An oscillator is a device that generates vibration. Vibration radiates to its surroundingsas a wave. Van Twist visualizesin 2-D as black-and-white beams. Rotating spokes of a big wheel with the oscillator in the middle.

Waves emanating from two oscillators in each other’s neighbourhoodinterfere. Bizarre, ever-changing patterns come up that change when visitors change the position of the oscillators with the joystick.