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1 магнит
детали, притягиваемые магнитом — parts attractable by magnet
Русско-английский словарь по информационным технологиям > магнит
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2 rauta-ankkuriäänirasia
• induced-magnet cartridge -
3 магнит
м. magnetмагнит отталкивает … — a magnet repels …
магнит притягивает … — a magnet attracts …
магнит служит для создания магнитного потока в воздушном зазоре — a magnet establishes a magnetic flux in the air gap
естественный магнит — natural magnet; lodestone
природный магнит — natural magnet; lodestone
детали, притягиваемые магнитом — parts attractable by magnet
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4 возбуждающий магнит
детали, притягиваемые магнитом — parts attractable by magnet
Русско-английский военно-политический словарь > возбуждающий магнит
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5 тактовый магнит
детали, притягиваемые магнитом — parts attractable by magnet
Русско-английский военно-политический словарь > тактовый магнит
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6 креновый магнит
детали, притягиваемые магнитом — parts attractable by magnet
Русско-английский военно-политический словарь > креновый магнит
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7 головка звукоснимателя с подвижным магнитом
Household appliances: induced magnet, moving magnetУниверсальный русско-английский словарь > головка звукоснимателя с подвижным магнитом
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8 головка звукоснимателя ЭПУ с подвижным магнитом
Telecommunications: induced magnet, variable magneticУниверсальный русско-английский словарь > головка звукоснимателя ЭПУ с подвижным магнитом
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9 магнитная головка
1. magnetic headфотометрическая головка, головка фотометра — photometer head
2. headголовка и хвостик ; верхний и нижний обрезы — head and tail
зазор головки; зазор между головкой и носителем — head gap
Русско-английский большой базовый словарь > магнитная головка
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10 магнитная головка
фотометрическая головка, головка фотометра — photometer head
Русско-английский новый политехнический словарь > магнитная головка
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11 Walzenscheider
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12 Chevenard, Pierre Antoine Jean Sylvestre
SUBJECT AREA: Metallurgy[br]b. 31 December 1888 Thizy, Rhône, Franced. 15 August 1960 Fontenoy-aux-Roses, France[br]French metallurgist, inventor of the alloys Elinvar and Platinite and of the method of strengthening nickel-chromium alloys by a precipitate ofNi3Al which provided the basis of all later super-alloy development.[br]Soon after graduating from the Ecole des Mines at St-Etienne in 1910, Chevenard joined the Société de Commentry Fourchambault et Decazeville at their steelworks at Imphy, where he remained for the whole of his career. Imphy had for some years specialized in the production of nickel steels. From this venture emerged the first austenitic nickel-chromium steel, containing 6 per cent chromium and 22–4 per cent nickel and produced commercially in 1895. Most of the alloys required by Guillaume in his search for the low-expansion alloy Invar were made at Imphy. At the Imphy Research Laboratory, established in 1911, Chevenard conducted research into the development of specialized nickel-based alloys. His first success followed from an observation that some of the ferro-nickels were free from the low-temperature brittleness exhibited by conventional steels. To satisfy the technical requirements of Georges Claude, the French cryogenic pioneer, Chevenard was then able in 1912 to develop an alloy containing 55–60 per cent nickel, 1–3 per cent manganese and 0.2–0.4 per cent carbon. This was ductile down to −190°C, at which temperature carbon steel was very brittle.By 1916 Elinvar, a nickel-iron-chromium alloy with an elastic modulus that did not vary appreciably with changes in ambient temperature, had been identified. This found extensive use in horology and instrument manufacture, and even for the production of high-quality tuning forks. Another very popular alloy was Platinite, which had the same coefficient of thermal expansion as platinum and soda glass. It was used in considerable quantities by incandescent-lamp manufacturers for lead-in wires. Other materials developed by Chevenard at this stage to satisfy the requirements of the electrical industry included resistance alloys, base-metal thermocouple combinations, magnetically soft high-permeability alloys, and nickel-aluminium permanent magnet steels of very high coercivity which greatly improved the power and reliability of car magnetos. Thermostatic bimetals of all varieties soon became an important branch of manufacture at