Photon

A photon is a type of subatomic particle that is a unit of light energy, which focus on the retina of the eye, and from there, the information is transmitted to the brain, which allows humans and other animals the ability of sight.

Superman explained to Marvin White and Wendy Harris how photons worked by showing them a diagram of a house, showing how photons are what make it possible for us to see the house. He even tells them that he believes that the Raven has somehow developed antiphotons and mirror-type photons.

External Link

 * Photon at Wikipedia