[PD] Cymatics/Chladni figures simulation

[padawan12]

Maybe this helps. ElectricPete offers a shortcut to
the first two modes of a rectangular plate in terms
of density, elasticity and two material constants.

http://www.eng-tips.com/viewthread.cfm?qid=150916&page=12

On Wed, 28 Mar 2007 10:12:32 -0500
"Charles Henry" <czhenry at gmail.com> wrote:

> > Robin -> 1st order differential equation (specifies a constant phase
> > difference between incoming/reflected waves)
> 
> for accuracy sake.... the phase difference is dependent on frequency
> (it works like an impedance)
> 
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