character: Guglielmo Marconi
topic: Development of Wireless Communication
grade: 10
subject: Physics
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character: Nikola Tesla
topic: Influence on Wireless Technology
grade: 10
subject: Physics
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character: Hertz
topic: Electromagnetic Waves Discovery
grade: 10
subject: Physics
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character: David Sarnoff
topic: Radio Broadcasting Expansion
grade: 10
subject: Physics
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