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frequency principle

  • 1 частотный принцип

    Russian-English dictionary of telecommunications > частотный принцип

  • 2 частотный принцип

    Telecommunications: frequency principle

    Универсальный русско-английский словарь > частотный принцип

  • 3 Armstrong, Edwin Howard

    [br]
    b. 18 December 1890 New York City, New York, USA
    d. 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 Distinctions
    Institution of Radio Engineers Medal of Honour 1917. Franklin Medal 1937. IERE Edison Medal 1942. American Medal for Merit 1947.
    Bibliography
    1922, "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 Reading
    L.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).
    KF

    Biographical history of technology > Armstrong, Edwin Howard

  • 4 ley

    f.
    law (norma, precepto).
    de buena ley reliable, sterling
    ley marcial martial law
    ley de la oferta y la demanda law of supply and demand
    la ley de la selva the law of the jungle
    * * *
    1 (gen) law; (proyecto de ley) bill, act; (regla) rule
    2 (de metal) purity
    \
    aprobar una ley to pass a bill
    de ley (oro) pure 2 (plata) sterling 3 (persona) genuine
    ¡es ley de vida! that's life!, that's the way the cookie crumbles!
    estar fuera de la ley to be outside the law
    hecha la ley, hecha la trampa whatever the law, there's always a loophole, laws are made to be broken
    por ley by law
    la ley del más fuerte the law of the jungle
    ley del embudo double standards plural
    ley marcial martial law
    ley orgánica constitutional law
    ley sálica Salic law
    ley seca prohibition law
    * * *
    noun f.
    1) law
    * * *
    SF
    1) (=precepto) law

    aprobar o votar una ley — to pass a law

    de acuerdo con la ley, según la ley — in accordance with the law, by law, in law

    con todas las de la ley —

    va a protestar, y con todas las de la ley — he's going to complain and rightly so

    ley de fugas, se le aplicó la ley de fugas — he was shot while trying to escape

    2) (=regla no escrita) law

    ley de la calle — mob law, lynch law

    ley del Talión — ( Hist) lex talionis; (fig) (principle of) an eye for an eye and a tooth for a tooth

    3) (=principio científico) law

    ley natural — (Fís) law of nature; (Ética) natural law

    4) (Dep) rule, law
    5) (Rel)

    la ley de Dios — the rule of God, God's law

    6) (Metal)

    oro de ley — pure gold, standard gold

    7) † (=lealtad) loyalty, devotion

    tener/tomar ley a algn — to be/become devoted to sb

    * * *

    es ley de vida — it is a fact of life

    hacerle la ley del hielo a alguien — (Chi, Méx) to give somebody the cold shoulder

    la ley de la selva or de la jungla — the law of the jungle

    la ley del mínimo esfuerzo — the line of least resistance

    morir en su ley — (Andes) to die as one lived

    ley pareja no es dura — (CS) a rule isn't unfair if it applies to everyone

    2) ( justicia)

    con todas las de la ley: ganó con todas las de la ley she won very deservedly; una comida con todas las de la ley a proper meal; una democracia con todas las de la ley — a fully-fledged democracy

