Bobbie Kalman

What is symmetry in nature? - Looking at Nature Bobbie Kalman

Mathematicians say that symmetry has to be identical parts, but nature is never truly identical. However, it is far more interesting than geometric shapes! This book shows how a person with arms outstretched has fivefold symmetry like a sea star, and if you drew a circle around his or her body in that position, the navel would be at its centre.