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Stephen Gray's discovery of the conduction of electricity.
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Ben Frankline conducts energy experiment with lightning and a kite.
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The conversion of electrical energy into mechanical energy by Micheal Faraday
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Thomas edison demonstrates his light bulbDecember 31, 1879
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Charles Parson creates steam turbine
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Electron discovered by J. J. Thomson
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1st electric refriderator
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first geothermal heat pump
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first solar battery is created
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Hewlett-Packard launches its first PC