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1 Glow Discharge Laboratory
Meteorology: GDLУниверсальный русско-английский словарь > Glow Discharge Laboratory
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2 GDL
1) Общая лексика: Graduate Diploma in Law2) Компьютерная техника: Graphic Description Language, Люксембургский спутник связи3) Военный термин: gas-dynamic laser, global data link4) Техника: glass development laser5) Шутливое выражение: Grey Death Legion6) Метеорология: Glow Discharge Laboratory7) Сокращение: Gas Dynamic Laser8) Вычислительная техника: Geometric Description Language9) Транспорт: Garage Door Lube10) Образование: Graduated Driver License11) Должность: Grand Duchy Of Luxembourg12) Аэропорты: Guadalajara, Mexico -
3 microphone
= Mic- alloy microphone
- alloy-granule microphone
- ammonium-dihydrogen-phosphate microphone
- antinoise microphone
- astatic microphone
- band microphone
- barium-titanate microphone
- bidirectional microphone
- breast microphone
- breast-plate microphone
- built-in microphone
- button microphone
- capacitance microphone
- capacitor microphone
- carbon microphone
- carbon-capsule microphone
- carbon-granule microphone
- cardioid microphone
- ceramic microphone
- clip-on microphone
- close-speaking microphone
- close-talking microphone
- combination microphone
- condenser microphone
- contact microphone
- crossed coincident microphones
- crystal microphone
- diaphragmless microphone
- differential microphone
- directional microphone
- distributed microphones
- double-button microphone
- double-element microphone
- dynamic microphone
- ear microphone
- electret microphone
- electronic microphone
- electrostatic microphone
- figure-of-eight microphone
- first-order gradient microphone
- flame microphone
- flat microphone
- flat-pressure-response microphone
- four-capsule microphone
- glow-discharge microphone
- gradient microphone
- granule microphone
- granule-type microphone
- gun microphone
- hand microphone
- hand-held microphone
- hot-wire microphone
- hypercardioid microphone
- inductive microphone
- inductor microphone
- integral microphone
- interference tube microphone
- ionic microphone
- laboratory standard microphone
- lanyard microphone
- lapel microphone
- lavalier microphone
- lens microphone
- line microphone
- lip microphone
- low-impedance microphone
- machine-gun microphone
- magnetic microphone
- magnetic-armature microphone
- magnetostriction microphone
- mask microphone
- measuring microphone
- metal-insulator-piezoelectric semiconductor transducer microphone
- midget microphone
- moving-coil microphone
- moving-conductor microphone
- moving-iron microphone
- multiple microphone
- music-pickup microphone
- narrow-angle microphone
- noise-canceling microphone
- nondirectional microphone
- n-th order gradient microphone
- omnidirectional microphone
- parabolic-reflector microphone
- phase-shift microphone
- piezoelectric microphone
- pistol grip microphone
- polydirectional microphone
- pre-emphasized microphone
- pressure microphone
- pressure-actuated ribbon microphone
- pressure-gradient microphone
- probe microphone
- push-pull microphone
- reflector microphone
- RF capacitor microphone
- ribbon microphone
- rifle microphone
- robust microphone
- speaker microphone
- standard microphone
- stereo microphone
- stereo microphones
- studio microphone
- subaqueous microphone
- supercardioid microphone
- superdirectional microphone
- talk-back microphone
- thermal microphone
- thermocouple microphone
- thermoelectric microphone
- throat microphone
- transistor microphone
- transistorized microphone
- unidirectional microphone
- variable-reluctance microphone
- velocity microphone
- wave-interference microphone
- wireless microphone
- zero-order gradient microphone -
4 microphone
- alloy microphone
- alloy-granule microphone
- ammonium-dihydrogen-phosphate microphone
- antinoise microphone
- astatic microphone
- band microphone
- barium-titanate microphone
- bidirectional microphone
- breast microphone
- breast-plate microphone
- built-in microphone
- button microphone
- capacitance microphone
- capacitor microphone
- carbon microphone
- carbon-capsule microphone
- carbon-granule microphone
- cardioid microphone
- ceramic microphone
- clip-on microphone
- close-speaking microphone
- close-talking microphone
- combination microphone
- condenser microphone
- contact microphone
