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Description: The speaker is tuned to the frequency of the glass using a microphone and an oscilloscope. The turn up the volume until the glass breaks. if you have extra time, show the glass on a monitor with a strobe light. Most people are surprised by how much the glass actually moves before it breaks.
Hazards: Shield will prevent glass from flying into the audience. It is possible, though unlikely, for some glass to fly towards the demonstrator. The demonstrator should wear safety glasses and ear protection. Students should place their fingers in their ears.
Parts: Stereo amplifier,
Atlas/Soundolier Model SD-370 horn driver.
Setup Time: 1 day
Quant. in Demo Room: 1
Source: Atlas Sound
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NCSU Physics Demonstrations
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