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Guglielmo Marconi (born April 25, 1874, Bologna, Italy—died July 20, 1937, Rome) was an Italian physicist and inventor of a successful wireless telegraph, or radio (1896). In 1909 he received the Nobel Prize for Physics, which he shared with German physicist Ferdinand Braun.
From about 1920 to 1945, radio developed into the first electronic mass medium, monopolizing “the airwaves” and defining, along with newspapers, magazines, and motion pictures, an entire generation of mass culture. About 1945 the appearance of television began to transform radio’s content and role.
Edwin H. Armstrong was an American inventor who laid the foundation for much of modern radio and electronic circuitry, including the regenerative and superheterodyne circuits and the frequency modulation (FM) system.
Radio technology, transmission and detection of communication signals consisting of electromagnetic waves that travel through the air in a straight line or by reflection from the ionosphere or from a communications satellite. Learn more about the history, development, and principles of radio technology in this article.
In 1891 he invented the Tesla coil, an induction coil widely used in radio technology. Tesla was from a family of Serbian origin. His father was an Orthodox priest; his mother was unschooled but highly intelligent.
Radio technology - Wireless, Broadcasting, Communication: Early in the 19th century, Michael Faraday, an English physicist, demonstrated that an electric current can produce a local magnetic field and that the energy in this field will return to the circuit when the current is stopped or changed.
Many telegraphic systems have been used over the centuries, but the term is most often understood to refer to the electric telegraph, which was developed in the mid-19th century and for more than 100 years was the principal means of transmitting printed information by wire or radio wave.
Lee de Forest was an American inventor of the Audion vacuum tube, which made possible live radio broadcasting and became the key component of all radio, telephone, radar, television, and computer systems before the invention of the transistor in 1947.
Alexander Graham Bell, Scottish-born American inventor, scientist, and teacher of the deaf whose foremost accomplishments were the invention of the telephone (1876) and refinement of the phonograph (1886).
An Italian scientist named Guglielmo Marconi got much of the credit for developing radio. In 1897 he started a company that developed several uses for radio. The first radio station started broadcasting in Pittsburgh, Pennsylvania, in 1920. Within two years hundreds of radio stations were started.