Wind Mill

A windmill is a machine that converts the energy of wind into rotational energy by means of vanes called sails.[1][2] Originally, windmills had been developed for milling grain for meals production. During history, the windmill machinery was designed to many various other industrial uses.[3] An important non-milling use is to pump water, because of land draining or to extract groundwater. Contents �[hide]� 5. 1 Windmills in antiquity * 2 Horizontal windmills * 3 Vertical windmills 5. 3. 1 Post mill 5. 3. 2 Hollow-post mill * 3. 3 Tower mill 2. 3. 4 Smock mill 2. 3. 5 Sails * three or more. 6 Machinery 2. 3. 7 Spread and drop * 4 Windpumps * 5 Wind turbine 2. 6 See as well * 7 References * 8 Further reading 2. 9 External links| -------------------------------------------------

Windmills in longevity

Heron's wind-powered organ

The windwheel of the Greek engineer Heron of Alexandria in the first century ADVERTISEMENT is the initial known occasion of using a wind-driven wheel to electrical power a machine.[4][5] Another early on example of a wind-driven tyre was the prayer wheel, which has been used in ancient Tibet and China since the fourth hundred years.[6] It has been believed that the Babylonian emperor Hammurabi planned to use wind power intended for his driven irrigation job in the 17th century BC.[7] -------------------------------------------------

Horizontally windmills

The Persian lateral windmill

Hooper's Mill, Margate, Kent, a great 18th-century Western horizontal wind mill The initial practical windmills had sails that rotated and balanced in a side to side plane, around a vertical axis.[8] According to Ahmad Y. al-Hassan, these panemone windmills were invented in eastern Persia as documented by thePersian geographer Estakhri in the 9th century.[9][10] The authenticity of your earlier anecdote of a windmill involving the second caliph Umar (AD 634–644) is usually questioned as it appears in a 10th-century record.[11] Made of 6 to 12 sails covered in reed matting or perhaps...



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