Harmonic motion

Harmonic motion can mean:

the displacement of the particle executing oscillatory motion that can be expressed in terms of sine or cosine functions known as harmonic motion .

• The motion of a Harmonic oscillator (in physics), which can be:
• Simple harmonic motion
• Complex harmonic motion
• Keplers laws of planetary motion (in physics, known as the harmonic law)
• Quasi-harmonic motion
• Musica universalis (in medieval astronomy, the music of the spheres)
• Chord progression (in music, harmonic progression)