A windmill is a mill that converts the energy of wind into rotational energy by
means of vanes called sails or blades. Centuries ago, windmills usually were
A dictionary definition explains it thus; it is a machine which is propelled by the
wind from a horizontal shaft which extended onto sails. Windmills still used today,
www.ask.com/youtube?q=What Are Windmills Used for&v=sdy0O8ia3bQ
Mar 22, 2013 ... Check out us at:http://www.tutorvista.com/content/physics/physics-ii/fission-and-
fusion/windmill.php Windmill Water Pump Windmills were used ...
The energy payback of a modern windmill (the time it takes to get back the
energy used to manufacture and install each windmill) is between 6 and 9
Vertical-axis windmills were also used in China, which is often claimed as their
birthplace. While the belief that the windmill was invented in China more than ...
Complete advice on installing Solar Panels and Wind Turbines. ... in use for
centuries, with the first windmill believed to used in Persia in the 9th century CE.
The terms wind energy or wind power describe the process by which the wind is
used to generate mechanical power or electricity. Wind turbines convert the ...
A windmill is a machine that harnesses the power of the wind. Windmills may be
used to grind grain into flour, to pump water, or to produce electricity.
In the Middle Ages most windmills were used as mills proper - for grinding corn
into flour, the inhabitants of the manor usually having to take their corn to the ...
Primarily, they were used either for grinding grain or pumping water. http://
telosnet.com/wind/early.html has a detailed history of early wind power and its