Archimedean screw turbine

Archimedean screw turbine


Ashburton, United Kingdom (GB)
The Archimedes screw, also known as Archimedes' screw, the Archimedean screw or the screwpump is a machine historically used for transferring water from a low-lying body of water into irrigation ditches. It was one of several inventions and discoveries traditionally attributed to Archimedes in the 3rd century BC.

http://en.wikipedia.org/wiki/Archimedes%27_screw

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