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1 first oscillation
Автоматика: основное колебание -
2 first oscillation
English-Russian dictionary of mechanical engineering and automation > first oscillation
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3 first oscillation
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4 first oscillation
English-Russian dictionary of machine parts > first oscillation
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5 oscillation
1) колебание; колебания; вибрация; качание2) генерация•- antiphase oscillation
- constrained oscillations
- continuous oscillation
- continuous oscillations
- coupled oscillations
- damped oscillation
- damped oscillations
- decaying oscillation
- decaying oscillations
- dying oscillation
- dying oscillations
- first oscillation
- forced oscillation
- free laser oscillation
- free oscillations
- harmonic oscillation
- increasing oscillation
- in-phase oscillations
- latent oscillation
- latent oscillations
- lateral oscillation
- lateral oscillations
- longitudinal oscillations
- mechanical oscillation
- natural oscillation
- natural oscillations
- periodic oscillation
- quasi-periodic oscillation
- see-sawing oscillation
- self-excited oscillation
- self-sustained oscillation
- sound oscillations
- steady oscillation
- subresonance oscillation
- superresonance oscillation
- sustained oscillation
- synchronous oscillation
- torsional oscillation
- transient oscillations
- transverse oscillation
- uncoupled oscillations
- undamped oscillation
- undamped oscillations
- unstable oscillationEnglish-Russian dictionary of mechanical engineering and automation > oscillation
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6 oscillation
колебательное движение; колебание; тряска; качание; вибрация; вибрирование; осцилляция; генерация- oscillation counter - oscillation frequency - oscillation period - suppress parasitic oscillations - first oscillation - longitudinal oscillations - natural oscillations - parasitic oscillations - pendular oscillations - relaxation oscillations - sound oscillations - torsional oscillations - self-excited oscillations - undamped oscillations -
7 first harmonic oscillation
Строительство: основное колебание, первая гармоникаУниверсальный англо-русский словарь > first harmonic oscillation
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8 first-type oscillation mode
Телекоммуникации: режим колебаний первого родаУниверсальный англо-русский словарь > first-type oscillation mode
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9 first-type oscillation mode
English-Russian dictionary of telecommunications and their abbreviations > first-type oscillation mode
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10 основное колебание
Русско-английский исловарь по машиностроению и автоматизации производства > основное колебание
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11 основное колебание
1) Naval: fundamental oscillation2) Construction: first harmonic oscillation3) Mechanics: base oscillation4) Automation: first oscillation5) Makarov: fundamental, principal vibrationУниверсальный русско-английский словарь > основное колебание
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12 генерация
ж.1) (создание, образование) generation, production2) ( действие генератора) oscillation3) ( в лазере) lasing, laser action4) ( в мазере) masing, maser action5) ( поколение) generation•генерация наступает при соблюдении следующих условий — oscillation sets in when the following conditions are satisfied
- аэродинамическая генерация звукасрывать генерацию — quench oscillation, kill oscillation
- вторичная генерация
- генерация блоховских линий
- генерация второй гармоники
- генерация гармоник
- генерация звёзд
- генерация звука лазерным излучением
- генерация звука лазерными импульсами
- генерация звука
- генерация импульсов
- генерация магнитного поля
- генерация минералов
- генерация монохроматического излучения
- генерация на двух частотах
- генерация на нескольких частотах
- генерация на самоограниченных переходах
- генерация нейтронов космическими лучами
- генерация нейтронов
- генерация неравновесных носителей
- генерация носителей в обеднённой области
- генерация носителей заряда
- генерация пара
- генерация поверхностных акустических волн
- генерация поля за счёт кинетической энергии электронов
- генерация продольного тока при быстром нагреве плазмы
