We discussed how electromagnetic waves are produced by a moving electric charge producing a magnetic field, and a moving magnetic field producing an electric field. The structure of the EM wave was seen by image, with the electric, magnetic, and direction all perpendicular to each other. The wave formula was shown to exist for these waves as well as sound and light, and the speed shown to always be equal to the speed of light. The term dielectric was discussed and the dielectric constant explained and given for a few common substances. The velocity of the EM wave through differing conductors was determined by the formula V=speed of light/square root of the dielectric constant. A few problems from the text were solved.