG 36297 2332 30 projection projection NN 36297 2332 31 at at IN 36297 2332 32 the the DT 36297 2332 33 eye eye NN 36297 2332 34 . . . 36297 2333 1 This this DT 36297 2333 2 is be VBZ 36297 2333 3 obvious obvious JJ 36297 2333 4 if if IN 36297 2333 5 the the DT 36297 2333 6 eye eye NN 36297 2333 7 is be VBZ 36297 2333 8 considered consider VBN 36297 2333 9 to to TO 36297 2333 10 be be VB 36297 2333 11 at at IN 36297 2333 12 the the DT 36297 2333 13 point point NN 36297 2333 14 where where WRB 36297 2333 15 the the DT 36297 2333 16 inclined inclined JJ 36297 2333 17 lines line NNS 36297 2333 18 meet meet VBP 36297 2333 19 . . . 36297 2334 1 In in IN 36297 2334 2 order order NN 36297 2334 3 to to TO 36297 2334 4 compensate compensate VB 36297 2334 5 for for IN 36297 2334 6 the the DT 36297 2334 7 variation variation NN 36297 2334 8 in in IN 36297 2334 9 visual visual JJ 36297 2334 10 angle angle NN 36297 2334 11 , , , 36297 2334 12 there there EX 36297 2334 13 must must MD 36297 2334 14 be be VB 36297 2334 15 a a DT 36297 2334 16 series series NN 36297 2334 17 of of IN 36297 2334 18 rectangles rectangle NNS 36297 2334 19 increasing increase VBG 36297 2334 20 considerably considerably RB 36297 2334 21 in in IN 36297 2334 22 height height NN 36297 2334 23 toward 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2336 26 equal equal JJ 36297 2336 27 size size NN 36297 2336 28 they -PRON- PRP 36297 2336 29 were be VBD 36297 2336 30 actually actually RB 36297 2336 31 increased increase VBN 36297 2336 32 in in IN 36297 2336 33 size size NN 36297 2336 34 toward toward IN 36297 2336 35 the the DT 36297 2336 36 top top NN 36297 2336 37 according accord VBG 36297 2336 38 to to IN 36297 2336 39 the the DT 36297 2336 40 law law NN 36297 2336 41 represented represent VBN 36297 2336 42 in in IN 36297 2336 43 Fig Fig NNP 36297 2336 44 . . . 36297 2337 1 86 86 CD 36297 2337 2 . . . 36297 2338 1 Obviously obviously RB 36297 2338 2 a a DT 36297 2338 3 given give VBN 36297 2338 4 correction correction NN 36297 2338 5 would would MD 36297 2338 6 be be VB 36297 2338 7 correct correct JJ 36297 2338 8 only only RB 36297 2338 9 for for IN 36297 2338 10 one one CD 36297 2338 11 distance distance NN 36297 2338 12 in in IN 36297 2338 13 a a DT 36297 2338 14 given give VBN 36297 2338 15 plane plane NN 36297 2338 16 . . . 36297 2339 1 [ [ -LRB- 36297 2339 2 Illustration illustration NN 36297 2339 3 : : : 36297 2339 4 Fig Fig NNP 36297 2339 5 . . . 36297 2340 1 86.--Illustrating 86.--illustrate VBG 36297 2340 2 the the DT 36297 2340 3 influence influence NN 36297 2340 4 of of IN 36297 2340 5 visual visual JJ 36297 2340 6 angle angle NN 36297 2340 7 upon upon IN 36297 2340 8 apparent apparent JJ 36297 2340 9 vertical vertical JJ 36297 2340 10 height height NN 36297 2340 11 . . . 36297 2340 12 ] ] -RRB- 36297 2341 1 In in IN 36297 2341 2 Chapter chapter NN 36297 2341 3 VIII viii VB 36297 2341 4 the the DT 36297 2341 5 phenomenon phenomenon NN 36297 2341 6 of of IN 36297 2341 7 irradiation irradiation NN 36297 2341 8 was be VBD 36297 2341 9 discussed discuss VBN 36297 2341 10 and and CC 36297 2341 11 various various JJ 36297 2341 12 examples example NNS 36297 2341 13 were be VBD 36297 2341 14 presented present VBN 36297 2341 15 . . . 36297 2342 1 It -PRON- PRP 36297 2342 2 exerts exert VBZ 36297 2342 3 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87 CD 36297 2345 2 where where WRB 36297 2345 3 the the DT 36297 2345 4 white white JJ 36297 2345 5 and and CC 36297 2345 6 the the DT 36297 2345 7 black black JJ 36297 2345 8 columns column NNS 36297 2345 9 are be VBP 36297 2345 10 supposed suppose VBN 36297 2345 11 to to TO 36297 2345 12 be be VB 36297 2345 13 equal equal JJ 36297 2345 14 in in IN 36297 2345 15 diameter diameter NN 36297 2345 16 . . . 36297 2346 1 The the DT 36297 2346 2 careful careful JJ 36297 2346 3 observer observer NN 36297 2346 4 will will MD 36297 2346 5 find find VB 36297 2346 6 numberless numberless JJ 36297 2346 7 optical optical JJ 36297 2346 8 illusions illusion NNS 36297 2346 9 and and CC 36297 2346 10 occasionally occasionally RB 36297 2346 11 he -PRON- PRP 36297 2346 12 will will MD 36297 2346 13 recognize recognize VB 36297 2346 14 an an DT 36297 2346 15 attempt attempt NN 36297 2346 16 on on IN 36297 2346 17 the the DT 36297 2346 18 part part NN 36297 2346 19 of of IN 36297 2346 20 the the DT 36297 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36297 2349 2 the the DT 36297 2349 3 pole pole NN 36297 2349 4 or or CC 36297 2349 5 column column NN 36297 2349 6 intersects intersect VBZ 36297 2349 7 the the DT 36297 2349 8 arches arch NNS 36297 2349 9 or or CC 36297 2349 10 circle circle NN 36297 2349 11 , , , 36297 2349 12 there there EX 36297 2349 13 is be VBZ 36297 2349 14 an an DT 36297 2349 15 apparent apparent JJ 36297 2349 16 change change NN 36297 2349 17 in in IN 36297 2349 18 the the DT 36297 2349 19 direction direction NN 36297 2349 20 of of IN 36297 2349 21 the the DT 36297 2349 22 curved curved JJ 36297 2349 23 lines line NNS 36297 2349 24 . . . 36297 2350 1 The the DT 36297 2350 2 different different JJ 36297 2350 3 types type NNS 36297 2350 4 of of IN 36297 2350 5 arches arch NNS 36297 2350 6 show show VBP 36297 2350 7 different different JJ 36297 2350 8 degrees degree NNS 36297 2350 9 of of IN 36297 2350 10 the the DT 36297 2350 11 illusion illusion NN 36297 2350 12 . . . 36297 2351 1 It -PRON- PRP 36297 2351 2 may may MD 36297 2351 3 be be VB 36297 2351 4 of of IN 36297 2351 5 interest interest NN 36297 2351 6 for for IN 36297 2351 7 the the DT 36297 2351 8 reader reader NN 36297 2351 9 to to TO 36297 2351 10 refer refer VB 36297 2351 11 to to IN 36297 2351 12 preceding precede VBG 36297 2351 13 chapters chapter NNS 36297 2351 14 and and CC 36297 2351 15 to to TO 36297 2351 16 ascertain ascertain VB 36297 2351 17 what what WP 36297 2351 18 types type NNS 36297 2351 19 of of IN 36297 2351 20 illusions illusion NNS 36297 2351 21 are be VBP 36297 2351 22 involved involve VBN 36297 2351 23 . . . 36297 2352 1 [ [ -LRB- 36297 2352 2 Illustration illustration NN 36297 2352 3 : : : 36297 2352 4 Fig Fig NNP 36297 2352 5 . . . 36297 2353 1 87.--Irradiation 87.--irradiation CD 36297 2353 2 in in IN 36297 2353 3 architecture architecture NN 36297 2353 4 . . . 36297 2353 5 ] ] -RRB- 36297 2354 1 If if IN 36297 2354 2 a a DT 36297 2354 3 high high JJ 36297 2354 4 wall wall NN 36297 2354 5 ends end VBZ 36297 2354 6 in in IN 36297 2354 7 a a DT 36297 2354 8 series series NN 36297 2354 9 of of IN 36297 2354 10 long long JJ 36297 2354 11 horizontal horizontal JJ 36297 2354 12 steps step NNS 36297 2354 13 at at IN 36297 2354 14 a a DT 36297 2354 15 slightly slightly RB 36297 2354 16 inclined incline VBN 36297 2354 17 sidewalk sidewalk NN 36297 2354 18 , , , 36297 2354 19 the the DT 36297 2354 20 steps step NNS 36297 2354 21 are be VBP 36297 2354 22 not not RB 36297 2354 23 likely likely JJ 36297 2354 24 to to TO 36297 2354 25 appear appear VB 36297 2354 26 horizontal horizontal JJ 36297 2354 27 . . . 36297 2355 1 Some some DT 36297 2355 2 remarkable remarkable JJ 36297 2355 3 illusions illusion NNS 36297 2355 4 of of IN 36297 2355 5 depth depth NN 36297 2355 6 or or CC 36297 2355 7 of of IN 36297 2355 8 solid solid JJ 36297 2355 9 form form NN 36297 2355 10 are be VBP 36297 2355 11 given give VBN 36297 2355 12 to to IN 36297 2355 13 flat flat JJ 36297 2355 14 surfaces surface NNS 36297 2355 15 when when WRB 36297 2355 16 snow snow NN 36297 2355 17 is be VBZ 36297 2355 18 driven drive VBN 36297 2355 19 against against IN 36297 2355 20 them -PRON- PRP 36297 2355 21 so so IN 36297 2355 22 as as IN 36297 2355 23 to to TO 36297 2355 24 adhere adhere VB 36297 2355 25 in in IN 36297 2355 26 decreasing decrease VBG 36297 2355 27 amounts amount NNS 36297 2355 28 similar similar JJ 36297 2355 29 to to IN 36297 2355 30 shading shade VBG 36297 2355 31 . . . 36297 2356 1 A a DT 36297 2356 2 suggestion suggestion NN 36297 2356 3 of of IN 36297 2356 4 augmented augment VBN 36297 2356 5 height height NN 36297 2356 6 may may MD 36297 2356 7 be be VB 36297 2356 8 given give VBN 36297 2356 9 to to IN 36297 2356 10 a a DT 36297 2356 11 low low JJ 36297 2356 12 tower tower NN 36297 2356 13 by by IN 36297 2356 14 decreasing decrease VBG 36297 2356 15 the the DT 36297 2356 16 size size NN 36297 2356 17 of of IN 36297 2356 18 its -PRON- PRP$ 36297 2356 19 successive successive JJ 36297 2356 20 portions portion NNS 36297 2356 21 more more RBR 36297 2356 22 rapidly rapidly RB 36297 2356 23 than than IN 36297 2356 24 demanded demand VBN 36297 2356 25 by by IN 36297 2356 26 perspective perspective NN 36297 2356 27 alone alone RB 36297 2356 28 . . . 36297 2357 1 The the DT 36297 2357 2 same same JJ 36297 2357 3 principal principal NN 36297 2357 4 can can MD 36297 2357 5 be be VB 36297 2357 6 applied apply VBN 36297 2357 7 in in IN 36297 2357 8 many many JJ 36297 2357 9 ways way NNS 36297 2357 10 . . . 36297 2358 1 For for IN 36297 2358 2 example example NN 36297 2358 3 , , , 36297 2358 4 in in IN 36297 2358 5 Fig Fig NNP 36297 2358 6 . . . 36297 2359 1 89 89 CD 36297 2359 2 the the DT 36297 2359 3 roof roof NN 36297 2359 4 appears appear VBZ 36297 2359 5 quite quite RB 36297 2359 6 extensive extensive JJ 36297 2359 7 when when WRB 36297 2359 8 viewed view VBN 36297 2359 9 so so IN 36297 2359 10 that that IN 36297 2359 11 the the DT 36297 2359 12 end end NN 36297 2359 13 - - HYPH 36297 2359 14 walls wall NNS 36297 2359 15 of of IN 36297 2359 16 the the DT 36297 2359 17 structure structure NN 36297 2359 18 are be VBP 36297 2359 19 not not RB 36297 2359 20 seen see VBN 36297 2359 21 . . . 36297 2360 1 Such such JJ 36297 2360 2 illusions illusion NNS 36297 2360 3 find find VBP 36297 2360 4 applications application NNS 36297 2360 5 in in IN 36297 2360 6 the the DT 36297 2360 7 moving move VBG 36297 2360 8 - - HYPH 36297 2360 9 picture picture NN 36297 2360 10 studio studio NN 36297 2360 11 where where WRB 36297 2360 12 extensive extensive JJ 36297 2360 13 interiors interior NNS 36297 2360 14 , , , 36297 2360 15 great great JJ 36297 2360 16 fortresses fortress NNS 36297 2360 17 , , , 36297 2360 18 and and CC 36297 2360 19 even even RB 36297 2360 20 villages village NNS 36297 2360 21 must must MD 36297 2360 22 be be VB 36297 2360 23 erected erect VBN 36297 2360 24 within within IN 36297 2360 25 small small JJ 36297 2360 26 areas area NNS 36297 2360 27 . . . 36297 2361 1 Incidentally incidentally RB 36297 2361 2 the the DT 36297 2361 3 camera camera NN 36297 2361 4 aids aid VBZ 36297 2361 5 to to TO 36297 2361 6 create create VB 36297 2361 7 the the DT 36297 2361 8 illusion illusion NN 36297 2361 9 of of IN 36297 2361 10 magnitude magnitude NN 36297 2361 11 in in IN 36297 2361 12 photographs photograph NNS 36297 2361 13 because because IN 36297 2361 14 it -PRON- PRP 36297 2361 15 usually usually RB 36297 2361 16 magnifies magnify VBZ 36297 2361 17 perspective perspective NN 36297 2361 18 , , , 36297 2361 19 thereby thereby RB 36297 2361 20 causing cause VBG 36297 2361 21 scenes scene NNS 36297 2361 22 to to TO 36297 2361 23 appear appear VB 36297 2361 24 more more RBR 36297 2361 25 extensive extensive JJ 36297 2361 26 in in IN 36297 2361 27 the the DT 36297 2361 28 photographs photograph NNS 36297 2361 29 than than IN 36297 2361 30 in in IN 36297 2361 31 the the DT 36297 2361 32 reality reality NN 36297 2361 33 . . . 36297 2362 1 [ [ -LRB- 36297 2362 2 Illustration illustration NN 36297 2362 3 : : : 36297 2362 4 Fig Fig NNP 36297 2362 5 . . . 36297 2363 1 88.--Some 88.--some CD 36297 2363 2 simple simple JJ 36297 2363 3 geometrical geometrical JJ 36297 2363 4 - - HYPH 36297 2363 5 optical optical JJ 36297 2363 6 illusions illusion NNS 36297 2363 7 in in IN 36297 2363 8 architecture architecture NN 36297 2363 9 . . . 36297 2363 10 ] ] -RRB- 36297 2364 1 Balance balance NN 36297 2364 2 in in IN 36297 2364 3 architecture architecture NN 36297 2364 4 is be VBZ 36297 2364 5 subject subject JJ 36297 2364 6 to to IN 36297 2364 7 illusions illusion NNS 36297 2364 8 and and CC 36297 2364 9 might may MD 36297 2364 10 be be VB 36297 2364 11 considered consider VBN 36297 2364 12 an an DT 36297 2364 13 illusion illusion NN 36297 2364 14 itself -PRON- PRP 36297 2364 15 . . . 36297 2365 1 For for IN 36297 2365 2 example example NN 36297 2365 3 , , , 36297 2365 4 our -PRON- PRP$ 36297 2365 5 judgment judgment NN 36297 2365 6 of of IN 36297 2365 7 balance balance NN 36297 2365 8 is be VBZ 36297 2365 9 based base VBN 36297 2365 10 largely largely RB 36297 2365 11 upon upon IN 36297 2365 12 mechanical mechanical JJ 36297 2365 13 laws law NNS 36297 2365 14 . . . 36297 2366 1 A a DT 36297 2366 2 composition composition NN 36297 2366 3 must must MD 36297 2366 4 appear appear VB 36297 2366 5 to to TO 36297 2366 6 be be VB 36297 2366 7 stable stable JJ 36297 2366 8 ; ; : 36297 2366 9 that that RB 36297 2366 10 is is RB 36297 2366 11 , , , 36297 2366 12 a a DT 36297 2366 13 large large JJ 36297 2366 14 component component NN 36297 2366 15 such such JJ 36297 2366 16 as as IN 36297 2366 17 a a DT 36297 2366 18 tower tower NN 36297 2366 19 must must MD 36297 2366 20 not not RB 36297 2366 21 be be VB 36297 2366 22 situated situate VBN 36297 2366 23 too too RB 36297 2366 24 far far RB 36297 2366 25 from from IN 36297 2366 26 what what WP 36297 2366 27 we -PRON- PRP 36297 2366 28 take take VBP 36297 2366 29 as as IN 36297 2366 30 a a DT 36297 2366 31 center center NN 36297 2366 32 of of IN 36297 2366 33 gravity gravity NN 36297 2366 34 , , , 36297 2366 35 to to TO 36297 2366 36 appear appear VB 36297 2366 37 capable capable JJ 36297 2366 38 of of IN 36297 2366 39 tipping tip VBG 36297 2366 40 the the DT 36297 2366 41 remainder remainder NN 36297 2366 42 of of IN 36297 2366 43 the the DT 36297 2366 44 structure structure NN 36297 2366 45 . . . 36297 2367 1 In in IN 36297 2367 2 physics physics NN 36297 2367 3 we -PRON- PRP 36297 2367 4 would would MD 36297 2367 5 apply apply VB 36297 2367 6 the the DT 36297 2367 7 term term NN 36297 2367 8 " " `` 36297 2367 9 moment moment NN 36297 2367 10 . . . 36297 2367 11 " " '' 36297 2368 1 Each each DT 36297 2368 2 mass mass NN 36297 2368 3 may may MD 36297 2368 4 be be VB 36297 2368 5 multiplied multiply VBN 36297 2368 6 by by IN 36297 2368 7 its -PRON- PRP$ 36297 2368 8 distance distance NN 36297 2368 9 from from IN 36297 2368 10 the the DT 36297 2368 11 center center NN 36297 2368 12 of of IN 36297 2368 13 gravity gravity NN 36297 2368 14 , , , 36297 2368 15 thus thus RB 36297 2368 16 determining determine VBG 36297 2368 17 its -PRON- PRP$ 36297 2368 18 moment moment NN 36297 2368 19 . . . 36297 2369 1 For for IN 36297 2369 2 a a DT 36297 2369 3 building building NN 36297 2369 4 or or CC 36297 2369 5 other other JJ 36297 2369 6 composition composition NN 36297 2369 7 to to TO 36297 2369 8 appear appear VB 36297 2369 9 stable stable JJ 36297 2369 10 the the DT 36297 2369 11 sum sum NN 36297 2369 12 of of IN 36297 2369 13 these these DT 36297 2369 14 moments moment NNS 36297 2369 15 must must MD 36297 2369 16 be be VB 36297 2369 17 zero zero CD 36297 2369 18 ; ; : 36297 2369 19 that that RB 36297 2369 20 is is RB 36297 2369 21 , , , 36297 2369 22 those those DT 36297 2369 23 tending tend VBG 36297 2369 24 to to TO 36297 2369 25 turn turn VB 36297 2369 26 the the DT 36297 2369 27 figure figure NN 36297 2369 28 in in IN 36297 2369 29 one one CD 36297 2369 30 direction direction NN 36297 2369 31 must must MD 36297 2369 32 be be VB 36297 2369 33 counterbalanced counterbalance VBN 36297 2369 34 by by IN 36297 2369 35 those those DT 36297 2369 36 tending tend VBG 36297 2369 37 to to TO 36297 2369 38 turn turn VB 36297 2369 39 it -PRON- PRP 36297 2369 40 in in IN 36297 2369 41 another another DT 36297 2369 42 direction direction NN 36297 2369 43 . . . 36297 2370 1 In in IN 36297 2370 2 appraising appraise VBG 36297 2370 3 a a DT 36297 2370 4 composition composition NN 36297 2370 5 , , , 36297 2370 6 our -PRON- PRP$ 36297 2370 7 intellect intellect NN 36297 2370 8 summates summate VBZ 36297 2370 9 the the DT 36297 2370 10 effects effect NNS 36297 2370 11 of of IN 36297 2370 12 different different JJ 36297 2370 13 parts part NNS 36297 2370 14 somewhat somewhat RB 36297 2370 15 in in IN 36297 2370 16 this this DT 36297 2370 17 manner manner NN 36297 2370 18 and and CC 36297 2370 19 if if IN 36297 2370 20 satisfactory satisfactory JJ 36297 2370 21 , , , 36297 2370 22 balance balance NN 36297 2370 23 is be VBZ 36297 2370 24 considered consider VBN 36297 2370 25 to to TO 36297 2370 26 have have VB 36297 2370 27 been be VBN 36297 2370 28 attained attain VBN 36297 2370 29 . . . 36297 2371 1 The the DT 36297 2371 2 colors color NNS 36297 2371 3 of of IN 36297 2371 4 the the DT 36297 2371 5 various various JJ 36297 2371 6 components component NNS 36297 2371 7 exert exert VBP 36297 2371 8 an an DT 36297 2371 9 influence influence NN 36297 2371 10 in in IN 36297 2371 11 this this DT 36297 2371 12 respect respect NN 36297 2371 13 , , , 36297 2371 14 so so CC 36297 2371 15 it -PRON- PRP 36297 2371 16 is be VBZ 36297 2371 17 seen see VBN 36297 2371 18 that that IN 36297 2371 19 illusions illusion NNS 36297 2371 20 may may MD 36297 2371 21 have have VB 36297 2371 22 much much JJ 36297 2371 23 to to TO 36297 2371 24 do do VB 36297 2371 25 with with IN 36297 2371 26 the the DT 36297 2371 27 satisfactoriness satisfactoriness NN 36297 2371 28 of of IN 36297 2371 29 architectural architectural JJ 36297 2371 30 compositions composition NNS 36297 2371 31 . . . 36297 2372 1 [ [ -LRB- 36297 2372 2 Illustration illustration NN 36297 2372 3 : : : 36297 2372 4 Fig Fig NNP 36297 2372 5 . . . 36297 2373 1 89.--By 89.--by CD 36297 2373 2 decreasing decrease VBG 36297 2373 3 the the DT 36297 2373 4 exposed expose VBN 36297 2373 5 length length NN 36297 2373 6 of of IN 36297 2373 7 shingles shingle NNS 36297 2373 8 toward toward IN 36297 2373 9 the the DT 36297 2373 10 top top NN 36297 2373 11 a a DT 36297 2373 12 greater great JJR 36297 2373 13 apparent apparent JJ 36297 2373 14 expanse expanse NN 36297 2373 15 is be VBZ 36297 2373 16 obtained obtain VBN 36297 2373 17 . . . 36297 2373 18 ] ] -RRB- 36297 2374 1 Various various JJ 36297 2374 2 illusions illusion NNS 36297 2374 3 of of IN 36297 2374 4 height height NN 36297 2374 5 , , , 36297 2374 6 of of IN 36297 2374 7 ceiling ceiling NN 36297 2374 8 , , , 36297 2374 9 composedness composedness NN 36297 2374 10 , , , 36297 2374 11 etc etc FW 36297 2374 12 . . . 36297 2374 13 , , , 36297 2374 14 may may MD 36297 2374 15 be be VB 36297 2374 16 obtained obtain VBN 36297 2374 17 by by IN 36297 2374 18 the the DT 36297 2374 19 color color NN 36297 2374 20 of of IN 36297 2374 21 the the DT 36297 2374 22 ceiling ceiling NN 36297 2374 23 . . . 36297 2375 1 A a DT 36297 2375 2 dark dark JJ 36297 2375 3 cornice cornice NN 36297 2375 4 in in IN 36297 2375 5 an an DT 36297 2375 6 interior interior NN 36297 2375 7 may may MD 36297 2375 8 appear appear VB 36297 2375 9 to to TO 36297 2375 10 be be VB 36297 2375 11 unsupported unsupported JJ 36297 2375 12 if if IN 36297 2375 13 the the DT 36297 2375 14 walls wall NNS 36297 2375 15 below below RB 36297 2375 16 are be VBP 36297 2375 17 light light JJ 36297 2375 18 in in IN 36297 2375 19 color color NN 36297 2375 20 , , , 36297 2375 21 without without IN 36297 2375 22 any any DT 36297 2375 23 apparent apparent JJ 36297 2375 24 vertical vertical JJ 36297 2375 25 supports support NNS 36297 2375 26 for for IN 36297 2375 27 the the DT 36297 2375 28 cornice cornice NN 36297 2375 29 . . . 36297 2376 1 We -PRON- PRP 36297 2376 2 are be VBP 36297 2376 3 then then RB 36297 2376 4 subjected subject VBN 36297 2376 5 to to IN 36297 2376 6 the the DT 36297 2376 7 illusion illusion NN 36297 2376 8 of of IN 36297 2376 9 instability instability NN 36297 2376 10 or or CC 36297 2376 11 incongruity incongruity NN 36297 2376 12 . . . 36297 2377 1 Dark dark JJ 36297 2377 2 beams beam NNS 36297 2377 3 of of IN 36297 2377 4 ceilings ceiling NNS 36297 2377 5 are be VBP 36297 2377 6 not not RB 36297 2377 7 so so RB 36297 2377 8 obtrusive obtrusive JJ 36297 2377 9 because because IN 36297 2377 10 our -PRON- PRP$ 36297 2377 11 intellect intellect NN 36297 2377 12 tells tell VBZ 36297 2377 13 us -PRON- PRP 36297 2377 14 that that IN 36297 2377 15 they -PRON- PRP 36297 2377 16 are be VBP 36297 2377 17 supports support NNS 36297 2377 18 passing pass VBG 36297 2377 19 over over IN 36297 2377 20 the the DT 36297 2377 21 top top NN 36297 2377 22 of of IN 36297 2377 23 the the DT 36297 2377 24 walls wall NNS 36297 2377 25 and and CC 36297 2377 26 are be VBP 36297 2377 27 therefore therefore RB 36297 2377 28 able able JJ 36297 2377 29 to to TO 36297 2377 30 support support VB 36297 2377 31 themselves -PRON- PRP 36297 2377 32 . . . 36297 2378 1 Color color NN 36297 2378 2 and and CC 36297 2378 3 brightness brightness NN 36297 2378 4 in in IN 36297 2378 5 such such JJ 36297 2378 6 cases case NNS 36297 2378 7 are be VBP 36297 2378 8 very very RB 36297 2378 9 important important JJ 36297 2378 10 . . . 36297 2379 1 The the DT 36297 2379 2 architectural architectural JJ 36297 2379 3 details detail NNS 36297 2379 4 on on IN 36297 2379 5 exteriors exterior NNS 36297 2379 6 evolved evolve VBN 36297 2379 7 under under IN 36297 2379 8 daylighting daylighte VBG 36297 2379 9 outdoors outdoors RB 36297 2379 10 so so IN 36297 2379 11 that that IN 36297 2379 12 their -PRON- PRP$ 36297 2379 13 form form NN 36297 2379 14 has have VBZ 36297 2379 15 been be VBN 36297 2379 16 determined determine VBN 36297 2379 17 by by IN 36297 2379 18 the the DT 36297 2379 19 shadows shadow NNS 36297 2379 20 desired desire VBD 36297 2379 21 . . . 36297 2380 1 The the DT 36297 2380 2 architect architect NN 36297 2380 3 leads lead VBZ 36297 2380 4 his -PRON- PRP$ 36297 2380 5 lights light NNS 36297 2380 6 and and CC 36297 2380 7 shadows shadow NNS 36297 2380 8 around around IN 36297 2380 9 the the DT 36297 2380 10 building building NN 36297 2380 11 modeling model VBG 36297 2380 12 it -PRON- PRP 36297 2380 13 as as IN 36297 2380 14 he -PRON- PRP 36297 2380 15 desires desire VBZ 36297 2380 16 . . . 36297 2381 1 An an DT 36297 2381 2 offset offset NN 36297 2381 3 here here RB 36297 2381 4 and and CC 36297 2381 5 a a DT 36297 2381 6 depression depression NN 36297 2381 7 there there RB 36297 2381 8 models model VBZ 36297 2381 9 the the DT 36297 2381 10 exterior exterior NN 36297 2381 11 in in IN 36297 2381 12 light light NN 36297 2381 13 and and CC 36297 2381 14 shade shade NN 36297 2381 15 . . . 36297 2382 1 The the DT 36297 2382 2 forms form NNS 36297 2382 3 must must MD 36297 2382 4 be be VB 36297 2382 5 powerful powerful JJ 36297 2382 6 enough enough RB 36297 2382 7 to to TO 36297 2382 8 resist resist VB 36297 2382 9 the the DT 36297 2382 10 obliterating obliterate VBG 36297 2382 11 effect effect NN 36297 2382 12 of of IN 36297 2382 13 overcast overcast JJ 36297 2382 14 skies sky NNS 36297 2382 15 but but CC 36297 2382 16 notwithstanding notwithstanding IN 36297 2382 17 all all DT 36297 2382 18 precautions precaution NNS 36297 2382 19 the the DT 36297 2382 20 expression expression NN 36297 2382 21 of of IN 36297 2382 22 an an DT 36297 2382 23 exterior exterior NN 36297 2382 24 varies vary VBZ 36297 2382 25 considerably considerably RB 36297 2382 26 with with IN 36297 2382 27 nature nature NN 36297 2382 28 's 's POS 36297 2382 29 lighting lighting NN 36297 2382 30 . . . 36297 2383 1 Indoors indoor NNS 36297 2383 2 the the DT 36297 2383 3 architect architect NN 36297 2383 4 has have VBZ 36297 2383 5 a a DT 36297 2383 6 powerful powerful JJ 36297 2383 7 controllable controllable JJ 36297 2383 8 medium medium NN 36297 2383 9 in in IN 36297 2383 10 artificial artificial JJ 36297 2383 11 light light NN 36297 2383 12 which which WDT 36297 2383 13 he -PRON- PRP 36297 2383 14 may may MD 36297 2383 15 draw draw VB 36297 2383 16 upon upon IN 36297 2383 17 for for IN 36297 2383 18 producing produce VBG 36297 2383 19 various various JJ 36297 2383 20 expressions expression NNS 36297 2383 21 or or CC 36297 2383 22 moods mood NNS 36297 2383 23 in in IN 36297 2383 24 rooms room NNS 36297 2383 25 . . . 36297 2384 1 The the DT 36297 2384 2 effect effect NN 36297 2384 3 of of IN 36297 2384 4 shadows shadow NNS 36297 2384 5 is be VBZ 36297 2384 6 interesting interesting JJ 36297 2384 7 when when WRB 36297 2384 8 viewing view VBG 36297 2384 9 some some DT 36297 2384 10 structures structure NNS 36297 2384 11 flood flood NN 36297 2384 12 - - HYPH 36297 2384 13 lighted light VBN 36297 2384 14 at at IN 36297 2384 15 night night NN 36297 2384 16 . . . 36297 2385 1 In in IN 36297 2385 2 those those DT 36297 2385 3 cases case NNS 36297 2385 4 where where WRB 36297 2385 5 the the DT 36297 2385 6 light light NN 36297 2385 7 is be VBZ 36297 2385 8 directed direct VBN 36297 2385 9 upward upward RB 36297 2385 10 there there EX 36297 2385 11 is be VBZ 36297 2385 12 a a DT 36297 2385 13 reversal reversal NN 36297 2385 14 of of IN 36297 2385 15 shadows shadow NNS 36297 2385 16 which which WDT 36297 2385 17 is be VBZ 36297 2385 18 sometimes sometimes RB 36297 2385 19 very very RB 36297 2385 20 unsatisfactory unsatisfactory JJ 36297 2385 21 . . . 36297 2386 1 It -PRON- PRP 36297 2386 2 is be VBZ 36297 2386 3 interesting interesting JJ 36297 2386 4 to to TO 36297 2386 5 experiment experiment VB 36297 2386 6 with with IN 36297 2386 7 various various JJ 36297 2386 8 ornamental ornamental JJ 36297 2386 9 objects object NNS 36297 2386 10 lighted light VBN 36297 2386 11 from from IN 36297 2386 12 various various JJ 36297 2386 13 directions direction NNS 36297 2386 14 . . . 36297 2387 1 For for IN 36297 2387 2 example example NN 36297 2387 3 , , , 36297 2387 4 a a DT 36297 2387 5 Corinthian corinthian JJ 36297 2387 6 capital capital NN 36297 2387 7 lighted light VBN 36297 2387 8 from from IN 36297 2387 9 below below IN 36297 2387 10 may may MD 36297 2387 11 produce produce VB 36297 2387 12 an an DT 36297 2387 13 unpleasant unpleasant JJ 36297 2387 14 impression impression NN 36297 2387 15 upon upon IN 36297 2387 16 the the DT 36297 2387 17 observer observer NN 36297 2387 18 . . . 36297 2388 1 We -PRON- PRP 36297 2388 2 do do VBP 36297 2388 3 not not RB 36297 2388 4 like like VB 36297 2388 5 to to TO 36297 2388 6 have have VB 36297 2388 7 the the DT 36297 2388 8 dominant dominant JJ 36297 2388 9 light light NN 36297 2388 10 from from IN 36297 2388 11 below below RB 36297 2388 12 , , , 36297 2388 13 perhaps perhaps RB 36297 2388 14 because because IN 36297 2388 15 it -PRON- PRP 36297 2388 16 is be VBZ 36297 2388 17 annoying annoying JJ 36297 2388 18 to to IN 36297 2388 19 the the DT 36297 2388 20 eyes eye NNS 36297 2388 21 . . . 36297 2389 1 Possibly possibly RB 36297 2389 2 this this DT 36297 2389 3 is be VBZ 36297 2389 4 an an DT 36297 2389 5 instinct instinct NN 36297 2389 6 acquired acquire VBN 36297 2389 7 by by IN 36297 2389 8 experience experience NN 36297 2389 9 in in IN 36297 2389 10 snow snow NN 36297 2389 11 - - HYPH 36297 2389 12 fields field NNS 36297 2389 13 or or CC 36297 2389 14 on on IN 36297 2389 15 the the DT 36297 2389 16 desert desert NN 36297 2389 17 , , , 36297 2389 18 or or CC 36297 2389 19 it -PRON- PRP 36297 2389 20 may may MD 36297 2389 21 be be VB 36297 2389 22 a a DT 36297 2389 23 heritage heritage NN 36297 2389 24 of of IN 36297 2389 25 ancestral ancestral JJ 36297 2389 26 experience experience NN 36297 2389 27 gained gain VBN 36297 2389 28 under under IN 36297 2389 29 these these DT 36297 2389 30 glaring glaring JJ 36297 2389 31 conditions condition NNS 36297 2389 32 . . . 36297 2390 1 This this DT 36297 2390 2 dislike dislike NN 36297 2390 3 manifests manifest VBZ 36297 2390 4 itself -PRON- PRP 36297 2390 5 when when WRB 36297 2390 6 we -PRON- PRP 36297 2390 7 appraise appraise VBP 36297 2390 8 shadow shadow NN 36297 2390 9 - - HYPH 36297 2390 10 effects effect NNS 36297 2390 11 and and CC 36297 2390 12 therefore therefore RB 36297 2390 13 our -PRON- PRP$ 36297 2390 14 final final JJ 36297 2390 15 impression impression NN 36297 2390 16 is be VBZ 36297 2390 17 tempered temper VBN 36297 2390 18 by by IN 36297 2390 19 it -PRON- PRP 36297 2390 20 . . . 36297 2391 1 All all DT 36297 2391 2 sculptured sculptured JJ 36297 2391 3 objects object NNS 36297 2391 4 depend depend VBP 36297 2391 5 for for IN 36297 2391 6 their -PRON- PRP$ 36297 2391 7 appearance appearance NN 36297 2391 8 upon upon IN 36297 2391 9 the the DT 36297 2391 10 lighting lighting NN 36297 2391 11 , , , 36297 2391 12 and and CC 36297 2391 13 they -PRON- PRP 36297 2391 14 are be VBP 36297 2391 15 greatly greatly RB 36297 2391 16 influenced influence VBN 36297 2391 17 by by IN 36297 2391 18 it -PRON- PRP 36297 2391 19 . . . 36297 2392 1 In in IN 36297 2392 2 sculpture sculpture NN 36297 2392 3 , , , 36297 2392 4 in in IN 36297 2392 5 a a DT 36297 2392 6 strict strict JJ 36297 2392 7 sense sense NN 36297 2392 8 , , , 36297 2392 9 illusions illusion NNS 36297 2392 10 play play VBP 36297 2392 11 a a DT 36297 2392 12 lesser less JJR 36297 2392 13 part part NN 36297 2392 14 than than IN 36297 2392 15 in in IN 36297 2392 16 other other JJ 36297 2392 17 arts art NNS 36297 2392 18 . . . 36297 2393 1 Perhaps perhaps RB 36297 2393 2 in in IN 36297 2393 3 those those DT 36297 2393 4 of of IN 36297 2393 5 very very RB 36297 2393 6 large large JJ 36297 2393 7 proportions proportion NNS 36297 2393 8 various various JJ 36297 2393 9 corrections correction NNS 36297 2393 10 have have VBP 36297 2393 11 been be VBN 36297 2393 12 applied apply VBN 36297 2393 13 . . . 36297 2394 1 A a DT 36297 2394 2 minor minor JJ 36297 2394 3 detail detail NN 36297 2394 4 of of IN 36297 2394 5 interest interest NN 36297 2394 6 is be VBZ 36297 2394 7 the the DT 36297 2394 8 small small JJ 36297 2394 9 cavity cavity NN 36297 2394 10 in in IN 36297 2394 11 the the DT 36297 2394 12 eye eye NN 36297 2394 13 , , , 36297 2394 14 corresponding correspond VBG 36297 2394 15 to to IN 36297 2394 16 a a DT 36297 2394 17 reversed reversed JJ 36297 2394 18 cornea cornea NN 36297 2394 19 . . . 36297 2395 1 This this DT 36297 2395 2 depression depression NN 36297 2395 3 catches catch VBZ 36297 2395 4 a a DT 36297 2395 5 shadow shadow NN 36297 2395 6 which which WDT 36297 2395 7 gives give VBZ 36297 2395 8 considerable considerable JJ 36297 2395 9 expression expression NN 36297 2395 10 to to IN 36297 2395 11 the the DT 36297 2395 12 eye eye NN 36297 2395 13 . . . 36297 2396 1 XIV XIV NNP 36297 2396 2 MIRROR MIRROR NNP 36297 2396 3 MAGIC MAGIC NNS 36297 2396 4 Strictly strictly RB 36297 2396 5 speaking speak VBG 36297 2396 6 there there EX 36297 2396 7 are be VBP 36297 2396 8 fewer few JJR 36297 2396 9 illusions illusion NNS 36297 2396 10 found find VBN 36297 2396 11 in in IN 36297 2396 12 the the DT 36297 2396 13 practice practice NN 36297 2396 14 of of IN 36297 2396 15 the the DT 36297 2396 16 magician magician NN 36297 2396 17 than than IN 36297 2396 18 is be VBZ 36297 2396 19 generally generally RB 36297 2396 20 supposed suppose VBN 36297 2396 21 ; ; : 36297 2396 22 that that RB 36297 2396 23 is is RB 36297 2396 24 , , , 36297 2396 25 the the DT 36297 2396 26 eye eye NN 36297 2396 27 usually usually RB 36297 2396 28 delivers deliver VBZ 36297 2396 29 correctly correctly RB 36297 2396 30 to to IN 36297 2396 31 the the DT 36297 2396 32 intellect intellect NN 36297 2396 33 , , , 36297 2396 34 but but CC 36297 2396 35 the the DT 36297 2396 36 judgment judgment NN 36297 2396 37 errs err VBZ 36297 2396 38 for for IN 36297 2396 39 various various JJ 36297 2396 40 reasons reason NNS 36297 2396 41 . . . 36297 2397 1 The the DT 36297 2397 2 " " `` 36297 2397 3 illusion illusion NN 36297 2397 4 " " '' 36297 2397 5 is be VBZ 36297 2397 6 due due JJ 36297 2397 7 to to IN 36297 2397 8 false false JJ 36297 2397 9 assumptions assumption NNS 36297 2397 10 , , , 36297 2397 11 to to IN 36297 2397 12 the the DT 36297 2397 13 distracting distract VBG 36297 2397 14 words word NNS 36297 2397 15 , , , 36297 2397 16 to to IN 36297 2397 17 unduly unduly RB 36297 2397 18 accented accented JJ 36297 2397 19 superfluous superfluous JJ 36297 2397 20 movements movement NNS 36297 2397 21 of of IN 36297 2397 22 the the DT 36297 2397 23 magician magician NN 36297 2397 24 ; ; : 36297 2397 25 or or CC 36297 2397 26 in in IN 36297 2397 27 general general JJ 36297 2397 28 to to TO 36297 2397 29 downright downright RB 36297 2397 30 trickery trickery NN 36297 2397 31 . . . 36297 2398 1 Much much JJ 36297 2398 2 of of IN 36297 2398 3 the the DT 36297 2398 4 magician magician NN 36297 2398 5 's 's POS 36297 2398 6 success success NN 36297 2398 7 is be VBZ 36297 2398 8 due due JJ 36297 2398 9 to to IN 36297 2398 10 glibness glibness NN 36297 2398 11 of of IN 36297 2398 12 tongue tongue NN 36297 2398 13 and and CC 36297 2398 14 deftness deftness NN 36297 2398 15 of of IN 36297 2398 16 fingers finger NNS 36297 2398 17 , , , 36297 2398 18 but but CC 36297 2398 19 many many JJ 36297 2398 20 of of IN 36297 2398 21 the the DT 36297 2398 22 more more RBR 36297 2398 23 notable notable JJ 36297 2398 24 " " `` 36297 2398 25 tricks trick NNS 36297 2398 26 " " '' 36297 2398 27 were be VBD 36297 2398 28 those those DT 36297 2398 29 involving involve VBG 36297 2398 30 the the DT 36297 2398 31 use use NN 36297 2398 32 of of IN 36297 2398 33 mirrors mirror NNS 36297 2398 34 and and CC 36297 2398 35 the the DT 36297 2398 36 control control NN 36297 2398 37 of of IN 36297 2398 38 light light NN 36297 2398 39 . . . 36297 2399 1 Black black JJ 36297 2399 2 curtains curtain NNS 36297 2399 3 , , , 36297 2399 4 blackened blacken VBN 36297 2399 5 assistants assistant NNS 36297 2399 6 , , , 36297 2399 7 and and CC 36297 2399 8 controlled control VBN 36297 2399 9 light light NN 36297 2399 10 have have VBP 36297 2399 11 played play VBN 36297 2399 12 prominent prominent JJ 36297 2399 13 parts part NNS 36297 2399 14 in in IN 36297 2399 15 the the DT 36297 2399 16 older old JJR 36297 2399 17 magic magic NN 36297 2399 18 , , , 36297 2399 19 but but CC 36297 2399 20 the the DT 36297 2399 21 principles principle NNS 36297 2399 22 of of IN 36297 2399 23 these these DT 36297 2399 24 are be VBP 36297 2399 25 easily easily RB 36297 2399 26 understood understand VBN 36297 2399 27 . . . 36297 2400 1 However however RB 36297 2400 2 , , , 36297 2400 3 the the DT 36297 2400 4 mirror mirror NN 36297 2400 5 perhaps perhaps RB 36297 2400 6 has have VBZ 36297 2400 7 done do VBN 36297 2400 8 more more JJR 36297 2400 9 to to TO 36297 2400 10 astound astound VB 36297 2400 11 the the DT 36297 2400 12 audience audience NN 36297 2400 13 than than IN 36297 2400 14 any any DT 36297 2400 15 other other JJ 36297 2400 16 device device NN 36297 2400 17 employed employ VBN 36297 2400 18 by by IN 36297 2400 19 the the DT 36297 2400 20 magician magician NN 36297 2400 21 . . . 36297 2401 1 For for IN 36297 2401 2 this this DT 36297 2401 3 reason reason NN 36297 2401 4 , , , 36297 2401 5 and and CC 36297 2401 6 because because IN 36297 2401 7 its -PRON- PRP$ 36297 2401 8 effects effect NNS 36297 2401 9 are be VBP 36297 2401 10 commonly commonly RB 36297 2401 11 termed term VBN 36297 2401 12 illusions illusion NNS 36297 2401 13 , , , 36297 2401 14 some some DT 36297 2401 15 representative representative JJ 36297 2401 16 examples example NNS 36297 2401 17 will will MD 36297 2401 18 be be VB 36297 2401 19 presented present VBN 36297 2401 20 . . . 36297 2402 1 In in IN 36297 2402 2 a a DT 36297 2402 3 previous previous JJ 36297 2402 4 chapter chapter NN 36297 2402 5 attention attention NN 36297 2402 6 was be VBD 36297 2402 7 called call VBN 36297 2402 8 to to IN 36297 2402 9 the the DT 36297 2402 10 simple simple JJ 36297 2402 11 but but CC 36297 2402 12 usually usually RB 36297 2402 13 overlooked overlook VBD 36297 2402 14 fact fact NN 36297 2402 15 that that IN 36297 2402 16 , , , 36297 2402 17 for for IN 36297 2402 18 example example NN 36297 2402 19 , , , 36297 2402 20 the the DT 36297 2402 21 image image NN 36297 2402 22 of of IN 36297 2402 23 a a DT 36297 2402 24 face face NN 36297 2402 25 in in IN 36297 2402 26 a a DT 36297 2402 27 mirror mirror NN 36297 2402 28 is be VBZ 36297 2402 29 reversed reverse VBN 36297 2402 30 as as IN 36297 2402 31 to to IN 36297 2402 32 right right NN 36297 2402 33 and and CC 36297 2402 34 left leave VBD 36297 2402 35 . . . 36297 2403 1 When when WRB 36297 2403 2 this this DT 36297 2403 3 fact fact NN 36297 2403 4 is be VBZ 36297 2403 5 overlooked overlook VBN 36297 2403 6 we -PRON- PRP 36297 2403 7 may may MD 36297 2403 8 be be VB 36297 2403 9 astonished astonish VBN 36297 2403 10 at at IN 36297 2403 11 the the DT 36297 2403 12 changed change VBN 36297 2403 13 expression expression NN 36297 2403 14 of of IN 36297 2403 15 an an DT 36297 2403 16 intimate intimate JJ 36297 2403 17 friend friend NN 36297 2403 18 as as IN 36297 2403 19 we -PRON- PRP 36297 2403 20 view view VBP 36297 2403 21 the the DT 36297 2403 22 face face NN 36297 2403 23 ( ( -LRB- 36297 2403 24 reversed reverse VBN 36297 2403 25 ) ) -RRB- 36297 2403 26 in in IN 36297 2403 27 the the DT 36297 2403 28 mirror mirror NN 36297 2403 29 . . . 36297 2404 1 Similarly similarly RB 36297 2404 2 our -PRON- PRP$ 36297 2404 3 own own JJ 36297 2404 4 features feature NNS 36297 2404 5 are be VBP 36297 2404 6 reversed reverse VBN 36297 2404 7 as as IN 36297 2404 8 to to IN 36297 2404 9 right right NN 36297 2404 10 and and CC 36297 2404 11 left leave VBD 36297 2404 12 and and CC 36297 2404 13 we -PRON- PRP 36297 2404 14 are be VBP 36297 2404 15 acquainted acquaint VBN 36297 2404 16 with with IN 36297 2404 17 this this DT 36297 2404 18 reversed reverse VBN 36297 2404 19 image image NN 36297 2404 20 rather rather RB 36297 2404 21 than than IN 36297 2404 22 the the DT 36297 2404 23 appearance appearance NN 36297 2404 24 of of IN 36297 2404 25 our -PRON- PRP$ 36297 2404 26 face face NN 36297 2404 27 as as IN 36297 2404 28 it -PRON- PRP 36297 2404 29 is be VBZ 36297 2404 30 . . . 36297 2405 1 Inasmuch inasmuch JJ 36297 2405 2 as as IN 36297 2405 3 faces face NNS 36297 2405 4 are be VBP 36297 2405 5 not not RB 36297 2405 6 accurately accurately RB 36297 2405 7 symmetrical symmetrical JJ 36297 2405 8 and and CC 36297 2405 9 many many JJ 36297 2405 10 are be VBP 36297 2405 11 quite quite RB 36297 2405 12 unsymmetrical unsymmetrical JJ 36297 2405 13 the the DT 36297 2405 14 effects effect NNS 36297 2405 15 of of IN 36297 2405 16 the the DT 36297 2405 17 mirror mirror NN 36297 2405 18 are be VBP 36297 2405 19 sometimes sometimes RB 36297 2405 20 startling startling JJ 36297 2405 21 . . . 36297 2406 1 It -PRON- PRP 36297 2406 2 might may MD 36297 2406 3 be be VB 36297 2406 4 of of IN 36297 2406 5 interest interest NN 36297 2406 6 for for IN 36297 2406 7 the the DT 36297 2406 8 reader reader NN 36297 2406 9 to to TO 36297 2406 10 study study VB 36297 2406 11 his -PRON- PRP$ 36297 2406 12 face face NN 36297 2406 13 in in IN 36297 2406 14 the the DT 36297 2406 15 mirror mirror NN 36297 2406 16 and and CC 36297 2406 17 note note VB 36297 2406 18 that that IN 36297 2406 19 the the DT 36297 2406 20 right right JJ 36297 2406 21 ear ear NN 36297 2406 22 is be VBZ 36297 2406 23 the the DT 36297 2406 24 left left JJ 36297 2406 25 ear ear NN 36297 2406 26 of of IN 36297 2406 27 the the DT 36297 2406 28 image image NN 36297 2406 29 which which WDT 36297 2406 30 he -PRON- PRP 36297 2406 31 sees see VBZ 36297 2406 32 . . . 36297 2407 1 He -PRON- PRP 36297 2407 2 will will MD 36297 2407 3 also also RB 36297 2407 4 find find VB 36297 2407 5 it -PRON- PRP 36297 2407 6 of of IN 36297 2407 7 interest interest NN 36297 2407 8 to to TO 36297 2407 9 compare compare VB 36297 2407 10 the the DT 36297 2407 11 face face NN 36297 2407 12 of of IN 36297 2407 13 a a DT 36297 2407 14 friend friend NN 36297 2407 15 as as IN 36297 2407 16 viewed view VBN 36297 2407 17 directly directly RB 36297 2407 18 with with IN 36297 2407 19 the the DT 36297 2407 20 appearance appearance NN 36297 2407 21 of of IN 36297 2407 22 its -PRON- PRP$ 36297 2407 23 image image NN 36297 2407 24 in in IN 36297 2407 25 the the DT 36297 2407 26 mirror mirror NN 36297 2407 27 . . . 36297 2408 1 If if IN 36297 2408 2 he -PRON- PRP 36297 2408 3 desires desire VBZ 36297 2408 4 to to TO 36297 2408 5 see see VB 36297 2408 6 himself -PRON- PRP 36297 2408 7 as as IN 36297 2408 8 others other NNS 36297 2408 9 see see VBP 36297 2408 10 him -PRON- PRP 36297 2408 11 , , , 36297 2408 12 he -PRON- PRP 36297 2408 13 can can MD 36297 2408 14 arrange arrange VB 36297 2408 15 two two CD 36297 2408 16 mirrors mirror NNS 36297 2408 17 vertically vertically RB 36297 2408 18 almost almost RB 36297 2408 19 at at IN 36297 2408 20 a a DT 36297 2408 21 right right JJ 36297 2408 22 - - HYPH 36297 2408 23 angle angle NN 36297 2408 24 . . . 36297 2409 1 By by IN 36297 2409 2 a a DT 36297 2409 3 little little JJ 36297 2409 4 research research NN 36297 2409 5 he -PRON- PRP 36297 2409 6 will will MD 36297 2409 7 find find VB 36297 2409 8 an an DT 36297 2409 9 image image NN 36297 2409 10 of of IN 36297 2409 11 his -PRON- PRP$ 36297 2409 12 own own JJ 36297 2409 13 face face NN 36297 2409 14 , , , 36297 2409 15 which which WDT 36297 2409 16 is be VBZ 36297 2409 17 not not RB 36297 2409 18 reversed reverse VBN 36297 2409 19 ; ; : 36297 2409 20 that that RB 36297 2409 21 is is RB 36297 2409 22 , , , 36297 2409 23 an an DT 36297 2409 24 image image NN 36297 2409 25 whose whose WP$ 36297 2409 26 right right JJ 36297 2409 27 ear ear NN 36297 2409 28 is be VBZ 36297 2409 29 really really RB 36297 2409 30 his -PRON- PRP$ 36297 2409 31 right right JJ 36297 2409 32 ear ear NN 36297 2409 33 . . . 36297 2410 1 A a DT 36297 2410 2 famous famous JJ 36297 2410 3 " " `` 36297 2410 4 illusion illusion NN 36297 2410 5 " " '' 36297 2410 6 which which WDT 36297 2410 7 astounded astound VBD 36297 2410 8 audiences audience NNS 36297 2410 9 was be VBD 36297 2410 10 the the DT 36297 2410 11 sphinx sphinx NN 36297 2410 12 illustrated illustrate VBN 36297 2410 13 in in IN 36297 2410 14 Fig Fig NNP 36297 2410 15 . . . 36297 2411 1 90 90 CD 36297 2411 2 . . . 36297 2412 1 The the DT 36297 2412 2 box box NN 36297 2412 3 was be VBD 36297 2412 4 placed place VBN 36297 2412 5 upon upon IN 36297 2412 6 a a DT 36297 2412 7 table table NN 36297 2412 8 and and CC 36297 2412 9 when when WRB 36297 2412 10 opened open VBN 36297 2412 11 there there EX 36297 2412 12 was be VBD 36297 2412 13 revealed reveal VBN 36297 2412 14 a a DT 36297 2412 15 Sphinxian sphinxian JJ 36297 2412 16 head head NN 36297 2412 17 , , , 36297 2412 18 but but CC 36297 2412 19 why why WRB 36297 2412 20 it -PRON- PRP 36297 2412 21 was be VBD 36297 2412 22 called call VBN 36297 2412 23 a a DT 36297 2412 24 Sphinx Sphinx NNP 36297 2412 25 is be VBZ 36297 2412 26 clothed clothe VBN 36297 2412 27 in in IN 36297 2412 28 mystery mystery NN 36297 2412 29 because because IN 36297 2412 30 upon upon IN 36297 2412 31 some some DT 36297 2412 32 occasions occasion NNS 36297 2412 33 it -PRON- PRP 36297 2412 34 talked talk VBD 36297 2412 35 . . . 36297 2413 1 As as IN 36297 2413 2 a a DT 36297 2413 3 matter matter NN 36297 2413 4 of of IN 36297 2413 5 fact fact NN 36297 2413 6 it -PRON- PRP 36297 2413 7 belonged belong VBD 36297 2413 8 to to IN 36297 2413 9 a a DT 36297 2413 10 body body NN 36297 2413 11 which which WDT 36297 2413 12 extended extend VBD 36297 2413 13 downward downward RB 36297 2413 14 from from IN 36297 2413 15 the the DT 36297 2413 16 table table NN 36297 2413 17 - - HYPH 36297 2413 18 top top NN 36297 2413 19 and and CC 36297 2413 20 this this DT 36297 2413 21 kneeling kneel VBG 36297 2413 22 human human NN 36297 2413 23 being being NN 36297 2413 24 was be VBD 36297 2413 25 concealed conceal VBN 36297 2413 26 from from IN 36297 2413 27 the the DT 36297 2413 28 audience audience NN 36297 2413 29 by by IN 36297 2413 30 two two CD 36297 2413 31 very very RB 36297 2413 32 clean clean JJ 36297 2413 33 plate plate NN 36297 2413 34 - - HYPH 36297 2413 35 glass glass NN 36297 2413 36 mirrors mirror NNS 36297 2413 37 _ _ NNP 36297 2413 38 M M NNP 36297 2413 39 _ _ NNP 36297 2413 40 shown show VBN 36297 2413 41 in in IN 36297 2413 42 the the DT 36297 2413 43 accompanying accompany VBG 36297 2413 44 diagram diagram NN 36297 2413 45 . . . 36297 2414 1 The the DT 36297 2414 2 table table NN 36297 2414 3 actually actually RB 36297 2414 4 appeared appear VBD 36297 2414 5 to to TO 36297 2414 6 have have VB 36297 2414 7 three three CD 36297 2414 8 legs leg NNS 36297 2414 9 but but CC 36297 2414 10 the the DT 36297 2414 11 audience audience NN 36297 2414 12 if if IN 36297 2414 13 it -PRON- PRP 36297 2414 14 noticed notice VBD 36297 2414 15 this this DT 36297 2414 16 at at RB 36297 2414 17 all all RB 36297 2414 18 assumed assume VBD 36297 2414 19 the the DT 36297 2414 20 fourth fourth JJ 36297 2414 21 leg leg NN 36297 2414 22 was be VBD 36297 2414 23 obscured obscure VBN 36297 2414 24 by by IN 36297 2414 25 the the DT 36297 2414 26 foremost foremost JJ 36297 2414 27 leg leg NN 36297 2414 28 . . . 36297 2415 1 The the DT 36297 2415 2 walls wall NNS 36297 2415 3 , , , 36297 2415 4 floor floor NN 36297 2415 5 , , , 36297 2415 6 and and CC 36297 2415 7 ceiling ceiling NN 36297 2415 8 of of IN 36297 2415 9 the the DT 36297 2415 10 box box NN 36297 2415 11 - - HYPH 36297 2415 12 like like JJ 36297 2415 13 recess recess NN 36297 2415 14 in in IN 36297 2415 15 which which WDT 36297 2415 16 the the DT 36297 2415 17 table table NN 36297 2415 18 was be VBD 36297 2415 19 placed place VBN 36297 2415 20 were be VBD 36297 2415 21 covered cover VBN 36297 2415 22 with with IN 36297 2415 23 the the DT 36297 2415 24 same same JJ 36297 2415 25 material material NN 36297 2415 26 . . . 36297 2416 1 It -PRON- PRP 36297 2416 2 is be VBZ 36297 2416 3 seen see VBN 36297 2416 4 by by IN 36297 2416 5 the the DT 36297 2416 6 diagram diagram NN 36297 2416 7 that that IN 36297 2416 8 the the DT 36297 2416 9 mirrors mirror NNS 36297 2416 10 _ _ NNP 36297 2416 11 M M NNP 36297 2416 12 _ _ NNP 36297 2416 13 reflected reflect VBD 36297 2416 14 images image NNS 36297 2416 15 of of IN 36297 2416 16 the the DT 36297 2416 17 side side NN 36297 2416 18 walls wall NNS 36297 2416 19 _ _ NNP 36297 2416 20 W W NNP 36297 2416 21 _ _ NNP 36297 2416 22 and and CC 36297 2416 23 these these DT 36297 2416 24 images image NNS 36297 2416 25 were be VBD 36297 2416 26 taken take VBN 36297 2416 27 by by IN 36297 2416 28 the the DT 36297 2416 29 audience audience NN 36297 2416 30 to to TO 36297 2416 31 be be VB 36297 2416 32 portions portion NNS 36297 2416 33 of of IN 36297 2416 34 the the DT 36297 2416 35 rear rear JJ 36297 2416 36 wall wall NN 36297 2416 37 _ _ NNP 36297 2416 38 W W NNP 36297 2416 39 _ _ NNP 36297 2416 40 . . . 36297 2417 1 Thus thus RB 36297 2417 2 the the DT 36297 2417 3 table table NN 36297 2417 4 appeared appear VBD 36297 2417 5 to to TO 36297 2417 6 be be VB 36297 2417 7 open open JJ 36297 2417 8 underneath underneath IN 36297 2417 9 and and CC 36297 2417 10 the the DT 36297 2417 11 possibilities possibility NNS 36297 2417 12 of of IN 36297 2417 13 the the DT 36297 2417 14 apparatus apparatus NN 36297 2417 15 are be VBP 36297 2417 16 evident evident JJ 36297 2417 17 . . . 36297 2418 1 [ [ -LRB- 36297 2418 2 Illustration illustration NN 36297 2418 3 : : : 36297 2418 4 Fig Fig NNP 36297 2418 5 . . . 36297 2419 1 90.--An 90.--an CD 36297 2419 2 example example NN 36297 2419 3 of of IN 36297 2419 4 a a DT 36297 2419 5 " " `` 36297 2419 6 mirror mirror NN 36297 2419 7 " " '' 36297 2419 8 illusion illusion NN 36297 2419 9 . . . 36297 2419 10 ] ] -RRB- 36297 2420 1 The the DT 36297 2420 2 magician magician NN 36297 2420 3 with with IN 36297 2420 4 a a DT 36297 2420 5 fine fine JJ 36297 2420 6 flow flow NN 36297 2420 7 of of IN 36297 2420 8 language language NN 36297 2420 9 could could MD 36297 2420 10 dwell dwell VB 36297 2420 11 at at IN 36297 2420 12 length length NN 36297 2420 13 upon upon IN 36297 2420 14 the the DT 36297 2420 15 coming come VBG 36297 2420 16 to to IN 36297 2420 17 life life NN 36297 2420 18 of of IN 36297 2420 19 the the DT 36297 2420 20 head head NN 36297 2420 21 of of IN 36297 2420 22 an an DT 36297 2420 23 ancient ancient JJ 36297 2420 24 statue statue NN 36297 2420 25 which which WDT 36297 2420 26 he -PRON- PRP 36297 2420 27 had have VBD 36297 2420 28 in in IN 36297 2420 29 the the DT 36297 2420 30 box box NN 36297 2420 31 in in IN 36297 2420 32 his -PRON- PRP$ 36297 2420 33 hand hand NN 36297 2420 34 . . . 36297 2421 1 Walking walk VBG 36297 2421 2 to to IN 36297 2421 3 the the DT 36297 2421 4 table table NN 36297 2421 5 he -PRON- PRP 36297 2421 6 could could MD 36297 2421 7 place place VB 36297 2421 8 the the DT 36297 2421 9 box box NN 36297 2421 10 over over IN 36297 2421 11 a a DT 36297 2421 12 trap trap NN 36297 2421 13 - - HYPH 36297 2421 14 door door NN 36297 2421 15 and and CC 36297 2421 16 by by IN 36297 2421 17 the the DT 36297 2421 18 time time NN 36297 2421 19 he -PRON- PRP 36297 2421 20 had have VBD 36297 2421 21 unlatched unlatched JJ 36297 2421 22 the the DT 36297 2421 23 door door NN 36297 2421 24 of of IN 36297 2421 25 the the DT 36297 2421 26 box box NN 36297 2421 27 , , , 36297 2421 28 the the DT 36297 2421 29 assistant assistant NN 36297 2421 30 kneeling kneel VBG 36297 2421 31 under under IN 36297 2421 32 the the DT 36297 2421 33 table table NN 36297 2421 34 could could MD 36297 2421 35 have have VB 36297 2421 36 his -PRON- PRP$ 36297 2421 37 head head NN 36297 2421 38 thrust thrust VBN 36297 2421 39 upward upward RB 36297 2421 40 through through IN 36297 2421 41 the the DT 36297 2421 42 trap trap NN 36297 2421 43 - - HYPH 36297 2421 44 door door NN 36297 2421 45 of of IN 36297 2421 46 the the DT 36297 2421 47 table table NN 36297 2421 48 - - HYPH 36297 2421 49 top top NN 36297 2421 50 into into IN 36297 2421 51 the the DT 36297 2421 52 box box NN 36297 2421 53 . . . 36297 2422 1 After after IN 36297 2422 2 a a DT 36297 2422 3 few few JJ 36297 2422 4 impressive impressive JJ 36297 2422 5 words word NNS 36297 2422 6 , , , 36297 2422 7 supposed suppose VBN 36297 2422 8 to to TO 36297 2422 9 be be VB 36297 2422 10 Hindoo Hindoo NNP 36297 2422 11 but but CC 36297 2422 12 in in IN 36297 2422 13 reality reality NN 36297 2422 14 were be VBD 36297 2422 15 Hoodoo hoodoo JJ 36297 2422 16 , , , 36297 2422 17 presto presto JJ 36297 2422 18 ! ! . 36297 2423 1 and and CC 36297 2423 2 the the DT 36297 2423 3 Sphinx Sphinx NNP 36297 2423 4 was be VBD 36297 2423 5 revealed reveal VBN 36297 2423 6 . . . 