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1 large-area electronics
Optics: LAEУниверсальный русско-английский словарь > large-area electronics
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2 LAE
1) Медицина: левосторонняя ампутация выше локтя (left above elbow amputation (amputee)), человек, подвергшийся такой ампутации2) Латинский язык: Legacy Of Archon Elite3) Военный термин: lead angle error, lethal area estimate, low-altitude extraction4) Химия: Lyman Alpha Emitter5) Математика: локально почти всюду (locally almost everywhere), наименьшая абсолютная ошибка (least absolute error)6) Грубое выражение: Long Ass Entry7) Оптика: large-area electronics8) Сокращение: Low Altitude Extraction, left arithmetic element9) Физиология: Long above elbow (cast)10) Аэропорты: Lae, Papua New Guinea -
3 прибор с p-n-переходом большой площади
Electronics: large area p-n junction deviceУниверсальный русско-английский словарь > прибор с p-n-переходом большой площади
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4 транзистор с большой площадью переходов
Electronics: large-area transistorУниверсальный русско-английский словарь > транзистор с большой площадью переходов
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5 reflector
adj.reflective, reflecting.m.1 spotlight ( electricity and electronics).2 reflector (telescopio).3 searchlight.4 floodlight.5 headlight.* * *► adjetivo1 reflecting1 (cuerpo) reflector2 ELECTRICIDAD searchlight, spotlight3 (telescopio) reflector, reflecting telescope————————1 (cuerpo) reflector2 ELECTRICIDAD searchlight, spotlight3 (telescopio) reflector, reflecting telescope* * *adj.* * *SM1) (=cuerpo que refleja) reflectorreflector posterior — (Aut) rear reflector
2) (Elec) spotlight; (Aer, Mil) searchlight* * *1) ( pantalla reflectante) reflector2) ( foco) (Teatr) spotlight; (Dep) floodlight; (Mil) searchlight; ( en monumento) floodlight* * *1) ( pantalla reflectante) reflector2) ( foco) (Teatr) spotlight; (Dep) floodlight; (Mil) searchlight; ( en monumento) floodlight* * *reflector11 = searchlight, floodlight, flood lamp, reflector.Ex: The author describes, assesses and illustrates 216 sites which range from airfields and blockhouses, to searchlights and pillboxes, dating from the 16th c. to 1945.
Ex: Attendance is significantly higher when the game is played in the evening under floodlights.Ex: Intensity levels for flood lamps is relatively low because the energy is spread over a large area.Ex: The light direction can be controlled by swivelling the reflector.reflector22 = reflecting, reflective.Ex: Display devices are based mainly on the cathode-ray, or television, tube but other light-emitting or reflecting devices (e.g. plasma, liquid-crystals) are also in use on 'flatscreen' displays.
Ex: Digital paper is based on MelinexR, a flexible polyester film, which is coated with a reflective layer, and acts as a substrate.* foco reflector = floodlight.* * *reflecting ( before n), reflectiveA (pantalla reflectante) reflectorB (foco)1 ( Teatr) spotlight2 ( Dep) floodlight3 ( Mil) searchlight4 (en un monumento) floodlightC (telescopio) reflector, reflecting telescope* * *
reflector sustantivo masculino
(Dep) floodlight;
(Mil) searchlight;
( en monumento) floodlight
reflector,-ora
I adjetivo reflecting, reflective
II sustantivo masculino
1 (dispositivo para reflejar la luz, el calor) reflector
2 (foco de luz potente) searchlight, spotlight
' reflector' also found in these entries:
Spanish:
reflectora
- foco
- luz
- orientar
English:
reflector
- searchlight
- signal lamp
- sweep
- floodlight
- search
- spotlight
* * *reflector, -ora♦ adjreflective♦ nm1. [foco] spotlight;Mil searchlight2. [telescopio] reflector3. [aparato que refleja] reflector* * *m2 EL spotlight* * *: reflectingreflector nm1) : spotlight, searchlight2) : reflector -
6 Babbage, Charles
SUBJECT AREA: Electronics and information technology[br]b. 26 December 1791 Walworth, Surrey, Englandd. 18 October 1871 London, England[br]English mathematician who invented the forerunner of the modern computer.[br]Charles Babbage was the son of a banker, Benjamin Babbage, and was a sickly child who had a rather haphazard education at private schools near Exeter and later at Enfield. Even as a child, he was inordinately fond of algebra, which he taught himself. He was conversant with several advanced mathematical texts, so by the time he entered Trinity College, Cambridge, in 1811, he was ahead of his tutors. In his third year he moved to Peterhouse, whence he graduated in 1814, taking his MA in 1817. He first contributed to the Philosophical Transactions of the Royal Society in 1815, and was elected a fellow of that body in 1816. He was one of the founders of the Astronomical Society in 1820 and served in high office in it.While he was still at Cambridge, in 1812, he had the first idea of calculating numerical tables by machinery. This was his first difference engine, which worked on the principle of repeatedly adding a common difference. He built a small model of an engine working on this principle between 1820 and 1822, and in July of the latter year he read an enthusiastically received note about it to the Astronomical Society. The following year he was awarded the Society's first gold medal. He submitted details of his invention to Sir Humphry Davy, President of the Royal Society; the Society reported favourably and the Government became interested, and following a meeting with the Chancellor of the Exchequer Babbage was awarded a grant of £1,500. Work proceeded and was carried on for four years under the direction of Joseph Clement.In 1827 Babbage went abroad for a year on medical advice. There he studied foreign workshops and factories, and in 1832 