Spiral Shell's Page (under construction)

A spiral is a curve in the plane or in the space, which runs around a centre

The spiral is the most widespread shape in nature.

When left alone, energy tends to move, grow and balance as spirals

They form the Fibonacci Spiral. The Fibonacci spiral is called after its numbers. If you take the length of the square sides in the order, you get the sequence 1,1,2,3,5,8,13,21, ... These are the Fibonacci numbers, which you can find by the recursive formula a(n)=a(n-1)+a(n-2) with [a(1)=1, a(2)=1, n>2].