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  • Date :
  • 1/9/2011

Fact of the Day: Windmills


Like waterwheels, windmills were among the original prime movers that replaced human beings as a source of power; the earliest known reference to windmills date to c 900 AD Persia. Persian millwrights were taken prisoner by the forces of Genghis Khan and sent to China to instruct in the building of windmills.

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