Carhart, Henry S. (Henry Smith), 1844-1920 · Boston : Allyn and Bacon · leaf 138
tube. Pascal performed twoexperiments to demonstrate that the columnof mercury is supportedby atmospheric pressure.In the first the mercury was replaced by lighter liquids,with the result that the height of the sustained columnwas always inversely proportional to the density of theliquid. In the… … Fig. 63. 128 MECHANICS. mercury column would fall. A fall of nearly eight centimetres was observed. The apparatus of Torricelli, when provided with a scalefor the purpose of reading the height of the column ofmercury, is called a barometer. Atmospheric pressure on a square centimetre of surfaceis…
Physics
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