• Cave@lemmy.world
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    8 months ago

    This doesn’t mention anything about it working with any kind of large impact, though. It’s all about higher frequency vibrations from layers of sand moving around. It’s an interesting phenomenon, but jot what is being talked about.

    • JohnDClay
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      8 months ago

      The resonance depends on the size of the cavity. It’s conceivable that with different sand structure you could get different size resonating chambers. Plus even though a piano is tuned for higher frequency vibrations, it’ll still ring when you thump on it. I’d imagine that’d be the same with these chambers.