character: Nikola Tesla
topic: Tesla's Work with AC Current and Wireless Transmission
grade: 12
subject: History
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character: Thomas Edison
topic: The War of Currents: AC vs DC Electricity
grade: 12
subject: History
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character: George Westinghouse
topic: Collaboration with Tesla on AC Power
grade: 12
subject: History
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character: Guglielmo Marconi
topic: Wireless Transmission and Early Radio Communication
grade: 12
subject: History
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