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Nobody invented the radio wave. It was a matter of discovering something that had existed long before man came on the scene. The first step in the discovery of radio waves was taken by the Scotsman Clerk Maxwell in 1873. He made a great theoretical advance in the theory of electricity and magnetism, encapsulating all that was then known in a series of equations. Maxwell's equations contained more than Maxwell knew when he formulated them. A careful study showed that they predicted the existence of electromagnetic waves and that these waves would travel at the speed of light. He was correct; they did exist and light was one type of them. Radio waves were another. Radio waves were first produced and identified by the German physicist Heinrich Herz in 1885, at a frequency of about 75 MHz. They were first used for communication by the Italian Guglielmo Marconi around 1900.

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How was radio wave discovered?

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