character: Thomas Edison
topic: Inventions and Their Influence on Innovation Laws
grade: 9
subject: Physics
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character: Nikola Tesla
topic: Competing Innovations in Electricity
grade: 9
subject: Physics
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character: Henry Ford
topic: Impact of Inventions on Mass Production
grade: 9
subject: Physics
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character: Alexander Graham Bell
topic: Communication Innovations and Patents
grade: 9
subject: Physics
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