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1 Phosphor manufactured by Derby Luminescents of Enfield
Abbreviation: DLMA (mixture of CSA and para amino benzophenone makes a blue-green flash followed by blue phosphorescence)Универсальный русско-английский словарь > Phosphor manufactured by Derby Luminescents of Enfield
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2 дисплей зеленого свечения
Русско-английский большой базовый словарь > дисплей зеленого свечения
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3 зеленого свечения
Русско-английский большой базовый словарь > зеленого свечения
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4 дисплей зеленого свечения
Русско-английский словарь по вычислительной технике и программированию > дисплей зеленого свечения
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5 vihreäfosforimonitori
• green-phosphor monitor -
6 дисплей зелёного свечения
1) Engineering: green phosphor display2) Information technology: green-phosphor displayУниверсальный русско-английский словарь > дисплей зелёного свечения
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7 зелёный люминофор
Engineering: green phosphor, green-emitting phosphor -
8 люминофор зелёного свечения
Engineering: green phosphor, green-emitting phosphorУниверсальный русско-английский словарь > люминофор зелёного свечения
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9 зеленого свечения
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10 дисплей с интенсификацией свечения
Русско-английский большой базовый словарь > дисплей с интенсификацией свечения
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11 Flechsig, W.
SUBJECT AREA: Electronics and information technology[br]fl. c.1938 Germany[br]German engineer notable for early patents that foreshadowed the development of the shadowmask colour cathode ray tube.[br]In 1938, whilst working for a German electrical company, Flechsig filed a patent in which he described the use of an array of stretched parallel wires to control the landing of either one or three electron beams on separate red, green and blue phosphor stripes within a single cathode ray tube. Whilst the single-beam arrangement required subsidiary deflection to alternate the beam landing angle, the three-beam version effectively used the wires to "mask" the landing of the electron beams so that each one only illuminated the relevant colour phosphor stripes. Although not developed at the time, the concept anticipated the subsequent invention of the shadowmask tube by RCA in the early 1950s and, even more closely, the development of the Sony Trinitron some years later.[br]Bibliography1938, German patent no. 736, 575.1941, French patent no. 866, 065.Further ReadingE.W.Herold, 1976, "A history of colour television displays", Proceedings of the Institute of Electrical and Electronics Engineers 64:1,331.K.G.Freeman, "The history of colour CRTs. A personal view", International Conference on the History of Television, Institution of Electrical Engineers Publication no. 271, p.38.KF -
12 Fischer, E.
[br]fl. 1930s Switzerland[br]Swiss engineer who invented the Eidophor large-screen television projector.[br]Fischer was a professor of engineering at the Swiss Federal Institute of Technology in the late 1930s. Interested in the emerging technology for television, he was of the opinion that the growth of television would take place through the development and use of large-screen cinema-type displays serving large audiences. He therefore carried out research into suitable techniques. Realizing the brightness limitations of projection systems based on the optical magnification of the image produced by a conventional cathode ray tube, he used the deflected electron-beam, not to excite a phosphor screen, but to deposit a variable charge on the surface of a film or oil. By means of a Schlieren slit system, the consequent deformations of the surface were used to spatially modulate the light from an electric arc or a discharge tube, giving a large, high-brightness image. Although the idea, first put forward in 1939, was not taken up for cinema television, the subsequent requirement of the US National Aeronautics and Space Administration in the 1960s for large colour displays in its Command and Control Centres led to the successful development of the idea by Gretag AG, a subsidiary of Ciba-Geigy: separate units were used for the red, green and blue images. In the 1990s, colour Eidophor projectors were used for large conference meetings and pop concerts.[br]Bibliography1946, "Views on the suitability of a cathode ray tube with a fluorescent screen for projection in cinemas", Bulletin of the Association of Swiss Electricians 39:468 (describes the concept of the Eidophor).Further ReadingE.H.Baumann, 1953, "The Fischer large screen projection system", Journal of Society of Motion Picture and Television Engineers 60:344.A.Robertson, 1976, "Projection television. A review of current practice in large-screen projectors", Wireless World 47.KF -
13 Goldmark, Peter Carl
[br]b. 2 December 1906 Budapest, Hungaryd. 7 December 1977 Westchester Co., New York, USA[br]Austro-Hungarian engineer who developed the first commercial colour television system and the long-playing record.[br]After education in Hungary and a period as an assistant at the Technische Hochschule, Berlin, Goldmark moved to England, where he joined Pye of Cambridge and worked on an experimental thirty-line television system using a cathode ray tube (CRT) for the display. In 1936 he moved to the USA to work at Columbia Broadcasting Laboratories. There, with monochrome television based on the CRT virtually a practical proposition, he devoted his efforts to finding a way of producing colour TV images: in 1940 he gave his first demonstration of a working system. There then followed a series of experimental field-sequential colour TV systems based on segmented red, green and blue colour wheels and drums, where the problem was to find an acceptable compromise between bandwidth, resolution, colour flicker and colour-image breakup. Eventually he arrived at a system using a colour wheel in combination with a CRT containing a panchromatic phosphor screen, with a scanned raster of 405 lines and a primary colour rate of 144 fields per second. Despite the fact that the receivers were bulky, gave relatively poor, dim pictures and used standards totally incompatible with the existing 525-line, sixty fields per second interlaced monochrome (black and white) system, in 1950 the Federal Communications Commission (FCC), anxious to encourage postwar revival of the industry, authorized the system for public broadcasting. Within eighteen months, however, bowing to pressure from the remainder of the industry, which had formed its own National Television Systems Committee (NTSC) to develop a much more satisfactory, fully compatible system based on the RCA three-gun shadowmask CRT, the FCC withdrew its approval.While all this was going on, Goldmark had also been working on ideas for overcoming the poor reproduction, noise quality, short playing-time (about four minutes) and limited robustness and life of the long-established 78 rpm 12 in. (30 cm) diameter shellac gramophone record. The recent availability of a new, more robust, plastic material, vinyl, which had a lower surface noise, enabled him in 1948 to reduce the groove width some three times to 0.003 in. (0.0762 mm), use a more lightly loaded synthetic sapphire stylus and crystal transducer with improved performance, and reduce the turntable speed to 33 1/3 rpm, to give thirty minutes of high-quality music per side. This successful development soon led to the availability of stereophonic recordings, based on the ideas of Alan Blumlein at EMI in the 1930s.In 1950 Goldmark became a vice-president of CBS, but he still found time to develop a scan conversion system for relaying television pictures to Earth from the Lunar Orbiter spacecraft. He also almost brought to the market a domestic electronic video recorder (EVR) system based on the thermal distortion of plastic film by separate luminance and coded colour signals, but this was overtaken by the video cassette recorder (VCR) system, which uses magnetic tape.[br]Principal Honours and DistinctionsInstitute of Electrical and Electronics Engineers Morris N.Liebmann Award 1945. Institute of Electrical and Electronics Engineers Vladimir K. Zworykin Award 1961.Bibliography1951, with J.W.Christensen and J.J.Reeves, "Colour television. USA Standard", Proceedings of the Institute of Radio Engineers 39: 1,288 (describes the development and standards for the short-lived field-sequential colour TV standard).1949, with R.Snepvangers and W.S.Bachman, "The Columbia long-playing microgroove recording system", Proceedings of the Institute of Radio Engineers 37:923 (outlines the invention of the long-playing record).Further ReadingE.W.Herold, 1976, "A history of colour television displays", Proceedings of the Institute of Electrical and Electronics Engineers 64:1,331.See also: Baird, John LogieKF
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