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James Ernest Smith, founder of the National Radio Institute. The National Radio School was established in 1914 in Washington, D.C., by James Ernest Smith (1881–1973) and Emanuel R. Haas (1891–1947). 1 Smith was a teacher at McKinley Manual Training School (which was moved in 1926 to its final location now known as McKinley Technology High School).
With the trend toward large-screen television technology, the 32-inch (81-cm) screen size was rapidly disappearing by mid-2009. Though considered bulky and thick compared with their LCD counterparts, some sets such as Panasonic 's Z1 and Samsung 's B860 series are as slim as 2.5 cm (1 in) thick making them comparable to LCDs in this respect.
Screen-door effects are more noticeable than LCD when up close, or on larger sizes. [53] New models are no longer produced. Colored sub-pixels may age at different rates, leading to a color shift, although some models will scan pixels to even out wear and prevent this shift. [54] Sensitive to UV light from direct sunlight.
The abbreviation TV is from 1948. The use of the term to mean "a television set" dates from 1941. [11] The use of the term to mean "television as a medium" dates from 1927. [11] The term telly is more common in the UK. The slang term "the tube" or the "boob tube" derives from the bulky cathode-ray tube used on most TVs until the advent of flat ...
TV: Yes DLP front-projection Flat (limited only by brightness) TV or presentation Yes LCoS self-contained rear-projection Flat 110 [13] 279 TV: Yes LCoS front-projection Flat (limited only by brightness) TV or presentation Yes Laser self-contained rear projection Flat lenticular: 75 [14] 191 TV: Yes LED: Flat 279.92 [15] 711 Billboards, TV: Yes ...
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Canon began SED research in 1986. [5] Their early research used PdO electrodes without the carbon films on top, but controlling the slit width proved difficult. At the time there were a number of flat-screen technologies in early development, and the only one close to commercialization was the plasma display panel (PDP), which had numerous disadvantages – manufacturing cost and energy use ...
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