http://youtu.be/ex15VJr7U54
A talk by Shannon Bourke at the Eastern Michigan University Undergraduate Symposium, March 25, 2011.
When a thin metal plate with a small amount of sand on it is made to vibrate, aesthetically pleasing patterns form. These symmetric patterns are called Chladni Patterns. Students taking PHY 101 at Eastern Michigan University create these patterns by pulling a violin bow across the edge of a plate, or by using a mechanical oscillator to drive the center of a plate. These two methods only allow a small subset of all possible points on the plate to be excited. I designed and built an electronic device that allows its user to excite the plate at any point. I will present patterns created with the electronic device and other methods, and describe theoretical models of pattern formation.
Advised by Prof. Behringer
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