Lissajous curve (Lissajous figure) Named after Jules Antoine Lissajous (1822–80), a Lissajous curve is a planar curve that can be parameterized as
Lissajous curve
The curve is closed if and only if ω1/ω2 is rational.
A Lissajous curve
In the figure A1 = ω2 = 2, A2 = ω1 = 3, ε = π/6.
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