Lissajous figure

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English[edit]

A Lissajous figure on an oscilloscope
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Etymology[edit]

After French mathematician Jules Antoine Lissajous, who invented an apparatus that projected such figures onto a wall.

Noun[edit]

Lissajous figure (plural Lissajous figures)

  1. (mathematics) A plane curve traced by a point which executes two perpendicular independent harmonic motions, the frequencies of which are in a simple ratio.

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