To see the universe from an atom. In order to understand the mechanism of light, we must first understand the structure of the atom.

This video demonstrated a 2 D structure of a hydrogen atom. The center magnet is proton, the small magnets are enertrons, the electron is locked in a circle around proton. (see detail atomic structure at Tuesday, December 12, 2017 blog)

Electrons are constantly vibrating on the plane perpendicular to the radius of the atom due to the existence of energy/emf.

If emf is bigger than the binding force, electrons will escape from the atom.

Since all lines of sight electrons are connected by the force F=Ke x e1e2/rr, they share their emf instantly according to distance.

This is the mechanism of light/quanta/radiant energy/em wave/photon.