A natural philosophy : embracing the most recent discoveries in the various branches of physics, and exhibiting the application of scientific principles in everyday life .. (1899)
Quackenbos, G. P. (George Payn), 1826-1881 · New York, Cincinnati [etc.], American book company · leaf 168
is at rest. Fig. 174. The play of the valve E makes the machine self- nF acting. Suppose the pipe B to be filled from the res- ^aas^ ervoir; the valve E opens by its weight, and allows jf ^ some of the water to escape. Soon, however, the water acquires momen-tum enough to raise thevalve and close… … THE CHAIN
Physics
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