Harmonic (disambiguation)
# Harmonic (disambiguation)

Harmonic usually refers to the frequency components of a time-varying signal, such as a musical note.

## Mathematics, science and engineering

* Harmonic (mathematics), a number of concepts in mathematics
* Harmonic analysis, representing signals by superposition of basic waves
* Harmonic oscillator, a concept in classical mechanics
* Simple harmonic motion, a concept in classical mechanics
* Harmonic distortion, a measurement of signal distortion
* Harmonics (electrical power)
* Harmonic series (mathematics), a divergent infinite series
* Harmonic tremor, a rhythmic earthquake which may indicate volcanic activity

## Music

* String harmonic, a string instrument playing technique
* Artificial harmonic, a string instrument playing technique
* Enharmonic, a "spelling" issue in music
* Harmonic series (music), the series of overtones (or partials) present in a musical note, or the vibrational modes of a string or an air column
* Scale of harmonics, a musical scale based on harmonic nodes of a string
* The Harmonics, a rock a cappella group from Stanford University
* Harmony, the musical use of simultaneous pitches, or chords
* Inharmonicity, the degree of overtones' departure from integral multiples of the fundamental frequency
* Overtone, any resonant frequency higher than the fundamental frequency

## Other uses

* Harmonic (color), a relationship between three colors
* Harmonic Convergence, a New Age astrological term
* "Harmonics", the twelfth movement of Mike Oldfield's Tubular Bells 2003 album
* Harmonic Inc., a video infrastructure product company, headquartered in San Jose, California
