Fibonacci Spiral - Golden Spiral Logarithmic spiral whose growth factor is φ, the golden ratio - gets wider (or further from its origin) by a factor of φ for every quarter turn it makes.
Repeating the Fibonacci sequence once shows how a spiral is formed. Repeating it several times begins to show how the intricate patterns are created.
°The Golden Ratio: a designer's guide. The Golden Ratio is a beautifully simple piece of mathematical theory that can help make your designs feel well proportioned & pleasing on the eye.
How to Draw the Golden Spiral: 11 steps (with pictures) - wikiHow: using the elements of the Fibonacci sequence.
The Meaning of the Calla Flower thumbnail