- генерация продольного тока пучком быстрых частиц
- генерация разностной частоты
- генерация рэлеевской волны
- генерация сверхсильных магнитных полей при сжатии плазмы лайнером
- генерация составной частоты
- генерация структур
- генерация суммарной частоты
- генерация тока на оси стелларатора с широм
- генерация тороидального тока волнами
- генерация третьей гармоники
- генерация ультразвука
- генерация ЦМД
- генерация чётной гармоники
- генерация шума
- генерация электронно-дырочных пар
- двухмодовая генерация
- джозефсоновская генерация
- импульсная генерация
- индуктивная генерация звука
- комбинационная генерация
- лазерная генерация гиперзвука
- лазерная генерация звука
- лазерная генерация при комнатной температуре
- лазерная генерация
- лазерная термооптическая генерация звука
- мазерная генерация
- многомодовая генерация
- многочастотная генерация
- непрерывная генерация
- одномодовая генерация
- однонаправленная генерация
- одночастотная генерация
- оптическая генерация звука
- оптическая генерация
- оптоакустическая генерация звука
- паразитная генерация
- параметрическая генерация света
- параметрическая генерация
- пичковая генерация
- послеимпульсная генерация
- прямая генерация пара
- самоограниченная генерация
- синхронная генерация третьей гармоники
- синхронная генерация
- слышимая генерация
- стационарная генерация
- тепловая генерация
- термическая генерация звука
- термооптическая генерация звука
- фоновая генерация
- четырёхволновая параметрическая генерация -
13 Huygens, Christiaan
SUBJECT AREA: Horology[br]b. 14 April 1629 The Hague, the Netherlandsd. 8 June 1695 The Hague, the Netherlands[br]Dutch scientist who was responsible for two of the greatest advances in horology: the successful application of both the pendulum to the clock and the balance spring to the watch.[br]Huygens was born into a cultured and privileged class. His father, Constantijn, was a poet and statesman who had wide interests. Constantijn exerted a strong influence on his son, who was educated at home until he reached the age of 16. Christiaan studied law and mathematics at Ley den University from 1645 to 1647, and continued his studies at the Collegium Arausiacum in Breda until 1649. He then lived at The Hague, where he had the means to devote his time entirely to study. In 1666 he became a Member of the Académie des Sciences in Paris and settled there until his return to The Hague in 1681. He also had a close relationship with the Royal Society and visited London on three occasions, meeting Newton on his last visit in 1689. Huygens had a wide range of interests and made significant contributions in mathematics, astronomy, optics and mechanics. He also made technical advances in optical instruments and horology.Despite the efforts of Burgi there had been no significant improvement in the performance of ordinary clocks and watches from their inception to Huygens's time, as they were controlled by foliots or balances which had no natural period of oscillation. The pendulum appeared to offer a means of improvement as it had a natural period of oscillation that was almost independent of amplitude. Galileo Galilei had already pioneered the use of a freely suspended pendulum for timing events, but it was by no means obvious how it could be kept swinging and used to control a clock. Towards the end of his life Galileo described such a. mechanism to his son Vincenzio, who constructed a model after his father's death, although it was not completed when he himself died in 1642. This model appears to have been copied in Italy, but it had little influence on horology, partly because of the circumstances in which it was produced and possibly also because it differed radically from clocks of that period. The crucial event occurred on Christmas Day 1656 when Huygens, quite independently, succeeded in adapting an existing spring-driven table clock so that it was not only controlled by a pendulum but also kept it swinging. In the following year he was granted a privilege or patent for this clock, and several were made by the clockmaker Salomon Coster of The Hague. The use of the pendulum produced a dramatic improvement in timekeeping, reducing the daily error from minutes to seconds, but Huygens was aware that the pendulum was not truly isochronous. This error was magnified by the use of the existing verge escapement, which made the pendulum swing through a large arc. He overcame this defect very elegantly by fitting cheeks