i once read a book which says that EMF wave are form due to changing of current which result in electric fields and result in changing magnetic field and repeated in infinite loop :rofl: i also heard that visible light (which is also a EMF radiation) is produced due to the changing orbit of electron which result in releasing photon. at school, they taught me that when there is a decay, gamma ray is produced. and gamma rays is also a rays of photon. and i also hear much more of producing photon or EMF wave. btw: i dont know wether the correct spelling is photon or foton. thx.