A pendulum is an object that is attached to a pivot point so it can swing freely. This object is subject to a restoring force that will accelerate it toward an equilibrium position. When the pendulum is displaced from its place of rest, the restoring...

Circular motion

Simple harmonic motion

A harmonograph is a mechanical apparatus that employs pendulums to create a geometric image. The drawings created typically are Lissajous curves, or related drawings of greater complexity. The devices, which began to appear in the mid-19th century and...

Complex harmonic motion

The motion of a Harmonic oscillator (in mathematics), which can be:

Kepler's laws of planetary motion (in physics, known as the harmonic law)

Musica universalis (in medieval astronomy, the music of the spheres)

Chord progression (in music, harmonic progression)