from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Describes a travelling wave whose amplitude is constricted; e.g. a wave in shallow water.


The term cnoidal was coined by Korteweg and de Vries in their paper in Philosophical Magazine (1895, series 5, vol 39, pp 422-443) to describe a class of solutions to the KdV equation which involve a Jacobi elliptic function. The Jacobi elliptic function involved is commonly written as , and the term cnoidal was designed to be analogous to sinusoidal, the word describing waves which involve the sine function. (Wiktionary)


  • Using this gadget you can make your own -- what else -- artificial waves: tsunamis, underwater explosions, anti-waves, cnoidal waves, and waves that can overturn hundred million dollar yachts.

    Archive 2007-06-01


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