Topic
Archimedes' screw.
machine used for transferring water from a low-lying body of water into irrigation ditches
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About Archimedes' screw
An Archimedes' screw is a hydraulic machine composing of an outer cylinder and an inner cylinder with helical blades. It can be operated both as a pump and a power generator, though it has been used for other purposes, such as drainage and sewage management.
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