Thursday, 19 June 2014 15:15


Additional Info

  • ID Code: H3-22
  • Purpose: Demonstrate standing waves in a closed tube.
  • Description: An air column in a tube is excited by an oscillator and loudspeaker at one end of the tube and stopped with a plunger at the other end. Vary the frequency of the oscillator or the position of the plunger to obtain the resonance, which can be easily heard. Because this is a closed tube, resonances exist at odd multiples of one-quarter wavelength. Using this device standing waves can be demonstrated, the wavelength of a sound wave shown, and the speed of sound determined.

    Invite students to make predictions about the changing resonant frequencies before adjusting, to encourage student engagement.

  • Availability: Available
Read 1938 times Last modified on Tuesday, 08 September 2020 16:02
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