This video is a cymatics demonstration using a Chladni plate. 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.
Video from Jun 6, 2013
Amazing Resonance Experiment! – YouTube
See also: Unedited version with tone throughout entire video: http://www.youtube.com/watch?v=1yaqUI…