    4) (de oro, plata) assay value
    * * *
    = bill, law, legislative enactment, act.
    Ex. The conference debated a library bill which aims to set up public libraries in all municipalities with over 30,000 inhabitants.
    Ex. A catalogue code is a systematic arrangement of laws and statutes so as to avoid inconsistency and duplication in catalogues.
    Ex. Apply this rule to legislative enactments and decrees of a political jurisdiction and decrees of a chief executive having the force of law.
    Ex. This act allowed for the establishment of town libraries, which were free and open to all ratepayers and provided by funds from local rates.
    ----
    * acatar la ley = follow + the law.
    * acatar las leyes = keep on + the right side of the law.
    * al borde de la ley = on the edge of the law.
    * al margen de la ley = extra-judicial.
    * ante la ley = at law.
    * anteproyecto de ley = draft of legislation, draft bill.
    * aprobar una ley = pass + law, pass + legislation, pass + bill.
    * ausencia de ley = anomie.
    * autoridad sancionadora de ley = enactor of law.
    * castigar con todo el peso de la ley = punish + to the full extent of the law.
    * confección de leyes = law-making [lawmaking/law making].
    * con todas las de la ley = full-bodied, full-fledged, full-scale.
    * con todo el peso de la ley = to the full extent of the law.
    * contravenir la ley = contravene + the law, break + the law.
    * contravenir una ley = be in breach of + law.
    * creación de leyes = rulemaking [rule-making].
    * creador de leyes = rule-maker [rulemaker].
    * cumplidor de las leyes = law abiding.
    * cumplir la ley = observe + the law.
    * de acuerdo con la ley = according to law.
    * de ley = kosher.
    * dentro de la ley = within the law.
    * elaboración de leyes = rulemaking [rule-making].
    * espíritu de la ley, el = spirit of the law, the.
    * formulación de leyes = rulemaking [rule-making].
    * hacer cumplir la ley = law enforcement, enforce + law, legal enforcement.
    * hacer las leyes más estrictas = tighten + laws.
    * infractor de la ley = scofflaw.
    * infringir la ley = break + the law.
    * infringir una ley = infringe + law, violate + law, breach + law, be in breach of + law.
    * interpretar la ley = interpret + the law.
    * interpretar la ley según le convenga mejor a Uno = bend + the rules to suit + Posesivo + own purposes, bend + the rules, circumvent + rules.
    * ir en contra de la ley = be against the law.
    * legislación por decreto ley = delegated legislation.
    * ley antigua = ancient law.
    * ley antiterrorista = terrorism act.
    * ley consuetudinaria = customary law.
    * ley cósmica = cosmic law.
    * ley de bibliotecas = library law.
    * ley de bibliotecas, la = library act, the.
    * ley de copyright = copyright law.
    * ley de derechos de autor = copyright law.
    * ley de dispersión = law of scattering.
    * Ley de Dispersión de Bradford = Bradford's distribution law, Bradford's Law of Scatter, Bradford's Law of Scattering.
    * ley de frecuencias de palabras de Zipf = Zipf's word frequency law.
    * ley de la gravedad, la = law of gravity, the.
    * ley de la oferta y la demanda = law of supply and demand.
    * ley de la selva, la = law of the jungle, the.
    * Ley del Derecho a la Privacidad = privacy law, privacy protection law, Privacy Act.
    * ley del más fuerte, la = law of the jungle, the, law of the jungle, the, survival of the fittest, survival of the strongest.
    * Ley de los Medicamentos Raros, la = Orphan Drug Act, the.
    * ley de los rendimientos decrecientes = law of diminishing returns.
    * Ley de Lotka, la = Lotka's Law.
    * ley del secreto industrial = trade secret law.
    * ley de Pareto = Pareto's law.
    * ley de pesos y medidas = weights and measures act.
    * ley de productividad científica de Lotka = Lotka's scientific productivity law.
    * Ley de Propiedad Intelectual, la = intellectual property law, Copyright Act, the.
    * ley de relación exponencial inversa al cuadrado = inverse square law.
    * ley de relación exponencial inversa al cubo = inverse cube law.
    * ley de responsabilidad por el producto = product liability law.
    * Ley de Simplificación de los Procesos Administrativos = Paperwork Reduction Act.
    * ley de sucesión = inheritance law.
    * ley de vida = fact of life, laws of nature.
    * ley draconiana = draconian law.
    * leyes científicas = laws of physics.
    * leyes contra la difamación = laws of libel.
    * leyes de la ciencia = laws of physics.
    * leyes de la física = laws of physics.
    * leyes de la naturaleza = nature's laws, laws of nature.
    * leyes sobre la igualdad = equity laws.
    * leyes sobre patentes = patent law.
    * leyes vigentes = the law of the land.
    * ley exponencial = power law.
    * ley exponencial inversa = inverse power law.
    * ley marcial = martial law.
    * Ley Patriótica, La = USA Patriot Act, the.
    * ley penal = penal law.
    * ley sobre contratos = contract law.
    * ley sucesoria = inheritance law.
    * ley tribal = tribal law.
    * ley tributaria = tax bill.
    * no infringir las leyes = stay on + the right side of the law, keep on + the right side of the law.
    * obedecer la ley = observe + the law, follow + the law.
    * organismo encargado de hacer cumplir la ley = law enforcing agency.
    * por ley = mandated.
    * promulgar leyes = enact + legislation.
    * promulgar una ley = enact + law, promulgate + rule, promulgate + law.
    * proteger por ley = protect by + law.
    * proyecto de ley = green paper, legislative bill.
    * quebrantar la ley = break + the law.
    * rechazar una ley = defeat + legislation.
    * redactar leyes = draft + legislation.
    * redactar una ley = draft + law.
    * respetar la ley = observe + the law.
    * respetar las leyes = stay on + the right side of the law, keep on + the right side of the law.
    * respetuoso de la ley = law abiding.
    * saltarse la ley a la torera = flout + the law.
    * ser responsable ante la ley = be criminally liable.
    * tener problemas con la ley = fall + foul of the law, go + afoul of the law, fall + afoul of the law.
    * transgresor de la ley = lawbreaker.
    * valor de ley = force of law.
    * violación de la ley = breach of legislation.
    * violar una ley = violate + law, break + the law, be in breach of + law.
    * * *

    es ley de vida — it is a fact of life

    hacerle la ley del hielo a alguien — (Chi, Méx) to give somebody the cold shoulder

    la ley de la selva or de la jungla — the law of the jungle

    la ley del mínimo esfuerzo — the line of least resistance

    morir en su ley — (Andes) to die as one lived

    ley pareja no es dura — (CS) a rule isn't unfair if it applies to everyone

    2) ( justicia)

    con todas las de la ley: ganó con todas las de la ley she won very deservedly; una comida con todas las de la ley a proper meal; una democracia con todas las de la ley — a fully-fledged democracy

    4) (de oro, plata) assay value
    * * *
    = bill, law, legislative enactment, act.

    Ex: The conference debated a library bill which aims to set up public libraries in all municipalities with over 30,000 inhabitants.