36297 2424 1 It -PRON- PRP 36297 2424 2 conversed converse VBD 36297 2424 3 after after IN 36297 2424 4 a a DT 36297 2424 5 period period NN 36297 2424 6 of of IN 36297 2424 7 silence silence NN 36297 2424 8 extending extend VBG 36297 2424 9 back back RB 36297 2424 10 to to IN 36297 2424 11 the the DT 36297 2424 12 days day NNS 36297 2424 13 of of IN 36297 2424 14 Rameses ramese NNS 36297 2424 15 when when WRB 36297 2424 16 a a DT 36297 2424 17 wrathful wrathful JJ 36297 2424 18 god god NNP 36297 2424 19 condemned condemn VBD 36297 2424 20 an an DT 36297 2424 21 unfortunate unfortunate JJ 36297 2424 22 king king NN 36297 2424 23 to to TO 36297 2424 24 imprisonment imprisonment VB 36297 2424 25 in in IN 36297 2424 26 the the DT 36297 2424 27 stone stone NN 36297 2424 28 statue statue NN 36297 2424 29 . . . 36297 2425 1 The the DT 36297 2425 2 original original JJ 36297 2425 3 trick trick NN 36297 2425 4 awed awe VBD 36297 2425 5 audiences audience NNS 36297 2425 6 for for IN 36297 2425 7 many many JJ 36297 2425 8 nights night NNS 36297 2425 9 and and CC 36297 2425 10 defied defy VBD 36297 2425 11 explanation explanation NN 36297 2425 12 until until IN 36297 2425 13 one one CD 36297 2425 14 night night NN 36297 2425 15 a a DT 36297 2425 16 keen keen JJ 36297 2425 17 observer observer NN 36297 2425 18 noted note VBD 36297 2425 19 finger finger NN 36297 2425 20 - - HYPH 36297 2425 21 prints print NNS 36297 2425 22 on on IN 36297 2425 23 what what WP 36297 2425 24 proved prove VBD 36297 2425 25 to to TO 36297 2425 26 be be VB 36297 2425 27 a a DT 36297 2425 28 mirror mirror NN 36297 2425 29 . . . 36297 2426 1 Doubtless doubtless RB 36297 2426 2 a a DT 36297 2426 3 careless careless JJ 36297 2426 4 accomplice accomplice NN 36297 2426 5 lost lose VBD 36297 2426 6 his -PRON- PRP$ 36297 2426 7 job job NN 36297 2426 8 , , , 36297 2426 9 but but CC 36297 2426 10 the the DT 36297 2426 11 damage damage NN 36297 2426 12 had have VBD 36297 2426 13 been be VBN 36297 2426 14 done do VBN 36297 2426 15 , , , 36297 2426 16 for for IN 36297 2426 17 the the DT 36297 2426 18 trick trick NN 36297 2426 19 was be VBD 36297 2426 20 revealed reveal VBN 36297 2426 21 . . . 36297 2427 1 This this DT 36297 2427 2 " " `` 36297 2427 3 illusion illusion NN 36297 2427 4 " " '' 36297 2427 5 is be VBZ 36297 2427 6 so so RB 36297 2427 7 effective effective JJ 36297 2427 8 that that IN 36297 2427 9 it -PRON- PRP 36297 2427 10 , , , 36297 2427 11 or or CC 36297 2427 12 variations variation NNS 36297 2427 13 of of IN 36297 2427 14 it -PRON- PRP 36297 2427 15 , , , 36297 2427 16 are be VBP 36297 2427 17 still still RB 36297 2427 18 in in IN 36297 2427 19 use use NN 36297 2427 20 . . . 36297 2428 1 [ [ -LRB- 36297 2428 2 Illustration illustration NN 36297 2428 3 : : : 36297 2428 4 Fig Fig NNP 36297 2428 5 . . . 36297 2429 1 91.--Another 91.--another CD 36297 2429 2 example example NN 36297 2429 3 of of IN 36297 2429 4 " " `` 36297 2429 5 mirror mirror NNP 36297 2429 6 magic magic NNP 36297 2429 7 . . . 36297 2429 8 " " '' 36297 2429 9 ] ] -RRB- 36297 2430 1 Another another DT 36297 2430 2 simple simple JJ 36297 2430 3 case case NN 36297 2430 4 is be VBZ 36297 2430 5 illustrated illustrate VBN 36297 2430 6 in in IN 36297 2430 7 Fig Fig NNP 36297 2430 8 . . . 36297 2431 1 91 91 CD 36297 2431 2 . . . 36297 2432 1 A a DT 36297 2432 2 large large JJ 36297 2432 3 plate plate NN 36297 2432 4 - - HYPH 36297 2432 5 glass glass NN 36297 2432 6 mirror mirror NN 36297 2432 7 _ _ NNP 36297 2432 8 M M NNP 36297 2432 9 _ _ NNP 36297 2432 10 was be VBD 36297 2432 11 placed place VBN 36297 2432 12 at at IN 36297 2432 13 an an DT 36297 2432 14 angle angle NN 36297 2432 15 of of IN 36297 2432 16 approximately approximately RB 36297 2432 17 45 45 CD 36297 2432 18 degrees degree NNS 36297 2432 19 from from IN 36297 2432 20 the the DT 36297 2432 21 floor floor NN 36297 2432 22 . . . 36297 2433 1 Through through IN 36297 2433 2 a a DT 36297 2433 3 hole hole NN 36297 2433 4 in in IN 36297 2433 5 it -PRON- PRP 36297 2433 6 an an DT 36297 2433 7 assistant assistant NN 36297 2433 8 's 's POS 36297 2433 9 head head NN 36297 2433 10 and and CC 36297 2433 11 shoulders shoulder NNS 36297 2433 12 projected project VBD 36297 2433 13 and and CC 36297 2433 14 the the DT 36297 2433 15 edge edge NN 36297 2433 16 of of IN 36297 2433 17 the the DT 36297 2433 18 opening opening NN 36297 2433 19 was be VBD 36297 2433 20 covered cover VBN 36297 2433 21 with with IN 36297 2433 22 a a DT 36297 2433 23 draped draped JJ 36297 2433 24 cloth cloth NN 36297 2433 25 . . . 36297 2434 1 The the DT 36297 2434 2 audience audience NN 36297 2434 3 saw see VBD 36297 2434 4 the the DT 36297 2434 5 image image NN 36297 2434 6 of of IN 36297 2434 7 the the DT 36297 2434 8 ceiling ceiling NN 36297 2434 9 _ _ NNP 36297 2434 10 C C NNP 36297 2434 11 _ _ NNP 36297 2434 12 of of IN 36297 2434 13 the the DT 36297 2434 14 alcove alcove NN 36297 2434 15 reflected reflect VBN 36297 2434 16 by by IN 36297 2434 17 the the DT 36297 2434 18 mirror mirror NN 36297 2434 19 but but CC 36297 2434 20 being be VBG 36297 2434 21 ignorant ignorant JJ 36297 2434 22 of of IN 36297 2434 23 the the DT 36297 2434 24 presence presence NN 36297 2434 25 of of IN 36297 2434 26 the the DT 36297 2434 27 mirror mirror NN 36297 2434 28 , , , 36297 2434 29 assumed assume VBD 36297 2434 30 this this DT 36297 2434 31 image image NN 36297 2434 32 to to TO 36297 2434 33 be be VB 36297 2434 34 the the DT 36297 2434 35 rear rear JJ 36297 2434 36 wall wall NN 36297 2434 37 . . . 36297 2435 1 This this DT 36297 2435 2 trick trick NN 36297 2435 3 was be VBD 36297 2435 4 effective effective JJ 36297 2435 5 for for IN 36297 2435 6 many many JJ 36297 2435 7 years year NNS 36297 2435 8 . . . 36297 2436 1 Obviously obviously RB 36297 2436 2 the the DT 36297 2436 3 mirrors mirror NNS 36297 2436 4 must must MD 36297 2436 5 be be VB 36297 2436 6 spotlessly spotlessly RB 36297 2436 7 clean clean JJ 36297 2436 8 and and CC 36297 2436 9 the the DT 36297 2436 10 illuminations illumination NNS 36297 2436 11 of of IN 36297 2436 12 the the DT 36297 2436 13 walls wall NNS 36297 2436 14 , , , 36297 2436 15 ceiling ceiling NN 36297 2436 16 , , , 36297 2436 17 and and CC 36297 2436 18 in in IN 36297 2436 19 some some DT 36297 2436 20 cases case NNS 36297 2436 21 , , , 36297 2436 22 the the DT 36297 2436 23 floor floor NN 36297 2436 24 must must MD 36297 2436 25 be be VB 36297 2436 26 very very RB 36297 2436 27 uniform uniform JJ 36297 2436 28 . . . 36297 2437 1 Furthermore furthermore RB 36297 2437 2 , , , 36297 2437 3 no no DT 36297 2437 4 large large JJ 36297 2437 5 conspicuous conspicuous JJ 36297 2437 6 pattern pattern NN 36297 2437 7 could could MD 36297 2437 8 be be VB 36297 2437 9 used use VBN 36297 2437 10 for for IN 36297 2437 11 lining line VBG 36297 2437 12 the the DT 36297 2437 13 box box NN 36297 2437 14 - - HYPH 36297 2437 15 like like JJ 36297 2437 16 recess recess NN 36297 2437 17 . . . 36297 2438 1 The the DT 36297 2438 2 foregoing foregoing NN 36297 2438 3 examples example NNS 36297 2438 4 illustrate illustrate VBP 36297 2438 5 the the DT 36297 2438 6 principles principle NNS 36297 2438 7 involved involve VBN 36297 2438 8 in in IN 36297 2438 9 the the DT 36297 2438 10 appearance appearance NN 36297 2438 11 of of IN 36297 2438 12 ghosts ghost NNS 36297 2438 13 on on IN 36297 2438 14 the the DT 36297 2438 15 stage stage NN 36297 2438 16 and and CC 36297 2438 17 of of IN 36297 2438 18 a a DT 36297 2438 19 skeleton skeleton NN 36297 2438 20 or or CC 36297 2438 21 other other JJ 36297 2438 22 gruesome gruesome JJ 36297 2438 23 object object NN 36297 2438 24 in in IN 36297 2438 25 place place NN 36297 2438 26 of of IN 36297 2438 27 a a DT 36297 2438 28 human human JJ 36297 2438 29 being being NN 36297 2438 30 . . . 36297 2439 1 The the DT 36297 2439 2 possibilities possibility NNS 36297 2439 3 of of IN 36297 2439 4 mirrors mirror NNS 36297 2439 5 in in IN 36297 2439 6 such such JJ 36297 2439 7 fields field NNS 36297 2439 8 are be VBP 36297 2439 9 endless endless JJ 36297 2439 10 and and CC 36297 2439 11 they -PRON- PRP 36297 2439 12 can can MD 36297 2439 13 be be VB 36297 2439 14 studied study VBN 36297 2439 15 on on IN 36297 2439 16 a a DT 36297 2439 17 small small JJ 36297 2439 18 scale scale NN 36297 2439 19 by by IN 36297 2439 20 anyone anyone NN 36297 2439 21 interested interested JJ 36297 2439 22 . . . 36297 2440 1 The the DT 36297 2440 2 pseudoscope pseudoscope NN 36297 2440 3 which which WDT 36297 2440 4 produces produce VBZ 36297 2440 5 effects effect NNS 36297 2440 6 opposite opposite RB 36297 2440 7 to to IN 36297 2440 8 those those DT 36297 2440 9 of of IN 36297 2440 10 the the DT 36297 2440 11 stereoscope stereoscope NN 36297 2440 12 is be VBZ 36297 2440 13 an an DT 36297 2440 14 interesting interesting JJ 36297 2440 15 device device NN 36297 2440 16 . . . 36297 2441 1 The the DT 36297 2441 2 foregoing foregoing NN 36297 2441 3 is be VBZ 36297 2441 4 the the DT 36297 2441 5 faintest faint JJS 36297 2441 6 glimpse glimpse NN 36297 2441 7 of of IN 36297 2441 8 the the DT 36297 2441 9 use use NN 36297 2441 10 of of IN 36297 2441 11 the the DT 36297 2441 12 mirror mirror NN 36297 2441 13 , , , 36297 2441 14 but but CC 36297 2441 15 it -PRON- PRP 36297 2441 16 does do VBZ 36297 2441 17 not not RB 36297 2441 18 appear appear VB 36297 2441 19 advisable advisable JJ 36297 2441 20 to to TO 36297 2441 21 dwell dwell VB 36297 2441 22 further further RB 36297 2441 23 upon upon IN 36297 2441 24 its -PRON- PRP$ 36297 2441 25 use use NN 36297 2441 26 , , , 36297 2441 27 for for IN 36297 2441 28 after after IN 36297 2441 29 all all PDT 36297 2441 30 the the DT 36297 2441 31 results result NNS 36297 2441 32 are be VBP 36297 2441 33 not not RB 36297 2441 34 visual visual JJ 36297 2441 35 illusions illusion NNS 36297 2441 36 in in IN 36297 2441 37 the the DT 36297 2441 38 sense sense NN 36297 2441 39 of of IN 36297 2441 40 the the DT 36297 2441 41 term term NN 36297 2441 42 as as IN 36297 2441 43 usually usually RB 36297 2441 44 employed employ VBN 36297 2441 45 throughout throughout IN 36297 2441 46 this this DT 36297 2441 47 book book NN 36297 2441 48 . . . 36297 2442 1 XV XV NNP 36297 2442 2 CAMOUFLAGE CAMOUFLAGE NNP 36297 2442 3 Illusions Illusions NNPS 36297 2442 4 played play VBD 36297 2442 5 many many JJ 36297 2442 6 roles role NNS 36297 2442 7 in in IN 36297 2442 8 the the DT 36297 2442 9 science science NN 36297 2442 10 and and CC 36297 2442 11 art art NN 36297 2442 12 of of IN 36297 2442 13 deception deception NN 36297 2442 14 during during IN 36297 2442 15 the the DT 36297 2442 16 World World NNP 36297 2442 17 War War NNP 36297 2442 18 , , , 36297 2442 19 but but CC 36297 2442 20 they -PRON- PRP 36297 2442 21 served serve VBD 36297 2442 22 most most RBS 36297 2442 23 prominently prominently RB 36297 2442 24 in in IN 36297 2442 25 the the DT 36297 2442 26 later later JJ 36297 2442 27 stages stage NNS 36297 2442 28 of of IN 36297 2442 29 the the DT 36297 2442 30 war war NN 36297 2442 31 upon upon IN 36297 2442 32 the the DT 36297 2442 33 sea sea NN 36297 2442 34 . . . 36297 2443 1 Inasmuch inasmuch IN 36297 2443 2 as as IN 36297 2443 3 the the DT 36297 2443 4 story story NN 36297 2443 5 of of IN 36297 2443 6 the the DT 36297 2443 7 science science NN 36297 2443 8 of of IN 36297 2443 9 camouflage camouflage NN 36297 2443 10 is be VBZ 36297 2443 11 not not RB 36297 2443 12 generally generally RB 36297 2443 13 available available JJ 36297 2443 14 , , , 36297 2443 15 it -PRON- PRP 36297 2443 16 appears appear VBZ 36297 2443 17 worth worth JJ 36297 2443 18 while while IN 36297 2443 19 to to TO 36297 2443 20 present present VB 36297 2443 21 it -PRON- PRP 36297 2443 22 briefly briefly RB 36297 2443 23 . . . 36297 2444 1 Besides besides IN 36297 2444 2 being be VBG 36297 2444 3 of of IN 36297 2444 4 interest interest NN 36297 2444 5 , , , 36297 2444 6 it -PRON- PRP 36297 2444 7 will will MD 36297 2444 8 reveal reveal VB 36297 2444 9 to to IN 36297 2444 10 the the DT 36297 2444 11 reader reader NN 36297 2444 12 the the DT 36297 2444 13 part part NN 36297 2444 14 that that IN 36297 2444 15 the the DT 36297 2444 16 science science NN 36297 2444 17 of of IN 36297 2444 18 light light NN 36297 2444 19 , , , 36297 2444 20 color color NN 36297 2444 21 , , , 36297 2444 22 lighting lighting NN 36297 2444 23 , , , 36297 2444 24 and and CC 36297 2444 25 vision vision NN 36297 2444 26 played play VBN 36297 2444 27 in in IN 36297 2444 28 deception deception NN 36297 2444 29 . . . 36297 2445 1 Furthermore furthermore RB 36297 2445 2 , , , 36297 2445 3 the the DT 36297 2445 4 reader reader NN 36297 2445 5 will will MD 36297 2445 6 sense sense VB 36297 2445 7 the the DT 36297 2445 8 numberless numberless JJ 36297 2445 9 illusions illusion NNS 36297 2445 10 which which WDT 36297 2445 11 are be VBP 36297 2445 12 woven weave VBN 36297 2445 13 into into IN 36297 2445 14 camouflage camouflage NN 36297 2445 15 as as IN 36297 2445 16 developed develop VBN 36297 2445 17 in in IN 36297 2445 18 nature nature NN 36297 2445 19 , , , 36297 2445 20 and and CC 36297 2445 21 in in IN 36297 2445 22 human human JJ 36297 2445 23 activities activity NNS 36297 2445 24 . . . 36297 2446 1 The the DT 36297 2446 2 word word NN 36297 2446 3 _ _ NNP 36297 2446 4 camouflage camouflage NN 36297 2446 5 _ _ NNP 36297 2446 6 by by IN 36297 2446 7 origin origin NN 36297 2446 8 does do VBZ 36297 2446 9 not not RB 36297 2446 10 include include VB 36297 2446 11 all all DT 36297 2446 12 kinds kind NNS 36297 2446 13 of of IN 36297 2446 14 deception deception NN 36297 2446 15 ; ; : 36297 2446 16 however however RB 36297 2446 17 , , , 36297 2446 18 by by IN 36297 2446 19 extension extension NN 36297 2446 20 it -PRON- PRP 36297 2446 21 may may MD 36297 2446 22 and and CC 36297 2446 23 will will MD 36297 2446 24 here here RB 36297 2446 25 signify signify VB 36297 2446 26 almost almost RB 36297 2446 27 the the DT 36297 2446 28 entire entire JJ 36297 2446 29 art art NN 36297 2446 30 and and CC 36297 2446 31 science science NN 36297 2446 32 of of IN 36297 2446 33 deception deception NN 36297 2446 34 as as IN 36297 2446 35 found find VBN 36297 2446 36 in in IN 36297 2446 37 nature nature NN 36297 2446 38 and and CC 36297 2446 39 as as IN 36297 2446 40 practiced practice VBN 36297 2446 41 in in IN 36297 2446 42 the the DT 36297 2446 43 World World NNP 36297 2446 44 War War NNP 36297 2446 45 . . . 36297 2447 1 _ _ NNP 36297 2447 2 Terrestrial Terrestrial NNP 36297 2447 3 Camouflage._--Camouflage Camouflage._--Camouflage NNP 36297 2447 4 is be VBZ 36297 2447 5 an an DT 36297 2447 6 art art NN 36297 2447 7 which which WDT 36297 2447 8 is be VBZ 36297 2447 9 the the DT 36297 2447 10 natural natural JJ 36297 2447 11 outgrowth outgrowth NN 36297 2447 12 of of IN 36297 2447 13 our -PRON- PRP$ 36297 2447 14 instinct instinct NN 36297 2447 15 for for IN 36297 2447 16 concealment concealment NN 36297 2447 17 and and CC 36297 2447 18 deception deception NN 36297 2447 19 when when WRB 36297 2447 20 pitting pit VBG 36297 2447 21 our -PRON- PRP$ 36297 2447 22 wits wit NNS 36297 2447 23 against against IN 36297 2447 24 those those DT 36297 2447 25 of of IN 36297 2447 26 a a DT 36297 2447 27 crafty crafty JJ 36297 2447 28 prey prey NN 36297 2447 29 or or CC 36297 2447 30 enemy enemy NN 36297 2447 31 . . . 36297 2448 1 It -PRON- PRP 36297 2448 2 is be VBZ 36297 2448 3 an an DT 36297 2448 4 art art NN 36297 2448 5 older old JJR 36297 2448 6 than than IN 36297 2448 7 the the DT 36297 2448 8 human human JJ 36297 2448 9 race race NN 36297 2448 10 , , , 36297 2448 11 for for IN 36297 2448 12 its -PRON- PRP$ 36297 2448 13 beginnings beginning NNS 36297 2448 14 may may MD 36297 2448 15 be be VB 36297 2448 16 traced trace VBN 36297 2448 17 back back RB 36297 2448 18 to to IN 36297 2448 19 the the DT 36297 2448 20 obscurity obscurity NN 36297 2448 21 of of IN 36297 2448 22 the the DT 36297 2448 23 early early JJ 36297 2448 24 ages age NNS 36297 2448 25 of of IN 36297 2448 26 the the DT 36297 2448 27 evolution evolution NN 36297 2448 28 of of IN 36297 2448 29 animal animal NN 36297 2448 30 life life NN 36297 2448 31 . . . 36297 2449 1 The the DT 36297 2449 2 name name NN 36297 2449 3 was be VBD 36297 2449 4 coined coin VBN 36297 2449 5 by by IN 36297 2449 6 the the DT 36297 2449 7 French French NNP 36297 2449 8 to to TO 36297 2449 9 apply apply VB 36297 2449 10 to to IN 36297 2449 11 a a DT 36297 2449 12 definite definite JJ 36297 2449 13 art art NN 36297 2449 14 which which WDT 36297 2449 15 developed develop VBD 36297 2449 16 during during IN 36297 2449 17 the the DT 36297 2449 18 Great Great NNP 36297 2449 19 War War NNP 36297 2449 20 to to IN 36297 2449 21 a a DT 36297 2449 22 high high JJ 36297 2449 23 state state NN 36297 2449 24 , , , 36297 2449 25 as as IN 36297 2449 26 many many JJ 36297 2449 27 other other JJ 36297 2449 28 arts art NNS 36297 2449 29 developed develop VBN 36297 2449 30 by by IN 36297 2449 31 drawing draw VBG 36297 2449 32 deeply deeply RB 36297 2449 33 upon upon IN 36297 2449 34 the the DT 36297 2449 35 resources resource NNS 36297 2449 36 of of IN 36297 2449 37 scientific scientific JJ 36297 2449 38 knowledge knowledge NN 36297 2449 39 . . . 36297 2450 1 With with IN 36297 2450 2 the the DT 36297 2450 3 introduction introduction NN 36297 2450 4 of of IN 36297 2450 5 this this DT 36297 2450 6 specific specific JJ 36297 2450 7 word word NN 36297 2450 8 to to TO 36297 2450 9 cover cover VB 36297 2450 10 a a DT 36297 2450 11 vast vast JJ 36297 2450 12 field field NN 36297 2450 13 of of IN 36297 2450 14 activity activity NN 36297 2450 15 in in IN 36297 2450 16 scientifically scientifically RB 36297 2450 17 concealing conceal VBG 36297 2450 18 and and CC 36297 2450 19 deceiving deceive VBG 36297 2450 20 , , , 36297 2450 21 many many JJ 36297 2450 22 are be VBP 36297 2450 23 led lead VBN 36297 2450 24 to to TO 36297 2450 25 believe believe VB 36297 2450 26 that that IN 36297 2450 27 this this DT 36297 2450 28 is be VBZ 36297 2450 29 a a DT 36297 2450 30 new new JJ 36297 2450 31 art art NN 36297 2450 32 , , , 36297 2450 33 but but CC 36297 2450 34 such such JJ 36297 2450 35 is be VBZ 36297 2450 36 not not RB 36297 2450 37 the the DT 36297 2450 38 case case NN 36297 2450 39 . . . 36297 2451 1 However however RB 36297 2451 2 , , , 36297 2451 3 like like IN 36297 2451 4 many many JJ 36297 2451 5 other other JJ 36297 2451 6 arts art NNS 36297 2451 7 , , , 36297 2451 8 such such JJ 36297 2451 9 as as IN 36297 2451 10 that that DT 36297 2451 11 of of IN 36297 2451 12 flying flying NN 36297 2451 13 , , , 36297 2451 14 the the DT 36297 2451 15 exigencies exigency NNS 36297 2451 16 of of IN 36297 2451 17 modern modern JJ 36297 2451 18 warfare warfare NN 36297 2451 19 have have VBP 36297 2451 20 provided provide VBN 36297 2451 21 an an DT 36297 2451 22 impetus impetus NN 36297 2451 23 which which WDT 36297 2451 24 has have VBZ 36297 2451 25 resulted result VBN 36297 2451 26 in in IN 36297 2451 27 a a DT 36297 2451 28 highly highly RB 36297 2451 29 developed develop VBN 36297 2451 30 art art NN 36297 2451 31 . . . 36297 2452 1 Scientists scientist NNS 36297 2452 2 have have VBP 36297 2452 3 recognized recognize VBN 36297 2452 4 for for IN 36297 2452 5 many many JJ 36297 2452 6 years year NNS 36297 2452 7 , , , 36297 2452 8 and and CC 36297 2452 9 perhaps perhaps RB 36297 2452 10 more more RBR 36297 2452 11 or or CC 36297 2452 12 less less RBR 36297 2452 13 vaguely vaguely RB 36297 2452 14 for for IN 36297 2452 15 centuries century NNS 36297 2452 16 , , , 36297 2452 17 that that IN 36297 2452 18 Nature Nature NNP 36297 2452 19 exhibits exhibit VBZ 36297 2452 20 wonderful wonderful JJ 36297 2452 21 examples example NNS 36297 2452 22 of of IN 36297 2452 23 concealment concealment NN 36297 2452 24 and and CC 36297 2452 25 deception deception NN 36297 2452 26 . . . 36297 2453 1 The the DT 36297 2453 2 survival survival NN 36297 2453 3 of of IN 36297 2453 4 the the DT 36297 2453 5 fittest fit JJS 36297 2453 6 , , , 36297 2453 7 as as IN 36297 2453 8 Darwin Darwin NNP 36297 2453 9 expressed express VBD 36297 2453 10 his -PRON- PRP$ 36297 2453 11 doctrine doctrine NN 36297 2453 12 , , , 36297 2453 13 included include VBD 36297 2453 14 those those DT 36297 2453 15 individuals individual NNS 36297 2453 16 of of IN 36297 2453 17 a a DT 36297 2453 18 species specie NNS 36297 2453 19 who who WP 36297 2453 20 were be VBD 36297 2453 21 best well RBS 36297 2453 22 fitted fit VBN 36297 2453 23 by by IN 36297 2453 24 their -PRON- PRP$ 36297 2453 25 markings marking NNS 36297 2453 26 and and CC 36297 2453 27 perhaps perhaps RB 36297 2453 28 by by IN 36297 2453 29 peculiar peculiar JJ 36297 2453 30 habits habit NNS 36297 2453 31 to to TO 36297 2453 32 survive survive VB 36297 2453 33 in in IN 36297 2453 34 the the DT 36297 2453 35 environment environment NN 36297 2453 36 in in IN 36297 2453 37 which which WDT 36297 2453 38 they -PRON- PRP 36297 2453 39 lived live VBD 36297 2453 40 . . . 36297 2454 1 Naturally naturally RB 36297 2454 2 , , , 36297 2454 3 markings marking NNS 36297 2454 4 , , , 36297 2454 5 habits habit NNS 36297 2454 6 , , , 36297 2454 7 and and CC 36297 2454 8 environment environment NN 36297 2454 9 became become VBD 36297 2454 10 more more RBR 36297 2454 11 and and CC 36297 2454 12 more more RBR 36297 2454 13 adapted adapted JJ 36297 2454 14 to to IN 36297 2454 15 each each DT 36297 2454 16 other other JJ 36297 2454 17 until until IN 36297 2454 18 the the DT 36297 2454 19 species specie NNS 36297 2454 20 became become VBD 36297 2454 21 in in IN 36297 2454 22 equilibrium equilibrium NN 36297 2454 23 with with IN 36297 2454 24 Nature nature NN 36297 2454 25 sufficiently sufficiently RB 36297 2454 26 to to TO 36297 2454 27 insure insure VB 36297 2454 28 its -PRON- PRP$ 36297 2454 29 perpetuity perpetuity NN 36297 2454 30 . . . 36297 2455 1 If if IN 36297 2455 2 we -PRON- PRP 36297 2455 3 look look VBP 36297 2455 4 about about IN 36297 2455 5 us -PRON- PRP 36297 2455 6 upon upon IN 36297 2455 7 animal animal NN 36297 2455 8 life life NN 36297 2455 9 we -PRON- PRP 36297 2455 10 see see VBP 36297 2455 11 on on IN 36297 2455 12 every every DT 36297 2455 13 hand hand NN 36297 2455 14 examples example NNS 36297 2455 15 of of IN 36297 2455 16 concealing conceal VBG 36297 2455 17 coloration coloration NN 36297 2455 18 and and CC 36297 2455 19 attitudes attitude NNS 36297 2455 20 designed design VBN 36297 2455 21 to to TO 36297 2455 22 deceive deceive VB 36297 2455 23 the the DT 36297 2455 24 prey prey NN 36297 2455 25 or or CC 36297 2455 26 enemy enemy NN 36297 2455 27 . . . 36297 2456 1 The the DT 36297 2456 2 rabbit rabbit NN 36297 2456 3 is be VBZ 36297 2456 4 mottled mottle VBN 36297 2456 5 because because IN 36297 2456 6 Nature Nature NNP 36297 2456 7 's 's POS 36297 2456 8 infinite infinite JJ 36297 2456 9 variety variety NN 36297 2456 10 of of IN 36297 2456 11 highlights highlight NNS 36297 2456 12 , , , 36297 2456 13 shadows shadow NNS 36297 2456 14 , , , 36297 2456 15 and and CC 36297 2456 16 hues hue NNS 36297 2456 17 demand demand VBP 36297 2456 18 variety variety NN 36297 2456 19 in in IN 36297 2456 20 the the DT 36297 2456 21 markings marking NNS 36297 2456 22 of of IN 36297 2456 23 an an DT 36297 2456 24 animal animal NN 36297 2456 25 if if IN 36297 2456 26 the the DT 36297 2456 27 latter latter NN 36297 2456 28 is be VBZ 36297 2456 29 to to TO 36297 2456 30 be be VB 36297 2456 31 securely securely RB 36297 2456 32 hidden hide VBN 36297 2456 33 . . . 36297 2457 1 Solid solid JJ 36297 2457 2 color color NN 36297 2457 3 does do VBZ 36297 2457 4 not not RB 36297 2457 5 exist exist VB 36297 2457 6 in in IN 36297 2457 7 Nature Nature NNP 36297 2457 8 's 's POS 36297 2457 9 landscapes landscape NNS 36297 2457 10 in in IN 36297 2457 11 large large JJ 36297 2457 12 areas area NNS 36297 2457 13 . . . 36297 2458 1 The the DT 36297 2458 2 rabbit rabbit NN 36297 2458 3 is be VBZ 36297 2458 4 lighter light JJR 36297 2458 5 underneath underneath JJ 36297 2458 6 to to TO 36297 2458 7 compensate compensate VB 36297 2458 8 for for IN 36297 2458 9 the the DT 36297 2458 10 lower low JJR 36297 2458 11 intensity intensity NN 36297 2458 12 of of IN 36297 2458 13 illumination illumination NN 36297 2458 14 received receive VBN 36297 2458 15 on on IN 36297 2458 16 these these DT 36297 2458 17 portions portion NNS 36297 2458 18 . . . 36297 2459 1 As as IN 36297 2459 2 winter winter NN 36297 2459 3 approaches approach NNS 36297 2459 4 , , , 36297 2459 5 animals animal NNS 36297 2459 6 in in IN 36297 2459 7 rigorous rigorous JJ 36297 2459 8 climates climate NNS 36297 2459 9 need need VBP 36297 2459 10 warmer warm JJR 36297 2459 11 coats coat NNS 36297 2459 12 , , , 36297 2459 13 and and CC 36297 2459 14 the the DT 36297 2459 15 hairs hair NNS 36297 2459 16 grow grow VBP 36297 2459 17 longer long RBR 36297 2459 18 . . . 36297 2460 1 In in IN 36297 2460 2 many many JJ 36297 2460 3 cases case NNS 36297 2460 4 the the DT 36297 2460 5 color color NN 36297 2460 6 of of IN 36297 2460 7 the the DT 36297 2460 8 hairs hair NNS 36297 2460 9 changes change NNS 36297 2460 10 to to TO 36297 2460 11 gray gray JJ 36297 2460 12 or or CC 36297 2460 13 white white JJ 36297 2460 14 , , , 36297 2460 15 providing provide VBG 36297 2460 16 a a DT 36297 2460 17 better well JJR 36297 2460 18 coating coating NN 36297 2460 19 for for IN 36297 2460 20 the the DT 36297 2460 21 winter winter NN 36297 2460 22 environment environment NN 36297 2460 23 . . . 36297 2461 1 Animals animal NNS 36297 2461 2 are be VBP 36297 2461 3 known know VBN 36297 2461 4 to to IN 36297 2461 5 mimic mimic VB 36297 2461 6 inanimate inanimate JJ 36297 2461 7 objects object NNS 36297 2461 8 for for IN 36297 2461 9 the the DT 36297 2461 10 sake sake NN 36297 2461 11 of of IN 36297 2461 12 safety safety NN 36297 2461 13 . . . 36297 2462 1 For for IN 36297 2462 2 example example NN 36297 2462 3 , , , 36297 2462 4 the the DT 36297 2462 5 bittern bittern NN 36297 2462 6 will will MD 36297 2462 7 stand stand VB 36297 2462 8 rigid rigid JJ 36297 2462 9 with with IN 36297 2462 10 its -PRON- PRP$ 36297 2462 11 bill bill NN 36297 2462 12 pointed point VBD 36297 2462 13 skyward skyward RB 36297 2462 14 for for IN 36297 2462 15 many many JJ 36297 2462 16 minutes minute NNS 36297 2462 17 if if IN 36297 2462 18 it -PRON- PRP 36297 2462 19 suspects suspect VBZ 36297 2462 20 an an DT 36297 2462 21 enemy enemy NN 36297 2462 22 . . . 36297 2463 1 Non non JJ 36297 2463 2 - - JJ 36297 2463 3 poisonous poisonous JJ 36297 2463 4 snakes snake NNS 36297 2463 5 resemble resemble VBP 36297 2463 6 poisonous poisonous JJ 36297 2463 7 ones one NNS 36297 2463 8 in in IN 36297 2463 9 general general JJ 36297 2463 10 characteristics characteristic NNS 36297 2463 11 and and CC 36297 2463 12 get get VB 36297 2463 13 along along RP 36297 2463 14 in in IN 36297 2463 15 the the DT 36297 2463 16 world world NN 36297 2463 17 on on IN 36297 2463 18 the the DT 36297 2463 19 reputation reputation NN 36297 2463 20 of of IN 36297 2463 21 their -PRON- PRP$ 36297 2463 22 harmful harmful JJ 36297 2463 23 relatives relative NNS 36297 2463 24 . . . 36297 2464 1 The the DT 36297 2464 2 drone drone NN 36297 2464 3 - - HYPH 36297 2464 4 bee bee NN 36297 2464 5 has have VBZ 36297 2464 6 no no DT 36297 2464 7 sting ste VBG 36297 2464 8 , , , 36297 2464 9 but but CC 36297 2464 10 to to IN 36297 2464 11 the the DT 36297 2464 12 casual casual JJ 36297 2464 13 observer observer NN 36297 2464 14 it -PRON- PRP 36297 2464 15 is be VBZ 36297 2464 16 a a DT 36297 2464 17 bee bee NN 36297 2464 18 and and CC 36297 2464 19 bees bee NNS 36297 2464 20 generally generally RB 36297 2464 21 sting ste VBG 36297 2464 22 . . . 36297 2465 1 Some some DT 36297 2465 2 animals animal NNS 36297 2465 3 have have VBP 36297 2465 4 very very RB 36297 2465 5 contrasting contrast VBG 36297 2465 6 patterns pattern NNS 36297 2465 7 which which WDT 36297 2465 8 are be VBP 36297 2465 9 conspicuous conspicuous JJ 36297 2465 10 in in IN 36297 2465 11 shape shape NN 36297 2465 12 , , , 36297 2465 13 yet yet CC 36297 2465 14 these these DT 36297 2465 15 very very JJ 36297 2465 16 features feature NNS 36297 2465 17 disguise disguise VBP 36297 2465 18 the the DT 36297 2465 19 fact fact NN 36297 2465 20 that that IN 36297 2465 21 they -PRON- PRP 36297 2465 22 are be VBP 36297 2465 23 animals animal NNS 36297 2465 24 . . . 36297 2466 1 Close close JJ 36297 2466 2 observation observation NN 36297 2466 3 of of IN 36297 2466 4 fishes fish NNS 36297 2466 5 in in IN 36297 2466 6 their -PRON- PRP$ 36297 2466 7 natural natural JJ 36297 2466 8 environment environment NN 36297 2466 9 provides provide VBZ 36297 2466 10 striking strike VBG 36297 2466 11 examples example NNS 36297 2466 12 of of IN 36297 2466 13 concealing conceal VBG 36297 2466 14 coloration coloration NN 36297 2466 15 . . . 36297 2467 1 Vast vast JJ 36297 2467 2 works work NNS 36297 2467 3 have have VBP 36297 2467 4 been be VBN 36297 2467 5 written write VBN 36297 2467 6 on on IN 36297 2467 7 this this DT 36297 2467 8 subject subject NN 36297 2467 9 by by IN 36297 2467 10 scientists scientist NNS 36297 2467 11 , , , 36297 2467 12 so so CC 36297 2467 13 it -PRON- PRP 36297 2467 14 will will MD 36297 2467 15 only only RB 36297 2467 16 be be VB 36297 2467 17 touched touch VBN 36297 2467 18 upon upon IN 36297 2467 19 here here RB 36297 2467 20 . . . 36297 2468 1 There there EX 36297 2468 2 are be VBP 36297 2468 3 many many JJ 36297 2468 4 examples example NNS 36297 2468 5 of of IN 36297 2468 6 " " `` 36297 2468 7 mobile mobile JJ 36297 2468 8 " " '' 36297 2468 9 camouflage camouflage NN 36297 2468 10 to to TO 36297 2468 11 be be VB 36297 2468 12 found find VBN 36297 2468 13 in in IN 36297 2468 14 Nature Nature NNP 36297 2468 15 . . . 36297 2469 1 Seasonal seasonal JJ 36297 2469 2 changes change NNS 36297 2469 3 have have VBP 36297 2469 4 been be VBN 36297 2469 5 cited cite VBN 36297 2469 6 in in IN 36297 2469 7 a a DT 36297 2469 8 foregoing foregoing JJ 36297 2469 9 paragraph paragraph NN 36297 2469 10 . . . 36297 2470 1 The the DT 36297 2470 2 chameleon chameleon NN 36297 2470 3 changes change VBZ 36297 2470 4 its -PRON- PRP$ 36297 2470 5 color color NN 36297 2470 6 from from IN 36297 2470 7 moment moment NN 36297 2470 8 to to IN 36297 2470 9 moment moment NN 36297 2470 10 . . . 36297 2471 1 The the DT 36297 2471 2 flounder flounder NN 36297 2471 3 changes change VBZ 36297 2471 4 its -PRON- PRP$ 36297 2471 5 color color NN 36297 2471 6 and and CC 36297 2471 7 _ _ NNP 36297 2471 8 pattern pattern NN 36297 2471 9 _ _ NNP 36297 2471 10 to to TO 36297 2471 11 suit suit VB 36297 2471 12 its -PRON- PRP$ 36297 2471 13 environment environment NN 36297 2471 14 . . . 36297 2472 1 It -PRON- PRP 36297 2472 2 will will MD 36297 2472 3 even even RB 36297 2472 4 strive strive VB 36297 2472 5 to to TO 36297 2472 6 imitate imitate VB 36297 2472 7 a a DT 36297 2472 8 black black JJ 36297 2472 9 and and CC 36297 2472 10 white white JJ 36297 2472 11 checkerboard checkerboard NN 36297 2472 12 . . . 36297 2473 1 In in IN 36297 2473 2 looking look VBG 36297 2473 3 at at IN 36297 2473 4 a a DT 36297 2473 5 bird bird NN 36297 2473 6 , , , 36297 2473 7 animal animal NN 36297 2473 8 , , , 36297 2473 9 insect insect NN 36297 2473 10 , , , 36297 2473 11 or or CC 36297 2473 12 other other JJ 36297 2473 13 living live VBG 36297 2473 14 thing thing NN 36297 2473 15 it -PRON- PRP 36297 2473 16 is be VBZ 36297 2473 17 necessary necessary JJ 36297 2473 18 to to TO 36297 2473 19 place place VB 36297 2473 20 it -PRON- PRP 36297 2473 21 in in IN 36297 2473 22 its -PRON- PRP$ 36297 2473 23 natural natural JJ 36297 2473 24 environment environment NN 36297 2473 25 at at IN 36297 2473 26 least least JJS 36297 2473 27 in in IN 36297 2473 28 the the DT 36297 2473 29 imagination imagination NN 36297 2473 30 , , , 36297 2473 31 before before IN 36297 2473 32 analyzing analyze VBG 36297 2473 33 its -PRON- PRP$ 36297 2473 34 coloration coloration NN 36297 2473 35 . . . 36297 2474 1 For for IN 36297 2474 2 example example NN 36297 2474 3 , , , 36297 2474 4 a a DT 36297 2474 5 male male JJ 36297 2474 6 mallard mallard NN 36297 2474 7 duck duck NN 36297 2474 8 hanging hanging NN 36297 2474 9 in in IN 36297 2474 10 the the DT 36297 2474 11 market market NN 36297 2474 12 is be VBZ 36297 2474 13 a a DT 36297 2474 14 very very RB 36297 2474 15 gaudy gaudy JJ 36297 2474 16 object object NN 36297 2474 17 , , , 36297 2474 18 but but CC 36297 2474 19 place place VB 36297 2474 20 it -PRON- PRP 36297 2474 21 in in IN 36297 2474 22 the the DT 36297 2474 23 pond pond NN 36297 2474 24 among among IN 36297 2474 25 the the DT 36297 2474 26 weeds weed NNS 36297 2474 27 , , , 36297 2474 28 the the DT 36297 2474 29 green green JJ 36297 2474 30 leaves leave NNS 36297 2474 31 , , , 36297 2474 32 the the DT 36297 2474 33 highlights highlight NNS 36297 2474 34 , , , 36297 2474 35 and and CC 36297 2474 36 the the DT 36297 2474 37 shadows shadow NNS 36297 2474 38 , , , 36297 2474 39 and and CC 36297 2474 40 it -PRON- PRP 36297 2474 41 is be VBZ 36297 2474 42 surprisingly surprisingly RB 36297 2474 43 inconspicuous inconspicuous JJ 36297 2474 44 . . . 36297 2475 1 The the DT 36297 2475 2 zebra zebra NN 36297 2475 3 in in IN 36297 2475 4 the the DT 36297 2475 5 zoo zoo NN 36297 2475 6 appears appear VBZ 36297 2475 7 to to TO 36297 2475 8 be be VB 36297 2475 9 marked mark VBN 36297 2475 10 for for IN 36297 2475 11 the the DT 36297 2475 12 purpose purpose NN 36297 2475 13 of of IN 36297 2475 14 heralding herald VBG 36297 2475 15 its -PRON- PRP$ 36297 2475 16 presence presence NN 36297 2475 17 anywhere anywhere RB 36297 2475 18 in in IN 36297 2475 19 the the DT 36297 2475 20 range range NN 36297 2475 21 of of IN 36297 2475 22 vision vision NN 36297 2475 23 , , , 36297 2475 24 but but CC 36297 2475 25 in in IN 36297 2475 26 its -PRON- PRP$ 36297 2475 27 reedy reedy NN 36297 2475 28 , , , 36297 2475 29 bushy bushy JJ 36297 2475 30 , , , 36297 2475 31 grassy grassy JJ 36297 2475 32 environment environment NN 36297 2475 33 it -PRON- PRP 36297 2475 34 is be VBZ 36297 2475 35 sufficiently sufficiently RB 36297 2475 36 inconspicuous inconspicuous JJ 36297 2475 37 for for IN 36297 2475 38 the the DT 36297 2475 39 species specie NNS 36297 2475 40 to to TO 36297 2475 41 survive survive VB 36297 2475 42 in in IN 36297 2475 43 Nature Nature NNP 36297 2475 44 's 's POS 36297 2475 45 continuous continuous JJ 36297 2475 46 warfare warfare NN 36297 2475 47 . . . 36297 2476 1 Thus thus RB 36297 2476 2 studies study NNS 36297 2476 3 of of IN 36297 2476 4 Nature nature NN 36297 2476 5 reveal reveal VBP 36297 2476 6 the the DT 36297 2476 7 importance importance NN 36297 2476 8 of of IN 36297 2476 9 general general NNP 36297 2476 10 hue hue NNP 36297 2476 11 , , , 36297 2476 12 the the DT 36297 2476 13 necessity necessity NN 36297 2476 14 for for IN 36297 2476 15 broken break VBN 36297 2476 16 color color NN 36297 2476 17 or or CC 36297 2476 18 pattern pattern NN 36297 2476 19 , , , 36297 2476 20 the the DT 36297 2476 21 fact fact NN 36297 2476 22 that that IN 36297 2476 23 black black JJ 36297 2476 24 spots spot NNS 36297 2476 25 simulate simulate VBP 36297 2476 26 shadows shadow NNS 36297 2476 27 or or CC 36297 2476 28 voids void NNS 36297 2476 29 , , , 36297 2476 30 the the DT 36297 2476 31 compensation compensation NN 36297 2476 32 for for IN 36297 2476 33 lower low JJR 36297 2476 34 illumination illumination NN 36297 2476 35 by by IN 36297 2476 36 counter counter NN 36297 2476 37 - - NN 36297 2476 38 shading shade VBG 36297 2476 39 , , , 36297 2476 40 and and CC 36297 2476 41 many many JJ 36297 2476 42 other other JJ 36297 2476 43 facts fact NNS 36297 2476 44 . . . 36297 2477 1 The the DT 36297 2477 2 artist artist NN 36297 2477 3 has have VBZ 36297 2477 4 aided aid VBN 36297 2477 5 in in IN 36297 2477 6 the the DT 36297 2477 7 development development NN 36297 2477 8 of of IN 36297 2477 9 camouflage camouflage NN 36297 2477 10 , , , 36297 2477 11 but but CC 36297 2477 12 the the DT 36297 2477 13 definite definite JJ 36297 2477 14 and and CC 36297 2477 15 working working JJ 36297 2477 16 basis basis NN 36297 2477 17 of of IN 36297 2477 18 all all DT 36297 2477 19 branches branch NNS 36297 2477 20 of of IN 36297 2477 21 camouflage camouflage NN 36297 2477 22 are be VBP 36297 2477 23 the the DT 36297 2477 24 laws law NNS 36297 2477 25 and and CC 36297 2477 26 facts fact NNS 36297 2477 27 of of IN 36297 2477 28 light light NN 36297 2477 29 , , , 36297 2477 30 color color NN 36297 2477 31 , , , 36297 2477 32 and and CC 36297 2477 33 vision vision NN 36297 2477 34 as as IN 36297 2477 35 the the DT 36297 2477 36 scientist scientist NN 36297 2477 37 knows know VBZ 36297 2477 38 them -PRON- PRP 36297 2477 39 . . . 36297 2478 1 Just just RB 36297 2478 2 as as IN 36297 2478 3 lower low JJR 36297 2478 4 animal animal NN 36297 2478 5 life life NN 36297 2478 6 has have VBZ 36297 2478 7 unconsciously unconsciously RB 36297 2478 8 survived survive VBN 36297 2478 9 or or CC 36297 2478 10 evolved evolve VBN 36297 2478 11 by by IN 36297 2478 12 being be VBG 36297 2478 13 fitted fit VBN 36297 2478 14 to to TO 36297 2478 15 do do VB 36297 2478 16 so so RB 36297 2478 17 , , , 36297 2478 18 mankind mankind NN 36297 2478 19 has have VBZ 36297 2478 20 consciously consciously RB 36297 2478 21 , , , 36297 2478 22 or or CC 36297 2478 23 at at IN 36297 2478 24 least least JJS 36297 2478 25 instinctively instinctively RB 36297 2478 26 , , , 36297 2478 27 applied applied JJ 36297 2478 28 camouflage camouflage NN 36297 2478 29 of of IN 36297 2478 30 various various JJ 36297 2478 31 kinds kind NNS 36297 2478 32 to to TO 36297 2478 33 fool fool VB 36297 2478 34 his -PRON- PRP$ 36297 2478 35 prey prey NN 36297 2478 36 or or CC 36297 2478 37 his -PRON- PRP$ 36297 2478 38 enemy enemy NN 36297 2478 39 . . . 36297 2479 1 Many many JJ 36297 2479 2 of of IN 36297 2479 3 us -PRON- PRP 36297 2479 4 in in IN 36297 2479 5 hunting hunt VBG 36297 2479 6 ducks duck NNS 36297 2479 7 have have VBP 36297 2479 8 concealed conceal VBN 36297 2479 9 the the DT 36297 2479 10 bow bow NN 36297 2479 11 of of IN 36297 2479 12 our -PRON- PRP$ 36297 2479 13 sneak sneak NN 36297 2479 14 - - HYPH 36297 2479 15 boat boat NN 36297 2479 16 with with IN 36297 2479 17 mud mud NN 36297 2479 18 and and CC 36297 2479 19 weeds weed NNS 36297 2479 20 , , , 36297 2479 21 or or CC 36297 2479 22 in in IN 36297 2479 23 the the DT 36297 2479 24 season season NN 36297 2479 25 of of IN 36297 2479 26 floating float VBG 36297 2479 27 ice ice NN 36297 2479 28 , , , 36297 2479 29 with with IN 36297 2479 30 a a DT 36297 2479 31 white white JJ 36297 2479 32 cloth cloth NN 36297 2479 33 . . . 36297 2480 1 In in IN 36297 2480 2 our -PRON- PRP$ 36297 2480 3 quest quest NN 36297 2480 4 of of IN 36297 2480 5 water water NN 36297 2480 6 fowl fowl NN 36297 2480 7 we -PRON- PRP 36297 2480 8 use use VBP 36297 2480 9 decoys decoy NNS 36297 2480 10 and and CC 36297 2480 11 grass grass NN 36297 2480 12 suits suit NNS 36297 2480 13 . . . 36297 2481 1 The the DT 36297 2481 2 Esquimau Esquimau NNP 36297 2481 3 stalks stalk VBZ 36297 2481 4 his -PRON- PRP$ 36297 2481 5 game game NN 36297 2481 6 behind behind IN 36297 2481 7 a a DT 36297 2481 8 piece piece NN 36297 2481 9 of of IN 36297 2481 10 ice ice NN 36297 2481 11 . . . 36297 2482 1 In in IN 36297 2482 2 fact fact NN 36297 2482 3 , , , 36297 2482 4 on on IN 36297 2482 5 every every DT 36297 2482 6 hand hand NN 36297 2482 7 we -PRON- PRP 36297 2482 8 find find VBP 36297 2482 9 evidences evidence NNS 36297 2482 10 of of IN 36297 2482 11 this this DT 36297 2482 12 natural natural JJ 36297 2482 13 instinct instinct NN 36297 2482 14 . . . 36297 2483 1 The the DT 36297 2483 2 Indian Indian NNP 36297 2483 3 painted paint VBD 36297 2483 4 his -PRON- PRP$ 36297 2483 5 face face NN 36297 2483 6 and and CC 36297 2483 7 body body NN 36297 2483 8 in in IN 36297 2483 9 a a DT 36297 2483 10 variety variety NN 36297 2483 11 of of IN 36297 2483 12 colors color NNS 36297 2483 13 and and CC 36297 2483 14 patterns pattern NNS 36297 2483 15 . . . 36297 2484 1 Did do VBD 36297 2484 2 he -PRON- PRP 36297 2484 3 do do VB 36297 2484 4 this this DT 36297 2484 5 merely merely RB 36297 2484 6 to to TO 36297 2484 7 be be VB 36297 2484 8 hideous hideous JJ 36297 2484 9 ? ? . 36297 2485 1 It -PRON- PRP 36297 2485 2 seems seem VBZ 36297 2485 3 very very RB 36297 2485 4 possible possible JJ 36297 2485 5 that that IN 36297 2485 6 the the DT 36297 2485 7 same same JJ 36297 2485 8 instinct instinct NN 36297 2485 9 which which WDT 36297 2485 10 made make VBD 36297 2485 11 him -PRON- PRP 36297 2485 12 the the DT 36297 2485 13 supreme supreme NNP 36297 2485 14 master master NNP 36297 2485 15 of of IN 36297 2485 16 wood wood NN 36297 2485 17 - - HYPH 36297 2485 18 craft craft NN 36297 2485 19 caused cause VBD 36297 2485 20 him -PRON- PRP 36297 2485 21 to to TO 36297 2485 22 reap reap VB 36297 2485 23 some some DT 36297 2485 24 of of IN 36297 2485 25 the the DT 36297 2485 26 advantages advantage NNS 36297 2485 27 of of IN 36297 2485 28 concealment concealment NN 36297 2485 29 due due IN 36297 2485 30 to to IN 36297 2485 31 the the DT 36297 2485 32 painting painting NN 36297 2485 33 of of IN 36297 2485 34 his -PRON- PRP$ 36297 2485 35 face face NN 36297 2485 36 and and CC 36297 2485 37 body body NN 36297 2485 38 . . . 36297 2486 1 In in IN 36297 2486 2 past past JJ 36297 2486 3 wars war NNS 36297 2486 4 there there EX 36297 2486 5 is be VBZ 36297 2486 6 plenty plenty NN 36297 2486 7 of of IN 36297 2486 8 evidence evidence NN 36297 2486 9 that that IN 36297 2486 10 concealment concealment NN 36297 2486 11 and and CC 36297 2486 12 deception deception NN 36297 2486 13 were be VBD 36297 2486 14 practiced practice VBN 36297 2486 15 to to IN 36297 2486 16 the the DT 36297 2486 17 full full JJ 36297 2486 18 extent extent NN 36297 2486 19 justifiable justifiable NN 36297 2486 20 by by IN 36297 2486 21 the the DT 36297 2486 22 advantages advantage NNS 36297 2486 23 or or CC 36297 2486 24 necessity necessity NN 36297 2486 25 . . . 36297 2487 1 In in IN 36297 2487 2 the the DT 36297 2487 3 World World NNP 36297 2487 4 War War NNP 36297 2487 5 the the DT 36297 2487 6 advent advent NN 36297 2487 7 of of IN 36297 2487 8 the the DT 36297 2487 9 airplane airplane NN 36297 2487 10 placed place VBD 36297 2487 11 the the DT 36297 2487 12 third third JJ 36297 2487 13 dimension dimension NN 36297 2487 14 in in IN 36297 2487 15 reconnaissance reconnaissance NN 36297 2487 16 and and CC 36297 2487 17 called call VBD 36297 2487 18 for for IN 36297 2487 19 the the DT 36297 2487 20 application application NN 36297 2487 21 of of IN 36297 2487 22 science science NN 36297 2487 23 in in IN 36297 2487 24 the the DT 36297 2487 25 greatly greatly RB 36297 2487 26 extended extended JJ 36297 2487 27 necessity necessity NN 36297 2487 28 for for IN 36297 2487 29 concealment concealment NN 36297 2487 30 and and CC 36297 2487 31 deception deception NN 36297 2487 32 . . . 36297 2488 1 With with IN 36297 2488 2 the the DT 36297 2488 3 advent advent NN 36297 2488 4 of of IN 36297 2488 5 the the DT 36297 2488 6 airplane airplane NN 36297 2488 7 , , , 36297 2488 8 aerial aerial JJ 36297 2488 9 photography photography NN 36297 2488 10 became become VBD 36297 2488 11 a a DT 36297 2488 12 more more RBR 36297 2488 13 important important JJ 36297 2488 14 factor factor NN 36297 2488 15 than than IN 36297 2488 16 visual visual JJ 36297 2488 17 observation observation NN 36297 2488 18 in in IN 36297 2488 19 much much JJ 36297 2488 20 of of IN 36297 2488 21 the the DT 36297 2488 22 reconnaissance reconnaissance NN 36297 2488 23 . . . 36297 2489 1 This this DT 36297 2489 2 necessitated necessitate VBD 36297 2489 3 that that DT 36297 2489 4 camouflage camouflage NN 36297 2489 5 in in IN 36297 2489 6 order order NN 36297 2489 7 to to TO 36297 2489 8 be be VB 36297 2489 9 successful successful JJ 36297 2489 10 had have VBD 36297 2489 11 to to TO 36297 2489 12 meet meet VB 36297 2489 13 the the DT 36297 2489 14 requirements requirement NNS 36297 2489 15 of of IN 36297 2489 16 the the DT 36297 2489 17 photographic photographic JJ 36297 2489 18 eye eye NN 36297 2489 19 , , , 36297 2489 20 as as RB 36297 2489 21 well well RB 36297 2489 22 as as IN 36297 2489 23 that that DT 36297 2489 24 of of IN 36297 2489 25 the the DT 36297 2489 26 human human JJ 36297 2489 27 eye eye NN 36297 2489 28 . . . 36297 2490 1 In in IN 36297 2490 2 other other JJ 36297 2490 3 words word NNS 36297 2490 4 , , , 36297 2490 5 the the DT 36297 2490 6 special special JJ 36297 2490 7 characteristics characteristic NNS 36297 2490 8 of of IN 36297 2490 9 the the DT 36297 2490 10 colors color NNS 36297 2490 11 used use VBN 36297 2490 12 had have VBD 36297 2490 13 to to TO 36297 2490 14 be be VB 36297 2490 15 similar similar JJ 36297 2490 16 to to IN 36297 2490 17 those those DT 36297 2490 18 of of IN 36297 2490 19 Nature Nature NNP 36297 2490 20 's 's POS 36297 2490 21 colors color NNS 36297 2490 22 . . . 36297 2491 1 For for IN 36297 2491 2 example example NN 36297 2491 3 , , , 36297 2491 4 chlorophyl chlorophyl NNP 36297 2491 5 , , , 36297 2491 6 the the DT 36297 2491 7 green green JJ 36297 2491 8 coloring coloring NN 36297 2491 9 matter matter NN 36297 2491 10 of of IN 36297 2491 11 vegetation vegetation NN 36297 2491 12 , , , 36297 2491 13 is be VBZ 36297 2491 14 a a DT 36297 2491 15 peculiar peculiar JJ 36297 2491 16 green green NN 36297 2491 17 as as IN 36297 2491 18 compared compare VBN 36297 2491 19 with with IN 36297 2491 20 green green JJ 36297 2491 21 pigments pigment NNS 36297 2491 22 . . . 36297 2492 1 When when WRB 36297 2492 2 examined examine VBN 36297 2492 3 with with IN 36297 2492 4 a a DT 36297 2492 5 spectroscope spectroscope NN 36297 2492 6 it -PRON- PRP 36297 2492 7 is be VBZ 36297 2492 8 seen see VBN 36297 2492 9 to to TO 36297 2492 10 reflect reflect VB 36297 2492 11 a a DT 36297 2492 12 band band NN 36297 2492 13 of of IN 36297 2492 14 deep deep JJ 36297 2492 15 red red JJ 36297 2492 16 light light NN 36297 2492 17 not not RB 36297 2492 18 reflected reflect VBN 36297 2492 19 by by IN 36297 2492 20 ordinary ordinary JJ 36297 2492 21 pigments pigment NNS 36297 2492 22 . . . 36297 2493 1 In in IN 36297 2493 2 considering consider VBG 36297 2493 3 this this DT 36297 2493 4 aspect aspect NN 36297 2493 5 it -PRON- PRP 36297 2493 6 is be VBZ 36297 2493 7 well well JJ 36297 2493 8 to to TO 36297 2493 9 bear bear VB 36297 2493 10 in in IN 36297 2493 11 mind mind NN 36297 2493 12 that that IN 36297 2493 13 the the DT 36297 2493 14 eye eye NN 36297 2493 15 is be VBZ 36297 2493 16 a a DT 36297 2493 17 synthetic synthetic JJ 36297 2493 18 apparatus apparatus NN 36297 2493 19 ; ; : 36297 2493 20 that that RB 36297 2493 21 is is RB 36297 2493 22 does do VBZ 36297 2493 23 not not RB 36297 2493 24 analyze analyze VB 36297 2493 25 color color NN 36297 2493 26 in in IN 36297 2493 27 a a DT 36297 2493 28 spectral spectral JJ 36297 2493 29 sense sense NN 36297 2493 30 . . . 36297 2494 1 An an DT 36297 2494 2 artist artist NN 36297 2494 3 who who WP 36297 2494 4 views view VBZ 36297 2494 5 color color NN 36297 2494 6 subjectively subjectively RB 36297 2494 7 and and CC 36297 2494 8 is be VBZ 36297 2494 9 rarely rarely RB 36297 2494 10 familiar familiar JJ 36297 2494 11 with with IN 36297 2494 12 the the DT 36297 2494 13 spectral spectral JJ 36297 2494 14 basis basis NN 36297 2494 15 may may MD 36297 2494 16 match match VB 36297 2494 17 a a DT 36297 2494 18 green green JJ 36297 2494 19 leaf leaf NN 36297 2494 20 perfectly perfectly RB 36297 2494 21 with with IN 36297 2494 22 a a DT 36297 2494 23 mixture mixture NN 36297 2494 24 of of IN 36297 2494 25 pigments pigment NNS 36297 2494 26 . . . 36297 2495 1 A a DT 36297 2495 2 photographic photographic JJ 36297 2495 3 plate plate NN 36297 2495 4 , , , 36297 2495 5 a a DT 36297 2495 6 visual visual JJ 36297 2495 7 filter filter NN 36297 2495 8 , , , 36297 2495 9 or or CC 36297 2495 10 a a DT 36297 2495 11 spectroscope spectroscope NN 36297 2495 12 will will MD 36297 2495 13 reveal reveal VB 36297 2495 14 a a DT 36297 2495 15 difference difference NN 36297 2495 16 which which WDT 36297 2495 17 the the DT 36297 2495 18 unaided unaided JJ 36297 2495 19 eye eye NN 36297 2495 20 does do VBZ 36297 2495 21 not not RB 36297 2495 22 . . . 36297 2496 1 Some some DT 36297 2496 2 time time NN 36297 2496 3 before before IN 36297 2496 4 the the DT 36297 2496 5 Great Great NNP 36297 2496 6 War War NNP 36297 2496 7 began begin VBD 36297 2496 8 , , , 36297 2496 9 it -PRON- PRP 36297 2496 10 occurred occur VBD 36297 2496 11 to to IN 36297 2496 12 the the DT 36297 2496 13 writer writer NN 36297 2496 14 that that WDT 36297 2496 15 colored color VBN 36297 2496 16 filters filter NNS 36297 2496 17 could could MD 36297 2496 18 be be VB 36297 2496 19 utilized utilize VBN 36297 2496 20 in in IN 36297 2496 21 aiding aid VBG 36297 2496 22 vision vision NN 36297 2496 23 by by IN 36297 2496 24 increasing increase VBG 36297 2496 25 the the DT 36297 2496 26 contrast contrast NN 36297 2496 27 of of IN 36297 2496 28 the the DT 36297 2496 29 object object NN 36297 2496 30 to to TO 36297 2496 31 be be VB 36297 2496 32 viewed view VBN 36297 2496 33 against against IN 36297 2496 34 its -PRON- PRP$ 36297 2496 35 surroundings surrounding NNS 36297 2496 36 . . . 36297 2497 1 [ [ -LRB- 36297 2497 2 9 9 CD 36297 2497 3 ] ] -RRB- 36297 2497 4 Studies study NNS 36297 2497 5 were be VBD 36297 2497 6 made make VBN 36297 2497 7 of of IN 36297 2497 8 various various JJ 36297 2497 9 filters filter NNS 36297 2497 10 , , , 36297 2497 11 made make VBN 36297 2497 12 with with IN 36297 2497 13 the the DT 36297 2497 14 object object NN 36297 2497 15 of of IN 36297 2497 16 the the DT 36297 2497 17 experiment experiment NN 36297 2497 18 in in IN 36297 2497 19 mind mind NN 36297 2497 20 , , , 36297 2497 21 in in IN 36297 2497 22 viewing view VBG 36297 2497 23 the the DT 36297 2497 24 uniforms uniform NNS 36297 2497 25 of of IN 36297 2497 26 various various JJ 36297 2497 27 armies army NNS 36297 2497 28 . . . 36297 2498 1 Further further JJ 36297 2498 2 developments development NNS 36297 2498 3 were be VBD 36297 2498 4 made make VBN 36297 2498 5 by by IN 36297 2498 6 applying apply VBG 36297 2498 7 the the DT 36297 2498 8 same same JJ 36297 2498 9 principles principle NNS 36297 2498 10 to to IN 36297 2498 11 colored color VBN 36297 2498 12 lights light NNS 36297 2498 13 and and CC 36297 2498 14 painted paint VBN 36297 2498 15 pictures picture NNS 36297 2498 16 . . . 36297 2499 1 Many many JJ 36297 2499 2 of of IN 36297 2499 3 these these DT 36297 2499 4 have have VBP 36297 2499 5 been be VBN 36297 2499 6 described describe VBN 36297 2499 7 elsewhere elsewhere RB 36297 2499 8 . . . 36297 2500 1 With with IN 36297 2500 2 the the DT 36297 2500 3 development development NN 36297 2500 4 of of IN 36297 2500 5 the the DT 36297 2500 6 science science NN 36297 2500 7 of of IN 36297 2500 8 camouflage camouflage NN 36297 2500 9 , , , 36297 2500 10 filters filter NNS 36297 2500 11 came come VBD 36297 2500 12 into into IN 36297 2500 13 use use NN 36297 2500 14 for for IN 36297 2500 15 the the DT 36297 2500 16 detection detection NN 36297 2500 17 of of IN 36297 2500 18 camouflage camouflage NN 36297 2500 19 . . . 