Apparatus consisting of a suspended metal plate covered in a light dusting of fine sand or powder, then vibrated by either a bow or a voice coil (speaker). Beautiful, consistent nodal patterns known as Chladni figures emerge based on the specific resonance characteristics of the plate and the frequency of vibration inducued in it. Different sizes, shapes, and thicknesses of plates create different patterns, as do different frequencies, vibration methods, and audio samples.
Examples of Chladni figures:
Articles:
- Chladni figures on Wikipedia
DIY projects:
- Easy Chladni Plate by Aron Hoekstra
- Building a Chladni Plate by Mario Cruz (MarioTheMaker)
- How to sculpt sound into Chladni figures by Nicolas Barrial
- Chladni Plate by Edwin Wise
Products:
Due to its popularity as a demonstration aid in science classrooms, good-quaity Chladni plate's are available from multiple dealers including:
Videos:
- Weekend Projects: Visualizing Sound with a Chladni Plate by Make
- Singing plates - Standing Waves on Chladni plates by Diana Cowern (Physics Girl)
- Chladni Figures - random couscous snaps into beautiful patterns by Steve Mould
- Resonance Experiment! (Full Version - With Tones) by brusspup
- Moving Particles with Vibration, Making the Chladni Plate by Mehdi Sadaghdar (ElectroBOOM)