at the pendulum suspension point, progressively reducing the effective length of the pendulum as the amplitude increased. Initially the cheeks were shaped empirically, but he was later able to show that they should have a cycloidal shape. The cheeks were not adopted universally because they introduced other defects, and the problem was eventually solved more prosaically by way of new escapements which reduced the swing of the pendulum. Huygens's clocks had another innovatory feature: maintaining power, which kept the clock going while it was being wound.Pendulums could not be used for portable timepieces, which continued to use balances despite their deficiencies. Robert Hooke was probably the first to apply a spring to the balance, but his efforts were not successful. From his work on the pendulum Huygens was well aware of the conditions necessary for isochronism in a vibrating system, and in January 1675, with a flash of inspiration, he realized that this could be achieved by controlling the oscillations of the balance with a spiral spring, an arrangement that is still used in mechanical watches. The first model was made for Huygens in Paris by the clockmaker Isaac Thuret, who attempted to appropriate the invention and patent it himself. Huygens had for many years been trying unsuccessfully to adapt the pendulum clock for use at sea (in order to determine longitude), and he hoped that a balance-spring timekeeper might be better suited for this purpose. However, he was disillusioned as its timekeeping proved to be much more susceptible to changes in temperature than that of the pendulum clock.[br]Principal Honours and DistinctionsFRS 1663. Member of the Académie Royale des Sciences 1666.BibliographyFor his complete works, see Oeuvres complètes de Christian Huygens, 1888–1950, 22 vols, The Hague.1658, Horologium, The Hague; repub., 1970, trans. E.L.Edwardes, AntiquarianHorology 7:35–55 (describes the pendulum clock).1673, Horologium Oscillatorium, Paris; repub., 1986, The Pendulum Clock or Demonstrations Concerning the Motion ofPendula as Applied to Clocks, trans.R.J.Blackwell, Ames.The balance spring watch was first described in Journal des Sçavans 25 February 1675, and translated in Philosophical Transactions of the Royal Society (1675) 4:272–3.Further ReadingH.J.M.Bos, 1972, Dictionary of Scientific Biography, ed. C.C.Gillispie, Vol. 6, New York, pp. 597–613 (for a fuller account of his life and scientific work, but note the incorrect date of his death).R.Plomp, 1979, Spring-Driven Dutch Pendulum Clocks, 1657–1710, Schiedam (describes Huygens's application of the pendulum to the clock).S.A.Bedini, 1991, The Pulse of Time, Florence (describes Galileo's contribution of the pendulum to the clock).J.H.Leopold, 1982, "L"Invention par Christiaan Huygens du ressort spiral réglant pour les montres', Huygens et la France, Paris, pp. 154–7 (describes the application of the balance spring to the watch).A.R.Hall, 1978, "Horology and criticism", Studia Copernica 16:261–81 (discusses Hooke's contribution).DV -
14 mode
1) режим2) состояние3) мода, тип ( волны)•- acoustic mode
- active mode
- adaptive mode
- alternate mode
- ANS/FAX mode
- answering mode
- assemble mode
- asymmetrical mode
- asynchronous balanced mode
- asynchronous transfer mode
- authorized reception mode
- auto document mode
- autoinformer mode
- automatic mode
- automatic reception mode
- auto-night mode
- backup mode
- basic control mode
- biharmonical mode
- bound mode
- buffer mode
- byte mode
- center mark mode
- channel mode
- circuit-transfer mode
- cladding mode
- client-server mode
- coasting mode
- combined mode
- command mode
- common mode
- communication mode
- confidential mode
- continuous emission mode
- continuous mode
- conversational mode
- correction mode
- coupled modes
- cutoff mode
- data mode
- data-processing mode
- day/night mode
- delayed ARM mode
- DEMO mode
- detail mode
- detection mode
- direct sending mode
- display mode
- dual mode
- duplex mode
- erase mode
- evanescent mode
- executive mode
- expansion modes
- external synchronization mode
- Fax mode
- fine mode
- first-type oscillation mode
- forced mode
- frame mode
- fundamental mode
- generator mode
- ghost mode
- group mode
- guard mode
- half-duplex mode
- half-speed mode
- half-tone mode
- hierarchical mode
- high-power mode
- holding mode
- hollow-beam mode
- home-only mode
- hybrid mode
- idling mode
- instant ARM mode
