Chladni figures with the FG module and Cobra3

 Product No: P2150515

Principle

To show the two-dimensional standing waves on the surface of a square or circular plate.

Tasks

A frequency generator is connected to a sound head. The sound head drives a Chaldni plate. White sand is sprinkled randomly to cover the entire black surface of the plate. Drive the plate at a predetermined harmonic frequency and the sand will migrate into the nodal regions. A well defined standing wave pattern can be clearly seen in the first photo. The circular and square Chladni plates will create characteristic patterns. Adjust the oscillator slowly in the 0.2 to 2 kHz frequency range and watch for the pattern to emerge when a harmonic is tuned.

What you can learn about

  • Wavelength
  • Stationary waves
  • Natural vibrations
  • Two-dimensional standing waves



Materiallist (Excerpt) Product Amount
LF amplifier, 220 V 13625-93 1
Cobra3 BASIC-UNIT, USB 12150-50 1
Measuring module function generator 12111-00 1
Software Cobra3 PowerGraph 14525-61 1
Loudspeaker/Sound head 03524-00 1
Sound pattern plates 03478-00 1
Power supply 12V / 2A 12151-99 2
Support base variable 02001-00 1
Sea sand, purified 1000 g 30220-67 1
Stand tube 02060-00 1
Screened cable, BNC, l 750 mm 07542-11 1
Adapter, BNC socket/4 mm plug pair 07542-27 1
Boss head 02043-00 1
Support rod, stainless steel, l = 250 mm, d = 10 mm 02031-00 1
Connecting cord, 32 A, 500 mm, red 07361-01 1
Connecting cord, 32 A, 500 mm, blue 07361-04 1

Literature for this article als follows

Title Product Language
TESS expert Handbook Laboratory Experiments Physics 16502-32 ENG

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Product No: P2150515

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