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Thomas Alva Edison (February 11, 1847 – October 18, 1931) was an American inventor and businessman who has been described as America's greatest inventor. He developed many devices in fields such as electric power generation, mass communication, sound recording, and motion pictures. These inventions, which include the phonograph, the motion picture camera, and early versions of the electric light bulb, have had a widespread impact on the modern industrialized world. He was one of the first inventors to apply the principles of organized science and teamwork to the process of invention, working with many researchers and employees. He established the first industrial research laboratory.Edison was raised in the American Midwest; early in his career he worked as a telegraph operator, which inspired some of his earliest inventions.
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In computer science, group coded recording or group code recording (GCR) refers to several distinct but related encoding methods for representing data on magnetic media. The first, used in 6250 bpi magnetic tape since 1973, is an error-correcting code combined with a run-length limited (RLL) encoding scheme, belonging into the group of modulation codes.
Opole (Polish: [ɔˈpɔlɛ] (listen); German: Oppeln [ˈʔɔpl̩n]; Silesian: Ôpole; see below) is a city...
Okayama (岡山市, Okayama-shi, Japanese: [okaꜜjama]) is the capital city of Okayama Prefecture in the...
The Kansas City metropolitan area is a bi-state metropolitan area anchored by Kansas City,...