he published his observations in On the Economy of Machinery and Manufactures. While abroad, he received the news that he had been appointed Lucasian Professor of Mathematics at Cambridge University. He held the Chair until 1839, although he neither resided in College nor gave any lectures. For this he was paid between £80 and £90 a year! Differences arose between Babbage and Clement. Manufacture was moved from Clement's works in Lambeth, London, to new, fireproof buildings specially erected by the Government near Babbage's house in Dorset Square, London. Clement made a large claim for compensation and, when it was refused, withdrew his workers as well as all the special tools he had made up for the job. No work was possible for the next fifteen months, during which Babbage conceived the idea of his "analytical engine". He approached the Government with this, but it was not until eight years later, in 1842, that he received the reply that the expense was considered too great for further backing and that the Government was abandoning the project. This was in spite of the demonstration and perfectly satisfactory operation of a small section of the analytical engine at the International Exhibition of 1862. It is said that the demands made on manufacture in the production of his engines had an appreciable influence in improving the standard of machine tools, whilst similar benefits accrued from his development of a system of notation for the movements of machine elements. His opposition to street organ-grinders was a notable eccentricity; he estimated that a quarter of his mental effort was wasted by the effect of noise on his concentration.[br]Principal Honours and DistinctionsFRS 1816. Astronomical Society Gold Medal 1823.BibliographyBabbage wrote eighty works, including: 1864, Passages from the Life of a Philosopher.July 1822, Letter to Sir Humphry Davy, PRS, on the Application of Machinery to the purpose of calculating and printing Mathematical Tables.Further Reading1961, Charles Babbage and His Calculating Engines: Selected Writings by Charles Babbage and Others, eds Philip and Emily Morrison, New York: Dover Publications.IMcN -
7 Berezin, Evelyn
SUBJECT AREA: Electronics and information technology[br]b. 1925 New York, USA[br]American pioneer in computer technology.[br]Born into a poor family in the Bronx, New York City, Berezin first majored in business studies but transferred her interest to physics. She graduated in 1946 and then, with the aid of an Atomic Energy Commission fellowship, she obtained her PhD in cosmic ray physics at New York University. When the fellowship expired, opportunities in the developing field of electronic data processing seemed more promising than thise in physics. Berezin entered the firm of Electronic Computer Corporation in 1951 and was asked to "build a computer", although few at that time had actually seen one; the result was the Elecom 200. In 1953, for Underwood Corporation, she designed the first office computer, although it was never marketed, as Underwood sold out to Olivetti.Berezin's next position was as head of logic design for Teleregister Corporation in the late 1950s. Here, she led a team specializing in the design of on-line systems. Her most notable achievement was the design of a nationwide online computer reservation system for United Airlines, the first system of this kind and the precursor of similar on-line systems. It was installed in the early 1960s and was the first large non-military on-line interactive system.In the 1960s Berezin moved to the Digitronics Corporation as manager of logic design, her work here resulted in the first high-speed commercial digital communications terminal. Also in the 1960s, her involvement in Data Secretary, a challenger to the IBM editing typewriter, makes it possible to regard her as one of the pioneers of word processing. In 1976 Berezin transferred from the electronic data and computing field to that of financial management.[br]Further ReadingA.Stanley, 1993, Mothers and Daughters of Invention, Meruchen, NJ: Scarecrow Press, 651–3.LRD -
8 Keller, Arthur
[br]b. 18 August 1901 New York City, New York, USA d. 1983[br]American engineer and developer of telephone switching equipment who was instrumental in the development of electromechanical recording and stereo techniques.[br]He obtained a BSc in electrical engineering at Cooper Union for the Advancement of Science and Art, New York, in 1923 and an MSc from Yale University, and he did postgraduate work at Columbia University. Most of the time he was also on the staff of the Bell Telephone Laboratories. The Bell Laboratories and its predecessors had a long tradition in research in speech and hearing, and in a team of researchers under H.C. Harrison, Keller developed a number of definite improvements in electrical pick-ups, gold-sputtering for matrix work and electrical disc recording equipment. From 1931 onwards the team at Bell Labs developed disc recording for moving pictures and entered into collaboration with Leopold Stokowski and the Philadelphia Orchestra concerning transmission and recording of high-fidelity sound over wires, and stereo techniques. Keller developed a stereo recording system for disc records independently of A.D. Blumlein that was used experimentally in the Bell Labs during the 1930s. During the Second World War Keller was in a team developing sonar (sound navigation and ranging) for the US Navy. After the war he concentrated on switching equipment for telephone exchanges and developed a miniature relay. In 1966 he retired from the Bell Laboratories, where he had been Director of several departments, ending as Director of the Switching Apparatus Laboratory. After retirement he was a consultant internationally, concerning electromechanical devices in particular. When, in 1980, the Bell Laboratories decided to issue LP re-recordings of a number of the experimental records made during the 1930s, Keller was brought in from retirement to supervise the project and decide on the selections.[br]BibliographyKeller was inventor or co-inventor of forty patents, including: US patent no. 2,114,471 (the principles of stereo disc recording); US patent no. 2,612,586 (tape guides with air lubrication); US patent no. 3,366,901 (a miniature crossbar switch).Apart from a large number of highly technical papers, Keller also wrote the article "Phonograph" in the 1950 and 1957 editions of Encyclopaedia Britannica.1986, Reflections of a Stereo Pioneer, San Francisco: San Francisco Press (an honest, personal account).GB-N -
