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RE: OT-fundamentals in sound (was singing bowls)
> This discussion made me think of what a bowl would sound like and
> what frequencies could be generated by making some sort of pneumatic
> device that would hold the bowl (small suction cup at the bottom?),
> and spin a dowel around the lip, and you could vary the speed of
> rotation, and the pressure applied to the bowl.
This is very much like the instrument that Benjamin Franklin
invented...the Glass Armonica.
There is a great picture of it here:
http://www.glassarmonica.com/
and a great sound file here:
http://www.crystalmusic.com/
Mike McGary