A bicycle wheel acts like a giant gyroscope.

Two cylinders that look the same may roll downhill at different rates.

Speed up your spin.

Blowing air through a disk full of holes makes a tone.

Make a jumpy mechanical pet that takes itself for a walk.

Create graceful loops and spirals by drawing on a spinning disk.

Make a stationary triangle appear on a spinning wheel.

See what properties control the rotation of an object.

Rotating water has a curved surface.

Short bursts of moving images produce some interesting effects.