### Electromagnetic waves - University of Tennessee

2019-7-29 · E(x,t) = E max cos(kx - ωt + φ), B(x,t) = B max cos(kx - ωt + φ).. E is the electric field vector, and B is the magnetic field vector of the EM wave. For electromagnetic waves E and B are always perpendicular to each other and perpendicular to the direction of propagation. The direction of propagation is the direction of E x B.. If, for a wave traveling in the x-direction E = Ej, then B ...

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