Logarithmic spiral

A logarithmic spiral is a self-similar spiral curve that often appears in nature. It is also known as an equiangular spiral or growth spiral. Albrecht Dürer first described it in 1525, later followed by discussion by Descartes and extensive investigation by Jacob Bernoulli, who called it Spira mirabilis. Unlike an Archimedean spiral, the distances between its turnings increase in geometric progression.

Also called

Equiangular spiral; growth spiral

First described by

Albrecht Dürer (1525)

Turning distances

Increase in a geometric progression