9 Preece, Sir William Henry
[br]b. 15 February 1834 Bryn Helen, Gwynedd, Walesd. 6 November 1913 Penrhos, Gwynedd, Wales[br]Welsh electrical engineer who greatly furthered the development and use of wireless telegraphy and the telephone in Britain, dominating British Post Office engineering during the last two decades of the nineteenth century.[br]After education at King's College, London, in 1852 Preece entered the office of Edwin Clark with the intention of becoming a civil engineer, but graduate studies at the Royal Institution under Faraday fired his enthusiasm for things electrical. His earliest work, as connected with telegraphy and in particular its application for securing the safe working of railways; in 1853 he obtained an appointment with the Electric and National Telegraph Company. In 1856 he became Superintendent of that company's southern district, but four years later he moved to telegraph work with the London and South West Railway. From 1858 to 1862 he was also Engineer to the Channel Islands Telegraph Company. When the various telegraph companies in Britain were transferred to the State in 1870, Preece became a Divisional Engineer in the General Post Office (GPO). Promotion followed in 1877, when he was appointed Chief Electrician to the Post Office. One of the first specimens of Bell's telephone was brought to England by Preece and exhibited at the British Association meeting in 1877. From 1892 to 1899 he served as Engineer-in-Chief to the Post Office. During this time he made a number of important contributions to telegraphy, including the use of water as part of telegraph circuits across the Solent (1882) and the Bristol Channel (1888). He also discovered the existence of inductive effects between parallel wires, and with Fleming showed that a current (thermionic) flowed between the hot filament and a cold conductor in an incandescent lamp.Preece was distinguished by his administrative ability, some scientific insight, considerable engineering intuition and immense energy. He held erroneous views about telephone transmission and, not accepting the work of Oliver Heaviside, made many errors when planning trunk circuits. Prior to the successful use of Hertzian waves for wireless communication Preece carried out experiments, often on a large scale, in attempts at wireless communication by inductive methods. These became of historic interest only when the work of Maxwell and Hertz was developed by Guglielmo Marconi. It is to Preece that credit should be given for encouraging Marconi in 1896 and collaborating with him in his early experimental work on radio telegraphy.While still employed by the Post Office, Preece contributed to the development of numerous early public electricity schemes, acting as Consultant and often supervising their construction. At Worcester he was responsible for Britain's largest nineteenth-century public hydro-electric station. He received a knighthood on his retirement in 1899, after which he continued his consulting practice in association with his two sons and Major Philip Cardew. Preece contributed some 136 papers and printed lectures to scientific journals, ninety-nine during the period 1877 to 1894.[br]Principal Honours and DistinctionsCB 1894. Knighted (KCB) 1899. FRS 1881. President, Society of Telegraph Engineers, 1880. President, Institution of Electrical Engineers 1880, 1893. President, Institution of Civil Engineers 1898–9. Chairman, Royal Society of Arts 1901–2.BibliographyPreece produced numerous papers on telegraphy and telephony that were presented as Royal Institution Lectures (see Royal Institution Library of Science, 1974) or as British Association reports.1862–3, "Railway telegraphs and the application of electricity to the signaling and working of trains", Proceedings of the ICE 22:167–93.Eleven editions of Telegraphy (with J.Sivewright), London, 1870, were published by 1895.1883, "Molecular radiation in incandescent lamps", Proceedings of the Physical Society 5: 283.1885. "Molecular shadows in incandescent lamps". Proceedings of the Physical Society 7: 178.1886. "Electric induction between wires and wires", British Association Report. 1889, with J.Maier, The Telephone.1894, "Electric signalling without wires", RSA Journal.1898, "Aetheric telegraphy", Proceedings of the Institution of Electrical Engineers.Further ReadingJ.J.Fahie, 1899, History of Wireless Telegraphy 1838–1899, Edinburgh: Blackwood. E.Hawkes, 1927, Pioneers of Wireless, London: Methuen.E.C.Baker, 1976, Sir William Preece, F.R.S. Victorian Engineer Extraordinary, London (a detailed biography with an appended list of his patents, principal lectures and publications).D.G.Tucker, 1981–2, "Sir William Preece (1834–1913)", Transactions of the Newcomen Society 53:119–36 (a critical review with a summary of his consultancies).GW / KFBiographical history of technology > Preece, Sir William Henry
