I.C.S. reference library : a series of textbooks prepared for the students of the International Correspondence Schools and containing in permanent form the instruction papers examination questions, and keys used in their various courses (1904)
International Correspondence Schools · Scranton : International Textbook Co. · leaf 335
w. As the pistonrises it leaves a par-tial vacuum behind it,and the atmosphericpressure on the sur-face of the water in^^p the well causes it topf^^^ rise in the pipe P forthe same reason thatthe mercury rises inthe barometer tube. The water rushes up the pipe andlifts the suction valve V, filling… … FIG. 25. § 6 MECHANICS OF FLUIDS. 49 bottom of the cylinder, and also the pipe P. The instant thepiston begins its down stroke, the water in the chamber Bbegins to flow back into the well, and its downward flowforces the valve V to its seat, thus preventing any furtherescape of the water. As the…
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