character: Gustav Kirchhoff
topic: Electromagnetic Spectrum and Radio Waves
grade: 12
subject: Physics
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character: James Clerk Maxwell
topic: Electromagnetic Theory
grade: 12
subject: Physics
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character: Heinrich Hertz
topic: Discovery of Radio Waves
grade: 12
subject: Physics
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character: Nikola Tesla
topic: Wireless Transmission of Energy
grade: 12
subject: Physics
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