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  • 1 grado

    m.
    1 degree.
    grado centígrado degree centigrade
    2 degree.
    quemaduras de primer grado first-degree burns
    mostró un alto grado de preparación he was very well prepared
    en menor grado to a lesser extent o degree
    en grado sumo greatly
    3 grade (rango).
    4 year, class (education).
    5 score, grade.
    pres.indicat.
    1st person singular (yo) present indicative of spanish verb: gradar.
    * * *
    1 (gen) degree
    2 (estado) stage
    3 EDUCACIÓN (curso) class, year, US grade
    5 (peldaño) step
    6 MILITAR rank
    7 LINGÚÍSTICA degree
    \
    de buen grado willingly, with good grace
    de mal grado unwillingly, with bad grace
    en sumo grado to the highest degree
    en tal grado so much so
    * * *
    noun m.
    * * *
    SM
    1) (=nivel) degree

    quemaduras de primer/segundo grado — first-/second-degree burns

    • en alto grado — to a great degree

    • de grado en grado — step by step, by degrees

    • en mayor grado — to a greater degree o extent

    • en menor grado — to a lesser degree o extent

    • en sumo grado o en grado sumo, era humillante en sumo grado — it was humiliating in the extreme

    • en grado superlativo — in the extreme

    • tercer grado (penitenciario) — Esp lowest category within the prison system which allows day release privileges

    2) (Geog, Mat, Fís) degree
    3) [de escalafón] grade; (Mil) rank
    4) (=etapa) stage
    5) esp LAm (Educ) (=curso) year, grade (EEUU); (=título) degree

    colación de grados — Arg conferment of degrees

    6) (Ling) degree of comparison

    adjetivos en grado comparativo — comparative adjectives, comparatives

    adjetivos en grado superlativo — superlative adjectives, superlatives

    7) (=gusto)

    • de (buen) grado — willingly

    • de mal grado — unwillingly

    de grado o por (la) fuerza —

    otros muchos países entraron en guerra, de grado o por la fuerza — many other countries were forced willy-nilly to enter the war

    pues tendrás que ir, de grado o por la fuerza — well you'll have to go, like it or not

    8) [de escalera] step
    9) pl grados (Rel) minor orders
    * * *
    1)
    a) (nivel, cantidad) degree

    el asunto se ha complicado en or (AmL) a tal grado... — things have become so complicated...

    en grado sumo: me preocupó en grado sumo it caused me great concern; nos complace en grado sumo comunicarle que... — it gives us great pleasure to inform you that...

