Kundt’s tube

  • A tube containing cork dust with a speaker on one end and a piston on the other.
  • Speaker has optional frequencies.
  • Moving the piston alters the length of the medium. When the length of the medium equals a multiple of half the wavelength a standing wave can be witnessed.
  • Altering the frequency of the emitted sound wave and the position of the piston demonstrates the wave equation .

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