Conchospiral

An example

In mathematics, a conchospiral is a three-dimensional spiral. In cylindrical coordinates, it is described by the parametric equations:

$r=\mu^t a$

$\theta=t$

$z=\mu^t c.$

The projection of a conchospiral on the (r, θ)-plane is a logarithmic spiral.

External links

• Weisstein, Eric W., "Concho-Spiral", MathWorld.