36297 2501 1 As as IN 36297 2501 2 a a DT 36297 2501 3 result result NN 36297 2501 4 of of IN 36297 2501 5 the the DT 36297 2501 6 demand demand NN 36297 2501 7 for for IN 36297 2501 8 avoiding avoid VBG 36297 2501 9 detection detection NN 36297 2501 10 by by IN 36297 2501 11 photographic photographic JJ 36297 2501 12 plates plate NNS 36297 2501 13 and and CC 36297 2501 14 by by IN 36297 2501 15 various various JJ 36297 2501 16 colored color VBN 36297 2501 17 filters filter NNS 36297 2501 18 , , , 36297 2501 19 some some DT 36297 2501 20 paints paint NNS 36297 2501 21 provided provide VBN 36297 2501 22 for for IN 36297 2501 23 the the DT 36297 2501 24 camoufleur camoufleur NN 36297 2501 25 were be VBD 36297 2501 26 developed develop VBN 36297 2501 27 according accord VBG 36297 2501 28 to to IN 36297 2501 29 the the DT 36297 2501 30 spectral spectral JJ 36297 2501 31 requirements requirement NNS 36297 2501 32 . . . 36297 2502 1 Many many JJ 36297 2502 2 other other JJ 36297 2502 3 applications application NNS 36297 2502 4 of of IN 36297 2502 5 science science NN 36297 2502 6 were be VBD 36297 2502 7 developed develop VBN 36297 2502 8 so so IN 36297 2502 9 that that IN 36297 2502 10 camouflage camouflage NN 36297 2502 11 can can MD 36297 2502 12 now now RB 36297 2502 13 be be VB 36297 2502 14 called call VBN 36297 2502 15 an an DT 36297 2502 16 art art NN 36297 2502 17 based base VBN 36297 2502 18 upon upon IN 36297 2502 19 sound sound JJ 36297 2502 20 scientific scientific JJ 36297 2502 21 principles principle NNS 36297 2502 22 . . . 36297 2503 1 Natural natural JJ 36297 2503 2 lighting lighting NN 36297 2503 3 is be VBZ 36297 2503 4 so so RB 36297 2503 5 variable variable JJ 36297 2503 6 that that IN 36297 2503 7 it -PRON- PRP 36297 2503 8 is be VBZ 36297 2503 9 often often RB 36297 2503 10 impossible impossible JJ 36297 2503 11 to to TO 36297 2503 12 provide provide VB 36297 2503 13 camouflage camouflage NN 36297 2503 14 which which WDT 36297 2503 15 will will MD 36297 2503 16 remain remain VB 36297 2503 17 satisfactory satisfactory JJ 36297 2503 18 from from IN 36297 2503 19 day day NN 36297 2503 20 to to IN 36297 2503 21 day day NN 36297 2503 22 ; ; : 36297 2503 23 therefore therefore RB 36297 2503 24 , , , 36297 2503 25 a a DT 36297 2503 26 broad broad JJ 36297 2503 27 knowledge knowledge NN 36297 2503 28 of of IN 36297 2503 29 Nature nature NN 36297 2503 30 's 's POS 36297 2503 31 lighting lighting NN 36297 2503 32 is be VBZ 36297 2503 33 necessary necessary JJ 36297 2503 34 in in IN 36297 2503 35 order order NN 36297 2503 36 to to TO 36297 2503 37 provide provide VB 36297 2503 38 the the DT 36297 2503 39 best good JJS 36297 2503 40 compromise compromise NN 36297 2503 41 . . . 36297 2504 1 There there EX 36297 2504 2 are be VBP 36297 2504 3 two two CD 36297 2504 4 sources source NNS 36297 2504 5 of of IN 36297 2504 6 light light NN 36297 2504 7 in in IN 36297 2504 8 the the DT 36297 2504 9 daytime daytime NN 36297 2504 10 , , , 36297 2504 11 namely namely RB 36297 2504 12 , , , 36297 2504 13 the the DT 36297 2504 14 sun sun NN 36297 2504 15 and and CC 36297 2504 16 the the DT 36297 2504 17 sky sky NN 36297 2504 18 . . . 36297 2505 1 The the DT 36297 2505 2 relative relative JJ 36297 2505 3 amounts amount NNS 36297 2505 4 of of IN 36297 2505 5 light light NN 36297 2505 6 contributed contribute VBN 36297 2505 7 by by IN 36297 2505 8 these these DT 36297 2505 9 two two CD 36297 2505 10 sources source NNS 36297 2505 11 is be VBZ 36297 2505 12 continually continually RB 36297 2505 13 changing change VBG 36297 2505 14 . . . 36297 2506 1 The the DT 36297 2506 2 sky sky NN 36297 2506 3 on on IN 36297 2506 4 cloudless cloudless JJ 36297 2506 5 days day NNS 36297 2506 6 contributes contribute NNS 36297 2506 7 from from IN 36297 2506 8 one one CD 36297 2506 9 - - HYPH 36297 2506 10 tenth tenth NN 36297 2506 11 to to IN 36297 2506 12 one one CD 36297 2506 13 - - HYPH 36297 2506 14 third third NN 36297 2506 15 of of IN 36297 2506 16 the the DT 36297 2506 17 total total JJ 36297 2506 18 light light NN 36297 2506 19 received receive VBN 36297 2506 20 by by IN 36297 2506 21 a a DT 36297 2506 22 horizontal horizontal JJ 36297 2506 23 surface surface NN 36297 2506 24 at at IN 36297 2506 25 noon noon NN 36297 2506 26 . . . 36297 2507 1 Light light NN 36297 2507 2 from from IN 36297 2507 3 the the DT 36297 2507 4 sky sky NN 36297 2507 5 and and CC 36297 2507 6 light light NN 36297 2507 7 reflected reflect VBN 36297 2507 8 from from IN 36297 2507 9 the the DT 36297 2507 10 surroundings surrounding NNS 36297 2507 11 illuminate illuminate VBP 36297 2507 12 the the DT 36297 2507 13 shadows shadow NNS 36297 2507 14 . . . 36297 2508 1 These these DT 36297 2508 2 shadows shadow NNS 36297 2508 3 are be VBP 36297 2508 4 different different JJ 36297 2508 5 in in IN 36297 2508 6 color color NN 36297 2508 7 than than IN 36297 2508 8 highlights highlight NNS 36297 2508 9 , , , 36297 2508 10 although although IN 36297 2508 11 these these DT 36297 2508 12 finer fine JJR 36297 2508 13 distinctions distinction NNS 36297 2508 14 may may MD 36297 2508 15 be be VB 36297 2508 16 ignored ignore VBN 36297 2508 17 in in IN 36297 2508 18 most most JJS 36297 2508 19 camouflage camouflage NN 36297 2508 20 because because IN 36297 2508 21 color color NN 36297 2508 22 becomes become VBZ 36297 2508 23 less less RBR 36297 2508 24 conspicuous conspicuous JJ 36297 2508 25 as as IN 36297 2508 26 the the DT 36297 2508 27 distance distance NN 36297 2508 28 of of IN 36297 2508 29 observation observation NN 36297 2508 30 increases increase NNS 36297 2508 31 . . . 36297 2509 1 In in IN 36297 2509 2 general general JJ 36297 2509 3 , , , 36297 2509 4 the the DT 36297 2509 5 distribution distribution NN 36297 2509 6 of of IN 36297 2509 7 brightness brightness NN 36297 2509 8 or or CC 36297 2509 9 light light NN 36297 2509 10 and and CC 36297 2509 11 shade shade NN 36297 2509 12 is be VBZ 36297 2509 13 the the DT 36297 2509 14 most most RBS 36297 2509 15 important important JJ 36297 2509 16 aspect aspect NN 36297 2509 17 to to TO 36297 2509 18 be be VB 36297 2509 19 considered consider VBN 36297 2509 20 . . . 36297 2510 1 The the DT 36297 2510 2 camoufleur camoufleur NN 36297 2510 3 worries worry VBZ 36297 2510 4 over over IN 36297 2510 5 shadows shadow NNS 36297 2510 6 more more JJR 36297 2510 7 than than IN 36297 2510 8 any any DT 36297 2510 9 other other JJ 36297 2510 10 aspect aspect NN 36297 2510 11 generally generally RB 36297 2510 12 . . . 36297 2511 1 On on IN 36297 2511 2 overcast overcast JJ 36297 2511 3 days day NNS 36297 2511 4 camouflage camouflage NN 36297 2511 5 is be VBZ 36297 2511 6 generally generally RB 36297 2511 7 much much RB 36297 2511 8 more more RBR 36297 2511 9 successful successful JJ 36297 2511 10 than than IN 36297 2511 11 on on IN 36297 2511 12 sunny sunny JJ 36297 2511 13 days day NNS 36297 2511 14 . . . 36297 2512 1 Obviously obviously RB 36297 2512 2 , , , 36297 2512 3 counter counter NN 36297 2512 4 - - NN 36297 2512 5 shading shading NN 36297 2512 6 is be VBZ 36297 2512 7 resorted resort VBN 36297 2512 8 to to IN 36297 2512 9 in in IN 36297 2512 10 order order NN 36297 2512 11 to to TO 36297 2512 12 eliminate eliminate VB 36297 2512 13 shadows shadow NNS 36297 2512 14 , , , 36297 2512 15 and and CC 36297 2512 16 where where WRB 36297 2512 17 this this DT 36297 2512 18 is be VBZ 36297 2512 19 unsuccessful unsuccessful JJ 36297 2512 20 confusion confusion NN 36297 2512 21 is be VBZ 36297 2512 22 resorted resort VBN 36297 2512 23 to to IN 36297 2512 24 by by IN 36297 2512 25 making make VBG 36297 2512 26 more more JJR 36297 2512 27 shadows shadow NNS 36297 2512 28 . . . 36297 2513 1 The the DT 36297 2513 2 shape shape NN 36297 2513 3 and and CC 36297 2513 4 orientation orientation NN 36297 2513 5 of of IN 36297 2513 6 a a DT 36297 2513 7 building building NN 36297 2513 8 is be VBZ 36297 2513 9 very very RB 36297 2513 10 important important JJ 36297 2513 11 to to IN 36297 2513 12 those those DT 36297 2513 13 charged charge VBN 36297 2513 14 with with IN 36297 2513 15 the the DT 36297 2513 16 problem problem NN 36297 2513 17 of of IN 36297 2513 18 rendering render VBG 36297 2513 19 it -PRON- PRP 36297 2513 20 inconspicuous inconspicuous JJ 36297 2513 21 to to IN 36297 2513 22 the the DT 36297 2513 23 enemy enemy NN 36297 2513 24 , , , 36297 2513 25 but but CC 36297 2513 26 little little JJ 36297 2513 27 attention attention NN 36297 2513 28 has have VBZ 36297 2513 29 been be VBN 36297 2513 30 paid pay VBN 36297 2513 31 to to IN 36297 2513 32 these these DT 36297 2513 33 aspects aspect NNS 36297 2513 34 . . . 36297 2514 1 For for IN 36297 2514 2 example example NN 36297 2514 3 , , , 36297 2514 4 a a DT 36297 2514 5 hangar hangar NN 36297 2514 6 painted paint VBD 36297 2514 7 a a DT 36297 2514 8 very very RB 36297 2514 9 satisfactory satisfactory JJ 36297 2514 10 dull dull JJ 36297 2514 11 green green NN 36297 2514 12 will will MD 36297 2514 13 be be VB 36297 2514 14 distinguishable distinguishable JJ 36297 2514 15 by by IN 36297 2514 16 its -PRON- PRP$ 36297 2514 17 shape shape NN 36297 2514 18 as as IN 36297 2514 19 indicated indicate VBN 36297 2514 20 by by IN 36297 2514 21 its -PRON- PRP$ 36297 2514 22 shadow shadow NN 36297 2514 23 and and CC 36297 2514 24 shaded shaded JJ 36297 2514 25 sides side NNS 36297 2514 26 . . . 36297 2515 1 In in IN 36297 2515 2 this this DT 36297 2515 3 zone zone NN 36297 2515 4 a a DT 36297 2515 5 hangar hangar NN 36297 2515 6 , , , 36297 2515 7 for for IN 36297 2515 8 example example NN 36297 2515 9 , , , 36297 2515 10 would would MD 36297 2515 11 be be VB 36297 2515 12 more more RBR 36297 2515 13 readily readily RB 36297 2515 14 concealed conceal VBN 36297 2515 15 if if IN 36297 2515 16 its -PRON- PRP$ 36297 2515 17 length length NN 36297 2515 18 lay lay NN 36297 2515 19 north north NN 36297 2515 20 and and CC 36297 2515 21 south south NN 36297 2515 22 . . . 36297 2516 1 Its -PRON- PRP$ 36297 2516 2 sides side NNS 36297 2516 3 could could MD 36297 2516 4 be be VB 36297 2516 5 brought bring VBN 36297 2516 6 with with IN 36297 2516 7 a a DT 36297 2516 8 gradual gradual JJ 36297 2516 9 curve curve NN 36297 2516 10 to to IN 36297 2516 11 the the DT 36297 2516 12 ground ground NN 36297 2516 13 and and CC 36297 2516 14 its -PRON- PRP$ 36297 2516 15 rear rear NN 36297 2516 16 , , , 36297 2516 17 which which WDT 36297 2516 18 is be VBZ 36297 2516 19 during during IN 36297 2516 20 most most JJS 36297 2516 21 of of IN 36297 2516 22 the the DT 36297 2516 23 day day NN 36297 2516 24 in in IN 36297 2516 25 shadow shadow NN 36297 2516 26 , , , 36297 2516 27 could could MD 36297 2516 28 be be VB 36297 2516 29 effectively effectively RB 36297 2516 30 treated treat VBN 36297 2516 31 to to TO 36297 2516 32 conceal conceal VB 36297 2516 33 the the DT 36297 2516 34 shadow shadow NN 36297 2516 35 . . . 36297 2517 1 A a DT 36297 2517 2 little little JJ 36297 2517 3 thought thought NN 36297 2517 4 will will MD 36297 2517 5 convince convince VB 36297 2517 6 the the DT 36297 2517 7 reader reader NN 36297 2517 8 of of IN 36297 2517 9 the the DT 36297 2517 10 importance importance NN 36297 2517 11 of of IN 36297 2517 12 shape shape NN 36297 2517 13 and and CC 36297 2517 14 orientation orientation NN 36297 2517 15 . . . 36297 2518 1 Broken broken JJ 36297 2518 2 color color NN 36297 2518 3 or or CC 36297 2518 4 pattern pattern NN 36297 2518 5 is be VBZ 36297 2518 6 another another DT 36297 2518 7 fundamental fundamental NN 36297 2518 8 of of IN 36297 2518 9 camouflage camouflage NN 36297 2518 10 which which WDT 36297 2518 11 , , , 36297 2518 12 of of IN 36297 2518 13 course course NN 36297 2518 14 , , , 36297 2518 15 must must MD 36297 2518 16 be be VB 36297 2518 17 adapted adapt VBN 36297 2518 18 to to IN 36297 2518 19 its -PRON- PRP$ 36297 2518 20 environment environment NN 36297 2518 21 . . . 36297 2519 1 For for IN 36297 2519 2 our -PRON- PRP$ 36297 2519 3 trucks truck NNS 36297 2519 4 , , , 36297 2519 5 cannon cannon NN 36297 2519 6 , , , 36297 2519 7 and and CC 36297 2519 8 many many JJ 36297 2519 9 other other JJ 36297 2519 10 implements implement NNS 36297 2519 11 of of IN 36297 2519 12 war war NN 36297 2519 13 , , , 36297 2519 14 dark dark JJ 36297 2519 15 green green JJ 36297 2519 16 , , , 36297 2519 17 yellow yellow JJ 36297 2519 18 , , , 36297 2519 19 dark dark JJ 36297 2519 20 blue blue JJ 36297 2519 21 , , , 36297 2519 22 light light JJ 36297 2519 23 gray gray NN 36297 2519 24 , , , 36297 2519 25 and and CC 36297 2519 26 other other JJ 36297 2519 27 colors color NNS 36297 2519 28 have have VBP 36297 2519 29 been be VBN 36297 2519 30 used use VBN 36297 2519 31 in in IN 36297 2519 32 a a DT 36297 2519 33 jumble jumble NN 36297 2519 34 of of IN 36297 2519 35 large large JJ 36297 2519 36 patterns pattern NNS 36297 2519 37 . . . 36297 2520 1 A a DT 36297 2520 2 final final JJ 36297 2520 3 refinement refinement NN 36297 2520 4 is be VBZ 36297 2520 5 that that DT 36297 2520 6 of of IN 36297 2520 7 the the DT 36297 2520 8 blending blending NN 36297 2520 9 of of IN 36297 2520 10 these these DT 36297 2520 11 colors color NNS 36297 2520 12 at at IN 36297 2520 13 a a DT 36297 2520 14 distance distance NN 36297 2520 15 , , , 36297 2520 16 where where WRB 36297 2520 17 the the DT 36297 2520 18 eye eye NN 36297 2520 19 no no RB 36297 2520 20 longer long RBR 36297 2520 21 resolves resolve VBZ 36297 2520 22 the the DT 36297 2520 23 individual individual JJ 36297 2520 24 patches patch NNS 36297 2520 25 , , , 36297 2520 26 to to IN 36297 2520 27 a a DT 36297 2520 28 color color NN 36297 2520 29 which which WDT 36297 2520 30 simulates simulate VBZ 36297 2520 31 the the DT 36297 2520 32 general general NNP 36297 2520 33 hue hue NNP 36297 2520 34 of of IN 36297 2520 35 the the DT 36297 2520 36 surroundings surrounding NNS 36297 2520 37 . . . 36297 2521 1 For for IN 36297 2521 2 example example NN 36297 2521 3 , , , 36297 2521 4 red red JJ 36297 2521 5 and and CC 36297 2521 6 green green JJ 36297 2521 7 patches patch NNS 36297 2521 8 at at IN 36297 2521 9 a a DT 36297 2521 10 distance distance NN 36297 2521 11 blend blend NN 36297 2521 12 to to IN 36297 2521 13 yellow yellow NN 36297 2521 14 ; ; : 36297 2521 15 yellow yellow JJ 36297 2521 16 and and CC 36297 2521 17 blue blue JJ 36297 2521 18 patches patch NNS 36297 2521 19 blend blend VBP 36297 2521 20 to to IN 36297 2521 21 a a DT 36297 2521 22 neutral neutral JJ 36297 2521 23 gray gray NN 36297 2521 24 if if IN 36297 2521 25 suitably suitably RB 36297 2521 26 balanced balance VBN 36297 2521 27 , , , 36297 2521 28 but but CC 36297 2521 29 if if IN 36297 2521 30 not not RB 36297 2521 31 , , , 36297 2521 32 to to IN 36297 2521 33 a a DT 36297 2521 34 yellow yellow JJ 36297 2521 35 - - HYPH 36297 2521 36 gray gray JJ 36297 2521 37 or or CC 36297 2521 38 a a DT 36297 2521 39 blue blue JJ 36297 2521 40 - - HYPH 36297 2521 41 gray gray JJ 36297 2521 42 ; ; : 36297 2521 43 red red JJ 36297 2521 44 , , , 36297 2521 45 green green JJ 36297 2521 46 , , , 36297 2521 47 and and CC 36297 2521 48 blue blue JJ 36297 2521 49 if if IN 36297 2521 50 properly properly RB 36297 2521 51 balanced balance VBN 36297 2521 52 will will MD 36297 2521 53 blend blend VB 36297 2521 54 to to IN 36297 2521 55 a a DT 36297 2521 56 gray gray JJ 36297 2521 57 ; ; : 36297 2521 58 black black JJ 36297 2521 59 , , , 36297 2521 60 white white JJ 36297 2521 61 and and CC 36297 2521 62 green green JJ 36297 2521 63 patches patch NNS 36297 2521 64 will will MD 36297 2521 65 blend blend VB 36297 2521 66 to to IN 36297 2521 67 a a DT 36297 2521 68 green green JJ 36297 2521 69 shade shade NN 36297 2521 70 , , , 36297 2521 71 and and CC 36297 2521 72 so so RB 36297 2521 73 on on RB 36297 2521 74 . . . 36297 2522 1 These these DT 36297 2522 2 facts fact NNS 36297 2522 3 are be VBP 36297 2522 4 simple simple JJ 36297 2522 5 to to IN 36297 2522 6 those those DT 36297 2522 7 who who WP 36297 2522 8 are be VBP 36297 2522 9 familiar familiar JJ 36297 2522 10 with with IN 36297 2522 11 the the DT 36297 2522 12 science science NN 36297 2522 13 of of IN 36297 2522 14 light light NN 36297 2522 15 and and CC 36297 2522 16 color color NN 36297 2522 17 , , , 36297 2522 18 but but CC 36297 2522 19 the the DT 36297 2522 20 artist artist NN 36297 2522 21 , , , 36297 2522 22 whose whose WP$ 36297 2522 23 knowledge knowledge NN 36297 2522 24 is be VBZ 36297 2522 25 based base VBN 36297 2522 26 upon upon IN 36297 2522 27 the the DT 36297 2522 28 mixture mixture NN 36297 2522 29 of of IN 36297 2522 30 pigments pigment NNS 36297 2522 31 , , , 36297 2522 32 sometimes sometimes RB 36297 2522 33 errs err VBZ 36297 2522 34 in in IN 36297 2522 35 considering consider VBG 36297 2522 36 this this DT 36297 2522 37 aspect aspect NN 36297 2522 38 of of IN 36297 2522 39 color color NN 36297 2522 40 - - HYPH 36297 2522 41 blending blending NN 36297 2522 42 by by IN 36297 2522 43 distance distance NN 36297 2522 44 . . . 36297 2523 1 For for IN 36297 2523 2 example example NN 36297 2523 3 , , , 36297 2523 4 it -PRON- PRP 36297 2523 5 is be VBZ 36297 2523 6 not not RB 36297 2523 7 uncommon uncommon JJ 36297 2523 8 for for IN 36297 2523 9 him -PRON- PRP 36297 2523 10 to to IN 36297 2523 11 state state VB 36297 2523 12 that that IN 36297 2523 13 at at IN 36297 2523 14 a a DT 36297 2523 15 distance distance NN 36297 2523 16 yellow yellow JJ 36297 2523 17 and and CC 36297 2523 18 blue blue JJ 36297 2523 19 patches patch NNS 36297 2523 20 blend blend VBP 36297 2523 21 to to TO 36297 2523 22 make make VB 36297 2523 23 green green JJ 36297 2523 24 , , , 36297 2523 25 but but CC 36297 2523 26 the the DT 36297 2523 27 addition addition NN 36297 2523 28 of of IN 36297 2523 29 lights light NNS 36297 2523 30 or or CC 36297 2523 31 of of IN 36297 2523 32 juxtaposed juxtaposed JJ 36297 2523 33 colors color NNS 36297 2523 34 is be VBZ 36297 2523 35 quite quite RB 36297 2523 36 different different JJ 36297 2523 37 in in IN 36297 2523 38 result result NN 36297 2523 39 from from IN 36297 2523 40 the the DT 36297 2523 41 addition addition NN 36297 2523 42 of of IN 36297 2523 43 pigments pigment NNS 36297 2523 44 by by IN 36297 2523 45 intimately intimately RB 36297 2523 46 mixing mix VBG 36297 2523 47 them -PRON- PRP 36297 2523 48 . . . 36297 2524 1 In in IN 36297 2524 2 constructing construct VBG 36297 2524 3 such such PDT 36297 2524 4 a a DT 36297 2524 5 pattern pattern NN 36297 2524 6 of of IN 36297 2524 7 various various JJ 36297 2524 8 colors color NNS 36297 2524 9 it -PRON- PRP 36297 2524 10 is be VBZ 36297 2524 11 also also RB 36297 2524 12 desirable desirable JJ 36297 2524 13 to to TO 36297 2524 14 have have VB 36297 2524 15 the the DT 36297 2524 16 final final JJ 36297 2524 17 mean mean JJ 36297 2524 18 brightness brightness NN 36297 2524 19 approximate approximate JJ 36297 2524 20 that that DT 36297 2524 21 of of IN 36297 2524 22 the the DT 36297 2524 23 general general JJ 36297 2524 24 surroundings surrounding NNS 36297 2524 25 . . . 36297 2525 1 This this DT 36297 2525 2 problem problem NN 36297 2525 3 can can MD 36297 2525 4 be be VB 36297 2525 5 solved solve VBN 36297 2525 6 by by IN 36297 2525 7 means mean NNS 36297 2525 8 of of IN 36297 2525 9 the the DT 36297 2525 10 photometer photometer NN 36297 2525 11 and and CC 36297 2525 12 a a DT 36297 2525 13 formula formula NN 36297 2525 14 provided provide VBN 36297 2525 15 , , , 36297 2525 16 which which WDT 36297 2525 17 states state VBZ 36297 2525 18 , , , 36297 2525 19 for for IN 36297 2525 20 example example NN 36297 2525 21 , , , 36297 2525 22 that that IN 36297 2525 23 a a DT 36297 2525 24 certain certain JJ 36297 2525 25 percentage percentage NN 36297 2525 26 of of IN 36297 2525 27 the the DT 36297 2525 28 total total JJ 36297 2525 29 area area NN 36297 2525 30 be be VB 36297 2525 31 painted paint VBN 36297 2525 32 in in IN 36297 2525 33 gray gray NNP 36297 2525 34 , , , 36297 2525 35 another another DT 36297 2525 36 percentage percentage NN 36297 2525 37 in in IN 36297 2525 38 green green JJ 36297 2525 39 , , , 36297 2525 40 and and CC 36297 2525 41 so so RB 36297 2525 42 on on RB 36297 2525 43 . . . 36297 2526 1 The the DT 36297 2526 2 photometer photometer NN 36297 2526 3 has have VBZ 36297 2526 4 played play VBN 36297 2526 5 an an DT 36297 2526 6 important important JJ 36297 2526 7 rôle rôle NN 36297 2526 8 in in IN 36297 2526 9 establishing establish VBG 36297 2526 10 the the DT 36297 2526 11 scientific scientific JJ 36297 2526 12 basis basis NN 36297 2526 13 of of IN 36297 2526 14 camouflage camouflage NN 36297 2526 15 . . . 36297 2527 1 The the DT 36297 2527 2 size size NN 36297 2527 3 of of IN 36297 2527 4 the the DT 36297 2527 5 pattern pattern NN 36297 2527 6 must must MD 36297 2527 7 be be VB 36297 2527 8 governed govern VBN 36297 2527 9 by by IN 36297 2527 10 the the DT 36297 2527 11 distance distance NN 36297 2527 12 at at IN 36297 2527 13 which which WDT 36297 2527 14 it -PRON- PRP 36297 2527 15 is be VBZ 36297 2527 16 to to TO 36297 2527 17 be be VB 36297 2527 18 viewed view VBN 36297 2527 19 , , , 36297 2527 20 for for IN 36297 2527 21 obviously obviously RB 36297 2527 22 if if IN 36297 2527 23 too too RB 36297 2527 24 small small JJ 36297 2527 25 the the DT 36297 2527 26 effect effect NN 36297 2527 27 is be VBZ 36297 2527 28 that that DT 36297 2527 29 of of IN 36297 2527 30 solid solid JJ 36297 2527 31 color color NN 36297 2527 32 , , , 36297 2527 33 and and CC 36297 2527 34 if if IN 36297 2527 35 too too RB 36297 2527 36 large large JJ 36297 2527 37 it -PRON- PRP 36297 2527 38 will will MD 36297 2527 39 render render VB 36297 2527 40 the the DT 36297 2527 41 object object NN 36297 2527 42 conspicuous conspicuous JJ 36297 2527 43 , , , 36297 2527 44 which which WDT 36297 2527 45 is be VBZ 36297 2527 46 a a DT 36297 2527 47 disadvantage disadvantage NN 36297 2527 48 ranking rank VBG 36297 2527 49 next next RB 36297 2527 50 to to TO 36297 2527 51 recognizable recognizable VB 36297 2527 52 . . . 36297 2528 1 Where where WRB 36297 2528 2 the the DT 36297 2528 3 artist artist NN 36297 2528 4 is be VBZ 36297 2528 5 concerned concern VBN 36297 2528 6 with with IN 36297 2528 7 a a DT 36297 2528 8 background background NN 36297 2528 9 which which WDT 36297 2528 10 does do VBZ 36297 2528 11 not not RB 36297 2528 12 include include VB 36297 2528 13 the the DT 36297 2528 14 sky sky NN 36297 2528 15 , , , 36297 2528 16 that that RB 36297 2528 17 is is RB 36297 2528 18 , , , 36297 2528 19 where where WRB 36297 2528 20 he -PRON- PRP 36297 2528 21 deals deal VBZ 36297 2528 22 only only RB 36297 2528 23 with with IN 36297 2528 24 _ _ NNP 36297 2528 25 illuminated illuminate VBN 36297 2528 26 _ _ NNP 36297 2528 27 objects object NNS 36297 2528 28 on on IN 36297 2528 29 the the DT 36297 2528 30 earth earth NN 36297 2528 31 , , , 36297 2528 32 his -PRON- PRP$ 36297 2528 33 trained train VBN 36297 2528 34 eye eye NN 36297 2528 35 is be VBZ 36297 2528 36 valuable valuable JJ 36297 2528 37 provided provide VBN 36297 2528 38 the the DT 36297 2528 39 colors color NNS 36297 2528 40 used use VBD 36297 2528 41 meet meet VBP 36297 2528 42 the the DT 36297 2528 43 demands demand NNS 36297 2528 44 made make VBN 36297 2528 45 by by IN 36297 2528 46 photographic photographic JJ 36297 2528 47 plates plate NNS 36297 2528 48 and and CC 36297 2528 49 visual visual JJ 36297 2528 50 color color NN 36297 2528 51 - - HYPH 36297 2528 52 filters filter NNS 36297 2528 53 . . . 36297 2529 1 In in IN 36297 2529 2 other other JJ 36297 2529 3 words word NNS 36297 2529 4 , , , 36297 2529 5 the the DT 36297 2529 6 sky sky NN 36297 2529 7 as as IN 36297 2529 8 a a DT 36297 2529 9 background background NN 36297 2529 10 gives give VBZ 36297 2529 11 trouble trouble NN 36297 2529 12 to to IN 36297 2529 13 all all DT 36297 2529 14 who who WP 36297 2529 15 are be VBP 36297 2529 16 unfamiliar unfamiliar JJ 36297 2529 17 with with IN 36297 2529 18 scientific scientific JJ 36297 2529 19 measurements measurement NNS 36297 2529 20 . . . 36297 2530 1 The the DT 36297 2530 2 brightnesses brightness NNS 36297 2530 3 of of IN 36297 2530 4 sky sky NN 36297 2530 5 and and CC 36297 2530 6 clouds cloud NNS 36297 2530 7 are be VBP 36297 2530 8 outside outside IN 36297 2530 9 the the DT 36297 2530 10 scale scale NN 36297 2530 11 of of IN 36297 2530 12 brightnesses brightness NNS 36297 2530 13 ordinarily ordinarily RB 36297 2530 14 encountered encounter VBN 36297 2530 15 in in IN 36297 2530 16 a a DT 36297 2530 17 landscape landscape NN 36297 2530 18 . . . 36297 2531 1 Many many JJ 36297 2531 2 interesting interesting JJ 36297 2531 3 instances instance NNS 36297 2531 4 of of IN 36297 2531 5 the the DT 36297 2531 6 artist artist NN 36297 2531 7 's 's POS 36297 2531 8 mistakes mistake NNS 36297 2531 9 in in IN 36297 2531 10 dealing deal VBG 36297 2531 11 with with IN 36297 2531 12 these these DT 36297 2531 13 backgrounds background NNS 36297 2531 14 could could MD 36297 2531 15 be be VB 36297 2531 16 presented present VBN 36297 2531 17 ; ; : 36297 2531 18 however however RB 36297 2531 19 , , , 36297 2531 20 the the DT 36297 2531 21 artist artist NN 36297 2531 22 's 's POS 36297 2531 23 trained train VBN 36297 2531 24 eye eye NN 36297 2531 25 has have VBZ 36297 2531 26 been be VBN 36297 2531 27 a a DT 36297 2531 28 great great JJ 36297 2531 29 aid aid NN 36297 2531 30 in in IN 36297 2531 31 constructing construct VBG 36297 2531 32 patterns pattern NNS 36297 2531 33 and and CC 36297 2531 34 various various JJ 36297 2531 35 other other JJ 36297 2531 36 types type NNS 36297 2531 37 of of IN 36297 2531 38 camouflage camouflage NN 36297 2531 39 . . . 36297 2532 1 One one CD 36297 2532 2 of of IN 36297 2532 3 the the DT 36297 2532 4 most most RBS 36297 2532 5 conspicuous conspicuous JJ 36297 2532 6 aspects aspect NNS 36297 2532 7 of of IN 36297 2532 8 the the DT 36297 2532 9 earth earth NN 36297 2532 10 's 's POS 36297 2532 11 surface surface NN 36297 2532 12 is be VBZ 36297 2532 13 its -PRON- PRP$ 36297 2532 14 texture texture NN 36297 2532 15 . . . 36297 2533 1 From from IN 36297 2533 2 great great JJ 36297 2533 3 heights height NNS 36297 2533 4 it -PRON- PRP 36297 2533 5 appears appear VBZ 36297 2533 6 flat flat JJ 36297 2533 7 , , , 36297 2533 8 that that RB 36297 2533 9 is is RB 36297 2533 10 , , , 36297 2533 11 rolling roll VBG 36297 2533 12 land land NN 36297 2533 13 is be VBZ 36297 2533 14 ironed iron VBN 36297 2533 15 out out RP 36297 2533 16 and and CC 36297 2533 17 the the DT 36297 2533 18 general general JJ 36297 2533 19 contour contour NN 36297 2533 20 of of IN 36297 2533 21 the the DT 36297 2533 22 ground ground NN 36297 2533 23 is be VBZ 36297 2533 24 flattened flatten VBN 36297 2533 25 . . . 36297 2534 1 However however RB 36297 2534 2 , , , 36297 2534 3 the the DT 36297 2534 4 element element NN 36297 2534 5 of of IN 36297 2534 6 texture texture NN 36297 2534 7 always always RB 36297 2534 8 remains remain VBZ 36297 2534 9 . . . 36297 2535 1 This this DT 36297 2535 2 is be VBZ 36297 2535 3 the the DT 36297 2535 4 chief chief JJ 36297 2535 5 reason reason NN 36297 2535 6 for for IN 36297 2535 7 the the DT 36297 2535 8 extensive extensive JJ 36297 2535 9 use use NN 36297 2535 10 of of IN 36297 2535 11 netting net VBG 36297 2535 12 on on IN 36297 2535 13 which which WDT 36297 2535 14 dyed dye VBD 36297 2535 15 raffia raffia NNP 36297 2535 16 , , , 36297 2535 17 foliage foliage NNP 36297 2535 18 , , , 36297 2535 19 pieces piece NNS 36297 2535 20 of of IN 36297 2535 21 colored colored JJ 36297 2535 22 cloth cloth NN 36297 2535 23 , , , 36297 2535 24 etc etc FW 36297 2535 25 . . . 36297 2535 26 , , , 36297 2535 27 are be VBP 36297 2535 28 tied tie VBN 36297 2535 29 . . . 36297 2536 1 Such such JJ 36297 2536 2 network network NN 36297 2536 3 has have VBZ 36297 2536 4 concealed conceal VBN 36297 2536 5 many many JJ 36297 2536 6 guns gun NNS 36297 2536 7 , , , 36297 2536 8 headquarters headquarters NN 36297 2536 9 , , , 36297 2536 10 ammunition ammunition NN 36297 2536 11 dumps dump NNS 36297 2536 12 , , , 36297 2536 13 communication communication NN 36297 2536 14 trenches trench NNS 36297 2536 15 , , , 36297 2536 16 roadways roadway NNS 36297 2536 17 , , , 36297 2536 18 etc etc FW 36297 2536 19 . . . 36297 2537 1 When when WRB 36297 2537 2 this this DT 36297 2537 3 has have VBZ 36297 2537 4 been be VBN 36297 2537 5 well well RB 36297 2537 6 done do VBN 36297 2537 7 the the DT 36297 2537 8 concealment concealment NN 36297 2537 9 is be VBZ 36297 2537 10 perfect perfect JJ 36297 2537 11 . . . 36297 2538 1 One one CD 36297 2538 2 of of IN 36297 2538 3 the the DT 36297 2538 4 greatest great JJS 36297 2538 5 annoyances annoyance NNS 36297 2538 6 to to IN 36297 2538 7 the the DT 36297 2538 8 camoufleur camoufleur NN 36297 2538 9 is be VBZ 36297 2538 10 the the DT 36297 2538 11 lack lack NN 36297 2538 12 of of IN 36297 2538 13 dullness dullness NN 36297 2538 14 or or CC 36297 2538 15 " " `` 36297 2538 16 flatness flatness NN 36297 2538 17 " " '' 36297 2538 18 of of IN 36297 2538 19 the the DT 36297 2538 20 paints paint NNS 36297 2538 21 , , , 36297 2538 22 fabrics fabric NNS 36297 2538 23 , , , 36297 2538 24 and and CC 36297 2538 25 some some DT 36297 2538 26 of of IN 36297 2538 27 the the DT 36297 2538 28 other other JJ 36297 2538 29 media medium NNS 36297 2538 30 used use VBN 36297 2538 31 . . . 36297 2539 1 When when WRB 36297 2539 2 viewed view VBN 36297 2539 3 at at IN 36297 2539 4 some some DT 36297 2539 5 angles angle NNS 36297 2539 6 the the DT 36297 2539 7 glint glint NN 36297 2539 8 of of IN 36297 2539 9 highlights highlight NNS 36297 2539 10 due due IN 36297 2539 11 to to IN 36297 2539 12 specular specular JJ 36297 2539 13 reflection reflection NN 36297 2539 14 renders render VBZ 36297 2539 15 the the DT 36297 2539 16 work work NN 36297 2539 17 very very RB 36297 2539 18 conspicuous conspicuous JJ 36297 2539 19 . . . 36297 2540 1 For for IN 36297 2540 2 this this DT 36297 2540 3 reason reason NN 36297 2540 4 natural natural JJ 36297 2540 5 foliage foliage NN 36297 2540 6 or or CC 36297 2540 7 such such JJ 36297 2540 8 material material NN 36297 2540 9 as as IN 36297 2540 10 dyed dye VBN 36297 2540 11 raffia raffia NNP 36297 2540 12 has have VBZ 36297 2540 13 been be VBN 36297 2540 14 very very RB 36297 2540 15 successful successful JJ 36297 2540 16 . . . 36297 2541 1 Systems system NNS 36297 2541 2 of of IN 36297 2541 3 network network NN 36297 2541 4 and and CC 36297 2541 5 vertical vertical JJ 36297 2541 6 screens screen NNS 36297 2541 7 have have VBP 36297 2541 8 been be VBN 36297 2541 9 extensively extensively RB 36297 2541 10 employed employ VBN 36297 2541 11 on on IN 36297 2541 12 roadways roadway NNS 36297 2541 13 near near IN 36297 2541 14 the the DT 36297 2541 15 front front NN 36297 2541 16 , , , 36297 2541 17 not not RB 36297 2541 18 for for IN 36297 2541 19 the the DT 36297 2541 20 purpose purpose NN 36297 2541 21 of of IN 36297 2541 22 concealing conceal VBG 36297 2541 23 from from IN 36297 2541 24 the the DT 36297 2541 25 enemy enemy NN 36297 2541 26 the the DT 36297 2541 27 fact fact NN 36297 2541 28 that that IN 36297 2541 29 the the DT 36297 2541 30 roadways roadway NNS 36297 2541 31 exist exist VBP 36297 2541 32 , , , 36297 2541 33 but but CC 36297 2541 34 to to TO 36297 2541 35 make make VB 36297 2541 36 it -PRON- PRP 36297 2541 37 necessary necessary JJ 36297 2541 38 to to TO 36297 2541 39 shell shell VB 36297 2541 40 the the DT 36297 2541 41 entire entire JJ 36297 2541 42 roadway roadway NN 36297 2541 43 continually continually RB 36297 2541 44 if if IN 36297 2541 45 it -PRON- PRP 36297 2541 46 is be VBZ 36297 2541 47 hoped hope VBN 36297 2541 48 to to TO 36297 2541 49 prevent prevent VB 36297 2541 50 its -PRON- PRP$ 36297 2541 51 use use NN 36297 2541 52 . . . 36297 2542 1 Although although IN 36297 2542 2 the the DT 36297 2542 3 camoufleur camoufleur NN 36297 2542 4 is be VBZ 36297 2542 5 provided provide VBN 36297 2542 6 with with IN 36297 2542 7 a a DT 36297 2542 8 vast vast JJ 36297 2542 9 amount amount NN 36297 2542 10 of of IN 36297 2542 11 material material NN 36297 2542 12 for for IN 36297 2542 13 his -PRON- PRP$ 36297 2542 14 work work NN 36297 2542 15 , , , 36297 2542 16 many many JJ 36297 2542 17 of of IN 36297 2542 18 his -PRON- PRP$ 36297 2542 19 requirements requirement NNS 36297 2542 20 are be VBP 36297 2542 21 met meet VBN 36297 2542 22 by by IN 36297 2542 23 the the DT 36297 2542 24 material material NN 36297 2542 25 at at IN 36297 2542 26 hand hand NN 36297 2542 27 . . . 36297 2543 1 Obviously obviously RB 36297 2543 2 , , , 36297 2543 3 the the DT 36297 2543 4 most most RBS 36297 2543 5 convenient convenient JJ 36297 2543 6 method method NN 36297 2543 7 of of IN 36297 2543 8 providing provide VBG 36297 2543 9 concealment concealment NN 36297 2543 10 for for IN 36297 2543 11 a a DT 36297 2543 12 given give VBN 36297 2543 13 environment environment NN 36297 2543 14 is be VBZ 36297 2543 15 to to TO 36297 2543 16 use use VB 36297 2543 17 the the DT 36297 2543 18 materials material NNS 36297 2543 19 of of IN 36297 2543 20 the the DT 36297 2543 21 environment environment NN 36297 2543 22 . . . 36297 2544 1 Hence hence RB 36297 2544 2 , , , 36297 2544 3 rubbish rubbish NN 36297 2544 4 from from IN 36297 2544 5 ruined ruin VBN 36297 2544 6 buildings building NNS 36297 2544 7 or or CC 36297 2544 8 villages village NNS 36297 2544 9 supplies supply NNS 36297 2544 10 camouflage camouflage NN 36297 2544 11 for for IN 36297 2544 12 guns gun NNS 36297 2544 13 , , , 36297 2544 14 huts hut NNS 36297 2544 15 , , , 36297 2544 16 etc etc FW 36297 2544 17 . . FW 36297 2544 18 , , , 36297 2544 19 in in IN 36297 2544 20 that that DT 36297 2544 21 environment environment NN 36297 2544 22 . . . 36297 2545 1 In in IN 36297 2545 2 woods wood NNS 36297 2545 3 the the DT 36297 2545 4 material material NN 36297 2545 5 to to TO 36297 2545 6 simulate simulate VB 36297 2545 7 the the DT 36297 2545 8 woods wood NNS 36297 2545 9 is be VBZ 36297 2545 10 at at IN 36297 2545 11 hand hand NN 36297 2545 12 . . . 36297 2546 1 Many many JJ 36297 2546 2 of of IN 36297 2546 3 these these DT 36297 2546 4 aspects aspect NNS 36297 2546 5 are be VBP 36297 2546 6 so so RB 36297 2546 7 obvious obvious JJ 36297 2546 8 to to IN 36297 2546 9 the the DT 36297 2546 10 reader reader NN 36297 2546 11 that that DT 36297 2546 12 space space NN 36297 2546 13 will will MD 36297 2546 14 not not RB 36297 2546 15 be be VB 36297 2546 16 given give VBN 36297 2546 17 to to IN 36297 2546 18 their -PRON- PRP$ 36297 2546 19 consideration consideration NN 36297 2546 20 . . . 36297 2547 1 The the DT 36297 2547 2 color color NN 36297 2547 3 of of IN 36297 2547 4 the the DT 36297 2547 5 soil soil NN 36297 2547 6 is be VBZ 36297 2547 7 important important JJ 36297 2547 8 , , , 36297 2547 9 for for IN 36297 2547 10 if if IN 36297 2547 11 it -PRON- PRP 36297 2547 12 is be VBZ 36297 2547 13 conspicuous conspicuous JJ 36297 2547 14 the the DT 36297 2547 15 camoufleur camoufleur NN 36297 2547 16 must must MD 36297 2547 17 provide provide VB 36297 2547 18 screens screen NNS 36297 2547 19 of of IN 36297 2547 20 natural natural JJ 36297 2547 21 turf turf NN 36297 2547 22 . . . 36297 2548 1 In in IN 36297 2548 2 this this DT 36297 2548 3 great great JJ 36297 2548 4 game game NN 36297 2548 5 of of IN 36297 2548 6 hocus hocus NN 36297 2548 7 - - HYPH 36297 2548 8 pocus pocus NN 36297 2548 9 many many JJ 36297 2548 10 deceptions deception NNS 36297 2548 11 are be VBP 36297 2548 12 resorted resorted JJ 36297 2548 13 to to IN 36297 2548 14 . . . 36297 2549 1 Replicas replica NNS 36297 2549 2 of of IN 36297 2549 3 large large JJ 36297 2549 4 guns gun NNS 36297 2549 5 and and CC 36297 2549 6 trenches trench NNS 36297 2549 7 are be VBP 36297 2549 8 made make VBN 36297 2549 9 ; ; , 36297 2549 10 dummy dummy JJ 36297 2549 11 soldiers soldier NNS 36297 2549 12 are be VBP 36297 2549 13 used use VBN 36297 2549 14 to to TO 36297 2549 15 foil foil VB 36297 2549 16 the the DT 36297 2549 17 sniper sniper NN 36297 2549 18 and and CC 36297 2549 19 to to TO 36297 2549 20 make make VB 36297 2549 21 him -PRON- PRP 36297 2549 22 reveal reveal VB 36297 2549 23 his -PRON- PRP$ 36297 2549 24 location location NN 36297 2549 25 , , , 36297 2549 26 and and CC 36297 2549 27 papier papier NNP 36297 2549 28 - - HYPH 36297 2549 29 maché maché NNP 36297 2549 30 horses horse NNS 36297 2549 31 , , , 36297 2549 32 trees tree NNS 36297 2549 33 , , , 36297 2549 34 and and CC 36297 2549 35 other other JJ 36297 2549 36 objects object NNS 36297 2549 37 conceal conceal NN 36297 2549 38 snipers sniper NNS 36297 2549 39 and and CC 36297 2549 40 observers observer NNS 36297 2549 41 and and CC 36297 2549 42 afford afford VB 36297 2549 43 listening listening NN 36297 2549 44 posts post NNS 36297 2549 45 . . . 36297 2550 1 Gunners gunner NNS 36297 2550 2 have have VBP 36297 2550 3 been be VBN 36297 2550 4 dressed dress VBN 36297 2550 5 in in IN 36297 2550 6 summer summer NN 36297 2550 7 in in IN 36297 2550 8 green green JJ 36297 2550 9 flowing flow VBG 36297 2550 10 robes robe NNS 36297 2550 11 . . . 36297 2551 1 In in IN 36297 2551 2 winter winter NN 36297 2551 3 white white JJ 36297 2551 4 robes robe NNS 36297 2551 5 have have VBP 36297 2551 6 been be VBN 36297 2551 7 utilized utilize VBN 36297 2551 8 . . . 36297 2552 1 How how WRB 36297 2552 2 far far RB 36297 2552 3 away away RB 36297 2552 4 from from IN 36297 2552 5 modern modern JJ 36297 2552 6 warriors warrior NNS 36297 2552 7 are be VBP 36297 2552 8 all all PDT 36297 2552 9 the the DT 36297 2552 10 usual usual JJ 36297 2552 11 glitter glitter NN 36297 2552 12 and and CC 36297 2552 13 glamour glamour NN 36297 2552 14 of of IN 36297 2552 15 military military NNP 36297 2552 16 impedimenta impedimenta NNP 36297 2552 17 in in IN 36297 2552 18 the the DT 36297 2552 19 past past JJ 36297 2552 20 parades parade NNS 36297 2552 21 of of IN 36297 2552 22 peace peace NN 36297 2552 23 time time NN 36297 2552 24 ! ! . 36297 2553 1 The the DT 36297 2553 2 armies army NNS 36297 2553 3 now now RB 36297 2553 4 dig dig VBP 36297 2553 5 in in RP 36297 2553 6 for for IN 36297 2553 7 concealment concealment NN 36297 2553 8 . . . 36297 2554 1 The the DT 36297 2554 2 artillery artillery NN 36297 2554 3 is be VBZ 36297 2554 4 no no DT 36297 2554 5 longer long RBR 36297 2554 6 invisible invisible JJ 36297 2554 7 behind behind IN 36297 2554 8 yonder yonder NNP 36297 2554 9 hill hill NNP 36297 2554 10 , , , 36297 2554 11 for for IN 36297 2554 12 the the DT 36297 2554 13 eyes eye NNS 36297 2554 14 of of IN 36297 2554 15 the the DT 36297 2554 16 aerial aerial JJ 36297 2554 17 observer observer NN 36297 2554 18 of of IN 36297 2554 19 the the DT 36297 2554 20 camera camera NN 36297 2554 21 reveal reveal VBP 36297 2554 22 its -PRON- PRP$ 36297 2554 23 position position NN 36297 2554 24 unless unless IN 36297 2554 25 camouflaged camouflage VBN 36297 2554 26 for for IN 36297 2554 27 the the DT 36297 2554 28 third third JJ 36297 2554 29 dimension dimension NN 36297 2554 30 . . . 36297 2555 1 In in IN 36297 2555 2 the the DT 36297 2555 3 foregoing foregoing NN 36297 2555 4 only only RB 36297 2555 5 the the DT 36297 2555 6 highlights highlight NNS 36297 2555 7 of of IN 36297 2555 8 a a DT 36297 2555 9 vast vast JJ 36297 2555 10 art art NN 36297 2555 11 have have VBP 36297 2555 12 been be VBN 36297 2555 13 viewed view VBN 36297 2555 14 , , , 36297 2555 15 but but CC 36297 2555 16 the the DT 36297 2555 17 art art NN 36297 2555 18 is be VBZ 36297 2555 19 still still RB 36297 2555 20 vaster vast JJR 36297 2555 21 , , , 36297 2555 22 for for IN 36297 2555 23 it -PRON- PRP 36297 2555 24 extends extend VBZ 36297 2555 25 into into IN 36297 2555 26 other other JJ 36297 2555 27 fields field NNS 36297 2555 28 . . . 36297 2556 1 Sound sound NN 36297 2556 2 must must MD 36297 2556 3 sometimes sometimes RB 36297 2556 4 be be VB 36297 2556 5 camouflaged camouflage VBN 36297 2556 6 and and CC 36297 2556 7 this this DT 36297 2556 8 can can MD 36297 2556 9 only only RB 36297 2556 10 be be VB 36297 2556 11 done do VBN 36297 2556 12 by by IN 36297 2556 13 using use VBG 36297 2556 14 the the DT 36297 2556 15 same same JJ 36297 2556 16 medium medium NN 36297 2556 17 -- -- : 36297 2556 18 sound sound NN 36297 2556 19 . . . 36297 2557 1 In in IN 36297 2557 2 these these DT 36297 2557 3 days day NNS 36297 2557 4 of of IN 36297 2557 5 scientific scientific JJ 36297 2557 6 warfare warfare NN 36297 2557 7 it -PRON- PRP 36297 2557 8 is be VBZ 36297 2557 9 to to TO 36297 2557 10 be be VB 36297 2557 11 expected expect VBN 36297 2557 12 that that IN 36297 2557 13 the the DT 36297 2557 14 positions position NNS 36297 2557 15 of of IN 36297 2557 16 enemy enemy NN 36297 2557 17 guns gun NNS 36297 2557 18 would would MD 36297 2557 19 be be VB 36297 2557 20 detected detect VBN 36297 2557 21 by by IN 36297 2557 22 other other JJ 36297 2557 23 means mean NNS 36297 2557 24 than than IN 36297 2557 25 employed employ VBN 36297 2557 26 in in IN 36297 2557 27 the the DT 36297 2557 28 past past NN 36297 2557 29 . . . 36297 2558 1 A a DT 36297 2558 2 notable notable JJ 36297 2558 3 method method NN 36297 2558 4 is be VBZ 36297 2558 5 the the DT 36297 2558 6 use use NN 36297 2558 7 of of IN 36297 2558 8 velocity velocity NN 36297 2558 9 of of IN 36297 2558 10 sound sound NN 36297 2558 11 . . . 36297 2559 1 Records record NNS 36297 2559 2 are be VBP 36297 2559 3 made make VBN 36297 2559 4 at at IN 36297 2559 5 various various JJ 36297 2559 6 stations station NNS 36297 2559 7 of of IN 36297 2559 8 the the DT 36297 2559 9 firing firing NN 36297 2559 10 of of IN 36297 2559 11 a a DT 36297 2559 12 gun gun NN 36297 2559 13 and and CC 36297 2559 14 the the DT 36297 2559 15 explosion explosion NN 36297 2559 16 of of IN 36297 2559 17 the the DT 36297 2559 18 shell shell NN 36297 2559 19 . . . 36297 2560 1 By by IN 36297 2560 2 trigonometric trigonometric JJ 36297 2560 3 laws law NNS 36297 2560 4 the the DT 36297 2560 5 position position NN 36297 2560 6 of of IN 36297 2560 7 the the DT 36297 2560 8 gun gun NN 36297 2560 9 is be VBZ 36297 2560 10 ascertained ascertain VBN 36297 2560 11 . . . 36297 2561 1 It -PRON- PRP 36297 2561 2 is be VBZ 36297 2561 3 said say VBN 36297 2561 4 that that IN 36297 2561 5 the the DT 36297 2561 6 Germans Germans NNPS 36297 2561 7 fired fire VBD 36297 2561 8 a a DT 36297 2561 9 number number NN 36297 2561 10 of of IN 36297 2561 11 guns gun NNS 36297 2561 12 simultaneously simultaneously RB 36297 2561 13 with with IN 36297 2561 14 the the DT 36297 2561 15 " " `` 36297 2561 16 75-mile 75-mile CD 36297 2561 17 " " '' 36297 2561 18 gun gun NN 36297 2561 19 in in IN 36297 2561 20 order order NN 36297 2561 21 to to TO 36297 2561 22 camouflage camouflage VB 36297 2561 23 its -PRON- PRP$ 36297 2561 24 location location NN 36297 2561 25 . . . 36297 2562 1 The the DT 36297 2562 2 airplane airplane NN 36297 2562 3 and and CC 36297 2562 4 submarine submarine NN 36297 2562 5 would would MD 36297 2562 6 gladly gladly RB 36297 2562 7 employ employ VB 36297 2562 8 sound sound JJ 36297 2562 9 camouflage camouflage NN 36297 2562 10 in in IN 36297 2562 11 order order NN 36297 2562 12 to to TO 36297 2562 13 foil foil VB 36297 2562 14 the the DT 36297 2562 15 sound sound JJ 36297 2562 16 detector detector NN 36297 2562 17 if if IN 36297 2562 18 practicable practicable JJ 36297 2562 19 solutions solution NNS 36297 2562 20 were be VBD 36297 2562 21 proposed propose VBN 36297 2562 22 . . . 36297 2563 1 The the DT 36297 2563 2 foregoing foregoing NN 36297 2563 3 is be VBZ 36297 2563 4 a a DT 36297 2563 5 brief brief JJ 36297 2563 6 statement statement NN 36297 2563 7 of of IN 36297 2563 8 some some DT 36297 2563 9 of of IN 36297 2563 10 the the DT 36297 2563 11 fundamental fundamental JJ 36297 2563 12 principles principle NNS 36297 2563 13 of of IN 36297 2563 14 land land NN 36297 2563 15 camouflage camouflage NN 36297 2563 16 . . . 36297 2564 1 Let let VB 36297 2564 2 us -PRON- PRP 36297 2564 3 now now RB 36297 2564 4 briefly briefly RB 36297 2564 5 consider consider VB 36297 2564 6 the the DT 36297 2564 7 eyes eye NNS 36297 2564 8 of of IN 36297 2564 9 the the DT 36297 2564 10 enemy enemy NN 36297 2564 11 . . . 36297 2565 1 Of of RB 36297 2565 2 course course RB 36297 2565 3 , , , 36297 2565 4 much much JJ 36297 2565 5 concealment concealment NN 36297 2565 6 and and CC 36297 2565 7 deception deception NN 36297 2565 8 is be VBZ 36297 2565 9 devised devise VBN 36297 2565 10 to to TO 36297 2565 11 foil foil VB 36297 2565 12 the the DT 36297 2565 13 observer observer NN 36297 2565 14 who who WP 36297 2565 15 is be VBZ 36297 2565 16 on on IN 36297 2565 17 the the DT 36297 2565 18 ground ground NN 36297 2565 19 and and CC 36297 2565 20 fairly fairly RB 36297 2565 21 close close JJ 36297 2565 22 . . . 36297 2566 1 The the DT 36297 2566 2 procedure procedure NN 36297 2566 3 is be VBZ 36297 2566 4 obvious obvious JJ 36297 2566 5 to to IN 36297 2566 6 the the DT 36297 2566 7 average average JJ 36297 2566 8 imagination imagination NN 36297 2566 9 ; ; : 36297 2566 10 however however RB 36297 2566 11 , , , 36297 2566 12 the the DT 36297 2566 13 reader reader NN 36297 2566 14 may may MD 36297 2566 15 not not RB 36297 2566 16 be be VB 36297 2566 17 acquainted acquaint VBN 36297 2566 18 with with IN 36297 2566 19 the the DT 36297 2566 20 aerial aerial JJ 36297 2566 21 eyes eye NNS 36297 2566 22 from from IN 36297 2566 23 which which WDT 36297 2566 24 concealment concealment NN 36297 2566 25 is be VBZ 36297 2566 26 very very RB 36297 2566 27 important important JJ 36297 2566 28 . . . 36297 2567 1 As as IN 36297 2567 2 one one CD 36297 2567 3 ascends ascend VBZ 36297 2567 4 in in IN 36297 2567 5 an an DT 36297 2567 6 airplane airplane NN 36297 2567 7 to to TO 36297 2567 8 view view VB 36297 2567 9 a a DT 36297 2567 10 landscape landscape NN 36297 2567 11 he -PRON- PRP 36297 2567 12 is be VBZ 36297 2567 13 impressed impressed JJ 36297 2567 14 with with IN 36297 2567 15 the the DT 36297 2567 16 inadequacy inadequacy NN 36297 2567 17 of of IN 36297 2567 18 the the DT 36297 2567 19 eyes eye NNS 36297 2567 20 to to TO 36297 2567 21 observe observe VB 36297 2567 22 the the DT 36297 2567 23 vast vast JJ 36297 2567 24 number number NN 36297 2567 25 of of IN 36297 2567 26 details detail NNS 36297 2567 27 and and CC 36297 2567 28 of of IN 36297 2567 29 the the DT 36297 2567 30 mind mind NN 36297 2567 31 to to TO 36297 2567 32 retain retain VB 36297 2567 33 them -PRON- PRP 36297 2567 34 . . . 36297 2568 1 Field field NN 36297 2568 2 glasses glass NNS 36297 2568 3 can can MD 36297 2568 4 not not RB 36297 2568 5 be be VB 36297 2568 6 used use VBN 36297 2568 7 as as RB 36297 2568 8 satisfactorily satisfactorily RB 36297 2568 9 in in IN 36297 2568 10 an an DT 36297 2568 11 airplane airplane NN 36297 2568 12 as as IN 36297 2568 13 on on IN 36297 2568 14 solid solid JJ 36297 2568 15 ground ground NN 36297 2568 16 , , , 36297 2568 17 owing owe VBG 36297 2568 18 to to IN 36297 2568 19 vibration vibration NN 36297 2568 20 and and CC 36297 2568 21 other other JJ 36297 2568 22 movements movement NNS 36297 2568 23 . . . 36297 2569 1 The the DT 36297 2569 2 difference difference NN 36297 2569 3 is be VBZ 36297 2569 4 not not RB 36297 2569 5 as as RB 36297 2569 6 great great JJ 36297 2569 7 in in IN 36297 2569 8 the the DT 36297 2569 9 huge huge JJ 36297 2569 10 flying fly VBG 36297 2569 11 boats boat NNS 36297 2569 12 as as IN 36297 2569 13 it -PRON- PRP 36297 2569 14 is be VBZ 36297 2569 15 in in IN 36297 2569 16 the the DT 36297 2569 17 ordinary ordinary JJ 36297 2569 18 airplane airplane NN 36297 2569 19 . . . 36297 2570 1 The the DT 36297 2570 2 camera camera NN 36297 2570 3 can can MD 36297 2570 4 record record VB 36297 2570 5 many many JJ 36297 2570 6 details detail NNS 36297 2570 7 with with IN 36297 2570 8 higher high JJR 36297 2570 9 accuracy accuracy NN 36297 2570 10 than than IN 36297 2570 11 the the DT 36297 2570 12 eye eye NN 36297 2570 13 . . . 36297 2571 1 At at IN 36297 2571 2 an an DT 36297 2571 3 altitude altitude NN 36297 2571 4 of of IN 36297 2571 5 one one CD 36297 2571 6 mile mile NN 36297 2571 7 the the DT 36297 2571 8 lens lens NN 36297 2571 9 can can MD 36297 2571 10 be be VB 36297 2571 11 used use VBN 36297 2571 12 at at IN 36297 2571 13 full full JJ 36297 2571 14 aperture aperture NN 36297 2571 15 and and CC 36297 2571 16 thus thus RB 36297 2571 17 very very RB 36297 2571 18 short short JJ 36297 2571 19 exposures exposure NNS 36297 2571 20 are be VBP 36297 2571 21 possible possible JJ 36297 2571 22 . . . 36297 2572 1 This this DT 36297 2572 2 tends tend VBZ 36297 2572 3 to to TO 36297 2572 4 avoid avoid VB 36297 2572 5 the the DT 36297 2572 6 difficulty difficulty NN 36297 2572 7 due due IN 36297 2572 8 to to IN 36297 2572 9 vibration vibration NN 36297 2572 10 . . . 36297 2573 1 When when WRB 36297 2573 2 the the DT 36297 2573 3 plates plate NNS 36297 2573 4 are be VBP 36297 2573 5 developed develop VBN 36297 2573 6 for for IN 36297 2573 7 detail detail NN 36297 2573 8 and and CC 36297 2573 9 enlargements enlargement NNS 36297 2573 10 are be VBP 36297 2573 11 made make VBN 36297 2573 12 , , , 36297 2573 13 many many JJ 36297 2573 14 minute minute NN 36297 2573 15 details detail NNS 36297 2573 16 are be VBP 36297 2573 17 distinguishable distinguishable JJ 36297 2573 18 . . . 36297 2574 1 Furthermore furthermore RB 36297 2574 2 , , , 36297 2574 3 owing owe VBG 36297 2574 4 to to IN 36297 2574 5 the the DT 36297 2574 6 fact fact NN 36297 2574 7 that that IN 36297 2574 8 the the DT 36297 2574 9 spectral spectral JJ 36297 2574 10 sensibilities sensibility NNS 36297 2574 11 of of IN 36297 2574 12 photographic photographic JJ 36297 2574 13 emulsions emulsion NNS 36297 2574 14 differ differ VBP 36297 2574 15 from from IN 36297 2574 16 that that DT 36297 2574 17 of of IN 36297 2574 18 the the DT 36297 2574 19 eye eye NN 36297 2574 20 , , , 36297 2574 21 contrasts contrast NNS 36297 2574 22 are be VBP 36297 2574 23 brought bring VBN 36297 2574 24 out out RP 36297 2574 25 which which WDT 36297 2574 26 the the DT 36297 2574 27 eye eye NN 36297 2574 28 would would MD 36297 2574 29 not not RB 36297 2574 30 see see VB 36297 2574 31 . . . 36297 2575 1 This this DT 36297 2575 2 applies apply VBZ 36297 2575 3 also also RB 36297 2575 4 to to TO 36297 2575 5 camouflage camouflage NN 36297 2575 6 which which WDT 36297 2575 7 is be VBZ 36297 2575 8 devised devise VBN 36297 2575 9 merely merely RB 36297 2575 10 to to TO 36297 2575 11 suit suit VB 36297 2575 12 the the DT 36297 2575 13 eye eye NN 36297 2575 14 . . . 