Spirals

Wikipedia: Spirals – Spirals and helices, 2D spirals, 3D spirals, In nature, As a symbol, and In art.

Mathematische Basteleien: Spirals – What is a spiral? and types of spiral.

Wolfram MathWorld: Logarithmic Spirals – Equation offered.

Phi: 1.618: The Golden Number: Spirals and the Golden Ration – Article: Fibonacci numbers and Phi are related to spiral growth in nature.

Discover Magazine: Article: Why Is Our Universe Filled With Spirals?

Original Beauty: Spirals In Nature – Site offers a photo gallery of spirals found in nature.

15 Uncanny Examples of the Golden Ration in Nature – Site offers pictures and information about spirals and the Golden Ratio.

Fibonacci in Nature – Site talks about Nature’s Numbering system and offers picture examples.