character: Nikola Tesla
topic: Advancements in Electrical Communication Technologies
grade: 10
subject: Physics
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character: Guglielmo Marconi
topic: Development of the Wireless Telegraph
grade: 10
subject: Physics
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character: Thomas Edison
topic: Impact on Electrical Systems and Communication
grade: 10
subject: Physics
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character: Alexander Graham Bell
topic: Invention of the Telephone and Its Influence
grade: 10
subject: Physics
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