Electromagnetic waves contain both electric and magnetic fields that change or oscillate. The electric field vector E is always perpendicular to the magnetic field vector B. Both E and B are perpendicular to the propagation direction of the wave. We will learn more about the electric field vector E in the section on polarization of light.
Analytical Methods in Geosciences by Elizabeth Johnson and Juhong Christie Liu is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License, except where otherwise noted.