Velocity of sound using Kundt's tube and digital function generator

Продукт No: P2150605


Cork dust in a glass tube is set into tiniest motion by a sound wave. If the frequency of the sound wave matches the natural frequency of the volume in the glass tube, a standing wave will form. The cork dust then assembles in visible patterns that show the nodes of pressure and motion of the standing wave. From the length of the volume and the number of the nodes the velocity of sound in the tube can be calculated for each natural frequency.


  • Two experiments in one: determination of the sound velocity and determination of the wavelength of standing waves
  • Easy frequency setting thanks to digital function generator


Determine the velocity of sound in air using Kundt's tube at different lengths of volume.

What you can learn about

  • Longitudinal waves
  • Sound velocity in gases
  • Frequency
  • Wavelength
  • Stationary waves
  • Natural frequency

Перечень материалов (вы́писка) Продукт Количество
PHYWE Digital Function Generator, USB 13654-99 1
Loudspeaker / Sound head, 8 ohms 03524-01 1
Tripod base PHYWE 02002-55 3
Kundt's apparatus 03475-88 1
Thermometer -10...+50 °C 38034-00 1
Universal clamp 37715-00 2
Cork dust, 3 g 03477-00 1
Measuring tape, l = 2 m 09936-00 1
Connecting cord, 32 A, 500 mm, red 07361-01 1
Connecting cord, 32 A, 500 mm, blue 07361-04 1
Rubber stopper,d=38/31mm,w/o hole 39260-00 1

Назад к перечню

Продукт No: P2150605

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