36297 2576 1 Individual individual JJ 36297 2576 2 footprints footprint NNS 36297 2576 3 have have VBP 36297 2576 4 been be VBN 36297 2576 5 distinguished distinguish VBN 36297 2576 6 on on IN 36297 2576 7 prints print NNS 36297 2576 8 made make VBN 36297 2576 9 from from IN 36297 2576 10 negatives negative NNS 36297 2576 11 exposed expose VBN 36297 2576 12 at at IN 36297 2576 13 an an DT 36297 2576 14 altitude altitude NN 36297 2576 15 of of IN 36297 2576 16 6000 6000 CD 36297 2576 17 feet foot NNS 36297 2576 18 . . . 36297 2577 1 By by IN 36297 2577 2 means mean NNS 36297 2577 3 of of IN 36297 2577 4 photography photography NN 36297 2577 5 , , , 36297 2577 6 daily daily JJ 36297 2577 7 records record NNS 36297 2577 8 can can MD 36297 2577 9 be be VB 36297 2577 10 made make VBN 36297 2577 11 if if IN 36297 2577 12 desired desire VBN 36297 2577 13 and and CC 36297 2577 14 these these DT 36297 2577 15 can can MD 36297 2577 16 be be VB 36297 2577 17 compared compare VBN 36297 2577 18 . . . 36297 2578 1 A a DT 36297 2578 2 slight slight JJ 36297 2578 3 change change NN 36297 2578 4 is be VBZ 36297 2578 5 readily readily RB 36297 2578 6 noted note VBN 36297 2578 7 by by IN 36297 2578 8 such such JJ 36297 2578 9 comparison comparison NN 36297 2578 10 by by IN 36297 2578 11 skilled skilled JJ 36297 2578 12 interpreters interpreter NNS 36297 2578 13 of of IN 36297 2578 14 aerial aerial JJ 36297 2578 15 photographs photograph NNS 36297 2578 16 . . . 36297 2579 1 The the DT 36297 2579 2 disappearance disappearance NN 36297 2579 3 of of IN 36297 2579 4 a a DT 36297 2579 5 tree tree NN 36297 2579 6 from from IN 36297 2579 7 a a DT 36297 2579 8 clump clump NN 36297 2579 9 of of IN 36297 2579 10 trees tree NNS 36297 2579 11 may may MD 36297 2579 12 arouse arouse VB 36297 2579 13 suspicion suspicion NN 36297 2579 14 . . . 36297 2580 1 Sometimes sometimes RB 36297 2580 2 a a DT 36297 2580 3 wilted wilt VBN 36297 2580 4 tree tree NN 36297 2580 5 has have VBZ 36297 2580 6 been be VBN 36297 2580 7 noted note VBN 36297 2580 8 on on IN 36297 2580 9 a a DT 36297 2580 10 photograph photograph NN 36297 2580 11 which which WDT 36297 2580 12 naturally naturally RB 36297 2580 13 attracts attract VBZ 36297 2580 14 attention attention NN 36297 2580 15 to to IN 36297 2580 16 this this DT 36297 2580 17 position position NN 36297 2580 18 . . . 36297 2581 1 It -PRON- PRP 36297 2581 2 has have VBZ 36297 2581 3 been be VBN 36297 2581 4 said say VBN 36297 2581 5 that that IN 36297 2581 6 the the DT 36297 2581 7 belligerents belligerent NNS 36297 2581 8 resorted resort VBD 36297 2581 9 to to IN 36297 2581 10 transplanting transplant VBG 36297 2581 11 trees tree NNS 36297 2581 12 a a DT 36297 2581 13 short short JJ 36297 2581 14 distance distance NN 36297 2581 15 at at IN 36297 2581 16 a a DT 36297 2581 17 time time NN 36297 2581 18 from from IN 36297 2581 19 day day NN 36297 2581 20 to to IN 36297 2581 21 day day NN 36297 2581 22 in in IN 36297 2581 23 order order NN 36297 2581 24 to to TO 36297 2581 25 provide provide VB 36297 2581 26 clearance clearance NN 36297 2581 27 for for IN 36297 2581 28 newly newly RB 36297 2581 29 placed place VBN 36297 2581 30 guns gun NNS 36297 2581 31 . . . 36297 2582 1 By by IN 36297 2582 2 paths path NNS 36297 2582 3 converging converge VBG 36297 2582 4 toward toward IN 36297 2582 5 a a DT 36297 2582 6 certain certain JJ 36297 2582 7 point point NN 36297 2582 8 , , , 36297 2582 9 it -PRON- PRP 36297 2582 10 may may MD 36297 2582 11 be be VB 36297 2582 12 concluded conclude VBN 36297 2582 13 from from IN 36297 2582 14 the the DT 36297 2582 15 photographs photograph NNS 36297 2582 16 that that IN 36297 2582 17 an an DT 36297 2582 18 ammunition ammunition NN 36297 2582 19 dump dump NN 36297 2582 20 or or CC 36297 2582 21 headquarters headquarters NN 36297 2582 22 is be VBZ 36297 2582 23 located locate VBN 36297 2582 24 there there RB 36297 2582 25 even even RB 36297 2582 26 though though IN 36297 2582 27 the the DT 36297 2582 28 position position NN 36297 2582 29 itself -PRON- PRP 36297 2582 30 was be VBD 36297 2582 31 well well RB 36297 2582 32 camouflaged camouflage VBN 36297 2582 33 . . . 36297 2583 1 Continuous continuous JJ 36297 2583 2 photographic photographic JJ 36297 2583 3 records record NNS 36297 2583 4 may may MD 36297 2583 5 reveal reveal VB 36297 2583 6 disturbances disturbance NNS 36297 2583 7 of of IN 36297 2583 8 turf turf NN 36297 2583 9 and and CC 36297 2583 10 lead lead VBP 36297 2583 11 to to IN 36297 2583 12 a a DT 36297 2583 13 more more RBR 36297 2583 14 careful careful JJ 36297 2583 15 inspection inspection NN 36297 2583 16 of of IN 36297 2583 17 the the DT 36297 2583 18 region region NN 36297 2583 19 for for IN 36297 2583 20 sapping sap VBG 36297 2583 21 operations operation NNS 36297 2583 22 , , , 36297 2583 23 etc etc FW 36297 2583 24 . . . 36297 2584 1 By by IN 36297 2584 2 these these DT 36297 2584 3 few few JJ 36297 2584 4 details detail NNS 36297 2584 5 it -PRON- PRP 36297 2584 6 is be VBZ 36297 2584 7 obvious obvious JJ 36297 2584 8 that that IN 36297 2584 9 the the DT 36297 2584 10 airplane airplane NN 36297 2584 11 is be VBZ 36297 2584 12 responsible responsible JJ 36297 2584 13 for for IN 36297 2584 14 much much JJ 36297 2584 15 of of IN 36297 2584 16 the the DT 36297 2584 17 development development NN 36297 2584 18 of of IN 36297 2584 19 camouflage camouflage NN 36297 2584 20 on on IN 36297 2584 21 land land NN 36297 2584 22 , , , 36297 2584 23 owing owe VBG 36297 2584 24 to to IN 36297 2584 25 the the DT 36297 2584 26 necessity necessity NN 36297 2584 27 which which WDT 36297 2584 28 it -PRON- PRP 36297 2584 29 created create VBD 36297 2584 30 for for IN 36297 2584 31 a a DT 36297 2584 32 much much RB 36297 2584 33 more more RBR 36297 2584 34 extensive extensive JJ 36297 2584 35 concealment concealment NN 36297 2584 36 . . . 36297 2585 1 The the DT 36297 2585 2 entire entire JJ 36297 2585 3 story story NN 36297 2585 4 of of IN 36297 2585 5 land land NN 36297 2585 6 camouflage camouflage NN 36297 2585 7 would would MD 36297 2585 8 overflow overflow VB 36297 2585 9 the the DT 36297 2585 10 confines confine NNS 36297 2585 11 of of IN 36297 2585 12 a a DT 36297 2585 13 volume volume NN 36297 2585 14 , , , 36297 2585 15 but but CC 36297 2585 16 it -PRON- PRP 36297 2585 17 is be VBZ 36297 2585 18 hoped hope VBN 36297 2585 19 that that IN 36297 2585 20 the the DT 36297 2585 21 foregoing foregoing NN 36297 2585 22 will will MD 36297 2585 23 aid aid VB 36297 2585 24 the the DT 36297 2585 25 reader reader NN 36297 2585 26 in in IN 36297 2585 27 visualizing visualize VBG 36297 2585 28 the the DT 36297 2585 29 magnitude magnitude NN 36297 2585 30 of of IN 36297 2585 31 the the DT 36297 2585 32 art art NN 36297 2585 33 and and CC 36297 2585 34 the the DT 36297 2585 35 scientific scientific JJ 36297 2585 36 basis basis NN 36297 2585 37 upon upon IN 36297 2585 38 which which WDT 36297 2585 39 terrestial terrestial JJ 36297 2585 40 camouflage camouflage NN 36297 2585 41 is be VBZ 36297 2585 42 founded found VBN 36297 2585 43 . . . 36297 2586 1 _ _ NNP 36297 2586 2 Marine Marine NNP 36297 2586 3 Camouflage._--At camouflage._--at NN 36297 2586 4 the the DT 36297 2586 5 time time NN 36297 2586 6 of of IN 36297 2586 7 the the DT 36297 2586 8 Spanish spanish JJ 36297 2586 9 - - HYPH 36297 2586 10 American american JJ 36297 2586 11 war war NN 36297 2586 12 , , , 36297 2586 13 our -PRON- PRP$ 36297 2586 14 battleships battleship NNS 36297 2586 15 were be VBD 36297 2586 16 painted paint VBN 36297 2586 17 white white JJ 36297 2586 18 , , , 36297 2586 19 apparently apparently RB 36297 2586 20 with with IN 36297 2586 21 little little JJ 36297 2586 22 thought thought NN 36297 2586 23 of of IN 36297 2586 24 attaining attain VBG 36297 2586 25 low low JJ 36297 2586 26 visibility visibility NN 36297 2586 27 . . . 36297 2587 1 Later later RB 36297 2587 2 the the DT 36297 2587 3 so so RB 36297 2587 4 - - HYPH 36297 2587 5 called call VBN 36297 2587 6 " " `` 36297 2587 7 battleship battleship NN 36297 2587 8 gray gray NN 36297 2587 9 " " '' 36297 2587 10 was be VBD 36297 2587 11 adopted adopt VBN 36297 2587 12 , , , 36297 2587 13 but but CC 36297 2587 14 it -PRON- PRP 36297 2587 15 has have VBZ 36297 2587 16 been be VBN 36297 2587 17 apparent apparent JJ 36297 2587 18 to to IN 36297 2587 19 close close VB 36297 2587 20 observers observer NNS 36297 2587 21 that that WDT 36297 2587 22 this this DT 36297 2587 23 gray gray NN 36297 2587 24 is be VBZ 36297 2587 25 in in IN 36297 2587 26 general general JJ 36297 2587 27 too too RB 36297 2587 28 dark dark JJ 36297 2587 29 . . . 36297 2588 1 Apparently apparently RB 36297 2588 2 it -PRON- PRP 36297 2588 3 is be VBZ 36297 2588 4 a a DT 36297 2588 5 mixture mixture NN 36297 2588 6 of of IN 36297 2588 7 black black JJ 36297 2588 8 and and CC 36297 2588 9 white white JJ 36297 2588 10 . . . 36297 2589 1 The the DT 36297 2589 2 ships ship NNS 36297 2589 3 of of IN 36297 2589 4 the the DT 36297 2589 5 British british JJ 36297 2589 6 navy navy NNP 36297 2589 7 were be VBD 36297 2589 8 at at IN 36297 2589 9 one one CD 36297 2589 10 time time NN 36297 2589 11 painted paint VBN 36297 2589 12 black black JJ 36297 2589 13 , , , 36297 2589 14 but but CC 36297 2589 15 preceding precede VBG 36297 2589 16 the the DT 36297 2589 17 Great Great NNP 36297 2589 18 War War NNP 36297 2589 19 their -PRON- PRP$ 36297 2589 20 coats coat NNS 36297 2589 21 were be VBD 36297 2589 22 of of IN 36297 2589 23 a a DT 36297 2589 24 warm warm JJ 36297 2589 25 dark dark JJ 36297 2589 26 gray gray NN 36297 2589 27 . . . 36297 2590 1 Germany Germany NNP 36297 2590 2 adopted adopt VBD 36297 2590 3 dark dark JJ 36297 2590 4 gray gray NN 36297 2590 5 before before IN 36297 2590 6 the the DT 36297 2590 7 close close NN 36297 2590 8 of of IN 36297 2590 9 the the DT 36297 2590 10 last last JJ 36297 2590 11 century century NN 36297 2590 12 and and CC 36297 2590 13 Austria Austria NNP 36297 2590 14 adopted adopt VBD 36297 2590 15 the the DT 36297 2590 16 German german JJ 36297 2590 17 gray gray NN 36297 2590 18 at at IN 36297 2590 19 the the DT 36297 2590 20 outbreak outbreak NN 36297 2590 21 of of IN 36297 2590 22 the the DT 36297 2590 23 war war NN 36297 2590 24 . . . 36297 2591 1 The the DT 36297 2591 2 French french JJ 36297 2591 3 and and CC 36297 2591 4 Italian italian JJ 36297 2591 5 fleets fleet NNS 36297 2591 6 were be VBD 36297 2591 7 also also RB 36297 2591 8 painted paint VBN 36297 2591 9 a a DT 36297 2591 10 warm warm JJ 36297 2591 11 gray gray NN 36297 2591 12 . . . 36297 2592 1 This this DT 36297 2592 2 development development NN 36297 2592 3 toward toward IN 36297 2592 4 gray gray NNP 36297 2592 5 was be VBD 36297 2592 6 the the DT 36297 2592 7 result result NN 36297 2592 8 of of IN 36297 2592 9 an an DT 36297 2592 10 aim aim NN 36297 2592 11 toward toward IN 36297 2592 12 attaining attain VBG 36297 2592 13 low low JJ 36297 2592 14 visibility visibility NN 36297 2592 15 . . . 36297 2593 1 Other other JJ 36297 2593 2 changes change NNS 36297 2593 3 were be VBD 36297 2593 4 necessitated necessitate VBN 36297 2593 5 by by IN 36297 2593 6 submarine submarine NN 36297 2593 7 warfare warfare NN 36297 2593 8 which which WDT 36297 2593 9 will will MD 36297 2593 10 be be VB 36297 2593 11 discussed discuss VBN 36297 2593 12 later later RB 36297 2593 13 . . . 36297 2594 1 In in IN 36297 2594 2 the the DT 36297 2594 3 early early JJ 36297 2594 4 days day NNS 36297 2594 5 of of IN 36297 2594 6 unrestricted unrestricted JJ 36297 2594 7 submarine submarine NN 36297 2594 8 warfare warfare NN 36297 2594 9 many many JJ 36297 2594 10 schemes scheme NNS 36297 2594 11 for for IN 36297 2594 12 modifying modify VBG 36297 2594 13 the the DT 36297 2594 14 appearance appearance NN 36297 2594 15 of of IN 36297 2594 16 vessels vessel NNS 36297 2594 17 were be VBD 36297 2594 18 submitted submit VBN 36297 2594 19 . . . 36297 2595 1 Many many JJ 36297 2595 2 of of IN 36297 2595 3 these these DT 36297 2595 4 were be VBD 36297 2595 5 merely merely RB 36297 2595 6 wild wild JJ 36297 2595 7 fancies fancy NNS 36297 2595 8 with with IN 36297 2595 9 no no DT 36297 2595 10 established establish VBN 36297 2595 11 reasoning reason VBG 36297 2595 12 behind behind IN 36297 2595 13 them -PRON- PRP 36297 2595 14 . . . 36297 2596 1 Here here RB 36297 2596 2 again again RB 36297 2596 3 science science NN 36297 2596 4 came come VBD 36297 2596 5 to to IN 36297 2596 6 the the DT 36297 2596 7 rescue rescue NN 36297 2596 8 and and CC 36297 2596 9 through through IN 36297 2596 10 research research NN 36297 2596 11 and and CC 36297 2596 12 consultation consultation NN 36297 2596 13 , , , 36297 2596 14 finally finally RB 36297 2596 15 straightened straighten VBD 36297 2596 16 out out RP 36297 2596 17 matters matter NNS 36297 2596 18 . . . 36297 2597 1 The the DT 36297 2597 2 question question NN 36297 2597 3 of of IN 36297 2597 4 low low JJ 36297 2597 5 visibility visibility NN 36297 2597 6 for for IN 36297 2597 7 vessels vessel NNS 36297 2597 8 could could MD 36297 2597 9 be be VB 36297 2597 10 thoroughly thoroughly RB 36297 2597 11 studied study VBN 36297 2597 12 on on IN 36297 2597 13 a a DT 36297 2597 14 laboratory laboratory NN 36297 2597 15 scale scale NN 36297 2597 16 , , , 36297 2597 17 because because IN 36297 2597 18 the the DT 36297 2597 19 seascape seascape NN 36297 2597 20 and and CC 36297 2597 21 natural natural JJ 36297 2597 22 lighting lighting NN 36297 2597 23 conditions condition NNS 36297 2597 24 could could MD 36297 2597 25 be be VB 36297 2597 26 reproduced reproduce VBN 36297 2597 27 very very RB 36297 2597 28 closely closely RB 36297 2597 29 . . . 36297 2598 1 Even even RB 36297 2598 2 the the DT 36297 2598 3 general general JJ 36297 2598 4 weather weather NN 36297 2598 5 conditions condition NNS 36297 2598 6 could could MD 36297 2598 7 be be VB 36297 2598 8 simulated simulate VBN 36297 2598 9 , , , 36297 2598 10 although although IN 36297 2598 11 , , , 36297 2598 12 of of IN 36297 2598 13 course course NN 36297 2598 14 , , , 36297 2598 15 the the DT 36297 2598 16 experiments experiment NNS 36297 2598 17 could could MD 36297 2598 18 be be VB 36297 2598 19 prosecuted prosecute VBN 36297 2598 20 outdoors outdoors RB 36297 2598 21 with with IN 36297 2598 22 small small JJ 36297 2598 23 models model NNS 36297 2598 24 , , , 36297 2598 25 as as RB 36297 2598 26 indeed indeed RB 36297 2598 27 they -PRON- PRP 36297 2598 28 were be VBD 36297 2598 29 . . . 36297 2599 1 Mr. Mr. NNP 36297 2599 2 L. L. NNP 36297 2599 3 A. a. NN 36297 2599 4 Jones[10 Jones[10 NNP 36297 2599 5 ] ] -RRB- 36297 2599 6 carried carry VBN 36297 2599 7 out out RP 36297 2599 8 an an DT 36297 2599 9 investigation investigation NN 36297 2599 10 on on IN 36297 2599 11 the the DT 36297 2599 12 shore shore NN 36297 2599 13 of of IN 36297 2599 14 Lake Lake NNP 36297 2599 15 Ontario Ontario NNP 36297 2599 16 , , , 36297 2599 17 and and CC 36297 2599 18 laboratory laboratory NN 36297 2599 19 experiments experiment NNS 36297 2599 20 were be VBD 36297 2599 21 conducted conduct VBN 36297 2599 22 by by IN 36297 2599 23 others other NNS 36297 2599 24 with with IN 36297 2599 25 the the DT 36297 2599 26 result result NN 36297 2599 27 that that IN 36297 2599 28 much much JJ 36297 2599 29 light light NN 36297 2599 30 was be VBD 36297 2599 31 shed shed VBN 36297 2599 32 on on IN 36297 2599 33 the the DT 36297 2599 34 questions question NNS 36297 2599 35 of of IN 36297 2599 36 marine marine JJ 36297 2599 37 camouflage camouflage NN 36297 2599 38 . . . 36297 2600 1 This this DT 36297 2600 2 work work NN 36297 2600 3 confirmed confirm VBD 36297 2600 4 the the DT 36297 2600 5 conclusion conclusion NN 36297 2600 6 of of IN 36297 2600 7 the the DT 36297 2600 8 author author NN 36297 2600 9 and and CC 36297 2600 10 others other NNS 36297 2600 11 that that WDT 36297 2600 12 our -PRON- PRP$ 36297 2600 13 battleship battleship NN 36297 2600 14 gray gray NN 36297 2600 15 was be VBD 36297 2600 16 too too RB 36297 2600 17 dark dark JJ 36297 2600 18 . . . 36297 2601 1 Of of RB 36297 2601 2 course course RB 36297 2601 3 , , , 36297 2601 4 the the DT 36297 2601 5 color color NN 36297 2601 6 best best RB 36297 2601 7 adapted adapt VBN 36297 2601 8 is be VBZ 36297 2601 9 that that IN 36297 2601 10 which which WDT 36297 2601 11 is be VBZ 36297 2601 12 the the DT 36297 2601 13 best good JJS 36297 2601 14 compromise compromise NN 36297 2601 15 for for IN 36297 2601 16 the the DT 36297 2601 17 extreme extreme JJ 36297 2601 18 variety variety NN 36297 2601 19 in in IN 36297 2601 20 lighting lighting NN 36297 2601 21 and and CC 36297 2601 22 weather weather NN 36297 2601 23 conditions condition NNS 36297 2601 24 . . . 36297 2602 1 These these DT 36297 2602 2 vary vary VBP 36297 2602 3 in in IN 36297 2602 4 different different JJ 36297 2602 5 parts part NNS 36297 2602 6 of of IN 36297 2602 7 the the DT 36297 2602 8 world world NN 36297 2602 9 , , , 36297 2602 10 so so CC 36297 2602 11 naturally naturally RB 36297 2602 12 those those DT 36297 2602 13 in in IN 36297 2602 14 the the DT 36297 2602 15 war war NN 36297 2602 16 zone zone NN 36297 2602 17 were be VBD 36297 2602 18 of of IN 36297 2602 19 primary primary JJ 36297 2602 20 importance importance NN 36297 2602 21 . . . 36297 2603 1 All all DT 36297 2603 2 camouflage camouflage NN 36297 2603 3 generally generally RB 36297 2603 4 must must MD 36297 2603 5 aim aim VB 36297 2603 6 to to TO 36297 2603 7 be be VB 36297 2603 8 a a DT 36297 2603 9 compromise compromise NN 36297 2603 10 best best RB 36297 2603 11 suited suit VBN 36297 2603 12 for for IN 36297 2603 13 average average JJ 36297 2603 14 or or CC 36297 2603 15 dominating dominating JJ 36297 2603 16 conditions condition NNS 36297 2603 17 . . . 36297 2604 1 For for IN 36297 2604 2 example example NN 36297 2604 3 , , , 36297 2604 4 in in IN 36297 2604 5 foggy foggy JJ 36297 2604 6 weather weather NN 36297 2604 7 a a DT 36297 2604 8 certain certain JJ 36297 2604 9 paint paint NN 36297 2604 10 may may MD 36297 2604 11 render render VB 36297 2604 12 a a DT 36297 2604 13 ship ship NN 36297 2604 14 of of IN 36297 2604 15 low low JJ 36297 2604 16 visibility visibility NN 36297 2604 17 , , , 36297 2604 18 but but CC 36297 2604 19 on on IN 36297 2604 20 a a DT 36297 2604 21 sunny sunny JJ 36297 2604 22 day day NN 36297 2604 23 the the DT 36297 2604 24 ship ship NN 36297 2604 25 might may MD 36297 2604 26 be be VB 36297 2604 27 plainly plainly RB 36297 2604 28 visible visible JJ 36297 2604 29 . . . 36297 2605 1 However however RB 36297 2605 2 , , , 36297 2605 3 if if IN 36297 2605 4 ships ship NNS 36297 2605 5 are be VBP 36297 2605 6 rendered render VBN 36297 2605 7 of of IN 36297 2605 8 low low JJ 36297 2605 9 visibility visibility NN 36297 2605 10 for for IN 36297 2605 11 even even RB 36297 2605 12 a a DT 36297 2605 13 portion portion NN 36297 2605 14 of of IN 36297 2605 15 the the DT 36297 2605 16 time time NN 36297 2605 17 it -PRON- PRP 36297 2605 18 is be VBZ 36297 2605 19 obvious obvious JJ 36297 2605 20 that that IN 36297 2605 21 an an DT 36297 2605 22 advantage advantage NN 36297 2605 23 has have VBZ 36297 2605 24 been be VBN 36297 2605 25 gained gain VBN 36297 2605 26 . . . 36297 2606 1 Cloudiness cloudiness JJ 36297 2606 2 increases increase NNS 36297 2606 3 generally generally RB 36297 2606 4 from from IN 36297 2606 5 the the DT 36297 2606 6 equator equator NN 36297 2606 7 northward northward RB 36297 2606 8 , , , 36297 2606 9 as as IN 36297 2606 10 indicated indicate VBN 36297 2606 11 by by IN 36297 2606 12 meteorological meteorological JJ 36297 2606 13 annals annal NNS 36297 2606 14 . . . 36297 2607 1 In in IN 36297 2607 2 order order NN 36297 2607 3 to to TO 36297 2607 4 study study VB 36297 2607 5 low low JJ 36297 2607 6 visibility visibility NN 36297 2607 7 a a DT 36297 2607 8 scale scale NN 36297 2607 9 of of IN 36297 2607 10 visibility visibility NN 36297 2607 11 must must MD 36297 2607 12 be be VB 36297 2607 13 established establish VBN 36297 2607 14 , , , 36297 2607 15 and and CC 36297 2607 16 it -PRON- PRP 36297 2607 17 is be VBZ 36297 2607 18 essential essential JJ 36297 2607 19 to to TO 36297 2607 20 begin begin VB 36297 2607 21 with with IN 36297 2607 22 the the DT 36297 2607 23 fundamentals fundamental NNS 36297 2607 24 of of IN 36297 2607 25 vision vision NN 36297 2607 26 . . . 36297 2608 1 We -PRON- PRP 36297 2608 2 distinguish distinguish VBP 36297 2608 3 objects object NNS 36297 2608 4 by by IN 36297 2608 5 contrasts contrast NNS 36297 2608 6 in in IN 36297 2608 7 brightness brightness NN 36297 2608 8 and and CC 36297 2608 9 in in IN 36297 2608 10 color color NN 36297 2608 11 and and CC 36297 2608 12 we -PRON- PRP 36297 2608 13 recognize recognize VBP 36297 2608 14 objects object NNS 36297 2608 15 by by IN 36297 2608 16 these these DT 36297 2608 17 contrasts contrast NNS 36297 2608 18 which which WDT 36297 2608 19 mold mold VBP 36297 2608 20 their -PRON- PRP$ 36297 2608 21 forms form NNS 36297 2608 22 . . . 36297 2609 1 In in IN 36297 2609 2 researches research NNS 36297 2609 3 in in IN 36297 2609 4 vision vision NN 36297 2609 5 it -PRON- PRP 36297 2609 6 is be VBZ 36297 2609 7 customary customary JJ 36297 2609 8 to to TO 36297 2609 9 devise devise VB 36297 2609 10 methods method NNS 36297 2609 11 by by IN 36297 2609 12 which which WDT 36297 2609 13 these these DT 36297 2609 14 contrasts contrast NNS 36297 2609 15 can can MD 36297 2609 16 be be VB 36297 2609 17 varied varied JJ 36297 2609 18 . . . 36297 2610 1 This this DT 36297 2610 2 is be VBZ 36297 2610 3 done do VBN 36297 2610 4 by by IN 36297 2610 5 increasing increase VBG 36297 2610 6 or or CC 36297 2610 7 decreasing decrease VBG 36297 2610 8 a a DT 36297 2610 9 veil veil NN 36297 2610 10 of of IN 36297 2610 11 luminosity luminosity NN 36297 2610 12 over over IN 36297 2610 13 the the DT 36297 2610 14 object object NN 36297 2610 15 and and CC 36297 2610 16 its -PRON- PRP$ 36297 2610 17 surroundings surrounding NNS 36297 2610 18 and and CC 36297 2610 19 by by IN 36297 2610 20 other other JJ 36297 2610 21 means mean NNS 36297 2610 22 . . . 36297 2611 1 Much much JJ 36297 2611 2 work work NN 36297 2611 3 has have VBZ 36297 2611 4 been be VBN 36297 2611 5 done do VBN 36297 2611 6 in in IN 36297 2611 7 past past JJ 36297 2611 8 years year NNS 36297 2611 9 in in IN 36297 2611 10 studying study VBG 36297 2611 11 the the DT 36297 2611 12 minimum minimum JJ 36297 2611 13 perceptible perceptible JJ 36297 2611 14 contrast contrast NN 36297 2611 15 , , , 36297 2611 16 and and CC 36297 2611 17 it -PRON- PRP 36297 2611 18 has have VBZ 36297 2611 19 been be VBN 36297 2611 20 found find VBN 36297 2611 21 to to TO 36297 2611 22 vary vary VB 36297 2611 23 with with IN 36297 2611 24 hue hue NNP 36297 2611 25 , , , 36297 2611 26 with with IN 36297 2611 27 the the DT 36297 2611 28 magnitude magnitude NN 36297 2611 29 of of IN 36297 2611 30 brightness brightness NN 36297 2611 31 , , , 36297 2611 32 and and CC 36297 2611 33 with with IN 36297 2611 34 the the DT 36297 2611 35 size size NN 36297 2611 36 of of IN 36297 2611 37 the the DT 36297 2611 38 image image NN 36297 2611 39 , , , 36297 2611 40 that that RB 36297 2611 41 is is RB 36297 2611 42 , , , 36297 2611 43 with with IN 36297 2611 44 the the DT 36297 2611 45 distance distance NN 36297 2611 46 of of IN 36297 2611 47 an an DT 36297 2611 48 object object NN 36297 2611 49 of of IN 36297 2611 50 given give VBN 36297 2611 51 size size NN 36297 2611 52 . . . 36297 2612 1 In in IN 36297 2612 2 such such JJ 36297 2612 3 problems problem NNS 36297 2612 4 as as IN 36297 2612 5 this this DT 36297 2612 6 one one CD 36297 2612 7 much much JJ 36297 2612 8 scientific scientific JJ 36297 2612 9 work work NN 36297 2612 10 can can MD 36297 2612 11 be be VB 36297 2612 12 drawn draw VBN 36297 2612 13 upon upon IN 36297 2612 14 . . . 36297 2613 1 A a DT 36297 2613 2 simple simple JJ 36297 2613 3 , , , 36297 2613 4 though though IN 36297 2613 5 rough rough JJ 36297 2613 6 , , , 36297 2613 7 scale scale NN 36297 2613 8 of of IN 36297 2613 9 visibility visibility NN 36297 2613 10 may may MD 36297 2613 11 be be VB 36297 2613 12 made make VBN 36297 2613 13 by by IN 36297 2613 14 using use VBG 36297 2613 15 a a DT 36297 2613 16 series series NN 36297 2613 17 of of IN 36297 2613 18 photographic photographic JJ 36297 2613 19 screens screen NNS 36297 2613 20 of of IN 36297 2613 21 different different JJ 36297 2613 22 densities density NNS 36297 2613 23 . . . 36297 2614 1 A a DT 36297 2614 2 photographic photographic JJ 36297 2614 3 screen screen NN 36297 2614 4 is be VBZ 36297 2614 5 slightly slightly RB 36297 2614 6 diffusing diffusing JJ 36297 2614 7 , , , 36297 2614 8 still still RB 36297 2614 9 the the DT 36297 2614 10 object object NN 36297 2614 11 can can MD 36297 2614 12 be be VB 36297 2614 13 viewed view VBN 36297 2614 14 through through IN 36297 2614 15 it -PRON- PRP 36297 2614 16 very very RB 36297 2614 17 well well RB 36297 2614 18 . . . 36297 2615 1 Such such JJ 36297 2615 2 methods method NNS 36297 2615 3 have have VBP 36297 2615 4 been be VBN 36297 2615 5 employed employ VBN 36297 2615 6 by by IN 36297 2615 7 various various JJ 36297 2615 8 investigators investigator NNS 36297 2615 9 in in IN 36297 2615 10 the the DT 36297 2615 11 study study NN 36297 2615 12 of of IN 36297 2615 13 visibility visibility NN 36297 2615 14 . . . 36297 2616 1 Owing owe VBG 36297 2616 2 to to IN 36297 2616 3 the the DT 36297 2616 4 curvature curvature NN 36297 2616 5 of of IN 36297 2616 6 the the DT 36297 2616 7 earth earth NN 36297 2616 8 , , , 36297 2616 9 the the DT 36297 2616 10 distance distance NN 36297 2616 11 at at IN 36297 2616 12 which which WDT 36297 2616 13 a a DT 36297 2616 14 vessel vessel NN 36297 2616 15 can can MD 36297 2616 16 be be VB 36297 2616 17 seen see VBN 36297 2616 18 on on IN 36297 2616 19 a a DT 36297 2616 20 clear clear JJ 36297 2616 21 day day NN 36297 2616 22 is be VBZ 36297 2616 23 limited limit VBN 36297 2616 24 by by IN 36297 2616 25 the the DT 36297 2616 26 height height NN 36297 2616 27 of of IN 36297 2616 28 the the DT 36297 2616 29 observer observer NN 36297 2616 30 and and CC 36297 2616 31 of of IN 36297 2616 32 the the DT 36297 2616 33 ship ship NN 36297 2616 34 's 's POS 36297 2616 35 superstructure superstructure NN 36297 2616 36 . . . 36297 2617 1 For for IN 36297 2617 2 an an DT 36297 2617 3 observer observer NN 36297 2617 4 in in IN 36297 2617 5 a a DT 36297 2617 6 certain certain JJ 36297 2617 7 position position NN 36297 2617 8 the the DT 36297 2617 9 visibility visibility NN 36297 2617 10 range range NN 36297 2617 11 varies varie NNS 36297 2617 12 as as IN 36297 2617 13 the the DT 36297 2617 14 square square JJ 36297 2617 15 root root NN 36297 2617 16 of of IN 36297 2617 17 the the DT 36297 2617 18 distance distance NN 36297 2617 19 of of IN 36297 2617 20 the the DT 36297 2617 21 object object NN 36297 2617 22 from from IN 36297 2617 23 him -PRON- PRP 36297 2617 24 . . . 36297 2618 1 Such such JJ 36297 2618 2 data datum NNS 36297 2618 3 are be VBP 36297 2618 4 easily easily RB 36297 2618 5 available available JJ 36297 2618 6 , , , 36297 2618 7 so so CC 36297 2618 8 they -PRON- PRP 36297 2618 9 will will MD 36297 2618 10 not not RB 36297 2618 11 be be VB 36297 2618 12 given give VBN 36297 2618 13 here here RB 36297 2618 14 . . . 36297 2619 1 So so RB 36297 2619 2 far far RB 36297 2619 3 we -PRON- PRP 36297 2619 4 have have VBP 36297 2619 5 considered consider VBN 36297 2619 6 the the DT 36297 2619 7 ship ship NN 36297 2619 8 itself -PRON- PRP 36297 2619 9 when when WRB 36297 2619 10 , , , 36297 2619 11 as as IN 36297 2619 12 a a DT 36297 2619 13 matter matter NN 36297 2619 14 of of IN 36297 2619 15 fact fact NN 36297 2619 16 , , , 36297 2619 17 on on IN 36297 2619 18 clear clear JJ 36297 2619 19 days day NNS 36297 2619 20 the the DT 36297 2619 21 smoke smoke NN 36297 2619 22 cloud cloud NN 36297 2619 23 emitted emit VBN 36297 2619 24 by by IN 36297 2619 25 the the DT 36297 2619 26 ship ship NN 36297 2619 27 is be VBZ 36297 2619 28 usually usually RB 36297 2619 29 visible visible JJ 36297 2619 30 long long RB 36297 2619 31 before before IN 36297 2619 32 a a DT 36297 2619 33 ship ship NN 36297 2619 34 's 's POS 36297 2619 35 superstructure superstructure NN 36297 2619 36 appears appear VBZ 36297 2619 37 on on IN 36297 2619 38 the the DT 36297 2619 39 horizon horizon NN 36297 2619 40 . . . 36297 2620 1 This this DT 36297 2620 2 led lead VBD 36297 2620 3 to to IN 36297 2620 4 the the DT 36297 2620 5 prevention prevention NN 36297 2620 6 of of IN 36297 2620 7 smoke smoke NN 36297 2620 8 by by IN 36297 2620 9 better well JJR 36297 2620 10 combustion combustion NN 36297 2620 11 , , , 36297 2620 12 by by IN 36297 2620 13 using use VBG 36297 2620 14 smokeless smokeless NN 36297 2620 15 fuels fuel NNS 36297 2620 16 , , , 36297 2620 17 etc etc FW 36297 2620 18 . . . 36297 2621 1 The the DT 36297 2621 2 irregular irregular JJ 36297 2621 3 skyline skyline NN 36297 2621 4 of of IN 36297 2621 5 a a DT 36297 2621 6 ship ship NN 36297 2621 7 is be VBZ 36297 2621 8 perhaps perhaps RB 36297 2621 9 one one CD 36297 2621 10 of of IN 36297 2621 11 the the DT 36297 2621 12 most most RBS 36297 2621 13 influential influential JJ 36297 2621 14 factors factor NNS 36297 2621 15 which which WDT 36297 2621 16 tend tend VBP 36297 2621 17 to to TO 36297 2621 18 increase increase VB 36297 2621 19 its -PRON- PRP$ 36297 2621 20 visibility visibility NN 36297 2621 21 . . . 36297 2622 1 Many many JJ 36297 2622 2 suggestions suggestion NNS 36297 2622 3 pertaining pertain VBG 36297 2622 4 to to IN 36297 2622 5 the the DT 36297 2622 6 modification modification NN 36297 2622 7 of of IN 36297 2622 8 the the DT 36297 2622 9 superstructure superstructure NN 36297 2622 10 have have VBP 36297 2622 11 been be VBN 36297 2622 12 made make VBN 36297 2622 13 , , , 36297 2622 14 but but CC 36297 2622 15 these these DT 36297 2622 16 are be VBP 36297 2622 17 generally generally RB 36297 2622 18 impracticable impracticable JJ 36297 2622 19 . . . 36297 2623 1 False false JJ 36297 2623 2 work work NN 36297 2623 3 suffers suffer VBZ 36297 2623 4 in in IN 36297 2623 5 heavy heavy JJ 36297 2623 6 seas sea NNS 36297 2623 7 and and CC 36297 2623 8 high high JJ 36297 2623 9 winds wind NNS 36297 2623 10 . . . 36297 2624 1 After after IN 36297 2624 2 adopting adopt VBG 36297 2624 3 a a DT 36297 2624 4 suitable suitable JJ 36297 2624 5 gray gray NN 36297 2624 6 as as IN 36297 2624 7 , , , 36297 2624 8 a a DT 36297 2624 9 " " `` 36297 2624 10 low low JJ 36297 2624 11 - - HYPH 36297 2624 12 visibility visibility NN 36297 2624 13 " " '' 36297 2624 14 paint paint NN 36297 2624 15 for for IN 36297 2624 16 ships ship NNS 36297 2624 17 , , , 36297 2624 18 perhaps perhaps RB 36297 2624 19 the the DT 36297 2624 20 next next JJ 36297 2624 21 refinement refinement NN 36297 2624 22 was be VBD 36297 2624 23 counter counter RB 36297 2624 24 shading shade VBG 36297 2624 25 ; ; : 36297 2624 26 that that RB 36297 2624 27 is is RB 36297 2624 28 , , , 36297 2624 29 shadows shadow NNS 36297 2624 30 were be VBD 36297 2624 31 painted paint VBN 36297 2624 32 a a DT 36297 2624 33 lighter light JJR 36297 2624 34 color color NN 36297 2624 35 , , , 36297 2624 36 or or CC 36297 2624 37 even even RB 36297 2624 38 white white JJ 36297 2624 39 . . . 36297 2625 1 The the DT 36297 2625 2 superstructure superstructure NN 36297 2625 3 was be VBD 36297 2625 4 painted paint VBN 36297 2625 5 in in IN 36297 2625 6 some some DT 36297 2625 7 cases case NNS 36297 2625 8 a a DT 36297 2625 9 light light JJ 36297 2625 10 blue blue NN 36297 2625 11 , , , 36297 2625 12 with with IN 36297 2625 13 the the DT 36297 2625 14 hope hope NN 36297 2625 15 that that IN 36297 2625 16 it -PRON- PRP 36297 2625 17 would would MD 36297 2625 18 fade fade VB 36297 2625 19 into into IN 36297 2625 20 the the DT 36297 2625 21 distant distant JJ 36297 2625 22 horizon horizon NN 36297 2625 23 . . . 36297 2626 1 However however RB 36297 2626 2 , , , 36297 2626 3 the the DT 36297 2626 4 effectiveness effectiveness NN 36297 2626 5 of of IN 36297 2626 6 the the DT 36297 2626 7 submarine submarine NN 36297 2626 8 demanded demand VBD 36297 2626 9 new new JJ 36297 2626 10 expedients expedient NNS 36297 2626 11 because because IN 36297 2626 12 within within IN 36297 2626 13 its -PRON- PRP$ 36297 2626 14 range range NN 36297 2626 15 of of IN 36297 2626 16 effectiveness effectiveness NN 36297 2626 17 no no DT 36297 2626 18 ingenuity ingenuity NN 36297 2626 19 could could MD 36297 2626 20 render render VB 36297 2626 21 its -PRON- PRP$ 36297 2626 22 intended intend VBN 36297 2626 23 prey prey NN 36297 2626 24 invisible invisible JJ 36297 2626 25 . . . 36297 2627 1 The the DT 36297 2627 2 effective effective JJ 36297 2627 3 gun gun NN 36297 2627 4 - - HYPH 36297 2627 5 fire fire NN 36297 2627 6 from from IN 36297 2627 7 submarines submarine NNS 36297 2627 8 is be VBZ 36297 2627 9 several several JJ 36297 2627 10 miles mile NNS 36297 2627 11 and and CC 36297 2627 12 torpedoes torpedo NNS 36297 2627 13 can can MD 36297 2627 14 be be VB 36297 2627 15 effective effective JJ 36297 2627 16 at at IN 36297 2627 17 these these DT 36297 2627 18 distances distance NNS 36297 2627 19 . . . 36297 2628 1 However however RB 36297 2628 2 , , , 36297 2628 3 the the DT 36297 2628 4 submarine submarine NN 36297 2628 5 prefers prefer VBZ 36297 2628 6 to to TO 36297 2628 7 discharge discharge VB 36297 2628 8 the the DT 36297 2628 9 torpedo torpedo NN 36297 2628 10 at at IN 36297 2628 11 ranges range NNS 36297 2628 12 within within IN 36297 2628 13 a a DT 36297 2628 14 mile mile NN 36297 2628 15 . . . 36297 2629 1 It -PRON- PRP 36297 2629 2 is be VBZ 36297 2629 3 obvious obvious JJ 36297 2629 4 that that IN 36297 2629 5 , , , 36297 2629 6 in in IN 36297 2629 7 average average JJ 36297 2629 8 weather weather NN 36297 2629 9 , , , 36297 2629 10 low low JJ 36297 2629 11 visibility visibility NN 36297 2629 12 ceases cease VBZ 36297 2629 13 to to TO 36297 2629 14 be be VB 36297 2629 15 very very RB 36297 2629 16 effective effective JJ 36297 2629 17 against against IN 36297 2629 18 the the DT 36297 2629 19 submarine submarine NN 36297 2629 20 . . . 36297 2630 1 The the DT 36297 2630 2 movement movement NN 36297 2630 3 of of IN 36297 2630 4 a a DT 36297 2630 5 target target NN 36297 2630 6 is be VBZ 36297 2630 7 of of IN 36297 2630 8 much much RB 36297 2630 9 less less JJR 36297 2630 10 importance importance NN 36297 2630 11 in in IN 36297 2630 12 the the DT 36297 2630 13 case case NN 36297 2630 14 of of IN 36297 2630 15 gun gun NN 36297 2630 16 - - HYPH 36297 2630 17 fire fire NN 36297 2630 18 than than IN 36297 2630 19 in in IN 36297 2630 20 the the DT 36297 2630 21 case case NN 36297 2630 22 of of IN 36297 2630 23 the the DT 36297 2630 24 torpedo torpedo NN 36297 2630 25 with with IN 36297 2630 26 its -PRON- PRP$ 36297 2630 27 relatively relatively RB 36297 2630 28 low low JJ 36297 2630 29 velocity velocity NN 36297 2630 30 . . . 36297 2631 1 The the DT 36297 2631 2 submarine submarine NN 36297 2631 3 gunner gunner NN 36297 2631 4 must must MD 36297 2631 5 have have VB 36297 2631 6 the the DT 36297 2631 7 range range NN 36297 2631 8 , , , 36297 2631 9 speed speed NN 36297 2631 10 , , , 36297 2631 11 and and CC 36297 2631 12 course course NN 36297 2631 13 of of IN 36297 2631 14 the the DT 36297 2631 15 target target NN 36297 2631 16 in in IN 36297 2631 17 order order NN 36297 2631 18 to to TO 36297 2631 19 fire fire VB 36297 2631 20 a a DT 36297 2631 21 torpedo torpedo NN 36297 2631 22 with with IN 36297 2631 23 any any DT 36297 2631 24 hope hope NN 36297 2631 25 of of IN 36297 2631 26 a a DT 36297 2631 27 hit hit NN 36297 2631 28 . . . 36297 2632 1 Therefore therefore RB 36297 2632 2 , , , 36297 2632 3 any any DT 36297 2632 4 uncertainties uncertainty NNS 36297 2632 5 that that WDT 36297 2632 6 could could MD 36297 2632 7 be be VB 36297 2632 8 introduced introduce VBN 36297 2632 9 pertaining pertain VBG 36297 2632 10 to to IN 36297 2632 11 these these DT 36297 2632 12 factors factor NNS 36297 2632 13 would would MD 36297 2632 14 be be VB 36297 2632 15 to to IN 36297 2632 16 the the DT 36297 2632 17 advantage advantage NN 36297 2632 18 of of IN 36297 2632 19 the the DT 36297 2632 20 submarine submarine NN 36297 2632 21 's 's POS 36297 2632 22 prey prey NN 36297 2632 23 . . . 36297 2633 1 For for IN 36297 2633 2 example example NN 36297 2633 3 , , , 36297 2633 4 low low JJ 36297 2633 5 visibility visibility NN 36297 2633 6 gave give VBD 36297 2633 7 way way NN 36297 2633 8 to to IN 36297 2633 9 confusibility confusibility NN 36297 2633 10 in in IN 36297 2633 11 the the DT 36297 2633 12 discussions discussion NNS 36297 2633 13 of of IN 36297 2633 14 defence defence NN 36297 2633 15 against against IN 36297 2633 16 the the DT 36297 2633 17 submarine submarine NN 36297 2633 18 and and CC 36297 2633 19 the the DT 36297 2633 20 slogan slogan NN 36297 2633 21 , , , 36297 2633 22 " " `` 36297 2633 23 A a DT 36297 2633 24 miss miss NN 36297 2633 25 is be VBZ 36297 2633 26 as as RB 36297 2633 27 good good JJ 36297 2633 28 as as IN 36297 2633 29 a a DT 36297 2633 30 mile mile NN 36297 2633 31 " " '' 36297 2633 32 was be VBD 36297 2633 33 adopted adopt VBN 36297 2633 34 . . . 36297 2634 1 The the DT 36297 2634 2 foregoing foregoing NN 36297 2634 3 factors factor NNS 36297 2634 4 can can MD 36297 2634 5 not not RB 36297 2634 6 be be VB 36297 2634 7 determined determine VBN 36297 2634 8 ordinarily ordinarily RB 36297 2634 9 with with IN 36297 2634 10 high high JJ 36297 2634 11 accuracy accuracy NN 36297 2634 12 , , , 36297 2634 13 so so IN 36297 2634 14 that that IN 36297 2634 15 it -PRON- PRP 36297 2634 16 appeared appear VBD 36297 2634 17 possible possible JJ 36297 2634 18 to to TO 36297 2634 19 add add VB 36297 2634 20 somewhat somewhat RB 36297 2634 21 to to IN 36297 2634 22 the the DT 36297 2634 23 difficulties difficulty NNS 36297 2634 24 of of IN 36297 2634 25 the the DT 36297 2634 26 submarine submarine NN 36297 2634 27 commander commander NN 36297 2634 28 . . . 36297 2635 1 Many many JJ 36297 2635 2 optical optical JJ 36297 2635 3 illusions illusion NNS 36297 2635 4 have have VBP 36297 2635 5 been be VBN 36297 2635 6 devised devise VBN 36297 2635 7 and and CC 36297 2635 8 studied study VBN 36297 2635 9 by by IN 36297 2635 10 scientists scientist NNS 36297 2635 11 . . . 36297 2636 1 In in IN 36297 2636 2 fact fact NN 36297 2636 3 , , , 36297 2636 4 some some DT 36297 2636 5 of of IN 36297 2636 6 these these DT 36297 2636 7 tricks trick NNS 36297 2636 8 are be VBP 36297 2636 9 well well RB 36297 2636 10 known known JJ 36297 2636 11 to to IN 36297 2636 12 the the DT 36297 2636 13 general general JJ 36297 2636 14 reader reader NN 36297 2636 15 . . . 36297 2637 1 Straight straight JJ 36297 2637 2 lines line NNS 36297 2637 3 may may MD 36297 2637 4 appear appear VB 36297 2637 5 broken break VBN 36297 2637 6 , , , 36297 2637 7 convergent convergent NN 36297 2637 8 , , , 36297 2637 9 or or CC 36297 2637 10 divergent divergent JJ 36297 2637 11 by by IN 36297 2637 12 providing provide VBG 36297 2637 13 certain certain JJ 36297 2637 14 patterns pattern NNS 36297 2637 15 or or CC 36297 2637 16 lines line NNS 36297 2637 17 intermingled intermingle VBD 36297 2637 18 with with IN 36297 2637 19 them -PRON- PRP 36297 2637 20 . . . 36297 2638 1 Many many JJ 36297 2638 2 of of IN 36297 2638 3 these these DT 36297 2638 4 were be VBD 36297 2638 5 applied apply VBN 36297 2638 6 to to IN 36297 2638 7 models model NNS 36297 2638 8 in in IN 36297 2638 9 laboratory laboratory NN 36297 2638 10 experiments experiment NNS 36297 2638 11 and and CC 36297 2638 12 it -PRON- PRP 36297 2638 13 has have VBZ 36297 2638 14 been be VBN 36297 2638 15 shown show VBN 36297 2638 16 that that IN 36297 2638 17 confusion confusion NN 36297 2638 18 results result NNS 36297 2638 19 as as IN 36297 2638 20 to to IN 36297 2638 21 the the DT 36297 2638 22 course course NN 36297 2638 23 of of IN 36297 2638 24 the the DT 36297 2638 25 vessel vessel NN 36297 2638 26 . . . 36297 2639 1 The the DT 36297 2639 2 application application NN 36297 2639 3 of of IN 36297 2639 4 these these DT 36297 2639 5 on on IN 36297 2639 6 vessels vessel NNS 36297 2639 7 has have VBZ 36297 2639 8 resulted result VBN 36297 2639 9 in in IN 36297 2639 10 the the DT 36297 2639 11 grotesque grotesque JJ 36297 2639 12 patterns pattern NNS 36297 2639 13 to to TO 36297 2639 14 be be VB 36297 2639 15 seen see VBN 36297 2639 16 on on IN 36297 2639 17 ships ship NNS 36297 2639 18 during during IN 36297 2639 19 the the DT 36297 2639 20 latter latter JJ 36297 2639 21 stage stage NN 36297 2639 22 of of IN 36297 2639 23 the the DT 36297 2639 24 war war NN 36297 2639 25 . . . 36297 2640 1 It -PRON- PRP 36297 2640 2 is be VBZ 36297 2640 3 well well RB 36297 2640 4 known know VBN 36297 2640 5 that that IN 36297 2640 6 these these DT 36297 2640 7 illusions illusion NNS 36297 2640 8 are be VBP 36297 2640 9 most most RBS 36297 2640 10 effective effective JJ 36297 2640 11 when when WRB 36297 2640 12 the the DT 36297 2640 13 greatest great JJS 36297 2640 14 contrasts contrast NNS 36297 2640 15 are be VBP 36297 2640 16 used use VBN 36297 2640 17 , , , 36297 2640 18 hence hence RB 36297 2640 19 black black JJ 36297 2640 20 and and CC 36297 2640 21 white white JJ 36297 2640 22 patterns pattern NNS 36297 2640 23 are be VBP 36297 2640 24 common common JJ 36297 2640 25 . . . 36297 2641 1 Color color NN 36297 2641 2 has have VBZ 36297 2641 3 not not RB 36297 2641 4 been be VBN 36297 2641 5 utilized utilize VBN 36297 2641 6 as as RB 36297 2641 7 definitely definitely RB 36297 2641 8 as as IN 36297 2641 9 pattern pattern NN 36297 2641 10 in in IN 36297 2641 11 confusibility confusibility NN 36297 2641 12 , , , 36297 2641 13 although although IN 36297 2641 14 there there EX 36297 2641 15 is be VBZ 36297 2641 16 a a DT 36297 2641 17 secondary secondary JJ 36297 2641 18 aim aim NN 36297 2641 19 of of IN 36297 2641 20 obtaining obtain VBG 36297 2641 21 low low JJ 36297 2641 22 visibility visibility NN 36297 2641 23 at at IN 36297 2641 24 a a DT 36297 2641 25 great great JJ 36297 2641 26 distance distance NN 36297 2641 27 by by IN 36297 2641 28 properly properly RB 36297 2641 29 balancing balance VBG 36297 2641 30 the the DT 36297 2641 31 black black JJ 36297 2641 32 , , , 36297 2641 33 white white JJ 36297 2641 34 , , , 36297 2641 35 and and CC 36297 2641 36 other other JJ 36297 2641 37 colors color NNS 36297 2641 38 so so IN 36297 2641 39 that that IN 36297 2641 40 a a DT 36297 2641 41 blue blue JJ 36297 2641 42 - - HYPH 36297 2641 43 gray gray JJ 36297 2641 44 results result NNS 36297 2641 45 at at IN 36297 2641 46 distances distance NNS 36297 2641 47 too too RB 36297 2641 48 great great JJ 36297 2641 49 for for IN 36297 2641 50 the the DT 36297 2641 51 individual individual JJ 36297 2641 52 patterns pattern NNS 36297 2641 53 to to TO 36297 2641 54 be be VB 36297 2641 55 resolved resolve VBN 36297 2641 56 by by IN 36297 2641 57 the the DT 36297 2641 58 eye eye NN 36297 2641 59 . . . 36297 2642 1 Color color NN 36297 2642 2 could could MD 36297 2642 3 be be VB 36297 2642 4 used use VBN 36297 2642 5 for for IN 36297 2642 6 the the DT 36297 2642 7 purpose purpose NN 36297 2642 8 of of IN 36297 2642 9 increasing increase VBG 36297 2642 10 the the DT 36297 2642 11 conclusion conclusion NN 36297 2642 12 by by IN 36297 2642 13 apparently apparently RB 36297 2642 14 altering alter VBG 36297 2642 15 the the DT 36297 2642 16 perspective perspective NN 36297 2642 17 . . . 36297 2643 1 For for IN 36297 2643 2 example example NN 36297 2643 3 , , , 36297 2643 4 blue blue JJ 36297 2643 5 and and CC 36297 2643 6 red red JJ 36297 2643 7 patterns pattern NNS 36297 2643 8 on on IN 36297 2643 9 the the DT 36297 2643 10 same same JJ 36297 2643 11 surface surface NN 36297 2643 12 do do VBP 36297 2643 13 not not RB 36297 2643 14 usually usually RB 36297 2643 15 appear appear VB 36297 2643 16 at at IN 36297 2643 17 the the DT 36297 2643 18 same same JJ 36297 2643 19 distance distance NN 36297 2643 20 , , , 36297 2643 21 the the DT 36297 2643 22 red red JJ 36297 2643 23 appearing appear VBG 36297 2643 24 closer close RBR 36297 2643 25 than than IN 36297 2643 26 the the DT 36297 2643 27 blue blue NN 36297 2643 28 . . . 36297 2644 1 [ [ -LRB- 36297 2644 2 Illustration illustration NN 36297 2644 3 : : : 36297 2644 4 Fig Fig NNP 36297 2644 5 . . . 36297 2645 1 92.--A 92.--a CD 36297 2645 2 primary primary JJ 36297 2645 3 stage stage NN 36297 2645 4 in in IN 36297 2645 5 the the DT 36297 2645 6 evolution evolution NN 36297 2645 7 of of IN 36297 2645 8 the the DT 36297 2645 9 use use NN 36297 2645 10 of of IN 36297 2645 11 geometrical geometrical JJ 36297 2645 12 - - HYPH 36297 2645 13 optical optical JJ 36297 2645 14 illusions illusion NNS 36297 2645 15 on on IN 36297 2645 16 ships ship NNS 36297 2645 17 . . . 36297 2645 18 ] ] -RRB- 36297 2646 1 Such such JJ 36297 2646 2 apparently apparently RB 36297 2646 3 grotesque grotesque JJ 36297 2646 4 patterns pattern NNS 36297 2646 5 aimed aim VBN 36297 2646 6 to to TO 36297 2646 7 distort distort VB 36297 2646 8 the the DT 36297 2646 9 lines line NNS 36297 2646 10 of of IN 36297 2646 11 the the DT 36297 2646 12 ship ship NN 36297 2646 13 and and CC 36297 2646 14 to to TO 36297 2646 15 warp warp VB 36297 2646 16 the the DT 36297 2646 17 perspective perspective NN 36297 2646 18 by by IN 36297 2646 19 which which WDT 36297 2646 20 the the DT 36297 2646 21 course course NN 36297 2646 22 is be VBZ 36297 2646 23 estimated estimate VBN 36297 2646 24 . . . 36297 2647 1 This this DT 36297 2647 2 was be VBD 36297 2647 3 the the DT 36297 2647 4 final final JJ 36297 2647 5 type type NN 36297 2647 6 of of IN 36297 2647 7 marine marine JJ 36297 2647 8 camouflage camouflage NN 36297 2647 9 at at IN 36297 2647 10 the the DT 36297 2647 11 close close NN 36297 2647 12 of of IN 36297 2647 13 the the DT 36297 2647 14 war war NN 36297 2647 15 . . . 36297 2648 1 Besides besides IN 36297 2648 2 relying rely VBG 36297 2648 3 upon upon IN 36297 2648 4 these these DT 36297 2648 5 illusions illusion NNS 36297 2648 6 , , , 36297 2648 7 ships ship NNS 36297 2648 8 zigzagged zigzagged JJ 36297 2648 9 on on IN 36297 2648 10 being be VBG 36297 2648 11 attacked attack VBN 36297 2648 12 and and CC 36297 2648 13 aimed aim VBN 36297 2648 14 in in IN 36297 2648 15 other other JJ 36297 2648 16 ways way NNS 36297 2648 17 to to TO 36297 2648 18 confuse confuse VB 36297 2648 19 the the DT 36297 2648 20 enemy enemy NN 36297 2648 21 . . . 36297 2649 1 No no DT 36297 2649 2 general general JJ 36297 2649 3 attempt attempt NN 36297 2649 4 was be VBD 36297 2649 5 made make VBN 36297 2649 6 to to TO 36297 2649 7 disguise disguise VB 36297 2649 8 the the DT 36297 2649 9 bow bow NN 36297 2649 10 , , , 36297 2649 11 because because IN 36297 2649 12 the the DT 36297 2649 13 bow bow NN 36297 2649 14 - - HYPH 36297 2649 15 wave wave NN 36297 2649 16 was be VBD 36297 2649 17 generally generally RB 36297 2649 18 visible visible JJ 36297 2649 19 . . . 36297 2650 1 However however RB 36297 2650 2 , , , 36297 2650 3 attempts attempt NNS 36297 2650 4 have have VBP 36297 2650 5 been be VBN 36297 2650 6 made make VBN 36297 2650 7 to to TO 36297 2650 8 increase increase VB 36297 2650 9 it -PRON- PRP 36297 2650 10 apparently apparently RB 36297 2650 11 and and CC 36297 2650 12 even even RB 36297 2650 13 to to TO 36297 2650 14 provide provide VB 36297 2650 15 one one CD 36297 2650 16 at at IN 36297 2650 17 the the DT 36297 2650 18 stern stern NN 36297 2650 19 . . . 36297 2651 1 In in IN 36297 2651 2 fact fact NN 36297 2651 3 , , , 36297 2651 4 ingenuity ingenuity NN 36297 2651 5 was be VBD 36297 2651 6 heavily heavily RB 36297 2651 7 drawn draw VBN 36297 2651 8 upon upon IN 36297 2651 9 and and CC 36297 2651 10 many many JJ 36297 2651 11 expedients expedient NNS 36297 2651 12 were be VBD 36297 2651 13 tried try VBN 36297 2651 14 . . . 36297 2652 1 After after IN 36297 2652 2 low low JJ 36297 2652 3 - - HYPH 36297 2652 4 visibility visibility NN 36297 2652 5 was be VBD 36297 2652 6 abandoned abandon VBN 36297 2652 7 in in IN 36297 2652 8 favor favor NN 36297 2652 9 of of IN 36297 2652 10 the the DT 36297 2652 11 optical optical JJ 36297 2652 12 illusion illusion NN 36297 2652 13 for for IN 36297 2652 14 frustrating frustrate VBG 36297 2652 15 the the DT 36297 2652 16 torpedo torpedo NN 36297 2652 17 - - HYPH 36297 2652 18 attack attack NN 36297 2652 19 by by IN 36297 2652 20 the the DT 36297 2652 21 submarine submarine NN 36297 2652 22 , , , 36297 2652 23 there there EX 36297 2652 24 was be VBD 36297 2652 25 a a DT 36297 2652 26 period period NN 36297 2652 27 during during IN 36297 2652 28 which which WDT 36297 2652 29 merely merely RB 36297 2652 30 a a DT 36297 2652 31 mottled mottle VBN 36297 2652 32 pattern pattern NN 36297 2652 33 was be VBD 36297 2652 34 used use VBN 36297 2652 35 for for IN 36297 2652 36 vessels vessel NNS 36297 2652 37 . . . 36297 2653 1 Gradually gradually RB 36297 2653 2 this this DT 36297 2653 3 evolved evolve VBD 36297 2653 4 toward toward IN 36297 2653 5 such such JJ 36297 2653 6 patterns pattern NNS 36297 2653 7 as as IN 36297 2653 8 shown show VBN 36297 2653 9 in in IN 36297 2653 10 Fig Fig NNP 36297 2653 11 . . . 36297 2654 1 92 92 CD 36297 2654 2 . . . 36297 2655 1 In in IN 36297 2655 2 this this DT 36297 2655 3 illustration illustration NN 36297 2655 4 it -PRON- PRP 36297 2655 5 is be VBZ 36297 2655 6 seen see VBN 36297 2655 7 that that IN 36297 2655 8 the the DT 36297 2655 9 optical optical JJ 36297 2655 10 - - HYPH 36297 2655 11 illusion illusion NN 36297 2655 12 idea idea NN 36297 2655 13 has have VBZ 36297 2655 14 taken take VBN 36297 2655 15 definite definite JJ 36297 2655 16 form form NN 36297 2655 17 . . . 36297 2656 1 During during IN 36297 2656 2 the the DT 36297 2656 3 period period NN 36297 2656 4 of of IN 36297 2656 5 uncertainty uncertainty NN 36297 2656 6 as as IN 36297 2656 7 to to IN 36297 2656 8 the the DT 36297 2656 9 course course NN 36297 2656 10 the the DT 36297 2656 11 pattern pattern NN 36297 2656 12 should should MD 36297 2656 13 take take VB 36297 2656 14 , , , 36297 2656 15 a a DT 36297 2656 16 regularity regularity NN 36297 2656 17 of of IN 36297 2656 18 pattern pattern NN 36297 2656 19 was be VBD 36297 2656 20 tried try VBN 36297 2656 21 , , , 36297 2656 22 such such JJ 36297 2656 23 as as IN 36297 2656 24 illustrated illustrate VBN 36297 2656 25 in in IN 36297 2656 26 Figs Figs NNP 36297 2656 27 . . . 36297 2657 1 93 93 CD 36297 2657 2 and and CC 36297 2657 3 94 94 CD 36297 2657 4 . . . 