The first step to visualise acoustics! At special frequencies, standing waves appear on the plate, driving the sand away from the points of large vibration (anti-nodes) to points of no vibrations (nodes). Unique patterns are formed at different resonance frequencies becoming increasingly complex and beautiful as the rate of oscillation increases. This is one of the classic cymatics demonstrations that has been performed in some fashion for centuries.

Chladni plate and vibration generator and sand included.

Signal generator required (not included).  Signal generator 3753101 is recommended.