character: Mr. Johnson
topic: Wave Properties of Light
grade: 9
subject: Physics
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character: Ms. Smith
topic: Refraction and Reflection of Waves
grade: 9
subject: Physics
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character: Mr. Lee
topic: Electromagnetic Spectrum Overview
grade: 9
subject: Physics
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character: Dr. Patel
topic: Interference and Diffraction in Light Waves
grade: 9
subject: Physics
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