36297 2658 1 Finally finally RB 36297 2658 2 , , , 36297 2658 3 when when WRB 36297 2658 4 it -PRON- PRP 36297 2658 5 dawned dawn VBD 36297 2658 6 more more RBR 36297 2658 7 or or CC 36297 2658 8 less less RBR 36297 2658 9 simultaneously simultaneously RB 36297 2658 10 upon upon IN 36297 2658 11 various various JJ 36297 2658 12 scientific scientific JJ 36297 2658 13 men man NNS 36297 2658 14 , , , 36297 2658 15 who who WP 36297 2658 16 were be VBD 36297 2658 17 studying study VBG 36297 2658 18 the the DT 36297 2658 19 problems problem NNS 36297 2658 20 of of IN 36297 2658 21 protecting protect VBG 36297 2658 22 vessels vessel NNS 36297 2658 23 upon upon IN 36297 2658 24 the the DT 36297 2658 25 seas sea NNS 36297 2658 26 , , , 36297 2658 27 that that IN 36297 2658 28 the the DT 36297 2658 29 geometrical geometrical JJ 36297 2658 30 - - HYPH 36297 2658 31 optical optical JJ 36297 2658 32 illusion illusion NN 36297 2658 33 in in IN 36297 2658 34 its -PRON- PRP$ 36297 2658 35 well well RB 36297 2658 36 - - HYPH 36297 2658 37 known know VBN 36297 2658 38 forms form NNS 36297 2658 39 was be VBD 36297 2658 40 directly directly RB 36297 2658 41 adaptable adaptable JJ 36297 2658 42 , , , 36297 2658 43 renewed renew VBN 36297 2658 44 impetus impetus NN 36297 2658 45 was be VBD 36297 2658 46 given give VBN 36297 2658 47 to to IN 36297 2658 48 investigation investigation NN 36297 2658 49 . . . 36297 2659 1 The the DT 36297 2659 2 scientific scientific JJ 36297 2659 3 literature literature NN 36297 2659 4 yielded yield VBD 36297 2659 5 many many JJ 36297 2659 6 facts fact NNS 36297 2659 7 but but CC 36297 2659 8 the the DT 36297 2659 9 problems problem NNS 36297 2659 10 were be VBD 36297 2659 11 also also RB 36297 2659 12 studied study VBN 36297 2659 13 directly directly RB 36297 2659 14 by by IN 36297 2659 15 means mean NNS 36297 2659 16 of of IN 36297 2659 17 models model NNS 36297 2659 18 . . . 36297 2660 1 The the DT 36297 2660 2 latter latter JJ 36297 2660 3 study study NN 36297 2660 4 is be VBZ 36297 2660 5 illustrated illustrate VBN 36297 2660 6 by by IN 36297 2660 7 Figs fig NNS 36297 2660 8 . . . 36297 2661 1 95 95 CD 36297 2661 2 and and CC 36297 2661 3 96 96 CD 36297 2661 4 , , , 36297 2661 5 the the DT 36297 2661 6 originals original NNS 36297 2661 7 having have VBG 36297 2661 8 been be VBN 36297 2661 9 furnished furnish VBN 36297 2661 10 by by IN 36297 2661 11 Mr. Mr. NNP 36297 2661 12 E. E. NNP 36297 2661 13 L. L. NNP 36297 2661 14 Warner,[11 Warner,[11 NNP 36297 2661 15 ] ] -RRB- 36297 2661 16 who who WP 36297 2661 17 among among IN 36297 2661 18 others other NNS 36297 2661 19 prosecuted prosecute VBD 36297 2661 20 a a DT 36297 2661 21 study study NN 36297 2661 22 of of IN 36297 2661 23 the the DT 36297 2661 24 application application NN 36297 2661 25 of of IN 36297 2661 26 illusions illusion NNS 36297 2661 27 to to IN 36297 2661 28 vessels vessel NNS 36297 2661 29 . . . 36297 2662 1 The the DT 36297 2662 2 final final JJ 36297 2662 3 results result NNS 36297 2662 4 were be VBD 36297 2662 5 gratifying gratify VBG 36297 2662 6 , , , 36297 2662 7 as as IN 36297 2662 8 shown show VBN 36297 2662 9 to to IN 36297 2662 10 some some DT 36297 2662 11 extent extent NN 36297 2662 12 in in IN 36297 2662 13 Figs Figs NNP 36297 2662 14 . . . 36297 2663 1 97 97 CD 36297 2663 2 and and CC 36297 2663 3 98 98 CD 36297 2663 4 , , , 36297 2663 5 also also RB 36297 2663 6 kindly kindly RB 36297 2663 7 furnished furnish VBN 36297 2663 8 by by IN 36297 2663 9 Mr. Mr. NNP 36297 2663 10 Warner Warner NNP 36297 2663 11 . . . 36297 2664 1 It -PRON- PRP 36297 2664 2 is be VBZ 36297 2664 3 seen see VBN 36297 2664 4 that that IN 36297 2664 5 these these DT 36297 2664 6 patterns pattern NNS 36297 2664 7 are be VBP 36297 2664 8 really really RB 36297 2664 9 deceiving deceive VBG 36297 2664 10 as as IN 36297 2664 11 to to IN 36297 2664 12 the the DT 36297 2664 13 course course NN 36297 2664 14 of of IN 36297 2664 15 the the DT 36297 2664 16 vessel vessel NN 36297 2664 17 . . . 36297 2665 1 [ [ -LRB- 36297 2665 2 Illustration illustration NN 36297 2665 3 : : : 36297 2665 4 Figs fig NNS 36297 2665 5 . . . 36297 2666 1 93 93 CD 36297 2666 2 and and CC 36297 2666 3 94.--Attempts 94.--attempts CD 36297 2666 4 at at IN 36297 2666 5 distortion distortion NN 36297 2666 6 of of IN 36297 2666 7 outline outline NN 36297 2666 8 which which WDT 36297 2666 9 preceded precede VBD 36297 2666 10 the the DT 36297 2666 11 adoption adoption NN 36297 2666 12 of of IN 36297 2666 13 geometrical geometrical JJ 36297 2666 14 - - HYPH 36297 2666 15 optical optical JJ 36297 2666 16 illusions illusion NNS 36297 2666 17 for for IN 36297 2666 18 ships ship NNS 36297 2666 19 . . . 36297 2666 20 ] ] -RRB- 36297 2667 1 [ [ -LRB- 36297 2667 2 Illustration illustration NN 36297 2667 3 : : : 36297 2667 4 Figs fig NNS 36297 2667 5 . . . 36297 2668 1 95 95 CD 36297 2668 2 and and CC 36297 2668 3 96.--Illustrating 96.--illustrating CD 36297 2668 4 the the DT 36297 2668 5 use use NN 36297 2668 6 of of IN 36297 2668 7 models model NNS 36297 2668 8 by by IN 36297 2668 9 the the DT 36297 2668 10 Navy Navy NNP 36297 2668 11 Department Department NNP 36297 2668 12 in in IN 36297 2668 13 developing develop VBG 36297 2668 14 the the DT 36297 2668 15 geometrical geometrical JJ 36297 2668 16 - - HYPH 36297 2668 17 illusion illusion NN 36297 2668 18 for for IN 36297 2668 19 ships ship NNS 36297 2668 20 . . . 36297 2668 21 ] ] -RRB- 36297 2669 1 The the DT 36297 2669 2 convoy convoy NN 36297 2669 3 system system NN 36297 2669 4 is be VBZ 36297 2669 5 well well RB 36297 2669 6 known known JJ 36297 2669 7 to to IN 36297 2669 8 the the DT 36297 2669 9 reader reader NN 36297 2669 10 . . . 36297 2670 1 This this DT 36297 2670 2 saved save VBD 36297 2670 3 many many JJ 36297 2670 4 vessels vessel NNS 36297 2670 5 from from IN 36297 2670 6 destruction destruction NN 36297 2670 7 . . . 36297 2671 1 Vessels vessel NNS 36297 2671 2 of of IN 36297 2671 3 the the DT 36297 2671 4 same same JJ 36297 2671 5 speed speed NN 36297 2671 6 were be VBD 36297 2671 7 grouped group VBN 36297 2671 8 together together RB 36297 2671 9 and and CC 36297 2671 10 steamed steam VBN 36297 2671 11 in in IN 36297 2671 12 flocks flock NNS 36297 2671 13 across across IN 36297 2671 14 the the DT 36297 2671 15 Atlantic Atlantic NNP 36297 2671 16 . . . 36297 2672 1 Anyone anyone NN 36297 2672 2 who who WP 36297 2672 3 has have VBZ 36297 2672 4 had have VBN 36297 2672 5 the the DT 36297 2672 6 extreme extreme JJ 36297 2672 7 pleasure pleasure NN 36297 2672 8 of of IN 36297 2672 9 looking look VBG 36297 2672 10 down down RP 36297 2672 11 from from IN 36297 2672 12 an an DT 36297 2672 13 airplane airplane NN 36297 2672 14 upon upon IN 36297 2672 15 these these DT 36297 2672 16 convoys convoy NNS 36297 2672 17 led lead VBN 36297 2672 18 by by IN 36297 2672 19 destroyers destroyer NNS 36297 2672 20 and and CC 36297 2672 21 attended attend VBN 36297 2672 22 by by IN 36297 2672 23 chasers chaser NNS 36297 2672 24 is be VBZ 36297 2672 25 strongly strongly RB 36297 2672 26 impressed impressed JJ 36297 2672 27 with with IN 36297 2672 28 the the DT 36297 2672 29 old old JJ 36297 2672 30 adage adage NN 36297 2672 31 , , , 36297 2672 32 " " `` 36297 2672 33 In in IN 36297 2672 34 unity unity NN 36297 2672 35 there there EX 36297 2672 36 is be VBZ 36297 2672 37 strength strength NN 36297 2672 38 . . . 36297 2672 39 " " '' 36297 2673 1 Before before IN 36297 2673 2 the the DT 36297 2673 3 war war NN 36297 2673 4 began begin VBD 36297 2673 5 , , , 36297 2673 6 a a DT 36297 2673 7 Brazilian brazilian JJ 36297 2673 8 battleship battleship NN 36297 2673 9 launched launch VBN 36297 2673 10 in in IN 36297 2673 11 this this DT 36297 2673 12 country country NN 36297 2673 13 was be VBD 36297 2673 14 provided provide VBN 36297 2673 15 with with IN 36297 2673 16 a a DT 36297 2673 17 system system NN 36297 2673 18 of of IN 36297 2673 19 blue blue JJ 36297 2673 20 lights light NNS 36297 2673 21 for for IN 36297 2673 22 use use NN 36297 2673 23 when when WRB 36297 2673 24 near near IN 36297 2673 25 the the DT 36297 2673 26 enemy enemy NN 36297 2673 27 at at IN 36297 2673 28 night night NN 36297 2673 29 . . . 36297 2674 1 Blue Blue NNP 36297 2674 2 was be VBD 36297 2674 3 adopted adopt VBN 36297 2674 4 doubtless doubtless RB 36297 2674 5 for for IN 36297 2674 6 its -PRON- PRP$ 36297 2674 7 low low JJ 36297 2674 8 range range NN 36297 2674 9 compared compare VBN 36297 2674 10 with with IN 36297 2674 11 light light NN 36297 2674 12 of of IN 36297 2674 13 other other JJ 36297 2674 14 colors color NNS 36297 2674 15 . . . 36297 2675 1 We -PRON- PRP 36297 2675 2 know know VBP 36297 2675 3 that that IN 36297 2675 4 the the DT 36297 2675 5 setting set VBG 36297 2675 6 sun sun NN 36297 2675 7 is be VBZ 36297 2675 8 red red JJ 36297 2675 9 because because IN 36297 2675 10 the the DT 36297 2675 11 atmospheric atmospheric JJ 36297 2675 12 dust dust NN 36297 2675 13 , , , 36297 2675 14 smoke smoke NN 36297 2675 15 , , , 36297 2675 16 and and CC 36297 2675 17 moisture moisture NN 36297 2675 18 have have VBP 36297 2675 19 scattered scatter VBN 36297 2675 20 and and CC 36297 2675 21 absorbed absorb VBN 36297 2675 22 the the DT 36297 2675 23 blue blue JJ 36297 2675 24 and and CC 36297 2675 25 green green JJ 36297 2675 26 rays ray NNS 36297 2675 27 more more JJR 36297 2675 28 than than IN 36297 2675 29 the the DT 36297 2675 30 red red JJ 36297 2675 31 and and CC 36297 2675 32 yellow yellow JJ 36297 2675 33 rays ray NNS 36297 2675 34 . . . 36297 2676 1 In in IN 36297 2676 2 other other JJ 36297 2676 3 words word NNS 36297 2676 4 the the DT 36297 2676 5 penetrating penetrating NN 36297 2676 6 power power NN 36297 2676 7 of of IN 36297 2676 8 the the DT 36297 2676 9 red red JJ 36297 2676 10 and and CC 36297 2676 11 yellow yellow JJ 36297 2676 12 is be VBZ 36297 2676 13 greater great JJR 36297 2676 14 than than IN 36297 2676 15 that that DT 36297 2676 16 of of IN 36297 2676 17 the the DT 36297 2676 18 blue blue JJ 36297 2676 19 rays ray NNS 36297 2676 20 . . . 36297 2677 1 This this DT 36297 2677 2 country country NN 36297 2677 3 made make VBD 36297 2677 4 use use NN 36297 2677 5 of of IN 36297 2677 6 this this DT 36297 2677 7 expedient expedient NN 36297 2677 8 to to IN 36297 2677 9 some some DT 36297 2677 10 extent extent NN 36297 2677 11 . . . 36297 2678 1 Of of RB 36297 2678 2 course course RB 36297 2678 3 , , , 36297 2678 4 all all DT 36297 2678 5 other other JJ 36297 2678 6 lights light NNS 36297 2678 7 were be VBD 36297 2678 8 extinguished extinguish VBN 36297 2678 9 and and CC 36297 2678 10 portholes porthole NNS 36297 2678 11 were be VBD 36297 2678 12 closed close VBN 36297 2678 13 in in IN 36297 2678 14 ocean ocean NN 36297 2678 15 travel travel NN 36297 2678 16 during during IN 36297 2678 17 the the DT 36297 2678 18 submarine submarine NN 36297 2678 19 menace menace NN 36297 2678 20 . . . 36297 2679 1 [ [ -LRB- 36297 2679 2 Illustration illustration NN 36297 2679 3 : : : 36297 2679 4 Figs fig NNS 36297 2679 5 . . . 36297 2680 1 97 97 CD 36297 2680 2 and and CC 36297 2680 3 98.--Examples 98.--examples CD 36297 2680 4 of of IN 36297 2680 5 the the DT 36297 2680 6 geometrical geometrical JJ 36297 2680 7 - - HYPH 36297 2680 8 optical optical JJ 36297 2680 9 illusion illusion NN 36297 2680 10 as as IN 36297 2680 11 finally finally RB 36297 2680 12 applied apply VBN 36297 2680 13 . . . 36297 2680 14 ] ] -RRB- 36297 2681 1 Naturally naturally RB 36297 2681 2 smoke smoke NN 36297 2681 3 - - HYPH 36297 2681 4 screens screen NNS 36297 2681 5 were be VBD 36297 2681 6 adopted adopt VBN 36297 2681 7 as as IN 36297 2681 8 a a DT 36297 2681 9 defensive defensive JJ 36297 2681 10 measure measure NN 36297 2681 11 on on IN 36297 2681 12 sea sea NN 36297 2681 13 as as RB 36297 2681 14 well well RB 36297 2681 15 as as IN 36297 2681 16 on on IN 36297 2681 17 land land NN 36297 2681 18 . . . 36297 2682 1 Destroyers destroyer NNS 36297 2682 2 belch belch VBP 36297 2682 3 dense dense JJ 36297 2682 4 smoke smoke NN 36297 2682 5 from from IN 36297 2682 6 their -PRON- PRP$ 36297 2682 7 stacks stack NNS 36297 2682 8 in in IN 36297 2682 9 order order NN 36297 2682 10 to to IN 36297 2682 11 screen screen NN 36297 2682 12 battleships battleship NNS 36297 2682 13 . . . 36297 2683 1 Many many JJ 36297 2683 2 types type NNS 36297 2683 3 of of IN 36297 2683 4 smoke smoke NN 36297 2683 5 - - HYPH 36297 2683 6 boxes box NNS 36297 2683 7 have have VBP 36297 2683 8 been be VBN 36297 2683 9 devised devise VBN 36297 2683 10 or or CC 36297 2683 11 suggested suggest VBN 36297 2683 12 . . . 36297 2684 1 The the DT 36297 2684 2 smoke smoke NN 36297 2684 3 from from IN 36297 2684 4 these these DT 36297 2684 5 is be VBZ 36297 2684 6 produced produce VBN 36297 2684 7 chemically chemically RB 36297 2684 8 and and CC 36297 2684 9 the the DT 36297 2684 10 apparatus apparatus NN 36297 2684 11 must must MD 36297 2684 12 be be VB 36297 2684 13 simple simple JJ 36297 2684 14 and and CC 36297 2684 15 safe safe JJ 36297 2684 16 . . . 36297 2685 1 If if IN 36297 2685 2 a a DT 36297 2685 3 merchantman merchantman NN 36297 2685 4 were be VBD 36297 2685 5 attacked attack VBN 36297 2685 6 by by IN 36297 2685 7 a a DT 36297 2685 8 submarine submarine NN 36297 2685 9 immediately immediately RB 36297 2685 10 smoke smoke NN 36297 2685 11 - - HYPH 36297 2685 12 boxes box NNS 36297 2685 13 would would MD 36297 2685 14 be be VB 36297 2685 15 dumped dump VBN 36297 2685 16 overboard overboard RB 36297 2685 17 or or CC 36297 2685 18 some some DT 36297 2685 19 which which WDT 36297 2685 20 were be VBD 36297 2685 21 installed instal VBN 36297 2685 22 on on IN 36297 2685 23 deck deck NN 36297 2685 24 would would MD 36297 2685 25 be be VB 36297 2685 26 put put VBN 36297 2685 27 into into IN 36297 2685 28 operation operation NN 36297 2685 29 and and CC 36297 2685 30 the the DT 36297 2685 31 ship ship NN 36297 2685 32 would would MD 36297 2685 33 be be VB 36297 2685 34 steered steer VBN 36297 2685 35 in in IN 36297 2685 36 a a DT 36297 2685 37 zigzag zigzag NN 36297 2685 38 course course NN 36297 2685 39 . . . 36297 2686 1 These these DT 36297 2686 2 expedients expedient NNS 36297 2686 3 were be VBD 36297 2686 4 likely likely JJ 36297 2686 5 to to TO 36297 2686 6 render render VB 36297 2686 7 shell shell NN 36297 2686 8 - - HYPH 36297 2686 9 fire fire NN 36297 2686 10 and and CC 36297 2686 11 observations observation NNS 36297 2686 12 inaccurate inaccurate JJ 36297 2686 13 . . . 36297 2687 1 This this DT 36297 2687 2 mode mode NN 36297 2687 3 of of IN 36297 2687 4 defense defense NN 36297 2687 5 is be VBZ 36297 2687 6 obviously obviously RB 36297 2687 7 best best RB 36297 2687 8 suited suit VBN 36297 2687 9 to to IN 36297 2687 10 unarmed unarmed JJ 36297 2687 11 vessels vessel NNS 36297 2687 12 . . . 36297 2688 1 In in IN 36297 2688 2 the the DT 36297 2688 3 use use NN 36297 2688 4 of of IN 36297 2688 5 smoke smoke NN 36297 2688 6 - - HYPH 36297 2688 7 boxes box NNS 36297 2688 8 the the DT 36297 2688 9 direction direction NN 36297 2688 10 and and CC 36297 2688 11 velocity velocity NN 36297 2688 12 of of IN 36297 2688 13 the the DT 36297 2688 14 wind wind NN 36297 2688 15 must must MD 36297 2688 16 be be VB 36297 2688 17 considered consider VBN 36297 2688 18 . . . 36297 2689 1 The the DT 36297 2689 2 writer writer NN 36297 2689 3 is be VBZ 36297 2689 4 unacquainted unacquainte VBN 36297 2689 5 with with IN 36297 2689 6 any any DT 36297 2689 7 attempts attempt NNS 36297 2689 8 made make VBN 36297 2689 9 to to TO 36297 2689 10 camouflage camouflage VB 36297 2689 11 submarines submarine NNS 36297 2689 12 under under IN 36297 2689 13 water water NN 36297 2689 14 , , , 36297 2689 15 but but CC 36297 2689 16 that that IN 36297 2689 17 this this DT 36297 2689 18 can can MD 36297 2689 19 be be VB 36297 2689 20 done do VBN 36297 2689 21 is be VBZ 36297 2689 22 evident evident JJ 36297 2689 23 from from IN 36297 2689 24 aerial aerial JJ 36297 2689 25 observations observation NNS 36297 2689 26 . . . 36297 2690 1 When when WRB 36297 2690 2 looking look VBG 36297 2690 3 over over IN 36297 2690 4 the the DT 36297 2690 5 water water NN 36297 2690 6 from from IN 36297 2690 7 a a DT 36297 2690 8 point point NN 36297 2690 9 not not RB 36297 2690 10 far far RB 36297 2690 11 above above IN 36297 2690 12 it -PRON- PRP 36297 2690 13 , , , 36297 2690 14 as as IN 36297 2690 15 on on IN 36297 2690 16 a a DT 36297 2690 17 pier pier NN 36297 2690 18 , , , 36297 2690 19 we -PRON- PRP 36297 2690 20 are be VBP 36297 2690 21 unable unable JJ 36297 2690 22 to to TO 36297 2690 23 see see VB 36297 2690 24 into into IN 36297 2690 25 the the DT 36297 2690 26 water water NN 36297 2690 27 except except IN 36297 2690 28 at at IN 36297 2690 29 points point NNS 36297 2690 30 near near IN 36297 2690 31 us -PRON- PRP 36297 2690 32 where where WRB 36297 2690 33 our -PRON- PRP$ 36297 2690 34 direction direction NN 36297 2690 35 of of IN 36297 2690 36 vision vision NN 36297 2690 37 is be VBZ 36297 2690 38 not not RB 36297 2690 39 very very RB 36297 2690 40 oblique oblique JJ 36297 2690 41 to to IN 36297 2690 42 the the DT 36297 2690 43 surface surface NN 36297 2690 44 of of IN 36297 2690 45 the the DT 36297 2690 46 water water NN 36297 2690 47 . . . 36297 2691 1 The the DT 36297 2691 2 brightness brightness NN 36297 2691 3 of of IN 36297 2691 4 the the DT 36297 2691 5 surface surface NN 36297 2691 6 of of IN 36297 2691 7 water water NN 36297 2691 8 is be VBZ 36297 2691 9 due due JJ 36297 2691 10 to to IN 36297 2691 11 mirrored mirror VBN 36297 2691 12 sky sky NN 36297 2691 13 and and CC 36297 2691 14 clouds cloud NNS 36297 2691 15 ordinarily ordinarily RB 36297 2691 16 . . . 36297 2692 1 For for IN 36297 2692 2 a a DT 36297 2692 3 perfectly perfectly RB 36297 2692 4 smooth smooth JJ 36297 2692 5 surface surface NN 36297 2692 6 of of IN 36297 2692 7 water water NN 36297 2692 8 , , , 36297 2692 9 the the DT 36297 2692 10 reflection reflection NN 36297 2692 11 factor factor NN 36297 2692 12 is be VBZ 36297 2692 13 2 2 CD 36297 2692 14 per per IN 36297 2692 15 cent cent NN 36297 2692 16 for for IN 36297 2692 17 perpendicular perpendicular JJ 36297 2692 18 incidence incidence NN 36297 2692 19 . . . 36297 2693 1 This this DT 36297 2693 2 increases increase VBZ 36297 2693 3 only only RB 36297 2693 4 slightly slightly RB 36297 2693 5 as as IN 36297 2693 6 the the DT 36297 2693 7 obliquity obliquity NN 36297 2693 8 increases increase VBZ 36297 2693 9 to to IN 36297 2693 10 an an DT 36297 2693 11 angle angle NN 36297 2693 12 of of IN 36297 2693 13 about about RB 36297 2693 14 60 60 CD 36297 2693 15 degrees degree NNS 36297 2693 16 . . . 36297 2694 1 From from IN 36297 2694 2 this this DT 36297 2694 3 point point NN 36297 2694 4 the the DT 36297 2694 5 reflection reflection NN 36297 2694 6 - - HYPH 36297 2694 7 factor factor NN 36297 2694 8 of of IN 36297 2694 9 the the DT 36297 2694 10 surface surface NN 36297 2694 11 rapidly rapidly RB 36297 2694 12 increases increase VBZ 36297 2694 13 , , , 36297 2694 14 becoming become VBG 36297 2694 15 100 100 CD 36297 2694 16 per per NN 36297 2694 17 cent cent NN 36297 2694 18 at at IN 36297 2694 19 90 90 CD 36297 2694 20 degrees degree NNS 36297 2694 21 incidence incidence NN 36297 2694 22 . . . 36297 2695 1 This this DT 36297 2695 2 accounts account VBZ 36297 2695 3 for for IN 36297 2695 4 the the DT 36297 2695 5 ease ease NN 36297 2695 6 with with IN 36297 2695 7 which which WDT 36297 2695 8 we -PRON- PRP 36297 2695 9 can can MD 36297 2695 10 see see VB 36297 2695 11 into into IN 36297 2695 12 the the DT 36297 2695 13 water water NN 36297 2695 14 from from IN 36297 2695 15 a a DT 36297 2695 16 position position NN 36297 2695 17 directly directly RB 36297 2695 18 overhead overhead RB 36297 2695 19 and and CC 36297 2695 20 hence hence RB 36297 2695 21 the the DT 36297 2695 22 airplane airplane NN 36297 2695 23 has have VBZ 36297 2695 24 been be VBN 36297 2695 25 an an DT 36297 2695 26 effective effective JJ 36297 2695 27 hunter hunter NN 36297 2695 28 of of IN 36297 2695 29 submerged submerged JJ 36297 2695 30 submarines submarine NNS 36297 2695 31 . . . 36297 2696 1 The the DT 36297 2696 2 depth depth NN 36297 2696 3 at at IN 36297 2696 4 which which WDT 36297 2696 5 an an DT 36297 2696 6 object object NN 36297 2696 7 can can MD 36297 2696 8 be be VB 36297 2696 9 seen see VBN 36297 2696 10 in in IN 36297 2696 11 water water NN 36297 2696 12 depends depend VBZ 36297 2696 13 , , , 36297 2696 14 of of IN 36297 2696 15 course course NN 36297 2696 16 , , , 36297 2696 17 upon upon IN 36297 2696 18 its -PRON- PRP$ 36297 2696 19 clarity clarity NN 36297 2696 20 . . . 36297 2697 1 It -PRON- PRP 36297 2697 2 may may MD 36297 2697 3 be be VB 36297 2697 4 surprising surprising JJ 36297 2697 5 to to IN 36297 2697 6 many many JJ 36297 2697 7 to to TO 36297 2697 8 learn learn VB 36297 2697 9 that that IN 36297 2697 10 the the DT 36297 2697 11 brightness brightness NN 36297 2697 12 of of IN 36297 2697 13 water water NN 36297 2697 14 , , , 36297 2697 15 such such JJ 36297 2697 16 as as IN 36297 2697 17 rivers river NNS 36297 2697 18 , , , 36297 2697 19 bays bay NNS 36297 2697 20 , , , 36297 2697 21 and and CC 36297 2697 22 oceans ocean NNS 36297 2697 23 , , , 36297 2697 24 as as IN 36297 2697 25 viewed view VBN 36297 2697 26 perpendicularly perpendicularly RB 36297 2697 27 to to IN 36297 2697 28 its -PRON- PRP$ 36297 2697 29 surface surface NN 36297 2697 30 , , , 36297 2697 31 is be VBZ 36297 2697 32 largely largely RB 36297 2697 33 due due JJ 36297 2697 34 to to IN 36297 2697 35 light light NN 36297 2697 36 diffused diffuse VBN 36297 2697 37 within within IN 36297 2697 38 it -PRON- PRP 36297 2697 39 . . . 36297 2698 1 This this DT 36297 2698 2 point point NN 36297 2698 3 became become VBD 36297 2698 4 strikingly strikingly RB 36297 2698 5 evident evident JJ 36297 2698 6 during during IN 36297 2698 7 the the DT 36297 2698 8 progress progress NN 36297 2698 9 of of IN 36297 2698 10 work work NN 36297 2698 11 in in IN 36297 2698 12 aerial aerial JJ 36297 2698 13 photometry photometry NN 36297 2698 14 . . . 36297 2699 1 A a DT 36297 2699 2 submerged submerged JJ 36297 2699 3 submarine submarine NN 36297 2699 4 may may MD 36297 2699 5 be be VB 36297 2699 6 invisible invisible JJ 36297 2699 7 for for IN 36297 2699 8 two two CD 36297 2699 9 reasons reason NNS 36297 2699 10 : : : 36297 2699 11 ( ( -LRB- 36297 2699 12 1 1 LS 36297 2699 13 ) ) -RRB- 36297 2699 14 It -PRON- PRP 36297 2699 15 may may MD 36297 2699 16 be be VB 36297 2699 17 deep deep JJ 36297 2699 18 enough enough RB 36297 2699 19 to to TO 36297 2699 20 be be VB 36297 2699 21 effectively effectively RB 36297 2699 22 veiled veil VBN 36297 2699 23 by by IN 36297 2699 24 the the DT 36297 2699 25 luminosity luminosity NN 36297 2699 26 of of IN 36297 2699 27 the the DT 36297 2699 28 mass mass NN 36297 2699 29 of of IN 36297 2699 30 water water NN 36297 2699 31 above above IN 36297 2699 32 it -PRON- PRP 36297 2699 33 ( ( -LRB- 36297 2699 34 including include VBG 36297 2699 35 the the DT 36297 2699 36 surface surface NN 36297 2699 37 brightness brightness NN 36297 2699 38 ) ) -RRB- 36297 2699 39 or or CC 36297 2699 40 , , , 36297 2699 41 ( ( -LRB- 36297 2699 42 2 2 LS 36297 2699 43 ) ) -RRB- 36297 2699 44 It -PRON- PRP 36297 2699 45 may may MD 36297 2699 46 be be VB 36297 2699 47 of of IN 36297 2699 48 the the DT 36297 2699 49 proper proper JJ 36297 2699 50 brightness brightness NN 36297 2699 51 and and CC 36297 2699 52 color color NN 36297 2699 53 to to TO 36297 2699 54 simulate simulate VB 36297 2699 55 the the DT 36297 2699 56 brightness brightness NN 36297 2699 57 and and CC 36297 2699 58 color color NN 36297 2699 59 of of IN 36297 2699 60 the the DT 36297 2699 61 water water NN 36297 2699 62 . . . 36297 2700 1 It -PRON- PRP 36297 2700 2 is be VBZ 36297 2700 3 obvious obvious JJ 36297 2700 4 that that IN 36297 2700 5 if if IN 36297 2700 6 it -PRON- PRP 36297 2700 7 were be VBD 36297 2700 8 white white JJ 36297 2700 9 it -PRON- PRP 36297 2700 10 would would MD 36297 2700 11 have have VB 36297 2700 12 to to TO 36297 2700 13 attain attain VB 36297 2700 14 concealment concealment JJ 36297 2700 15 by by IN 36297 2700 16 submerging submerge VBG 36297 2700 17 deeply deeply RB 36297 2700 18 . . . 36297 2701 1 If if IN 36297 2701 2 it -PRON- PRP 36297 2701 3 were be VBD 36297 2701 4 a a DT 36297 2701 5 fairly fairly RB 36297 2701 6 dark dark JJ 36297 2701 7 greenish greenish NN 36297 2701 8 - - HYPH 36297 2701 9 blue blue JJ 36297 2701 10 it -PRON- PRP 36297 2701 11 would would MD 36297 2701 12 be be VB 36297 2701 13 invisible invisible JJ 36297 2701 14 at at IN 36297 2701 15 very very RB 36297 2701 16 small small JJ 36297 2701 17 depths depth NNS 36297 2701 18 . . . 36297 2702 1 In in IN 36297 2702 2 fact fact NN 36297 2702 3 , , , 36297 2702 4 it -PRON- PRP 36297 2702 5 would would MD 36297 2702 6 be be VB 36297 2702 7 of of IN 36297 2702 8 very very RB 36297 2702 9 low low JJ 36297 2702 10 visibility visibility NN 36297 2702 11 just just RB 36297 2702 12 below below IN 36297 2702 13 the the DT 36297 2702 14 surface surface NN 36297 2702 15 of of IN 36297 2702 16 the the DT 36297 2702 17 water water NN 36297 2702 18 . . . 36297 2703 1 By by IN 36297 2703 2 the the DT 36297 2703 3 use use NN 36297 2703 4 of of IN 36297 2703 5 the the DT 36297 2703 6 writer writer NN 36297 2703 7 's 's POS 36297 2703 8 data datum NNS 36297 2703 9 on on IN 36297 2703 10 hues hue NNS 36297 2703 11 and and CC 36297 2703 12 reflection reflection NN 36297 2703 13 - - HYPH 36297 2703 14 factors factor NNS 36297 2703 15 of of IN 36297 2703 16 earth earth NN 36297 2703 17 and and CC 36297 2703 18 water water NN 36297 2703 19 areas area NNS 36297 2703 20 it -PRON- PRP 36297 2703 21 would would MD 36297 2703 22 be be VB 36297 2703 23 easy easy JJ 36297 2703 24 to to TO 36297 2703 25 camouflage camouflage VB 36297 2703 26 submarines submarine NNS 36297 2703 27 effectively effectively RB 36297 2703 28 from from IN 36297 2703 29 enemies enemy NNS 36297 2703 30 overhead overhead RB 36297 2703 31 . . . 36297 2704 1 The the DT 36297 2704 2 visibility visibility NN 36297 2704 3 of of IN 36297 2704 4 submarines submarine NNS 36297 2704 5 is be VBZ 36297 2704 6 well well RB 36297 2704 7 exemplified exemplify VBN 36297 2704 8 by by IN 36297 2704 9 viewing view VBG 36297 2704 10 large large JJ 36297 2704 11 fish fish NNS 36297 2704 12 such such JJ 36297 2704 13 as as IN 36297 2704 14 sharks shark NNS 36297 2704 15 from from IN 36297 2704 16 airships airship NNS 36297 2704 17 at at IN 36297 2704 18 low low JJ 36297 2704 19 altitudes altitude NNS 36297 2704 20 . . . 36297 2705 1 They -PRON- PRP 36297 2705 2 appear appear VBP 36297 2705 3 as as IN 36297 2705 4 miniature miniature JJ 36297 2705 5 submarines submarine NNS 36297 2705 6 dark dark JJ 36297 2705 7 gray gray NN 36297 2705 8 or or CC 36297 2705 9 almost almost RB 36297 2705 10 black black JJ 36297 2705 11 amid amid IN 36297 2705 12 greenish greenish JJ 36297 2705 13 - - HYPH 36297 2705 14 blue blue JJ 36297 2705 15 surroundings surrounding NNS 36297 2705 16 . . . 36297 2706 1 Incidentally incidentally RB 36297 2706 2 , , , 36297 2706 3 the the DT 36297 2706 4 color color NN 36297 2706 5 of of IN 36297 2706 6 water water NN 36297 2706 7 varies vary VBZ 36297 2706 8 considerably considerably RB 36297 2706 9 from from IN 36297 2706 10 the the DT 36297 2706 11 dirty dirty JJ 36297 2706 12 yellowish yellowish JJ 36297 2706 13 - - HYPH 36297 2706 14 green green NN 36297 2706 15 of of IN 36297 2706 16 shallow shallow JJ 36297 2706 17 inland inland NN 36297 2706 18 waters water NNS 36297 2706 19 containing contain VBG 36297 2706 20 much much RB 36297 2706 21 suspended suspend VBN 36297 2706 22 matter matter NN 36297 2706 23 to to IN 36297 2706 24 the the DT 36297 2706 25 greenish greenish NN 36297 2706 26 - - HYPH 36297 2706 27 blue blue JJ 36297 2706 28 of of IN 36297 2706 29 deep deep JJ 36297 2706 30 clear clear JJ 36297 2706 31 ocean ocean NN 36297 2706 32 waters water NNS 36297 2706 33 . . . 36297 2707 1 The the DT 36297 2707 2 latter latter JJ 36297 2707 3 as as IN 36297 2707 4 viewed view VBN 36297 2707 5 vertically vertically RB 36297 2707 6 are be VBP 36297 2707 7 about about RB 36297 2707 8 one one CD 36297 2707 9 - - HYPH 36297 2707 10 half half NN 36297 2707 11 the the DT 36297 2707 12 brightness brightness NN 36297 2707 13 of of IN 36297 2707 14 the the DT 36297 2707 15 former former JJ 36297 2707 16 under under IN 36297 2707 17 the the DT 36297 2707 18 same same JJ 36297 2707 19 conditions condition NNS 36297 2707 20 and and CC 36297 2707 21 are be VBP 36297 2707 22 decidedly decidedly RB 36297 2707 23 bluer bluer JJ 36297 2707 24 . . . 36297 2708 1 _ _ NNP 36297 2708 2 The the DT 36297 2708 3 Visibility visibility NN 36297 2708 4 of of IN 36297 2708 5 Airplanes._--In airplanes._--in NN 36297 2708 6 the the DT 36297 2708 7 Great Great NNP 36297 2708 8 War War NNP 36297 2708 9 the the DT 36297 2708 10 airplane airplane NN 36297 2708 11 made make VBD 36297 2708 12 its -PRON- PRP$ 36297 2708 13 début début NN 36297 2708 14 in in IN 36297 2708 15 warfare warfare NN 36297 2708 16 and and CC 36297 2708 17 in in IN 36297 2708 18 a a DT 36297 2708 19 short short JJ 36297 2708 20 time time NN 36297 2708 21 made make VBD 36297 2708 22 a a DT 36297 2708 23 wonderful wonderful JJ 36297 2708 24 record record NN 36297 2708 25 , , , 36297 2708 26 yet yet CC 36297 2708 27 when when WRB 36297 2708 28 hostilities hostility NNS 36297 2708 29 ceased cease VBD 36297 2708 30 aerial aerial JJ 36297 2708 31 camouflage camouflage NN 36297 2708 32 had have VBD 36297 2708 33 not not RB 36297 2708 34 been be VBN 36297 2708 35 put put VBN 36297 2708 36 on on IN 36297 2708 37 a a DT 36297 2708 38 scientific scientific JJ 36297 2708 39 basis basis NN 36297 2708 40 . . . 36297 2709 1 No no DT 36297 2709 2 nation nation NN 36297 2709 3 had have VBD 36297 2709 4 developed develop VBN 36297 2709 5 this this DT 36297 2709 6 general general JJ 36297 2709 7 aspect aspect NN 36297 2709 8 of of IN 36297 2709 9 camouflage camouflage NN 36297 2709 10 systematically systematically RB 36297 2709 11 or or CC 36297 2709 12 to to IN 36297 2709 13 an an DT 36297 2709 14 extent extent NN 36297 2709 15 comparable comparable JJ 36297 2709 16 with with IN 36297 2709 17 the the DT 36297 2709 18 developments development NNS 36297 2709 19 on on IN 36297 2709 20 land land NN 36297 2709 21 and and CC 36297 2709 22 sea sea NN 36297 2709 23 . . . 36297 2710 1 One one CD 36297 2710 2 of of IN 36297 2710 3 the the DT 36297 2710 4 chief chief JJ 36297 2710 5 difficulties difficulty NNS 36297 2710 6 was be VBD 36297 2710 7 that that IN 36297 2710 8 scientific scientific JJ 36297 2710 9 data datum NNS 36297 2710 10 which which WDT 36297 2710 11 were be VBD 36297 2710 12 applicable applicable JJ 36297 2710 13 were be VBD 36297 2710 14 lacking lack VBG 36297 2710 15 . . . 36297 2711 1 During during IN 36297 2711 2 the the DT 36297 2711 3 author author NN 36297 2711 4 's 's POS 36297 2711 5 activities activity NNS 36297 2711 6 as as IN 36297 2711 7 Chairman Chairman NNP 36297 2711 8 of of IN 36297 2711 9 the the DT 36297 2711 10 Committee Committee NNP 36297 2711 11 on on IN 36297 2711 12 Camouflage Camouflage NNP 36297 2711 13 of of IN 36297 2711 14 the the DT 36297 2711 15 National National NNP 36297 2711 16 Research Research NNP 36297 2711 17 Council Council NNP 36297 2711 18 he -PRON- PRP 36297 2711 19 completed complete VBD 36297 2711 20 an an DT 36297 2711 21 extensive extensive JJ 36297 2711 22 investigation[12 investigation[12 NN 36297 2711 23 ] ] -RRB- 36297 2711 24 of of IN 36297 2711 25 the the DT 36297 2711 26 fundamentals fundamental NNS 36297 2711 27 upon upon IN 36297 2711 28 which which WDT 36297 2711 29 the the DT 36297 2711 30 attainment attainment NN 36297 2711 31 of of IN 36297 2711 32 low low JJ 36297 2711 33 visibility visibility NN 36297 2711 34 for for IN 36297 2711 35 airplanes airplane NNS 36297 2711 36 must must MD 36297 2711 37 be be VB 36297 2711 38 based base VBN 36297 2711 39 . . . 36297 2712 1 Solutions solution NNS 36297 2712 2 of of IN 36297 2712 3 the the DT 36297 2712 4 problems problem NNS 36297 2712 5 encountered encounter VBN 36297 2712 6 in in IN 36297 2712 7 rendering render VBG 36297 2712 8 airplanes airplane NNS 36297 2712 9 of of IN 36297 2712 10 low low JJ 36297 2712 11 visibility visibility NN 36297 2712 12 resulted result VBD 36297 2712 13 and and CC 36297 2712 14 various various JJ 36297 2712 15 recommendations recommendation NNS 36297 2712 16 were be VBD 36297 2712 17 made make VBN 36297 2712 18 , , , 36297 2712 19 but but CC 36297 2712 20 the the DT 36297 2712 21 experiences experience NNS 36297 2712 22 and and CC 36297 2712 23 data datum NNS 36297 2712 24 will will MD 36297 2712 25 be be VB 36297 2712 26 drawn draw VBN 36297 2712 27 upon upon IN 36297 2712 28 here here RB 36297 2712 29 only only RB 36297 2712 30 in in IN 36297 2712 31 a a DT 36297 2712 32 general general JJ 36297 2712 33 way way NN 36297 2712 34 . . . 36297 2713 1 In in IN 36297 2713 2 this this DT 36297 2713 3 general general JJ 36297 2713 4 review review NN 36297 2713 5 details detail NNS 36297 2713 6 would would MD 36297 2713 7 consume consume VB 36297 2713 8 too too RB 36297 2713 9 much much JJ 36297 2713 10 space space NN 36297 2713 11 , , , 36297 2713 12 for for IN 36297 2713 13 the the DT 36297 2713 14 intention intention NN 36297 2713 15 has have VBZ 36297 2713 16 been be VBN 36297 2713 17 to to TO 36297 2713 18 present present VB 36297 2713 19 a a DT 36297 2713 20 broad broad JJ 36297 2713 21 view view NN 36297 2713 22 of of IN 36297 2713 23 the the DT 36297 2713 24 subject subject NN 36297 2713 25 of of IN 36297 2713 26 camouflage camouflage NN 36297 2713 27 . . . 36297 2714 1 The the DT 36297 2714 2 visibility visibility NN 36297 2714 3 of of IN 36297 2714 4 airplanes airplane NNS 36297 2714 5 presents present VBZ 36297 2714 6 some some DT 36297 2714 7 of of IN 36297 2714 8 the the DT 36297 2714 9 most most RBS 36297 2714 10 interesting interesting JJ 36297 2714 11 problems problem NNS 36297 2714 12 to to TO 36297 2714 13 be be VB 36297 2714 14 found find VBN 36297 2714 15 in in IN 36297 2714 16 the the DT 36297 2714 17 development development NN 36297 2714 18 of of IN 36297 2714 19 the the DT 36297 2714 20 scientific scientific JJ 36297 2714 21 basis basis NN 36297 2714 22 for for IN 36297 2714 23 camouflage camouflage NN 36297 2714 24 . . . 36297 2715 1 The the DT 36297 2715 2 general general JJ 36297 2715 3 problem problem NN 36297 2715 4 may may MD 36297 2715 5 be be VB 36297 2715 6 subdivided subdivide VBN 36297 2715 7 according accord VBG 36297 2715 8 to to IN 36297 2715 9 the the DT 36297 2715 10 type type NN 36297 2715 11 of of IN 36297 2715 12 airplane airplane NN 36297 2715 13 , , , 36297 2715 14 its -PRON- PRP$ 36297 2715 15 field field NN 36297 2715 16 of of IN 36297 2715 17 operation operation NN 36297 2715 18 , , , 36297 2715 19 and and CC 36297 2715 20 its -PRON- PRP$ 36297 2715 21 activity activity NN 36297 2715 22 . . . 36297 2716 1 For for IN 36297 2716 2 example example NN 36297 2716 3 , , , 36297 2716 4 patrol patrol NN 36297 2716 5 craft craft NN 36297 2716 6 which which WDT 36297 2716 7 fly fly VBP 36297 2716 8 low low RB 36297 2716 9 over over IN 36297 2716 10 our -PRON- PRP$ 36297 2716 11 own own JJ 36297 2716 12 lines line NNS 36297 2716 13 would would MD 36297 2716 14 primarily primarily RB 36297 2716 15 be be VB 36297 2716 16 camouflaged camouflage VBN 36297 2716 17 for for IN 36297 2716 18 low low JJ 36297 2716 19 visibility visibility NN 36297 2716 20 as as IN 36297 2716 21 viewed view VBN 36297 2716 22 by by IN 36297 2716 23 enemies enemy NNS 36297 2716 24 above above RB 36297 2716 25 . . . 36297 2717 1 ( ( -LRB- 36297 2717 2 See see VB 36297 2717 3 Fig fig NN 36297 2717 4 . . . 36297 2718 1 99 99 CD 36297 2718 2 . . . 36297 2718 3 ) ) -RRB- 36297 2719 1 High high JJ 36297 2719 2 - - HYPH 36297 2719 3 flying flying NN 36297 2719 4 craft craft NN 36297 2719 5 would would MD 36297 2719 6 be be VB 36297 2719 7 rendered render VBN 36297 2719 8 of of IN 36297 2719 9 low low JJ 36297 2719 10 visibility visibility NN 36297 2719 11 as as IN 36297 2719 12 viewed view VBN 36297 2719 13 primarily primarily RB 36297 2719 14 by by IN 36297 2719 15 the the DT 36297 2719 16 enemy enemy NN 36297 2719 17 below below RB 36297 2719 18 . . . 36297 2720 1 Airplanes airplane NNS 36297 2720 2 for for IN 36297 2720 3 night night NN 36297 2720 4 use use NN 36297 2720 5 present present JJ 36297 2720 6 other other JJ 36297 2720 7 problems problem NNS 36297 2720 8 and and CC 36297 2720 9 the the DT 36297 2720 10 visibility visibility NN 36297 2720 11 of of IN 36297 2720 12 seaplanes seaplane NNS 36297 2720 13 is be VBZ 36297 2720 14 a a DT 36297 2720 15 distinct distinct JJ 36297 2720 16 problem problem NN 36297 2720 17 , , , 36297 2720 18 owing owe VBG 36297 2720 19 to to IN 36297 2720 20 the the DT 36297 2720 21 fact fact NN 36297 2720 22 that that IN 36297 2720 23 the the DT 36297 2720 24 important important JJ 36297 2720 25 background background NN 36297 2720 26 is be VBZ 36297 2720 27 the the DT 36297 2720 28 water water NN 36297 2720 29 , , , 36297 2720 30 because because IN 36297 2720 31 seaplanes seaplane NNS 36297 2720 32 are be VBP 36297 2720 33 not not RB 36297 2720 34 ordinarily ordinarily RB 36297 2720 35 high high JJ 36297 2720 36 - - HYPH 36297 2720 37 flying fly VBG 36297 2720 38 craft craft NN 36297 2720 39 . . . 36297 2721 1 In in IN 36297 2721 2 all all PDT 36297 2721 3 these these DT 36297 2721 4 considerations consideration NNS 36297 2721 5 it -PRON- PRP 36297 2721 6 will will MD 36297 2721 7 be be VB 36297 2721 8 noted note VBN 36297 2721 9 that that IN 36297 2721 10 the the DT 36297 2721 11 activity activity NN 36297 2721 12 of of IN 36297 2721 13 the the DT 36297 2721 14 airplanes airplane NNS 36297 2721 15 is be VBZ 36297 2721 16 of of IN 36297 2721 17 primary primary JJ 36297 2721 18 importance importance NN 36297 2721 19 , , , 36297 2721 20 because because IN 36297 2721 21 it -PRON- PRP 36297 2721 22 determines determine VBZ 36297 2721 23 the the DT 36297 2721 24 lines line NNS 36297 2721 25 of of IN 36297 2721 26 procedure procedure NN 36297 2721 27 in in IN 36297 2721 28 rendering render VBG 36297 2721 29 the the DT 36297 2721 30 craft craft NN 36297 2721 31 of of IN 36297 2721 32 low low JJ 36297 2721 33 visibility visibility NN 36297 2721 34 . . . 36297 2722 1 This this DT 36297 2722 2 aspect aspect NN 36297 2722 3 is be VBZ 36297 2722 4 too too RB 36297 2722 5 complicated complicated JJ 36297 2722 6 to to TO 36297 2722 7 discuss discuss VB 36297 2722 8 thoroughly thoroughly RB 36297 2722 9 in in IN 36297 2722 10 a a DT 36297 2722 11 brief brief JJ 36297 2722 12 résumé résumé NN 36297 2722 13 . . . 36297 2723 1 [ [ -LRB- 36297 2723 2 Illustration illustration NN 36297 2723 3 : : : 36297 2723 4 Fig Fig NNP 36297 2723 5 . . . 36297 2724 1 99.--Representative 99.--representative CD 36297 2724 2 earth earth NN 36297 2724 3 backgrounds background VBZ 36297 2724 4 for for IN 36297 2724 5 an an DT 36297 2724 6 airplane airplane NN 36297 2724 7 ( ( -LRB- 36297 2724 8 uncamouflaged uncamouflaged JJ 36297 2724 9 ) ) -RRB- 36297 2724 10 as as IN 36297 2724 11 viewed view VBN 36297 2724 12 from from IN 36297 2724 13 above above RB 36297 2724 14 . . . 36297 2724 15 ] ] -RRB- 36297 2725 1 The the DT 36297 2725 2 same same JJ 36297 2725 3 fundamentals fundamental NNS 36297 2725 4 of of IN 36297 2725 5 light light NN 36297 2725 6 , , , 36297 2725 7 color color NN 36297 2725 8 , , , 36297 2725 9 and and CC 36297 2725 10 vision vision NN 36297 2725 11 apply apply VB 36297 2725 12 in in IN 36297 2725 13 this this DT 36297 2725 14 field field NN 36297 2725 15 as as IN 36297 2725 16 in in IN 36297 2725 17 other other JJ 36297 2725 18 fields field NNS 36297 2725 19 of of IN 36297 2725 20 camouflage camouflage NN 36297 2725 21 , , , 36297 2725 22 but but CC 36297 2725 23 different different JJ 36297 2725 24 data datum NNS 36297 2725 25 are be VBP 36297 2725 26 required require VBN 36297 2725 27 . . . 36297 2726 1 When when WRB 36297 2726 2 viewing view VBG 36297 2726 3 aircraft aircraft NN 36297 2726 4 from from IN 36297 2726 5 above above RB 36297 2726 6 , , , 36297 2726 7 the the DT 36297 2726 8 earth earth NN 36297 2726 9 is be VBZ 36297 2726 10 the the DT 36297 2726 11 background background NN 36297 2726 12 of of IN 36297 2726 13 most most JJS 36297 2726 14 importance importance NN 36297 2726 15 . . . 36297 2727 1 Cumulus Cumulus NNP 36297 2727 2 clouds cloud NNS 36297 2727 3 on on IN 36297 2727 4 sunny sunny JJ 36297 2727 5 days day NNS 36297 2727 6 are be VBP 36297 2727 7 generally generally RB 36297 2727 8 at at IN 36297 2727 9 altitudes altitude NNS 36297 2727 10 of of IN 36297 2727 11 4000 4000 CD 36297 2727 12 to to IN 36297 2727 13 7000 7000 CD 36297 2727 14 feet foot NNS 36297 2727 15 . . . 36297 2728 1 Clouds cloud NNS 36297 2728 2 are be VBP 36297 2728 3 not not RB 36297 2728 4 always always RB 36297 2728 5 present present JJ 36297 2728 6 and and CC 36297 2728 7 besides besides IN 36297 2728 8 they -PRON- PRP 36297 2728 9 are be VBP 36297 2728 10 of of IN 36297 2728 11 such such PDT 36297 2728 12 a a DT 36297 2728 13 different different JJ 36297 2728 14 order order NN 36297 2728 15 of of IN 36297 2728 16 brightness brightness NN 36297 2728 17 from from IN 36297 2728 18 that that DT 36297 2728 19 of of IN 36297 2728 20 the the DT 36297 2728 21 earth earth NN 36297 2728 22 that that WDT 36297 2728 23 they -PRON- PRP 36297 2728 24 can can MD 36297 2728 25 not not RB 36297 2728 26 be be VB 36297 2728 27 considered consider VBN 36297 2728 28 in in IN 36297 2728 29 camouflage camouflage NN 36297 2728 30 designed design VBN 36297 2728 31 for for IN 36297 2728 32 low low JJ 36297 2728 33 visibility visibility NN 36297 2728 34 from from IN 36297 2728 35 above above RB 36297 2728 36 . . . 36297 2729 1 In in IN 36297 2729 2 other other JJ 36297 2729 3 words word NNS 36297 2729 4 , , , 36297 2729 5 the the DT 36297 2729 6 compromise compromise NN 36297 2729 7 in in IN 36297 2729 8 this this DT 36297 2729 9 case case NN 36297 2729 10 is be VBZ 36297 2729 11 to to TO 36297 2729 12 accept accept VB 36297 2729 13 the the DT 36297 2729 14 earth earth NN 36297 2729 15 as as IN 36297 2729 16 a a DT 36297 2729 17 background background NN 36297 2729 18 and and CC 36297 2729 19 to to TO 36297 2729 20 work work VB 36297 2729 21 on on IN 36297 2729 22 this this DT 36297 2729 23 basis basis NN 36297 2729 24 . . . 36297 2730 1 We -PRON- PRP 36297 2730 2 are be VBP 36297 2730 3 confronted confront VBN 36297 2730 4 with with IN 36297 2730 5 seasonal seasonal JJ 36297 2730 6 changes change NNS 36297 2730 7 of of IN 36297 2730 8 landscape landscape NN 36297 2730 9 , , , 36297 2730 10 but but CC 36297 2730 11 inasmuch inasmuch JJ 36297 2730 12 as as IN 36297 2730 13 the the DT 36297 2730 14 summer summer NN 36297 2730 15 landscape landscape NN 36297 2730 16 was be VBD 36297 2730 17 of of IN 36297 2730 18 greatest great JJS 36297 2730 19 importance importance NN 36297 2730 20 generally generally RB 36297 2730 21 , , , 36297 2730 22 it -PRON- PRP 36297 2730 23 was be VBD 36297 2730 24 the the DT 36297 2730 25 dominating dominating JJ 36297 2730 26 factor factor NN 36297 2730 27 in in IN 36297 2730 28 considering consider VBG 36297 2730 29 low low JJ 36297 2730 30 visibility visibility NN 36297 2730 31 from from IN 36297 2730 32 above above RB 36297 2730 33 . . . 36297 2731 1 On on IN 36297 2731 2 looking look VBG 36297 2731 3 down down RP 36297 2731 4 upon upon IN 36297 2731 5 the the DT 36297 2731 6 earth earth NN 36297 2731 7 one one NN 36297 2731 8 is be VBZ 36297 2731 9 impressed impressed JJ 36297 2731 10 with with IN 36297 2731 11 the the DT 36297 2731 12 definite definite JJ 36297 2731 13 types type NNS 36297 2731 14 of of IN 36297 2731 15 areas area NNS 36297 2731 16 such such JJ 36297 2731 17 as as IN 36297 2731 18 cultivated cultivate VBN 36297 2731 19 fields field NNS 36297 2731 20 , , , 36297 2731 21 woods wood NNS 36297 2731 22 , , , 36297 2731 23 barren barren JJ 36297 2731 24 ground ground NN 36297 2731 25 and and CC 36297 2731 26 water water NN 36297 2731 27 . . . 36297 2732 1 Different different JJ 36297 2732 2 landscapes landscape NNS 36297 2732 3 contain contain VBP 36297 2732 4 these these DT 36297 2732 5 areas area NNS 36297 2732 6 in in IN 36297 2732 7 various various JJ 36297 2732 8 proportions proportion NNS 36297 2732 9 , , , 36297 2732 10 which which WDT 36297 2732 11 fact fact NN 36297 2732 12 must must MD 36297 2732 13 be be VB 36297 2732 14 considered consider VBN 36297 2732 15 . . . 36297 2733 1 Many many JJ 36297 2733 2 thousand thousand CD 36297 2733 3 determinations determination NNS 36297 2733 4 of of IN 36297 2733 5 reflection reflection NN 36297 2733 6 - - HYPH 36297 2733 7 factor factor NN 36297 2733 8 and and CC 36297 2733 9 of of IN 36297 2733 10 approximate approximate NNP 36297 2733 11 hue hue NNP 36297 2733 12 were be VBD 36297 2733 13 made make VBN 36297 2733 14 for for IN 36297 2733 15 these these DT 36297 2733 16 types type NNS 36297 2733 17 of of IN 36297 2733 18 areas area NNS 36297 2733 19 , , , 36297 2733 20 and and CC 36297 2733 21 upon upon IN 36297 2733 22 the the DT 36297 2733 23 mean mean JJ 36297 2733 24 values value NNS 36297 2733 25 camouflage camouflage NN 36297 2733 26 for for IN 36297 2733 27 low low JJ 36297 2733 28 visibility visibility NN 36297 2733 29 as as IN 36297 2733 30 viewed view VBN 36297 2733 31 from from IN 36297 2733 32 above above RB 36297 2733 33 was be VBD 36297 2733 34 developed develop VBN 36297 2733 35 . . . 36297 2734 1 A a DT 36297 2734 2 few few JJ 36297 2734 3 values value NNS 36297 2734 4 are be VBP 36297 2734 5 given give VBN 36297 2734 6 in in IN 36297 2734 7 the the DT 36297 2734 8 accompanying accompanying JJ 36297 2734 9 table table NN 36297 2734 10 , , , 36297 2734 11 but but CC 36297 2734 12 a a DT 36297 2734 13 more more RBR 36297 2734 14 comprehensive comprehensive JJ 36297 2734 15 presentation presentation NN 36297 2734 16 will will MD 36297 2734 17 be be VB 36297 2734 18 found find VBN 36297 2734 19 elsewhere elsewhere RB 36297 2734 20 . . . 36297 2735 1 [ [ -LRB- 36297 2735 2 12 12 CD 36297 2735 3 ] ] -RRB- 36297 2735 4 _ _ NNP 36297 2735 5 Mean Mean NNP 36297 2735 6 Reflection Reflection NNP 36297 2735 7 - - HYPH 36297 2735 8 Factors Factors NNP 36297 2735 9 _ _ NNP 36297 2735 10 ( ( -LRB- 36297 2735 11 From from IN 36297 2735 12 thousands thousand NNS 36297 2735 13 of of IN 36297 2735 14 measurements measurement NNS 36297 2735 15 made make VBN 36297 2735 16 by by IN 36297 2735 17 viewing view VBG 36297 2735 18 vertically vertically RB 36297 2735 19 downward downward RB 36297 2735 20 during during IN 36297 2735 21 summer summer NN 36297 2735 22 and and CC 36297 2735 23 fall fall VB 36297 2735 24 from from IN 36297 2735 25 various various JJ 36297 2735 26 altitudes altitude NNS 36297 2735 27 . . . 36297 2735 28 ) ) -RRB- 36297 2736 1 Per per IN 36297 2736 2 Cent Cent NNP 36297 2736 3 Woods Woods NNP 36297 2736 4 4.3 4.3 CD 36297 2736 5 Barren Barren NNP 36297 2736 6 ground ground NN 36297 2736 7 13.0 13.0 CD 36297 2736 8 Fields field NNS 36297 2736 9 ( ( -LRB- 36297 2736 10 grazing graze VBG 36297 2736 11 land land NN 36297 2736 12 and and CC 36297 2736 13 growing grow VBG 36297 2736 14 crops crop NNS 36297 2736 15 ) ) -RRB- 36297 2736 16 6.8 6.8 CD 36297 2736 17 Inland Inland NNP 36297 2736 18 water water NN 36297 2736 19 ( ( -LRB- 36297 2736 20 rivers river NNS 36297 2736 21 and and CC 36297 2736 22 bays bay NNS 36297 2736 23 ) ) -RRB- 36297 2736 24 6.8 6.8 CD 36297 2736 25 Deep deep JJ 36297 2736 26 ocean ocean NN 36297 2736 27 water water NN 36297 2736 28 3.5 3.5 CD 36297 2736 29 Dense dense JJ 36297 2736 30 clouds cloud NNS 36297 2736 31 78.0 78.0 CD 36297 2736 32 Wooded wooded JJ 36297 2736 33 areas area NNS 36297 2736 34 are be VBP 36297 2736 35 the the DT 36297 2736 36 darkest dark JJS 36297 2736 37 general general JJ 36297 2736 38 areas area NNS 36297 2736 39 in in IN 36297 2736 40 a a DT 36297 2736 41 landscape landscape NN 36297 2736 42 and and CC 36297 2736 43 possess possess VB 36297 2736 44 a a DT 36297 2736 45 very very RB 36297 2736 46 low low JJ 36297 2736 47 reflection reflection NN 36297 2736 48 - - HYPH 36297 2736 49 factor factor NN 36297 2736 50 . . . 36297 2737 1 From from IN 36297 2737 2 above above RB 36297 2737 3 one one NN 36297 2737 4 sees see VBZ 36297 2737 5 the the DT 36297 2737 6 deep deep JJ 36297 2737 7 shadows shadow NNS 36297 2737 8 interspersed intersperse VBN 36297 2737 9 among among IN 36297 2737 10 the the DT 36297 2737 11 highlights highlight NNS 36297 2737 12 . . . 36297 2738 1 These these DT 36297 2738 2 shadows shadow NNS 36297 2738 3 and and CC 36297 2738 4 the the DT 36297 2738 5 trapping trapping NN 36297 2738 6 of of IN 36297 2738 7 light light NN 36297 2738 8 are be VBP 36297 2738 9 largely largely RB 36297 2738 10 responsible responsible JJ 36297 2738 11 for for IN 36297 2738 12 the the DT 36297 2738 13 low low JJ 36297 2738 14 brightness brightness NN 36297 2738 15 or or CC 36297 2738 16 apparent apparent JJ 36297 2738 17 reflection reflection NN 36297 2738 18 - - HYPH 36297 2738 19 factor factor NN 36297 2738 20 . . . 36297 2739 1 This this DT 36297 2739 2 is be VBZ 36297 2739 3 best well RBS 36297 2739 4 illustrated illustrate VBN 36297 2739 5 by by IN 36297 2739 6 means mean NNS 36297 2739 7 of of IN 36297 2739 8 black black JJ 36297 2739 9 velvet velvet NNS 36297 2739 10 . . . 36297 2740 1 If if IN 36297 2740 2 a a DT 36297 2740 3 piece piece NN 36297 2740 4 of of IN 36297 2740 5 cardboard cardboard NN 36297 2740 6 is be VBZ 36297 2740 7 dyed dye VBN 36297 2740 8 with with IN 36297 2740 9 the the DT 36297 2740 10 same same JJ 36297 2740 11 black black JJ 36297 2740 12 dye dye NN 36297 2740 13 as as IN 36297 2740 14 that that DT 36297 2740 15 used use VBD 36297 2740 16 to to TO 36297 2740 17 dye dye VB 36297 2740 18 the the DT 36297 2740 19 velvet velvet NNS 36297 2740 20 , , , 36297 2740 21 it -PRON- PRP 36297 2740 22 will will MD 36297 2740 23 diffusely diffusely RB 36297 2740 24 reflect reflect VB 36297 2740 25 2 2 CD 36297 2740 26 or or CC 36297 2740 27 3 3 CD 36297 2740 28 per per NN 36297 2740 29 cent cent NN 36297 2740 30 of of IN 36297 2740 31 the the DT 36297 2740 32 incident incident NN 36297 2740 33 light light NN 36297 2740 34 , , , 36297 2740 35 but but CC 36297 2740 36 the the DT 36297 2740 37 black black JJ 36297 2740 38 velvet velvet NN 36297 2740 39 will will MD 36297 2740 40 reflect reflect VB 36297 2740 41 no no DT 36297 2740 42 more more JJR 36297 2740 43 than than IN 36297 2740 44 0.5 0.5 CD 36297 2740 45 per per IN 36297 2740 46 cent cent NN 36297 2740 47 . . . 