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The Ancient Windmills of Nashtifan
Man's use of wind goes back to 3000 years ago. The first evidence for this claim can be found in Iran and China. Simple turbines used at that time had mostly vertical axis. Up to the beginning of 20th century, wind was often used to generate mechanical energy to draw up water or grind grains.
With the industrial revolution, fossil fuel powered engines replaced wind in an attempt to provide the industries with a more stable source of energy. However, in the start of the 1970s with the first oil price shock, once again the use of wind energy was given priority.
The Ancient Windmills of Nashtifan
The vertical-axis windmills of ancient Persia have been grinding flour for 1,000 years and counting.
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