Merchant, F. W. (Francis Walter), 1855-1937, Chant, Clarence Augustus, 1865-1956 · Toronto : Copp Clark · leaf 268
ization of water. 291. Cold by Evaporation. In order to change a liquidinto vapour, heat is always required. Water placed over aflame is turned into vapour, the heat required being suppliedby tlie flame. If a little ether is j)Oured on the palm of thehand it vaporizes at once. Here the heat to… … Fig. 284.—Leslies experiment;freezing water by its ownevaporation. But it is soMictime.s possible to produce vaporization withoutsupplying heat from an outside source. In this case the heatcomes from the liquid itself, which must therefore fall intemperature. Indeed, it is possible, by ^producing…
Physics
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