36297 2741 1 The the DT 36297 2741 2 velvet velvet NN 36297 2741 3 fibers fiber NNS 36297 2741 4 provide provide VBP 36297 2741 5 many many JJ 36297 2741 6 light light JJ 36297 2741 7 traps trap NNS 36297 2741 8 and and CC 36297 2741 9 cast cast VBD 36297 2741 10 many many JJ 36297 2741 11 shadows shadow NNS 36297 2741 12 which which WDT 36297 2741 13 reduce reduce VBP 36297 2741 14 the the DT 36297 2741 15 relative relative JJ 36297 2741 16 brightness brightness NN 36297 2741 17 or or CC 36297 2741 18 reflection reflection NN 36297 2741 19 - - HYPH 36297 2741 20 factor factor NN 36297 2741 21 far far RB 36297 2741 22 below below IN 36297 2741 23 that that DT 36297 2741 24 of of IN 36297 2741 25 the the DT 36297 2741 26 flat flat JJ 36297 2741 27 cardboard cardboard NN 36297 2741 28 . . . 36297 2742 1 Cultivated cultivate VBN 36297 2742 2 fields field NNS 36297 2742 3 on on IN 36297 2742 4 which which WDT 36297 2742 5 there there EX 36297 2742 6 are be VBP 36297 2742 7 growing grow VBG 36297 2742 8 crops crop NNS 36297 2742 9 are be VBP 36297 2742 10 nearly nearly RB 36297 2742 11 twice twice RB 36297 2742 12 as as RB 36297 2742 13 bright bright JJ 36297 2742 14 as as IN 36297 2742 15 wooded wooded JJ 36297 2742 16 areas area NNS 36297 2742 17 , , , 36297 2742 18 depending depend VBG 36297 2742 19 , , , 36297 2742 20 of of IN 36297 2742 21 course course NN 36297 2742 22 , , , 36297 2742 23 upon upon IN 36297 2742 24 the the DT 36297 2742 25 denseness denseness NN 36297 2742 26 of of IN 36297 2742 27 the the DT 36297 2742 28 vegetation vegetation NN 36297 2742 29 . . . 36297 2743 1 Barren barren JJ 36297 2743 2 sunbaked sunbake VBN 36297 2743 3 lands land NNS 36297 2743 4 are be VBP 36297 2743 5 generally generally RB 36297 2743 6 the the DT 36297 2743 7 brightest brightest RBS 36297 2743 8 large large JJ 36297 2743 9 areas area NNS 36297 2743 10 in in IN 36297 2743 11 a a DT 36297 2743 12 landscape landscape NN 36297 2743 13 , , , 36297 2743 14 the the DT 36297 2743 15 brightness brightness NN 36297 2743 16 depending depend VBG 36297 2743 17 upon upon IN 36297 2743 18 the the DT 36297 2743 19 character character NN 36297 2743 20 of of IN 36297 2743 21 the the DT 36297 2743 22 soil soil NN 36297 2743 23 . . . 36297 2744 1 Wet wet JJ 36297 2744 2 soil soil NN 36297 2744 3 is be VBZ 36297 2744 4 darker dark JJR 36297 2744 5 than than IN 36297 2744 6 dry dry JJ 36297 2744 7 soil soil NN 36297 2744 8 , , , 36297 2744 9 owing owe VBG 36297 2744 10 to to IN 36297 2744 11 the the DT 36297 2744 12 fact fact NN 36297 2744 13 that that IN 36297 2744 14 the the DT 36297 2744 15 pores pore NNS 36297 2744 16 are be VBP 36297 2744 17 filled fill VBN 36297 2744 18 with with IN 36297 2744 19 water water NN 36297 2744 20 , , , 36297 2744 21 thus thus RB 36297 2744 22 reducing reduce VBG 36297 2744 23 the the DT 36297 2744 24 reflection reflection NN 36297 2744 25 - - HYPH 36297 2744 26 factor factor NN 36297 2744 27 of of IN 36297 2744 28 the the DT 36297 2744 29 small small JJ 36297 2744 30 particles particle NNS 36297 2744 31 of of IN 36297 2744 32 soil soil NN 36297 2744 33 . . . 36297 2745 1 A a DT 36297 2745 2 dry dry JJ 36297 2745 3 white white JJ 36297 2745 4 blotting blotting NN 36297 2745 5 paper paper NN 36297 2745 6 which which WDT 36297 2745 7 reflects reflect VBZ 36297 2745 8 75 75 CD 36297 2745 9 per per NN 36297 2745 10 cent cent NN 36297 2745 11 of of IN 36297 2745 12 the the DT 36297 2745 13 incident incident NN 36297 2745 14 light light NN 36297 2745 15 will will MD 36297 2745 16 reflect reflect VB 36297 2745 17 only only RB 36297 2745 18 about about RB 36297 2745 19 55 55 CD 36297 2745 20 per per NN 36297 2745 21 cent cent NN 36297 2745 22 when when WRB 36297 2745 23 wet wet JJ 36297 2745 24 . . . 36297 2746 1 Inland Inland NNP 36297 2746 2 waters water NNS 36297 2746 3 which which WDT 36297 2746 4 contain contain VBP 36297 2746 5 much much RB 36297 2746 6 suspended suspend VBN 36297 2746 7 matter matter NN 36297 2746 8 are be VBP 36297 2746 9 about about RB 36297 2746 10 as as RB 36297 2746 11 bright bright JJ 36297 2746 12 as as IN 36297 2746 13 grazing graze VBG 36297 2746 14 land land NN 36297 2746 15 and and CC 36297 2746 16 cultivated cultivate VBN 36297 2746 17 fields field NNS 36297 2746 18 . . . 36297 2747 1 Shallow shallow JJ 36297 2747 2 water water NN 36297 2747 3 partakes partake VBZ 36297 2747 4 somewhat somewhat RB 36297 2747 5 of of IN 36297 2747 6 the the DT 36297 2747 7 color color NN 36297 2747 8 and and CC 36297 2747 9 brightness brightness NN 36297 2747 10 of of IN 36297 2747 11 the the DT 36297 2747 12 bed bed NN 36297 2747 13 , , , 36297 2747 14 and and CC 36297 2747 15 deep deep JJ 36297 2747 16 ocean ocean NN 36297 2747 17 water water NN 36297 2747 18 is be VBZ 36297 2747 19 somewhat somewhat RB 36297 2747 20 darker dark JJR 36297 2747 21 than than IN 36297 2747 22 wooded wooded JJ 36297 2747 23 areas area NNS 36297 2747 24 . . . 36297 2748 1 Quiet quiet JJ 36297 2748 2 stagnant stagnant JJ 36297 2748 3 pools pool NNS 36297 2748 4 or or CC 36297 2748 5 small small JJ 36297 2748 6 lakes lake NNS 36297 2748 7 are be VBP 36297 2748 8 sometimes sometimes RB 36297 2748 9 exceedingly exceedingly RB 36297 2748 10 dark dark JJ 36297 2748 11 ; ; : 36297 2748 12 in in IN 36297 2748 13 fact fact NN 36297 2748 14 , , , 36297 2748 15 they -PRON- PRP 36297 2748 16 appear appear VBP 36297 2748 17 like like IN 36297 2748 18 pools pool NNS 36297 2748 19 of of IN 36297 2748 20 ink ink NN 36297 2748 21 , , , 36297 2748 22 owing owe VBG 36297 2748 23 to to IN 36297 2748 24 the the DT 36297 2748 25 fact fact NN 36297 2748 26 that that IN 36297 2748 27 their -PRON- PRP$ 36297 2748 28 brightness brightness NN 36297 2748 29 as as IN 36297 2748 30 viewed view VBN 36297 2748 31 vertically vertically RB 36297 2748 32 is be VBZ 36297 2748 33 almost almost RB 36297 2748 34 entirely entirely RB 36297 2748 35 due due JJ 36297 2748 36 to to IN 36297 2748 37 surface surface NN 36297 2748 38 reflection reflection NN 36297 2748 39 . . . 36297 2749 1 If if IN 36297 2749 2 it -PRON- PRP 36297 2749 3 is be VBZ 36297 2749 4 due due JJ 36297 2749 5 entirely entirely RB 36297 2749 6 to to IN 36297 2749 7 reflection reflection NN 36297 2749 8 at at IN 36297 2749 9 the the DT 36297 2749 10 surface surface NN 36297 2749 11 , , , 36297 2749 12 the the DT 36297 2749 13 brightness brightness NN 36297 2749 14 will will MD 36297 2749 15 be be VB 36297 2749 16 about about RB 36297 2749 17 2 2 CD 36297 2749 18 per per NN 36297 2749 19 cent cent NN 36297 2749 20 of of IN 36297 2749 21 the the DT 36297 2749 22 brightness brightness NN 36297 2749 23 of of IN 36297 2749 24 the the DT 36297 2749 25 zenith zenith NNP 36297 2749 26 sky sky NN 36297 2749 27 . . . 36297 2750 1 That that RB 36297 2750 2 is is RB 36297 2750 3 , , , 36297 2750 4 when when WRB 36297 2750 5 viewing view VBG 36297 2750 6 such such PDT 36297 2750 7 a a DT 36297 2750 8 body body NN 36297 2750 9 of of IN 36297 2750 10 water water NN 36297 2750 11 vertically vertically RB 36297 2750 12 one one PRP 36297 2750 13 sees see VBZ 36297 2750 14 an an DT 36297 2750 15 image image NN 36297 2750 16 of of IN 36297 2750 17 the the DT 36297 2750 18 zenith zenith NNP 36297 2750 19 sky sky NN 36297 2750 20 reduced reduce VBN 36297 2750 21 in in IN 36297 2750 22 brightness brightness NN 36297 2750 23 to to IN 36297 2750 24 about about RB 36297 2750 25 2 2 CD 36297 2750 26 per per NN 36297 2750 27 cent cent NN 36297 2750 28 . . . 36297 2751 1 The the DT 36297 2751 2 earth earth NN 36297 2751 3 patterns pattern NNS 36297 2751 4 were be VBD 36297 2751 5 extensively extensively RB 36297 2751 6 studied study VBN 36297 2751 7 with with IN 36297 2751 8 the the DT 36297 2751 9 result result NN 36297 2751 10 that that IN 36297 2751 11 definite definite JJ 36297 2751 12 conclusions conclusion NNS 36297 2751 13 were be VBD 36297 2751 14 formulated formulate VBN 36297 2751 15 pertaining pertain VBG 36297 2751 16 to to IN 36297 2751 17 the the DT 36297 2751 18 best good JJS 36297 2751 19 patterns pattern NNS 36297 2751 20 to to TO 36297 2751 21 be be VB 36297 2751 22 used use VBN 36297 2751 23 . . . 36297 2752 1 Although although IN 36297 2752 2 it -PRON- PRP 36297 2752 3 is be VBZ 36297 2752 4 out out IN 36297 2752 5 of of IN 36297 2752 6 the the DT 36297 2752 7 question question NN 36297 2752 8 to to TO 36297 2752 9 present present VB 36297 2752 10 a a DT 36297 2752 11 detailed detailed JJ 36297 2752 12 discussion discussion NN 36297 2752 13 of of IN 36297 2752 14 this this DT 36297 2752 15 important important JJ 36297 2752 16 phase phase NN 36297 2752 17 in in IN 36297 2752 18 this this DT 36297 2752 19 résumé résumé NN 36297 2752 20 , , , 36297 2752 21 attention attention NN 36297 2752 22 will will MD 36297 2752 23 be be VB 36297 2752 24 called call VBN 36297 2752 25 to to IN 36297 2752 26 the the DT 36297 2752 27 manner manner NN 36297 2752 28 in in IN 36297 2752 29 which which WDT 36297 2752 30 the the DT 36297 2752 31 earth earth NN 36297 2752 32 patterns pattern NNS 36297 2752 33 diminish diminish VBP 36297 2752 34 with with IN 36297 2752 35 increasing increase VBG 36297 2752 36 altitude altitude NN 36297 2752 37 . . . 36297 2753 1 The the DT 36297 2753 2 insert insert NN 36297 2753 3 in in IN 36297 2753 4 Fig Fig NNP 36297 2753 5 . . . 36297 2754 1 100 100 CD 36297 2754 2 shows show VBZ 36297 2754 3 the the DT 36297 2754 4 actual actual JJ 36297 2754 5 size size NN 36297 2754 6 of of IN 36297 2754 7 an an DT 36297 2754 8 image image NN 36297 2754 9 of of IN 36297 2754 10 a a DT 36297 2754 11 50-foot 50-foot CD 36297 2754 12 airplane airplane NN 36297 2754 13 from from IN 36297 2754 14 0 0 CD 36297 2754 15 to to IN 36297 2754 16 16,000 16,000 CD 36297 2754 17 feet foot NNS 36297 2754 18 below below IN 36297 2754 19 the the DT 36297 2754 20 observer observer NN 36297 2754 21 as as IN 36297 2754 22 compared compare VBN 36297 2754 23 with with IN 36297 2754 24 corresponding corresponding JJ 36297 2754 25 images image NNS 36297 2754 26 ( ( -LRB- 36297 2754 27 to to IN 36297 2754 28 the the DT 36297 2754 29 same same JJ 36297 2754 30 scale scale NN 36297 2754 31 ) ) -RRB- 36297 2754 32 of of IN 36297 2754 33 objects object NNS 36297 2754 34 and and CC 36297 2754 35 areas area NNS 36297 2754 36 on on IN 36297 2754 37 the the DT 36297 2754 38 earth earth NN 36297 2754 39 's 's POS 36297 2754 40 surface surface NN 36297 2754 41 10,000 10,000 CD 36297 2754 42 feet foot NNS 36297 2754 43 below below IN 36297 2754 44 the the DT 36297 2754 45 observer observer NN 36297 2754 46 . . . 36297 2755 1 For for IN 36297 2755 2 simplicity simplicity NN 36297 2755 3 assume assume VBP 36297 2755 4 a a DT 36297 2755 5 camera camera NN 36297 2755 6 lens lens NN 36297 2755 7 to to TO 36297 2755 8 have have VB 36297 2755 9 a a DT 36297 2755 10 focal focal JJ 36297 2755 11 length length NN 36297 2755 12 equal equal JJ 36297 2755 13 to to IN 36297 2755 14 10 10 CD 36297 2755 15 inches inch NNS 36297 2755 16 , , , 36297 2755 17 then then RB 36297 2755 18 the the DT 36297 2755 19 length length NN 36297 2755 20 _ _ NNP 36297 2755 21 x x NNP 36297 2755 22 _ _ NNP 36297 2755 23 of of IN 36297 2755 24 the the DT 36297 2755 25 image image NN 36297 2755 26 of of IN 36297 2755 27 an an DT 36297 2755 28 object object NN 36297 2755 29 100 100 CD 36297 2755 30 feet foot NNS 36297 2755 31 long long JJ 36297 2755 32 will will MD 36297 2755 33 be be VB 36297 2755 34 related relate VBN 36297 2755 35 to to IN 36297 2755 36 the the DT 36297 2755 37 altitude altitude NN 36297 2755 38 _ _ NNP 36297 2755 39 h h NNP 36297 2755 40 _ _ NNP 36297 2755 41 in in IN 36297 2755 42 this this DT 36297 2755 43 manner manner NN 36297 2755 44 : : : 36297 2755 45 _ _ NNP 36297 2755 46 x x NNP 36297 2755 47 _ _ NNP 36297 2755 48 100 100 CD 36297 2755 49 ----- ----- CD 36297 2755 50 = = NFP 36297 2755 51 ----- ----- NFP 36297 2755 52 or or CC 36297 2755 53 _ _ NNP 36297 2755 54 xh xh NN 36297 2755 55 _ _ NNP 36297 2755 56 = = SYM 36297 2755 57 1000 1000 CD 36297 2755 58 10 10 CD 36297 2755 59 _ _ NNP 36297 2755 60 h h NNP 36297 2755 61 _ _ NNP 36297 2755 62 By by IN 36297 2755 63 substituting substitute VBG 36297 2755 64 the the DT 36297 2755 65 values value NNS 36297 2755 66 of of IN 36297 2755 67 altitude altitude NN 36297 2755 68 _ _ NNP 36297 2755 69 h h NNP 36297 2755 70 _ _ NNP 36297 2755 71 in in IN 36297 2755 72 the the DT 36297 2755 73 equation equation NN 36297 2755 74 the the DT 36297 2755 75 values value NNS 36297 2755 76 of of IN 36297 2755 77 the the DT 36297 2755 78 length length NN 36297 2755 79 _ _ NNP 36297 2755 80 x x NNP 36297 2755 81 _ _ NNP 36297 2755 82 of of IN 36297 2755 83 the the DT 36297 2755 84 image image NN 36297 2755 85 are be VBP 36297 2755 86 found find VBN 36297 2755 87 . . . 36297 2756 1 The the DT 36297 2756 2 following follow VBG 36297 2756 3 values value NNS 36297 2756 4 illustrate illustrate VBP 36297 2756 5 the the DT 36297 2756 6 change change NN 36297 2756 7 in in IN 36297 2756 8 size size NN 36297 2756 9 of of IN 36297 2756 10 the the DT 36297 2756 11 image image NN 36297 2756 12 with with IN 36297 2756 13 altitude altitude NN 36297 2756 14 : : : 36297 2756 15 Altitude Altitude NNP 36297 2756 16 _ _ NNP 36297 2756 17 h h NNP 36297 2756 18 _ _ NNP 36297 2756 19 in in IN 36297 2756 20 feet foot NNS 36297 2756 21 Size Size NNP 36297 2756 22 of of IN 36297 2756 23 image image NN 36297 2756 24 _ _ NNP 36297 2756 25 x x NNP 36297 2756 26 _ _ NNP 36297 2756 27 in in IN 36297 2756 28 inches inch NNS 36297 2756 29 1,000 1,000 CD 36297 2756 30 1.00 1.00 CD 36297 2756 31 2,000 2,000 CD 36297 2756 32 0.50 0.50 CD 36297 2756 33 3,000 3,000 CD 36297 2756 34 0.33 0.33 CD 36297 2756 35 4,000 4,000 CD 36297 2756 36 0.25 0.25 CD 36297 2756 37 10,000 10,000 CD 36297 2756 38 0.10 0.10 CD 36297 2756 39 20,000 20,000 CD 36297 2756 40 0.05 0.05 CD 36297 2756 41 It -PRON- PRP 36297 2756 42 is be VBZ 36297 2756 43 seen see VBN 36297 2756 44 that that IN 36297 2756 45 the the DT 36297 2756 46 image image NN 36297 2756 47 diminishes diminish VBZ 36297 2756 48 less less RBR 36297 2756 49 rapidly rapidly RB 36297 2756 50 in in IN 36297 2756 51 size size NN 36297 2756 52 as as IN 36297 2756 53 the the DT 36297 2756 54 altitude altitude NN 36297 2756 55 increases increase VBZ 36297 2756 56 . . . 36297 2757 1 For for IN 36297 2757 2 example example NN 36297 2757 3 , , , 36297 2757 4 going go VBG 36297 2757 5 from from IN 36297 2757 6 1000 1000 CD 36297 2757 7 feet foot NNS 36297 2757 8 to to IN 36297 2757 9 2000 2000 CD 36297 2757 10 feet foot NNS 36297 2757 11 the the DT 36297 2757 12 image image NN 36297 2757 13 is be VBZ 36297 2757 14 reduced reduce VBN 36297 2757 15 to to IN 36297 2757 16 one one CD 36297 2757 17 - - HYPH 36297 2757 18 half half NN 36297 2757 19 . . . 36297 2758 1 The the DT 36297 2758 2 same same JJ 36297 2758 3 reduction reduction NN 36297 2758 4 takes take VBZ 36297 2758 5 place place NN 36297 2758 6 in in IN 36297 2758 7 ascending ascend VBG 36297 2758 8 from from IN 36297 2758 9 10,000 10,000 CD 36297 2758 10 to to TO 36297 2758 11 20,000 20,000 CD 36297 2758 12 feet foot NNS 36297 2758 13 . . . 36297 2759 1 By by IN 36297 2759 2 taking take VBG 36297 2759 3 a a DT 36297 2759 4 series series NN 36297 2759 5 of of IN 36297 2759 6 photographs photograph NNS 36297 2759 7 and and CC 36297 2759 8 knowing know VBG 36297 2759 9 the the DT 36297 2759 10 reduction reduction NN 36297 2759 11 - - HYPH 36297 2759 12 factor factor NN 36297 2759 13 of of IN 36297 2759 14 the the DT 36297 2759 15 lens lens NN 36297 2759 16 it -PRON- PRP 36297 2759 17 is be VBZ 36297 2759 18 a a DT 36297 2759 19 simple simple JJ 36297 2759 20 matter matter NN 36297 2759 21 to to TO 36297 2759 22 study study VB 36297 2759 23 pattern pattern NN 36297 2759 24 . . . 36297 2760 1 An an DT 36297 2760 2 airplane airplane NN 36297 2760 3 of of IN 36297 2760 4 known know VBN 36297 2760 5 dimensions dimension NNS 36297 2760 6 can can MD 36297 2760 7 be be VB 36297 2760 8 placed place VBN 36297 2760 9 in in IN 36297 2760 10 the the DT 36297 2760 11 imagination imagination NN 36297 2760 12 at at IN 36297 2760 13 any any DT 36297 2760 14 altitude altitude NN 36297 2760 15 on on IN 36297 2760 16 a a DT 36297 2760 17 photograph photograph NN 36297 2760 18 taken take VBN 36297 2760 19 at at IN 36297 2760 20 a a DT 36297 2760 21 known know VBN 36297 2760 22 altitude altitude NN 36297 2760 23 and and CC 36297 2760 24 the the DT 36297 2760 25 futility futility NN 36297 2760 26 of of IN 36297 2760 27 certain certain JJ 36297 2760 28 patterns pattern NNS 36297 2760 29 and and CC 36297 2760 30 the the DT 36297 2760 31 advantages advantage NNS 36297 2760 32 of of IN 36297 2760 33 others other NNS 36297 2760 34 are be VBP 36297 2760 35 at at IN 36297 2760 36 once once RB 36297 2760 37 evident evident JJ 36297 2760 38 . . . 36297 2761 1 [ [ -LRB- 36297 2761 2 Illustration illustration NN 36297 2761 3 : : : 36297 2761 4 Fig Fig NNP 36297 2761 5 . . . 36297 2762 1 100.--Illustrating 100.--illustrating CD 36297 2762 2 the the DT 36297 2762 3 study study NN 36297 2762 4 of of IN 36297 2762 5 pattern pattern NN 36297 2762 6 for for IN 36297 2762 7 airplanes airplane NNS 36297 2762 8 . . . 36297 2763 1 The the DT 36297 2763 2 photograph photograph NN 36297 2763 3 was be VBD 36297 2763 4 taken take VBN 36297 2763 5 from from IN 36297 2763 6 an an DT 36297 2763 7 altitude altitude NN 36297 2763 8 of of IN 36297 2763 9 10,000 10,000 CD 36297 2763 10 feet foot NNS 36297 2763 11 . . . 36297 2764 1 The the DT 36297 2764 2 insert insert NN 36297 2764 3 shows show VBZ 36297 2764 4 the the DT 36297 2764 5 relative relative JJ 36297 2764 6 lengths length NNS 36297 2764 7 ( ( -LRB- 36297 2764 8 vertical vertical JJ 36297 2764 9 scale scale NN 36297 2764 10 ) ) -RRB- 36297 2764 11 of of IN 36297 2764 12 an an DT 36297 2764 13 airplane airplane NN 36297 2764 14 of of IN 36297 2764 15 50-foot 50-foot CD 36297 2764 16 spread spread NN 36297 2764 17 at at IN 36297 2764 18 various various JJ 36297 2764 19 distances distance NNS 36297 2764 20 below below IN 36297 2764 21 the the DT 36297 2764 22 observer observer NN 36297 2764 23 . . . 36297 2764 24 ] ] -RRB- 36297 2765 1 It -PRON- PRP 36297 2765 2 is be VBZ 36297 2765 3 impracticable impracticable JJ 36297 2765 4 to to TO 36297 2765 5 present present VB 36297 2765 6 colored color VBN 36297 2765 7 illustrations illustration NNS 36297 2765 8 in in IN 36297 2765 9 this this DT 36297 2765 10 résumé résumé NN 36297 2765 11 and and CC 36297 2765 12 values value NNS 36297 2765 13 expressed express VBN 36297 2765 14 in in IN 36297 2765 15 numbers number NNS 36297 2765 16 are be VBP 36297 2765 17 meaningless meaningless JJ 36297 2765 18 to to IN 36297 2765 19 most most JJS 36297 2765 20 persons person NNS 36297 2765 21 , , , 36297 2765 22 so so IN 36297 2765 23 a a DT 36297 2765 24 few few JJ 36297 2765 25 general general JJ 36297 2765 26 remarks remark NNS 36297 2765 27 will will MD 36297 2765 28 be be VB 36297 2765 29 made make VBN 36297 2765 30 in in IN 36297 2765 31 closing close VBG 36297 2765 32 the the DT 36297 2765 33 discussion discussion NN 36297 2765 34 of of IN 36297 2765 35 low low JJ 36297 2765 36 visibility visibility NN 36297 2765 37 as as IN 36297 2765 38 viewed view VBN 36297 2765 39 from from IN 36297 2765 40 above above RB 36297 2765 41 in in IN 36297 2765 42 spring spring NN 36297 2765 43 , , , 36297 2765 44 summer summer NN 36297 2765 45 and and CC 36297 2765 46 fall fall VB 36297 2765 47 . . . 36297 2766 1 A a DT 36297 2766 2 black black JJ 36297 2766 3 craft craft NN 36297 2766 4 is be VBZ 36297 2766 5 of of IN 36297 2766 6 much much RB 36297 2766 7 lower low JJR 36297 2766 8 visibility visibility NN 36297 2766 9 than than IN 36297 2766 10 a a DT 36297 2766 11 white white JJ 36297 2766 12 one one CD 36297 2766 13 . . . 36297 2767 1 White White NNP 36297 2767 2 should should MD 36297 2767 3 not not RB 36297 2767 4 be be VB 36297 2767 5 used use VBN 36297 2767 6 . . . 36297 2768 1 The the DT 36297 2768 2 paints paint NNS 36297 2768 3 should should MD 36297 2768 4 be be VB 36297 2768 5 very very RB 36297 2768 6 dark dark JJ 36297 2768 7 shades shade NNS 36297 2768 8 . . . 36297 2769 1 The the DT 36297 2769 2 hues hue NNS 36297 2769 3 are be VBP 36297 2769 4 approximately approximately RB 36297 2769 5 the the DT 36297 2769 6 same same JJ 36297 2769 7 for for IN 36297 2769 8 the the DT 36297 2769 9 earth earth NN 36297 2769 10 areas area NNS 36297 2769 11 as as IN 36297 2769 12 seen see VBN 36297 2769 13 at at IN 36297 2769 14 the the DT 36297 2769 15 earth earth NN 36297 2769 16 's 's POS 36297 2769 17 surface surface NN 36297 2769 18 . . . 36297 2770 1 Inland Inland NNP 36297 2770 2 waters water NNS 36297 2770 3 are be VBP 36297 2770 4 a a DT 36297 2770 5 dirty dirty JJ 36297 2770 6 blue blue JJ 36297 2770 7 - - HYPH 36297 2770 8 green green JJ 36297 2770 9 or or CC 36297 2770 10 bluish bluish JJ 36297 2770 11 - - HYPH 36297 2770 12 green green JJ 36297 2770 13 , , , 36297 2770 14 and and CC 36297 2770 15 deep deep JJ 36297 2770 16 ocean ocean NN 36297 2770 17 water water NN 36297 2770 18 is be VBZ 36297 2770 19 a a DT 36297 2770 20 greenish greenish JJ 36297 2770 21 - - HYPH 36297 2770 22 blue blue JJ 36297 2770 23 when when WRB 36297 2770 24 viewed view VBN 36297 2770 25 vertically vertically RB 36297 2770 26 , , , 36297 2770 27 or or CC 36297 2770 28 nearly nearly RB 36297 2770 29 so so RB 36297 2770 30 . . . 36297 2771 1 Mean mean JJ 36297 2771 2 hues hue NNS 36297 2771 3 of of IN 36297 2771 4 these these DT 36297 2771 5 were be VBD 36297 2771 6 determined determine VBN 36297 2771 7 approximately approximately RB 36297 2771 8 . . . 36297 2772 1 Before before IN 36297 2772 2 considering consider VBG 36297 2772 3 other other JJ 36297 2772 4 aspects aspect NNS 36297 2772 5 of of IN 36297 2772 6 camouflage camouflage NN 36297 2772 7 it -PRON- PRP 36297 2772 8 is be VBZ 36297 2772 9 well well JJ 36297 2772 10 to to TO 36297 2772 11 consider consider VB 36297 2772 12 such such JJ 36297 2772 13 features feature NNS 36297 2772 14 as as IN 36297 2772 15 haze haze NN 36297 2772 16 , , , 36297 2772 17 clouds cloud NNS 36297 2772 18 and and CC 36297 2772 19 sky sky NN 36297 2772 20 . . . 36297 2773 1 There there EX 36297 2773 2 appear appear VBP 36297 2773 3 to to TO 36297 2773 4 be be VB 36297 2773 5 two two CD 36297 2773 6 kinds kind NNS 36297 2773 7 of of IN 36297 2773 8 haze haze NN 36297 2773 9 which which WDT 36297 2773 10 the the DT 36297 2773 11 writer writer NN 36297 2773 12 will will MD 36297 2773 13 arbitrarily arbitrarily RB 36297 2773 14 call call VB 36297 2773 15 earth earth NN 36297 2773 16 and and CC 36297 2773 17 high high JJ 36297 2773 18 haze haze NN 36297 2773 19 , , , 36297 2773 20 respectively respectively RB 36297 2773 21 . . . 36297 2774 1 The the DT 36297 2774 2 former former JJ 36297 2774 3 consists consist VBZ 36297 2774 4 chiefly chiefly RB 36297 2774 5 of of IN 36297 2774 6 dust dust NN 36297 2774 7 and and CC 36297 2774 8 smoke smoke NN 36297 2774 9 and and CC 36297 2774 10 usually usually RB 36297 2774 11 extends extend VBZ 36297 2774 12 to to IN 36297 2774 13 an an DT 36297 2774 14 altitude altitude NN 36297 2774 15 of of IN 36297 2774 16 about about RB 36297 2774 17 one one CD 36297 2774 18 mile mile NN 36297 2774 19 , , , 36297 2774 20 although although IN 36297 2774 21 it -PRON- PRP 36297 2774 22 occasionally occasionally RB 36297 2774 23 extends extend VBZ 36297 2774 24 much much RB 36297 2774 25 higher high JJR 36297 2774 26 . . . 36297 2775 1 Its -PRON- PRP$ 36297 2775 2 upper upper JJ 36297 2775 3 limit limit NN 36297 2775 4 is be VBZ 36297 2775 5 very very RB 36297 2775 6 distinct distinct JJ 36297 2775 7 , , , 36297 2775 8 as as IN 36297 2775 9 seen see VBN 36297 2775 10 by by IN 36297 2775 11 the the DT 36297 2775 12 " " `` 36297 2775 13 false false JJ 36297 2775 14 " " '' 36297 2775 15 horizon horizon NN 36297 2775 16 . . . 36297 2776 1 This this DT 36297 2776 2 horizon horizon NN 36297 2776 3 is be VBZ 36297 2776 4 used use VBN 36297 2776 5 more more JJR 36297 2776 6 by by IN 36297 2776 7 the the DT 36297 2776 8 pilot pilot NN 36297 2776 9 when when WRB 36297 2776 10 flying fly VBG 36297 2776 11 at at IN 36297 2776 12 certain certain JJ 36297 2776 13 altitudes altitude NNS 36297 2776 14 than than IN 36297 2776 15 the the DT 36297 2776 16 true true JJ 36297 2776 17 horizon horizon NN 36297 2776 18 . . . 36297 2777 1 At at IN 36297 2777 2 the the DT 36297 2777 3 top top NN 36297 2777 4 of of IN 36297 2777 5 this this DT 36297 2777 6 haze haze NN 36297 2777 7 cumulus cumulus NN 36297 2777 8 clouds cloud NNS 36297 2777 9 are be VBP 36297 2777 10 commonly commonly RB 36297 2777 11 seen see VBN 36297 2777 12 to to TO 36297 2777 13 be be VB 36297 2777 14 poking poke VBG 36297 2777 15 out out RP 36297 2777 16 like like IN 36297 2777 17 nearly nearly RB 36297 2777 18 submerged submerge VBN 36297 2777 19 icebergs iceberg NNS 36297 2777 20 . . . 36297 2778 1 The the DT 36297 2778 2 upper upper JJ 36297 2778 3 haze haze NN 36297 2778 4 appears appear VBZ 36297 2778 5 somewhat somewhat RB 36297 2778 6 whiter white JJR 36297 2778 7 in in IN 36297 2778 8 color color NN 36297 2778 9 and and CC 36297 2778 10 appears appear VBZ 36297 2778 11 to to TO 36297 2778 12 extend extend VB 36297 2778 13 sometimes sometimes RB 36297 2778 14 to to IN 36297 2778 15 altitudes altitude NNS 36297 2778 16 of of IN 36297 2778 17 several several JJ 36297 2778 18 or or CC 36297 2778 19 even even RB 36297 2778 20 many many JJ 36297 2778 21 miles mile NNS 36297 2778 22 . . . 36297 2779 1 The the DT 36297 2779 2 fact fact NN 36297 2779 3 that that IN 36297 2779 4 the the DT 36297 2779 5 " " `` 36297 2779 6 earth earth NN 36297 2779 7 " " '' 36297 2779 8 haze haze NN 36297 2779 9 may may MD 36297 2779 10 be be VB 36297 2779 11 seen see VBN 36297 2779 12 to to TO 36297 2779 13 end end VB 36297 2779 14 usually usually RB 36297 2779 15 at at IN 36297 2779 16 about about RB 36297 2779 17 5000 5000 CD 36297 2779 18 to to IN 36297 2779 19 6000 6000 CD 36297 2779 20 feet foot NNS 36297 2779 21 and and CC 36297 2779 22 the the DT 36297 2779 23 upper upper JJ 36297 2779 24 haze haze NN 36297 2779 25 to to TO 36297 2779 26 persist persist VB 36297 2779 27 even even RB 36297 2779 28 beyond beyond IN 36297 2779 29 20,000 20,000 CD 36297 2779 30 feet foot NNS 36297 2779 31 has have VBZ 36297 2779 32 led lead VBN 36297 2779 33 the the DT 36297 2779 34 author author NN 36297 2779 35 to to TO 36297 2779 36 apply apply VB 36297 2779 37 different different JJ 36297 2779 38 names name NNS 36297 2779 39 for for IN 36297 2779 40 convenience convenience NN 36297 2779 41 . . . 36297 2780 1 The the DT 36297 2780 2 upper upper JJ 36297 2780 3 limit limit NN 36297 2780 4 of of IN 36297 2780 5 the the DT 36297 2780 6 " " `` 36297 2780 7 earth earth NN 36297 2780 8 " " '' 36297 2780 9 haze haze NN 36297 2780 10 is be VBZ 36297 2780 11 determined determine VBN 36297 2780 12 by by IN 36297 2780 13 the the DT 36297 2780 14 height height NN 36297 2780 15 of of IN 36297 2780 16 diurnal diurnal JJ 36297 2780 17 atmospheric atmospheric JJ 36297 2780 18 convection convection NN 36297 2780 19 . . . 36297 2781 1 Haze haze NN 36297 2781 2 aids aids NNP 36297 2781 3 in in IN 36297 2781 4 lowering lower VBG 36297 2781 5 the the DT 36297 2781 6 visibility visibility NN 36297 2781 7 of of IN 36297 2781 8 airplanes airplane NNS 36297 2781 9 by by IN 36297 2781 10 providing provide VBG 36297 2781 11 a a DT 36297 2781 12 luminous luminous JJ 36297 2781 13 veil veil NN 36297 2781 14 , , , 36297 2781 15 but but CC 36297 2781 16 it -PRON- PRP 36297 2781 17 also also RB 36297 2781 18 operates operate VBZ 36297 2781 19 at at IN 36297 2781 20 some some DT 36297 2781 21 altitudes altitude NNS 36297 2781 22 to to TO 36297 2781 23 increase increase VB 36297 2781 24 the the DT 36297 2781 25 brightness brightness NN 36297 2781 26 of of IN 36297 2781 27 the the DT 36297 2781 28 sky sky NN 36297 2781 29 , , , 36297 2781 30 which which WDT 36297 2781 31 is be VBZ 36297 2781 32 the the DT 36297 2781 33 background background NN 36297 2781 34 in in IN 36297 2781 35 this this DT 36297 2781 36 case case NN 36297 2781 37 . . . 36297 2782 1 The the DT 36297 2782 2 sky sky NN 36297 2782 3 generally generally RB 36297 2782 4 decreases decrease VBZ 36297 2782 5 considerably considerably RB 36297 2782 6 in in IN 36297 2782 7 brightness brightness NN 36297 2782 8 as as IN 36297 2782 9 the the DT 36297 2782 10 observer observer NN 36297 2782 11 ascends ascend VBZ 36297 2782 12 . . . 36297 2783 1 The the DT 36297 2783 2 brightness brightness NN 36297 2783 3 of of IN 36297 2783 4 the the DT 36297 2783 5 sky sky NN 36297 2783 6 is be VBZ 36297 2783 7 due due JJ 36297 2783 8 to to IN 36297 2783 9 scattered scatter VBN 36297 2783 10 light light NN 36297 2783 11 , , , 36297 2783 12 that that RB 36297 2783 13 is is RB 36297 2783 14 , , , 36297 2783 15 to to IN 36297 2783 16 light light NN 36297 2783 17 being be VBG 36297 2783 18 reflected reflect VBN 36297 2783 19 by by IN 36297 2783 20 particles particle NNS 36297 2783 21 of of IN 36297 2783 22 dust dust NN 36297 2783 23 , , , 36297 2783 24 smoke smoke NN 36297 2783 25 , , , 36297 2783 26 thinly thinly RB 36297 2783 27 diffused diffuse VBD 36297 2783 28 clouds cloud NNS 36297 2783 29 , , , 36297 2783 30 etc etc FW 36297 2783 31 . . . 36297 2784 1 By by IN 36297 2784 2 making make VBG 36297 2784 3 a a DT 36297 2784 4 series series NN 36297 2784 5 of of IN 36297 2784 6 measurements measurement NNS 36297 2784 7 of of IN 36297 2784 8 the the DT 36297 2784 9 brightness brightness NN 36297 2784 10 of of IN 36297 2784 11 the the DT 36297 2784 12 zenith zenith NNP 36297 2784 13 sky sky NN 36297 2784 14 for for IN 36297 2784 15 various various JJ 36297 2784 16 altitudes altitude NNS 36297 2784 17 , , , 36297 2784 18 the the DT 36297 2784 19 altitude altitude NN 36297 2784 20 where where WRB 36297 2784 21 the the DT 36297 2784 22 earth earth NN 36297 2784 23 haze haze NN 36297 2784 24 ends end VBZ 36297 2784 25 is be VBZ 36297 2784 26 usually usually RB 36297 2784 27 plainly plainly RB 36297 2784 28 distinguishable distinguishable JJ 36297 2784 29 . . . 36297 2785 1 Many many JJ 36297 2785 2 observations observation NNS 36297 2785 3 of of IN 36297 2785 4 this this DT 36297 2785 5 character character NN 36297 2785 6 were be VBD 36297 2785 7 accumulated accumulate VBN 36297 2785 8 . . . 36297 2786 1 In in IN 36297 2786 2 some some DT 36297 2786 3 extreme extreme JJ 36297 2786 4 cases case NNS 36297 2786 5 the the DT 36297 2786 6 sky sky NN 36297 2786 7 was be VBD 36297 2786 8 found find VBN 36297 2786 9 to to TO 36297 2786 10 be be VB 36297 2786 11 only only RB 36297 2786 12 one one CD 36297 2786 13 - - HYPH 36297 2786 14 tenth tenth NN 36297 2786 15 as as IN 36297 2786 16 bright bright JJ 36297 2786 17 when when WRB 36297 2786 18 observed observe VBN 36297 2786 19 at at IN 36297 2786 20 high high JJ 36297 2786 21 altitudes altitude NNS 36297 2786 22 of of IN 36297 2786 23 15,000 15,000 CD 36297 2786 24 to to TO 36297 2786 25 20,000 20,000 CD 36297 2786 26 feet foot NNS 36297 2786 27 as as IN 36297 2786 28 seen see VBN 36297 2786 29 from from IN 36297 2786 30 the the DT 36297 2786 31 earth earth NN 36297 2786 32 's 's POS 36297 2786 33 surface surface NN 36297 2786 34 . . . 36297 2787 1 This this DT 36297 2787 2 accounts account VBZ 36297 2787 3 partly partly RB 36297 2787 4 for for IN 36297 2787 5 the the DT 36297 2787 6 decrease decrease NN 36297 2787 7 in in IN 36297 2787 8 the the DT 36297 2787 9 visibility visibility NN 36297 2787 10 of of IN 36297 2787 11 an an DT 36297 2787 12 airplane airplane NN 36297 2787 13 as as IN 36297 2787 14 it -PRON- PRP 36297 2787 15 ascends ascend VBZ 36297 2787 16 . . . 36297 2788 1 At at IN 36297 2788 2 20,000 20,000 CD 36297 2788 3 feet foot NNS 36297 2788 4 the the DT 36297 2788 5 sky sky NN 36297 2788 6 was be VBD 36297 2788 7 found find VBN 36297 2788 8 to to TO 36297 2788 9 contribute contribute VB 36297 2788 10 as as RB 36297 2788 11 little little JJ 36297 2788 12 as as IN 36297 2788 13 4 4 CD 36297 2788 14 per per NN 36297 2788 15 cent cent NN 36297 2788 16 of of IN 36297 2788 17 the the DT 36297 2788 18 total total JJ 36297 2788 19 light light NN 36297 2788 20 on on IN 36297 2788 21 a a DT 36297 2788 22 horizontal horizontal JJ 36297 2788 23 plane plane NN 36297 2788 24 and and CC 36297 2788 25 the the DT 36297 2788 26 extreme extreme JJ 36297 2788 27 harshness harshness NN 36297 2788 28 of of IN 36297 2788 29 the the DT 36297 2788 30 lighting lighting NN 36297 2788 31 is be VBZ 36297 2788 32 very very RB 36297 2788 33 noticeable noticeable JJ 36297 2788 34 when when WRB 36297 2788 35 the the DT 36297 2788 36 upper upper JJ 36297 2788 37 sky sky NN 36297 2788 38 is be VBZ 36297 2788 39 cloudless cloudless JJ 36297 2788 40 and and CC 36297 2788 41 clear clear JJ 36297 2788 42 . . . 36297 2789 1 Doubtless doubtless RB 36297 2789 2 , , , 36297 2789 3 it -PRON- PRP 36297 2789 4 has have VBZ 36297 2789 5 been be VBN 36297 2789 6 commonly commonly RB 36297 2789 7 noted note VBN 36297 2789 8 that that IN 36297 2789 9 airplanes airplane NNS 36297 2789 10 are be VBP 36297 2789 11 generally generally RB 36297 2789 12 very very RB 36297 2789 13 dark dark JJ 36297 2789 14 objects object NNS 36297 2789 15 as as IN 36297 2789 16 viewed view VBN 36297 2789 17 from from IN 36297 2789 18 below below RB 36297 2789 19 against against IN 36297 2789 20 the the DT 36297 2789 21 sky sky NN 36297 2789 22 . . . 36297 2790 1 Even even RB 36297 2790 2 when when WRB 36297 2790 3 painted paint VBN 36297 2790 4 white white JJ 36297 2790 5 they -PRON- PRP 36297 2790 6 are be VBP 36297 2790 7 usually usually RB 36297 2790 8 much much RB 36297 2790 9 darker dark JJR 36297 2790 10 than than IN 36297 2790 11 the the DT 36297 2790 12 sky sky NN 36297 2790 13 . . . 36297 2791 1 As as IN 36297 2791 2 they -PRON- PRP 36297 2791 3 ascend ascend VBP 36297 2791 4 the the DT 36297 2791 5 sky sky NN 36297 2791 6 above above IN 36297 2791 7 them -PRON- PRP 36297 2791 8 becomes become VBZ 36297 2791 9 darker dark JJR 36297 2791 10 , , , 36297 2791 11 although although IN 36297 2791 12 to to IN 36297 2791 13 the the DT 36297 2791 14 observer observer NN 36297 2791 15 on on IN 36297 2791 16 the the DT 36297 2791 17 ground ground NN 36297 2791 18 the the DT 36297 2791 19 sky sky NN 36297 2791 20 remains remain VBZ 36297 2791 21 constant constant JJ 36297 2791 22 in in IN 36297 2791 23 brightness brightness NN 36297 2791 24 . . . 36297 2792 1 However however RB 36297 2792 2 , , , 36297 2792 3 in in IN 36297 2792 4 ascending ascending NN 36297 2792 5 , , , 36297 2792 6 the the DT 36297 2792 7 airplane airplane NN 36297 2792 8 is be VBZ 36297 2792 9 leaving leave VBG 36297 2792 10 below below IN 36297 2792 11 it -PRON- PRP 36297 2792 12 more more RBR 36297 2792 13 and and CC 36297 2792 14 more more RBR 36297 2792 15 luminous luminous JJ 36297 2792 16 haze haze NN 36297 2792 17 which which WDT 36297 2792 18 acts act VBZ 36297 2792 19 as as IN 36297 2792 20 a a DT 36297 2792 21 veil veil NN 36297 2792 22 in in IN 36297 2792 23 aiding aid VBG 36297 2792 24 to to TO 36297 2792 25 screen screen VB 36297 2792 26 it -PRON- PRP 36297 2792 27 until until IN 36297 2792 28 , , , 36297 2792 29 when when WRB 36297 2792 30 it -PRON- PRP 36297 2792 31 reaches reach VBZ 36297 2792 32 a a DT 36297 2792 33 high high JJ 36297 2792 34 altitude altitude NN 36297 2792 35 , , , 36297 2792 36 the the DT 36297 2792 37 combination combination NN 36297 2792 38 of of IN 36297 2792 39 dark dark JJ 36297 2792 40 sky sky NN 36297 2792 41 behind behind IN 36297 2792 42 it -PRON- PRP 36297 2792 43 and and CC 36297 2792 44 luminous luminous JJ 36297 2792 45 haze haze NN 36297 2792 46 between between IN 36297 2792 47 it -PRON- PRP 36297 2792 48 and and CC 36297 2792 49 the the DT 36297 2792 50 observer observer NN 36297 2792 51 on on IN 36297 2792 52 the the DT 36297 2792 53 ground ground NN 36297 2792 54 , , , 36297 2792 55 it -PRON- PRP 36297 2792 56 becomes become VBZ 36297 2792 57 of of IN 36297 2792 58 much much RB 36297 2792 59 lower low JJR 36297 2792 60 visibility visibility NN 36297 2792 61 . . . 36297 2793 1 Another another DT 36297 2793 2 factor factor NN 36297 2793 3 which which WDT 36297 2793 4 contributes contribute VBZ 36297 2793 5 somewhat somewhat RB 36297 2793 6 is be VBZ 36297 2793 7 its -PRON- PRP$ 36297 2793 8 diminishing diminish VBG 36297 2793 9 size size NN 36297 2793 10 as as IN 36297 2793 11 viewed view VBN 36297 2793 12 from from IN 36297 2793 13 a a DT 36297 2793 14 fixed fix VBN 36297 2793 15 position position NN 36297 2793 16 at at IN 36297 2793 17 the the DT 36297 2793 18 earth earth NN 36297 2793 19 . . . 36297 2794 1 The the DT 36297 2794 2 minimum minimum JJ 36297 2794 3 perceptible perceptible JJ 36297 2794 4 contrast contrast NN 36297 2794 5 becomes become VBZ 36297 2794 6 larger large JJR 36297 2794 7 as as IN 36297 2794 8 the the DT 36297 2794 9 size size NN 36297 2794 10 of of IN 36297 2794 11 the the DT 36297 2794 12 contrasting contrast VBG 36297 2794 13 patch patch NN 36297 2794 14 diminishes diminishe NNS 36297 2794 15 . . . 36297 2795 1 Inasmuch inasmuch IN 36297 2795 2 as as IN 36297 2795 3 there there EX 36297 2795 4 is be VBZ 36297 2795 5 not not RB 36297 2795 6 enough enough JJ 36297 2795 7 light light NN 36297 2795 8 reflected reflect VBN 36297 2795 9 upward upward RB 36297 2795 10 from from IN 36297 2795 11 the the DT 36297 2795 12 earth earth NN 36297 2795 13 to to TO 36297 2795 14 illuminate illuminate VB 36297 2795 15 the the DT 36297 2795 16 lower low JJR 36297 2795 17 side side NN 36297 2795 18 of of IN 36297 2795 19 an an DT 36297 2795 20 opaque opaque JJ 36297 2795 21 surface surface NN 36297 2795 22 sufficiently sufficiently RB 36297 2795 23 to to TO 36297 2795 24 make make VB 36297 2795 25 it -PRON- PRP 36297 2795 26 as as RB 36297 2795 27 bright bright JJ 36297 2795 28 as as IN 36297 2795 29 the the DT 36297 2795 30 sky sky NN 36297 2795 31 ordinarily ordinarily RB 36297 2795 32 , , , 36297 2795 33 excepting except VBG 36297 2795 34 at at IN 36297 2795 35 very very RB 36297 2795 36 high high JJ 36297 2795 37 altitudes altitude NNS 36297 2795 38 for for IN 36297 2795 39 very very RB 36297 2795 40 clear clear JJ 36297 2795 41 skies sky NNS 36297 2795 42 , , , 36297 2795 43 it -PRON- PRP 36297 2795 44 is be VBZ 36297 2795 45 necessary necessary JJ 36297 2795 46 , , , 36297 2795 47 in in IN 36297 2795 48 order order NN 36297 2795 49 to to TO 36297 2795 50 attain attain VB 36297 2795 51 low low JJ 36297 2795 52 visibility visibility NN 36297 2795 53 for for IN 36297 2795 54 airplanes airplane NNS 36297 2795 55 as as IN 36297 2795 56 viewed view VBN 36297 2795 57 from from IN 36297 2795 58 below below RB 36297 2795 59 , , , 36297 2795 60 to to TO 36297 2795 61 supply supply VB 36297 2795 62 some some DT 36297 2795 63 additional additional JJ 36297 2795 64 illumination illumination NN 36297 2795 65 to to IN 36297 2795 66 the the DT 36297 2795 67 lower low JJR 36297 2795 68 surfaces surface NNS 36297 2795 69 . . . 36297 2796 1 Computations computation NNS 36297 2796 2 have have VBP 36297 2796 3 shown show VBN 36297 2796 4 that that IN 36297 2796 5 artificial artificial JJ 36297 2796 6 lighting lighting NN 36297 2796 7 is be VBZ 36297 2796 8 impracticable impracticable JJ 36297 2796 9 , , , 36297 2796 10 but but CC 36297 2796 11 measurements measurement NNS 36297 2796 12 on on IN 36297 2796 13 undoped undoped JJ 36297 2796 14 airplane airplane NN 36297 2796 15 fabrics fabric NNS 36297 2796 16 indicate indicate VBP 36297 2796 17 that that IN 36297 2796 18 on on IN 36297 2796 19 sunny sunny JJ 36297 2796 20 days day NNS 36297 2796 21 a a DT 36297 2796 22 sufficient sufficient JJ 36297 2796 23 brightness brightness NN 36297 2796 24 can can MD 36297 2796 25 be be VB 36297 2796 26 obtained obtain VBN 36297 2796 27 from from IN 36297 2796 28 direct direct JJ 36297 2796 29 sunlight sunlight NN 36297 2796 30 diffused diffuse VBN 36297 2796 31 by by IN 36297 2796 32 the the DT 36297 2796 33 fabric fabric NN 36297 2796 34 to to TO 36297 2796 35 increase increase VB 36297 2796 36 the the DT 36297 2796 37 brightness brightness NN 36297 2796 38 to to IN 36297 2796 39 the the DT 36297 2796 40 order order NN 36297 2796 41 of of IN 36297 2796 42 magnitude magnitude NN 36297 2796 43 of of IN 36297 2796 44 the the DT 36297 2796 45 brightness brightness NN 36297 2796 46 of of IN 36297 2796 47 the the DT 36297 2796 48 sky sky NN 36297 2796 49 . . . 36297 2797 1 On on IN 36297 2797 2 overcast overcast JJ 36297 2797 3 days day NNS 36297 2797 4 an an DT 36297 2797 5 airplane airplane NN 36297 2797 6 will will MD 36297 2797 7 nearly nearly RB 36297 2797 8 always always RB 36297 2797 9 appear appear VB 36297 2797 10 very very RB 36297 2797 11 much much RB 36297 2797 12 darker dark JJR 36297 2797 13 than than IN 36297 2797 14 the the DT 36297 2797 15 sky sky NN 36297 2797 16 . . . 36297 2798 1 That that RB 36297 2798 2 is is RB 36297 2798 3 , , , 36297 2798 4 the the DT 36297 2798 5 brightness brightness NN 36297 2798 6 of of IN 36297 2798 7 the the DT 36297 2798 8 lower low JJR 36297 2798 9 sides side NNS 36297 2798 10 can can MD 36297 2798 11 in in IN 36297 2798 12 no no DT 36297 2798 13 other other JJ 36297 2798 14 manner manner NN 36297 2798 15 be be VB 36297 2798 16 made make VBN 36297 2798 17 equal equal JJ 36297 2798 18 to to IN 36297 2798 19 that that DT 36297 2798 20 of of IN 36297 2798 21 the the DT 36297 2798 22 sky sky NN 36297 2798 23 . . . 36297 2799 1 However however RB 36297 2799 2 , , , 36297 2799 3 low low JJ 36297 2799 4 visibility visibility NN 36297 2799 5 can can MD 36297 2799 6 be be VB 36297 2799 7 obtained obtain VBN 36297 2799 8 on on IN 36297 2799 9 sunny sunny JJ 36297 2799 10 days day NNS 36297 2799 11 which which WDT 36297 2799 12 is be VBZ 36297 2799 13 an an DT 36297 2799 14 advantage advantage NN 36297 2799 15 over over IN 36297 2799 16 high high JJ 36297 2799 17 visibility visibility NN 36297 2799 18 at at IN 36297 2799 19 all all DT 36297 2799 20 times time NNS 36297 2799 21 , , , 36297 2799 22 as as IN 36297 2799 23 is be VBZ 36297 2799 24 the the DT 36297 2799 25 case case NN 36297 2799 26 with with IN 36297 2799 27 airplanes airplane NNS 36297 2799 28 now now RB 36297 2799 29 in in IN 36297 2799 30 use use NN 36297 2799 31 . . . 36297 2800 1 Many many JJ 36297 2800 2 observations observation NNS 36297 2800 3 and and CC 36297 2800 4 computations computation NNS 36297 2800 5 of of IN 36297 2800 6 these these DT 36297 2800 7 and and CC 36297 2800 8 other other JJ 36297 2800 9 factors factor NNS 36297 2800 10 have have VBP 36297 2800 11 been be VBN 36297 2800 12 made make VBN 36297 2800 13 , , , 36297 2800 14 so so IN 36297 2800 15 that that IN 36297 2800 16 it -PRON- PRP 36297 2800 17 is be VBZ 36297 2800 18 possible possible JJ 36297 2800 19 to to TO 36297 2800 20 predict predict VB 36297 2800 21 results result NNS 36297 2800 22 . . . 36297 2801 1 Transparent transparent JJ 36297 2801 2 media medium NNS 36297 2801 3 have have VBP 36297 2801 4 obvious obvious JJ 36297 2801 5 advantages advantage NNS 36297 2801 6 , , , 36297 2801 7 but but CC 36297 2801 8 no no DT 36297 2801 9 satisfactory satisfactory JJ 36297 2801 10 ones one NNS 36297 2801 11 are be VBP 36297 2801 12 available available JJ 36297 2801 13 at at IN 36297 2801 14 present present NN 36297 2801 15 . . . 36297 2802 1 Having have VBG 36297 2802 2 considered consider VBN 36297 2802 3 low low JJ 36297 2802 4 visibility visibility NN 36297 2802 5 of of IN 36297 2802 6 aircraft aircraft NN 36297 2802 7 as as IN 36297 2802 8 viewed view VBN 36297 2802 9 from from IN 36297 2802 10 above above RB 36297 2802 11 and and CC 36297 2802 12 from from IN 36297 2802 13 below below RB 36297 2802 14 , , , 36297 2802 15 respectively respectively RB 36297 2802 16 , , , 36297 2802 17 it -PRON- PRP 36297 2802 18 is be VBZ 36297 2802 19 of of IN 36297 2802 20 interest interest NN 36297 2802 21 to to TO 36297 2802 22 discuss discuss VB 36297 2802 23 briefly briefly RB 36297 2802 24 the the DT 36297 2802 25 possibility possibility NN 36297 2802 26 of of IN 36297 2802 27 attaining attain VBG 36297 2802 28 both both DT 36297 2802 29 of of IN 36297 2802 30 these these DT 36297 2802 31 simultaneously simultaneously RB 36297 2802 32 with with IN 36297 2802 33 a a DT 36297 2802 34 given give VBN 36297 2802 35 airplane airplane NN 36297 2802 36 . . . 36297 2803 1 Frankly frankly RB 36297 2803 2 , , , 36297 2803 3 it -PRON- PRP 36297 2803 4 is be VBZ 36297 2803 5 not not RB 36297 2803 6 practicable practicable JJ 36297 2803 7 to to TO 36297 2803 8 do do VB 36297 2803 9 this this DT 36297 2803 10 . . . 36297 2804 1 An an DT 36297 2804 2 airplane airplane NN 36297 2804 3 to to TO 36297 2804 4 be be VB 36297 2804 5 of of IN 36297 2804 6 low low JJ 36297 2804 7 visibility visibility NN 36297 2804 8 against against IN 36297 2804 9 the the DT 36297 2804 10 earth earth NN 36297 2804 11 background background NN 36297 2804 12 must must MD 36297 2804 13 be be VB 36297 2804 14 painted paint VBN 36297 2804 15 or or CC 36297 2804 16 dyed dye VBN 36297 2804 17 very very RB 36297 2804 18 dark dark JJ 36297 2804 19 shades shade NNS 36297 2804 20 of of IN 36297 2804 21 appropriate appropriate JJ 36297 2804 22 color color NN 36297 2804 23 and and CC 36297 2804 24 pattern pattern NN 36297 2804 25 . . . 36297 2805 1 This this DT 36297 2805 2 renders render VBZ 36297 2805 3 it -PRON- PRP 36297 2805 4 almost almost RB 36297 2805 5 opaque opaque JJ 36297 2805 6 and and CC 36297 2805 7 it -PRON- PRP 36297 2805 8 will will MD 36297 2805 9 be be VB 36297 2805 10 a a DT 36297 2805 11 very very RB 36297 2805 12 dark dark JJ 36297 2805 13 object object NN 36297 2805 14 when when WRB 36297 2805 15 viewed view VBN 36297 2805 16 against against IN 36297 2805 17 the the DT 36297 2805 18 sky sky NN 36297 2805 19 . . . 36297 2806 1 If if IN 36297 2806 2 the the DT 36297 2806 3 lower low JJR 36297 2806 4 surfaces surface NNS 36297 2806 5 of of IN 36297 2806 6 the the DT 36297 2806 7 airplane airplane NN 36297 2806 8 are be VBP 36297 2806 9 painted paint VBN 36297 2806 10 as as RB 36297 2806 11 white white JJ 36297 2806 12 as as IN 36297 2806 13 possible possible JJ 36297 2806 14 the the DT 36297 2806 15 airplane airplane NN 36297 2806 16 still still RB 36297 2806 17 remains remain VBZ 36297 2806 18 a a DT 36297 2806 19 dark dark JJ 36297 2806 20 object object NN 36297 2806 21 against against IN 36297 2806 22 the the DT 36297 2806 23 blue blue JJ 36297 2806 24 sky sky NN 36297 2806 25 and and CC 36297 2806 26 a a DT 36297 2806 27 very very RB 36297 2806 28 dark dark JJ 36297 2806 29 object object NN 36297 2806 30 against against IN 36297 2806 31 an an DT 36297 2806 32 overcast overcast JJ 36297 2806 33 sky sky NN 36297 2806 34 , , , 36297 2806 35 except except IN 36297 2806 36 at at IN 36297 2806 37 high high JJ 36297 2806 38 altitudes altitude NNS 36297 2806 39 . . . 36297 2807 1 In in IN 36297 2807 2 the the DT 36297 2807 3 latter latter JJ 36297 2807 4 cases case NNS 36297 2807 5 the the DT 36297 2807 6 contrast contrast NN 36297 2807 7 is be VBZ 36297 2807 8 not not RB 36297 2807 9 as as RB 36297 2807 10 great great JJ 36297 2807 11 as as IN 36297 2807 12 already already RB 36297 2807 13 explained explain VBN 36297 2807 14 . . . 36297 2808 1 A a DT 36297 2808 2 practicable practicable JJ 36297 2808 3 method method NN 36297 2808 4 of of IN 36297 2808 5 decreasing decrease VBG 36297 2808 6 the the DT 36297 2808 7 visibility visibility NN 36297 2808 8 of of IN 36297 2808 9 airplanes airplane NNS 36297 2808 10 at at IN 36297 2808 11 present present JJ 36297 2808 12 as as IN 36297 2808 13 viewed view VBN 36297 2808 14 from from IN 36297 2808 15 below below IN 36297 2808 16 is be VBZ 36297 2808 17 to to TO 36297 2808 18 increase increase VB 36297 2808 19 the the DT 36297 2808 20 brightness brightness NN 36297 2808 21 by by IN 36297 2808 22 the the DT 36297 2808 23 diffuse diffuse NN 36297 2808 24 transmission transmission NN 36297 2808 25 of of IN 36297 2808 26 direct direct JJ 36297 2808 27 sun sun NN 36297 2808 28 - - HYPH 36297 2808 29 light light NN 36297 2808 30 on on IN 36297 2808 31 clear clear JJ 36297 2808 32 days day NNS 36297 2808 33 . . . 36297 2809 1 On on IN 36297 2809 2 overcast overcast JJ 36297 2809 3 days day NNS 36297 2809 4 clouds cloud NNS 36297 2809 5 and and CC 36297 2809 6 haze haze NN 36297 2809 7 must must MD 36297 2809 8 be be VB 36297 2809 9 depended depend VBN 36297 2809 10 upon upon IN 36297 2809 11 to to TO 36297 2809 12 screen screen VB 36297 2809 13 the the DT 36297 2809 14 craft craft NN 36297 2809 15 . . . 36297 2810 1 In in IN 36297 2810 2 considering consider VBG 36297 2810 3 these these DT 36297 2810 4 aspects aspect NNS 36297 2810 5 it -PRON- PRP 36297 2810 6 is be VBZ 36297 2810 7 well well JJ 36297 2810 8 to to TO 36297 2810 9 recall recall VB 36297 2810 10 that that IN 36297 2810 11 the the DT 36297 2810 12 two two CD 36297 2810 13 sources source NNS 36297 2810 14 of of IN 36297 2810 15 light light NN 36297 2810 16 are be VBP 36297 2810 17 the the DT 36297 2810 18 sun sun NN 36297 2810 19 and and CC 36297 2810 20 the the DT 36297 2810 21 sky sky NN 36297 2810 22 . . . 36297 2811 1 Assuming assume VBG 36297 2811 2 the the DT 36297 2811 3 sun sun NN 36297 2811 4 to to TO 36297 2811 5 contribute contribute VB 36297 2811 6 80 80 CD 36297 2811 7 per per NN 36297 2811 8 cent cent NN 36297 2811 9 of of IN 36297 2811 10 the the DT 36297 2811 11 total total JJ 36297 2811 12 light light NN 36297 2811 13 which which WDT 36297 2811 14 reaches reach VBZ 36297 2811 15 the the DT 36297 2811 16 upper upper JJ 36297 2811 17 side side NN 36297 2811 18 of of IN 36297 2811 19 an an DT 36297 2811 20 opaque opaque JJ 36297 2811 21 horizontal horizontal JJ 36297 2811 22 diffusing diffusing NN 36297 2811 23 surface surface NN 36297 2811 24 at at IN 36297 2811 25 midday midday NN 36297 2811 26 at at IN 36297 2811 27 the the DT 36297 2811 28 earth earth NN 36297 2811 29 and and CC 36297 2811 30 assuming assume VBG 36297 2811 31 the the DT 36297 2811 32 sky sky NN 36297 2811 33 to to TO 36297 2811 34 be be VB 36297 2811 35 cloudless cloudless JJ 36297 2811 36 and and CC 36297 2811 37 uniform uniform JJ 36297 2811 38 in in IN 36297 2811 39 brightness brightness NN 36297 2811 40 , , , 36297 2811 41 then then RB 36297 2811 42 the the DT 36297 2811 43 brightness brightness NN 36297 2811 44 of of IN 36297 2811 45 the the DT 36297 2811 46 horizontal horizontal JJ 36297 2811 47 upper upper JJ 36297 2811 48 surface surface NN 36297 2811 49 will will MD 36297 2811 50 equal equal VB 36297 2811 51 5 5 CD 36297 2811 52 _ _ NNP 36297 2811 53 RB RB NNP 36297 2811 54 _ _ NNP 36297 2811 55 , , , 36297 2811 56 where where WRB 36297 2811 57 _ _ NNP 36297 2811 58 R R NNP 36297 2811 59 _ _ NNP 36297 2811 60 is be VBZ 36297 2811 61 the the DT 36297 2811 62 reflection reflection NN 36297 2811 63 - - HYPH 36297 2811 64 factor factor NN 36297 2811 65 of of IN 36297 2811 66 the the DT 36297 2811 67 surface surface NN 36297 2811 68 and and CC 36297 2811 69 _ _ NNP 36297 2811 70 B B NNP 36297 2811 71 _ _ NNP 36297 2811 72 is be VBZ 36297 2811 73 the the DT 36297 2811 74 brightness brightness NN 36297 2811 75 ( ( -LRB- 36297 2811 76 different different JJ 36297 2811 77 in in IN 36297 2811 78 the the DT 36297 2811 79 two two CD 36297 2811 80 cases case NNS 36297 2811 81 ) ) -RRB- 36297 2811 82 of of IN 36297 2811 83 the the DT 36297 2811 84 sky sky NN 36297 2811 85 . . . 