    Ex: A catalogue code is a systematic arrangement of laws and statutes so as to avoid inconsistency and duplication in catalogues.
    Ex: Apply this rule to legislative enactments and decrees of a political jurisdiction and decrees of a chief executive having the force of law.
    Ex: This act allowed for the establishment of town libraries, which were free and open to all ratepayers and provided by funds from local rates.
    * acatar la ley = follow + the law.
    * acatar las leyes = keep on + the right side of the law.
    * al borde de la ley = on the edge of the law.
    * al margen de la ley = extra-judicial.
    * ante la ley = at law.
    * anteproyecto de ley = draft of legislation, draft bill.
    * aprobar una ley = pass + law, pass + legislation, pass + bill.
    * ausencia de ley = anomie.
    * autoridad sancionadora de ley = enactor of law.
    * castigar con todo el peso de la ley = punish + to the full extent of the law.
    * confección de leyes = law-making [lawmaking/law making].
    * con todas las de la ley = full-bodied, full-fledged, full-scale.
    * con todo el peso de la ley = to the full extent of the law.
    * contravenir la ley = contravene + the law, break + the law.
    * contravenir una ley = be in breach of + law.
    * creación de leyes = rulemaking [rule-making].
    * creador de leyes = rule-maker [rulemaker].
    * cumplidor de las leyes = law abiding.
    * cumplir la ley = observe + the law.
    * de acuerdo con la ley = according to law.
    * de ley = kosher.
    * dentro de la ley = within the law.
    * elaboración de leyes = rulemaking [rule-making].
    * espíritu de la ley, el = spirit of the law, the.
    * formulación de leyes = rulemaking [rule-making].
    * hacer cumplir la ley = law enforcement, enforce + law, legal enforcement.
    * hacer las leyes más estrictas = tighten + laws.
    * infractor de la ley = scofflaw.
    * infringir la ley = break + the law.
    * infringir una ley = infringe + law, violate + law, breach + law, be in breach of + law.
    * interpretar la ley = interpret + the law.
    * interpretar la ley según le convenga mejor a Uno = bend + the rules to suit + Posesivo + own purposes, bend + the rules, circumvent + rules.
    * ir en contra de la ley = be against the law.
    * legislación por decreto ley = delegated legislation.
    * ley antigua = ancient law.
    * ley antiterrorista = terrorism act.
    * ley consuetudinaria = customary law.
    * ley cósmica = cosmic law.
    * ley de bibliotecas = library law.
    * ley de bibliotecas, la = library act, the.
    * ley de copyright = copyright law.
    * ley de derechos de autor = copyright law.
    * ley de dispersión = law of scattering.
    * Ley de Dispersión de Bradford = Bradford's distribution law, Bradford's Law of Scatter, Bradford's Law of Scattering.
    * ley de frecuencias de palabras de Zipf = Zipf's word frequency law.
    * ley de la gravedad, la = law of gravity, the.
    * ley de la oferta y la demanda = law of supply and demand.
    * ley de la selva, la = law of the jungle, the.
    * Ley del Derecho a la Privacidad = privacy law, privacy protection law, Privacy Act.
    * ley del más fuerte, la = law of the jungle, the, law of the jungle, the, survival of the fittest, survival of the strongest.
    * Ley de los Medicamentos Raros, la = Orphan Drug Act, the.
    * ley de los rendimientos decrecientes = law of diminishing returns.
    * Ley de Lotka, la = Lotka's Law.
    * ley del secreto industrial = trade secret law.
    * ley de Pareto = Pareto's law.
    * ley de pesos y medidas = weights and measures act.
    * ley de productividad científica de Lotka = Lotka's scientific productivity law.
    * Ley de Propiedad Intelectual, la = intellectual property law, Copyright Act, the.
    * ley de relación exponencial inversa al cuadrado = inverse square law.
    * ley de relación exponencial inversa al cubo = inverse cube law.
    * ley de responsabilidad por el producto = product liability law.
    * Ley de Simplificación de los Procesos Administrativos = Paperwork Reduction Act.
    * ley de sucesión = inheritance law.
    * ley de vida = fact of life, laws of nature.
    * ley draconiana = draconian law.
    * leyes = the law of the land.
    * leyes científicas = laws of physics.
    * leyes contra la difamación = laws of libel.
    * leyes de la ciencia = laws of physics.
    * leyes de la física = laws of physics.
    * leyes de la naturaleza = nature's laws, laws of nature.
    * leyes sobre la igualdad = equity laws.
    * leyes sobre patentes = patent law.
    * leyes vigentes = the law of the land.
    * ley exponencial = power law.
    * ley exponencial inversa = inverse power law.
    * ley marcial = martial law.
    * Ley Patriótica, La = USA Patriot Act, the.
    * ley penal = penal law.
    * ley sobre contratos = contract law.
    * ley sucesoria = inheritance law.
    * ley tribal = tribal law.
    * ley tributaria = tax bill.
    * no infringir las leyes = stay on + the right side of the law, keep on + the right side of the law.
    * obedecer la ley = observe + the law, follow + the law.
    * organismo encargado de hacer cumplir la ley = law enforcing agency.
    * por ley = mandated.
    * promulgar leyes = enact + legislation.
    * promulgar una ley = enact + law, promulgate + rule, promulgate + law.
    * proteger por ley = protect by + law.
    * proyecto de ley = green paper, legislative bill.
    * quebrantar la ley = break + the law.
    * rechazar una ley = defeat + legislation.
    * redactar leyes = draft + legislation.
    * redactar una ley = draft + law.
    * respetar la ley = observe + the law.
    * respetar las leyes = stay on + the right side of the law, keep on + the right side of the law.
    * respetuoso de la ley = law abiding.
    * saltarse la ley a la torera = flout + the law.
    * ser responsable ante la ley = be criminally liable.
    * tener problemas con la ley = fall + foul of the law, go + afoul of the law, fall + afoul of the law.
    * transgresor de la ley = lawbreaker.
    * valor de ley = force of law.
    * violación de la ley = breach of legislation.
    * violar una ley = violate + law, break + the law, be in breach of + law.

    * * *
    conforme a la leyor según disponen las leyes in accordance with the law
    promulgar/dictar una ley to promulgate/issue a law
    aprobar/derogar una ley to pass/repeal a law
    aplicar una ley to apply a law
    se acogió a la ley de ciudadanía he sought protection under the citizenship law
    violar la ley to break the law
    atenerse a la ley to abide by o obey the law
    es ley de vida it is a fact of life
    hacerle la ley del hielo a algn (Chi, Méx); to give sb the cold shoulder
    la ley de la selva or de la jungla the law of the jungle
    la ley del más fuerte the survival of the fittest
    la ley del mínimo esfuerzo the line of least resistance
    la ley del Talión an eye for an eye
    aplicar la ley del Talión to demand an eye for an eye
    morir en su ley ( Andes); to die as one lived
    tenerle ley a algn ( Chi fam); to have it in for sb ( colloq)
    ley pareja no es dura or rigurosa (CS); a rule isn't unfair if it applies to everyone
    Compuestos:
    (en Esp) ≈ immigration laws (pl)
    (Andes, Méx): aplicarle a algn la ley de fuga(s) the practice of allowing a prisoner to escape and then shooting him/her in the back
    advantage rule
    unfair law/rule
    organic law
    la ley seca Prohibition
    tax law
    B
    (justicia): la ley the law
    todos somos iguales ante la ley we are all equal in the eyes of the law o under the law
    un representante de la ley a representative of the law
    con todas las de la ley: ganó con todas las de la ley she won very fairly o rightly o deservedly
    Compuestos:
    martial law
    Salic law
    C
    las leyes de la física the laws of physics
    2 ( Bib) law
    Compuestos:
    law of gravity
    law of supply and demand
    fpl Mendel's laws (pl)
    D (de oro, plata) assay value
    de buena ley genuine
    * * *

