anharmonic

American  

[an-hahr-mon-ik] / ˌæn hɑrˈmɒn ɪk /

adjective

Physics.

1. of or relating to an oscillating system that is not undergoing simple harmonic motion.

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anharmonic British  

/ ˌænhɑːˈmɒnɪk /

adjective

1. physics of or concerned with an oscillation whose frequency is not an integral factor or multiple of the base frequency

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Etymology

Origin of anharmonic

an- ¹ + harmonic; modeled on French anharmonique

Example Sentences

The anharmonic ratio of four points is such an invariant, since it remains unaltered under all projective transformations.

From An Elementary Course in Synthetic Projective Geometry by Lehmer, Derrick Norman

The locus of points from which four points in a plane are seen along four rays of constant anharmonic ratio is a conic through the four points.

From An Elementary Course in Synthetic Projective Geometry by Lehmer, Derrick Norman

The anharmonic ratio of the lines joining any four fixed points on a conic to a variable fifthpoint on the conic is constant.

From An Elementary Course in Synthetic Projective Geometry by Lehmer, Derrick Norman

These were found in the anharmonic ratio, a device leading to the liberation of synthetic geometry from metrical relations, and in involution, which yielded rigorous definitions of imaginaries.

From Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 6 "Geodesy" to "Geometry" by Various

On any convenient line through A take two points B' and D' such that AB'/AD' is equal to the given anharmonic ratio.

From An Elementary Course in Synthetic Projective Geometry by Lehmer, Derrick Norman