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In 2007, experimental OLEDs were created which can sustain 400 cd/m 2 of luminance for over 198,000 hours for green OLEDs and 62,000 hours for blue OLEDs. [136] In 2012, OLED lifetime to half of the initial brightness was improved to 900,000 hours for red, 1,450,000 hours for yellow and 400,000 hours for green at an initial luminance of 1,000 ...
A television set, also called a television receiver, television, TV set, TV, or telly, is a device that combines a tuner, display, and speakers for the purpose of viewing television. Introduced in the late 1920s in mechanical form, television sets became a popular consumer product after World War II in electronic form, using cathode ray tubes .
The earliest CRTs were monochrome and were used primarily in oscilloscopes and black and white televisions. The first commercial colour CRT was produced in 1954. CRTs were the single most popular display technology used in television sets and computer monitors for over half a century; it was not until the 2000s that LCDs began to gradually ...
Modern wooden fireplace mantel in a suburban American home. Up until the 20th century and the invention of mechanized contained heating systems, rooms were heated by an open or central fire. A modern fireplace usually serves as an element to enhance the grandeur of an interior space rather than as a heat source.
The first generation of video game consoles lasted from 1972 to 1983. The first console of this generation was the 1972 Magnavox Odyssey. [1] The last new console release of the generation was most likely the Compu-Vision 440 by radio manufacturer Bentley in 1983, [2] though other systems were also released in that year.
Elements of a pocket television CRT: (1) Recessed Screen, (2) Electron Beam, (3) Electron Gun. These devices often have stereo 1⁄8 inch (3.5 mm) phono plugs for composite video-analog mono audio relay to serve them as composite monitors; also, some models have mono 3.5 mm jacks for the broadcast signal that is usually relayed via F connector or Belling-Lee connector on standard television ...
Mantel—Either the shelf above a fireplace or the structure to support masonry above a fireplace [23] Smoke shelf—A shelf below the smoke chamber and behind the damper. It collects debris and water falling down the flue. [24] Throat (waist)—The narrow area above a fireplace usually where the damper is located. [21]
Satellite TV systems formerly used systems known as television receive-only. These systems received analog signals transmitted in the C-band spectrum from FSS type satellites and required the use of large dishes. Consequently, these systems were nicknamed "big dish" systems and were more expensive and less popular. [170]