Radio
Sounds converted into electromagnetic waves and transmitted directly through space, without connecting wires, to a receiving set, which changes the signals back into sounds. The modern world knows it as the free source of news and entertainment.
Guglielmo Marconi, an Italian physicist and inventor, first patented his radio in 1896. It was in St. John's, Newfoundland, Canada, in December 1901, that he succeeded in receiving signals that had been transmitted from Cornwall, England - proving that the technology was not limited by the curvature of the earth. Marconi's invention brought him the Nobel prize for physics in 1909.
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