     

    ley sustantivo femenino
    1 ( en general) law;

    iguales ante la ley equal in the eyes of the law;
    ley de la oferta y la demanda law of supply and demand;
    la ley del más fuerte the survival of the fittest;
    ley pareja no es dura (CS) a rule isn't unfair if it applies to everyone
    2 (de oro, plata) assay value
    ley sustantivo femenino law
    Rel la ley del aborto, the abortion law
    la ley judía/cristiana, Jewish/Christian law
    ley marcial, martial law
    una ley de protección del patrimonio artístico, a law on artistic heritage protection
    la ley de la selva, the law of the jungle
    Pol proyecto de ley, bill
    ♦ Locuciones: es una persona de ley, he's a reliable person
    oro de ley, pure gold
    plata de ley, sterling silver
    ' ley' also found in these entries:
    Spanish:
    acogerse
    - adelante
    - anteproyecto
    - anular
    - anulación
    - aplicarse
    - aprobar
    - calle
    - codificar
    - decreto
    - derogación
    - dictar
    - estatuto
    - formular
    - hallar
    - igualdad
    - impugnar
    - infringir
    - LOGSE
    - observar
    - oposición
    - oro
    - plata
    - proscrita
    - proscrito
    - proyecto
    - radical
    - reformar
    - regir
    - relajar
    - respetar
    - retroactiva
    - retroactivo
    - rigor
    - sálica
    - sálico
    - sancionar
    - selva
    - someterse
    - supresión
    - suprimir
    - tabla
    - talión
    - título
    - universal
    - vigencia
    - vigente
    - vigor
    - violar
    - violación
    English:
    act
    - apply
    - arm
    - bill
    - breach
    - break
    - bring in
    - carry
    - date back to
    - date from
    - defy
    - effect
    - enact
    - enforce
    - equal
    - fingertip
    - frame
    - framework
    - full-fledged
    - go through
    - implement
    - infringe
    - infringement
    - introduce
    - introduction
    - jungle
    - keep
    - law
    - legal
    - letter
    - liberal
    - move
    - muscle
    - obey
    - observance
    - observe
    - pass
    - passing
    - provoke
    - repeal
    - repudiate
    - reversal
    - revival
    - revive
    - scope
    - section
    - sod
    - stand
    - state
    - statutory
    * * *
    ley nf
    1. [norma] law;
    [parlamentaria] act;
    hecha la ley, hecha la trampa laws are made to be broken;
    leyes [derecho] law
    ley de extranjería immigration law;
    ley de fugas = illegal execution of prisoner, pretending that he was shot while trying to escape;
    ley fundamental basic law, constitutional law;
    ley de incompatibilidades = act regulating which other positions may be held by people holding public office;
    ley marcial martial law;
    Pol ley marco framework law; Pol ley orgánica organic law; Hist ley sálica Salic law;
    ley seca prohibition law;
    Dep ley de la ventaja advantage (law);
    aplicar la ley de la ventaja to play the advantage
    2. [precepto religioso] law
    la ley coránica Koranic law;
    la ley judía Jewish law
    3. [principio] law
    Fam ley del embudo one law for oneself and another for everyone else;
    la ley del más fuerte the survival of the fittest;
    la ley del mínimo esfuerzo: [m5] seguir la ley del mínimo esfuerzo to take the line of least resistance;
    ley natural law of nature;
    ley de la oferta y de la demanda law of supply and demand;
    la ley de la selva the law of the jungle;
    la ley del talión an eye for an eye and a tooth for a tooth;
    no cree en la ley del talión she doesn't believe in “an eye for an eye”;
    ley de vida: [m5] es ley de vida it's a fact of life
    4.
    la ley [la justicia] the law;
    la igualdad ante la ley equality before the law;
    Fam
    con todas las de la ley: ganaron con todas las de la ley they won fair and square;
    ser de ley [situación] to be right and proper;
    [persona] to be totally trustworthy
    5. [de metal precioso]
    de ley [oro] = containing the legal amount of gold;
    [plata] sterling;
    de buena ley reliable, sterling;
    de mala ley crooked, disreputable
    * * *
    f law;
    es la ley del más fuerte might is right;
    una ley no escrita an unwritten law;
    con todas las de la ley fairly and squarely
    * * *
    ley nf
    1) : law
    fuera de la ley: outside the law
    la ley de gravedad: the law of gravity
    2) : purity (of metals)
    oro de ley: pure gold
    * * *
    ley n law

    Spanish-English dictionary > ley

  • 5 modulation

    modulation [mɔdylasjɔ̃]
    feminine noun
    modulation ; [de tarif, mesure] adjustment
    * * *
    mɔdylasjɔ̃
    1) Physique, Radio modulation
    2) ( flexibilité) flexibility
    3) ( adaptation) adjustment
    •
    Phrasal Verbs:
    * * *
    mɔdylasjɔ̃ nf
    * * *
    1 Phys, Radio modulation;
    2 ( flexibilité) flexibility;
    3 ( adaptation) adjustment.
    [mɔdylasjɔ̃] nom féminin
    1. [tonalité - de la voix] modulation
    2. ÉLECTRONIQUE & INFORMATIQUE & RADIO & TÉLÉCOMMUNICATIONS modulation
    modulation d'amplitude/de fréquence amplitude/frequency modulation
    rapidité/taux de modulation modulation rate/factor
    3. [nuance] modulation, variation
    4. ARCHITECTURE building-block ou modular principle

