Johnson's natural philosophy and key to philosophical charts : illustrated with 500 cuts; being reduced photographic copies of all the diagrams contained in the author's philosophical series of indestructible school charts ; for the use of schools and families (1878)
Such screws are employed to elevate, besides water, ores, grain, etc.,and are commonly set at an inclination of about 45°. 172. Figure 17.—Hydraulic ram.—In this machine the mo-mentum of a part of the fluid in motion is effective in raising another Fig. 17. … portion ; and, by means of whicli, a large stream, with small fall, willelevate a small stream to a great height. Operation.—The water from the cistern or stream, S, runs downthrough the pipe, W, and out at the aperture, H, until the velocity ofthe current is sufficient to lift and close the…
Physics · Astronomy
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