Merchant, F. W. (Francis Walter), 1855-1937, Chant, Clarence Augustus, 1865-1956 · Toronto : Copp Clark · leaf 77
Fig. 73.—Mercury column sustained bythe pressure of the air. HOW TO MEASURE PRESSURE OF ATMOSPHERE 69 Wliy does the mercury fall from the top of the tube ? Theatmosphere presses upon the surface of the mercury in theouter vessel and forces it up into the tube, but it is unableto raise it more tlian… … Fig. 74.
Physics
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