Sound Resonance converted to light

LARRY SULLIVAN ( polymercanada@bc.sympatico.ca )
Fri, 02 Apr 1999 19:02:21 -0800

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http://thoth.stetson.edu/students/stickney/senrsch.htm

I thought this experiment may be usefull for some to consider,

Larry

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Peter G. Stickney's SENIOR RESEARCH

SENIOR RESEARCH IN
SONOLUMINESCENCE
What is sonoluminescence?
Sonoluminescence is a process during which a small bubble of air, trapped withina glass vessel, begins to emit light. The bubble of air is levitated at the centerof the vessel by a standing sound wave. This sound wave is produced by a pair of piezoelectric transducers which are affixed to the sides of the vessel. The water in the vessel is "degassed" through a separate process. Thecomposition of the gases which are dissolved in the waterplays a role in the color and intensity of the light emmitted.

The Experimental SetUp


Experimental Set-Up
This is the experimental set-up used in my experiments. The piezoelectric transducers are supplied as a package from Channel Industries for $95.00. Using a simple function generator to create a sound wave, an ordinary audio amplifier to create the 110dB sound pressures and a digital oscilloscope to monitor the sound field, you canreplicate this experiment.

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