Soundwave painting

Scientist Chladni invented a method that proved for the first time that sound is generated by vibration and propagated through waves. In the Chladni experiment, when a thin plate covered with a layer of sand is subjected to acoustic vibration, the plate vibrates in a complex manner, with different intensities of vibration in each part, thereby affecting the direction of the sand in the vibration area after shaking. Small sand particles will automatically gather in the areas where the metal plate vibrates the smoothest, presenting various shapes.

The unit is designed for unsupervised public use: controls are recessed or shielded, moving parts are enclosed, and the interface is operable by a child of about six with no instruction. Where a screen is used, the language can be switched without changing the hardware, and the content can be replaced on site.