- internal synchronization mode
- interrupt mode
- interruptible current mode
- inversed mode
- key mode
- landscape mode
- leaky mode
- light-tensioned mode
- limiting mode
- linear mode
- line-art mode
- line-hold mode
- line-holding mode
- listening mode
- local mode
- lock mode
- long-distance mode
- long-play mode
- long-time mode
- loudly mode
- low signal mode
- lugdown mode
- macroblock mode
- magnetostatic mode
- manual mode
- master mode
- matched operation mode
- matching mode
- memory lock mode
- minimal mode
- mode of behavior
- modulated mode
- monitor mode
- mono mode
- multicopy mode
- multiplex mode
- multipoint mode
- multisort document reception mode
- net mode
- nonpublic mode
- nontransparent mode
- normal mode
- off mode
- off-normal mode
- on-line mode
- on-link mode
- open-phase mode
- operating mode
- orthonormal modes
- overseas mode
- overtensioned mode
- parallel mode
- part load mode
- partial load mode
- peak mode
- periodic mode
- phone-only mode
- photo mode
- photodiode mode
- photogalvanic mode
- phototransistor mode
- pilot mode
- playback mode
- polling reception mode
- polling standby mode
- polling-transmission mode
- portrait mode
- potential mode
- precritical mode
- prediction mode
- printer mode
- private mode
- propagation mode
- pulsed mode
- quasi-cyclic mode
- quasi-key mode
- quick-record mode
- radiation mode
- rated power mode
- real-time mode
- receive mode
- recursive short-time mode
- redial mode
- remote-receiving mode
- rental mode
- rest mode
- reversing mode
- running-wave mode
- sample-and-hold mode
- saturation mode
- save dial mode
- scan mode
- second-type oscillation mode
- self-exciting oscillation mode
- self-oscillating mode
- send later mode
- sequential lossless mode
- serial mode
- series mode
- servicing mode
- setup mode
- shared fax mode
- short-time mode
- silence detection mode
- silently mode
- sleep mode
- soft self-exciting mode
- soft-control mode
- soft-controlling mode
- sound mode
- special scanning mode
- standard mode
- standby mode
- standing wave mode
- start mode
- starting mode
- start-stop mode
- stereo mode
- stop mode
- storage mode
- substitute reception mode
- superfine mode
- switching mode
- symmetrical mode
- synchronous-transfer mode
- synchronous-transmission mode
- TEL mode
- TEL/FAX mode
- telegraph mode
- telephone mode
- tensioned mode
- transfer mode
- transmission dead-line mode
- transmission mode
- transverse electric-and-magnetic mode
- transverse magnetic mode
- transverse-electric mode
- traveling wave mode
- triggering mode
- tuning mode
- uncoupled modes
- undertensioned mode
- unlock mode
- unstable mode
- valve mode
- vibrating mode
- voice-call mode
- waiting mode
- winding mode
- wireless-access mode
- XX modeEnglish-Russian dictionary of telecommunications and their abbreviations > mode
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15 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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16 первая гармоника
1) Engineering: actual frequency, first harmonic, fundamental, fundamental harmonic2) Construction: first harmonic oscillation3) Makarov: fundamental component -
17 erste Harmonische
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18 Grundschwingung
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19 Graham, George
SUBJECT AREA: Horology[br]b. c.1674 Cumberland, Englandd. 16 November 1751 London, England[br]English watch-and clockmaker who invented the cylinder escapement for watches, the first successful dead-beat escapement for clocks and the mercury compensation pendulum.[br]Graham's father died soon after his birth, so he was raised by his brother. In 1688 he was apprenticed to the London clockmaker Henry Aske, and in 1695 he gained his freedom. He was employed as a journeyman by Tompion in 1696 and later married his niece. In 1711 he formed a partnership with Tompion and effectively ran the business in Tompion's declining years; he took over the business after Tompion died in 1713. In addition to his horological interests he also made scientific instruments, specializing in those for astronomical use. As a person, he was well respected and appears to have lived up to the epithet "Honest George Graham". He befriended John Harrison when he first went to London and lent him money to further his researches at a time when they might have conflicted with his own interests.The two common forms of escapement in use in