    b) ( de parentesco) degree
    2) ( de escalafón) grade

    de buen/mal grado — willingly/unwillingly

    4)
    a) (Fís, Meteo) degree
    b) (Geog, Mat) degree
    c) (Vin) degree
    5)
    a) (esp AmL) (Educ) (curso, año) year
    b) ( título)
    * * *
    = degree, extent, index [indices/indexes, -pl.], magnitude, range, rate, scale, to what extent, grade, quotient, degree.
    Ex. This degree of standardisation is not the pattern outside of this specific area of application.
    Ex. The extent of searchable elements will vary from one data base to another.
    Ex. As job anxiety scores increased, job satisfaction indices decreased.
    Ex. Only those who have attempted to edit the proceedings of a conference can appreciate the magnitude and scope of such an enterprise.
    Ex. Overall, the library media specialists experienced stress in the mild to moderate range.
    Ex. Whether, in the future, the co-operatives will be able to fund appropriate developments at a sufficiently rapid rate remains an unanswered question.
    Ex. Various scales of relevance ratings may be established.
    Ex. Clearly an index must permit access to a document by its central theme, but, to what extent should access be provided to secondary or subsidiary topics considered within a document?.
    Ex. The project is concerned with the investigation of conditions of appointment for women librarians as well as the grades and salary scales assigned to library tasks.
    Ex. One reads, for instance, that a parameter in assessing the maximum period a user can be kept waiting is the 'aggravation quotient'.
    Ex. In cartography reference system is the method by which one can locate a place on a map, eg (a) degrees of latitude and longitude; (b) a grid reference.
    ----
    * alumno de cuarto grado = fourth grader.
    * asesinato en primer grado = first-degree murder.
    * bebida alcohólica con muchos grados = hard drink, hard liquor.
    * cada vez en mayor grado = ever-increasing.
    * cierto grado de = a degree of.
    * de buen grado = willing, good-humouredly, good-humoured, good-naturedly.
    * de grado básico = junior grade.
    * delito de menor grado = misdemeanour [misdimeanor, -USA].
    * de primer grado = in the first degree.
    * de segundo grado = second-degree, in the second degree.
    * el grado de = the extent of.
    * el grado de + Nombre = the breadth and depth of + Nombre.
    * el grado en que = the extent to which.
    * en cierto grado = something of.
    * en diferente grado = differing, in varying measures.
    * en distinto grado = in varying measures, differing, to varying degrees.
    * en diverso grado = to varying degrees.
    * en diversos grados = to varying extents.
    * en este grado = to this extent.
    * en grado mínimo = minimally.
    * en mayor grado = to a greater degree, a fortiori, to a greater extent, to a larger degree, to a larger extent.
    * en mayor o menor grado = to a greater or lesser degree.
    * en menor grado = to a lesser extent, to a lesser degree.
    * en sumo grado = in the extreme.
    * en tercer grado = in the third degree.
    * en un grado bastante aceptable = to a fair extent.
    * en un grado sumo = in the extreme.
    * escala que consta de nueve grados = nine-point scale.
    * girar 180 grados = move + 180 degrees.
    * grado centígrado (ºC) = degree centigrade (ºC).
    * grado de aceptación = acceptance rate.
    * grado de acidez = pH, ph value.
    * grado de adecuación = degree of fit.
    * grado de citación = citedness.
    * grado de cobertura = depth of coverage.
    * grado de coincidencia entre el tema de un documento y el tema de búsqueda = topicality.
    * grado de compleción = completeness.
    * grado de escepticismo = degree of skepticism.
    * grado de integración = scale of integration.
    * grado de no citación = uncitedness.
    * grado de pertinencia = recall tendency.
    * grado de precisión = degree of detail.
    * grado de proximidad entre dos = betweenness.
    * grado de relación = relatedness measure.
    * grado medio = middle grade.
    * grado superlativo = superlative.
    * hasta tal grado que = so much so that.
    * salón de grados = conference room.
    * tomarse Algo de buen grado = take + Nombre + in good humour.
    * un cierto grado de = a certain amount of, a modicum of.
    * vida + dar un giro de 180 grados = turn + Posesivo + life around.
    * * *
    1)
    a) (nivel, cantidad) degree

    el asunto se ha complicado en or (AmL) a tal grado... — things have become so complicated...

    en grado sumo: me preocupó en grado sumo it caused me great concern; nos complace en grado sumo comunicarle que... — it gives us great pleasure to inform you that...

    b) ( de parentesco) degree
    2) ( de escalafón) grade

    de buen/mal grado — willingly/unwillingly

    4)
    a) (Fís, Meteo) degree
    b) (Geog, Mat) degree
    c) (Vin) degree
    5)
    a) (esp AmL) (Educ) (curso, año) year
    b) ( título)
    * * *
    = degree, extent, index [indices/indexes, -pl.], magnitude, range, rate, scale, to what extent, grade, quotient, degree.

    Ex: This degree of standardisation is not the pattern outside of this specific area of application.

