Invented by German scientist, Ernst Chladni, in the Chladni’s Plate Experiments is used to show that when a plate is vibrating at a frequency, sand grains sprinkled on the plate will move towards the regions on the plate with less vibration (nodal lines).

Chladni's Plates kit comprises a pair of square and round bronze plates, about 150mm diameter, mounted centrally to a clamp that can fix the discs to a bench so they are rigid but can freely vibrate when agitated with a violin bow.
A small amount of special sand is placed on the plate, the plate is lightly touched with the finger and a certain point and the resin coated bow is passed across the edge of the plate so it vibrates at its natural frequency. The sand collects on the plate in the form of complex patterns.

Genuine IEC product. Click here for instruction sheet.