## The Fibonacci sequence

Starting with 0 and 1, the sequence goes 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, and so forth. Written as a rule, the expression is xn = xn1 + xn2. Named after Fibonacci, also known asLeonardo of Pisa or Leonardo Pisano, Fibonacci numbers were first introduced in his Liber abaci in 1202.

The Fibonacci numbers are Nature’s numbering system. They appear everywhere in Nature, from the leaf arrangement in plants, to the pattern of the floets of a flower, the bracts of a pinecone, or the scales of a pineapple.

Mona Lisa

How exactly did Leonardo da Vinci go about utilizing the Golden Spiral? First, he uses it to frame the woman in the painting. The spiral begins at her left wrist then travels to the background of the image, which contrasts the beauty of her face. It then skims over her forehead and continues turning until it kisses her chin. It rises, going past the slight of her dimple. Lastly, it completes one rotation which ends at the tip of her nose.

When making eye contact with someone, the ideal place to look is actually their nose, as it centers the face. And with the Mona Lisa, once ease your focus, you immediately notice the eyes. Her most remarkable feature that follows you everywhere you go…

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