    Ex: The extent of searchable elements will vary from one data base to another.
    Ex: As job anxiety scores increased, job satisfaction indices decreased.
    Ex: Only those who have attempted to edit the proceedings of a conference can appreciate the magnitude and scope of such an enterprise.
    Ex: Overall, the library media specialists experienced stress in the mild to moderate range.
    Ex: Whether, in the future, the co-operatives will be able to fund appropriate developments at a sufficiently rapid rate remains an unanswered question.
    Ex: Various scales of relevance ratings may be established.
    Ex: Clearly an index must permit access to a document by its central theme, but, to what extent should access be provided to secondary or subsidiary topics considered within a document?.
    Ex: The project is concerned with the investigation of conditions of appointment for women librarians as well as the grades and salary scales assigned to library tasks.
    Ex: One reads, for instance, that a parameter in assessing the maximum period a user can be kept waiting is the 'aggravation quotient'.
    Ex: In cartography reference system is the method by which one can locate a place on a map, eg (a) degrees of latitude and longitude; (b) a grid reference.
    * alumno de cuarto grado = fourth grader.
    * asesinato en primer grado = first-degree murder.
    * bebida alcohólica con muchos grados = hard drink, hard liquor.
    * cada vez en mayor grado = ever-increasing.
    * cierto grado de = a degree of.
    * de buen grado = willing, good-humouredly, good-humoured, good-naturedly.
    * de grado básico = junior grade.
    * delito de menor grado = misdemeanour [misdimeanor, -USA].
    * de primer grado = in the first degree.
    * de segundo grado = second-degree, in the second degree.
    * el grado de = the extent of.
    * el grado de + Nombre = the breadth and depth of + Nombre.
    * el grado en que = the extent to which.
    * en cierto grado = something of.
    * en diferente grado = differing, in varying measures.
    * en distinto grado = in varying measures, differing, to varying degrees.
    * en diverso grado = to varying degrees.
    * en diversos grados = to varying extents.
    * en este grado = to this extent.
    * en grado mínimo = minimally.
    * en mayor grado = to a greater degree, a fortiori, to a greater extent, to a larger degree, to a larger extent.
    * en mayor o menor grado = to a greater or lesser degree.
    * en menor grado = to a lesser extent, to a lesser degree.
    * en sumo grado = in the extreme.
    * en tercer grado = in the third degree.
    * en un grado bastante aceptable = to a fair extent.
    * en un grado sumo = in the extreme.
    * escala que consta de nueve grados = nine-point scale.
    * girar 180 grados = move + 180 degrees.
    * grado centígrado (ºC) = degree centigrade (ºC).
    * grado de aceptación = acceptance rate.
    * grado de acidez = pH, ph value.
    * grado de adecuación = degree of fit.
    * grado de citación = citedness.
    * grado de cobertura = depth of coverage.
    * grado de coincidencia entre el tema de un documento y el tema de búsqueda = topicality.
    * grado de compleción = completeness.
    * grado de escepticismo = degree of skepticism.
    * grado de integración = scale of integration.
    * grado de no citación = uncitedness.
    * grado de pertinencia = recall tendency.
    * grado de precisión = degree of detail.
    * grado de proximidad entre dos = betweenness.
    * grado de relación = relatedness measure.
    * grado medio = middle grade.
    * grado superlativo = superlative.
    * hasta tal grado que = so much so that.
    * salón de grados = conference room.
    * tomarse Algo de buen grado = take + Nombre + in good humour.
    * un cierto grado de = a certain amount of, a modicum of.
    * vida + dar un giro de 180 grados = turn + Posesivo + life around.

    * * *
    A
    1 (nivel, cantidad) degree
    otro ejemplo del grado de confusión reinante another example of the degree of confusion that prevails
    depende del grado de libertad que tengan it depends on how much freedom o the degree of freedom they enjoy
    el asunto se ha complicado en or ( AmL) a tal grado que no le veo solución things have become so complicated that I can't see any solution
    en grado sumo: la noticia me preocupó en grado sumo the news worried me greatly o caused me great concern
    nos complace en grado sumo poder comunicarle que … it gives us great pleasure to be able to inform you that …
    son primos en segundo grado they are second cousins
    un oficial de grado superior a high-ranking officer
    medio1 (↑ medio (1))
    C
    (disposición): de buen grado readily, willingly, with good grace
    de mal grado reluctantly, unwillingly, with bad grace
    D
    estamos a tres grados bajo cero it's three degrees below zero, it's minus three degrees
    2 ( Geog, Mat) degree
    a un ángulo de 60 grados at an angle of 60 degrees, at a 60° angle
    25 grados de latitud/longitud 25 degrees latitude/longitude
    3 ( Vin) degree
    un vino de 12 grados a 12% proof wine
    Compuestos:
    ● grado centígrado or Celsius
    degree centigrade o Celsius
    degree Fahrenheit
    E
    1 ( esp AmL) ( Educ) (curso, año) year, grade ( AmE), form ( BrE)
    2
    (título): tiene el grado de licenciado he has a college degree ( AmE), he has a university degree ( BrE)
    F ( Ling) degree
    grado positivo/comparativo positive/comparative degree
    G ( Der) stage
    el juicio se halla en grado de apelación/revisión the trial is at the appeal/review stage
    * * *

