Hydropower, or water-power is power that is generated from the energy of moving water, which may be harnessed for many useful purposes.
Before the availability of commercial electric power became widespread, hydro power was used for irrigation, and used to operate various machines, such as watermills, textile machines, sawmills, dock cranes, and domestic lifts.
Hydropower is one of the oldest methods used to harness energy, and has been used for hundreds of years. Water wheels and watermills were built in India; water powered mills produced flour from grain in Imperial Rome, and were also used for sawing timber and stone.
The power generated from a wave of water released from a tank was used to extract the metal ores in a method known as hushing. This was extensively used in Britain in the Medieval and later periods to extract lead and tin ores. The same method later evolved into hydraulic mining when used during the California gold rush.
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The Hydro Power
Water covers major part of the earth. It is of daily use and is essentially needed in our daily life....
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by noorJanuary 23, 2010
There are many causes that lead to Global warming, with each of the reasons contributing more to the increasing intensity of the climate change that has affected our planet.
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by Q. AB.January 20, 2010
United States had burned 1.1 billion short tons of coal in 2007, that is enough to fill a railroad car every 3 seconds. Almost over 90% coal was burnt by electricity sector and rest was burned mostly in industrial and commercial settings. Burning vast quantity of coal by power plants relies on a vast network of mines where companies excel at extracting it from the Earth at prolific rates.
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