it is expensive

Netherlands, also known as Holland

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Most of the wind-"mills" were actually wind-pumps built for polder-drainage.

Go into any store....your choice, ask them to carry the brand that you like.....with in 2 weeks I bet they will have it in stock. Safeway I guess is the best store...maybe try Wal Mart........which ever is closest!

Scottish Professor James Blyth in 1887.

go to windmill park with a giant crain and then pick the windmill and drop it to your school.

You will need a few things including:

blades, generator, hub, tower, battery and alternator

+ a few other things.

I made one last week with the plans at http://www.earth4energy.com/windpower.htm

You should check that out

Made of six to twelve sails covered in reed matting or cloth material

I take it that you are referring to a wind turbine? A wind turbine doesn't save energy; it generates energy. It can be argued that it is more 'eco-friendly', but of course it takes energy to manufacture and install wind turbines, and the only reason they are used is because they are heavily subsidised through increase energy bills to consumers; without these subsidies, wind turbines wouldn't even be considered as a practical source of energy. This is because the energy generated is appallingly-low, and their output cannot be guaranteed to match demand, and they are very expensive.

There are wind turbine towers that are as tall as 262 feet, installed in Texas, according to a scientific paper titled, "LARGE SCALE DEPLOYMENT OF RENEWABLE ENERGY BY COMBINING WIND FARMS WITH SOLAR THERMAL POWER PLANTS."

A windmill was used in the old days to help grind grain into flour. Today it is used to change wind or kinetic energy into electrical energy and place it out on the Electrical Grid for people to use.

The typical wind system delivers roughly 8 to 10% of what systems are rated at 28 MPH. If the wind gusts over this amount the system shuts down. If the wind falls to 14 MPH you see 10% of rated. At 11 MPH you see nothing. To compensate for this issue, fossil fuel plants run in the background. The energy they use and CO2 output is ignored because wind generators are connected.

The overall effect is that no useful power is ever created if you consider the fossil fuel plants idling. Check out the number of birds killed each year by wind and you have a really bad system. They should be banned.

Wind energy converts kinetic energy that is present in the wind into more useful forms of energy such as mechanical energy or electricity.Windmills that were used to grind grain are an example of early uses of wind energy. Modern uses of wind energy include generation of electricity and pumping water.

For convenience, they should be as close together as possible, especially in a kitchen or workshop, but for cost, they are usually placed at the maximum limit permitted by code, such as would permit a standard 6-foot lamp cord to reach anywhere along any wall mor than 14 inches wide, without crossing a doorway.

I installed 27 outlets in my kitchen, with at least four on every counter and island. Code only required 8.

Windmill sails Vane - Any of several usually relatively thin, rigid, flat, or sometimes curved surfaces radially mounted along an axis, as a blade in a turbine or a sail on a windmill, that is turned by or used to turn a fluid.

See the image in the link below

Some windmills were made to grind flour others were made for other purposes.

Put your hands above your head and just breath

1

How many windmills it takes to power a city depends on the amount and reliability of the wind, the power output of each windmill, and the power requirements of the city.

I believe they were used for irrigation. definitely to pump water out of the ground whether for crops or not.

There are two traditional Dutch style windmills located in Golden Gate Park in San Francisco. They were originally built in 1902 and 1905 and are 75 and 95 feet high, respectively. They can be viewed, but are in need of restoration.

There are also many other windmills located in California, but are for the most part conventional and are used to generate electrical energy from wind.

Orginally windmills were used as a source of power to turn stones to grind grain and make flour. Many can still be seen in places like The Netherlands. Wind turbines are a different mechanism and are used to collect wind power as a "green" alternative to using fossil fuels to make power.
Windmills provide energy to allow things to run. They are an alternate energy source that not many use, but are very good for the environment.

They were invented around the 9th century in Persia, Greater Iran, then became popular in the Middle East and Central Asia, later widespread to China and India.