12 Feb 2010

A perpetual motion machine

...if you don't count the energy Nature gives :)

"A hydraulic ram... takes in water at one "hydraulic head" (pressure) and flow-rate, and outputs water at a higher hydraulic-head and lower flow-rate... to develop pressure that allows a portion of the input water that powers the pump to be lifted to a point higher than where the water originally started... the ram is often useful, since it requires no outside source of power other than the kinetic energy of water."

Hattip to MG