On Fri, 04 Feb 2005 00:54:26 GMT, John Schutkeker
wrote:

I'm designing a system for shattering wine glasses with high intensity
sound, but my design doesn't "feel" right to me, and I need somebody to
tell me if I've forgotten something important. I need an oscilloscope to
measure the resonant frequency of the glass and a frequency generator to
produce it. I need stereo speakers and a stereo amplifier powerful enough
to generate the sound to break the glass.


Why do you need to know the numbers? Why does the amp/speakers need
to be stereo?

Set up your generator and sweep the frequency until the glass "rings"
and shatters. If it's going to - I think your main problem will be
finding suitable glasses.

If you want an idea what sort of frequency to start at, make the glass
"sing" by rubbing the rim. Use your ears to match the generator
frequency. Try simple multiples of that frequency too.