IEEE - James Clerk Maxwell first predicted that radio waves existed in the 1860s. His theory is called “Maxwell's Equations” and described radio and light waves to be electromagnetic waves that were
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Wave Propagation: The Propagation of Radio Waves. The Theory of Radio Waves of Low Power in the Ionosphere and Magnetosphere. K. G. Budden. Cambridge University Press, New York, 1985. xvi, 669 pp.,
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