    Dictionnaire Français-Anglais > modulation

  • 6 Cockerell, Christopher Sydney

    [br]
    b. 4 June 1910 Cambridge, England
    [br]
    British designer and engineer who invented the hovercraft.
    [br]
    He was educated at Gresham's School in Holt and at Peterhouse College, Cambridge, where he graduated in engineering in 1931; he was made an Honorary Fellow in 1974. Cockerell entered the engineering firm of W.H.Allen \& Sons of Bedford as a pupil in 1931, and two years later he returned to Cambridge to engage in radio research for a further two years. In 1935 he joined Marconi Wireless Telegraph Company, working on very high frequency (VHF) transmitters and direction finders. During the Second World War he worked on airborne navigation and communication equipment, and later he worked on radar. During this period he filed thirty six patents in the fields of radio and navigational systems.
    In 1950 Cockerell left Marconi to set up his own boat-hire business on the Norfolk Broads. He began to consider how to increase the speed of boats by means of air lubrication. Since the 1870s engineers had at times sought to reduce the drag on a boat by means of a thin layer of air between hull and water. After his first experiments, Cockerell concluded that a significant reduction in drag could only be achieved with a thick cushion of air. After experimenting with several ways of applying the air-cushion principle, the first true hovercraft "took off" in 1955. It was a model in balsa wood, 2 ft 6 in. (762 mm) long and weighing 4½ oz. (27.6 g); it was powered by a model-aircraft petrol engine and could travel over land or water at 13 mph (20.8 km/h). Cockerell filed his first hovercraft patent on 12 December 1955. The following year he founded Hovercraft Ltd and began the search for a manufacturer. The government was impressed with the invention's military possibilities and placed it on the secret list. The secret leaked out, however, and the project was declassified. In 1958 the National Research and Development Corporation decided to give its backing, and the following year Saunders Roe Ltd with experience of making flying boats, produced the epoch-making SR N1, a hovercraft with an air cushion produced by air jets directed downwards and inwards arranged round the periphery of the craft. It made a successful crossing of the English Channel, with the inventor on board.
    Meanwhile Cockerell had modified the hovercraft so that the air cushion was enclosed within flexible skirts. In this form it was taken up by manufacturers throughout the world and found wide application as a passenger-carrying vehicle, for military transport and in scientific exploration and survey work. The hover principle found other uses, such as for air-beds to relieve severely burned patients and for hover mowers.
    The development of the hovercraft has occupied Cockerell since then and he has been actively involved in the several companies set up to exploit the invention, including Hovercraft Development Ltd and British Hovercraft Corporation. In the 1970s and 1980s he took up the idea of the generation of electricity by wavepower; he was Founder of Wavepower Ltd, of which he was Chairman from 1974 to 1982.
    [br]
    Principal Honours find Distinctions
    Knighted 1969. CBE 1955. FRS 1967.
    LRD

    Biographical history of technology > Cockerell, Christopher Sydney

  • 7 Frequenzmultiplexverfahren

    Frequenzmultiplexverfahren n frequency multiplexing, frequency division multiplexing (principle) (siehe auch: FDM)

    Deutsch-Englisch Wörterbuch der Elektrotechnik und Elektronik > Frequenzmultiplexverfahren

  • 8 Frequenzschachtelungsverfahren

    Frequenzschachtelungsverfahren n frequency multiplexing, frequency division multiplexing (principle) (siehe auch: FDM)

    Deutsch-Englisch Wörterbuch der Elektrotechnik und Elektronik > Frequenzschachtelungsverfahren

  • 9 Fessenden, Reginald Aubrey

    [br]
    b. 6 October 1866 East Bolton, Quebec, Canada
    d. 22 July 1932 Bermuda
    [br]
    Canadian radio pioneer who made the first known broadcast of speech and music.
    [br]
    After initial education at Trinity College School, Port Hope, Ontario, Fessenden studied at Bishops University, Lennoxville, Quebec. When he graduated in 1885, he became Principal of the Whitney Institute in Bermuda, but he left the following year to go to New York in pursuit of his scientific interests. There he met Edison and eventually became Chief Chemist at the latter's Laboratory in Orange, New Jersey. In 1890 he moved to the Westinghouse Electric and Manufacturing Company, and two years later he returned to an academic career as Professor of Electrical Engineering, initially at Purdue University, Lafayette, Indiana, and then at the Western University of Pennsylvania, where he worked on wireless communication. From 1900 to 1902 he carried out experiments in wireless telegraphy at the US Weather Bureau, filing several patents relating to wire and liquid thermal detectors, or barretters. Following this he set up the National Electric Signalling Company; under his direction, Alexanderson and other engineers at the General Electric Company developed a high-frequency alternator that enabled him to build the first radiotelephony transmitter at Brant Rock, Massachusetts. This made its initial broadcast of speech and music on 24 December 1906, received by ship's wireless operators several hundred miles away. Soon after this the transmitter was successfully used for two-way wireless telegraphy communication with Scotland. Following this landmark event, Fessenden produced numerous inventions, including a radio compass, an acoustic depth-finder and several submarine signalling devices, a turboelectric drive for battleships and, notably, in 1912 the heterodyne principle used in radio receivers to convert signals to a lower (intermediate) frequency.
    [br]
    Principal Honours and Distinctions
    Institute of Electrical and Electronics Engineers Medal of Honour 1921.
    Bibliography
    US patents relating to barretters include nos. 706,740, 706,742 and 706,744 (wire, 1902) and 731,029 (liquid, 1903). His invention of the heterodyne was filed as US patent no. 1,050,441 (1913).
    Further Reading
    Helen M.Fessenden, 1940, Fessenden. Builder of Tomorrow. E.Hawkes, 1927, Pioneers of Wireless, London: Methuen. O.E.Dunlop, 1944, Radio's 100 Men of Science.
    KF

