Radiation

Abstract

In some of the preceding chapters we have considered the structure and transport of waves without speaking directly to the origin of those waves. That the origin of the waves is ultimately in the charges and their motion was, perhaps, evident in our treatment of the electromagnetic energy, as well as in the form of the wave equations for the electric and magnetic fields in the presence of ρ and $\vec{J}$. But we have not yet considered the details of the process of the emission of electromagnetic energy by moving charges. This will be the subject of the present chapter.