Passive Amplifier

Demo Number 273
Location Shelf 48
Description A tuning fork doesn’t make much sound because the two tines oscillate opposite each other; the sound waves from the two sides destructively interfere. The interference can be reduced by placing a recently struck tuning fork near the hole in the box lid.
 Related Demos 183
  • Also note that in lower-pitched tuning forks, the fundamental frequency is amplified and can be clearly heard louder than the overtones.
  • Please return tuning forks to demo 183 shelf 49 after use.
  • The box is the demo, there is nothing included inside the box.

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This Demo is Part of the following Categories: 3B55 Interference and Diffraction of Sound