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In general, a spiral is a curve with
equal to a constant for all
, where
is the
Torsion and
is the Curvature.
See also Archimedes' Spiral, Circle Involute, Conical Spiral, Cornu Spiral, Cotes' Spiral, Daisy, Epispiral, Fermat's Spiral, Hyperbolic Spiral, Logarithmic Spiral, Mice Problem, Nielsen's Spiral, Phyllotaxis, Poinsot's Spirals, Polygonal Spiral, Spherical Spiral
References
Eppstein, D. ``Spirals.''
http://www.ics.uci.edu/~eppstein/junkyard/spiral.html.
Lauwerier, H. Fractals: Endlessly Repeated Geometric Figures. Princeton, NJ: Princeton University Press,
pp. 54-66, 1991.
Lockwood, E. H. ``Spirals.'' Ch. 22 in A Book of Curves. Cambridge, England: Cambridge University Press,
pp. 172-175, 1967.
Yates, R. C. ``Spirals.'' A Handbook on Curves and Their Properties. Ann Arbor, MI: J. W. Edwards, pp. 206-216, 1952.
Spirals