     

    grado sustantivo masculino
    1 ( en general) degree;

    grado centígrado or Celsius/Fahrenheit degree centigrade o Celsius/Fahrenheit;
    el grado de confusión reinante the degree of confusion that prevails;
    en grado sumo extremely
    2 ( de escalafón) grade;
    (Mil) rank
    3 ( disposición):
    ◊ de buen/mal grado willingly/unwillingly

    4
    a) (esp AmL) (Educ) (curso, año) year

    b) ( título):

    ◊ tiene el grado de licenciado he has a college (AmE) o (BrE) university degree

    grado sustantivo masculino
    1 degree
    2 Mil rank
    3 (gusto, voluntad) desire, will
    ♦ Locuciones: de buen/mal grado, willingly/reluctantly
    ' grado' also found in these entries:
    Spanish:
    categoría
    - coeficiente
    - colmo
    - ecuación
    - insolación
    - jerarquía
    - mayor
    - medida
    - menor
    - menos
    - mínimamente
    - poder
    - punto
    - superior
    - décima
    - enfadado
    - enfadar
    - enojado
    - enojar
    - extensión
    - grande
    English:
    accurately
    - degree
    - extent
    - extreme
    - first-degree
    - grace
    - grade
    - grind
    - insofar
    - may
    - optimum
    - point
    - rank
    - registrar
    - subaltern
    - commission
    - freely
    - lesser
    * * *
    grado nm
    1. [de temperatura] degree
    grado Celsius degree Celsius;
    grado centígrado degree centigrade;
    grado Fahrenheit degree Fahrenheit;
    grado Kelvin kelvin
    2. [de alcohol]
    ¿cuántos grados tiene ese whisky? how strong is that whisky?;
    alcohol de 90 grados 90 degree proof alcohol
    3. [índice, nivel] degree;
    el candidato mostró un alto grado de preparación the candidate was very well prepared;
    un fenómeno que afecta en menor grado a las ciudades a phenomenon that affects cities to a lesser extent o degree;
    eso depende del grado de intransigencia de la gente that depends on how prepared people are to compromise;
    están examinando su grado de ceguera they're checking to see how blind she is;
    la situación empeoró en tal o Am [m5]a tal grado que… the situation deteriorated to such a degree o to such an extent that…;
    en grado sumo greatly
    4. [en escala] degree;
    quemaduras de primer grado first-degree burns;
    asesinato en segundo grado second-degree murder
    5. [rango] grade;
    es primo mío en segundo grado he's my second cousin
    6. Mil rank
    7. Educ [año] year, class, US grade
    8. Educ [título] degree;
    obtuvo el grado de doctor he obtained his doctorate
    9. Ling degree
    grado comparativo comparative degree;
    grado superlativo superlative degree
    10. Mat [de ángulo] degree
    11. Mat [de ecuación]
    una ecuación de segundo grado a quadratic equation
    12. [voluntad]
    hacer algo de buen/mal grado to do sth willingly/unwillingly;
    te lo prestaré de buen grado I'd be happy to lend it to you
    * * *
    m
    1 degree;
    2
    :
    de buen grado with good grace, readily;
    de mal grado with bad grace, reluctantly
    * * *
    grado nm
    1) : degree (in meteorology and mathematics)
    grado centígrado: degree centigrade
    2) : extent, level, degree
    en grado sumo: greatly, to the highest degree
    3) rango: rank
    4) : year, class (in education)
    5)
    de buen grado : willingly, readily
    * * *
    grado n degree

