Archimedes' screw


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Ar·chi·me·des' screw

 (är′kə-mē′dēz)

Archimedes' screw

(ˌɑːkɪˈmiːdɪən; -mɪˈdiːən) or

Archimedean screw

n
(Mechanical Engineering) an ancient type of water-lifting device making use of a spiral passage in an inclined cylinder. The water is raised when the spiral is rotated

Ar′chime′des' screw′


n.
a device consisting essentially of a spiral passage within an inclined cylinder for raising water to a height when rotated.
[1860–65]
References in periodicals archive ?
For those not familiar with the Archimedes' screw technique, it is a method of pumping water from a lower level to a higher level, usually for irrigation purposes, that has begun to be used to generate hydroelectric power during the past 10 years.
Fourth are innovations extending life, including the moldboard plow, the green revolution, Archimedes' screw, penicillin, vaccination, and refrigeration.
Called an "Archimedes' Screw" it dates back to the third century BC and is used to draw water.
Part of the restoration was the installation of an original waterwheel and an Archimedes' screw.
"Despite the Archimedes' screw being an ancient concept, there is still no better way of moving' unscreened sewage and flood waters over short distances" says Jamie Wesley, engineering contracts manager at Deritend Industries, the plant equipment and maintenance firm that has handled many of these types of installations.
The invention of the Archimedes' screw, a mechanical water pump, has been attributed to Archimedes in the 3rd century BC.
The boys also investigated Newton's apple, how a pop-up toaster works, Archimedes' screw and how an element heats a kettle.
Earmarked for land along the River Wear, the 3.2-acre scheme includes an Archimedes' Screw mill harnessing the river's energy.