s is for spiral
I suppose that many artists have a design element of choice. Mine happens to be the spiral. For some reason, I am just automatically drawn to the swirly little circles. I've been known to doodle them on the edges of notebook pages, use them as patterns for mail art envelopes, and even envision my spiraly little creations on yards and yards of beautiful fabrics. So, even though I'm not quite sure how or why the spiral has come to have such a special place in my heart, it remains there nonetheless.
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There is a number sequence known as the Fibonacci sequence. First postulated by the medieval mathematician Leonardo Fibonacci, this sequence was used to describe the growth patterns of plants.
It goes:
1,1,2,3,5,8,13,21,34,55,89,144,233, etc.
It is made by adding the last two numbers of the sequence to get the next one, as in:
1+1=2, 1+2=3, 2+3=5, 3+5=8, 5+8=13, etc.
You divide one term of the sequence into the next one:
1/1=1 2\1=2 3\2=1.5 5\3=1.66 13/8=1.625
The sequence can be graphed out in the form of a spiral, called the Fibonacci Spiral.
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The Nautilus Shell is a great illustration of this sequence.