    Spanish-English dictionary > grado

  • 2 Warren, Henry Ellis

    SUBJECT AREA: Horology
    [br]
    b. 21 May 1872 Boston, Massachusetts, USA
    d. 21 September 1957 Ashland, Massachusetts, USA
    [br]
    American electrical engineer who invented the mains electric synchronous clock.
    [br]
    Warren studied electrical engineering at the Boston Institute of Technology (later to become the Massachusetts Institute of Technology) and graduated in 1894. In 1912 he formed the Warren Electric Clock Company to make a battery-powered clock that he had patented a few years earlier. The name was changed to the Warren Telechron (time at a distance) Company after he had started to produce synchronous clocks.
    In 1840 Charles Wheatstone had produced an electric master clock that produced an alternating current with a frequency of one cycle per second and which was used to drive slave dials. This system was not successful, but when Ferranti introduced the first alternating current power generator at Deptford in 1895 Hope-Jones saw in it a means of distributing time. This did not materialize immediately because the power generators did not control the frequency of the current with sufficient accuracy, and a reliable motor whose speed was related to this frequency was not available. In 1916 Warren solved both problems: he produced a reliable self-starting synchronous electric motor and he also made a master clock which could be used at the power station to control accurately the frequency of the supply. Initially the power-generating companies were reluctant to support the synchronous clock because it imposed a liability to control the frequency of the supply and the gain was likely to be small because it was very frugal in its use of power. However, with the advent of the grid system, when several generators were connected together, it became imperative to control the frequency; it was realized that although the power consumption of individual clocks was small, collectively it could be significant as they ran continuously. By the end of the 1930s more than half the clocks sold in the USA were of the synchronous type. The Warren synchronous clock was introduced into Great Britain in 1927, following the setting up of a grid system by the Electricity Commission.
    [br]
    Principal Honours and Distinctions
    Franklin Institute John Price Wetherill Medal. American Institute of Electrical Engineers Lamme Medal.
    Bibliography
    The patents for the synchronous motor are US patent nos. 1,283,432, 1,283,433 and 1,283,435, and those for the master clock are 1,283,431, 1,409,502 and 1,502,493 of 29 October 1918 onwards.
    1919, "Utilising the time characteristics of alternating current", Transactions of the American Institute of Electrical Engineers 38:767–81 (Warren's first description of his system).
    Further Reading
    J.M.Anderson, 1991, "Henry Ellis Warren and his master clocks", National Association of Watch and Clock Collectors Bulletin 33:375–95 (provides biographical and technical details).
    DV