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10 Smith, Oberlin
[br]b. 22 March 1840 Cincinnati, Ohio, USAd. 18 July 1926[br]American mechanical engineer, pioneer in experiments with magnetic recording.[br]Of English descent, Smith embarked on an education in mechanical engineering, graduating from West Jersey Academy, Bridgeton, New Jersey, in 1859. In 1863 he established a machine shop in Bridgeton, New Jersey, that became the Ferracute Machine Company in 1877, eventually specializing in the manufacture of presses for metalworking. He seems to have subscribed to design principles considered modern even in the 1990s, "always giving attention to the development of artistic form in combination with simplicity, and with massive strength where required" (bibliographic reference below). He was successful in his business, and developed and patented a large number of mechanical constructions.Inspired by the advent of the phonograph of Edison, in 1878 Smith obtained the tin-foil mechanical phonograph, analysed its shortcomings and performed some experiments in magnetic recording. He filed a caveat in the US Patent Office in order to be protected while he "reduced the invention to practice". However, he did not follow this trail. When there was renewed interest in practical sound recording and reproduction in 1888 (the constructions of Berliner and Bell \& Tainter), Smith published an account of his experiments in the journal Electrical World. In a corrective letter three weeks later it is clear that he was aware of the physical requirements for the interaction between magnetic coil and magnetic medium, but his publications also indicate that he did not as such obtain reproduction of recorded sound.Smith did not try to develop magnetic recording, but he felt it imperative that he be given credit for conceiving the idea of it. When accounts of Valdemar Poulsen's work were published in 1900, Smith attempted to prove some rights in the invention in the US Patent Office, but to no avail.He was a highly respected member of both his community and engineering societies, and in later life became interested in the anti-slavery cause that had also been close to the heart of his parents, as well as in the YMCA movement and in women's suffrage.[br]BibliographyApart from numerous technical papers, he wrote the book Press Working of Metals, 1896. His accounts on the magnetic recording experiments were "Some possible forms of phonograph", Electrical World (8 September 1888): 161 ff, and "Letter to the Editor", Electrical World (29 September 1888): 179.Further ReadingF.K.Engel, 1990, Documents on the Invention of Magnetic Recording in 1878, New York: Audio Engineering Society, Reprint no. 2,914 (G2) (a good overview of the material collected by the Oberlin Smith Society, Bridgeton, New Jersey, in particular as regards the recording experiments; it is here that it is doubted that Valdemar Poulsen developed his ideas independently).GB-N -
11 command
командование (организационная единица, лица руководящего состава), управление; соединение; объединение; группа войск; военный округ; команда, приказание; превосходство; контроль; топ. превышение; командовать; управлять; подавать командыData Services (and Administrative) Systems command — командование [управление] статистических (и административно-управленческих) информационных систем
major command, NATO forces — верховное [стратегическое] командование ОВС НАТО
UN command,Rear — командование тыла сил ООН
US Army Forces, Readiness command — СВ командования войск готовности ВС США
— RAF Transportation command— vest command in -
12 center
центр; пункт; пост; узел; середина; научпо-иселсдовагсльскпй центр, НИЦ; выводить на середину; арт. корректировать; центрировать;air C3 center — центр руководства, управления и связи ВВС
general supply (commodity) center — центр [пункт] снабжения предметами общего предназначения
hard launch (operations) control center — ркт. центр [пункт] управления пуском, защищенный от (поражающих факторов) ЯВ
launch (operations) control center — ркт. пункт управления стартового комплекса [пуском ракет]
tactical fighter weapons (employment development) center — центр разработки способов боевого применения оружия истребителей ТА
— all-sources intelligence center— C center— combat control center— educational center— logistical operations center— logistics services center— operational center— secured communications center— skill development center -
13 sweep
1 noun(a) (with a brush) coup m de balai;∎ the room needs a good sweep la pièce aurait besoin d'un bon coup de balai∎ with a sweep of her arm d'un geste large;∎ with a sweep of his sword/scythe d'un grand coup d'épée/de faux;∎ to make a wide sweep to take a bend prendre du champ pour effectuer un virage;∎ her eyes made a sweep of the room elle parcourut la pièce des yeux;∎ they jumped over the wall between two sweeps of the searchlight ils sautèrent par-dessus le mur entre deux mouvements du projecteur;∎ in or at one sweep d'un seul coup∎ a vast sweep of woodland une vaste étendue de forêt;∎ from where we stood, we could see the whole sweep of the bay de là où nous étions, nous voyions toute (l'étendue de) la baie;∎ the sweep of a car's lines le galbe d'une voiture(d) (range → of gun, telescope) champ m; (→ of lighthouse) balayage m, portée f; (→ of wings) envergure f; (→ of knowledge) étendue f; (→ of opinion) éventail m;∎ the members of the commission represent a broad sweep of opinion les membres de la commission représentent un large éventail d'opinions∎ police made a drugs sweep on the university la police a ratissé l'université à la recherche de drogues;∎ the rescue party made a sweep of the area l'équipe de secours