Some sections of this book rely on the reader's familiarity with various aspects of EM field theory. This appendix briefly reviews wave propagation, the idea of a complex refraction index, the Poynting vector, and the diffraction limit. The concepts introduced here are reviewed only - not fully developed. Maxwell's equations are used as the starting point. SI units (meter, kilogram, second, ampere) are used throughout.
Appendix A Review of Electromagnetic Wave Propagation