We start with a little math. The Fibonacci sequence, which has an uncanny knack for appearing in nature, is a sequence of numbers, each of which is generated by adding the two before: 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89 and so on.
As these numbers march toward infinity, they show an interesting property: Dividing one of them by the one before comes closer and closer to a single value, about 1.618. The exact value, a number named (the Greek letter phi), is known as the golden mean. This number can be used to create a rectangle of enduring fascination to artists. This golden rectangle (opposite) replicates the Fibonacci relationship: a + b is to a as a is to b. The majesty of this rectangle…