geometrymatters:

Fibonacci Sculptures – Part II

These are 3-D printed sculptures designed to animate when spun under a
strobe light. The placement of the appendages is determined by the same
method nature uses in pinecones and sunflowers. The rotation speed is
synchronized to the strobe so that one flash occurs every time the
sculpture turns 137.5º—the golden angle. If you count the number of
spirals on any of these sculptures you will find that they are always
Fibonacci numbers.

© John Edmark