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From the Cabinet of Physics: Chladni Sees Sound with Sand — 1 Comment

  1. Very cool. I have a set of metal plates in the physics lab at my college. We do not use a bow to drive them, but rather an electro-mechanical shaker and a frequency generator. This lets me run up and down through the frequencies, producing various patterns on the plates as they hit various vibration modes. Some students find this almost magical. As is the case with so many of these “Cabinet of Physics” videos, I sort of like the old approach — with the bow — better. It’s just a little more connected to normal life, and just a little less magic. After all, most folks are familiar with stringed instruments being driven by a bow.

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