https://tube.blueben.net/videos/watch/85a08e5e-049e-4ea0-9c82-2019f2c59547 Sound Has Shapes Place sand on a metal plate and vibrate it at a precise frequency, and the grains don't scatter randomly — they move toward the exact points where the plate stays still. Those still points are called nodes. Everywhere else, the plate is shaking too hard for sand to stay, so grain by grain, it gets pushed away until only the nodes are left covered. Change the frequency, and the pattern of stillness changes with it — new nodes, new shape. Each of the ten patterns in this video is a real, calculated resonance of the plate. This is physics, drawn in sand. Wed, 16 Sep 2026 15:46:46 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://tube.blueben.net https://tube.blueben.net/client/assets/images/icons/icon-96x96.png https://tube.blueben.net/videos/watch/85a08e5e-049e-4ea0-9c82-2019f2c59547 All rights reserved, unless otherwise specified in the terms specified at https://tube.blueben.net/about and potential licenses granted by each content's rightholder.