character: Guglielmo Marconi
topic: Development of the Wireless Telegraph
grade: 10
subject: Physics
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character: Nikola Tesla
topic: Contributions to Radio Technology
grade: 10
subject: Physics
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character: Heinrich Hertz
topic: Discovery of Electromagnetic Waves
grade: 10
subject: Physics
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character: Alexander Graham Bell
topic: Inventions in Communication Technology
grade: 10
subject: Physics
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