- crossed coincident microphones
- crystal microphone
- diaphragmless microphone
- differential microphone
- directional microphone
- distributed microphones
- double-button microphone
- double-element microphone
- dynamic microphone
- ear microphone
- electret microphone
- electronic microphone
- electrostatic microphone
- figure-of-eight microphone
- first-order gradient microphone
- flame microphone
- flat microphone
- flat-pressure-response microphone
- four-capsule microphone
- glow-discharge microphone
- gradient microphone
- granule microphone
- granule-type microphone
- gun microphone
- hand microphone
- hand-held microphone
- hot-wire microphone
- hypercardioid microphone
- inductive microphone
- inductor microphone
- integral microphone
- interference tube microphone
- ionic microphone
- laboratory standard microphone
- lanyard microphone
- lapel microphone
- lavalier microphone
- lens microphone
- line microphone
- lip microphone
- low-impedance microphone
- machine-gun microphone
- magnetic microphone
- magnetic-armature microphone
- magnetostriction microphone
- mask microphone
- measuring microphone
- metal-insulator-piezoelectric semiconductor transducer microphone
- midget microphone
- moving-coil microphone
- moving-conductor microphone
- moving-iron microphone
- multiple microphone
- music-pickup microphone
- narrow-angle microphone
- noise-canceling microphone
- nondirectional microphone
- n-th order gradient microphone
- omnidirectional microphone
- parabolic-reflector microphone
- phase-shift microphone
- piezoelectric microphone
- pistol grip microphone
- polydirectional microphone
- pre-emphasized microphone
- pressure microphone
- pressure-actuated ribbon microphone
- pressure-gradient microphone
- probe microphone
- push-pull microphone
- reflector microphone
- RF capacitor microphone
- ribbon microphone
- rifle microphone
- robust microphone
- speaker microphone
- standard microphone
- stereo microphone
- stereo microphones
- studio microphone
- subaqueous microphone
- supercardioid microphone
- superdirectional microphone
- talk-back microphone
- thermal microphone
- thermocouple microphone
- thermoelectric microphone
- throat microphone
- transistor microphone
- transistorized microphone
- unidirectional microphone
- variable-reluctance microphone
- velocity microphone
- wave-interference microphone
- wireless microphone
- zero-order gradient microphoneThe New English-Russian Dictionary of Radio-electronics > microphone
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5 De Forest, Lee
SUBJECT AREA: Broadcasting, Electronics and information technology, Photography, film and optics, Recording, Telecommunications[br]b. 26 August 1873 Council Bluffs, Iowa, USAd. 30 June 1961 Hollywood, California, USA[br]American electrical engineer and inventor principally known for his invention of the Audion, or triode, vacuum tube; also a pioneer of sound in the cinema.[br]De Forest was born into the family of a Congregational minister that moved to Alabama in 1879 when the father became President of a college for African-Americans; this was a position that led to the family's social ostracism by the white community. By the time he was 13 years old, De Forest was already a keen mechanical inventor, and in 1893, rejecting his father's plan for him to become a clergyman, he entered the Sheffield Scientific School of Yale University. Following his first degree, he went on to study the propagation of electromagnetic waves, gaining a PhD in physics in 1899 for his thesis on the "Reflection of Hertzian Waves from the Ends of Parallel Wires", probably the first US thesis in the field of radio.He then joined the Western Electric Company in Chicago where he helped develop the infant technology of wireless, working his way up from a modest post in the production area to a position in the experimental laboratory. There, working alone after normal working hours, he developed a detector of electromagnetic waves based on an electrolytic device similar to that already invented by Fleming in England. Recognizing his talents, a number of financial backers enabled him to set up his own business in 1902 under the name of De Forest Wireless Telegraphy Company; he was soon demonstrating wireless telegraphy to interested parties and entering into competition with the American Marconi Company.Despite the failure of this company because of fraud by his