Imphy.During the remainder of his career at Imphy, Chevenard brilliantly elaborated the work on nickel-chromium-tungsten alloys to make stronger pressure vessels for the Haber and other chemical processes. Another famous alloy that he developed, ATV, contained 35 per cent nickel and 11 per cent chromium and was free from the problem of stress-induced cracking in steam that had hitherto inhibited the development of high-power steam turbines. Between 1912 and 1917, Chevenard recognized the harmful effects of traces of carbon on this type of alloy, and in the immediate postwar years he found efficient methods of scavenging the residual carbon by controlled additions of reactive metals. This led to the development of a range of stabilized austenitic stainless steels which were free from the problems of intercrystalline corrosion and weld decay that then caused so much difficulty to the manufacturers of chemical plant.Chevenard soon concluded that only the nickel-chromium system could provide a satisfactory basis for the subsequent development of high-temperature alloys. The first published reference to the strengthening of such materials by additions of aluminium and/or titanium occurs in his UK patent of 1929. This strengthening approach was adopted in the later wartime development in Britain of the Nimonic series of alloys, all of which depended for their high-temperature strength upon the precipitated compound Ni3Al.In 1936 he was studying the effect of what is now known as "thermal fatigue", which contributes to the eventual failure of both gas and steam turbines. He then published details of equipment for assessing the susceptibility of nickel-chromium alloys to this type of breakdown by a process of repeated quenching. Around this time he began to make systematic use of the thermo-gravimetrie balance for high-temperature oxidation studies.[br]Principal Honours and DistinctionsPresident, Société de Physique. Commandeur de la Légion d'honneur.Bibliography1929, Analyse dilatométrique des matériaux, with a preface be C.E.Guillaume, Paris: Dunod (still regarded as the definitive work on this subject).The Dictionary of Scientific Biography lists around thirty of his more important publications between 1914 and 1943.Further Reading"Chevenard, a great French metallurgist", 1960, Acier Fins (Spec.) 36:92–100.L.Valluz, 1961, "Notice sur les travaux de Pierre Chevenard, 1888–1960", Paris: Institut de France, Académie des Sciences.ASDBiographical history of technology > Chevenard, Pierre Antoine Jean Sylvestre
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13 Henry, Joseph
[br]b. 17 December 1797 Albany, New York, USAd. 13 May 1878 Washington, DC, USA[br]American scientist after whom the unit of inductance is named.[br]Sent to stay with relatives at the age of 6 because of the illness of his father, when the latter died in 1811 Henry was apprenticed to a silversmith and then turned to the stage. Whilst he was ill himself, a book on science fired his interest and he began studying at Albany Academy, working as a tutor to finance his studies. Initially intending to pursue medicine, he then spent some time as a surveyor before becoming Professor of Mathematics and Natural Philosophy at Albany Academy in 1826. There he became interested in the improvement of electromagnets and discovered that the use of an increased number of turns of wire round the core greatly increased their power; by 1831 he was able to supply to Yale a magnet capable of lifting almost a ton weight. During this time he also discovered the principles of magnetic induction and self-inductance. In the same year he made, but did not patent, a cable telegraph system capable of working over a distance of 1 mile (1.6 km). It was at this time, too, that he found that adiabatic expansion of gases led to their sudden cooling, thus paving the way for the development of refrigerators. For this he was recommended for, but never received, the Copley Medal of the Royal Society. Five years later he became Professor of Natural Philosophy at New Jersey College (later Princeton University), where he deduced the laws governing the operation of transformers and observed that changes in magnetic flux induced electric currents in conductors. Later he also observed that spark discharges caused electrical effects at a distance. He therefore came close to the discovery of radio waves. In 1836 he was granted a year's leave of absence and travelled to Europe, where he was able to meet Michael Faraday. It was with his help that in 1844 Samuel Morse set up the first patented electric telegraph, but, sadly, the latter seems to have reaped all the credit and financial rewards. In 1846 he became the first secretary of the Washington Smithsonian Institute and did much to develop government support for scientific research. As a result of his efforts some 500 telegraph stations across the country were equipped with meteorological equipment to supply weather information by telegraph to a central location, a facility that eventually became the US National Weather Bureau. From 1852 he was a member of the Lighthouse Board, contributing to improvements in lighting and sound warning systems and becoming its chairman in 1871. During the Civil War he was a technical advisor to President Lincoln. He was a founder of the National Academy of Science and served as its President for eleven years.