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NadaMucho Forums > Pop Culture, Categorically > TV > History of television
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Author Topic: History of television  (Read 2412 times)
rrrrr
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« on: April 16, 2010, 08:28:32 AM »
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In its early stages of development, television employed a combination of optical, mechanical and electronic technologies to capture, transmit and display a visual image. By the late 1920s, however, those employing only optical and electronic technologies were being explored. All modern television systems rely on the latter, although the knowledge gained from the work on mechanical-dependent systems was crucial in the development of fully electronic television.
American family watching TV, 1958

The first time images were transmitted electrically via early mechanical fax machines, including the pantelegraph, developed in the late 1800s. The concept of electrically-powered transmission of television images in motion, was first sketched in 1878 as the telephonoscope, shortly after the invention of the telephone. At the time, it was imagined by early science fiction authors, that someday that light could be transmitted over wires, as sounds were.
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Genial
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« Reply #1 on: November 24, 2010, 06:17:57 PM »
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Advertisements take airtime away from programs. Commercial breaks have also become longer. In the 1960s a typical hour-long American show would run for 51 minutes excluding advertisements. Today, a similar program would only be 42 minutes long; a typical 30-minute block of time now includes 22 minutes [6] of programming with six minutes of national advertising and two minutes of local. Some networks even use a 18 minutes of show/12 minutes of commercial split.[7] A television broadcast of the 101-minute film The Wizard of Oz (1939) for instance, could, in the early to mid-1960s, take two hours even with commercials. Today, a telecast of the same film would last approximately two hours and 15 minutes including commercials.
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« Reply #2 on: January 17, 2012, 01:52:45 AM »
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Television is the greatest invention of the century. Thanks for the information about History of television.
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« Reply #3 on: February 09, 2012, 04:29:37 AM »
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The history of television records the work of numerous engineers and inventors in several countries over many decades. The fundamental principles of television were initially explored using electromechanical methods to scan, transmit and reproduce an image. As electronic camera and display tubes were perfected, electromechanical television gave way to all-electronic broadcast television systems in nearly all applications.
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