Lissajous Curves

Cartesian equation: x = a sin(nt+c), y = b sin(t)

Click below to see one of the Associated curves.

Definitions of the Associated curves

Evolute       Involute 1       Involute 2

 Inverse curve wrt origin      Inverse wrt another circle

Pedal curve wrt origin      Pedal wrt another point

Negative pedal curve wrt origin      Negative pedal wrt another point

   Caustic wrt horizontal rays      Caustic curve wrt another point

curves or Lissajous figures are sometimes called Bowditch curves after Nathaniel Bowditch who considered them in 1815. They were studied in more detail (independently) by Jules-Antoine Lissajous in 1857.

Lissajous curves have applications in physics, astronomy and other sciences.

Nathaniel Bowditch (1809-1880) was an American. He learnt Latin to study Newton's Principia and later other languages to study mathematics in these languages. His New American Practical Navigator (1802) and his translation of Laplace's Mécanique céleste gave him an international reputation.


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JOC/EFR February 1996