Mercury Barometer

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“Mercury enclosed in a tube inverted and inserted into a bath of mercury can serve as a measurement of the atmospheric pressure, as the height of the mercury in the tube must directly correspond to the weight of the air pressing down on the bath of mercury underneath it.” —Hallock 1905


V. I. Hallock I.C.S. Refrence Library (Scranton: International Textbook Company, 1905) 9:3


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