Wind Mills
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wind mills
How does a wind mill work?
when u see all the wind mills together. and we make electicity with them. how does it work and how much is it to get a small one.
Newtons law of intertia.
Wind strikes an angled blade and is forced to change direction. A force equal to the force required to change the direction of the airflow, but in the opposite direction causes the blades to move in the direction of the reaction force.
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Dynamo.
The rotataing shaft turns a wheel that causes magnets to travel accross stationary magnets. The variation in the magnetic field generates an electric current.
Search the internet for prices, but unless you live on a forty acre ranch on a windy mountain pass, do not expect to generate enough electricity to power more than a loght bulb or two.
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Posted on: Saturday, May 2, 2009 at 6:07 pm 
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