Characteristics of electromagnetic media

The following is a list of different characteristics of media with respect to the propagation of electromagnetic waves:

  • Linear
  • Isotropic : similar properties in any direction of travel for waves through that medium.
  • Homogenious: all properties (e.g. $\varepsilon_r$) is independent of position
  • Conductive: $\sigma > 0$
  • Source free: $\vec{J} = 0$

Combinations:

  • Simple: linear + homogenious + isotropic