a ratissé les environs ou passé les environs au peigne fin;∎ to make a sweep for mines chercher des mines(f) (chimney sweep) ramoneur m(i) (rapid flow → of river) course f ou flot m rapide∎ to vary the angle of sweep varier la flèche(in rowing) en pointe∎ to sweep the floor balayer le sol;∎ he swept the room il a balayé la pièce;∎ the steps had been swept clean quelqu'un avait balayé l'escalier;∎ she swept the leaves from the path into a pile elle balaya les feuilles du chemin et les mit en tas;∎ I swept the broken glass into the dustpan j'ai poussé le verre cassé dans la pelle avec le balai;∎ he angrily swept the papers off the desk d'un geste furieux, il balaya les papiers de dessus le bureau;∎ she swept the coins off the table into her handbag elle a fait glisser les pièces de la table dans son sac à main(c) (of wind, tide, crowd etc)∎ her dress sweeps the ground sa robe balaie le sol;∎ a storm swept the town un orage ravagea la ville;∎ the wind swept his hat into the river le vent a fait tomber son chapeau dans la rivière;∎ the small boat was swept out to sea le petit bateau a été emporté vers le large;∎ three fishermen were swept overboard un paquet de mer emporta trois pêcheurs;∎ figurative the victorious army swept all before it l'armée victorieuse a tout balayé sur son passage;∎ the incident swept all other thoughts from her mind l'incident lui fit oublier tout le reste;∎ he was swept to power on a wave of popular discontent il a été porté au pouvoir par une vague de mécontentement populaire;∎ he swept her off to Paris for the weekend il l'a emmenée en week-end à Paris;∎ to be swept off one's feet (fall in love) tomber fou amoureux; (be filled with enthusiam) être enthousiasmé;∎ to sweep the board rafler tous les prix;∎ the German athletes swept the board at the Olympics les athlètes allemands ont remporté toutes les médailles aux jeux Olympiques(d) (spread through → of fire, epidemic, rumour, belief) gagner;∎ a new craze is sweeping America une nouvelle mode fait fureur aux États-Unis;∎ a wave of fear swept the city une vague de peur gagna la ville;∎ the flu epidemic which swept Europe in 1919 l'épidémie de grippe qui sévit en Europe en 1919(e) (scan, survey) parcourir;∎ her eyes swept the horizon/the room elle parcourut l'horizon/la pièce des yeux;∎ to sweep the horizon with a telescope parcourir ou balayer l'horizon avec un télescope;∎ searchlights continually sweep the open ground outside the prison camp des projecteurs parcourent ou balayent sans cesse le terrain qui entoure la prison(f) (win easily) gagner ou remporter haut la main;∎ the Popular Democratic Party swept the polls le parti démocratique populaire a fait un raz-de-marée aux élections;∎ the port has been swept for mines le port a été dragué(a) (with a brush) balayer(b) (move quickly, powerfully)∎ harsh winds swept across the bleak steppes un vent violent balayait les mornes steppes;∎ the beam swept across the sea le faisceau lumineux balaya la mer;∎ I watched storm clouds sweeping across the sky je regardais des nuages orageux filer dans le ciel;∎ a hurricane swept through the town un ouragan a dévasté la ville;∎ the Barbarians who swept into the Roman Empire les Barbares qui déferlèrent sur l'Empire romain;∎ a wave of nationalism swept through the country une vague de nationalisme a déferlé sur le pays;∎ the memories came sweeping back tous ces souvenirs me/lui/ etc sont revenus à la mémoire;∎ a wave of panic swept over him une vague de panique le submergea;∎ the planes swept low over the town les avions passèrent en rase-mottes au-dessus de la ville;∎ the fire swept through the forest l'incendie a ravagé la forêt(c) (move confidently, proudly)∎ he swept into the room il entra majestueusement dans la pièce;∎ she swept past me without even a glance elle passa majestueusement à côté de moi sans même m'adresser un regard(d) (stretch → land) s'étendre;∎ the rolling prairies sweep away into the distance les prairies ondoyantes se perdent dans le lointain;∎ the fields sweep down to the lake les prairies descendent en pente douce jusqu'au lac;∎ the river sweeps round in a wide curve le fleuve décrit une large courbe∎ to sweep for mines draguer, déminer►► sweep boat bateau m en pointe;sweep hand trotteuse f;sweep rowing nage f en pointe(of wind, tide, crowd) emporter, entraîner;∎ we were swept along by a tide of nationalism nous avons été balayés par une vague nationaliste(a) (object, person) écarter(a) (dust, snow) balayer(b) (of wind, tide, crowd) emporter, entraîner;∎ three bathers were swept away by a huge wave trois baigneurs ont été emportés par une énorme vague(car) passer à toute vitesse; (person → majestically) passer majestueusement; (→ disdainfully) passer dédaigneusement∎ hills sweeping down to the sea des collines qui descendent vers la mer∎ the enemy swept down on us l'ennemi s'abattit ou fonça sur nous(clean → room) balayer➲ sweep past = sweep by➲ sweep up(dust, leaves) balayer;∎ she swept up the pieces of glass elle balaya les morceaux de verre;∎ he swept the leaves up into a pile il fit un tas des feuilles en les balayant;∎ with her hair swept up into a chignon avec ses cheveux relevés en chignon;∎ she swept up her two babies and… en toute hâte, elle prit ses deux bébés dans ses bras et…(a) (clean up) balayer;∎ can you sweep up after the meeting? peux-tu balayer ou peux-tu passer un coup de balai après la réunion?∎ she swept up to me (majestically) elle s'approcha de moi d'un pas majestueux; (angrily) elle s'approcha de moi d'un pas furieux;∎ the car swept up to the main entrance (quickly) la voiture s'approcha à toute allure de l'entrée principale; (impressively) la voiture s'approcha à une allure majestueuse de l'entrée principale -
14 unit