    Biographical history of technology > Fessenden, Reginald Aubrey

  • 10 Tesla, Nikola

    SUBJECT AREA: Electricity
    [br]
    b. 9 July 1856 Smiljan, Croatia
    d. 7 January 1943 New York, USA
    [br]
    Serbian (naturalized American) engineer and inventor of polyphase electrical power systems.
    [br]
    While at the technical institute in Graz, Austria, Tesla's attention was drawn to the desirability of constructing a motor without a commutator. He considered the sparking between the commutator and brushes of the Gramme machine when run as a motor a serious defect. In 1881 he went to Budapest to work on the telegraph system and while there conceived the principle of the rotating magnetic field, upon which all polyphase induction motors are based. In 1882 Tesla moved to Paris and joined the Continental Edison Company. After building a prototype of his motor he emigrated to the United States in 1884, becoming an American citizen in 1889. He left Edison and founded an independent concern, the Tesla Electric Company, to develop his inventions.
    The importance of Tesla's first patents, granted in 1888 for alternating-current machines, cannot be over-emphasized. They covered a complete polyphase system including an alternator and induction motor. Other patents included the polyphase transformer, synchronous motor and the star connection of three-phase machines. These were to become the basis of the whole of the modern electric power industry. The Westinghouse company purchased the patents and marketed Tesla motors, obtaining in 1893 the contract for the Niagara Falls two-phase alternators driven by 5,000 hp (3,700 kW) water turbines.
    After a short period with Westinghouse, Tesla resigned to continue his research into high-frequency and high-voltage phenomena using the Tesla coil, an air-cored transformer. He lectured in America and Europe on his high-frequency devices, enjoying a considerable international reputation. The name "tesla" has been given to the SI unit of magnetic-flux density. The induction motor became one of the greatest advances in the industrial application of electricity. A claim for priority of invention of the induction motor was made by protagonists of Galileo Ferraris (1847–1897), whose discovery of rotating magnetic fields produced by alternating currents was made independently of Tesla's. Ferraris demonstrated the phenomenon but neglected its exploitation to produce a practical motor. Tesla himself failed to reap more than a small return on his work and later became more interested in scientific achievement than commercial success, with his patents being infringed on a wide scale.
    [br]
    Principal Honours and Distinctions
    American Institute of Electrical Engineers Edison Medal 1917. Tesla received doctorates from fourteen universities.
    Bibliography
    1 May 1888, American patent no. 381,968 (initial patent for the three-phase induction motor).
    1956, Nikola Tesla, 1856–1943, Lectures, Patents, Articles, ed. L.I.Anderson, Belgrade (selected works, in English).
    1977, My Inventions, repub. Zagreb (autobiography).
    Further Reading
    M.Cheney, 1981, Tesla: Man Out of Time, New Jersey (a full biography). C.Mackechnie Jarvis, 1969, in IEE Electronics and Power 15:436–40 (a brief treatment).
    T.C.Martin, 1894, The Inventions, Researches and Writings of Nikola Tesla, New York (covers his early work on polyphase systems).
    GW

    Biographical history of technology > Tesla, Nikola

  • 11 фильтр верхних частот

    Авиация и космонавтика. Русско-английский словарь > фильтр верхних частот

  • 12 ПРД

    1) General subject: TX
    2) oil&gas: принцип "разумной достаточности", принцип «настолько мало/низко, насколько это практически целесообразно», ALARP, as low as reasonably practicable, ALARP principle
    3) High frequency electronics: transmit/transmitter

    Универсальный русско-английский словарь > ПРД

  • 13 принцип установки наиболее часто осматриваемых деталей в наиболее доступных местах

    Универсальный русско-английский словарь > принцип установки наиболее часто осматриваемых деталей в наиболее доступных местах

  • 14 принцип установки наиболее часто осматриваемых или ремонтируемых деталей в наиболее доступных местах

    Универсальный русско-английский словарь > принцип установки наиболее часто осматриваемых или ремонтируемых деталей в наиболее доступных местах

  • 15 принцип установки наиболее часто ремонтируемых деталей в наиболее доступных местах

    Универсальный русско-английский словарь > принцип установки наиболее часто ремонтируемых деталей в наиболее доступных местах

  • 16 inversión

    f.
    1 investment.
    2 inversion, reversal.
    3 investment, outlay.
    * * *
    1 (gen) inversion
    2 FINANZAS investment
    * * *
    noun f.
    1) inversion, reversal
    * * *
    SF
    1) (Com, Econ) investment (en in)
    2) [de esfuerzo, tiempo] investment
    3) [de orden, dirección] inversion; (Elec) reversal; (Aut, Mec) reversing

    inversión de marcha — reversing, backing

    * * *
    1) (de dinero, tiempo, esfuerzos) investment
    2) (de posiciones, términos) reversal; ( de una imagen) inversion, reversal
    •
    * * *
    1) (de dinero, tiempo, esfuerzos) investment
    2) (de posiciones, términos) reversal; ( de una imagen) inversion, reversal
    •
    * * *
    inversión1
    1 = inversion, reversal.

    Ex: Cutter argued that when it could be established that the second term was definitely more significant then inversion of headings was acceptable.

    Ex: This is an interesting reversal of the rank order of countries for both stock held and expenditure per head of population.
    * inversión de funciones = reversal of roles, role reversal.
    * inversión de papeles = reversal of roles, role reversal.
    * inversión de poderes = power reversal.
    * inversión de roles = reversal of roles, role reversal.
    * método de la inversión de la frecuencia de los documentos (IDF) = Inverse Document Frequency model (IDF).

    inversión2
    2 = investment, investing, outlay.

    Ex: Investment of resources in enhancing free-text retrieval is not cost effective to them.

    Ex: This paper gives advice to librarians (primarily in the USA) on building and maintaining an up to date collection on investing and personal finance.
    Ex: Educative work must continue to be publicised and libraries must make greater outlays of funds and staff.
    * atraer inversiones = lure + investment.
    * beneficios de la inversión = return on investment (ROI).
    * beneficios en relación con la inversión = return on investment (ROI).
    * coste de la inversión = investment cost.
    * desinversión = divestiture.
    * fondo común de inversión = mutual fund.
    * fondo de inversión = mutual fund.
    * fondo de inversión libre = hedge fund.
    * ganancias de la inversión = return on investment (ROI).
    * ganancias en relación con la inversión = return on investment (ROI).
    * inversión de capital = capital costs, capital investment, capital expenditure.
    * inversión de recursos = commitment of resources.
    * inversión de tiempo = commitment of time.
    * inversión pública = public investment.
    * programa de inversiones = investment program(me).
    * sociedad de inversiones = investment trust.
    * sociedad de inversión mobiliaria = investment trust.

