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A windmill is a machine that is powered by the energy of the wind. It is designed to convert the energy of the wind into more useful forms using rotating blades or sails. The term also refers to the structure it is commonly built on. In much of Europe, windmills served originally to grind grain, though later applications included pumping water and, more recently, generation of electricity. Recent electricity-generating versions are referred to as ''wind turbines.

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Wikipedia About Windmills

A windmill is a machine that is powered by the energy of the wind. It is designed to convert the energy of the wind into more useful forms using rotating blades or sails. The term also refers to the structure it is commonly built on. In much of Europe, windmills served originally to grind grain, though later applications included pumping water and, more recently, generation of electricity. Recent electricity-generating versions are referred to as ''wind turbines.

Vertical axis windmills

The first practical windmills were the vertical axle windmills invented in eastern Persia, as recorded by the Persian geographer Estakhri in the 9th century.Ahmad Y Hassan, Donald Routledge Hill (1986). Islamic Technology: An illustrated history, p. 54. Cambridge University Press. ISBN 0-521-42239-6. The authenticity of an earlier anecdote of a windmill involving the second caliph Umar (AD 634–644) is questioned on the grounds of being a 10th-century amendment. Made of six to twelve sails covered in reed matting or cloth material, these windmills were used to grind corn or draw up water, and quite different from the later European versions. They were widely used throughout the Caliphate by the 9th century and spread to Europe through Islamic Spain. A similar type of vertical shaft windmill with rectangle blades, used for irrigation, can also be found in 13th-century China (during the Jurchen Jin Dynasty in the north), introduced by the travels of Yelü Chucai to Turkestan in 1219.Needham, Volume 4, Part 2, 560.

Fixed windmills

Medieval depiction of a windmill Fixed windmills, oriented to the prevailing wind were, for example, extensively used in the Cyclades islands of Greece. The economies of power and transport allowed the use of these 'offshore' mills for grinding grain transported from the mainland and flour returned. A 1/10th share of the flour was paid to the miller in return for his service. This type would mount triangular sails when in operation.

Windmills that turn to face the wind

In northwestern Europe, the horizontal-shaft or vertical windmill (so called due to the dimension of the movement of its sails) dates from the last quarter of the 12th century in the triangle of northern France, eastern England and Flanders. Joseph Needham states that the earliest known reference came in 1191 by a Dean Herbert of East Anglia, who supposedly competed with the mills of the abbey of Bury St Edmunds. These earliest mills were used to grind cereals. The evidence at present is that the earliest type was the post mill, so named because of the large upright post on which the mill's main structure (the "body" or "buck") is balanced. By mounting the body this way, the mill is able to rotate to face the (variable) wind direction; an essential requirement for windmills to operate economically in North-Western Europe, where wind directions are various. By the end of the thirteenth century the masonry tower mill, on which only the timber cap rotated rather than the whole body of the mill, had been introduced. In the Netherlands these stone towerlike mills are called "round or eight-sided stone stage mills, ground-sailers (windmills with sails reaching almost down to the ground), mound mills, etc." (Dutch: ronde/achtkante stenen stelling molens, grond-zeilers, beltmolens, etc.). Dutch tower mills ("torenmolens") are always cylindrical (such as atop castle or city wall towers). Because only the cap of the tower mill needed to be turned the main structure could be made much taller, allowing the sails to be made longer, which enabled them to provide useful work even in low winds. Such mills often have a small auxiliary set of sails called a fantail at the rear of the cap and at right angles to the sails; this rotates the cap through gearing so the sails face into the wind.

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News about Windmills

Tower Tech ramping up production

Abilene Reporter-NewsThink of the floor of a reasonably large bedroom covered by a sheet of steel an inch and a half thick. Think how heavy and unwieldy it would be.http://reporternews.com/news/2009/may/09/tower-tech-ramping-...

Cruisin' Route 66 from Okla. to N.M.

ABC News'GMA Weekend' anchor Kate Snow and her sister drive old Route 66 for kicks.http://abcnews.go.com/GMA/Travel/story?id=7543193&page=1

Roadshow: Solo-driver tolls coming to Bay Area carpool lanes

Los Angeles Daily NewsCarpoolers will still ride for free, but tolls will provide enough money for California Highway Patrol enforcement to nab cheaters.http://www.dailynews.com/business/ci_12219468?source=rss

Take psychedelic road trip through Southern California deserts

San Ramon Valley TimesFrom the rainbow patchwork of Salvation Mountain to the artsy town of Joshua Tree, Southern California offers more than hot sand in its deserts.http://www.contracostatimes.com/valleytimes/ci_12263770?sour...

Five Summer Splurges for Less than $10

Lexington Clipper-Herald(ARA) - Even if you, like many Americans, are staying close to home this summer, you don't have to miss out on warm-weather indulgences. Despite lingering financial concerns, simple summer splurges still abound.http://www.lexch.com/articles/2009/05/09/ara/seasonal/8653.t...

News about Windmills

'Don Quixote' tilts at windmills at the Grand; Three Sacks Full takes ...

Wausau Daily HeraldThe ballet Don Quixote will be performed at 7:30 p.m. at the Grand Theater, 415 N. Fourth St., Wausau. The ballet is based on the Miguel de Cervantes novel. Tickets cost $42, $47, $52 and $62. Call 842-0988 for more informationhttp://www.wausaudailyherald.com/article/20090506/WDH0501/90...

