Text-book of general physics, for the use of colleges and scientific schools (1899)
Hastings, Charles Sheldon · Boston: Ginn & company · leaf 138
one vessel to another. A form designed to elevate liquids subjectonly to the pressure of the atmosphere isshown in Fig. 84. D is a close-fitting pistonwhich moves up and down in the pumpbarrel HK. A, B, and Q are valves opening-upward. Suppose, for instance, that the piston ismoving upward. Then… … \ \ L Fig. Si. 128 MECHANICS OF FLUIDS. the air diminished by the pressure due to the weight of thecolumn of the liquid LK, will be forced open, allowing theportion of the barrel below D to fill. On the down strokeof the piston, B opens, equalizing the pressure above andbelow, while A is closed by…
Physics
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