id author title date pages extension mime words sentences flesch summary cache txt 35024 Multhauf, Robert P. Development of Gravity Pendulums in the 19th Century Contributions from the Museum of History and Technology, Papers 34-44 On Science and Technology, Smithsonian Institution, 1966 .txt text/plain 24066 1529 60 compound pendulum for the absolute determination of gravity. compound pendulum with only one knife edge, and swung it to determine 1669 determined the length of the seconds pendulum at Paris with a Peruvian expedition, he determined the length of the seconds pendulum at D. Cassini determined the length of the seconds pendulum pendulum in front of a seconds clock and determined the time of swing by pendulums to determine relative values of the length of the seconds earth by observing the times of swing of pendulums at the top and bottom After the adoption of the Repsold-Bessel reversible pendulum for gravity [Illustration: Figure 17.--REPSOLD-BESSEL REVERSIBLE PENDULUM apparatus use of convertible pendulums and absolute determinations of gravity, Peirce was encouraged to swing the Coast Survey reversible pendulum at Repsold-Bessel pendulum on the Geneva support and determined the effect copies of Peirce's paper on Faye's proposed method of swinging pendulums [92] "Pendulum Apparatus for Gravity Determinations," _Engineering_ ./cache/35024.txt ./txt/35024.txt