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1 потенциальная установка
Geophysics: normal array, normal electrode systemУниверсальный русско-английский словарь > потенциальная установка
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2 каротажный потенциал-зонд
* * *normal electrode configuration, normal resistivity device, normal formation-resistivity measuring systemРусско-английский словарь по нефти и газу > каротажный потенциал-зонд
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3 каротажный потенциал-зонд
1) Engineering: normal configuration, normal electrode configuration, normal resistivity device3) Oil&Gas technology normal resistivity sonde4) Makarov: normalУниверсальный русско-английский словарь > каротажный потенциал-зонд
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4 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 -
5 для того, чтобы
•More extensive research is necessary before the significance of these findings can be understood.
•Something more is needed if we are to understand how the Earth came to possess its core of iron.
•A population inversion must be produced if laser action is to occur.
•To ensure that... remain constant, the electrode solution is usually a buffer.
•Careful maintenance is essential if the machine is to give service and reliability of which it is capable.
•All components must be accurately aligned in order that the pellet ( should) be impacted symmetrically.
•In order that falls to 0.99 g, y must be 20 miles.
•So that the worm and roller will continue to mesh, the contour of the underside of the worm gear is an arc with...
•The rod should be made of mild steel so that it will bend easily.
•For the laser approach to succeed the fuel must be compressed to 10,000 times normal liquid density.
•In order for the switching system to work properly, the operations of the system must be synchronized.
Русско-английский научно-технический словарь переводчика > для того, чтобы
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6 для того, чтобы
•More extensive research is necessary before the significance of these findings can be understood.
•Something more is needed if we are to understand how the Earth came to possess its core of iron.
•A population inversion must be produced if laser action is to occur.
•To ensure that... remain constant, the electrode solution is usually a buffer.
•Careful maintenance is essential if the machine is to give service and reliability of which it is capable.
•All components must be accurately aligned in order that the pellet ( should) be impacted symmetrically.
•In order that falls to 0.99 g, y must be 20 miles.
•So that the worm and roller will continue to mesh, the contour of the underside of the worm gear is an arc with...
•The rod should be made of mild steel so that it will bend easily.
•For the laser approach to succeed the fuel must be compressed to 10,000 times normal liquid density.
•In order for the switching system to work properly, the operations of the system must be synchronized.
Русско-английский научно-технический словарь переводчика > для того, чтобы
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7 если
•This term is useful, however, as long as the complexities involved are kept in mind.
•Once the surface of normal velocity has been obtained, the wave front may be easily constructed.
•The coke recovered in this operation is of electrode grade if produced from low-ash content feedstock.
•All these jugs are housed in wooden boxes to catch fragments in the event that atmospheric pressure shatters the glass.
•Such materials are satisfactory provided ( that) they do not form corrosive chlorides.
•Should the presence of cast iron escape the first examination it may then be detected and any adjustment necessary can be made on the spot.
* * *Если -- if; should; providing, provided; in the event, as long as; as, when. При переводе некоторых русских оборотов опускается (см. например, "Если говорить более конкретно", "Если говорить вкратце", "Если не принимать во внимание", "Если не считать этого обстоятельства", "Если подходить к этому вопросу реалистически")If these restrictions are satisfied, bubble-ring cavitation will definitely occur.Should a particular frequency response exhibit significant scatter, it generally reveals the presence of a nonlinearity in the sensing system.The vacuum shell acts as the lateral support for the toroidal field magnets in the event perturbations should develop in the toroidal fields from a fault condition.It can be shown that the minimum of W occurs at a value of rc greater than п as long as t0 ® Ґ.— если смотреть наРусско-английский научно-технический словарь переводчика > если
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