организационная единица; боевая единица (напр. корабль, ЛА танк); подразделение; часть; соединение; расчетно-снабженческая единица; секция; орган; элемент; комплект; агрегат; установка; см. тж. elementbulk petrol (transport) unit — Бр. часть [подразделение] подвоза наливного (бестарного) горючего
counter C3 unit — часть [подразделение] подавления системы оперативного управления и связи
Fleet Marine (Corps) reconnaissance unit — разведывательное подразделение [часть] флотских сил МП
multisensor (AA) firing unit 3PK — с приборным комплексом из нескольких систем обнаружения и сопровождения
photo (graphic) reconnaissance unit — фоторазведывательная часть [подразделение]
surface-launched unit, fuel air explosive — установка дистанционного разминирования объемным взрывом
surface-launched unit, mine — установка дистанционного минирования
tactical (air) control unit — часть [подразделение] управления ТА
war (time) strength (TOE) unit — часть, укомплектованная по штатам военного времени
— air unit— ASA unit— BM unit— border operation unit— car unit— depot support unit— dry unit— EW unit— GM unit— host country unit— HQ unit— logistics support unit— manpack radio unit— marksmanship training unit— mechanized infantry unit— missile-armed unit— nuclear weapon unit— provisional unit— QM unit— Rangers unit— supported unit— TOE unit— transportation unit— truck transport unit— van unit— wet unit* * *1) часть; 2) единица -
15 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 -
16 Pierce, John Robinson
[br]b. 27 March 1910 Des Moines, Iowa, USA[br]American scientist and communications engineer said to be the "father" of communication satellites.[br]From his high-school days, Pierce showed an interest in science and in science fiction, writing under the pseudonym of J.J.Coupling. After gaining Bachelor's, Master's and PhD degrees at the California Institute of Technology (CalTech) in Pasadena in 1933, 1934 and 1936, respectively, Pierce joined the Bell Telephone Laboratories in New York City in 1936. There he worked on improvements to the travelling-wave tube, in which the passage of a beam of electrons through a helical transmission line at around 7 per cent of the speed of light was made to provide amplification at 860 MHz. He also devised a new form of electrostatically focused electron-multiplier which formed the basis of a sensitive detector of radiation. However, his main contribution to electronics at this time was the invention of the Pierce electron gun—a method of producing a high-density electron beam. In the Second World War he worked with McNally and Shepherd on the development of a low-voltage reflex klystron oscillator that was applied to military radar equipment.In 1952 he became Director of Electronic Research at the Bell Laboratories' establishment, Murray Hill, New Jersey. Within two years he had begun work on the possibility of round-the-world relay of signals by means of communication satellites, an idea anticipated in his early science-fiction writings (and by Arthur C. Clarke in 1945), and in 1955 he published a paper in which he examined various possibilities for communications satellites, including passive and active satellites in synchronous and non-synchronous orbits. In 1960 he used the National Aeronautics and Space Administration 30 m (98 1/2 ft) diameter, aluminium-coated Echo 1 balloon satellite to reflect telephone signals back to earth. The success of this led to the launching in 1962 of the first active relay satellite (Telstar), which weighed 170 lb (77 kg) and contained solar-powered rechargeable batteries, 1,000 transistors and a travelling-wave tube capable of amplifying the signal 10,000 times. With a maximum orbital height of 3,500 miles (5,600 km), this enabled a variety of signals, including full bandwidth television, to be relayed from the USA to large receiving dishes in Europe.From 1971 until his "retirement" in 1979, Pierce was Professor of Electrical Engineering at CalTech, after which he became Chief Technologist at the Jet Propulsion Laboratories, also in Pasadena, and Emeritus Professor of Engineering at Stanford University.[br]Principal Honours and DistinctionsInstitute of Electrical and Electronics Engineers Morris N.Liebmann Memorial Award 1947; Edison Medal 1963; Medal of Honour 1975. Franklin Institute Stuart Ballantine Award 1960. National Medal of Science 1963. Danish Academy of Science Valdemar Poulsen Medal 1963. Marconi Award 1974. National Academy of Engineering Founders Award 1977. Japan Prize 1985. Arthur C.Clarke Award 1987. Honorary DEng Newark College of Engineering 1961. Honorary DSc Northwest University 1961, Yale 1963, Brooklyn Polytechnic Institute 1963. Editor, Proceedings of the Institute of Radio Engineers 1954–5.Bibliography23 October 1956, US patent no. 2,768,328 (his development of the travelling-wave tube, filed on 5 November 1946).1947, with L.M.Field, "Travelling wave tubes", Proceedings of the Institute of RadioEngineers 35:108 (describes the pioneering improvements to the travelling-wave tube). 1947, "Theory of the beam-type travelling wave tube", Proceedings of the Institution ofRadio Engineers 35:111. 1950, Travelling Wave Tubes.1956, Electronic Waves and Messages. 1962, Symbols, Signals and Noise.1981, An Introduction to Information Theory: Symbols, Signals and Noise: Dover Publications.1990, with M.A.Knoll, Signals: Revolution in Electronic Communication: W.H.Freeman.KF -
17 LAN