    * * *
    A
    1 ( Com, Fin) investment
    2 (de tiempo, esfuerzos) investment
    B (de posiciones, términos) reversal; (de una imagen) inversion, reversal
    Compuestos:
    top-up investment
    capital investment
    venture capital
    equity investment
    foreign investment
    thermal inversion
    * * *

     

    inversión sustantivo femenino
    1 (de dinero, tiempo, esfuerzos) investment
    2 (de posiciones, términos) reversal;
    ( de una imagen) inversion;

    inversión sustantivo femenino
    1 (de tiempo, dinero, esfuerzo) investment
    2 (de una magnitud, una figura) inversion
    inversión sustantivo masculino investment: voy hacer una inversión en bolsa, I'm going to invest in the stock market
    ' inversión' also found in these entries:
    Spanish:
    amortizar
    - amortización
    - reportar
    - satisfactoria
    - satisfactorio
    - segura
    - seguro
    - techo
    - anualidad
    - ayuda
    - diversificar
    - fomentar
    - fruto
    - realizar
    - rentable
    English:
    claw back
    - endowment
    - hedge
    - injection
    - input
    - investment
    - long-term
    - marginal
    - mutual fund
    - pay
    - principle
    - reversal
    - secure
    - unproductive
    - inversion
    * * *
    1. [del orden] inversion
    Meteo inversión térmica temperature inversion
    2. [de dinero] investment
    inversión de capital capital investment;
    inversión ética ethical investment;
    inversiones extranjeras foreign o overseas investments;
    inversión inicial initial investment;
    inversiones en paraísos fiscales offshore investments
    3. [de tiempo] investment
    * * *
    f
    1 reversal
    2 COM investment
    * * *
    inversión nf, pl - siones
    1) : inversion
    2) : investment
    * * *
    inversión n investment

    Spanish-English dictionary > inversión

  • 17 источник

    origin, principle, producer, source, spring, transmitter, well, ( орграфа) source vertex
    * * *
    исто́чник м.
    source
    служи́ть исто́чником — be a source (of), give rise (to), cause, originate
    исто́чник а́льфа-излуче́ния — alpha source
    бе́лый исто́чник ( лучистой энергии) — white source
    бесконе́чный исто́чник — infinite source
    исто́чник бе́та-излуче́ния — beta source
    исто́чник вихреобразова́ния — vorticity source
    вне́шний исто́чник — external [extraneous] source
    исто́чник возбужде́ния — excitation source
    исто́чник возбужде́ния пла́змы — plasma-excitation source
    исто́чник возмуще́ний — perturbation source
    исто́чник газовыделе́ния — gas emission source
    исто́чник га́мма-излуче́ния — gamma source
    исто́чник дислока́ции — dislocation [Frank-Read] source
    дугово́й исто́чник — arc source
    исто́чник зву́ка — sound source
    исто́чник зву́ка, мни́мый — acoustic(al) image
    исто́чник излуче́ния — radiation source; radiator, emitter
    исто́чник излуче́ния, дипо́льный — dipole source
    исто́чник излуче́ния, изото́пный — isotope (radiation) source
    исто́чник излуче́ния с попере́чной поляриза́цией — transversely polarized source
    исто́чник излуче́ния с продо́льной поляриза́цией — longitudinally polarized source
    исто́чник излуче́ния, я́дерный — nuclear (radiation) source
    и́мпульсный исто́чник — pulsed source
    исто́чник и́мпульсов — impulse source
    исто́чник инфе́кции — focal point of infection
    исто́чник информа́ции — information source, information generator
    исто́чник иониза́ции — ionization source
    исто́чник ио́нов — ion source
    исто́чник ио́нов, капилля́рный — capillary-type ion source
    искрово́й исто́чник — spark source
    капилля́рно-дугово́й исто́чник — capillary-arc source
    когере́нтный исто́чник — coherent source
    кольцево́й исто́чник — ring source
    исто́чник корпускуля́рного излуче́ния — particle source
    косми́ческий исто́чник — cosmic source
    лине́йный исто́чник — line [linear] source
    мни́мый исто́чник — virtual [image] source
    исто́чник молекуля́рного пучка́ — molecular gun
    монохромати́ческий исто́чник — monochromatic source
    исто́чник нака́чки рад.-эл. — pump(ing) source
    напра́вленный исто́чник — directional source
    исто́чник напряже́ния — voltage source
    нейтро́нный исто́чник — neutron source
    некогере́нтный исто́чник — incoherent source
    нестациона́рный исто́чник — transient source
    объё́мный исто́чник — volume source
    откры́тый исто́чник — bare source
    исто́чник оши́бок — error source
    перви́чный исто́чник — primary source
    исто́чник пита́ния — power [supply] source, power supply
    исто́чник пита́ния, авари́йный — emergency source
    исто́чник пита́ния, бортово́й — ( на любом транспортном средстве) on-board lower source; ( на самолете) airborne [airplane] power source; ( на автомобиле) car [truck, vehicle-born] power source; ( на судне) shipboard power source
    переходи́ть на бортово́й исто́чник пита́ния — transfer load(s) to the on-board power source
    исто́чник пита́ния, запасно́й — alternate supply source
    исто́чник пита́ния, назе́мный — ground power source
    исто́чник пита́ния на то́пливных элеме́нтах — fuel-cell power source
    исто́чник пита́ния, опо́рный — reference supply source
    исто́чник пита́ния, основно́й ( по отношению к аварийному) — normal supply source
    исто́чник пита́ния, сва́рочный — welding (power) source
    исто́чник пита́ния, сва́рочный, для дугово́й сва́рки — arc welding (power) source
    исто́чник пита́ния, сва́рочный, с жё́сткой характери́стикой — constant-potential welding [flat V/ I-curve] source
    исто́чник пита́ния, стабилизи́рованный — брит. stabilized power supply; амер. regulated power supply
    пла́зменный исто́чник — plasma source
    пло́ский исто́чник — plane [two-dimensional] source
    исто́чник пожароопа́сности — fire hazard
    откры́тое пла́мя представля́ет исто́чник пожароопа́сности — an open flame constitutes [is] a fire hazard
    по́лый исто́чник — hollow source
    исто́чник по́ля — field source
    исто́чник постоя́нного ( фиксированного) [m2]напряже́ния — constant-voltage source
    исто́чник постоя́нного ( фиксированного) [m2]то́ка — constant-current source
    постоя́нный исто́чник — steady source
    протяжё́нный исто́чник — distributed [extended, spread] source
    исто́чник пылеобразова́ния — dust source
    равноэнергети́ческий исто́чник — equal-energy source
    радиоакти́вный исто́чник — radioactive source
    исто́чник радиоизлуче́ния — source of radio-frequency radiation, radio source
    исто́чник радиоизлуче́ния, внегалакти́ческий — extragalactic radio source
    исто́чник радиоизлуче́ния, галакти́ческий — galactic radio source
    распределё́нный исто́чник — distributed [extended, spread] source
    исто́чник рентге́новского излуче́ния — X-ray source
    исто́чник све́та — light source
    исто́чник све́та, газоразря́дный — gas-discharge light source
    исто́чник све́та, искрово́й — spark light source
    исто́чник све́та, иску́сственный — artificial light source
    исто́чник све́та, люминесце́нтный — luminescent light source
    исто́чник све́та, модули́рованный — modulated light source
    исто́чник све́та, радиоакти́вный — radioactive light source
    исто́чник све́та с а́томным пучко́м — atomic-beam light source
    исто́чник све́та, твердоте́льный — solid-state light source
    исто́чник све́та, температу́рный — incandescent source
    исто́чник синхронизи́рующих и́мпульсов — clock source
    «слоё́ный» исто́чник — sandwiched [sandwich-type] source
    сосредото́ченный исто́чник — lumped source
    исто́чник с пове́рхностной иониза́цией — surface ionization source
    стациона́рный исто́чник — stationary source
    исто́чник с широ́ким энергети́ческим спе́ктром — broad-energy-spectrum source
    исто́чник телефо́нной нагру́зки (линия, прибор или устройство) — telephone traffic source
    исто́чник тепла́ — heat source
    исто́чник тепла́, холо́дный ( в термодинамике) — (heat) sink
    исто́чник тепловы́х нейтро́нов — thermal-neutron source
    исто́чник то́ка — (собственно источник тока, в отличие от источника напряжения) current source; ( часто как источник питания) power supply, power [supply] source
    исто́чник то́ка, втори́чный — ( единичный элемент) secondary cell; ( батарея) storage battery
    исто́чник то́ка, перви́чный — ( единичный элемент) primary cell; ( батарея) primary-cell battery
    исто́чник то́ка, резе́рвный — emergency current generator cell
    исто́чник то́ка, физи́ческий — physical source of electric energy
    исто́чник то́ка, хими́ческий — chemical source of electric energy
    то́чечный исто́чник — point source
    то́чечный, осево́й исто́чник — axial point source
    то́чечный исто́чник с ра́вной фа́зой — cophasal point source
    исто́чник шу́ма — noise source
    щелево́й исто́чник — slit source
    исто́чник электро́нов — electron-emitting source
    исто́чник эне́ргии — energy [power] source
    исто́чник эне́ргии, биологи́ческий — bioelectric power source
    исто́чник эне́ргии, биоэлектри́ческий — bioelectric power source
    эргоди́ческий исто́чник — ergodic source
    этало́нный исто́чник — standard source
    исто́чник я́дерного излуче́ния — nuclear radiation source

