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Project Noah Nature School
spotted in a local private garden
i forgot arlanda mission :)
thanks for remind it to me this kind of structure is awesome Emma,realy :)
Mathematical model of floret arrangement
Illustration of Vogel's model for n=1 ... 500
A model for the pattern of florets in the head of a sunflower was proposed by H. Vogel in 1979.[20] This is expressed in polar coordinates
where θ is the angle, r is the radius or distance from the center, and n is the index number of the floret and c is a constant scaling factor. It is a form of Fermat's spiral. The angle 137.5° is related to the golden ratio (55/144 of a circular angle, where 55 and 144 are Fibonacci numbers) and gives a close packing of florets. This model has been used to produce computer graphics representations of sunflowers
Good one for Mathematics in nature.
Spotted on Aug 1, 2012
Submitted on Sep 10, 2012
