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Thomas Alva Edison
born 1847 in Milan, Ohio (USA); died 1931 in West Orange, New Jersey (USA). American electrical engineer and businessman. Perfecting Alexander Graham Bell’s telephone, in 1876 Edison invented the first carbon-grain microphone, in 1877 the phonograph, and in 1879 the carbon-filament lamp. In 1882, founded on more of his inventions, he set the world’s first public power station in operation in New York. In 1883, Edison discovered the glowing emission (the so-called Edison Effect). Between 1895 and 1896, he invented the vitascope (moving picture projector), and in 1899 the cinematograph (for filming motion pictures). He registered altogether more than 1000 patents.
Source: dtv Brockhaus Lexikon, Mannheim and Munich, 1989