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  Invented by Thomas Savery. The steam engine could effectively draw water from flooded mines using steam pressure
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  Invented by Alessandro Volta
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  Invented by Humphry Davy
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  Alexandre Edmond Becquerel discovered the photovoltaic effect which explains how electricity can be generated from sunlight.
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  George Bissell and Edwin L. Drake made the first successful use of a drilling rig on a well.
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  Created by James Blyth
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  Prince Piero Ginori Conti tested the first geothermal power generator
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  Plan devised by the U.S. Bureau of Reclamation
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  Discovered by German Otto Hahn and his assistant Fritz Strassmann
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  Invented by Bell Labs