The variable used in Elliptic Functions and Elliptic Integrals, which can be defined by

where is a Jacobi Elliptic Function. The term ``amplitude'' is also used to refer to the maximum offset of a function from its baseline level.

**References**

Abramowitz, M. and Stegun, C. A. (Eds.).
*Handbook of Mathematical Functions with Formulas, Graphs, and Mathematical Tables, 9th printing.*
New York: Dover, p. 590, 1972.

Fischer, G. (Ed.). Plate 132 in
*Mathematische Modelle/Mathematical Models, Bildband/Photograph Volume.*
Braunschweig, Germany: Vieweg, p. 129, 1986.

© 1996-9

1999-05-25