character: Dr. Emma Carter
topic: Understanding the Doppler Shift
grade: 9
subject: Physics
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character: Carl Sagan
topic: Exploring the Universe: The Doppler Effect in Astronomy
grade: 9
subject: Physics
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character: Marie Curie
topic: Waves and Their Applications: The Science of Sound and Light
grade: 9
subject: Physics
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character: Isaac Newton
topic: Fundamentals of Wave Motion and Frequency
grade: 9
subject: Physics
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