Un LAN (local area network) est un réseau local permettant la connexion à l’internet (ou l’intranet) d’équipements informatiques situés dans un rayon géographique limité, par exemple ceux d’une maison, d’une entreprise ou d’une université. Une variante du LAN est le WLAN (wireless local area network), à savoir un réseau local sans fil utilisant un standard de communication radio-électrique. Le MAN (metropolitan area network) connecte les usagers dans une zone géographique plus étendue, par exemple une ville. Le WAN (wide area network) les connecte dans un large secteur géographique, par exemple une région. La connexion à l’internet sans fil est régie par les standards 802.11 ou 802.16 de l’IEEE (Institute of Electrical and Electronics Engineers), l’organisme international de normalisation dans ce domaine. -
18 Alexanderson, Ernst Frederik Werner
[br]b. 25 January 1878 Uppsala, Swedend. ? May 1975 Schenectady, New York, USA[br]Swedish-American electrical engineer and prolific radio and television inventor responsible for developing a high-frequency alternator for generating radio waves.[br]After education in Sweden at the High School and University of Lund and the Royal Institution of Technology in Stockholm, Alexanderson took a postgraduate course at the Berlin-Charlottenburg Engineering College. In 1901 he began work for the Swedish C \& C Electric Company, joining the General Electric Company, Schenectady, New York, the following year. There, in 1906, together with Fessenden, he developed a series of high-power, high-frequency alternators, which had a dramatic effect on radio communications and resulted in the first real radio broadcast. His early interest in television led to working demonstrations in his own home in 1925 and at the General Electric laboratories in 1927, and to the first public demonstration of large-screen (7 ft (2.13 m) diagonal) projection TV in 1930. Another invention of significance was the "amplidyne", a sensitive manufacturing-control system subsequently used during the Second World War for controlling anti-aircraft guns. He also contributed to developments in electric propulsion and radio aerials.He retired from General Electric in 1948, but continued television research as a consultant for the Radio Corporation of America (RCA), filing his 321st patent in 1955.[br]Principal Honours and DistinctionsInstitution of Radio Engineers Medal of Honour 1919. President, IERE 1921. Edison Medal 1944.BibliographyPublications relating to his work in the early days of radio include: "Magnetic properties of iron at frequencies up to 200,000 cycles", Transactions of the American Institute of Electrical Engineers (1911) 30: 2,443."Transatlantic radio communication", Transactions of the American Institute of ElectricalEngineers (1919) 38:1,269.The amplidyne is described in E.Alexanderson, M.Edwards and K.Boura, 1940, "Dynamo-electric amplifier for power control", Transactions of the AmericanInstitution of Electrical Engineers 59:937.Further ReadingE.Hawkes, 1927, Pioneers of Wireless, Methuen (provides an account of Alexanderson's work on radio).J.H.Udelson, 1982, The Great Television Race: A History of the American Television Industry 1925–1941, University of Alabama Press (provides further details of his contribution to the development of television).KFBiographical history of technology > Alexanderson, Ernst Frederik Werner
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19 Armstrong, Edwin Howard
[br]b. 18 December 1890 New York City, New York, USAd. 31 January 1954 New York City, New York, USA[br]American engineer who invented the regenerative and superheterodyne amplifiers and frequency modulation, all major contributions to radio communication and broadcasting.[br]Interested from childhood in anything mechanical, as a teenager Armstrong constructed a variety of wireless equipment in the attic of his parents' home, including spark-gap transmitters and receivers with iron-filing "coherer" detectors capable of producing weak Morse-code signals. In 1912, while still a student of engineering at Columbia University, he applied positive, i.e. regenerative, feedback to a Lee De Forest triode amplifier to just below the point of oscillation and obtained a gain of some 1,000 times, giving a receiver sensitivity very much greater than hitherto possible. Furthermore, by allowing the circuit to go into full oscillation he found he could generate stable continuous-waves, making possible the first reliable CW radio transmitter. Sadly, his claim to priority with this invention, for which he filed US patents in 1913, the year he graduated from Columbia, led to many years of litigation with De Forest, to whom the US Supreme Court finally, but unjustly, awarded the patent in 1934. The engineering world clearly did not agree with this decision, for the Institution of Radio Engineers did not revoke its previous award of a gold medal and he subsequently received the highest US scientific award, the Franklin Medal, for this discovery.During the First World War, after some time as an instructor at Columbia University, he joined the US Signal Corps laboratories in Paris, where in 1918 he invented the superheterodyne, a major contribution to radio-receiver design and for which he filed a patent in 1920. The principle of this circuit, which underlies virtually all modern radio, TV and radar reception, is that by using a local oscillator to convert, or "heterodyne", a wanted signal to a lower, fixed, "intermediate" frequency it is possible to obtain high amplification and selectivity without the need to "track" the tuning of numerous variable circuits.Returning to Columbia after the war and eventually becoming Professor of Electrical Engineering, he made a fortune from the sale of his patent rights and used part of his wealth to fund his own research into further problems in radio communication, particularly that of receiver noise. In 1933 he filed four patents covering the use of wide-band frequency modulation (FM) to achieve low-noise, high-fidelity sound broadcasting, but unable to interest RCA he eventually built a complete broadcast transmitter at his own expense in 1939 to prove the advantages of his system. Unfortunately, there followed another long battle to protect and exploit his patents, and exhausted and virtually ruined he took his own life in 1954, just as the use of FM became an established technique.