character: Joseph Swan
topic: Parallel Innovations in Light Bulb Technology
grade: 8
subject: Social Studies
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character: Thomas Edison
topic: Development of the Electric Light Bulb
grade: 8
subject: Social Studies
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character: Sir Hiram Maxim
topic: Contributions to Electrical Engineering
grade: 8
subject: Social Studies
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character: Westinghouse
topic: Alternating Current vs. Direct Current Debate
grade: 8
subject: Social Studies
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