Wallis's conical edge

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Figure 1. Wallis's Conical Edge with a=b=c=1
Figure 2. Wallis's Conical Edge with a=1.01,b=c=1

Wallis's conical edge is a ruled surface given by the parametric equations:

where a, b and c are constants.

Wallis's conical edge is also a kind of right conoid.

Figure 2 shows that the Wallis's conical edge is generated by a moving line.

Wallis's conical edge is named after the English mathematician John Wallis, who was one of the first to use Cartesian methods to study conic sections.[1]

See also[edit]

External links[edit]


A. Gray, E. Abbena, S. Salamon, Modern differential geometry of curves and surfaces with Mathematica, 3rd ed. Boca Raton, FL:CRC Press, 2006. [2] (ISBN 978-1-58488-448-4)