the archimedes screw, archimedean screw or screwpump, is a machine historically used for transferring water from a low-lying body

apparatus archimedean archimedes axle ceredis clean common crank cylindrical device dirty ditch education engineering flow fresh hand helical irrigation knowledge liquid machine male man mechanic mechanical mechanism metal model nature old outdoor physics pipe pump rotate run sand science screw screwpump spiral system tool transferring turn water