Chladni patterns: Violin Plate

http://www.youtube.com/watch?v=ORNwlmRvpmc

Watch intricate patterns in a model of a violin (made out of white pinewood) using sound. This video is a DIY physics experiment. The frequencies shown are A5 (880 Hz) and F6# (1480 Hz).

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The Chaldni Device: Amazing Resonance Experiment!

http://www.youtube.com/watch?v=F3UEsZcmvTA

So this experiment is the Chladni plate experiment. I used a tone generator, a wave driver (speaker) and a metal plate attached to the speaker. First add sand to the plate then begin playing a tone. Certain frequencies vibrate the metal plate in such a way that it creates areas where there is no vibration. The sand "falls" into those areas, creating beautiful geometric patterns. As the frequency increases in pitch the patterns become more complex.

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