character: Nikola Tesla
topic: Contribution to Radio Technology
grade: 9
subject: Science
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character: Guglielmo Marconi
topic: Development of Wireless Communication
grade: 9
subject: Science
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character: James Clerk Maxwell
topic: Electromagnetic Waves and Their Theories
grade: 9
subject: Science
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character: Heinrich Hertz
topic: Experimental Validation of Electromagnetic Waves
grade: 9
subject: Science
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