Chladni Plate Diy / 3B Scientific U56006 Chladni Plate, Square | eBay / Chladni figures were discovered in the 19th century by the german physicist ernst chladni, who used a bow to generate a wave on a copper plate covered with sand.

Chladni Plate Diy / 3B Scientific U56006 Chladni Plate, Square | eBay / Ch…