Pan Pipes - 06.16

Longer pipes amplify low-pitched low-frequency sounds, and shorter pipes amplify high-pitched high frequency sounds.

The room is filled with sounds of all different pitches. Each pipe responds to sounds of one particular pitch. The air in each tube vibrates with a frequency determined by the length of the tube. The background noise in a room contains virtually all audible frequencies, and is capable of creating resonant vibrations in each of the tubes. Longer pipes amplify low-pitched low-frequency sounds, and shorter pipes amplify high-pitched, high frequency sounds.

  1. Put your ear at the bottom of each pipe.
  2. Listen carefully.
  3. Do you notice any difference?

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