36297 2812 1 On on IN 36297 2812 2 a a DT 36297 2812 3 uniformly uniformly JJ 36297 2812 4 overcast overcast JJ 36297 2812 5 day day NN 36297 2812 6 the the DT 36297 2812 7 brightness brightness NN 36297 2812 8 of of IN 36297 2812 9 the the DT 36297 2812 10 surface surface NN 36297 2812 11 would would MD 36297 2812 12 be be VB 36297 2812 13 equal equal JJ 36297 2812 14 to to IN 36297 2812 15 _ _ NNP 36297 2812 16 RB RB NNP 36297 2812 17 _ _ NNP 36297 2812 18 . . . 36297 2813 1 Now now RB 36297 2813 2 assuming assume VBG 36297 2813 3 _ _ NNP 36297 2813 4 R{e r{e XX 36297 2813 5 } } -RRB- 36297 2813 6 _ _ NNP 36297 2813 7 to to TO 36297 2813 8 be be VB 36297 2813 9 the the DT 36297 2813 10 mean mean JJ 36297 2813 11 reflection reflection NN 36297 2813 12 - - HYPH 36297 2813 13 factor factor NN 36297 2813 14 of of IN 36297 2813 15 the the DT 36297 2813 16 earth earth NN 36297 2813 17 , , , 36297 2813 18 then then RB 36297 2813 19 the the DT 36297 2813 20 lower low JJR 36297 2813 21 side side NN 36297 2813 22 of of IN 36297 2813 23 a a DT 36297 2813 24 horizontal horizontal JJ 36297 2813 25 opaque opaque JJ 36297 2813 26 surface surface NN 36297 2813 27 suspended suspend VBN 36297 2813 28 in in IN 36297 2813 29 the the DT 36297 2813 30 air air NN 36297 2813 31 would would MD 36297 2813 32 receive receive VB 36297 2813 33 light light NN 36297 2813 34 in in IN 36297 2813 35 proportion proportion NN 36297 2813 36 to to IN 36297 2813 37 _ _ NNP 36297 2813 38 R{e}B R{e}B NNP 36297 2813 39 _ _ NNP 36297 2813 40 . . . 36297 2814 1 If if IN 36297 2814 2 this this DT 36297 2814 3 lower low JJR 36297 2814 4 surface surface NN 36297 2814 5 were be VBD 36297 2814 6 a a DT 36297 2814 7 perfect perfect JJ 36297 2814 8 mirror mirror NN 36297 2814 9 or or CC 36297 2814 10 a a DT 36297 2814 11 perfectly perfectly RB 36297 2814 12 reflecting reflect VBG 36297 2814 13 and and CC 36297 2814 14 diffusing diffuse VBG 36297 2814 15 surface surface NN 36297 2814 16 its -PRON- PRP$ 36297 2814 17 brightness brightness NN 36297 2814 18 would would MD 36297 2814 19 equal equal VB 36297 2814 20 5 5 CD 36297 2814 21 _ _ NNP 36297 2814 22 R{e}B r{e}b NN 36297 2814 23 _ _ NNP 36297 2814 24 on on IN 36297 2814 25 the the DT 36297 2814 26 sunny sunny JJ 36297 2814 27 day day NN 36297 2814 28 and and CC 36297 2814 29 _ _ NNP 36297 2814 30 R{e}B R{e}B NNP 36297 2814 31 _ _ NNP 36297 2814 32 on on IN 36297 2814 33 the the DT 36297 2814 34 overcast overcast JJ 36297 2814 35 day day NN 36297 2814 36 where where WRB 36297 2814 37 _ _ NNP 36297 2814 38 B B NNP 36297 2814 39 _ _ NNP 36297 2814 40 is be VBZ 36297 2814 41 the the DT 36297 2814 42 value value NN 36297 2814 43 ( ( -LRB- 36297 2814 44 different different JJ 36297 2814 45 in in IN 36297 2814 46 the the DT 36297 2814 47 two two CD 36297 2814 48 cases case NNS 36297 2814 49 ) ) -RRB- 36297 2814 50 of of IN 36297 2814 51 the the DT 36297 2814 52 brightness brightness NN 36297 2814 53 of of IN 36297 2814 54 the the DT 36297 2814 55 uniform uniform JJ 36297 2814 56 sky sky NN 36297 2814 57 . . . 36297 2815 1 The the DT 36297 2815 2 surface surface NN 36297 2815 3 can can MD 36297 2815 4 never never RB 36297 2815 5 be be VB 36297 2815 6 a a DT 36297 2815 7 perfect perfect JJ 36297 2815 8 reflector reflector NN 36297 2815 9 , , , 36297 2815 10 so so RB 36297 2815 11 on on IN 36297 2815 12 an an DT 36297 2815 13 overcast overcast JJ 36297 2815 14 day day NN 36297 2815 15 its -PRON- PRP$ 36297 2815 16 brightness brightness NN 36297 2815 17 will will MD 36297 2815 18 be be VB 36297 2815 19 a a DT 36297 2815 20 fraction fraction NN 36297 2815 21 ( ( -LRB- 36297 2815 22 _ _ NNP 36297 2815 23 RR{e RR{e NNP 36297 2815 24 } } -RRB- 36297 2815 25 _ _ NNP 36297 2815 26 ) ) -RRB- 36297 2815 27 of of IN 36297 2815 28 the the DT 36297 2815 29 brightness brightness NN 36297 2815 30 _ _ NNP 36297 2815 31 B B NNP 36297 2815 32 _ _ NNP 36297 2815 33 of of IN 36297 2815 34 the the DT 36297 2815 35 uniform uniform JJ 36297 2815 36 sky sky NN 36297 2815 37 . . . 36297 2816 1 Inasmuch inasmuch JJ 36297 2816 2 as as IN 36297 2816 3 _ _ NNP 36297 2816 4 R{e R{e NNP 36297 2816 5 } } -RRB- 36297 2816 6 _ _ NNP 36297 2816 7 is be VBZ 36297 2816 8 a a DT 36297 2816 9 very very RB 36297 2816 10 small small JJ 36297 2816 11 value value NN 36297 2816 12 it -PRON- PRP 36297 2816 13 is be VBZ 36297 2816 14 seen see VBN 36297 2816 15 that that DT 36297 2816 16 low low JJ 36297 2816 17 visibility visibility NN 36297 2816 18 of of IN 36297 2816 19 airplanes airplane NNS 36297 2816 20 as as IN 36297 2816 21 viewed view VBN 36297 2816 22 from from IN 36297 2816 23 below below IN 36297 2816 24 generally generally RB 36297 2816 25 can can MD 36297 2816 26 not not RB 36297 2816 27 be be VB 36297 2816 28 attained attain VBN 36297 2816 29 on on IN 36297 2816 30 an an DT 36297 2816 31 overcast overcast JJ 36297 2816 32 day day NN 36297 2816 33 . . . 36297 2817 1 It -PRON- PRP 36297 2817 2 can can MD 36297 2817 3 be be VB 36297 2817 4 approached approach VBN 36297 2817 5 on on IN 36297 2817 6 a a DT 36297 2817 7 sunny sunny JJ 36297 2817 8 day day NN 36297 2817 9 and and CC 36297 2817 10 even even RB 36297 2817 11 realized realize VBN 36297 2817 12 by by IN 36297 2817 13 adopting adopt VBG 36297 2817 14 the the DT 36297 2817 15 expedient expedient NN 36297 2817 16 already already RB 36297 2817 17 mentioned mention VBN 36297 2817 18 . . . 36297 2818 1 Further further JJ 36297 2818 2 computations computation NNS 36297 2818 3 are be VBP 36297 2818 4 to to TO 36297 2818 5 be be VB 36297 2818 6 found find VBN 36297 2818 7 elsewhere elsewhere RB 36297 2818 8 . . . 36297 2819 1 [ [ -LRB- 36297 2819 2 12 12 CD 36297 2819 3 ] ] -RRB- 36297 2819 4 Seasonable seasonable JJ 36297 2819 5 changes change NNS 36297 2819 6 present present VBP 36297 2819 7 no no DT 36297 2819 8 difficulties difficulty NNS 36297 2819 9 , , , 36297 2819 10 for for IN 36297 2819 11 from from IN 36297 2819 12 a a DT 36297 2819 13 practical practical JJ 36297 2819 14 standpoint standpoint NN 36297 2819 15 only only RB 36297 2819 16 summer summer NN 36297 2819 17 and and CC 36297 2819 18 winter winter NN 36297 2819 19 need nee MD 36297 2819 20 be be VB 36297 2819 21 generally generally RB 36297 2819 22 considered consider VBN 36297 2819 23 . . . 36297 2820 1 If if IN 36297 2820 2 the the DT 36297 2820 3 earth earth NN 36297 2820 4 is be VBZ 36297 2820 5 covered cover VBN 36297 2820 6 with with IN 36297 2820 7 snow snow NN 36297 2820 8 an an DT 36297 2820 9 airplane airplane NN 36297 2820 10 covered cover VBN 36297 2820 11 completely completely RB 36297 2820 12 with with IN 36297 2820 13 white white JJ 36297 2820 14 or or CC 36297 2820 15 gray gray JJ 36297 2820 16 paint paint NN 36297 2820 17 would would MD 36297 2820 18 be be VB 36297 2820 19 fairly fairly RB 36297 2820 20 satisfactory satisfactory JJ 36297 2820 21 as as IN 36297 2820 22 viewed view VBN 36297 2820 23 from from IN 36297 2820 24 above above RB 36297 2820 25 , , , 36297 2820 26 and and CC 36297 2820 27 if if IN 36297 2820 28 a a DT 36297 2820 29 certain certain JJ 36297 2820 30 shade shade NN 36297 2820 31 of of IN 36297 2820 32 a a DT 36297 2820 33 blue blue JJ 36297 2820 34 tint tint NN 36297 2820 35 be be VB 36297 2820 36 applied apply VBN 36297 2820 37 to to IN 36297 2820 38 the the DT 36297 2820 39 lower low JJR 36297 2820 40 surfaces surface NNS 36297 2820 41 , , , 36297 2820 42 low low JJ 36297 2820 43 visibility visibility NN 36297 2820 44 as as IN 36297 2820 45 viewed view VBN 36297 2820 46 from from IN 36297 2820 47 below below IN 36297 2820 48 would would MD 36297 2820 49 result result VB 36297 2820 50 . . . 36297 2821 1 The the DT 36297 2821 2 white white JJ 36297 2821 3 paint paint NN 36297 2821 4 would would MD 36297 2821 5 possess possess VB 36297 2821 6 a a DT 36297 2821 7 reflection reflection NN 36297 2821 8 - - HYPH 36297 2821 9 factor factor NN 36297 2821 10 about about RB 36297 2821 11 equal equal JJ 36297 2821 12 to to IN 36297 2821 13 that that DT 36297 2821 14 of of IN 36297 2821 15 snow snow NN 36297 2821 16 , , , 36297 2821 17 thus thus RB 36297 2821 18 providing provide VBG 36297 2821 19 low low JJ 36297 2821 20 visibility visibility NN 36297 2821 21 from from IN 36297 2821 22 above above RB 36297 2821 23 . . . 36297 2822 1 Inasmuch inasmuch IN 36297 2822 2 as as IN 36297 2822 3 the the DT 36297 2822 4 reflection reflection NN 36297 2822 5 - - HYPH 36297 2822 6 factor factor NN 36297 2822 7 of of IN 36297 2822 8 snow snow NN 36297 2822 9 is be VBZ 36297 2822 10 very very RB 36297 2822 11 high high JJ 36297 2822 12 , , , 36297 2822 13 the the DT 36297 2822 14 white white JJ 36297 2822 15 lower low JJR 36297 2822 16 sides side NNS 36297 2822 17 of of IN 36297 2822 18 an an DT 36297 2822 19 airplane airplane NN 36297 2822 20 would would MD 36297 2822 21 receive receive VB 36297 2822 22 a a DT 36297 2822 23 great great JJ 36297 2822 24 deal deal NN 36297 2822 25 more more JJR 36297 2822 26 light light NN 36297 2822 27 in in IN 36297 2822 28 winter winter NN 36297 2822 29 than than IN 36297 2822 30 they -PRON- PRP 36297 2822 31 would would MD 36297 2822 32 in in IN 36297 2822 33 summer summer NN 36297 2822 34 . . . 36297 2823 1 Obviously obviously RB 36297 2823 2 , , , 36297 2823 3 a a DT 36297 2823 4 blue blue JJ 36297 2823 5 tint tint NN 36297 2823 6 is be VBZ 36297 2823 7 necessary necessary JJ 36297 2823 8 for for IN 36297 2823 9 low low JJ 36297 2823 10 visibility visibility NN 36297 2823 11 against against IN 36297 2823 12 the the DT 36297 2823 13 sky sky NN 36297 2823 14 , , , 36297 2823 15 but but CC 36297 2823 16 color color NN 36297 2823 17 has have VBZ 36297 2823 18 not not RB 36297 2823 19 been be VBN 36297 2823 20 primarily primarily RB 36297 2823 21 considered consider VBN 36297 2823 22 in in IN 36297 2823 23 the the DT 36297 2823 24 preceding precede VBG 36297 2823 25 paragraphs paragraph NNS 36297 2823 26 because because IN 36297 2823 27 the the DT 36297 2823 28 chief chief JJ 36297 2823 29 difficulty difficulty NN 36297 2823 30 in in IN 36297 2823 31 achieving achieve VBG 36297 2823 32 low low JJ 36297 2823 33 visibility visibility NN 36297 2823 34 from from IN 36297 2823 35 below below IN 36297 2823 36 lies lie NNS 36297 2823 37 in in IN 36297 2823 38 obtaining obtain VBG 36297 2823 39 brightness brightness NN 36297 2823 40 of of IN 36297 2823 41 the the DT 36297 2823 42 proper proper JJ 36297 2823 43 order order NN 36297 2823 44 of of IN 36297 2823 45 magnitude magnitude NN 36297 2823 46 . . . 36297 2824 1 In in IN 36297 2824 2 winter winter NN 36297 2824 3 the the DT 36297 2824 4 barren barren JJ 36297 2824 5 ground ground NN 36297 2824 6 would would MD 36297 2824 7 be be VB 36297 2824 8 approximately approximately RB 36297 2824 9 of of IN 36297 2824 10 the the DT 36297 2824 11 same same JJ 36297 2824 12 color color NN 36297 2824 13 and and CC 36297 2824 14 reflection reflection NN 36297 2824 15 - - HYPH 36297 2824 16 factor factor NN 36297 2824 17 as as IN 36297 2824 18 in in IN 36297 2824 19 summer summer NN 36297 2824 20 , , , 36297 2824 21 so so IN 36297 2824 22 it -PRON- PRP 36297 2824 23 would would MD 36297 2824 24 not not RB 36297 2824 25 be be VB 36297 2824 26 difficult difficult JJ 36297 2824 27 to to TO 36297 2824 28 take take VB 36297 2824 29 this this DT 36297 2824 30 into into IN 36297 2824 31 consideration consideration NN 36297 2824 32 . . . 36297 2825 1 Seaplanes seaplane NNS 36297 2825 2 whose whose WP$ 36297 2825 3 backgrounds background NNS 36297 2825 4 generally generally RB 36297 2825 5 consist consist VBP 36297 2825 6 of of IN 36297 2825 7 water water NN 36297 2825 8 would would MD 36297 2825 9 be be VB 36297 2825 10 painted paint VBN 36297 2825 11 of of IN 36297 2825 12 the the DT 36297 2825 13 color color NN 36297 2825 14 and and CC 36297 2825 15 brightness brightness NN 36297 2825 16 of of IN 36297 2825 17 water water NN 36297 2825 18 with with IN 36297 2825 19 perhaps perhaps RB 36297 2825 20 a a DT 36297 2825 21 slight slight JJ 36297 2825 22 mottling mottling NN 36297 2825 23 . . . 36297 2826 1 The the DT 36297 2826 2 color color NN 36297 2826 3 would would MD 36297 2826 4 generally generally RB 36297 2826 5 be be VB 36297 2826 6 a a DT 36297 2826 7 very very RB 36297 2826 8 dark dark JJ 36297 2826 9 shade shade NN 36297 2826 10 , , , 36297 2826 11 approximating approximate VBG 36297 2826 12 blue blue JJ 36297 2826 13 - - HYPH 36297 2826 14 green green JJ 36297 2826 15 in in IN 36297 2826 16 hue hue NNP 36297 2826 17 . . . 36297 2827 1 Aircraft aircraft NN 36297 2827 2 for for IN 36297 2827 3 night night NN 36297 2827 4 use use NN 36297 2827 5 would would MD 36297 2827 6 be be VB 36297 2827 7 treated treat VBN 36297 2827 8 in in IN 36297 2827 9 the the DT 36297 2827 10 same same JJ 36297 2827 11 manner manner NN 36297 2827 12 as as IN 36297 2827 13 aircraft aircraft NN 36297 2827 14 for for IN 36297 2827 15 day day NN 36297 2827 16 use use NN 36297 2827 17 , , , 36297 2827 18 if if IN 36297 2827 19 the the DT 36297 2827 20 moonlight moonlight NN 36297 2827 21 is be VBZ 36297 2827 22 to to TO 36297 2827 23 be be VB 36297 2827 24 considered consider VBN 36297 2827 25 a a DT 36297 2827 26 dominant dominant JJ 36297 2827 27 factor factor NN 36297 2827 28 . . . 36297 2828 1 This this DT 36297 2828 2 is be VBZ 36297 2828 3 one one CD 36297 2828 4 of of IN 36297 2828 5 the the DT 36297 2828 6 cases case NNS 36297 2828 7 where where WRB 36297 2828 8 the the DT 36297 2828 9 judgment judgment NN 36297 2828 10 must must MD 36297 2828 11 be be VB 36297 2828 12 based base VBN 36297 2828 13 on on IN 36297 2828 14 actual actual JJ 36297 2828 15 experience experience NN 36297 2828 16 . . . 36297 2829 1 It -PRON- PRP 36297 2829 2 appears appear VBZ 36297 2829 3 that that IN 36297 2829 4 the the DT 36297 2829 5 great great JJ 36297 2829 6 enemy enemy NN 36297 2829 7 of of IN 36297 2829 8 night night NN 36297 2829 9 raiders raider NNS 36297 2829 10 is be VBZ 36297 2829 11 the the DT 36297 2829 12 searchlight searchlight NN 36297 2829 13 . . . 36297 2830 1 If if IN 36297 2830 2 this this DT 36297 2830 3 is be VBZ 36297 2830 4 true true JJ 36297 2830 5 the the DT 36297 2830 6 obvious obvious JJ 36297 2830 7 expedient expedient NN 36297 2830 8 is be VBZ 36297 2830 9 to to TO 36297 2830 10 paint paint VB 36297 2830 11 the the DT 36297 2830 12 craft craft NN 36297 2830 13 a a DT 36297 2830 14 dull dull JJ 36297 2830 15 jet jet NN 36297 2830 16 black black NN 36297 2830 17 . . . 36297 2831 1 Experiments experiment NNS 36297 2831 2 indicate indicate VBP 36297 2831 3 that that IN 36297 2831 4 it -PRON- PRP 36297 2831 5 is be VBZ 36297 2831 6 more more RBR 36297 2831 7 difficult difficult JJ 36297 2831 8 to to TO 36297 2831 9 pick pick VB 36297 2831 10 up up RP 36297 2831 11 a a DT 36297 2831 12 black black JJ 36297 2831 13 craft craft NN 36297 2831 14 than than IN 36297 2831 15 a a DT 36297 2831 16 gray gray JJ 36297 2831 17 or or CC 36297 2831 18 white white JJ 36297 2831 19 one one CD 36297 2831 20 and and CC 36297 2831 21 also also RB 36297 2831 22 it -PRON- PRP 36297 2831 23 is be VBZ 36297 2831 24 more more RBR 36297 2831 25 difficult difficult JJ 36297 2831 26 to to TO 36297 2831 27 hold hold VB 36297 2831 28 it -PRON- PRP 36297 2831 29 in in IN 36297 2831 30 the the DT 36297 2831 31 beam beam NN 36297 2831 32 of of IN 36297 2831 33 the the DT 36297 2831 34 searchlight searchlight NN 36297 2831 35 . . . 36297 2832 1 This this DT 36297 2832 2 can can MD 36297 2832 3 be be VB 36297 2832 4 readily readily RB 36297 2832 5 proved prove VBN 36297 2832 6 by by IN 36297 2832 7 the the DT 36297 2832 8 use use NN 36297 2832 9 of of IN 36297 2832 10 black black JJ 36297 2832 11 , , , 36297 2832 12 gray gray JJ 36297 2832 13 , , , 36297 2832 14 and and CC 36297 2832 15 white white JJ 36297 2832 16 cards card NNS 36297 2832 17 in in IN 36297 2832 18 the the DT 36297 2832 19 beam beam NN 36297 2832 20 of of IN 36297 2832 21 an an DT 36297 2832 22 automobile automobile NN 36297 2832 23 head head NN 36297 2832 24 - - HYPH 36297 2832 25 light light NN 36297 2832 26 . . . 36297 2833 1 The the DT 36297 2833 2 white white JJ 36297 2833 3 card card NN 36297 2833 4 can can MD 36297 2833 5 be be VB 36297 2833 6 seen see VBN 36297 2833 7 in in IN 36297 2833 8 the the DT 36297 2833 9 outskirts outskirt NNS 36297 2833 10 of of IN 36297 2833 11 the the DT 36297 2833 12 beam beam NN 36297 2833 13 where where WRB 36297 2833 14 the the DT 36297 2833 15 gray gray JJ 36297 2833 16 or or CC 36297 2833 17 black black JJ 36297 2833 18 can can MD 36297 2833 19 not not RB 36297 2833 20 be be VB 36297 2833 21 seen see VBN 36297 2833 22 , , , 36297 2833 23 and and CC 36297 2833 24 the the DT 36297 2833 25 gray gray NN 36297 2833 26 can can MD 36297 2833 27 be be VB 36297 2833 28 picked pick VBN 36297 2833 29 up up RP 36297 2833 30 where where WRB 36297 2833 31 the the DT 36297 2833 32 black black JJ 36297 2833 33 one one CD 36297 2833 34 is be VBZ 36297 2833 35 invisible invisible JJ 36297 2833 36 . . . 36297 2834 1 The the DT 36297 2834 2 science science NN 36297 2834 3 of of IN 36297 2834 4 vision vision NN 36297 2834 5 accounts account VBZ 36297 2834 6 for for IN 36297 2834 7 this this DT 36297 2834 8 as as IN 36297 2834 9 it -PRON- PRP 36297 2834 10 does do VBZ 36297 2834 11 for for IN 36297 2834 12 many many JJ 36297 2834 13 other other JJ 36297 2834 14 questions question NNS 36297 2834 15 which which WDT 36297 2834 16 arise arise VBP 36297 2834 17 in in IN 36297 2834 18 the the DT 36297 2834 19 consideration consideration NN 36297 2834 20 of of IN 36297 2834 21 camouflage camouflage NN 36297 2834 22 or or CC 36297 2834 23 low low JJ 36297 2834 24 visibility visibility NN 36297 2834 25 . . . 36297 2835 1 Some some DT 36297 2835 2 attempts attempt NNS 36297 2835 3 have have VBP 36297 2835 4 been be VBN 36297 2835 5 made make VBN 36297 2835 6 to to TO 36297 2835 7 apply apply VB 36297 2835 8 the the DT 36297 2835 9 principle principle NN 36297 2835 10 of of IN 36297 2835 11 confusibility confusibility NN 36297 2835 12 to to IN 36297 2835 13 airplanes airplane NNS 36297 2835 14 as as IN 36297 2835 15 finally finally RB 36297 2835 16 developed develop VBN 36297 2835 17 for for IN 36297 2835 18 vessels vessel NNS 36297 2835 19 to to TO 36297 2835 20 circumvent circumvent VB 36297 2835 21 the the DT 36297 2835 22 submarine submarine NN 36297 2835 23 , , , 36297 2835 24 but but CC 36297 2835 25 the the DT 36297 2835 26 folly folly NN 36297 2835 27 of of IN 36297 2835 28 this this DT 36297 2835 29 appears appear VBZ 36297 2835 30 to to TO 36297 2835 31 be be VB 36297 2835 32 evident evident JJ 36297 2835 33 . . . 36297 2836 1 Air air NN 36297 2836 2 battles battle NNS 36297 2836 3 are be VBP 36297 2836 4 conducted conduct VBN 36297 2836 5 at at IN 36297 2836 6 terrific terrific JJ 36297 2836 7 speeds speed NNS 36297 2836 8 and and CC 36297 2836 9 with with IN 36297 2836 10 skillful skillful JJ 36297 2836 11 maneuvering maneuvering NN 36297 2836 12 . . . 36297 2837 1 Triggers trigger NNS 36297 2837 2 are be VBP 36297 2837 3 pulled pull VBN 36297 2837 4 without without IN 36297 2837 5 computations computation NNS 36297 2837 6 and and CC 36297 2837 7 the the DT 36297 2837 8 whole whole JJ 36297 2837 9 activity activity NN 36297 2837 10 is be VBZ 36297 2837 11 almost almost RB 36297 2837 12 lightning lightning NN 36297 2837 13 - - : 36297 2837 14 like like JJ 36297 2837 15 . . . 36297 2838 1 To to TO 36297 2838 2 expect expect VB 36297 2838 3 to to TO 36297 2838 4 confuse confuse VB 36297 2838 5 an an DT 36297 2838 6 opponent opponent NN 36297 2838 7 as as IN 36297 2838 8 to to IN 36297 2838 9 the the DT 36297 2838 10 course course NN 36297 2838 11 and and CC 36297 2838 12 position position NN 36297 2838 13 of of IN 36297 2838 14 the the DT 36297 2838 15 airplane airplane NN 36297 2838 16 is be VBZ 36297 2838 17 folly folly NN 36297 2838 18 . . . 36297 2839 1 The the DT 36297 2839 2 camouflage camouflage NN 36297 2839 3 of of IN 36297 2839 4 observation observation NN 36297 2839 5 balloons balloon NNS 36297 2839 6 has have VBZ 36297 2839 7 not not RB 36297 2839 8 been be VBN 36297 2839 9 developed develop VBN 36297 2839 10 , , , 36297 2839 11 though though IN 36297 2839 12 experiments experiment NNS 36297 2839 13 were be VBD 36297 2839 14 being be VBG 36297 2839 15 considered consider VBN 36297 2839 16 in in IN 36297 2839 17 this this DT 36297 2839 18 direction direction NN 36297 2839 19 as as IN 36297 2839 20 the the DT 36297 2839 21 war war NN 36297 2839 22 closed close VBD 36297 2839 23 . . . 36297 2840 1 Inasmuch inasmuch IN 36297 2840 2 as as IN 36297 2840 3 they -PRON- PRP 36297 2840 4 are be VBP 36297 2840 5 low low JJ 36297 2840 6 - - HYPH 36297 2840 7 altitude altitude NN 36297 2840 8 crafts craft NNS 36297 2840 9 it -PRON- PRP 36297 2840 10 appears appear VBZ 36297 2840 11 that that IN 36297 2840 12 they -PRON- PRP 36297 2840 13 would would MD 36297 2840 14 be be VB 36297 2840 15 best well RBS 36297 2840 16 camouflaged camouflage VBN 36297 2840 17 for for IN 36297 2840 18 the the DT 36297 2840 19 earth earth NN 36297 2840 20 as as IN 36297 2840 21 a a DT 36297 2840 22 background background NN 36297 2840 23 . . . 36297 2841 1 Their -PRON- PRP$ 36297 2841 2 enemies enemy NNS 36297 2841 3 pounce pounce VBP 36297 2841 4 down down RP 36297 2841 5 upon upon IN 36297 2841 6 them -PRON- PRP 36297 2841 7 from from IN 36297 2841 8 the the DT 36297 2841 9 sky sky NN 36297 2841 10 so so IN 36297 2841 11 that that IN 36297 2841 12 low low JJ 36297 2841 13 visibility visibility NN 36297 2841 14 from from IN 36297 2841 15 above above RB 36297 2841 16 seems seem VBZ 36297 2841 17 to to TO 36297 2841 18 be be VB 36297 2841 19 the the DT 36297 2841 20 better well JJR 36297 2841 21 choice choice NN 36297 2841 22 . . . 36297 2842 1 In in IN 36297 2842 2 the the DT 36297 2842 3 foregoing foregoing NN 36297 2842 4 it -PRON- PRP 36297 2842 5 has have VBZ 36297 2842 6 been be VBN 36297 2842 7 aimed aim VBN 36297 2842 8 to to TO 36297 2842 9 give give VB 36297 2842 10 the the DT 36297 2842 11 reader reader NN 36297 2842 12 the the DT 36297 2842 13 general general JJ 36297 2842 14 underlying underlying JJ 36297 2842 15 principles principle NNS 36297 2842 16 of of IN 36297 2842 17 camouflage camouflage NN 36297 2842 18 and and CC 36297 2842 19 low low JJ 36297 2842 20 visibility visibility NN 36297 2842 21 , , , 36297 2842 22 but but CC 36297 2842 23 at at IN 36297 2842 24 best good JJS 36297 2842 25 this this DT 36297 2842 26 is be VBZ 36297 2842 27 only only RB 36297 2842 28 a a DT 36297 2842 29 résumé résumé NN 36297 2842 30 . . . 36297 2843 1 In in IN 36297 2843 2 the the DT 36297 2843 3 following follow VBG 36297 2843 4 references reference NNS 36297 2843 5 will will MD 36297 2843 6 be be VB 36297 2843 7 found find VBN 36297 2843 8 more more RBR 36297 2843 9 extensive extensive JJ 36297 2843 10 discussions discussion NNS 36297 2843 11 of of IN 36297 2843 12 various various JJ 36297 2843 13 phases phase NNS 36297 2843 14 of of IN 36297 2843 15 the the DT 36297 2843 16 subject subject NN 36297 2843 17 . . . 36297 2844 1 REFERENCES reference NNS 36297 2844 2 1 1 CD 36297 2844 3 . . . 36297 2845 1 A a DT 36297 2845 2 Study Study NNP 36297 2845 3 of of IN 36297 2845 4 Zöllner Zöllner NNP 36297 2845 5 's 's POS 36297 2845 6 Figures Figures NNPS 36297 2845 7 and and CC 36297 2845 8 Other other JJ 36297 2845 9 Related Related NNP 36297 2845 10 Figures Figures NNPS 36297 2845 11 , , , 36297 2845 12 J. J. NNP 36297 2845 13 Jastrow Jastrow NNP 36297 2845 14 , , , 36297 2845 15 Amer Amer NNP 36297 2845 16 . . . 36297 2846 1 Jour Jour NNP 36297 2846 2 . . . 36297 2847 1 of of IN 36297 2847 2 Psych psych NN 36297 2847 3 . . . 36297 2848 1 1891 1891 CD 36297 2848 2 , , , 36297 2848 3 4 4 CD 36297 2848 4 , , , 36297 2848 5 p. p. NN 36297 2848 6 381 381 CD 36297 2848 7 . . . 36297 2849 1 2 2 LS 36297 2849 2 . . . 36297 2850 1 A a DT 36297 2850 2 Study Study NNP 36297 2850 3 of of IN 36297 2850 4 Geometrical Geometrical NNP 36297 2850 5 Illusions Illusions NNPS 36297 2850 6 , , , 36297 2850 7 C. C. NNP 36297 2850 8 H. H. NNP 36297 2850 9 Judd Judd NNP 36297 2850 10 , , , 36297 2850 11 Psych Psych NNP 36297 2850 12 . . . 36297 2851 1 Rev. Rev. NNP 36297 2852 1 1899 1899 CD 36297 2852 2 , , , 36297 2852 3 6 6 CD 36297 2852 4 , , , 36297 2852 5 p. p. NN 36297 2852 6 241 241 CD 36297 2852 7 . . . 36297 2853 1 3 3 LS 36297 2853 2 . . . 36297 2854 1 Visual visual JJ 36297 2854 2 Illusions illusion NNS 36297 2854 3 of of IN 36297 2854 4 Depth depth NN 36297 2854 5 , , , 36297 2854 6 H. H. NNP 36297 2854 7 A. a. NN 36297 2854 8 Carr Carr NNP 36297 2854 9 , , , 36297 2854 10 Psych Psych NNP 36297 2854 11 . . . 36297 2855 1 Rev. Rev. NNP 36297 2856 1 1909 1909 CD 36297 2856 2 , , , 36297 2856 3 16 16 CD 36297 2856 4 , , , 36297 2856 5 p. p. NN 36297 2856 6 219 219 CD 36297 2856 7 . . . 36297 2857 1 4 4 LS 36297 2857 2 . . . 36297 2858 1 Irradiation Irradiation NNP 36297 2858 2 of of IN 36297 2858 3 Light Light NNP 36297 2858 4 , , , 36297 2858 5 F. F. NNP 36297 2858 6 P. P. NNP 36297 2858 7 Boswell Boswell NNP 36297 2858 8 , , , 36297 2858 9 Psych Psych NNP 36297 2858 10 . . . 36297 2859 1 Bul Bul NNP 36297 2859 2 . . . 36297 2860 1 1905 1905 CD 36297 2860 2 , , , 36297 2860 3 2 2 CD 36297 2860 4 , , , 36297 2860 5 p. p. NN 36297 2860 6 200 200 CD 36297 2860 7 . . . 36297 2861 1 5 5 CD 36297 2861 2 . . . 36297 2862 1 Retiring retire VBG 36297 2862 2 and and CC 36297 2862 3 Advancing Advancing NNP 36297 2862 4 Colors Colors NNPS 36297 2862 5 , , , 36297 2862 6 M. M. NNP 36297 2862 7 Luckiesh Luckiesh NNP 36297 2862 8 , , , 36297 2862 9 Amer Amer NNP 36297 2862 10 . . . 36297 2863 1 Jour Jour NNP 36297 2863 2 . . . 36297 2864 1 Psych psych NN 36297 2864 2 . . . 36297 2865 1 1918 1918 CD 36297 2865 2 , , , 36297 2865 3 29 29 CD 36297 2865 4 , , , 36297 2865 5 p. p. NN 36297 2865 6 182 182 CD 36297 2865 7 . . . 36297 2866 1 6 6 CD 36297 2866 2 . . . 36297 2867 1 The the DT 36297 2867 2 Language Language NNP 36297 2867 3 of of IN 36297 2867 4 Color Color NNP 36297 2867 5 , , , 36297 2867 6 1918 1918 CD 36297 2867 7 , , , 36297 2867 8 M. M. NNP 36297 2867 9 Luckiesh Luckiesh NNP 36297 2867 10 . . . 36297 2868 1 7 7 LS 36297 2868 2 . . . 36297 2869 1 Apparent apparent JJ 36297 2869 2 Form Form NNP 36297 2869 3 of of IN 36297 2869 4 the the DT 36297 2869 5 Dome Dome NNP 36297 2869 6 of of IN 36297 2869 7 the the DT 36297 2869 8 Sky Sky NNP 36297 2869 9 , , , 36297 2869 10 Ann Ann NNP 36297 2869 11 . . . 36297 2870 1 d. d. NNP 36297 2870 2 Physik Physik NNP 36297 2870 3 , , , 36297 2870 4 1918 1918 CD 36297 2870 5 , , , 36297 2870 6 55 55 CD 36297 2870 7 , , , 36297 2870 8 p. p. NN 36297 2870 9 387 387 CD 36297 2870 10 ; ; : 36297 2870 11 Sci Sci NNP 36297 2870 12 . . . 36297 2871 1 Abs abs NN 36297 2871 2 . . . 36297 2872 1 1918 1918 CD 36297 2872 2 , , , 36297 2872 3 No no UH 36297 2872 4 . . . 36297 2873 1 1147 1147 CD 36297 2873 2 . . . 36297 2874 1 8 8 LS 36297 2874 2 . . . 36297 2875 1 Course course NN 36297 2875 2 on on IN 36297 2875 3 Optics Optics NNP 36297 2875 4 , , , 36297 2875 5 1738 1738 CD 36297 2875 6 , , , 36297 2875 7 Robert Robert NNP 36297 2875 8 Smith Smith NNP 36297 2875 9 . . . 36297 2876 1 9 9 CD 36297 2876 2 . . . 36297 2877 1 Color color NN 36297 2877 2 and and CC 36297 2877 3 Its -PRON- PRP$ 36297 2877 4 Applications Applications NNPS 36297 2877 5 , , , 36297 2877 6 1915 1915 CD 36297 2877 7 and and CC 36297 2877 8 1921 1921 CD 36297 2877 9 ; ; : 36297 2877 10 Light Light NNP 36297 2877 11 and and CC 36297 2877 12 Shade Shade NNP 36297 2877 13 and and CC 36297 2877 14 Their -PRON- PRP$ 36297 2877 15 Applications Applications NNPS 36297 2877 16 , , , 36297 2877 17 1916 1916 CD 36297 2877 18 , , , 36297 2877 19 M. M. NNP 36297 2877 20 Luckiesh Luckiesh NNP 36297 2877 21 . . . 36297 2878 1 10 10 CD 36297 2878 2 . . . 36297 2879 1 Report report NN 36297 2879 2 of of IN 36297 2879 3 The the DT 36297 2879 4 Submarine Submarine NNP 36297 2879 5 Defense Defense NNP 36297 2879 6 Association Association NNP 36297 2879 7 , , , 36297 2879 8 L. L. NNP 36297 2879 9 T. T. NNP 36297 2879 10 Bates Bates NNP 36297 2879 11 and and CC 36297 2879 12 L. L. NNP 36297 2879 13 A. A. NNP 36297 2879 14 Jones Jones NNP 36297 2879 15 . . . 36297 2880 1 11 11 CD 36297 2880 2 . . . 36297 2881 1 Marine Marine NNP 36297 2881 2 Camouflage Camouflage NNP 36297 2881 3 Design Design NNP 36297 2881 4 , , , 36297 2881 5 E. E. NNP 36297 2881 6 L. L. NNP 36297 2881 7 Warner Warner NNP 36297 2881 8 , , , 36297 2881 9 Trans Trans NNP 36297 2881 10 . . . 36297 2882 1 I. I. NNP 36297 2882 2 E. E. NNP 36297 2882 3 S. S. NNP 36297 2882 4 1919 1919 CD 36297 2882 5 , , , 36297 2882 6 14 14 CD 36297 2882 7 , , , 36297 2882 8 p. p. NN 36297 2882 9 215 215 CD 36297 2882 10 . . . 36297 2883 1 12 12 CD 36297 2883 2 . . . 36297 2884 1 The the DT 36297 2884 2 Visibility Visibility NNP 36297 2884 3 of of IN 36297 2884 4 Airplanes Airplanes NNPS 36297 2884 5 , , , 36297 2884 6 M. M. NNP 36297 2884 7 Luckiesh Luckiesh NNP 36297 2884 8 , , , 36297 2884 9 Jour Jour NNP 36297 2884 10 . . . 36297 2885 1 Frank Frank NNP 36297 2885 2 . . . 36297 2886 1 Inst inst RB 36297 2886 2 . . . 36297 2887 1 March March NNP 36297 2887 2 and and CC 36297 2887 3 April April NNP 36297 2887 4 , , , 36297 2887 5 1919 1919 CD 36297 2887 6 ; ; : 36297 2887 7 also also RB 36297 2887 8 Aerial Aerial NNP 36297 2887 9 Photometry Photometry NNP 36297 2887 10 , , , 36297 2887 11 Astrophys Astrophys NNP 36297 2887 12 . . . 36297 2888 1 Jour Jour NNP 36297 2888 2 . . . 36297 2889 1 1919 1919 CD 36297 2889 2 , , , 36297 2889 3 49 49 CD 36297 2889 4 , , , 36297 2889 5 p. p. NN 36297 2889 6 108 108 CD 36297 2889 7 . . . 36297 2890 1 13 13 CD 36297 2890 2 . . . 36297 2891 1 Jour Jour NNP 36297 2891 2 . . . 36297 2892 1 Amer amer NN 36297 2892 2 . . . 36297 2893 1 Opt Opt NNP 36297 2893 2 . . . 36297 2894 1 Soc Soc NNP 36297 2894 2 . . NNP 36297 2894 3 , , , 36297 2894 4 E. E. NNP 36297 2894 5 Karrer Karrer NNP 36297 2894 6 , , , 36297 2894 7 1921 1921 CD 36297 2894 8 . . . 36297 2895 1 The the DT 36297 2895 2 foregoing foregoing NN 36297 2895 3 are be VBP 36297 2895 4 only only RB 36297 2895 5 a a DT 36297 2895 6 few few JJ 36297 2895 7 references reference NNS 36297 2895 8 indicated indicate VBN 36297 2895 9 in in IN 36297 2895 10 the the DT 36297 2895 11 text text NN 36297 2895 12 . . . 36297 2896 1 Hundreds hundred NNS 36297 2896 2 of of IN 36297 2896 3 references reference NNS 36297 2896 4 are be VBP 36297 2896 5 available available JJ 36297 2896 6 and and CC 36297 2896 7 obviously obviously RB 36297 2896 8 it -PRON- PRP 36297 2896 9 is be VBZ 36297 2896 10 impracticable impracticable JJ 36297 2896 11 to to TO 36297 2896 12 include include VB 36297 2896 13 such such PDT 36297 2896 14 a a DT 36297 2896 15 list list NN 36297 2896 16 . . . 36297 2897 1 The the DT 36297 2897 2 most most RBS 36297 2897 3 fruitful fruitful JJ 36297 2897 4 sources source NNS 36297 2897 5 of of IN 36297 2897 6 references reference NNS 36297 2897 7 are be VBP 36297 2897 8 the the DT 36297 2897 9 general general JJ 36297 2897 10 works work NNS 36297 2897 11 on on IN 36297 2897 12 psychology psychology NN 36297 2897 13 . . . 36297 2898 1 E. E. NNP 36297 2898 2 B. B. NNP 36297 2898 3 Titchener Titchener NNP 36297 2898 4 's 's POS 36297 2898 5 Experimental Experimental NNP 36297 2898 6 Psychology Psychology NNP 36297 2898 7 ( ( -LRB- 36297 2898 8 vol vol NNP 36297 2898 9 . . . 36297 2899 1 1 1 LS 36297 2899 2 ) ) -RRB- 36297 2899 3 contains contain VBZ 36297 2899 4 an an DT 36297 2899 5 excellent excellent JJ 36297 2899 6 list list NN 36297 2899 7 . . . 36297 2900 1 A a DT 36297 2900 2 chapter chapter NN 36297 2900 3 on on IN 36297 2900 4 Space Space NNP 36297 2900 5 in in IN 36297 2900 6 William William NNP 36297 2900 7 James James NNP 36297 2900 8 ' ' POS 36297 2900 9 Principles Principles NNPS 36297 2900 10 of of IN 36297 2900 11 Psychology Psychology NNP 36297 2900 12 ( ( -LRB- 36297 2900 13 vol vol NNP 36297 2900 14 . . . 36297 2901 1 II II NNP 36297 2901 2 ) ) -RRB- 36297 2901 3 will will MD 36297 2901 4 be be VB 36297 2901 5 found find VBN 36297 2901 6 of of IN 36297 2901 7 interest interest NN 36297 2901 8 to to IN 36297 2901 9 those those DT 36297 2901 10 who who WP 36297 2901 11 wish wish VBP 36297 2901 12 to to TO 36297 2901 13 delve delve VB 36297 2901 14 deeper deeply RBR 36297 2901 15 into into IN 36297 2901 16 visual visual JJ 36297 2901 17 perception perception NN 36297 2901 18 . . . 36297 2902 1 Other other JJ 36297 2902 2 general general JJ 36297 2902 3 references reference NNS 36297 2902 4 are be VBP 36297 2902 5 Elements Elements NNPS 36297 2902 6 of of IN 36297 2902 7 Physiological physiological JJ 36297 2902 8 Psychology Psychology NNP 36297 2902 9 by by IN 36297 2902 10 Ladd Ladd NNP 36297 2902 11 and and CC 36297 2902 12 Woodworth Woodworth NNP 36297 2902 13 ; ; : 36297 2902 14 the the DT 36297 2902 15 works work NNS 36297 2902 16 of of IN 36297 2902 17 Helmholtz Helmholtz NNP 36297 2902 18 ; ; : 36297 2902 19 a a DT 36297 2902 20 contribution contribution NN 36297 2902 21 by by IN 36297 2902 22 Hering Hering NNP 36297 2902 23 in in IN 36297 2902 24 Hermann Hermann NNP 36297 2902 25 's 's POS 36297 2902 26 Handb Handb NNPS 36297 2902 27 . . . 36297 2903 1 d. d. NNP 36297 2903 2 Phys Phys NNP 36297 2903 3 . . . 36297 2904 1 Bk Bk NNP 36297 2904 2 . . . 36297 2905 1 III III NNP 36297 2905 2 , , , 36297 2905 3 part part NN 36297 2905 4 1 1 CD 36297 2905 5 ; ; : 36297 2905 6 Physiological physiological JJ 36297 2905 7 Psychology Psychology NNP 36297 2905 8 by by IN 36297 2905 9 Wundt Wundt NNP 36297 2905 10 ; ; : 36297 2905 11 E. E. NNP 36297 2905 12 B. B. NNP 36297 2905 13 Delabarre Delabarre NNP 36297 2905 14 , , , 36297 2905 15 Amer Amer NNP 36297 2905 16 . . . 36297 2906 1 Jour Jour NNP 36297 2906 2 . . . 36297 2907 1 Psych psych NN 36297 2907 2 . . . 36297 2908 1 1898 1898 CD 36297 2908 2 , , , 36297 2908 3 9 9 CD 36297 2908 4 , , , 36297 2908 5 p. p. NN 36297 2908 6 573 573 CD 36297 2908 7 ; ; : 36297 2908 8 W. W. NNP 36297 2908 9 Wundt Wundt NNP 36297 2908 10 , , , 36297 2908 11 Täuschungen Täuschungen NNP 36297 2908 12 , , , 36297 2908 13 p. p. NN 36297 2908 14 157 157 CD 36297 2908 15 and and CC 36297 2908 16 Philos Philos NNP 36297 2908 17 . . . 36297 2909 1 Stud Stud NNP 36297 2909 2 . . . 36297 2910 1 1898 1898 CD 36297 2910 2 , , , 36297 2910 3 14 14 CD 36297 2910 4 , , , 36297 2910 5 p. p. NN 36297 2910 6 1 1 CD 36297 2910 7 ; ; : 36297 2910 8 T. T. NNP 36297 2910 9 Lipps Lipps NNP 36297 2910 10 , , , 36297 2910 11 Raumaesthetik Raumaesthetik NNP 36297 2910 12 and and CC 36297 2910 13 Zeit Zeit NNP 36297 2910 14 . . . 36297 2911 1 f. f. NNP 36297 2911 2 Psych Psych NNP 36297 2911 3 . . . 36297 2912 1 1896 1896 CD 36297 2912 2 , , , 36297 2912 3 12 12 CD 36297 2912 4 , , , 36297 2912 5 39 39 CD 36297 2912 6 . . . 36297 2913 1 INDEX index NN 36297 2913 2 Aberration aberration NN 36297 2913 3 , , , 36297 2913 4 19 19 CD 36297 2913 5 spherical spherical JJ 36297 2913 6 , , , 36297 2913 7 122 122 CD 36297 2913 8 chromatic chromatic JJ 36297 2913 9 , , , 36297 2913 10 135 135 CD 36297 2913 11 Aerial aerial JJ 36297 2913 12 perspective perspective NN 36297 2913 13 , , , 36297 2913 14 165 165 CD 36297 2913 15 , , , 36297 2913 16 183 183 CD 36297 2913 17 After after NN 36297 2913 18 - - HYPH 36297 2913 19 images image NNS 36297 2913 20 , , , 36297 2913 21 24 24 CD 36297 2913 22 , , , 36297 2913 23 25 25 CD 36297 2913 24 , , , 36297 2913 25 59 59 CD 36297 2913 26 , , , 36297 2913 27 128 128 CD 36297 2913 28 , , , 36297 2913 29 186 186 CD 36297 2913 30 positive positive JJ 36297 2913 31 and and CC 36297 2913 32 negative negative JJ 36297 2913 33 , , , 36297 2913 34 129 129 CD 36297 2913 35 Airplanes airplane NNS 36297 2913 36 , , , 36297 2913 37 visibility visibility NN 36297 2913 38 of of IN 36297 2913 39 , , , 36297 2913 40 233 233 CD 36297 2913 41 camouflage camouflage NN 36297 2913 42 for for IN 36297 2913 43 different different JJ 36297 2913 44 types type NNS 36297 2913 45 , , , 36297 2913 46 234 234 CD 36297 2913 47 size size NN 36297 2913 48 of of IN 36297 2913 49 image image NN 36297 2913 50 at at IN 36297 2913 51 various various JJ 36297 2913 52 altitudes altitude NNS 36297 2913 53 , , , 36297 2913 54 238 238 CD 36297 2913 55 camouflage camouflage NN 36297 2913 56 for for IN 36297 2913 57 various various JJ 36297 2913 58 conditions condition NNS 36297 2913 59 , , , 36297 2913 60 240 240 CD 36297 2913 61 Alhazen Alhazen NNP 36297 2913 62 , , , 36297 2913 63 8 8 CD 36297 2913 64 Angles angle NNS 36297 2913 65 , , , 36297 2913 66 influence influence NN 36297 2913 67 of of IN 36297 2913 68 , , , 36297 2913 69 76 76 CD 36297 2913 70 various various JJ 36297 2913 71 effects effect NNS 36297 2913 72 of of IN 36297 2913 73 , , , 36297 2913 74 81 81 CD 36297 2913 75 contours contour NNS 36297 2913 76 and and CC 36297 2913 77 , , , 36297 2913 78 87 87 CD 36297 2913 79 apparent apparent JJ 36297 2913 80 effect effect NN 36297 2913 81 on on IN 36297 2913 82 length length NN 36297 2913 83 , , , 36297 2913 84 91 91 CD 36297 2913 85 theories theory NNS 36297 2913 86 , , , 36297 2913 87 98 98 CD 36297 2913 88 Animals animal NNS 36297 2913 89 , , , 36297 2913 90 protective protective JJ 36297 2913 91 coloration coloration NN 36297 2913 92 , , , 36297 2913 93 211 211 CD 36297 2913 94 Architecture Architecture NNP 36297 2913 95 , , , 36297 2913 96 195 195 CD 36297 2913 97 balance balance NN 36297 2913 98 in in IN 36297 2913 99 , , , 36297 2913 100 201 201 CD 36297 2913 101 Arcs Arcs NNPS 36297 2913 102 , , , 36297 2913 103 circular circular JJ 36297 2913 104 , , , 36297 2913 105 illusions illusion NNS 36297 2913 106 due due JJ 36297 2913 107 to to IN 36297 2913 108 , , , 36297 2913 109 86 86 CD 36297 2913 110 Areas area NNS 36297 2913 111 , , , 36297 2913 112 juxtaposed juxtaposed NNP 36297 2913 113 , , , 36297 2913 114 illusions illusion NNS 36297 2913 115 of of IN 36297 2913 116 , , , 36297 2913 117 96 96 CD 36297 2913 118 Artist artist NN 36297 2913 119 , , , 36297 2913 120 179 179 CD 36297 2913 121 Attention attention NN 36297 2913 122 , , , 36297 2913 123 fluctuation fluctuation NN 36297 2913 124 of of IN 36297 2913 125 , , , 36297 2913 126 65 65 CD 36297 2913 127 , , , 36297 2913 128 106 106 CD 36297 2913 129 , , , 36297 2913 130 141 141 CD 36297 2913 131 , , , 36297 2913 132 164 164 CD 36297 2913 133 Aubert Aubert NNP 36297 2913 134 , , , 36297 2913 135 49 49 CD 36297 2913 136 Auerbach Auerbach NNP 36297 2913 137 's 's POS 36297 2913 138 indirect indirect JJ 36297 2913 139 vision vision NN 36297 2913 140 theory theory NN 36297 2913 141 , , , 36297 2913 142 100 100 CD 36297 2913 143 Aureole Aureole NNP 36297 2913 144 , , , 36297 2913 145 178 178 CD 36297 2913 146 Balance balance NN 36297 2913 147 in in IN 36297 2913 148 architecture architecture NN 36297 2913 149 , , , 36297 2913 150 201 201 CD 36297 2913 151 Bas Bas NNP 36297 2913 152 - - HYPH 36297 2913 153 relief relief NN 36297 2913 154 , , , 36297 2913 155 143 143 CD 36297 2913 156 Battleships battleship NNS 36297 2913 157 , , , 36297 2913 158 222 222 CD 36297 2913 159 Binocular binocular JJ 36297 2913 160 disparity disparity NN 36297 2913 161 , , , 36297 2913 162 105 105 CD 36297 2913 163 Binocular Binocular NNP 36297 2913 164 vision vision NN 36297 2913 165 , , , 36297 2913 166 29 29 CD 36297 2913 167 , , , 36297 2913 168 31 31 CD 36297 2913 169 Blending blending NN 36297 2913 170 of of IN 36297 2913 171 colors color NNS 36297 2913 172 in in IN 36297 2913 173 camouflage camouflage NN 36297 2913 174 , , , 36297 2913 175 216 216 CD 36297 2913 176 Blind blind JJ 36297 2913 177 spot spot NN 36297 2913 178 , , , 36297 2913 179 21 21 CD 36297 2913 180 Blue blue JJ 36297 2913 181 light light NN 36297 2913 182 on on IN 36297 2913 183 war war NN 36297 2913 184 - - HYPH 36297 2913 185 vessels vessel NNS 36297 2913 186 , , , 36297 2913 187 230 230 CD 36297 2913 188 Boswell Boswell NNP 36297 2913 189 , , , 36297 2913 190 varieties variety NNS 36297 2913 191 of of IN 36297 2913 192 irradiation irradiation NN 36297 2913 193 , , , 36297 2913 194 122 122 CD 36297 2913 195 Brightness Brightness NNP 36297 2913 196 , , , 36297 2913 197 illusions illusion NNS 36297 2913 198 due due JJ 36297 2913 199 to to IN 36297 2913 200 variations variation NNS 36297 2913 201 in in IN 36297 2913 202 , , , 36297 2913 203 107 107 CD 36297 2913 204 and and CC 36297 2913 205 color color NN 36297 2913 206 contrasts contrast NNS 36297 2913 207 , , , 36297 2913 208 114 114 CD 36297 2913 209 apparatus apparatus NN 36297 2913 210 , , , 36297 2913 211 115 115 CD 36297 2913 212 and and CC 36297 2913 213 hue hue NNP 36297 2913 214 , , , 36297 2913 215 125 125 CD 36297 2913 216 sky sky NN 36297 2913 217 , , , 36297 2913 218 241 241 CD 36297 2913 219 Brucke Brucke NNP 36297 2913 220 's 's POS 36297 2913 221 theory theory NN 36297 2913 222 , , , 36297 2913 223 37 37 CD 36297 2913 224 Brunot Brunot NNP 36297 2913 225 's 's POS 36297 2913 226 mean mean JJ 36297 2913 227 distance distance NN 36297 2913 228 theory theory NN 36297 2913 229 , , , 36297 2913 230 101 101 CD 36297 2913 231 Camouflage Camouflage NNP 36297 2913 232 , , , 36297 2913 233 210 210 CD 36297 2913 234 terrestrial terrestrial JJ 36297 2913 235 , , , 36297 2913 236 210 210 CD 36297 2913 237 detection detection NN 36297 2913 238 of of IN 36297 2913 239 , , , 36297 2913 240 215 215 CD 36297 2913 241 marine marine NN 36297 2913 242 , , , 36297 2913 243 222 222 CD 36297 2913 244 airplane airplane NN 36297 2913 245 , , , 36297 2913 246 234 234 CD 36297 2913 247 Carr Carr NNP 36297 2913 248 , , , 36297 2913 249 observations observation NNS 36297 2913 250 on on IN 36297 2913 251 distance distance NN 36297 2913 252 illusions illusion NNS 36297 2913 253 , , , 36297 2913 254 108 108 CD 36297 2913 255 Chromatic chromatic JJ 36297 2913 256 aberration aberration NN 36297 2913 257 , , , 36297 2913 258 19 19 CD 36297 2913 259 , , , 36297 2913 260 135 135 CD 36297 2913 261 Chlorophyl Chlorophyl NNP 36297 2913 262 , , , 36297 2913 263 214 214 CD 36297 2913 264 Circle Circle NNP 36297 2913 265 , , , 36297 2913 266 11 11 CD 36297 2913 267 arcs arc NNS 36297 2913 268 of of IN 36297 2913 269 , , , 36297 2913 270 illusion illusion NN 36297 2913 271 , , , 36297 2913 272 86 86 CD 36297 2913 273 contracting contracting NN 36297 2913 274 and and CC 36297 2913 275 expanding expand VBG 36297 2913 276 illusion illusion NN 36297 2913 277 , , , 36297 2913 278 98 98 CD 36297 2913 279 Clouds Clouds NNPS 36297 2913 280 , , , 36297 2913 281 235 235 CD 36297 2913 282 Color color NN 36297 2913 283 , , , 36297 2913 284 124 124 CD 36297 2913 285 after after IN 36297 2913 286 - - HYPH 36297 2913 287 images image NNS 36297 2913 288 , , , 36297 2913 289 128 128 CD 36297 2913 290 blending blending NN 36297 2913 291 in in IN 36297 2913 292 camouflage camouflage NN 36297 2913 293 , , , 36297 2913 294 216 216 CD 36297 2913 295 contrasts contrast NNS 36297 2913 296 and and CC 36297 2913 297 brightness brightness NN 36297 2913 298 , , , 36297 2913 299 114 114 CD 36297 2913 300 growth growth NN 36297 2913 301 and and CC 36297 2913 302 decay decay NN 36297 2913 303 of of IN 36297 2913 304 sensation sensation NN 36297 2913 305 , , , 36297 2913 306 131 131 CD 36297 2913 307 illusions illusion NNS 36297 2913 308 of of IN 36297 2913 309 , , , 36297 2913 310 156 156 CD 36297 2913 311 retiring retire VBG 36297 2913 312 and and CC 36297 2913 313 advancing advance VBG 36297 2913 314 , , , 36297 2913 315 138 138 CD 36297 2913 316 saturation saturation NN 36297 2913 317 , , , 36297 2913 318 154 154 CD 36297 2913 319 sensibility sensibility NN 36297 2913 320 of of IN 36297 2913 321 retina retina NNP 36297 2913 322 , , , 36297 2913 323 138 138 CD 36297 2913 324 warm warm JJ 36297 2913 325 and and CC 36297 2913 326 cold cold JJ 36297 2913 327 , , , 36297 2913 328 158 158 CD 36297 2913 329 Confusability confusability NN 36297 2913 330 , , , 36297 2913 331 226 226 CD 36297 2913 332 Confusion confusion NN 36297 2913 333 theory theory NN 36297 2913 334 of of IN 36297 2913 335 angular angular JJ 36297 2913 336 illusions illusion NNS 36297 2913 337 , , , 36297 2913 338 100 100 CD 36297 2913 339 Contour Contour NNP 36297 2913 340 , , , 36297 2913 341 illusions illusion NNS 36297 2913 342 of of IN 36297 2913 343 , , , 36297 2913 344 52 52 CD 36297 2913 345 and and CC 36297 2913 346 angles angle NNS 36297 2913 347 , , , 36297 2913 348 illusions illusion NNS 36297 2913 349 , , , 36297 2913 350 87 87 CD 36297 2913 351 Contracting contracting NN 36297 2913 352 and and CC 36297 2913 353 expanding expand VBG 36297 2913 354 circles circle NNS 36297 2913 355 , , , 36297 2913 356 illusion illusion NN 36297 2913 357 of of IN 36297 2913 358 , , , 36297 2913 359 98 98 CD 36297 2913 360 Contrasts Contrasts NNPS 36297 2913 361 , , , 36297 2913 362 illusions illusion NNS 36297 2913 363 of of IN 36297 2913 364 , , , 36297 2913 365 53 53 CD 36297 2913 366 simultaneous simultaneous JJ 36297 2913 367 , , , 36297 2913 368 124 124 CD 36297 2913 369 , , , 36297 2913 370 154 154 CD 36297 2913 371 apparatus apparatus NN 36297 2913 372 for for IN 36297 2913 373 , , , 36297 2913 374 115 115 CD 36297 2913 375 , , , 36297 2913 376 125 125 CD 36297 2913 377 color color NN 36297 2913 378 , , , 36297 2913 379 114 114 CD 36297 2913 380 , , , 36297 2913 381 154 154 CD 36297 2913 382 , , , 36297 2913 383 188 188 CD 36297 2913 384 brightness brightness NN 36297 2913 385 , , , 36297 2913 386 114 114 CD 36297 2913 387 Convergence Convergence NNP 36297 2913 388 , , , 36297 2913 389 illusions illusion NNS 36297 2913 390 of of IN 36297 2913 391 , , , 36297 2913 392 108 108 CD 36297 2913 393 , , , 36297 2913 394 191 191 CD 36297 2913 395 Cord Cord NNP 36297 2913 396 , , , 36297 2913 397 twisted twisted JJ 36297 2913 398 , , , 36297 2913 399 illusion illusion NN 36297 2913 400 , , , 36297 2913 401 88 88 CD 36297 2913 402 Daylight Daylight NNP 36297 2913 403 , , , 36297 2913 404 artificial artificial JJ 36297 2913 405 , , , 36297 2913 406 189 189 CD 36297 2913 407 Decoration Decoration NNP 36297 2913 408 , , , 36297 2913 409 painting painting NN 36297 2913 410 and and CC 36297 2913 411 , , , 36297 2913 412 179 179 CD 36297 2913 413 Decorator decorator NN 36297 2913 414 , , , 36297 2913 415 188 188 CD 36297 2913 416 Dember Dember NNP 36297 2913 417 , , , 36297 2913 418 167 167 CD 36297 2913 419 Depth depth NN 36297 2913 420 and and CC 36297 2913 421 distance distance NN 36297 2913 422 , , , 36297 2913 423 illusions illusion NNS 36297 2913 424 , , , 36297 2913 425 102 102 CD 36297 2913 426 Direction direction NN 36297 2913 427 , , , 36297 2913 428 illusions illusion NNS 36297 2913 429 of of IN 36297 2913 430 Zöllner Zöllner NNP 36297 2913 431 's 's POS 36297 2913 432 , , , 36297 2913 433 76 76 CD 36297 2913 434 Wundt Wundt NNP 36297 2913 435 's 's POS 36297 2913 436 , , , 36297 2913 437 79 79 CD 36297 2913 438 Hering Hering NNP 36297 2913 439 's 's POS 36297 2913 440 , , , 36297 2913 441 80 80 CD 36297 2913 442 Disk Disk NNP 36297 2913 443 , , , 36297 2913 444 Mason Mason NNP 36297 2913 445 , , , 36297 2913 446 132 132 CD 36297 2913 447 Distance Distance NNP 36297 2913 448 and and CC 36297 2913 449 depth depth NN 36297 2913 450 , , , 36297 2913 451 illusions illusion NNS 36297 2913 452 , , , 36297 2913 453 102 102 CD 36297 2913 454 and and CC 36297 2913 455 size size NN 36297 2913 456 , , , 36297 2913 457 35 35 CD 36297 2913 458 , , , 36297 2913 459 104 104 CD 36297 2913 460 , , , 36297 2913 461 166 166 CD 36297 2913 462 Distance Distance NNP 36297 2913 463 illusions illusion NNS 36297 2913 464 , , , 36297 2913 465 Carr Carr NNP 36297 2913 466 's 's POS 36297 2913 467 observations observation NNS 36297 2913 468 , , , 36297 2913 469 108 108 CD 36297 2913 470 Double double JJ 36297 2913 471 images image NNS 36297 2913 472 , , , 36297 2913 473 37 37 CD 36297 2913 474 Dynamic dynamic JJ 36297 2913 475 theory theory NN 36297 2913 476 of of IN 36297 2913 477 angular angular JJ 36297 2913 478 illusions illusion NNS 36297 2913 479 , , , 36297 2913 480 99 99 CD 36297 2913 481 Enlargement enlargement NN 36297 2913 482 of of IN 36297 2913 483 sun sun NN 36297 2913 484 and and CC 36297 2913 485 moon moon NN 36297 2913 486 at at IN 36297 2913 487 horizon horizon NN 36297 2913 488 , , , 36297 2913 489 apparent apparent JJ 36297 2913 490 , , , 36297 2913 491 169 169 CD 36297 2913 492 Equivocal equivocal JJ 36297 2913 493 figures figure NNS 36297 2913 494 , , , 36297 2913 495 64 64 CD 36297 2913 496 Euclid Euclid NNP 36297 2913 497 , , , 36297 2913 498 8 8 CD 36297 2913 499 Extent extent NN 36297 2913 500 , , , 36297 2913 501 interrupted interrupt VBN 36297 2913 502 , , , 36297 2913 503 illusions illusion NNS 36297 2913 504 of of IN 36297 2913 505 , , , 36297 2913 506 48 48 CD 36297 2913 507 External external JJ 36297 2913 508 image image NN 36297 2913 509 , , , 36297 2913 510 15 15 CD 36297 2913 511 , , , 36297 2913 512 17 17 CD 36297 2913 513 , , , 36297 2913 514 34 34 CD 36297 2913 515 Eye eye NN 36297 2913 516 , , , 36297 2913 517 physiology physiology NN 36297 2913 518 , , , 36297 2913 519 13 13 CD 36297 2913 520 position position NN 36297 2913 521 , , , 36297 2913 522 30 30 CD 36297 2913 523 adjustments adjustment NNS 36297 2913 524 , , , 36297 2913 525 33 33 CD 36297 2913 526 defects defect NNS 36297 2913 527 , , , 36297 2913 528 19 19 CD 36297 2913 529 Fatigue Fatigue NNP 36297 2913 530 , , , 36297 2913 531 128 128 CD 36297 2913 532 Field field NN 36297 2913 533 , , , 36297 2913 534 visual visual JJ 36297 2913 535 , , , 36297 2913 536 effect effect NN 36297 2913 537 of of IN 36297 2913 538 location location NN 36297 2913 539 in in IN 36297 2913 540 , , , 36297 2913 541 44 44 CD 36297 2913 542 Figures figure NNS 36297 2913 543 , , , 36297 2913 544 equivocal equivocal NN 36297 2913 545 , , , 36297 2913 546 64 64 CD 36297 2913 547 Filters filter NNS 36297 2913 548 , , , 36297 2913 549 color color NN 36297 2913 550 , , , 36297 2913 551 214 214 CD 36297 2913 552 Fluctuation fluctuation NN 36297 2913 553 of of IN 36297 2913 554 attention attention NN 36297 2913 555 , , , 36297 2913 556 65 65 CD 36297 2913 557 , , , 36297 2913 558 106 106 CD 36297 2913 559 , , , 36297 2913 560 141 141 CD 36297 2913 561 , , , 36297 2913 562 164 164 CD 36297 2913 563 Focusing focus VBG 36297 2913 564 , , , 36297 2913 565 14 14 CD 36297 2913 566 Form form NN 36297 2913 567 of of IN 36297 2913 568 sky sky NN 36297 2913 569 , , , 36297 2913 570 apparent apparent JJ 36297 2913 571 , , , 36297 2913 572 166 166 CD 36297 2913 573 Fovea Fovea NNP 36297 2913 574 centralis centralis NN 36297 2913 575 , , , 36297 2913 576 22 22 CD 36297 2913 577 , , , 36297 2913 578 23 23 CD 36297 2913 579 , , , 36297 2913 580 139 139 CD 36297 2913 581 Frames Frames NNPS 36297 2913 582 , , , 36297 2913 583 picture picture NN 36297 2913 584 , , , 36297 2913 585 effect effect NN 36297 2913 586 of of IN 36297 2913 587 wood wood NN 36297 2913 588 grain grain NN 36297 2913 589 , , , 36297 2913 590 190 190 CD 36297 2913 591 Geometrical geometrical JJ 36297 2913 592 illusions illusion NNS 36297 2913 593 , , , 36297 2913 594 44 44 CD 36297 2913 595 Glare glare CD 36297 2913 596 , , , 36297 2913 597 119 119 CD 36297 2913 598 Grain grain NN 36297 2913 599 of of IN 36297 2913 600 wood wood NN 36297 2913 601 , , , 36297 2913 602 apparent apparent JJ 36297 2913 603 distortions distortion NNS 36297 2913 604 due due JJ 36297 2913 605 to to IN 36297 2913 606 , , , 36297 2913 607 190 190 CD 36297 2913 608 Grecian grecian JJ 36297 2913 609 art art NN 36297 2913 610 , , , 36297 2913 611 196 196 CD 36297 2913 612 Growth growth NN 36297 2913 613 and and CC 36297 2913 614 decay decay NN 36297 2913 615 of of IN 36297 2913 616 color color NN 36297 2913 617 sensation sensation NN 36297 2913 618 , , , 36297 2913 619 131 131 CD 36297 2913 620 Guttman Guttman NNP 36297 2913 621 , , , 36297 2913 622 175 175 CD 36297 2913 623 Hallucination Hallucination NNP 36297 2913 624 , , , 36297 2913 625 4 4 CD 36297 2913 626 , , , 36297 2913 627 72 72 CD 36297 2913 628 Halo Halo NNS 36297 2913 629 , , , 36297 2913 630 178 178 CD 36297 2913 631 Haze haze NN 36297 2913 632 , , , 36297 2913 633 illusions illusion NNS 36297 2913 634 , , , 36297 2913 635 etc etc FW 36297 2913 636 . . . 