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Electricity generation using water Have you seen photos of the Niagara Falls in southeastern Ontario, Canada? They are perhaps the most spectacular water falls in the world.
The runner of the small water turbine A water turbine is a rotary engine that takes energy from moving water . Water turbines were developed in the 19th century and were widely used for industrial power prior to electrical grids . Now they are mostly used for electric power generation. [ edit ] History
So just how do we get electricity from water? Actually, hydroelectric and coal-fired power plants produce electricity in a similar way. In both cases a power source is used to turn a propeller-like piece called a turbine, which then turns a metal shaft in an electric generator , which is the motor that produces electricity. A coal-fired power plant uses steam to turn the turbine blades; whereas a hydroelectric plant uses falling water to turn the turbine. The results are the same.
Die Geschichte der Wasserkraft Seit mehr als vier Jahrtausenden ist die Wasserkraftnutzung zur Arbeitserleichterung des Menschen bekannt. Wasserräder zur Umwandlung der kinetischen Energie des strömenden Wassers in mechanische Energie lassen sich bis in das 3. Jahrtausend v. Chr. in China und im Vorderen Orient zurückverfolgen.