The problem is,if all types of matter have an antiparticle, the antiparticle of a photon must have some property that is separate from a regular photon. Neutrons have antineutrons, so why not have a counter particle of an antiphoton.
Originally posted by Dr X
A photon forms the structure of the electron and the positron, the only difference between them is the direction the photon is travelling.
so the photon is the key to the difference between matter and antimatter.
when a positron meets and electron the two constituent photons are released.
Originally posted by slank
Can you have mass without matter, or matter without mass?
Originally posted by daniel_g
(energy is not negative in antiparticles - is why you assumed antilight moved back in time?)