    Biographical history of technology > Warren, Henry Ellis

  • 3 De Forest, Lee

    [br]
    b. 26 August 1873 Council Bluffs, Iowa, USA
    d. 30 June 1961 Hollywood, California, USA
    [br]
    American electrical engineer and inventor principally known for his invention of the Audion, or triode, vacuum tube; also a pioneer of sound in the cinema.
    [br]
    De Forest was born into the family of a Congregational minister that moved to Alabama in 1879 when the father became President of a college for African-Americans; this was a position that led to the family's social ostracism by the white community. By the time he was 13 years old, De Forest was already a keen mechanical inventor, and in 1893, rejecting his father's plan for him to become a clergyman, he entered the Sheffield Scientific School of Yale University. Following his first degree, he went on to study the propagation of electromagnetic waves, gaining a PhD in physics in 1899 for his thesis on the "Reflection of Hertzian Waves from the Ends of Parallel Wires", probably the first US thesis in the field of radio.
    He then joined the Western Electric Company in Chicago where he helped develop the infant technology of wireless, working his way up from a modest post in the production area to a position in the experimental laboratory. There, working alone after normal working hours, he developed a detector of electromagnetic waves based on an electrolytic device similar to that already invented by Fleming in England. Recognizing his talents, a number of financial backers enabled him to set up his own business in 1902 under the name of De Forest Wireless Telegraphy Company; he was soon demonstrating wireless telegraphy to interested parties and entering into competition with the American Marconi Company.
    Despite the failure of this company because of fraud by his partners, he continued his experiments; in 1907, by adding a third electrode, a wire mesh, between the anode and cathode of the thermionic diode invented by Fleming in 1904, he was able to produce the amplifying device now known as the triode valve and achieve a sensitivity of radio-signal reception much greater than possible with the passive carborundum and electrolytic detectors hitherto available. Patented under the name Audion, this new vacuum device was soon successfully used for experimental broadcasts of music and speech in New York and Paris. The invention of the Audion has been described as the beginning of the electronic era. Although much development work was required before its full potential was realized, the Audion opened the way to progress in all areas of sound transmission, recording and reproduction. The patent was challenged by Fleming and it was not until 1943 that De Forest's claim was finally recognized.
    Overcoming the near failure of his new company, the De Forest Radio Telephone Company, as well as unsuccessful charges of fraudulent promotion of the Audion, he continued to exploit the potential of his invention. By 1912 he had used transformer-coupling of several Audion stages to achieve high gain at radio frequencies, making long-distance communication a practical proposition, and had applied positive feedback from the Audion output anode to its input grid to realize a stable transmitter oscillator and modulator. These successes led to prolonged patent litigation with Edwin Armstrong and others, and he eventually sold the manufacturing rights, in retrospect often for a pittance.
    During the early 1920s De Forest began a fruitful association with T.W.Case, who for around ten years had been working to perfect a moving-picture sound system. De Forest claimed to have had an interest in sound films as early as 1900, and Case now began to supply him with photoelectric cells and primitive sound cameras. He eventually devised a variable-density sound-on-film system utilizing a glow-discharge modulator, the Photion. By 1926 De Forest's Phonofilm had been successfully demonstrated in over fifty theatres and this system became the basis of Movietone. Though his ideas were on the right lines, the technology was insufficiently developed and it was left to others to produce a system acceptable to the film industry. However, De Forest had played a key role in transforming the nature of the film industry; within a space of five years the production of silent films had all but ceased.
    In the following decade De Forest applied the Audion to the development of medical diathermy. Finally, after spending most of his working life as an independent inventor and entrepreneur, he worked for a time during the Second World War at the Bell Telephone Laboratories on military applications of electronics.
    [br]
    Principal Honours and Distinctions
    Institute of Electronic and Radio Engineers Medal of Honour 1922. President, Institute of Electronic and Radio Engineers 1930. Institute of Electrical and Electronics Engineers Edison Medal 1946.
    Bibliography
    1904, "Electrolytic detectors", Electrician 54:94 (describes the electrolytic detector). 1907, US patent no. 841,387 (the Audion).
    1950, Father of Radio, Chicago: WIlcox \& Follett (autobiography).
    De Forest gave his own account of the development of his sound-on-film system in a series of articles: 1923. "The Phonofilm", Transactions of the Society of Motion Picture Engineers 16 (May): 61–75; 1924. "Phonofilm progress", Transactions of the Society of Motion Picture Engineers 20:17–19; 1927, "Recent developments in the Phonofilm", Transactions of the Society of Motion Picture Engineers 27:64–76; 1941, "Pioneering in talking pictures", Journal of the Society of Motion Picture Engineers 36 (January): 41–9.
    Further Reading
    G.Carneal, 1930, A Conqueror of Space (biography).
    I.Levine, 1964, Electronics Pioneer, Lee De Forest (biography).
    E.I.Sponable, 1947, "Historical development of sound films", Journal of the Society of Motion Picture Engineers 48 (April): 275–303 (an authoritative account of De Forest's sound-film work, by Case's assistant).
    W.R.McLaurin, 1949, Invention and Innovation in the Radio Industry.
    C.F.Booth, 1955, "Fleming and De Forest. An appreciation", in Thermionic Valves 1904– 1954, IEE.
    V.J.Phillips, 1980, Early Radio Detectors, London: Peter Peregrinus.
    KF / JW

