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ShusterTran468: Новая: "The windwheel of the Greek engineer Heron of Alexandria in the 1st century AD is the earliest known instance of using a wind-driven wheel to power a machine. Another early example of a...

2012-05-12T21:41:50Z

Новая: "The windwheel of the Greek engineer Heron of Alexandria in the 1st century AD is the earliest known instance of using a wind-driven wheel to power a machine. Another early example of a...

Новая страница

"The windwheel of the Greek engineer Heron of Alexandria in the 1st century AD is the earliest known instance of using a wind-driven wheel to power a machine. Another early example of a wind-driven wheel was the prayer wheel, which was used in ancient Tibet and China since the 4th century. It has been claimed that the Babylonian emperor Hammurabi planned to use wind power for his ambitious irrigation project in the 17th century BC.
Horizontal windmills

The Persian horizontal windmill
The first practical windmills had sails that rotated in a horizontal plane, around a vertical axis. According to Ahmad Y. al-Hassan, these panemone windmills were invented in eastern Persia as recorded by the Persian geographer Estakhri in the 9th century. The authenticity of an earlier anecdote of a windmill involving the second caliph Umar (AD 634–644) is questioned on the grounds that it appears in a 10th-century document. Made of six to twelve sails covered in reed matting or cloth material, these windmills were used to grind grain or draw up water, and were quite different from the later European vertical windmills. Windmills were in widespread use across the Middle East and Central Asia, and later spread to China and India from there.
A similar type of horizontal windmill with rectangular 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.

Hooper's Mill, Margate, Kent. An 18th Century European horizontal windmill
Horizontal windmills were built, in small numbers, in Europe during the eighteenth and nineteenth centuries, for example Fowler's Mill at Battersea in London, and Hooper's Mill at Margate in Kent. These early modern examples seem not to have been directly influenced by the horizontal windmills of the Middle and Far East, but to have been independent inventions by engineers influenced by the Industrial Revolution."
"Useful References
[http://www.windmillsforhomesnews.com/ windmills for homes]
[http://www.windmillsforhomesnews.com/ windmills for electricity]
[http://www.windmillsforhomesnews.com/ how windmills work]
[http://www.windmillsforhomesnews.com/ wind generators for sale]
[http://www.windmillsforhomesnews.com/ wind generators for home use]
[http://www.windmillsforhomesnews.com/ wind powered generator]
"

← Предыдущая		Версия 07:58, 26 декабря 2025
Строка 1:		Строка 1:
−		+	Content removed
−	"The windwheel of the Greek engineer Heron of Alexandria in the 1st century AD is the earliest known instance of using a wind-driven wheel to power a machine. Another early example of a wind-driven wheel was the prayer wheel, which was used in ancient Tibet and China since the 4th century. It has been claimed that the Babylonian emperor Hammurabi planned to use wind power for his ambitious irrigation project in the 17th century BC.
−	~~Horizontal windmills~~
−
−	~~The Persian horizontal windmill~~
−	The first practical windmills had sails that rotated in a horizontal plane, around a vertical axis. According to Ahmad Y. al-Hassan, these panemone windmills were invented in eastern Persia as recorded by the Persian geographer Estakhri in the 9th century. The authenticity of an earlier anecdote of a windmill involving the second caliph Umar (AD 634–644) is questioned on the grounds that it appears in a 10th-century document. Made of six to twelve sails covered in reed matting or cloth material, these windmills were used to grind grain or draw up water, and were quite different from the later European vertical windmills. Windmills were in widespread use across the Middle East and Central Asia, and later spread to China and India from there.
−	A similar type of horizontal windmill with rectangular 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.
−
−	~~Hooper's Mill, Margate, Kent. An 18th Century European horizontal windmill~~
−	Horizontal windmills were built, in small numbers, in Europe during the eighteenth and nineteenth centuries, for example Fowler's Mill at Battersea in London, and Hooper's Mill at Margate in Kent. These early modern examples seem not to have been directly influenced by the horizontal windmills of the Middle and Far East, but to have been independent inventions by engineers influenced by the Industrial Revolution."
−	~~"Useful References~~
−	~~[http://www.windmillsforhomesnews.com/ windmills for homes]~~
−	~~[http://www.windmillsforhomesnews.com/ windmills for electricity]~~
−	~~[http://www.windmillsforhomesnews.com/ how windmills work]~~
−	~~[http://www.windmillsforhomesnews.com/ wind generators for sale]~~
−	~~[http://www.windmillsforhomesnews.com/ wind generators for home use]~~
−	~~[http://www.windmillsforhomesnews.com/ wind powered generator]~~
−	"

← Предыдущая	Версия 07:58, 26 декабря 2025
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