character: Dr. Johnson
topic: Sound Waves and Their Properties
grade: 10
subject: Physics
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character: Isaac Newton
topic: Historical Understanding of Sound
grade: 10
subject: Physics
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character: Albert Einstein
topic: Theoretical Perspectives on Sound Waves
grade: 10
subject: Physics
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character: William Thomson (Lord Kelvin)
topic: Acoustics and Sound Wave Behavior
grade: 10
subject: Physics
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