Phi 1.61803

I am interested in Phi or 'the golden ratio' not for aesthetics but for its functional properties.

Here I am experimenting with the golden ratio and also the Fibonachi sequence (an additive sequence where the next number is the sum of the previous two, ie. 1,1,2,3,5,8...) which approaches the golden ratio.

image thanks to http://en.wikipedia.org/wiki/File:FibonacciBlocks.svg