Chladni Plate

Shows vibration patterns on an aluminum plate.

1) Place chladni plate on top of garbage bag (less cleanup).
2) Connect function generator directly to inputs of the chladni plate.
3) Sprinkle sand (lightly) on plate.
4) Set function generator to square wave.
5) Patterns can be observed from 100Hz and up.
Example frequencies: 280Hz, 750Hz, 1440Hz, 2150Hz

There is also a number of large chladni plates (circle, violin, oval, square).
These can be set to vibrate manually using gut string on hacksaw (needs rosin!) or better, driven with large speakers from the knots experiment in the upper year labs.

Violin plate shaker frequencies:
39.4Hz
64.3Hz
81.6Hz
109.8Hz
122.3Hz
141.5Hz
411Hz
500.9Hz
555.7Hz
623Hz