Description: By adjusting the length of one sound wave, you can find loud and quiet spots, corresponding to constructive and destructive interference.
- Acoustic Interferometer
- Tone Generator
- Push the end of the interferometer in all the way; both sides should be roughly the same length
- Put the speaker into one of the open ends
- Slide one of the sides of the interferometer until you hear loud nodes and quiet nodes.
- The change in sound can be quiet, so having a microphone at the other open end of the interferometer makes the effect clearer.