character: Nikola Tesla
topic: Advancements in Wireless Communication Systems
grade: 12
subject: Physics
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character: Guglielmo Marconi
topic: Development of Radiotelegraphy
grade: 12
subject: Physics
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character: Alexander Graham Bell
topic: Early Innovations in Communication Technologies
grade: 12
subject: Physics
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character: Hedy Lamarr
topic: Frequency Hopping Spread Spectrum Technology
grade: 12
subject: Physics
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