    Русско-английский политехнический словарь > источник

  • 18 принципы, лежащие в основе использования

    Принципы, лежащие в основе использования
     The principle behind the use of high frequency is that, for a successful ultrasonic inspection, the ultrasonic wavelength must be of the same order of magnitude as the defect to be detected.
     The philosophy behind the use of these tests was that any three-dimensional stress system could, by the addition or subtraction of a suitable hydrostatic stress, be represented by a tension-torsion system.

    Русско-английский научно-технический словарь переводчика > принципы, лежащие в основе использования

  • 19 Rawcliffe, Gordon Hindle

    SUBJECT AREA: Electricity
    [br]
    b. 2 June 1910 Sheffield, England
    d. 3 September 1979 Bristol, England
    [br]
    English scientist and inventor of the multi-speed induction motor using the pole amplitude modulation principle.
    [br]
    After graduating from Keble College, Oxford, Rawcliffe joined the Metropolitan Vickers Electrical Company in 1932 as a college apprentice, and later became a design engineer. This was followed by a period as a lecturer at Liverpool University, where he was able to extend his knowledge of the principles underlying the design and operation of electrical machines. In 1941 he became Head of the Electrical Engineering Department at the Robert Gordon Technical College, Aberdeen, and Lecturer in charge of Electrical Engineering at Aberdeen University. In 1944 Rawcliffe was appointed to the Chair of Electrical Engineering at the University of Bristol, where he remained until his retirement in 1975. The reputation of his department was enhanced by the colleagues he recruited.
    After 1954 he began research into polyphase windings, the basis of alternating-current machinery, and published papers concerned with the dual problems of frequency changing and pole changing. The result of this research was the discovery in 1957 of a technique for making squirrel-cage induction motors run at more than one speed. By reversing current in one part of the winding, the pole distribution and number were changed, and with it the speed of rotation.
    Rawcliffe's name became synonymous with pole amplitude modulation, or PAM, the name given to this technique. Described by Rawcliffe as a new philosophy of windings, the technique led to a series of research papers, patents and licensing agreements in addition to consultancies to advise on application problems. Commercial exploitation of the new idea throughout Western Europe, the United Kingdom and the United States followed. In total he contributed twentyfive papers to the Proceedings of the Institution of Electrical Engineers and some sixty British patent applications were filed.
    [br]
    Principal Honours and Distinctions
    FRS 1972. Royal Society S.G.Brown Medal 1978.
    Bibliography
    21 August 1958, British patent no. 900,600 (pole amplitude modulation).
    1958, with R.F.Burbridge and W.Fong, "Induction motor speed changing by pole amplitude modulation", Proceedings of the Institution of Electrical Engineers 105 (Part A): 411–19 (the first description of pole amplitude modulation).
    Further Reading
    Biographical Memoirs of Fellows of the Royal Society, 1981, Vol. XXVII, London, pp. 479–503 (includes lists of Rawcliffe's patents and principal papers published).
    GW

    Biographical history of technology > Rawcliffe, Gordon Hindle

  • 20 принцип смеси высоких частот

    Русско-английский словарь по информационным технологиям > принцип смеси высоких частот

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