Graham's time, the anchor escapement for clocks and the verge escapement for watches, shared the same weakness: they interfered severely with the free oscillation of the pendulum and the balance, and thus adversely affected the timekeeping. Tompion's two frictional rest escapements, the dead-beat for clocks and the horizontal for watches, had provided a partial solution by eliminating recoil (the momentary reversal of the motion of the timepiece), but they had not been successful in practice. Around 1720 Graham produced his own much improved version of the dead-beat escapement which became a standard feature of regulator clocks, at least in Britain, until its supremacy was challenged at the end of the nineteenth century by the superior accuracy of the Riefler clock. Another feature of the regulator clock owed to Graham was the mercury compensation pendulum, which he invented in 1722 and published four years later. The bob of this pendulum contained mercury, the surface of which rose or fell with changes in temperature, compensating for the concomitant variation in the length of the pendulum rod. Graham devised his mercury pendulum after he had failed to achieve compensation by means of the difference in expansion between various metals. He then turned his attention to improving Tompion's horizontal escapement, and by 1725 the cylinder escapement existed in what was virtually its final form. From the following year he fitted this escapement to all his watches, and it was also used extensively by London makers for their precision watches. It proved to be somewhat lacking in durability, but this problem was overcome later in the century by using a ruby cylinder, notably by Abraham Louis Breguet. It was revived, in a cheaper form, by the Swiss and the French in the nineteenth century and was produced in vast quantities.[br]Principal Honours and DistinctionsFRS 1720. Master of the Clockmakers' Company 1722.BibliographyGraham contributed many papers to the Philosophical Transactions of the Royal Society, in particular "A contrivance to avoid the irregularities in a clock's motion occasion'd by the action of heat and cold upon the rod of the pendulum" (1726) 34:40–4.Further ReadingBritten's Watch \& Clock Maker's Handbook Dictionary and Guide, 1978, rev. Richard Good, 16th edn, London, pp. 81, 84, 232 (for a technical description of the dead-beat and cylinder escapements and the mercury compensation pendulum).A.J.Turner, 1972, "The introduction of the dead-beat escapement: a new document", Antiquarian Horology 8:71.E.A.Battison, 1972, biography, Biographical Dictionary of Science, ed. C.C.Gillespie, Vol. V, New York, 490–2 (contains a résumé of Graham's non-horological activities).DV -
20 Herbert, Edward Geisler
[br]b. 23 March 1869 Dedham, near Colchester, Essex, Englandd. 9 February 1938 West Didsbury, Manchester, England[br]English engineer, inventor of the Rapidor saw and the Pendulum Hardness Tester, and pioneer of cutting tool research.[br]Edward Geisler Herbert was educated at Nottingham High School in 1876–87, and at University College, London, in 1887–90, graduating with a BSc in Physics in 1889 and remaining for a further year to take an engineering course. He began his career as a premium apprentice at the Nottingham works of Messrs James Hill \& Co, manufacturers of lace machinery. In 1892 he became a partner with Charles Richardson in the firm of Richardson \& Herbert, electrical engineers in Manchester, and when this partnership was dissolved in 1895 he carried on the business in his own name and began to produce machine tools. He remained as Managing Director of this firm, reconstituted in 1902 as a limited liability company styled Edward G.Herbert Ltd, until his retirement in 1928. He was joined by Charles Fletcher (1868–1930), who as joint Managing Director contributed greatly to the commercial success of the firm, which specialized in the manufacture of small machine tools and testing machinery.Around 1900 Herbert had discovered that hacksaw machines cut very much quicker when only a few teeth are in operation, and in 1902 he patented a machine which utilized this concept by automatically changing the angle of incidence of the blade as cutting proceeded. These saws were commercially successful, but by 1912, when his original patents were approaching expiry, Herbert and Fletcher began to develop improved methods of applying the rapid-saw concept. From this work the well-known