36297 2913 637 , , , 36297 2913 638 103 103 CD 36297 2913 639 , , , 36297 2913 640 166 166 CD 36297 2913 641 , , , 36297 2913 642 183 183 CD 36297 2913 643 earth earth NN 36297 2913 644 and and CC 36297 2913 645 high high JJ 36297 2913 646 , , , 36297 2913 647 240 240 CD 36297 2913 648 Helmholtz Helmholtz NNP 36297 2913 649 , , , 36297 2913 650 13 13 CD 36297 2913 651 , , , 36297 2913 652 74 74 CD 36297 2913 653 Hering hering NN 36297 2913 654 , , , 36297 2913 655 74 74 CD 36297 2913 656 illusion illusion NN 36297 2913 657 of of IN 36297 2913 658 direction direction NN 36297 2913 659 , , , 36297 2913 660 80 80 CD 36297 2913 661 Hue hue NN 36297 2913 662 and and CC 36297 2913 663 brightness brightness NN 36297 2913 664 , , , 36297 2913 665 125 125 CD 36297 2913 666 Illusions Illusions NNPS 36297 2913 667 , , , 36297 2913 668 geometrical geometrical JJ 36297 2913 669 , , , 36297 2913 670 44 44 CD 36297 2913 671 equivocal equivocal JJ 36297 2913 672 figures figure NNS 36297 2913 673 , , , 36297 2913 674 64 64 CD 36297 2913 675 influence influence NN 36297 2913 676 of of IN 36297 2913 677 angles angle NNS 36297 2913 678 , , , 36297 2913 679 76 76 CD 36297 2913 680 of of IN 36297 2913 681 depth depth NN 36297 2913 682 and and CC 36297 2913 683 distance distance NN 36297 2913 684 , , , 36297 2913 685 102 102 CD 36297 2913 686 irradiation irradiation NN 36297 2913 687 and and CC 36297 2913 688 brightness brightness NN 36297 2913 689 contrast contrast NN 36297 2913 690 , , , 36297 2913 691 114 114 CD 36297 2913 692 color color NN 36297 2913 693 , , , 36297 2913 694 124 124 CD 36297 2913 695 light light JJ 36297 2913 696 and and CC 36297 2913 697 shadows shadow NNS 36297 2913 698 , , , 36297 2913 699 144 144 CD 36297 2913 700 in in IN 36297 2913 701 nature nature NN 36297 2913 702 , , , 36297 2913 703 164 164 CD 36297 2913 704 in in IN 36297 2913 705 painting painting NN 36297 2913 706 and and CC 36297 2913 707 decoration decoration NN 36297 2913 708 , , , 36297 2913 709 179 179 CD 36297 2913 710 mirror mirror NN 36297 2913 711 , , , 36297 2913 712 205 205 CD 36297 2913 713 camouflage camouflage NN 36297 2913 714 , , , 36297 2913 715 210 210 CD 36297 2913 716 Image image NN 36297 2913 717 after- after- NN 36297 2913 718 , , , 36297 2913 719 24 24 CD 36297 2913 720 , , , 36297 2913 721 25 25 CD 36297 2913 722 , , , 36297 2913 723 59 59 CD 36297 2913 724 , , , 36297 2913 725 128 128 CD 36297 2913 726 , , , 36297 2913 727 129 129 CD 36297 2913 728 , , , 36297 2913 729 186 186 CD 36297 2913 730 double double JJ 36297 2913 731 , , , 36297 2913 732 37 37 CD 36297 2913 733 external external JJ 36297 2913 734 , , , 36297 2913 735 15 15 CD 36297 2913 736 , , , 36297 2913 737 17 17 CD 36297 2913 738 , , , 36297 2913 739 34 34 CD 36297 2913 740 retinal retinal JJ 36297 2913 741 , , , 36297 2913 742 inversion inversion NN 36297 2913 743 of of IN 36297 2913 744 , , , 36297 2913 745 16 16 CD 36297 2913 746 of of IN 36297 2913 747 airplane airplane NN 36297 2913 748 , , , 36297 2913 749 size size NN 36297 2913 750 at at IN 36297 2913 751 various various JJ 36297 2913 752 altitudes altitude NNS 36297 2913 753 , , , 36297 2913 754 238 238 CD 36297 2913 755 Indirect indirect JJ 36297 2913 756 vision vision NN 36297 2913 757 theory theory NN 36297 2913 758 , , , 36297 2913 759 Auerbach Auerbach NNP 36297 2913 760 's 's POS 36297 2913 761 , , , 36297 2913 762 100 100 CD 36297 2913 763 Intaglio Intaglio NNP 36297 2913 764 , , , 36297 2913 765 143 143 CD 36297 2913 766 Interrupted Interrupted NNP 36297 2913 767 extent extent NN 36297 2913 768 , , , 36297 2913 769 illusions illusion NNS 36297 2913 770 of of IN 36297 2913 771 , , , 36297 2913 772 48 48 CD 36297 2913 773 Iris Iris NNPS 36297 2913 774 , , , 36297 2913 775 15 15 CD 36297 2913 776 Irradiation irradiation NN 36297 2913 777 , , , 36297 2913 778 120 120 CD 36297 2913 779 and and CC 36297 2913 780 brightness brightness NN 36297 2913 781 contrast contrast NN 36297 2913 782 , , , 36297 2913 783 114 114 CD 36297 2913 784 varieties variety NNS 36297 2913 785 of of IN 36297 2913 786 ( ( -LRB- 36297 2913 787 Boswell Boswell NNP 36297 2913 788 ) ) -RRB- 36297 2913 789 , , , 36297 2913 790 122 122 CD 36297 2913 791 in in IN 36297 2913 792 architecture architecture NN 36297 2913 793 , , , 36297 2913 794 199 199 CD 36297 2913 795 James James NNP 36297 2913 796 , , , 36297 2913 797 170 170 CD 36297 2913 798 Jastrow Jastrow NNP 36297 2913 799 , , , 36297 2913 800 80 80 CD 36297 2913 801 Jones Jones NNP 36297 2913 802 , , , 36297 2913 803 L. L. NNP 36297 2913 804 A. A. NNP 36297 2913 805 , , , 36297 2913 806 223 223 CD 36297 2913 807 Judd Judd NNP 36297 2913 808 , , , 36297 2913 809 86 86 CD 36297 2913 810 , , , 36297 2913 811 93 93 CD 36297 2913 812 Judgment Judgment NNP 36297 2913 813 , , , 36297 2913 814 1 1 CD 36297 2913 815 Karrer Karrer NNP 36297 2913 816 , , , 36297 2913 817 160 160 CD 36297 2913 818 Kepler Kepler NNP 36297 2913 819 , , , 36297 2913 820 8 8 CD 36297 2913 821 Light light NN 36297 2913 822 , , , 36297 2913 823 effect effect NN 36297 2913 824 of of IN 36297 2913 825 spectral spectral JJ 36297 2913 826 character character NN 36297 2913 827 , , , 36297 2913 828 189 189 CD 36297 2913 829 Lighting Lighting NNP 36297 2913 830 , , , 36297 2913 831 illusions illusion NNS 36297 2913 832 of of IN 36297 2913 833 depth depth NN 36297 2913 834 and and CC 36297 2913 835 distance distance NN 36297 2913 836 due due JJ 36297 2913 837 to to IN 36297 2913 838 , , , 36297 2913 839 102 102 CD 36297 2913 840 contrasts contrast NNS 36297 2913 841 , , , 36297 2913 842 154 154 CD 36297 2913 843 diffusion diffusion NN 36297 2913 844 , , , 36297 2913 845 effect effect NN 36297 2913 846 of of IN 36297 2913 847 , , , 36297 2913 848 145 145 CD 36297 2913 849 direction direction NN 36297 2913 850 , , , 36297 2913 851 effect effect NN 36297 2913 852 of of IN 36297 2913 853 , , , 36297 2913 854 144 144 CD 36297 2913 855 , , , 36297 2913 856 151 151 CD 36297 2913 857 ending ending NN 36297 2913 858 of of IN 36297 2913 859 searchlight searchlight NN 36297 2913 860 beam beam NN 36297 2913 861 , , , 36297 2913 862 160 160 CD 36297 2913 863 warm warm JJ 36297 2913 864 and and CC 36297 2913 865 cold cold JJ 36297 2913 866 colors color NNS 36297 2913 867 , , , 36297 2913 868 158 158 CD 36297 2913 869 Lipps Lipps NNP 36297 2913 870 , , , 36297 2913 871 10 10 CD 36297 2913 872 , , , 36297 2913 873 11 11 CD 36297 2913 874 dynamic dynamic JJ 36297 2913 875 theory theory NN 36297 2913 876 of of IN 36297 2913 877 , , , 36297 2913 878 99 99 CD 36297 2913 879 Location location NN 36297 2913 880 in in IN 36297 2913 881 visual visual JJ 36297 2913 882 field field NN 36297 2913 883 , , , 36297 2913 884 effect effect NN 36297 2913 885 , , , 36297 2913 886 44 44 CD 36297 2913 887 Mean mean JJ 36297 2913 888 distance distance NN 36297 2913 889 theory theory NN 36297 2913 890 , , , 36297 2913 891 Brunot Brunot NNP 36297 2913 892 's 's POS 36297 2913 893 , , , 36297 2913 894 101 101 CD 36297 2913 895 Mechanical mechanical JJ 36297 2913 896 , , , 36297 2913 897 esthetic esthetic JJ 36297 2913 898 unity unity NN 36297 2913 899 , , , 36297 2913 900 11 11 CD 36297 2913 901 Magician Magician NNP 36297 2913 902 , , , 36297 2913 903 3 3 CD 36297 2913 904 Magic Magic NNP 36297 2913 905 , , , 36297 2913 906 mirror mirror NN 36297 2913 907 , , , 36297 2913 908 205 205 CD 36297 2913 909 Marine marine JJ 36297 2913 910 camouflage camouflage NN 36297 2913 911 , , , 36297 2913 912 222 222 CD 36297 2913 913 Mason Mason NNP 36297 2913 914 disk disk NN 36297 2913 915 , , , 36297 2913 916 132 132 CD 36297 2913 917 Mirage Mirage NNP 36297 2913 918 , , , 36297 2913 919 3 3 CD 36297 2913 920 , , , 36297 2913 921 176 176 CD 36297 2913 922 Mirror Mirror NNP 36297 2913 923 magic magic NN 36297 2913 924 , , , 36297 2913 925 205 205 CD 36297 2913 926 Miscellaneous miscellaneous JJ 36297 2913 927 color color NN 36297 2913 928 effects effect NNS 36297 2913 929 , , , 36297 2913 930 140 140 CD 36297 2913 931 Moon Moon NNP 36297 2913 932 , , , 36297 2913 933 apparent apparent JJ 36297 2913 934 size size NN 36297 2913 935 at at IN 36297 2913 936 horizon horizon NN 36297 2913 937 , , , 36297 2913 938 8 8 CD 36297 2913 939 , , , 36297 2913 940 36 36 CD 36297 2913 941 , , , 36297 2913 942 169 169 CD 36297 2913 943 theories theory NNS 36297 2913 944 of of IN 36297 2913 945 , , , 36297 2913 946 173 173 CD 36297 2913 947 apparent apparent JJ 36297 2913 948 radius radius NN 36297 2913 949 of of IN 36297 2913 950 crescent crescent NNP 36297 2913 951 , , , 36297 2913 952 121 121 CD 36297 2913 953 Müller Müller NNP 36297 2913 954 - - HYPH 36297 2913 955 Lyer Lyer NNP 36297 2913 956 illusion illusion NN 36297 2913 957 , , , 36297 2913 958 53 53 CD 36297 2913 959 , , , 36297 2913 960 93 93 CD 36297 2913 961 National National NNP 36297 2913 962 Research Research NNP 36297 2913 963 Council Council NNP 36297 2913 964 , , , 36297 2913 965 Committee Committee NNP 36297 2913 966 on on IN 36297 2913 967 Camouflage Camouflage NNP 36297 2913 968 , , , 36297 2913 969 234 234 CD 36297 2913 970 Nature nature NN 36297 2913 971 , , , 36297 2913 972 164 164 CD 36297 2913 973 Necker Necker NNP 36297 2913 974 , , , 36297 2913 975 74 74 CD 36297 2913 976 Oppel Oppel NNP 36297 2913 977 , , , 36297 2913 978 9 9 CD 36297 2913 979 Painting painting NN 36297 2913 980 and and CC 36297 2913 981 decoration decoration NN 36297 2913 982 , , , 36297 2913 983 179 179 CD 36297 2913 984 Painter Painter NNP 36297 2913 985 , , , 36297 2913 986 2 2 CD 36297 2913 987 , , , 36297 2913 988 179 179 CD 36297 2913 989 , , , 36297 2913 990 186 186 CD 36297 2913 991 Parallax parallax NN 36297 2913 992 , , , 36297 2913 993 105 105 CD 36297 2913 994 Parthenon Parthenon NNP 36297 2913 995 of of IN 36297 2913 996 Athens Athens NNP 36297 2913 997 , , , 36297 2913 998 196 196 CD 36297 2913 999 Persistence persistence NN 36297 2913 1000 of of IN 36297 2913 1001 vision vision NN 36297 2913 1002 , , , 36297 2913 1003 131 131 CD 36297 2913 1004 Perspective Perspective NNP 36297 2913 1005 , , , 36297 2913 1006 58 58 CD 36297 2913 1007 in in IN 36297 2913 1008 architecture architecture NN 36297 2913 1009 , , , 36297 2913 1010 198 198 CD 36297 2913 1011 aerial aerial JJ 36297 2913 1012 165 165 CD 36297 2913 1013 , , , 36297 2913 1014 183 183 CD 36297 2913 1015 theory theory NN 36297 2913 1016 , , , 36297 2913 1017 98 98 CD 36297 2913 1018 Photographer Photographer NNP 36297 2913 1019 , , , 36297 2913 1020 152 152 CD 36297 2913 1021 Photography Photography NNP 36297 2913 1022 , , , 36297 2913 1023 use use NN 36297 2913 1024 in in IN 36297 2913 1025 detection detection NN 36297 2913 1026 of of IN 36297 2913 1027 camouflage camouflage NN 36297 2913 1028 , , , 36297 2913 1029 220 220 CD 36297 2913 1030 Photometer Photometer NNP 36297 2913 1031 , , , 36297 2913 1032 156 156 CD 36297 2913 1033 , , , 36297 2913 1034 217 217 CD 36297 2913 1035 Pigments pigment NNS 36297 2913 1036 , , , 36297 2913 1037 184 184 CD 36297 2913 1038 Poggendorff Poggendorff NNP 36297 2913 1039 illusion illusion NN 36297 2913 1040 , , , 36297 2913 1041 85 85 CD 36297 2913 1042 Protective protective JJ 36297 2913 1043 coloration coloration NN 36297 2913 1044 , , , 36297 2913 1045 animals animal NNS 36297 2913 1046 , , , 36297 2913 1047 211 211 CD 36297 2913 1048 Psychology psychology NN 36297 2913 1049 , , , 36297 2913 1050 2 2 CD 36297 2913 1051 , , , 36297 2913 1052 6 6 CD 36297 2913 1053 , , , 36297 2913 1054 157 157 CD 36297 2913 1055 of of IN 36297 2913 1056 light light NN 36297 2913 1057 , , , 36297 2913 1058 193 193 CD 36297 2913 1059 Purkinje purkinje NN 36297 2913 1060 phenomenon phenomenon NN 36297 2913 1061 , , , 36297 2913 1062 26 26 CD 36297 2913 1063 , , , 36297 2913 1064 139 139 CD 36297 2913 1065 Reflection reflection NN 36297 2913 1066 - - HYPH 36297 2913 1067 factors factor NNS 36297 2913 1068 , , , 36297 2913 1069 236 236 CD 36297 2913 1070 Retina Retina NNP 36297 2913 1071 , , , 36297 2913 1072 14 14 CD 36297 2913 1073 , , , 36297 2913 1074 20 20 CD 36297 2913 1075 inertia inertia NN 36297 2913 1076 , , , 36297 2913 1077 130 130 CD 36297 2913 1078 color color NN 36297 2913 1079 sensibility sensibility NN 36297 2913 1080 , , , 36297 2913 1081 138 138 CD 36297 2913 1082 Retinal retinal JJ 36297 2913 1083 rivalry rivalry NN 36297 2913 1084 , , , 36297 2913 1085 140 140 CD 36297 2913 1086 Retiring retire VBG 36297 2913 1087 and and CC 36297 2913 1088 advancing advance VBG 36297 2913 1089 colors color NNS 36297 2913 1090 , , , 36297 2913 1091 136 136 CD 36297 2913 1092 Reversal reversal NN 36297 2913 1093 of of IN 36297 2913 1094 mirror mirror NN 36297 2913 1095 image image NN 36297 2913 1096 , , , 36297 2913 1097 205 205 CD 36297 2913 1098 Rods rod NNS 36297 2913 1099 and and CC 36297 2913 1100 cones cone NNS 36297 2913 1101 , , , 36297 2913 1102 21 21 CD 36297 2913 1103 Schröder Schröder NNP 36297 2913 1104 's 's POS 36297 2913 1105 staircase staircase NN 36297 2913 1106 , , , 36297 2913 1107 70 70 CD 36297 2913 1108 Sculpture sculpture NN 36297 2913 1109 , , , 36297 2913 1110 204 204 CD 36297 2913 1111 Searchlight Searchlight NNP 36297 2913 1112 beam beam NN 36297 2913 1113 , , , 36297 2913 1114 ending end VBG 36297 2913 1115 of of IN 36297 2913 1116 , , , 36297 2913 1117 160 160 CD 36297 2913 1118 Sensation Sensation NNP 36297 2913 1119 , , , 36297 2913 1120 color color NN 36297 2913 1121 , , , 36297 2913 1122 growth growth NN 36297 2913 1123 and and CC 36297 2913 1124 decay decay NN 36297 2913 1125 , , , 36297 2913 1126 131 131 CD 36297 2913 1127 Sense Sense NNP 36297 2913 1128 , , , 36297 2913 1129 1 1 CD 36297 2913 1130 Shading shade VBG 36297 2913 1131 , , , 36297 2913 1132 counter counter NN 36297 2913 1133 , , , 36297 2913 1134 for for IN 36297 2913 1135 vessels vessel NNS 36297 2913 1136 , , , 36297 2913 1137 224 224 CD 36297 2913 1138 Shadows shadow NNS 36297 2913 1139 , , , 36297 2913 1140 importance importance NN 36297 2913 1141 in in IN 36297 2913 1142 camouflage camouflage NN 36297 2913 1143 , , , 36297 2913 1144 215 215 CD 36297 2913 1145 Size size NN 36297 2913 1146 and and CC 36297 2913 1147 distance distance NN 36297 2913 1148 , , , 36297 2913 1149 35 35 CD 36297 2913 1150 , , , 36297 2913 1151 36 36 CD 36297 2913 1152 illusions illusion NNS 36297 2913 1153 of of IN 36297 2913 1154 , , , 36297 2913 1155 104 104 CD 36297 2913 1156 , , , 36297 2913 1157 166 166 CD 36297 2913 1158 Sky Sky NNP 36297 2913 1159 apparent apparent JJ 36297 2913 1160 form form NN 36297 2913 1161 of of IN 36297 2913 1162 , , , 36297 2913 1163 166 166 CD 36297 2913 1164 brightness brightness NN 36297 2913 1165 , , , 36297 2913 1166 241 241 CD 36297 2913 1167 Skylight skylight NN 36297 2913 1168 and and CC 36297 2913 1169 sunlight sunlight NN 36297 2913 1170 , , , 36297 2913 1171 relative relative JJ 36297 2913 1172 proportions proportion NNS 36297 2913 1173 of of IN 36297 2913 1174 , , , 36297 2913 1175 215 215 CD 36297 2913 1176 , , , 36297 2913 1177 243 243 CD 36297 2913 1178 Smith Smith NNP 36297 2913 1179 , , , 36297 2913 1180 Robert Robert NNP 36297 2913 1181 , , , 36297 2913 1182 173 173 CD 36297 2913 1183 Smoke smoke NN 36297 2913 1184 - - HYPH 36297 2913 1185 screens screen NNS 36297 2913 1186 , , , 36297 2913 1187 230 230 CD 36297 2913 1188 Spectral spectral JJ 36297 2913 1189 character character NN 36297 2913 1190 of of IN 36297 2913 1191 light light NN 36297 2913 1192 , , , 36297 2913 1193 189 189 CD 36297 2913 1194 Sphere Sphere NNP 36297 2913 1195 , , , 36297 2913 1196 illusions illusion NNS 36297 2913 1197 , , , 36297 2913 1198 145 145 CD 36297 2913 1199 , , , 36297 2913 1200 150 150 CD 36297 2913 1201 , , , 36297 2913 1202 151 151 CD 36297 2913 1203 Spherical spherical JJ 36297 2913 1204 aberration aberration NN 36297 2913 1205 , , , 36297 2913 1206 19 19 CD 36297 2913 1207 Sphinx sphinx JJ 36297 2913 1208 illusion illusion NN 36297 2913 1209 , , , 36297 2913 1210 206 206 CD 36297 2913 1211 Spiral spiral JJ 36297 2913 1212 illusions illusion NNS 36297 2913 1213 , , , 36297 2913 1214 90 90 CD 36297 2913 1215 Spraying spraying NN 36297 2913 1216 , , , 36297 2913 1217 paint paint NN 36297 2913 1218 , , , 36297 2913 1219 187 187 CD 36297 2913 1220 Stereoscope Stereoscope NNP 36297 2913 1221 , , , 36297 2913 1222 39 39 CD 36297 2913 1223 , , , 36297 2913 1224 142 142 CD 36297 2913 1225 Stereoscopic stereoscopic JJ 36297 2913 1226 vision vision NN 36297 2913 1227 , , , 36297 2913 1228 38 38 CD 36297 2913 1229 , , , 36297 2913 1230 41 41 CD 36297 2913 1231 , , , 36297 2913 1232 141 141 CD 36297 2913 1233 Submarines submarine NNS 36297 2913 1234 , , , 36297 2913 1235 225 225 CD 36297 2913 1236 camouflage camouflage NN 36297 2913 1237 for for IN 36297 2913 1238 , , , 36297 2913 1239 232 232 CD 36297 2913 1240 Sun Sun NNP 36297 2913 1241 , , , 36297 2913 1242 apparent apparent JJ 36297 2913 1243 enlargement enlargement NN 36297 2913 1244 at at IN 36297 2913 1245 horizon horizon NN 36297 2913 1246 , , , 36297 2913 1247 169 169 CD 36297 2913 1248 Sunlight sunlight NN 36297 2913 1249 and and CC 36297 2913 1250 skylight skylight NN 36297 2913 1251 , , , 36297 2913 1252 relative relative JJ 36297 2913 1253 proportions proportion NNS 36297 2913 1254 in in IN 36297 2913 1255 nature nature NN 36297 2913 1256 , , , 36297 2913 1257 215 215 CD 36297 2913 1258 , , , 36297 2913 1259 243 243 CD 36297 2913 1260 Terrestrial terrestrial JJ 36297 2913 1261 camouflage camouflage NN 36297 2913 1262 , , , 36297 2913 1263 210 210 CD 36297 2913 1264 Theory theory NN 36297 2913 1265 of of IN 36297 2913 1266 influence influence NN 36297 2913 1267 of of IN 36297 2913 1268 angles angle NNS 36297 2913 1269 , , , 36297 2913 1270 98 98 CD 36297 2913 1271 perspective perspective NN 36297 2913 1272 , , , 36297 2913 1273 98 98 CD 36297 2913 1274 dynamic dynamic JJ 36297 2913 1275 , , , 36297 2913 1276 99 99 CD 36297 2913 1277 confusion confusion NN 36297 2913 1278 , , , 36297 2913 1279 100 100 CD 36297 2913 1280 indirect indirect JJ 36297 2913 1281 vision vision NN 36297 2913 1282 , , , 36297 2913 1283 100 100 CD 36297 2913 1284 mean mean JJ 36297 2913 1285 distance distance NN 36297 2913 1286 , , , 36297 2913 1287 101 101 CD 36297 2913 1288 Thiéry Thiéry NNP 36297 2913 1289 's 's POS 36297 2913 1290 figure figure NN 36297 2913 1291 , , , 36297 2913 1292 71 71 CD 36297 2913 1293 Thiéry thiéry NN 36297 2913 1294 's 's POS 36297 2913 1295 perspective perspective NN 36297 2913 1296 theory theory NN 36297 2913 1297 , , , 36297 2913 1298 99 99 CD 36297 2913 1299 Transparencies transparency NNS 36297 2913 1300 , , , 36297 2913 1301 185 185 CD 36297 2913 1302 Twisted twisted JJ 36297 2913 1303 cord cord NN 36297 2913 1304 illusions illusion NNS 36297 2913 1305 , , , 36297 2913 1306 88 88 CD 36297 2913 1307 Uibe Uibe NNP 36297 2913 1308 , , , 36297 2913 1309 167 167 CD 36297 2913 1310 Vertical vertical JJ 36297 2913 1311 vs. vs. IN 36297 2913 1312 horizontal horizontal JJ 36297 2913 1313 distances distance NNS 36297 2913 1314 , , , 36297 2913 1315 11 11 CD 36297 2913 1316 , , , 36297 2913 1317 36 36 CD 36297 2913 1318 , , , 36297 2913 1319 46 46 CD 36297 2913 1320 Visibility visibility NN 36297 2913 1321 , , , 36297 2913 1322 low low JJ 36297 2913 1323 , , , 36297 2913 1324 for for IN 36297 2913 1325 vessels vessel NNS 36297 2913 1326 , , , 36297 2913 1327 222 222 CD 36297 2913 1328 of of IN 36297 2913 1329 airplanes airplane NNS 36297 2913 1330 , , , 36297 2913 1331 233 233 CD 36297 2913 1332 Vision Vision NNP 36297 2913 1333 , , , 36297 2913 1334 29 29 CD 36297 2913 1335 persistence persistence NN 36297 2913 1336 of of IN 36297 2913 1337 , , , 36297 2913 1338 131 131 CD 36297 2913 1339 stereoscopic stereoscopic NN 36297 2913 1340 , , , 36297 2913 1341 38 38 CD 36297 2913 1342 Visual visual JJ 36297 2913 1343 perception perception NN 36297 2913 1344 , , , 36297 2913 1345 32 32 CD 36297 2913 1346 , , , 36297 2913 1347 33 33 CD 36297 2913 1348 Warm warm JJ 36297 2913 1349 and and CC 36297 2913 1350 cold cold JJ 36297 2913 1351 colors color NNS 36297 2913 1352 , , , 36297 2913 1353 158 158 CD 36297 2913 1354 Warner Warner NNP 36297 2913 1355 , , , 36297 2913 1356 E. E. NNP 36297 2913 1357 L. L. NNP 36297 2913 1358 , , , 36297 2913 1359 227 227 CD 36297 2913 1360 Wheatstone Wheatstone NNP 36297 2913 1361 , , , 36297 2913 1362 37 37 CD 36297 2913 1363 Wood wood NN 36297 2913 1364 grain grain NN 36297 2913 1365 , , , 36297 2913 1366 illusions illusion NNS 36297 2913 1367 caused cause VBN 36297 2913 1368 by by IN 36297 2913 1369 , , , 36297 2913 1370 191 191 CD 36297 2913 1371 World World NNP 36297 2913 1372 War War NNP 36297 2913 1373 , , , 36297 2913 1374 213 213 CD 36297 2913 1375 Wundt Wundt NNP 36297 2913 1376 , , , 36297 2913 1377 10 10 CD 36297 2913 1378 , , , 36297 2913 1379 11 11 CD 36297 2913 1380 , , , 36297 2913 1381 32 32 CD 36297 2913 1382 , , , 36297 2913 1383 74 74 CD 36297 2913 1384 illusion illusion NN 36297 2913 1385 of of IN 36297 2913 1386 direction direction NN 36297 2913 1387 , , , 36297 2913 1388 79 79 CD 36297 2913 1389 Yellow yellow JJ 36297 2913 1390 spot spot NN 36297 2913 1391 , , , 36297 2913 1392 139 139 CD 36297 2913 1393 Zöllner Zöllner NNP 36297 2913 1394 's 's POS 36297 2913 1395 illusion illusion NN 36297 2913 1396 , , , 36297 2913 1397 67 67 CD 36297 2913 1398 , , , 36297 2913 1399 76 76 CD 36297 2913 1400 Zoth Zoth NNP 36297 2913 1401 , , , 36297 2913 1402 175 175 CD 36297 2913 1403 OTHER other JJ 36297 2913 1404 BOOKS BOOKS NNP 36297 2913 1405 BY by IN 36297 2913 1406 M. M. NNP 36297 2913 1407 LUCKIESH LUCKIESH NNP 36297 2913 1408 COLOR COLOR NNP 36297 2913 1409 AND and CC 36297 2913 1410 ITS its PRP$ 36297 2913 1411 APPLICATIONS applications JJ 36297 2913 1412 Second Second NNP 36297 2913 1413 Edition Edition NNP 36297 2913 1414 , , , 36297 2913 1415 Revised Revised NNP 36297 2913 1416 and and CC 36297 2913 1417 Enlarged Enlarged NNP 36297 2913 1418 . . . 36297 2914 1 6 6 CD 36297 2914 2 x x SYM 36297 2914 3 9 9 CD 36297 2914 4 , , , 36297 2914 5 150 150 CD 36297 2914 6 illustrations illustration NNS 36297 2914 7 , , , 36297 2914 8 4 4 CD 36297 2914 9 color color NN 36297 2914 10 plates plate NNS 36297 2914 11 , , , 36297 2914 12 431 431 CD 36297 2914 13 pages page NNS 36297 2914 14 . . . 36297 2915 1 $ $ $ 36297 2915 2 4.50 4.50 CD 36297 2915 3 The the DT 36297 2915 4 object object NN 36297 2915 5 of of IN 36297 2915 6 this this DT 36297 2915 7 treatise treatise NN 36297 2915 8 is be VBZ 36297 2915 9 not not RB 36297 2915 10 only only JJ 36297 2915 11 to to TO 36297 2915 12 discuss discuss VB 36297 2915 13 the the DT 36297 2915 14 many many JJ 36297 2915 15 applications application NNS 36297 2915 16 of of IN 36297 2915 17 color color NN 36297 2915 18 , , , 36297 2915 19 but but CC 36297 2915 20 to to TO 36297 2915 21 establish establish VB 36297 2915 22 a a DT 36297 2915 23 sound sound JJ 36297 2915 24 scientific scientific JJ 36297 2915 25 basis basis NN 36297 2915 26 for for IN 36297 2915 27 these these DT 36297 2915 28 applications application NNS 36297 2915 29 . . . 36297 2916 1 The the DT 36297 2916 2 book book NN 36297 2916 3 is be VBZ 36297 2916 4 authoritative authoritative JJ 36297 2916 5 , , , 36297 2916 6 well well RB 36297 2916 7 illustrated illustrated JJ 36297 2916 8 , , , 36297 2916 9 and and CC 36297 2916 10 contains contain VBZ 36297 2916 11 many many JJ 36297 2916 12 references reference NNS 36297 2916 13 and and CC 36297 2916 14 a a DT 36297 2916 15 wealth wealth NN 36297 2916 16 of of IN 36297 2916 17 new new JJ 36297 2916 18 material material NN 36297 2916 19 . . . 36297 2917 1 It -PRON- PRP 36297 2917 2 was be VBD 36297 2917 3 written write VBN 36297 2917 4 by by IN 36297 2917 5 an an DT 36297 2917 6 investigator investigator NN 36297 2917 7 in in IN 36297 2917 8 the the DT 36297 2917 9 general general JJ 36297 2917 10 field field NN 36297 2917 11 of of IN 36297 2917 12 color color NN 36297 2917 13 and and CC 36297 2917 14 is be VBZ 36297 2917 15 therefore therefore RB 36297 2917 16 not not RB 36297 2917 17 narrowly narrowly RB 36297 2917 18 limited limited JJ 36297 2917 19 in in IN 36297 2917 20 scope scope NN 36297 2917 21 . . . 36297 2918 1 It -PRON- PRP 36297 2918 2 fills fill VBZ 36297 2918 3 a a DT 36297 2918 4 distinct distinct JJ 36297 2918 5 gap gap NN 36297 2918 6 that that WDT 36297 2918 7 has have VBZ 36297 2918 8 existed exist VBN 36297 2918 9 on on IN 36297 2918 10 the the DT 36297 2918 11 book book NN 36297 2918 12 shelves shelf NNS 36297 2918 13 . . . 36297 2919 1 LIGHT light NN 36297 2919 2 AND and CC 36297 2919 3 SHADE shade NN 36297 2919 4 AND and CC 36297 2919 5 THEIR their NN 36297 2919 6 APPLICATIONS application NNS 36297 2919 7 6 6 CD 36297 2919 8 x x SYM 36297 2919 9 9 9 CD 36297 2919 10 , , , 36297 2919 11 135 135 CD 36297 2919 12 illustrations illustration NNS 36297 2919 13 , , , 36297 2919 14 277 277 CD 36297 2919 15 pages page NNS 36297 2919 16 $ $ $ 36297 2919 17 3.00 3.00 CD 36297 2919 18 The the DT 36297 2919 19 book book NN 36297 2919 20 is be VBZ 36297 2919 21 a a DT 36297 2919 22 condensed condense VBN 36297 2919 23 record record NN 36297 2919 24 of of IN 36297 2919 25 several several JJ 36297 2919 26 years year NNS 36297 2919 27 ' ' POS 36297 2919 28 research research NN 36297 2919 29 by by IN 36297 2919 30 the the DT 36297 2919 31 author author NN 36297 2919 32 in in IN 36297 2919 33 the the DT 36297 2919 34 science science NN 36297 2919 35 of of IN 36297 2919 36 light light NN 36297 2919 37 and and CC 36297 2919 38 shade shade NN 36297 2919 39 . . . 36297 2920 1 It -PRON- PRP 36297 2920 2 is be VBZ 36297 2920 3 the the DT 36297 2920 4 first first JJ 36297 2920 5 published publish VBN 36297 2920 6 work work NN 36297 2920 7 which which WDT 36297 2920 8 deals deal VBZ 36297 2920 9 with with IN 36297 2920 10 the the DT 36297 2920 11 science science NN 36297 2920 12 of of IN 36297 2920 13 light light NN 36297 2920 14 and and CC 36297 2920 15 shade shade NN 36297 2920 16 in in IN 36297 2920 17 a a DT 36297 2920 18 complete complete JJ 36297 2920 19 and and CC 36297 2920 20 analytical analytical JJ 36297 2920 21 manner manner NN 36297 2920 22 . . . 36297 2921 1 The the DT 36297 2921 2 author author NN 36297 2921 3 has have VBZ 36297 2921 4 the the DT 36297 2921 5 faculty faculty NN 36297 2921 6 of of IN 36297 2921 7 bringing bring VBG 36297 2921 8 forth forth RP 36297 2921 9 scientific scientific JJ 36297 2921 10 facts fact NNS 36297 2921 11 in in IN 36297 2921 12 such such PDT 36297 2921 13 a a DT 36297 2921 14 manner manner NN 36297 2921 15 as as IN 36297 2921 16 to to TO 36297 2921 17 be be VB 36297 2921 18 helpful helpful JJ 36297 2921 19 to to IN 36297 2921 20 those those DT 36297 2921 21 interested interested JJ 36297 2921 22 in in IN 36297 2921 23 the the DT 36297 2921 24 various various JJ 36297 2921 25 arts art NNS 36297 2921 26 . . . 36297 2922 1 The the DT 36297 2922 2 book book NN 36297 2922 3 is be VBZ 36297 2922 4 of of IN 36297 2922 5 extremely extremely RB 36297 2922 6 wide wide JJ 36297 2922 7 interest interest NN 36297 2922 8 because because IN 36297 2922 9 it -PRON- PRP 36297 2922 10 deals deal VBZ 36297 2922 11 with with IN 36297 2922 12 the the DT 36297 2922 13 appearances appearance NNS 36297 2922 14 of of IN 36297 2922 15 objects object NNS 36297 2922 16 and and CC 36297 2922 17 hence hence RB 36297 2922 18 with with IN 36297 2922 19 vision vision NN 36297 2922 20 and and CC 36297 2922 21 with with IN 36297 2922 22 lighting lighting NN 36297 2922 23 . . . 36297 2923 1 It -PRON- PRP 36297 2923 2 is be VBZ 36297 2923 3 well well RB 36297 2923 4 illustrated illustrate VBN 36297 2923 5 and and CC 36297 2923 6 represents represent VBZ 36297 2923 7 the the DT 36297 2923 8 first first JJ 36297 2923 9 elaborate elaborate JJ 36297 2923 10 attempt attempt NN 36297 2923 11 to to TO 36297 2923 12 formulate formulate VB 36297 2923 13 the the DT 36297 2923 14 science science NN 36297 2923 15 of of IN 36297 2923 16 light light NN 36297 2923 17 and and CC 36297 2923 18 shade shade NN 36297 2923 19 and and CC 36297 2923 20 to to TO 36297 2923 21 correlate correlate VB 36297 2923 22 it -PRON- PRP 36297 2923 23 with with IN 36297 2923 24 various various JJ 36297 2923 25 arts art NNS 36297 2923 26 . . . 36297 2924 1 ULTRAVIOLET ULTRAVIOLET NNP 36297 2924 2 RADIATION RADIATION NNP 36297 2924 3 , , , 36297 2924 4 Its -PRON- PRP$ 36297 2924 5 Properties Properties NNPS 36297 2924 6 , , , 36297 2924 7 Production Production NNP 36297 2924 8 , , , 36297 2924 9 Measurement Measurement NNP 36297 2924 10 and and CC 36297 2924 11 Applications Applications NNP 36297 2924 12 . . . 36297 2925 1 6 6 CD 36297 2925 2 x x SYM 36297 2925 3 9 9 CD 36297 2925 4 , , , 36297 2925 5 12 12 CD 36297 2925 6 plates plate NNS 36297 2925 7 , , , 36297 2925 8 270 270 CD 36297 2925 9 pages page NNS 36297 2925 10 $ $ $ 36297 2925 11 3.50 3.50 CD 36297 2925 12 It -PRON- PRP 36297 2925 13 is be VBZ 36297 2925 14 the the DT 36297 2925 15 primary primary JJ 36297 2925 16 aim aim NN 36297 2925 17 of of IN 36297 2925 18 this this DT 36297 2925 19 book book NN 36297 2925 20 to to TO 36297 2925 21 present present VB 36297 2925 22 authentic authentic JJ 36297 2925 23 data datum NNS 36297 2925 24 of of IN 36297 2925 25 such such JJ 36297 2925 26 scope scope NN 36297 2925 27 as as IN 36297 2925 28 to to TO 36297 2925 29 be be VB 36297 2925 30 useful useful JJ 36297 2925 31 to to IN 36297 2925 32 the the DT 36297 2925 33 chemist chemist NN 36297 2925 34 , , , 36297 2925 35 physicist physicist JJ 36297 2925 36 , , , 36297 2925 37 engineer engineer NN 36297 2925 38 , , , 36297 2925 39 biologist biologist UH 36297 2925 40 , , , 36297 2925 41 ophthalmologist ophthalmologist NN 36297 2925 42 and and CC 36297 2925 43 physician physician NN 36297 2925 44 and and CC 36297 2925 45 others other NNS 36297 2925 46 interested interested JJ 36297 2925 47 in in IN 36297 2925 48 ultraviolet ultraviolet JJ 36297 2925 49 radiation radiation NN 36297 2925 50 . . . 36297 2926 1 Theory theory NN 36297 2926 2 has have VBZ 36297 2926 3 been be VBN 36297 2926 4 subordinated subordinate VBN 36297 2926 5 to to IN 36297 2926 6 experimental experimental JJ 36297 2926 7 facts fact NNS 36297 2926 8 because because IN 36297 2926 9 the the DT 36297 2926 10 latter latter JJ 36297 2926 11 are be VBP 36297 2926 12 not not RB 36297 2926 13 affected affect VBN 36297 2926 14 by by IN 36297 2926 15 the the DT 36297 2926 16 inevitable inevitable JJ 36297 2926 17 changes change NNS 36297 2926 18 in in IN 36297 2926 19 theory theory NN 36297 2926 20 . . . 36297 2927 1 Much much JJ 36297 2927 2 of of IN 36297 2927 3 the the DT 36297 2927 4 literature literature NN 36297 2927 5 on on IN 36297 2927 6 this this DT 36297 2927 7 subject subject NN 36297 2927 8 is be VBZ 36297 2927 9 confusing confusing JJ 36297 2927 10 because because IN 36297 2927 11 of of IN 36297 2927 12 the the DT 36297 2927 13 lack lack NN 36297 2927 14 of of IN 36297 2927 15 care care NN 36297 2927 16 in in IN 36297 2927 17 the the DT 36297 2927 18 choice choice NN 36297 2927 19 of of IN 36297 2927 20 definitions definition NNS 36297 2927 21 and and CC 36297 2927 22 of of IN 36297 2927 23 limited limit VBN 36297 2927 24 value value NN 36297 2927 25 resulting result VBG 36297 2927 26 from from IN 36297 2927 27 carelessness carelessness NN 36297 2927 28 in in IN 36297 2927 29 specifying specify VBG 36297 2927 30 important important JJ 36297 2927 31 factors factor NNS 36297 2927 32 . . . 36297 2928 1 From from IN 36297 2928 2 this this DT 36297 2928 3 mass mass NN 36297 2928 4 of of IN 36297 2928 5 isolated isolated JJ 36297 2928 6 material material NN 36297 2928 7 the the DT 36297 2928 8 author author NN 36297 2928 9 has have VBZ 36297 2928 10 coördinated coördinate VBN 36297 2928 11 much much JJ 36297 2928 12 valuable valuable JJ 36297 2928 13 data datum NNS 36297 2928 14 . . . 36297 2929 1 The the DT 36297 2929 2 many many JJ 36297 2929 3 references reference NNS 36297 2929 4 which which WDT 36297 2929 5 are be VBP 36297 2929 6 included include VBN 36297 2929 7 increase increase IN 36297 2929 8 the the DT 36297 2929 9 usefulness usefulness NN 36297 2929 10 of of IN 36297 2929 11 the the DT 36297 2929 12 book book NN 36297 2929 13 . . . 36297 2930 1 LIGHTING LIGHTING NNP 36297 2930 2 THE the DT 36297 2930 3 HOME home NN 36297 2930 4 5 5 CD 36297 2930 5 x x SYM 36297 2930 6 7 7 CD 36297 2930 7 - - SYM 36297 2930 8 1/2 1/2 CD 36297 2930 9 , , , 36297 2930 10 illustrated illustrate VBN 36297 2930 11 , , , 36297 2930 12 289 289 CD 36297 2930 13 pages page NNS 36297 2930 14 $ $ $ 36297 2930 15 2.00 2.00 CD 36297 2930 16 This this DT 36297 2930 17 is be VBZ 36297 2930 18 a a DT 36297 2930 19 pioneer pioneer NN 36297 2930 20 book book NN 36297 2930 21 . . . 36297 2931 1 It -PRON- PRP 36297 2931 2 ranks rank VBZ 36297 2931 3 with with IN 36297 2931 4 books book NNS 36297 2931 5 on on IN 36297 2931 6 interior interior JJ 36297 2931 7 decoration decoration NN 36297 2931 8 and and CC 36297 2931 9 furniture furniture NN 36297 2931 10 as as IN 36297 2931 11 a a DT 36297 2931 12 help help NN 36297 2931 13 toward toward IN 36297 2931 14 transforming transform VBG 36297 2931 15 a a DT 36297 2931 16 house house NN 36297 2931 17 into into IN 36297 2931 18 a a DT 36297 2931 19 home home NN 36297 2931 20 . . . 36297 2932 1 It -PRON- PRP 36297 2932 2 is be VBZ 36297 2932 3 practical practical JJ 36297 2932 4 in in IN 36297 2932 5 that that IN 36297 2932 6 it -PRON- PRP 36297 2932 7 offers offer VBZ 36297 2932 8 advice advice NN 36297 2932 9 on on IN 36297 2932 10 all all DT 36297 2932 11 sorts sort NNS 36297 2932 12 of of IN 36297 2932 13 lighting lighting NN 36297 2932 14 problems problem NNS 36297 2932 15 and and CC 36297 2932 16 it -PRON- PRP 36297 2932 17 is be VBZ 36297 2932 18 fascinating fascinate VBG 36297 2932 19 reading reading NN 36297 2932 20 as as RB 36297 2932 21 well well RB 36297 2932 22 . . . 36297 2933 1 ARTIFICIAL ARTIFICIAL NNP 36297 2933 2 LIGHT LIGHT NNP 36297 2933 3 , , , 36297 2933 4 ITS its PRP$ 36297 2933 5 INFLUENCE INFLUENCE NNP 36297 2933 6 ON on IN 36297 2933 7 CIVILIZATION CIVILIZATION NNP 36297 2933 8 6 6 CD 36297 2933 9 x x SYM 36297 2933 10 9 9 CD 36297 2933 11 , , , 36297 2933 12 illustrated illustrate VBN 36297 2933 13 , , , 36297 2933 14 366 366 CD 36297 2933 15 pages page VBZ 36297 2933 16 $ $ $ 36297 2933 17 3.00 3.00 CD 36297 2933 18 This this DT 36297 2933 19 story story NN 36297 2933 20 of of IN 36297 2933 21 the the DT 36297 2933 22 achievements achievement NNS 36297 2933 23 of of IN 36297 2933 24 artificial artificial JJ 36297 2933 25 light light NN 36297 2933 26 is be VBZ 36297 2933 27 written write VBN 36297 2933 28 especially especially RB 36297 2933 29 for for IN 36297 2933 30 the the DT 36297 2933 31 man man NN 36297 2933 32 in in IN 36297 2933 33 the the DT 36297 2933 34 street street NN 36297 2933 35 who who WP 36297 2933 36 is be VBZ 36297 2933 37 not not RB 36297 2933 38 interested interested JJ 36297 2933 39 in in IN 36297 2933 40 technical technical JJ 36297 2933 41 scientific scientific JJ 36297 2933 42 terms term NNS 36297 2933 43 and and CC 36297 2933 44 formulae formula NNS 36297 2933 45 , , , 36297 2933 46 but but CC 36297 2933 47 who who WP 36297 2933 48 looks look VBZ 36297 2933 49 with with IN 36297 2933 50 admiration admiration NN 36297 2933 51 upon upon IN 36297 2933 52 the the DT 36297 2933 53 huge huge JJ 36297 2933 54 signs sign NNS 36297 2933 55 which which WDT 36297 2933 56 flash flash VBP 36297 2933 57 and and CC 36297 2933 58 sparkle sparkle VBP 36297 2933 59 above above IN 36297 2933 60 the the DT 36297 2933 61 crowds crowd NNS 36297 2933 62 on on IN 36297 2933 63 the the DT 36297 2933 64 Great Great NNP 36297 2933 65 White White NNP 36297 2933 66 Way Way NNP 36297 2933 67 , , , 36297 2933 68 who who WP 36297 2933 69 marvels marvel VBZ 36297 2933 70 at at IN 36297 2933 71 the the DT 36297 2933 72 colors color NNS 36297 2933 73 and and CC 36297 2933 74 brilliance brilliance NN 36297 2933 75 of of IN 36297 2933 76 a a DT 36297 2933 77 spectacular spectacular JJ 36297 2933 78 theatrical theatrical JJ 36297 2933 79 production production NN 36297 2933 80 and and CC 36297 2933 81 desires desire NNS 36297 2933 82 to to TO 36297 2933 83 know know VB 36297 2933 84 how how WRB 36297 2933 85 it -PRON- PRP 36297 2933 86 is be VBZ 36297 2933 87 accomplished accomplish VBN 36297 2933 88 , , , 36297 2933 89 and and CC 36297 2933 90 who who WP 36297 2933 91 takes take VBZ 36297 2933 92 a a DT 36297 2933 93 natural natural JJ 36297 2933 94 delight delight NN 36297 2933 95 in in IN 36297 2933 96 hearing hear VBG 36297 2933 97 about about IN 36297 2933 98 scientific scientific JJ 36297 2933 99 discoveries discovery NNS 36297 2933 100 when when WRB 36297 2933 101 they -PRON- PRP 36297 2933 102 are be VBP 36297 2933 103 explained explain VBN 36297 2933 104 in in IN 36297 2933 105 the the DT 36297 2933 106 simple simple JJ 36297 2933 107 , , , 36297 2933 108 vivid vivid JJ 36297 2933 109 language language NN 36297 2933 110 he -PRON- PRP 36297 2933 111 understands understand VBZ 36297 2933 112 best good JJS 36297 2933 113 . . . 36297 2934 1 THE the DT 36297 2934 2 LIGHTING LIGHTING NNP 36297 2934 3 ART ART NNP 36297 2934 4 , , , 36297 2934 5 ITS its PRP$ 36297 2934 6 PRACTICE practice NN 36297 2934 7 AND and CC 36297 2934 8 POSSIBILITIES possibility NNS 36297 2934 9 6 6 CD 36297 2934 10 x x SYM 36297 2934 11 9 9 CD 36297 2934 12 , , , 36297 2934 13 illustrated illustrate VBN 36297 2934 14 , , , 36297 2934 15 229 229 CD 36297 2934 16 pages page NNS 36297 2934 17 $ $ $ 36297 2934 18 2.50 2.50 CD 36297 2934 19 This this DT 36297 2934 20 book book NN 36297 2934 21 discusses discuss VBZ 36297 2934 22 lighting lighting NN 36297 2934 23 as as IN 36297 2934 24 engineering engineering NN 36297 2934 25 plus plus CC 36297 2934 26 art art NN 36297 2934 27 , , , 36297 2934 28 and and CC 36297 2934 29 treats treat VBZ 36297 2934 30 the the DT 36297 2934 31 subject subject NN 36297 2934 32 as as IN 36297 2934 33 a a DT 36297 2934 34 branch branch NN 36297 2934 35 of of IN 36297 2934 36 interior interior NNP 36297 2934 37 and and CC 36297 2934 38 exterior exterior NNP 36297 2934 39 decoration decoration NN 36297 2934 40 . . . 36297 2935 1 The the DT 36297 2935 2 technical technical JJ 36297 2935 3 aspect aspect NN 36297 2935 4 of of IN 36297 2935 5 the the DT 36297 2935 6 subject subject NN 36297 2935 7 is be VBZ 36297 2935 8 not not RB 36297 2935 9 neglected neglect VBN 36297 2935 10 , , , 36297 2935 11 but but CC 36297 2935 12 the the DT 36297 2935 13 main main JJ 36297 2935 14 emphasis emphasis NN 36297 2935 15 is be VBZ 36297 2935 16 upon upon IN 36297 2935 17 the the DT 36297 2935 18 " " `` 36297 2935 19 why why WRB 36297 2935 20 " " '' 36297 2935 21 and and CC 36297 2935 22 not not RB 36297 2935 23 merely merely RB 36297 2935 24 the the DT 36297 2935 25 " " `` 36297 2935 26 how how WRB 36297 2935 27 " " '' 36297 2935 28 of of IN 36297 2935 29 lighting lighting NN 36297 2935 30 . . . 36297 2936 1 THE the DT 36297 2936 2 LANGUAGE language NN 36297 2936 3 OF of IN 36297 2936 4 COLOR COLOR NNP 36297 2936 5 6 6 CD 36297 2936 6 x x SYM 36297 2936 7 9 9 CD 36297 2936 8 , , , 36297 2936 9 illustrated illustrate VBN 36297 2936 10 , , , 36297 2936 11 282 282 CD 36297 2936 12 pages page NNS 36297 2936 13 $ $ $ 36297 2936 14 2.00 2.00 CD 36297 2936 15 A a DT 36297 2936 16 practical practical JJ 36297 2936 17 volume volume NN 36297 2936 18 on on IN 36297 2936 19 color color NN 36297 2936 20 , , , 36297 2936 21 the the DT 36297 2936 22 various various JJ 36297 2936 23 fields field NNS 36297 2936 24 in in IN 36297 2936 25 which which WDT 36297 2936 26 it -PRON- PRP 36297 2936 27 is be VBZ 36297 2936 28 used use VBN 36297 2936 29 and and CC 36297 2936 30 its -PRON- PRP$ 36297 2936 31 importance importance NN 36297 2936 32 in in IN 36297 2936 33 portraying portray VBG 36297 2936 34 the the DT 36297 2936 35 ideas idea NNS 36297 2936 36 that that WDT 36297 2936 37 make make VBP 36297 2936 38 for for IN 36297 2936 39 progress progress NN 36297 2936 40 . . . 36297 2937 1 A a DT 36297 2937 2 book book NN 36297 2937 3 of of IN 36297 2937 4 special special JJ 36297 2937 5 interest interest NN 36297 2937 6 to to IN 36297 2937 7 all all PDT 36297 2937 8 those those DT 36297 2937 9 who who WP 36297 2937 10 deal deal VBP 36297 2937 11 in in IN 36297 2937 12 color color NN 36297 2937 13 schemes scheme NNS 36297 2937 14 and and CC 36297 2937 15 values value NNS 36297 2937 16 . . . 36297 2938 1 THE the DT 36297 2938 2 BOOK BOOK NNP 36297 2938 3 OF of IN 36297 2938 4 THE the DT 36297 2938 5 SKY sky NN 36297 2938 6 6 6 CD 36297 2938 7 x x SYM 36297 2938 8 9 9 CD 36297 2938 9 , , , 36297 2938 10 illustrated illustrate VBN 36297 2938 11 , , , 36297 2938 12 236 236 CD 36297 2938 13 pages page NNS 36297 2938 14 $ $ $ 36297 2938 15 3.50 3.50 CD 36297 2938 16 " " `` 36297 2938 17 The the DT 36297 2938 18 beauties beauty NNS 36297 2938 19 , , , 36297 2938 20 wonders wonder NNS 36297 2938 21 , , , 36297 2938 22 awesome awesome JJ 36297 2938 23 spectacles spectacle NNS 36297 2938 24 , , , 36297 2938 25 inspiring inspire VBG 36297 2938 26 panoramas panorama NNS 36297 2938 27 , , , 36297 2938 28 and and CC 36297 2938 29 extensive extensive JJ 36297 2938 30 ranges range NNS 36297 2938 31 of of IN 36297 2938 32 vision vision NN 36297 2938 33 which which WDT 36297 2938 34 await await VBP 36297 2938 35 the the DT 36297 2938 36 aerial aerial JJ 36297 2938 37 traveler traveler NN 36297 2938 38 , , , 36297 2938 39 make make VBP 36297 2938 40 of of IN 36297 2938 41 cloudland cloudland NN 36297 2938 42 a a DT 36297 2938 43 veritable veritable JJ 36297 2938 44 fairyland fairyland NN 36297 2938 45 if if IN 36297 2938 46 he -PRON- PRP 36297 2938 47 will will MD 36297 2938 48 open open VB 36297 2938 49 his -PRON- PRP$ 36297 2938 50 consciousness consciousness NN 36297 2938 51 to to IN 36297 2938 52 them -PRON- PRP 36297 2938 53 . . . 36297 2939 1 Aircraft aircraft NN 36297 2939 2 have have VBP 36297 2939 3 brought bring VBN 36297 2939 4 this this DT 36297 2939 5 new new JJ 36297 2939 6 world world NN 36297 2939 7 of of IN 36297 2939 8 experiences experience NNS 36297 2939 9 within within IN 36297 2939 10 easy easy JJ 36297 2939 11 reach reach NN 36297 2939 12 of of IN 36297 2939 13 mankind mankind NN 36297 2939 14 and and CC 36297 2939 15 it -PRON- PRP 36297 2939 16 is be VBZ 36297 2939 17 one one CD 36297 2939 18 of of IN 36297 2939 19 the the DT 36297 2939 20 aims aim NNS 36297 2939 21 of of IN 36297 2939 22 this this DT 36297 2939 23 volume volume NN 36297 2939 24 to to TO 36297 2939 25 awaken awaken VB 36297 2939 26 those those DT 36297 2939 27 who who WP 36297 2939 28 fly fly VBP 36297 2939 29 , , , 36297 2939 30 or or CC 36297 2939 31 would would MD 36297 2939 32 fly fly VB 36297 2939 33 , , , 36297 2939 34 to to IN 36297 2939 35 the the DT 36297 2939 36 variety variety NN 36297 2939 37 of of IN 36297 2939 38 interest interest NN 36297 2939 39 which which WDT 36297 2939 40 air air VBP 36297 2939 41 travel travel NN 36297 2939 42 affords afford NNS 36297 2939 43 . . . 36297 2939 44 " " '' 36297 2940 1 _ _ NNP 36297 2940 2 The the DT 36297 2940 3 _ _ NNP 36297 2940 4 Literature Literature NNP 36297 2940 5 of of IN 36297 2940 6 Engineering Engineering NNP 36297 2940 7 and and CC 36297 2940 8 the the DT 36297 2940 9 Industries Industries NNPS 36297 2940 10 ¶ ¶ ADD 36297 2940 11 On on IN 36297 2940 12 our -PRON- PRP$ 36297 2940 13 shelves shelf NNS 36297 2940 14 is be VBZ 36297 2940 15 the the DT 36297 2940 16 most most RBS 36297 2940 17 complete complete JJ 36297 2940 18 stock stock NN 36297 2940 19 of of IN 36297 2940 20 engineering engineering NN 36297 2940 21 , , , 36297 2940 22 scientific scientific JJ 36297 2940 23 , , , 36297 2940 24 technical technical JJ 36297 2940 25 and and CC 36297 2940 26 industrial industrial JJ 36297 2940 27 books book NNS 36297 2940 28 in in IN 36297 2940 29 the the DT 36297 2940 30 United United NNP 36297 2940 31 States States NNP 36297 2940 32 . . . 36297 2941 1 A a DT 36297 2941 2 large large JJ 36297 2941 3 number number NN 36297 2941 4 of of IN 36297 2941 5 these these DT 36297 2941 6 we -PRON- PRP 36297 2941 7 publish publish VBP 36297 2941 8 and and CC 36297 2941 9 for for IN 36297 2941 10 an an DT 36297 2941 11 ever ever RB 36297 2941 12 increasing increase VBG 36297 2941 13 number number NN 36297 2941 14 we -PRON- PRP 36297 2941 15 are be VBP 36297 2941 16 the the DT 36297 2941 17 sole sole JJ 36297 2941 18 agents agent NNS 36297 2941 19 . . . 36297 2942 1 ¶ ¶ ADD 36297 2942 2 _ _ NNP 36297 2942 3 All all DT 36297 2942 4 inquiries inquiry NNS 36297 2942 5 are be VBP 36297 2942 6 cheerfully cheerfully RB 36297 2942 7 and and CC 36297 2942 8 carefully carefully RB 36297 2942 9 answered answer VBN 36297 2942 10 and and CC 36297 2942 11 complete complete JJ 36297 2942 12 catalogs catalog NNS 36297 2942 13 as as RB 36297 2942 14 well well RB 36297 2942 15 as as IN 36297 2942 16 special special JJ 36297 2942 17 lists list NNS 36297 2942 18 are be VBP 36297 2942 19 sent send VBN 36297 2942 20 free free JJ 36297 2942 21 on on IN 36297 2942 22 request request NN 36297 2942 23 . . . 36297 2942 24 _ _ NNP 36297 2942 25 D. D. NNP 36297 2942 26 Van Van NNP 36297 2942 27 Nostrand Nostrand NNP 36297 2942 28 Company Company NNP 36297 2942 29 _ _ NNP 36297 2942 30 PUBLISHERS PUBLISHERS NNPS 36297 2942 31 AND and CC 36297 2942 32 BOOKSELLERS bookseller NNS 36297 2942 33 _ _ NNP 36297 2942 34 8 8 CD 36297 2942 35 WARREN WARREN NNP 36297 2942 36 STREET STREET NNP 36297 2942 37 NEW NEW NNP 36297 2942 38 YORK YORK NNP 36297 2942 39 Transcriber Transcriber NNP 36297 2942 40 's 's POS 36297 2942 41 Notes note NNS 36297 2942 42 : : : 36297 2942 43 Passages passage NNS 36297 2942 44 in in IN 36297 2942 45 italics italic NNS 36297 2942 46 are be VBP 36297 2942 47 indicated indicate VBN 36297 2942 48 by by IN 36297 2942 49 _ _ NNP 36297 2942 50 italics italics NNPS 36297 2942 51 _ _ NNP 36297 2942 52 . . . 36297 2943 1 Subscripted subscripted JJ 36297 2943 2 characters character NNS 36297 2943 3 are be VBP 36297 2943 4 indicated indicate VBN 36297 2943 5 by by IN 36297 2943 6 { { -LRB- 36297 2943 7 subscript subscript NN 36297 2943 8 } } -RRB- 36297 2943 9 . . . 36297 2944 1 The the DT 36297 2944 2 following follow VBG 36297 2944 3 misprints misprint NNS 36297 2944 4 have have VBP 36297 2944 5 been be VBN 36297 2944 6 corrected correct VBN 36297 2944 7 : : : 36297 2944 8 " " `` 36297 2944 9 imgaes imgae NNS 36297 2944 10 " " '' 36297 2944 11 corrected correct VBN 36297 2944 12 to to IN 36297 2944 13 " " `` 36297 2944 14 images image NNS 36297 2944 15 " " '' 36297 2944 16 ( ( -LRB- 36297 2944 17 page page NN 36297 2944 18 128 128 CD 36297 2944 19 ) ) -RRB- 36297 2944 20 " " `` 36297 2944 21 bove bove NN 36297 2944 22 " " '' 36297 2944 23 corrected correct VBN 36297 2944 24 to to IN 36297 2944 25 " " `` 36297 2944 26 above above RB 36297 2944 27 " " '' 36297 2944 28 ( ( -LRB- 36297 2944 29 page page NN 36297 2944 30 177 177 CD 36297 2944 31 ) ) -RRB- 36297 2944 32 " " `` 36297 2944 33 verticle verticle NN 36297 2944 34 " " '' 36297 2944 35 corrected correct VBN 36297 2944 36 to to IN 36297 2944 37 " " `` 36297 2944 38 vertical vertical JJ 36297 2944 39 " " '' 36297 2944 40 ( ( -LRB- 36297 2944 41 page page NN 36297 2944 42 239 239 CD 36297 2944 43 ) ) -RRB- 36297 2944 44 " " `` 36297 2944 45 colo colo NNP 36297 2944 46 " " '' 36297 2944 47 corrected correct VBN 36297 2944 48 to to IN 36297 2944 49 " " `` 36297 2944 50 color color NN 36297 2944 51 " " '' 36297 2944 52 ( ( -LRB- 36297 2944 53 Index Index NNP 36297 2944 54 ) ) -RRB- 36297 2944 55 Other other JJ 36297 2944 56 than than IN 36297 2944 57 the the DT 36297 2944 58 corrections correction NNS 36297 2944 59 listed list VBN 36297 2944 60 above above RB 36297 2944 61 , , , 36297 2944 62 inconsistencies inconsistency NNS 36297 2944 63 in in IN 36297 2944 64 spelling spelling NN 36297 2944 65 and and CC 36297 2944 66 hyphenation hyphenation NN 36297 2944 67 have have VBP 36297 2944 68 been be VBN 36297 2944 69 retained retain VBN 36297 2944 70 from from IN 36297 2944 71 the the DT 36297 2944 72 original original NN 36297 2944 73 . . . 36297 2945 1 The the DT 36297 2945 2 inverted inverted JJ 36297 2945 3 " " `` 36297 2945 4 8 8 CD 36297 2945 5 " " '' 36297 2945 6 and and CC 36297 2945 7 " " `` 36297 2945 8 S S NNP 36297 2945 9 " " '' 36297 2945 10 characters character NNS 36297 2945 11 at at IN 36297 2945 12 the the DT 36297 2945 13 top top NN 36297 2945 14 of of IN 36297 2945 15 page page NN 36297 2945 16 45 45 CD 36297 2945 17 can can MD 36297 2945 18 not not RB 36297 2945 19 be be VB 36297 2945 20 properly properly RB 36297 2945 21 represented represent VBN 36297 2945 22 in in IN 36297 2945 23 this this DT 36297 2945 24 text text NN 36297 2945 25 version version NN 36297 2945 26 . . .