thanks so much for the reply, so what you mean photon
thx so much for the reply, what u mean photon is just a kind of energy exchanged within atoms and electricmagnetic field, so what i can day photons either located in electricmagnetic field or atoms ,is that correct?
we know that when a electron lost its energy , it will emit photon , but why electron have a photon inside ? does it already exit in a electron from the beginning or it comes from environment ? if comes from environment , where does photon come from?