The problem addressed in the present chapter is the same problem as discussed in the
preceding one, namely, the determination of fields for given distributions of charge, current,
polarization and magnetization. Here, however, we will derive expressions for the scalar and
vector potentials as functions of space and time coordinates for the given source distributions,
which are also specified in space-time. Once the potentials are obtained, the electromagnetic
fields will be calculated by straightforward differentiation. The integrals will look very different
from those encountered in Chapter 4, but the final results will be exactly the same.
