a = 6
t = 6
δ = 90°
B = 6
b = 6
Lissajous curves are graphic patterns that can be obtained through the parametric equations:
x(t) = A sin(at+δ), y(t) = B sin(bt)
The curves describe harmonic vibrations. They were first discovered by Nathaniel Bowditch and later investigated by Jules Antoine Lissajous.