An Archimedes' screw in water.
Animation showing how an Archimedes' screw functions. Alternatively, the cylindrical casing could be welded to and could rotate with the spiral screw.
Archimedes' screw (plural Archimedes' screws)
- A screwlike device invented by Greek mathematician Archimedes, ca. 200 BCE, which when twisted inside a cylinder, raises water from a lower level to a higher level, allowing irrigation of fields.
A screwlike device that raises water