Nikola Tesla, with the Westinghouse Company, built an AC generator system for the world's fair that produced three times more power than used by the rest of Chicago.

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Furthermore, "Tesla had a large display including phosphorescent lighting (a precursor to fluorescent lamps) powered without wires by high-frequency fields and the Egg of Columbus. The success of the Tesla Polyphase System installed at the exposition ensured Westinghouse would be selected to harness Niagara."