id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
16593	Clark, Bertha May	General Science			.txt	text/plain	98358	5803	75	The expansion of water can be easily shown by heating a flask (Fig. I) As the water is heated, it expands and forces its way up the The principle of hot-water heating is shown by the following simple In hot-water heating systems, fresh air is not brought to the rooms, large body of water is strongly heated at the equator, and then moves In convection, air and water circulate freely, carrying heat with a high temperature a small quantity of water, while in the second case of heat given out by 1 gram of water when its temperature falls 1° C., mercury is 30 times as easy to heat as water, and it requires only one and pass from the water into the air; steam comes from the vessel, and the water vapor set free by evaporation passes into the air, which When light passes from air into water or glass, the refracted ray is	./cache/16593.txt	./txt/16593.txt