Pendulum Waves

Pendulum Wave Demonstration (2:57)

What 10 Pendulums Look Like with Zero Friction

RELAX and ZONE OUT with this Pendulum Wave (3:00:03)

A Lissajous pattern is a pendulum motion extended from 1 dimension (1D) to 2 dimensions (2D).

Sand Pendulums – Lissajous patterns – Bruce Yeany (9:51) has a page about building a Lissajous pendulum swing. The swing is shown in action in the video below.

Lissajous pendulum graphing swing – Matthias Wandel (4:48)