character: Heinrich Hertz
topic: Discovery of Radio Waves
grade: 12
subject: History
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character: Guglielmo Marconi
topic: Development of Radio Communication
grade: 12
subject: History
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character: Nikola Tesla
topic: Contributions to Radio Technology
grade: 12
subject: History
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character: James Clerk Maxwell
topic: Theoretical Foundations of Electromagnetic Waves
grade: 12
subject: History
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