The evolution of radio Free Essay

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The evolution of radio

Radio owes its development to two other inventions, the telegraph and the telephone. All three technologies are closely related. Few radio broadcasts travel through the air exclusively, while many are sent over telephone wires. In the 1860s, James Clerk Maxwell, a Scottish physicist, predicted the existence of radio waves, and in 1886 Heinrich Rudolph Hertz, a German physicist, demonstrated that rapid variations of electric current could be projected into space in the form of radio waves similar to those of light and heat. An Italian inventor by the name of Guglielmo Marconi proved the feasibility of radio communication. He sent and received his first radio signal in Italy in 1895. By 1899 he flashed the first wireless signal

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