Elementary treatise on physics experimental and applied for the use of colleges and schools (1890)
Ganot, A. (Adolphe), 1804-1887, Atkinson, E. (Edmund) · New York : W. Wood · leaf 215
+//, and that below is 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 -1- >% over H -h, that is to say, to // + h. In the suction and force pump it is… … Fig. 206. 219. Fire-engrine.—Thefre-engine is a force-pump in which a steady jetis obtained by the aid of an air-chamber, and also by two pumps workingalternately (fig. 206). The two pumps fn and n, worked by the same leverPQ, are immersed in a tank, which is kept filled with water as long as the…
Physics
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