Cincinnati Observatory
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Daniel, John Frederic
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Edison, Thomas
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electric car
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Electrolysis
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Gravity cell
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Grove, William Robert
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Hofmann Demonstration Apparatus
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Hofmann, August Wilhelm von, 1818-1892
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lalande cell
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lead storage battery
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Meidinger cell
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Mitchel, Ormsby
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nickel-iron alkaline battery
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Nitric acid voltaic cell
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Retorts (Equipment)
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Silliman, Benjamin Jr.
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Twichell, Ernest
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Twichell, Henry
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Twitchell, George
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