Back حلزون لوغاريتمي Arabic Логаритмична спирала Bulgarian Logaritamska spirala BS Espiral logarítmica Catalan لوولپێچی لۆگاریتمی CKB Logaritmická spirála Czech Логарифмла спираль CV Sbiral logarithmig Welsh Logarithmische Spirale German Logarithmic spiral English

Logarithmic spiral

Logarithmic spiral (pitch 10°)
Cutaway of a nautilus shell showing the chambers arranged in an approximately logarithmic spiral
A low pressure area over Iceland shows an approximately logarithmic spiral pattern.
The arms of spiral galaxies often have the shape of a logarithmic spiral, here the Whirlpool Galaxy.

A logarithmic spiral, equiangular spiral or growth spiral is a special kind of spiral curve which often appears in nature. The logarithmic spiral was first described by Descartes and later extensively investigated by Jakob Bernoulli, who called it Spira mirabilis, "the marvelous spiral".

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