Lissajous figure

[lee-suh-zhoo, lee-suh-zhoo]

Lis·sa·jous fig·ure

[lee-suh-zhoo, lee-suh-zhoo]
noun Physics.
the series of plane curves traced by an object executing two mutually perpendicular harmonic motions.

Origin:
1875–80; named after Jules A. Lissajous (1822–80), French physicist
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Lissajous figure is always a great word to know.
So is cycle. Does it mean:
a sequence of changing states that produces a final state identical to the original one; one of a succession of periodically recurring events
the analogous motion of the particles of a mass of air or the like, whose state of equilibrium has been disturbed, as in transmitting sound
Collins
World English Dictionary
Lissajous figure (ˈliːsəˌʒuː, ˌliːsəˈʒuː)
 
n
a curve traced out by a point that undergoes two simple harmonic motions in mutually perpendicular directions. The shape of these curves is characteristic of the relative phases and frequencies of the motion; they are used to determine the frequencies and phases of alternating voltages
 
[C19: named after Jules A. Lissajous (1822--80), French physicist]

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