Tag Archives: spiral

Fibonacci Sequence

In 1202 Leonardo Fibonacchi published a book called the Liber Abaci (Abacus Book or Book of Calculations) which proposed using Arabic numerals instead of Roman numerals and mentioned a sequence which he did not discover, but brought to European knowledge, now known as the Fibonacchi Sequence 0+1=1, 1+1=2, 2+1=3, 2+3=5, 3+5=8, 5+8=13, etc. If you stack the numbers correctly, they look like fibanocchi

This is not just an abstract mathematical construct, it is found all over nature, the most obvious being the snail shell or the chambered nautiluschambered nautilus

I suspect that it is probably a direct result of cell division in a confined space, but it is still amazing and mystical, and we humans in our desire to find patterns in everything, can find this one fascinating. Note that there are 13 notes (include the sharps and flats not just the whole notes) in a musical scale, flower petals usually come in 3,5 or 8…pine cones and tree branches and storm clouds and nebula and sunflowers…

macro-sunflower

If you count any given spiral in the sunflower it will probably be a number in the fibonacchi sequence. Biology begats math and physics or is it the other way around? And I’m thinking there’s a spiritual element to this too, but maybe I’m thinking too hard.

I give credit to Wikipedia for information about Fibonacchi and of course my friends at Spiral Ridge who taught me about this…http://www.spiralridge.com. Go to their next permaculture course, you will be glad you did.

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