SCC outreach is more than bluster

Vallejo Times-HeraldThe windmills the Shiloh Wind Power Plant belonging to Iberdrola power company share the land with the farmers and landowners, who can harvest crops, like this wheat, in the shadows of the installations. (Mike Jory/Times-Herald) http://www.timesheraldonline.com/ci_12332997?source=most_ema...

Must housing be rationed?

Belfast TelegraphQueues outside the Co-Ownership Housing Association, and Social Development Minister Margaret Ritchie wasting taxpayers’ money in the High Court tilting at UDA windmills like a female Quixotic knight. It is obviously time for Diogenes to roll out ... http://www.belfasttelegraph.co.uk/opinion/letters/must-housi...

Is China really going green?

Daily Telegraph ... the traders of the Silk Road, swallowing whole caravans in blinding storms of dust, are being used to power plans for a new, green revolution for China's energy-hungry economy. At Dabancheng, a few miles outside the city, great forests of windmills ... http://www.telegraph.co.uk/news/worldnews/asia/china/5258622...

Siemens to Settle Corruption Case

BusinessWeekThe most important thing is that Siemens engineers will face less distraction as they focus on making the best X-ray machines, high-speed trains, windmills and other high-tech products. If Siemens can prove that it can win business without greasing ... http://www.businessweek.com/globalbiz/blog/europeinsight/arc...

Search results for Windmills

Vintage Windmills

MENU LOADING. Dynamic Menu. requires. Netscape 4+ IE 4+http://www.vintagewindmills.com/

Windmills 806-747-8734

A Museum for the American Style Water Pumping Windmill and Related Machinery with Exhibits on Wind Electric. An extensive site about windmills, (especially in the USA), illustratedhttp://www.windmill.com/

Windmills.ca~~....Where water quality is everything

Windmills.ca, Authorized Canadian Dealer for Koender Windmill Aerators for Pondshttp://www.windmills.ca/

Brasada Windmills - Aermotor Windmills with Wood or Steel Towers

Builds wooden windmill towers. Also offers Aeromotor mill and metal towers for sale. Includes product and contact information.http://www.texaswindmills.com/

Windmills of Texas Home

Windmills of Texas is an authorized dealer for the Aermotor Company, providing windmills plus wooden and steel towers to pump or aerate water.http://www.windmillsoftexas.com/

Wikipedia results for Windmills

Windmill - Wikipedia, the free encyclopedia

A windmill is a machine that is powered by the energy of the wind. It is designed to convert the energy of the wind into more useful forms using rotating blades or sails.http://en.wikipedia.org/wiki/Windmill

Don Quixote - Wikipedia, the free encyclopedia

Don Quixote is the subject of the song Windmills on the album The Village Lanterne released in 2006 by Renaissance-inspired folk rock band Blackmore's Night.http://en.wikipedia.org/wiki/Don_Quixote

Category:Windmills - Wikipedia, the free encyclopedia

Subcategories. This category has the following 17 subcategories, out of 17 total. http://en.wikipedia.org/wiki/Category:Windmills

List of windmills in the United Kingdom - Wikipedia, the free ...

This list of windmills in the United Kingdom is for any windmills or windpumps in the United Kingdom. Although the Isle of Man and the Channel Islands are not in the United Kingdom ... http://en.wikipedia.org/wiki/Windmills_in_the_United_Kingdom

Windmills of the Gods - Wikipedia, the free encyclopedia

Windmills of the Gods is a 1987 thriller novel by American writer Sidney Sheldon. Plot summary. Mary Ashley, a professor at the Kansas State University is offered an ambassadorship ... http://en.wikipedia.org/wiki/Windmills_of_the_Gods
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Videos found for Windmills

How To Windmill

How To WindmillMy video guide on how to do windmills.Flash - Video

The world's oldest windmills

The world's oldest windmillsWindmills have been used in Iran as early as the 7th century AD. Some of these are still operational in Nashtifan, near Khaf, northern east of IranFlash - Video

Future in windmills

Future in windmillsTed Rowlands talks to Virginia Cha about a man who lost his job but has found a new career in maintaining windmills.Windows Media - Video

NETHERLANDS: Dutch proclaim 2007 as...

NETHERLANDS: Dutch proclaim 2007 as the Year of the Windmill, as 30 percent need immediate restorati...As the Netherlands celebrate the Year of the Windmill, the country is working to restore the country's symbol. The Dutch Windmill Association has proclaimed 2007 as the Year of...MPEG 4 - Video

Human Windmill

Human WindmillA group of Belgian kids get together to save the polar bear and have fun with windmills...Flash - Video

Answers for Windmills

misty_dawn1100Windmills?misty_dawn1100yes, but "not that way" we've got to find a better way......until eveything is gone...Mr. Formaldo you think the windmills in kansas that produces electricity is ?Mr. FormalAdding more alternative power sources, such as wind turbines today and other sources soon, is not a question. We have to do it. The challenge in fulling utilizing wind power, is moving the electrici...peaceisnotfreeWhat impact do windmills have on the rotation of the Earth?peaceisnotfreeHmmmm! it makes it go round and round_SushiHow do ancient windmills work?_SushiThe wind turns the vanes (the things that look like propellers) and the shaft for that is connected via gears to a grindstone or turns the shaft of a wheel. The wheel would be connect to a rod that m...ZinshinWhat are some trusted sources of information of windmills? Also, recommend a book on it?ZinshinThe first link below covers the history of windmills extensively, but only just touches on modern day wind power sources. It does have a great selection of book references though, including several d...
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