Nível de ensino

Families

Area of Interest

Acoustics | Physics

Keywords

bells | explore | physics | sound | vibration | waves

Duration

4 min

Typology

Video

A Chladni plate consists of a flat sheet of metal, usually circular or square, mounted on a central stalk to a sturdy base. When the plate is oscillating in a particular mode of vibration, the nodes and antinodes that are set up form complex but symmetrical patterns over its surface. The positions of these nodes and antinodes can be seen by sprinkling sand upon the plates; the sand will vibrate away from the antinodes and gather at the nodes.

This video is from Harvard Natural Sciences Lecture Demonstrations. To access the original activity or to find out more about it, you can do so at Chladni Plates.

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