Any of a number of characteristic looped or curved figures traced out by a point undergoing two independent simple harmonic motions at right angles with frequencies in a simple ratio.
- He obtained Lissajous figures by successively reflecting light from mirrors on two tuning forks vibrating at right angles.
- The hare is constrained to hop along the path of a Lissajous figure.
Late 19th century: named after Jules A. Lissajous (1822–80), French physicist.
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