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Principle
If an emitter of sound or a detector is set into motion relative to the medium of propagation, the frequency of the waves that are emitted or detected is shifted due to the Doppler effect.
Benefits
- Easy frequency setting thanks to digital function generator
- Intuitive measuring instrument
- Results well reproducible because of the motor-driven car
Tasks
- Measure the Doppler shift for varying frequencies and velocities for a moving sound emitter. Compare the measurements with the values predicted by theory.
- Measure the Doppler shift for varying frequencies and velocities for a moving detector. Compare the measurements with the values predicted by theory.
Learning objectives
- Wave propagation
- Doppler shift of frequency
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Digital learning
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