    Biographical history of technology > De Forest, Lee

  • 4 Zworykin, Vladimir Kosma

    [br]
    b. 30 July 1889 Mourum (near Moscow), Russia
    d. 29 July 1982 New York City, New York, USA
    [br]
    Russian (naturalized American 1924) television pioneer who invented the iconoscope and kinescope television camera and display tubes.
    [br]
    Zworykin studied engineering at the Institute of Technology in St Petersburg under Boris Rosing, assisting the latter with his early experiments with television. After graduating in 1912, he spent a time doing X-ray research at the Collège de France in Paris before returning to join the Russian Marconi Company, initially in St Petersburg and then in Moscow. On the outbreak of war in 1917, he joined the Russian Army Signal Corps, but when the war ended in the chaos of the Revolution he set off on his travels, ending up in the USA, where he joined the Westinghouse Corporation. There, in 1923, he filed the first of many patents for a complete system of electronic television, including one for an all-electronic scanning pick-up tube that he called the iconoscope. In 1924 he became a US citizen and invented the kinescope, a hard-vacuum cathode ray tube (CRT) for the display of television pictures, and the following year he patented a camera tube with a mosaic of photoelectric elements and gave a demonstration of still-picture TV. In 1926 he was awarded a PhD by the University of Pittsburgh and in 1928 he was granted a patent for a colour TV system.
    In 1929 he embarked on a tour of Europe to study TV developments; on his return he joined the Radio Corporation of America (RCA) as Director of the Electronics Research Group, first at Camden and then Princeton, New Jersey. Securing a budget to develop an improved CRT picture tube, he soon produced a kinescope with a hard vacuum, an indirectly heated cathode, a signal-modulation grid and electrostatic focusing. In 1933 an improved iconoscope camera tube was produced, and under his direction RCA went on to produce other improved types of camera tube, including the image iconoscope, the orthicon and image orthicon and the vidicon. The secondary-emission effect used in many of these tubes was also used in a scintillation radiation counter. In 1941 he was responsible for the development of the first industrial electron microscope, but for most of the Second World War he directed work concerned with radar, aircraft fire-control and TV-guided missiles.
    After the war he worked for a time on high-speed memories and medical electronics, becoming Vice-President and Technical Consultant in 1947. He "retired" from RCA and was made an honorary vice-president in 1954, but he retained an office and continued to work there almost up until his death; he also served as Director of the Rockefeller Institute for Medical Research from 1954 until 1962.
    [br]
    Principal Honours and Distinctions
    Zworykin received some twenty-seven awards and honours for his contributions to television engineering and medical electronics, including the Institution of Electrical Engineers Faraday Medal 1965; US Medal of Science 1966; and the US National Hall of Fame 1977.
    Bibliography
    29 December 1923, US patent no. 2,141, 059 (the original iconoscope patent; finally granted in December 1938!).
    13 July 1925, US patent no. 1,691, 324 (colour television system).
    1930, with D.E.Wilson, Photocells and Their Applications, New York: Wiley. 1934, "The iconoscope. A modern version of the electric eye". Proceedings of the
    Institute of Radio Engineers 22:16.
    1946, Electron Optics and the Electron Microscope.
    1940, with G.A.Morton, Television; revised 1954.
    Further Reading
    J.H.Udelson, 1982, The Great Television Race: History of the Television Industry 1925– 41: University of Alabama Press.
    KF

    Biographical history of technology > Zworykin, Vladimir Kosma

  • 5 Johari window

    HR
    a communication model that facilitates analysis of both how someone gives and receives information and the dynamics of interpersonal communication. The Johari window was developed by Joseph Luft and Henry Ingram. It is often represented in the form of a grid divided into four sections, each of which represents a type of communication exchange. First, there is the open self: you have awareness of the impact you have on the other and the impact they have on you, so that the risk of interpersonal conflict is minimized. The second sector covers the hidden self: you have awareness of your impact on others, but not of their impact on you. This leads to defensive behavior in which you seek to hide what you want and increases the possibility of interpersonal conflict. In the third sector, or blind self, you have awareness of what the other wants, but you lack self-awareness of the impact of your communication or actions. Finally, there is the undiscovered self: you lack selfawareness and are either unaware of or cannot understand the other. Although the Johari window can be used in a number of situations, it is most frequently used as a tool for training or coaching purposes, in order to provide feedback on communication skills.

    The ultimate business dictionary > Johari window

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