Radio Essay

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In the 1860's James Clerk Maxwell theorized the existence of electromagnetic waves. His theories were proven by Heinrich Hertz in 1887. Hertz name became adapted to the measure of radio frequencies (Keith 2). All of these men's inventions and theories led to the wireless technology of radio. Up until 1901 the ability communicate was only possible from land to land through wires. It was necessary to create a method for ships to communicate with each other and land for their own security. It was an Italian engineer Guglielmo Marconi who made it possible to communicate through space, bringing Hertz's discoveries to life (Ditingo 15). Wireless communication, or radio, was a big step, but still there was a desire for one to many communication. The next step in radio development was allowing many listeners from one sender (voice and music) over the radio waves. Lee De Forest became interested in the advancements of his predecessors. He patented over 300 inventions, one of the most important being the vacuum tube. It both detected and amplified radio signals. His work was "essential to the development of voice transmission, long-distance radio, and eventually television" ( Campbell 116). In 1906 the first voice and music broadcast was transmitted from Brant Rock, Massachusetts to ships in the Atlantic Ocean by Reginald Fessenden (Ditingo 16). These men and many more inventors and innovators played crucial roles in early radio expansion. One of the biggest names in radio is David Sarnoff. He envisioned radio as a product that could be used in the everyday household for music, news, and information. As this technology developed so did the businesses that would profit from it. In 1919 radio set or "radio music box's" proposed by Sarnoff were sold to the public as a result of his persistence (Keith 2). In the same year the Radio Corporation of America (RCA) was

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