partners, he continued his experiments; in 1907, by adding a third electrode, a wire mesh, between the anode and cathode of the thermionic diode invented by Fleming in 1904, he was able to produce the amplifying device now known as the triode valve and achieve a sensitivity of radio-signal reception much greater than possible with the passive carborundum and electrolytic detectors hitherto available. Patented under the name Audion, this new vacuum device was soon successfully used for experimental broadcasts of music and speech in New York and Paris. The invention of the Audion has been described as the beginning of the electronic era. Although much development work was required before its full potential was realized, the Audion opened the way to progress in all areas of sound transmission, recording and reproduction. The patent was challenged by Fleming and it was not until 1943 that De Forest's claim was finally recognized.Overcoming the near failure of his new company, the De Forest Radio Telephone Company, as well as unsuccessful charges of fraudulent promotion of the Audion, he continued to exploit the potential of his invention. By 1912 he had used transformer-coupling of several Audion stages to achieve high gain at radio frequencies, making long-distance communication a practical proposition, and had applied positive feedback from the Audion output anode to its input grid to realize a stable transmitter oscillator and modulator. These successes led to prolonged patent litigation with Edwin Armstrong and others, and he eventually sold the manufacturing rights, in retrospect often for a pittance.During the early 1920s De Forest began a fruitful association with T.W.Case, who for around ten years had been working to perfect a moving-picture sound system. De Forest claimed to have had an interest in sound films as early as 1900, and Case now began to supply him with photoelectric cells and primitive sound cameras. He eventually devised a variable-density sound-on-film system utilizing a glow-discharge modulator, the Photion. By 1926 De Forest's Phonofilm had been successfully demonstrated in over fifty theatres and this system became the basis of Movietone. Though his ideas were on the right lines, the technology was insufficiently developed and it was left to others to produce a system acceptable to the film industry. However, De Forest had played a key role in transforming the nature of the film industry; within a space of five years the production of silent films had all but ceased.In the following decade De Forest applied the Audion to the development of medical diathermy. Finally, after spending most of his working life as an independent inventor and entrepreneur, he worked for a time during the Second World War at the Bell Telephone Laboratories on military applications of electronics.[br]Principal Honours and DistinctionsInstitute of Electronic and Radio Engineers Medal of Honour 1922. President, Institute of Electronic and Radio Engineers 1930. Institute of Electrical and Electronics Engineers Edison Medal 1946.Bibliography1904, "Electrolytic detectors", Electrician 54:94 (describes the electrolytic detector). 1907, US patent no. 841,387 (the Audion).1950, Father of Radio, Chicago: WIlcox \& Follett (autobiography).De Forest gave his own account of the development of his sound-on-film system in a series of articles: 1923. "The Phonofilm", Transactions of the Society of Motion Picture Engineers 16 (May): 61–75; 1924. "Phonofilm progress", Transactions of the Society of Motion Picture Engineers 20:17–19; 1927, "Recent developments in the Phonofilm", Transactions of the Society of Motion Picture Engineers 27:64–76; 1941, "Pioneering in talking pictures", Journal of the Society of Motion Picture Engineers 36 (January): 41–9.Further ReadingG.Carneal, 1930, A Conqueror of Space (biography).I.Levine, 1964, Electronics Pioneer, Lee De Forest (biography).E.I.Sponable, 1947, "Historical development of sound films", Journal of the Society of Motion Picture Engineers 48 (April): 275–303 (an authoritative account of De Forest's sound-film work, by Case's assistant).W.R.McLaurin, 1949, Invention and Innovation in the Radio Industry.C.F.Booth, 1955, "Fleming and De Forest. An appreciation", in Thermionic Valves 1904– 1954, IEE.V.J.Phillips, 1980, Early Radio Detectors, London: Peter Peregrinus.KF / JW
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