Rapidor and Manchester saws emerged soon after the First World War. A file-testing machine invented by Herbert before the war made an autographic record of the life and performance of the file and brought him into close contact with the file and tool steel manufacturers of Sheffield. A tool-steel testing machine, working like a lathe, was introduced when high-speed steel had just come into general use, and Herbert became a prominent member of the Cutting Tools Research Committee of the Institution of Mechanical Engineers in 1919, carrying out many investigations for that body and compiling four of its Reports published between 1927 and 1933. He was the first to conceive the idea of the "tool-work" thermocouple which allowed cutting tool temperatures to be accurately measured. For this advance he was awarded the Thomas Hawksley Gold Medal of the Institution in 1926.His best-known invention was the Pendulum Hardness Tester, introduced in 1923. This used a spherical indentor, which was rolled over, rather than being pushed into, the surface being examined, by a small, heavy, inverted pendulum. The period of oscillation of this pendulum provided a sensitive measurement of the specimen's hardness. Following this work Herbert introduced his "Cloudburst" surface hardening process, in which hardened steel engineering components were bombarded by steel balls moving at random in all directions at very high velocities like gaseous molecules. This treatment superhardened the surface of the components, improved their resistance to abrasion, and revealed any surface defects. After bombardment the hardness of the superficially hardened layers increased slowly and spontaneously by a room-temperature ageing process. After his retirement in 1928 Herbert devoted himself to a detailed study of the influence of intense magnetic fields on the hardening of steels.Herbert was a member of several learned societies, including the Manchester Association of Engineers, the Institute of Metals, the American Society of Mechanical Engineers and the Institution of Mechanical Engineers. He retained a seat on the Board of his company from his retirement until the end of his life.[br]Principal Honours and DistinctionsManchester Association of Engineers Butterworth Gold Medal 1923. Institution of Mechanical Engineers Thomas Hawksley Gold Medal 1926.BibliographyE.G.Herbert obtained several British and American patents and was the author of many papers, which are listed in T.M.Herbert (ed.), 1939, "The inventions of Edward Geisler Herbert: an autobiographical note", Proceedings of the Institution of Mechanical Engineers 141: 59–67.ASD / RTSBiographical history of technology > Herbert, Edward Geisler
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Piora Oscillation — The Piora Oscillation was an abrupt cold and wet period in the climate history of the Holocene Epoch; it is generally dated to the period of c. 3200 to 2900 BCE. [ [http://www.news about space.org/story/2409.html Space and Earth Science News… … Wikipedia
Atlantic Multidecadal Oscillation — The Atlantic multidecadal oscillation (AMO) is a mode of natural variability occurring in the North Atlantic Ocean and which has its principle expression in the sea surface temperature (SST) field. While there is some support for this mode in… … Wikipedia
El Niño-Southern Oscillation — El Niño redirects here. For other uses, see El Niño (disambiguation). ENSO redirects here. For other uses, see Enso (disambiguation). The 1997 El Niño observed by TOPEX/Poseidon. The white areas off the tropical coasts of South and North America… … Wikipedia
Bounded mean oscillation — In harmonic analysis, a function of bounded mean oscillation, also known as a BMO function, is a real valued function whose mean oscillation is bounded (finite). The space of functions of bounded mean oscillation (BMO), is a function space that,… … Wikipedia
North Pacific Oscillation — The NPO pattern. The North Pacific Oscillation (NPO) is a teleconnection pattern first described by Walker and Bliss[1] and characterized by a north south seesaw in sea level pressure over the North Pacific. Rogers, using surface atmospheric… … Wikipedia
Neural oscillation — is rhythmic or repetitive neural activity in the central nervous system. Neural tissue can generate oscillatory activity in many ways, driven either by mechanisms localized within individual neurons or by interactions between neurons. In… … Wikipedia
