Further informationson the exhibit "Chladnian Slices"
Running the bow causes the plate to vibrate and the sand begins to dance. It moves from the strongly vibrating areas (vibrating bellies) to the resting zones (vibrating nodes), forming organic patterns.
Each frequency has its own figure, and the higher the tone, the more complicated the sound.
The symmetrical sand figures were first demonstrated by the German physicist Ernst Chladni in 1802.