Polygons and PolyhedraPlatonic Elements

Plato believed that all matter in the Universe consists of four elements: Air, Earth, Water and Fire. He thought that every element correspond to one of the Platonic solids, while the fifth one would represent the universe as a whole. Today we know that there are more than 100 different elements which consist of spherical atoms, not polyhedra.

Images from Johannes Kepler’s book “Harmonices Mundi” (1619)