Recent content by mgd2009

thanks invisigo for your reply you say that ((I don't know if this is true) an electric current fills the metal with a bunch of electrons in the high energy conduction band, then when the current is reversed, the electrons fall into the valence band emitting a bunch of radiation)) i think...

welcome every body i have question about the photons generation? i know that there are two ways to generate what so called photon 1-- the first is by atomic transition and i study this way a lot 2-- the second by electrons oscillation due to ac current like in antnna My question is why...