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Radio
The Radio was one of these inventions, developed in 1873. This technology was invented by Scottish-born physicist James Clerk Maxwell, it involved the transmission of electrical signals through the air. Hertz used this technology to send and receive Morse code messages in 1895. Marconi built on these experiments to produce the first wireless telegraph. Guglielmo Marconi’s wireless telegraph was used to communicate across the Atlantic in 1901.