[br]Principal Honours and DistinctionsPresident, American Association for the Advancement of Science 1849. President, National Academy of Science 1893–1904. In 1893, to honour his work on induction, the International Congress of Electricians adopted the henry as the unit of inductance.Bibliography1824. "On the chemical and mechanical effects of steam". 1825. "The production of cold by the rarefaction of air".1832, "On the production of currents \& sparks of electricity \& magnetism", AmericanJournal of Science 22:403."Theory of the so-called imponderables", Proceedings of the American Association for the Advancement of Science 6:84.Further ReadingSmithsonian Institution, 1886, Joseph Henry, Scientific Writings, Washington DC.KF -
14 тормозной момент интегрирующего прибора
тормозной момент интегрирующего прибора
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[IEV number 312-05-03]EN
braking torque (of an integrating instrument)
torque resulting from the interaction of the field of a fixed permanent magnet with the currents induced by it in the rotor of an integrating instrument and opposing its rotation
[IEV number 312-05-03]FR
couple de freinage (d'un appareil intégrateur)
couple provenant de l'interaction du champ d'un aimant permanent fixe avec les courants qu'il induit dans le rotor d'un appareil intégrateur et s'opposant à sa rotation
[IEV number 312-05-03]Тематики
- измерение электр. величин в целом
Синонимы
EN
DE
FR
Русско-английский словарь нормативно-технической терминологии > тормозной момент интегрирующего прибора
См. также в других словарях:
magnet — [mag′nit] n. [ME magnete < OFr < L magnes (gen. magnetis) < Gr Magnētis (lithos), (stone) of MAGNESIA] 1. any piece of certain kinds of material, as iron, that has the property of attracting like material: this property may be permanent… … English World dictionary
magnet — /mag nit/, n. 1. a body, as a piece of iron or steel, that possesses the property of attracting certain substances, as iron. 2. a lodestone. 3. a thing or person that attracts: The park was a magnet for pickpockets and muggers. [1400 50; late ME… … Universalium
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Moving magnet and conductor problem — Conductor moving in a magnetic field. The moving magnet and conductor problem is a famous thought experiment, originating in the 19th century, concerning the intersection of classical electromagnetism and special relativity. In it, the current in … Wikipedia
Electron beam induced deposition — (EBID) is a process of decomposing gaseous molecules by electron beam leading to deposition of non volatile fragments onto a nearby substrate. Process Focused electron beam of scanning electron microscope (SEM) or scanning transmission electron… … Wikipedia
Stop action magnet — The stop action magnet, usually abbreviated to SAM, is an electromagnetic device used for the control of pipe organs and virtual pipe organs, and forms part of the organ s combination action. On a classical organ the device may be referred to as… … Wikipedia
A direct induced current — Direct current Direct current (Elec.) (a) A current flowing in one direction only; distinguished from {alternating current}. When steady and not pulsating a direct current is often called a {continuous current}. (b) {A direct induced current}, or … The Collaborative International Dictionary of English
Magnetic cartridge — An Audio Technica AT F3 MC cartridge A magnetic cartridge is a transducer used for the playback of gramophone records on a turntable or phonograph. It converts mechanical vibrational energy from a stylus riding in a spiral record groove into an… … Wikipedia
Peter of Maricourt — (Peter Peregrinus of Maricourt; [Edward Grant, “Peter Peregrinus,” Dictionary of Scientific Biography (New York: Scribners, 1975), 10: 532. Ron B. Thomson, “Peter Peregrinus,” Medieval Science, Technology and Medicine. An Encyclopedia , ed.… … Wikipedia
magnetic induction — magnet′ic induc′tion n. 1) elm phs Also called magnet′ic flux′ den sity. a vector quantity used as a measure of the strength of a magnetic field Symbol: B 2) phs elm magnetization induced by proximity to a magnetic field … From formal English to slang
magnetic storm — magnet′ic storm′ n. mer a disturbance of the earth s magnetic field induced by radiation and streams of charged particles from the sun … From formal English to slang
