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Water clocks were invented by the greeks to measure the hourly time at night. This "water Clock" was 2 stone buckets, 1 on top of the other. The one on top would drip water through a small hole at the bottom. The bottom bucket had lines drawn in it to measure the water collected. By measuring how much water driped out in an hour, they could roughly predict an hour.
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The first water wheel was invented by the egyptions. The wheel would be half submegered in a river or stream and would catch water in its buckets which would later be used for irrigation.
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Water mills were constructed in the middle East to grind grains to make flour.
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Water mills became an important resource in England. By the 19th century, there were about 20,000 mills.
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Daniel Joncairs was the first person to ultilize the power of Niagra He built a small canal and a waterwheel that powered his saw mill.
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The Industrial Revolution relied heavily on the water wheel for many reasons, mostly textile mills.
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Canal building was at its peak, hydroelectric power was used to transport barge traffic up and down steep hills.
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Marcel Deprez built the first long distance DC transmission to date in Germany
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The world's first hydroelectric plant began operation.
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Ireland's first hydroelectric power plant was made in Portrush.
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The U.S. had about 200 hydropower plants.
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Hydroelectric power plants generate about 40% of energy for the United States.
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Hydro electricity accounts for 94% of Canada's electricity.
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Now hydropower accounts for 20% of all energy generated.