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History of television. Family watching TV, 1958. The concept of television is the work of many individuals in the late 19th and early 20th centuries. The first practical transmissions of moving images over a radio system used mechanical rotating perforated disks to scan a scene into a time-varying signal that could be reconstructed at a ...
1922: Charles Francis Jenkins' first public demonstration of television principles. A set of static photographic pictures is transmitted from Washington, D.C. to the Navy station NOF in Anacostia by telephone wire, and then wirelessly back to Washington; Philo Farnsworth first describes an image dissector tube, which uses cesium to produce images electronically, but will not produce a working ...
This list should not be interpreted to mean the whole of a country had television service by the specified date. For example, the United States, Great Britain, Germany, and the former Soviet Union all had operational television stations and a limited number of viewers by 1939. Very few cities in each country had television service.
The first Golden Age of Television[ 1] is an era of television in the United States marked by its large number of live productions. The period is generally recognized as beginning in 1947 with the first episode of the drama anthology Kraft Television Theater [ 2] and ending in 1960 with the final episode of Playhouse 90 [ 3] (although a few ...
Television is one of the major mass media outlets in the United States. In 2011, 96.7% of households owned television sets; [ 1] about 114,200,000 American households owned at least one television set each in August 2013. [ 2] Most households have more than one set. The percentage of households owning at least one television set peaked at 98.4% ...
Cable television first became available in the United States in 1948. [ 1] By 1989, 53 million U.S. households received cable television subscriptions, [ 2] with 60 percent of all U.S. households doing so in 1992. [ 3] Most cable viewers in the U.S. reside in the suburbs and tend to be middle class; [ 4] cable television is less common in low ...
The elements of a simple broadcast television system are: . An image source. This is the electrical signal that represents a visual image, and may be derived from a professional video camera in the case of live television, a video tape recorder for playback of recorded images, or telecine with a flying spot scanner for the transfer of motion pictures to video).
These timelines of world history detail recorded events since the creation of writing roughly 5000 years ago to the present day. For events from c. 3200 BC – c. 500 see: Timeline of ancient history. For events from c. 500 – c. 1499, see: Timeline of post-classical history. For events from c. 1500, see: Timelines of modern history.