Free State

The term you looking for is either the golden section or the divine proportion also related is the Fibonacci series which was discovered in a thought experiment concerning the propagation of breeding rabbit pairs. The basic idea of the golden section is that the proportions of the whole regress through the proportions of the parts. Given a line segment AC with a point B between points A and C, and segment AB is a greater length than BC. The golden section is when, AC / AB = AB / BC = 1.618. The golden section has been observed through the magnitudes of the organization of the galaxy to the molecule. An interesting book for the general reader is "A Beginner's Guide to Designing the Universe" by Michael Schneider. Consume with a grain of salt.