Elementary treatise on physics, experimental and applied : for the use of colleges and schools (1906)
Ganot, A. (Adolphe), 1804-1887, Atkinson, Edmund, 1831-1901, Reinold, A. W. (Arnold William), 1843-1921 · New York : Wood · leaf 225
sly H + //, and that below is H —h, sincethe weight of the column h tends to counterbalance the atmospheric pressure.But as the pressure H—h tends to raise the piston, the effective resistanceis equal to the excess of H + // over H—h ; that is to say, to h + h. In the suction- and force- pump it is… … Fig. 218220. Fire-engine.—The fire-engine is a force-pump in which a steady jetis obtained by the aid of an air-chamber, and also by two pumps working 2o8 On Gases [220- alternately (fig. 218). The two pumps ni and «, worked by the same lever,PQ, are immersed in a tank, which is kept filled with…
Physics
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