Quick Answer: Doppler Effect Kit is a manually operated sound demonstration kit showing how the observed frequency of sound changes when the source and observer move relative to each other.
Last updated: October 2026
Key Features
Pitch heard higher as the source approaches and lower as it moves away
Manual classroom and laboratory demonstration
Covers wave motion, sound frequency, relative motion and acoustics
Secondary, senior secondary, undergraduate and teacher demonstration
About This Product
With the sound source set up, students listen for the change in pitch as it moves towards and away from them, an observation this Physics Miscellaneous Products kit then links to the theory of frequency shift in wave motion lessons.
Frequently Asked Questions
Q1. What do students hear during the demonstration? The pitch of the sound appears higher as the source approaches the observer and lower as it moves away.
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