character: Alexander Graham Bell
topic: Invention of the Telephone and Its Influence
grade: 10
subject: Physics
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character: Thomas Edison
topic: Impact of Inventions on Communication
grade: 10
subject: Physics
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character: Guglielmo Marconi
topic: Influence of Radio Communication
grade: 10
subject: Physics
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character: Nikola Tesla
topic: Advancements in Electrical Engineering
grade: 10
subject: Physics
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