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TELEVISION (Site not responding. Last check: 2007-10-10) |
 | | The electrical signal is delivered from the television camera to the display device via a cascade of processing, storage, and transmission systems, which may include transmission by electromagnetic waves, as in terrestrial (“over-the-air”) and satellite broadcast systems, or by cable and optical fibers, as in cable systems. |
 | | This ensures that a desired television signal can be received at most locations in the station's service area most of the time, with an acceptably low level of interference from undesired television signals operating on the same or adjacent channels. |
 | | Television, including prerecorded video, interactive television, and multimedia, is used extensively and effectively for education and training in schools, colleges, businesses, and government operations including the military. |
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