The Fascinating FIBONACCI NUMBERS Fibonacci 1170— 1240

Fibonacci sequence is a sequence of numbers where each number is obtained from the sum of the previous two series. Thus, the first 10 numbers of the Fibonacci sequence are:
1, 1, 2, 3, 5, 8, 13, 21, 34, 55, ...

Plants have no way to know the Fibonacci numbers, but they develop in the most effective way. Thus, many plants have leaves arranged in a Fibonacci sequence layout around the stems – the sunflower, f.e..
The reason for this is to achieve an optimum, the maximum efficiency. Thus for example, following the Fibonacci sequence, the leaves of plants can be arranged to occupy a small space and obtain much sun.

How many of you haven't studied a little the snail shell gone out "to walk" after a summer rain? . Its design follows a highly successful spiral, a spiral that we would find it rather hard to achieve by drawing it with pen. Being studied more thoroughly, it was concluded that this spiral follows the dimensions given by the Fibonacci sequence:
• the positive axis: 1, 2, 5, 13, and so on ...

http://www.youtube.com/watch?v=oZQoaI-K3ro