At the 1893 Columbian Exposition in Chicago, 160,000 light bulbs lit up the evening sky over Chicago. Westinghouse had outfoxed Edison, winning the contract to wire the Exposition with alternating current.
During the last part of the 19th century, George Westinghouse had made his fortune through his invention, the railroad air brake.
Nikola Tesla stunned audiences when he wirelessly lit up glass tubes filled with gas. He called it cold light.
In Nikola Tesla's original contract with George Westinghouse, the inventor was promised a bonus of $2.50 for every horsepower of alternating current sold.