Mondo Knows Facts
Sand on a plate draws patterns at certain frequencies
Called Chladni figures, the grains gather along still lines as the plate vibrates Ernst Chladni demonstrated them around 1787 by bowing metal plates covered in sand. The shapes map the nodal lines where motion is minimal. The technique is still used to study how instrument plates resonate. It sits in Mondo's music collection, one of 200 facts that each trace back to the reference below.
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Facts that can change over time are reviewed and updated. If something here looks wrong, Mondo would rather know than be confidently incorrect.
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Tags: acoustics, experiments, physics
Sand on a plate draws patterns at certain frequencies: the short answers
- Where does this come from, and can I check it?
- Called Chladni figures, the grains gather along still lines as the plate vibrates. The figure is taken from Britannica, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
- Is this really a music fact?
- Yes. It sits on the Music shelf, one of 2,600 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
- What else can I read about it?
- The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.