the most ancientmachines for raising water, and is still employed in some 278 Hydrostatics and Elementary Hydrokinetics. countries. It is often called the 8crew of Archimedes, be-cause its invention is supposed to be due to the philosopherof Syracuse. There is, however, reason to think that itwas… … Fig. 72. //, B, the axis (and, with it, the screw) being able to revolvefreely. Both ends of the spiral pipe are open, and thelower is immersed in the water which is to be raised to thelevel U. The revolution of the screw can be effected in variousways : in the figure it is re])resented as produced…
Hydrostatics · Hydrodynamics
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