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23 Aug 2016: New preprint: Phyllotaxis, disk packing and Fibonacci numbers.

Phyllotaxis, disk packing and Fibonacci numbers

A Mughal and D Weaire

We consider the evolution of the packing of disks (representing the position of buds) that are introduced at the top of a surface which has the form of a growing stem. They migrate downwards, while conforming to three principles, applied locally: dense packing, homogeneity and continuity. We show that spiral structures characterised by the widely observed Fibonacci sequence (1,1,2,3,5,8,13...), as well as related structures, occur naturally under such rules. Typical results are presented in a animation.

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© Adil Mughal 2012