Doppler effect apparatus
Doppler-effect apparatus: a rotating sound source demonstrates changes in pitch in four experiments.
Setup to demonstrate the Doppler effect for sound waves. It consists of a base with a rotation drive and a control panel, a guide beam with a slider, a sound emitter with a switch, a counterweight and a remote control. Designed for four experiments: a change in the perceived frequency when the source moves, an increase and decrease in pitch when the emitter approaches and moves away, and the dependence of the Doppler shift on the speed of the source. Used in the section “Mechanical Vibrations and Waves”.
- 1.Base with rotation drive and control panel - 1 pc.
- 2.Guide (beam) with slider - 1 pc.
- 3.Sound emitter (buzzer) with power switch - 1 pc.
- 4.Counterweight (weight) - 2 pcs.
- 5.Remote control - 1 pc.
- Doppler effect for sound waves: change in perceived frequency as the source moves relative to the observer
- Increase in pitch (increase in perceived frequency) as the sound source approaches a stationary observer
- Lowering of pitch (decreasing perceived frequency) as the sound source moves away from the observer
- Dependence of the Doppler frequency shift on the speed of the sound source
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