PolyPhysicsEcho ranging and Doppler10–15 min
Sonar Ranger
Window an ultrasonic echo to find distance with d = vt/2 in air or water, then find a moving source’s speed from its Doppler shift.
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The experiment opens when it comes into view.
Theory and model assumptions
Window an ultrasonic echo to find distance with d = vt/2 in air or water, then find a moving source’s speed from its Doppler shift.
Teacher guidance
Poly engineering science: sound, ultrasonic ranging and the Doppler effect (generic)
Expected time: 10–15 minutes.