Merchant, F. W. (Francis Walter), 1855-1937, Chant, Clarence Augustus, 1865-1956 · Toronto : Copp Clark · leaf 150
hen a quick-movingone reaches the surface the force of attraction is not sufficientto restrain it and it escapes into the air. We say the liquidevaporates. When a liquid is heated the molecules are made to movemore rapidly and the collisions are more frequent. The resultis that the liquid expands… … Fio. 171.—Osmosis. 157. Osmosis. Over the opening of a thistle-tube let us tiea sheet of moistened parchment or other animal membrane(such as a piece of bladder). Then, having filled the funneland a portion of the tube with a strong solution of copper sulphate, let us supportit as in Fig. 171 in a…
Physics
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