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Why do wine glasses emit static noise?
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April 3rd, 2013
Yesterday, while I was holding by ear close to a wine glass (specifically the interior of the glass), I noticed that they produced sound. The noise sounded like static, was only apparent when I practically put my ear inside of the glass, and appeared to increase in volume when my TV was on.
What causes this mysterious sound? Was it Helmholtz resonance?
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