character: Alexander Graham Bell
topic: Communication Innovations
grade: 10
subject: Physics
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character: Guglielmo Marconi
topic: Wireless Communication
grade: 10
subject: Physics
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character: Thomas Edison
topic: Electric Light and Sound Innovations
grade: 10
subject: Physics
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character: Nikola Tesla
topic: Alternating Current and Radio Technology
grade: 10
subject: Physics
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