Lynde, Carleton John, b. 1872 · New York : Macmillan · leaf 76
mes as heavy as water; on a day when the mer-cury is 30 high in a mercury barometer, how high will the water be ina water barometer? CHAPTER VII AIR APPLIANCES The lift pump. — The working of the Uft pump is illustratedin Fig. 42. There are two valves in the pump, each of whichopens upward. One… … (3) (4) (5) Fig. 42. — Showing how the lift pump works. suction pipe P- This decreases the air pressure in the barreland suction pipe and the pressure of the atmosphere, on thewater in the well, forces water up into the pump. Since the pressure of the atmosphere is sufficient to lift wateronly 23…
Physics · Home Economics
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