[br]Principal Honours and DistinctionsInstitution of Radio Engineers Medal of Honour 1917. Franklin Medal 1937. IERE Edison Medal 1942. American Medal for Merit 1947.Bibliography1922, "Some recent developments in regenerative circuits", Proceedings of the Institute of Radio Engineers 10:244.1924, "The superheterodyne. Its origin, developments and some recent improvements", Proceedings of the Institute of Radio Engineers 12:549.1936, "A method of reducing disturbances in radio signalling by a system of frequency modulation", Proceedings of the Institute of Radio Engineers 24:689.Further ReadingL.Lessing, 1956, Man of High-Fidelity: Edwin Howard Armstrong, pbk 1969 (the only definitive biography).W.R.Maclaurin and R.J.Harman, 1949, Invention \& Innovation in the Radio Industry.J.R.Whitehead, 1950, Super-regenerative Receivers.A.N.Goldsmith, 1948, Frequency Modulation (for the background to the development of frequency modulation, in the form of a large collection of papers and an extensive bibliog raphy).KFBiographical history of technology > Armstrong, Edwin Howard
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20 Davidson, Robert
[br]b. 18 April 1804 Aberdeen, Scotlandd. 16 November 1894 Aberdeen, Scotland[br]Scottish chemist, pioneer of electric power and builder of the first electric railway locomotives.[br]Davidson, son of an Aberdeen merchant, attended Marischal College, Aberdeen, between 1819 and 1822: his studies included mathematics, mechanics and chemistry. He subsequently joined his father's grocery business, which from time to time received enquiries for yeast: to meet these, Davidson began to manufacture yeast for sale and from that start built up a successful chemical manufacturing business with the emphasis on yeast and dyes. About 1837 he started to experiment first with electric batteries and then with motors. He invented a form of electromagnetic engine in which soft iron bars arranged on the periphery of a wooden cylinder, parallel to its axis, around which the cylinder could rotate, were attracted by fixed electromagnets. These were energized in turn by current controlled by a simple commutaring device. Electric current was produced by his batteries. His activities were brought to the attention of Michael Faraday and to the scientific world in general by a letter from Professor Forbes of King's College, Aberdeen. Davidson declined to patent his inventions, believing that all should be able freely to draw advantage from them, and in order to afford an opportunity for all interested parties to inspect them an exhibition was held at 36 Union Street, Aberdeen, in October 1840 to demonstrate his "apparatus actuated by electro-magnetic power". It included: a model locomotive carriage, large enough to carry two people, that ran on a railway; a turning lathe with tools for visitors to use; and a small printing machine. In the spring of 1842 he put on a similar exhibition in Edinburgh, this time including a sawmill. Davidson sought support from railway companies for further experiments and the construction of an electromagnetic locomotive; the Edinburgh exhibition successfully attracted the attention of the proprietors of the Edinburgh 585\& Glasgow Railway (E \& GR), whose line had been opened in February 1842. Davidson built a full-size locomotive incorporating his principle, apparently at the expense of the railway company. The locomotive weighed 7 tons: each of its two axles carried a cylinder upon which were fastened three iron bars, and four electromagnets were arranged in pairs on each side of the cylinders. The motors he used were reluctance motors, the power source being zinc-iron batteries. It was named Galvani and was demonstrated on the E \& GR that autumn, when it achieved a speed of 4 mph (6.4 km/h) while hauling a load of 6 tons over a distance of 1 1/2 miles (2.4 km); it was the first electric locomotive. Nevertheless, further support from the railway company was not forthcoming, although to some railway workers the locomotive seems to have appeared promising enough: they destroyed it in Luddite reaction. Davidson staged a further exhibition in London in 1843 without result and then, the cost of battery chemicals being high, ceased further experiments of this type. He survived long enough to see the electric railway become truly practicable in the 1880s.[br]Bibliography1840, letter, Mechanics Magazine, 33:53–5 (comparing his machine with that of William Hannis Taylor (2 November 1839, British patent no. 8,255)).Further Reading1891, Electrical World, 17:454.J.H.R.Body, 1935, "A note on electro-magnetic engines", Transactions of the Newcomen Society 14:104 (describes Davidson's locomotive).F.J.G.Haut, 1956, "The early history of the electric locomotive", Transactions of the Newcomen Society 27 (describes Davidson's locomotive).A.F.Anderson, 1974, "Unusual electric machines", Electronics \& Power 14 (November) (biographical information).—1975, "Robert Davidson. Father of the electric locomotive", Proceedings of the Meeting on the History of Electrical Engineering Institution of Electrical Engineers, 8/1–8/17 (the most comprehensive account of Davidson's work).A.C.Davidson, 1976, "Ingenious Aberdonian", Scots Magazine (January) (details of his life).PJGR / GW
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