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1 radio propagation physics
RPP, radio propagation physicsEnglish-Russian dictionary of planing, cross-planing and slotting machines > radio propagation physics
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2 radio propagation physics
Военный термин: физика распространения радиоволнУниверсальный англо-русский словарь > radio propagation physics
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3 RPP
1) Медицина: rate-pressure product (ЭхоКГ)2) Американизм: Radiation Protection Program3) Военный термин: RAM Program Plan, Reliability Program Plan, radio propagation physics, rechargeable power pack, regional priority program, registered postal packet, rendezvous point position, requisition processing point4) Техника: radiation protection plan5) Юридический термин: Raid Participation Points6) Телекоммуникации: Receiving Party Pays7) Сокращение: Resonant Pipe Projector (Acoustic projector), Respiratory Protection Programs (to comply with 29 CFR 1910.134)8) Университет: Registration Pre Payment9) Вычислительная техника: Relative Processor Performance (CPU, Cray)11) Транспорт: Remotely Piloted Program12) Фирменный знак: Radiation Protection Products, Raven's Petz Place13) Налоги: Registered Pension Plan (в Канаде)14) СМИ: Real People Profile15) Полимеры: reinforced pyrolyzed plastic16) Пластмассы: Reinforced PolyPropylene17) AMEX. Stonehaven Realty Trust -
4 rpp
1) Медицина: rate-pressure product (ЭхоКГ)2) Американизм: Radiation Protection Program3) Военный термин: RAM Program Plan, Reliability Program Plan, radio propagation physics, rechargeable power pack, regional priority program, registered postal packet, rendezvous point position, requisition processing point4) Техника: radiation protection plan5) Юридический термин: Raid Participation Points6) Телекоммуникации: Receiving Party Pays7) Сокращение: Resonant Pipe Projector (Acoustic projector), Respiratory Protection Programs (to comply with 29 CFR 1910.134)8) Университет: Registration Pre Payment9) Вычислительная техника: Relative Processor Performance (CPU, Cray)11) Транспорт: Remotely Piloted Program12) Фирменный знак: Radiation Protection Products, Raven's Petz Place13) Налоги: Registered Pension Plan (в Канаде)14) СМИ: Real People Profile15) Полимеры: reinforced pyrolyzed plastic16) Пластмассы: Reinforced PolyPropylene17) AMEX. Stonehaven Realty Trust -
5 RPP
RPP, radio propagation physics————————RPP, rechargeable power pack————————RPP, regional priority program————————RPP, registered postal packet————————RPP, rendezvous point positionкоординаты точки [места] встречи————————RPP, requisition processing pointEnglish-Russian dictionary of planing, cross-planing and slotting machines > RPP
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6 CRPL
1) Техника: cosmic ray physics laboratory2) Сокращение: Central Radio Propagation Laboratory, chromium plate -
7 CRPL
1. Central Radio Propagation Laboratory - Центральная лаборатория распространения радиоволн;2. cosmic ray physics laboratory - лаборатория физики космического излучения -
8 Appleton, Sir Edward Victor
[br]b. 6 September 1892 Bradford, Englandd. 21 April 1965 Edinburgh, Scotland[br]English physicist awarded the Nobel Prize for Physics for his discovery of the ionospheric layer, named after him, which is an efficient reflector of short radio waves, thereby making possible long-distance radio communication.[br]After early ambitions to become a professional cricketer, Appleton went to St John's College, Cambridge, where he studied under J.J.Thompson and Ernest Rutherford. His academic career interrupted by the First World War, he served as a captain in the Royal Engineers, carrying out investigations into the propagation and fading of radio signals. After the war he joined the Cavendish Laboratory, Cambridge, as a demonstrator in 1920, and in 1924 he moved to King's College, London, as Wheatstone Professor of Physics.In the following decade he contributed to developments in valve oscillators (in particular, the "squegging" oscillator, which formed the basis of the first hard-valve time-base) and gained international recognition for research into electromagnetic-wave propagation. His most important contribution was to confirm the existence of a conducting ionospheric layer in the upper atmosphere capable of reflecting radio waves, which had been predicted almost simultaneously by Heaviside and Kennelly in 1902. This he did by persuading the BBC in 1924 to vary the frequency of their Bournemouth transmitter, and he then measured the signal received at Cambridge. By comparing the direct and reflected rays and the daily variation he was able to deduce that the Kennelly- Heaviside (the so-called E-layer) was at a height of about 60 miles (97 km) above the earth and that there was a further layer (the Appleton or F-layer) at about 150 miles (240 km), the latter being an efficient reflector of the shorter radio waves that penetrated the lower layers. During the period 1927–32 and aided by Hartree, he established a magneto-ionic theory to explain the existence of the ionosphere. He was instrumental in obtaining agreement for international co-operation for ionospheric and other measurements in the form of the Second Polar Year (1932–3) and, much later, the International Geophysical Year (1957–8). For all this work, which made it possible to forecast the optimum frequencies for long-distance short-wave communication as a function of the location of transmitter and receiver and of the time of day and year, in 1947 he was awarded the Nobel Prize for Physics.He returned to Cambridge as Jacksonian Professor of Natural Philosophy in 1939, and with M.F. Barnett he investigated the possible use of radio waves for radio-location of aircraft. In 1939 he became Secretary of the Government Department of Scientific and Industrial Research, a post he held for ten years. During the Second World War he contributed to the development of both radar and the atomic bomb, and subsequently served on government committees concerned with the use of atomic energy (which led to the establishment of Harwell) and with scientific staff.[br]Principal Honours and DistinctionsKnighted (KCB 1941, GBE 1946). Nobel Prize for Physics 1947. FRS 1927. Vice- President, American Institute of Electrical Engineers 1932. Royal Society Hughes Medal 1933. Institute of Electrical Engineers Faraday Medal 1946. Vice-Chancellor, Edinburgh University 1947. Institution of Civil Engineers Ewing Medal 1949. Royal Medallist 1950. Institute of Electrical and Electronics Engineers Medal of Honour 1962. President, British Association 1953. President, Radio Industry Council 1955–7. Légion d'honneur. LLD University of St Andrews 1947.Bibliography1925, joint paper with Barnett, Nature 115:333 (reports Appleton's studies of the ionosphere).1928, "Some notes of wireless methods of investigating the electrical structure of the upper atmosphere", Proceedings of the Physical Society 41(Part III):43. 1932, Thermionic Vacuum Tubes and Their Applications (his work on valves).1947, "The investigation and forecasting of ionospheric conditions", Journal of theInstitution of Electrical Engineers 94, Part IIIA: 186 (a review of British work on the exploration of the ionosphere).with J.F.Herd \& R.A.Watson-Watt, British patent no. 235,254 (squegging oscillator).Further ReadingWho Was Who, 1961–70 1972, VI, London: A. \& C.Black (for fuller details of honours). R.Clark, 1971, Sir Edward Appleton, Pergamon (biography).J.Jewkes, D.Sawers \& R.Stillerman, 1958, The Sources of Invention.KFBiographical history of technology > Appleton, Sir Edward Victor
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9 Eccles, William Henry
[br]b. 23 August 1875 Ulverston, Cumbria, Englandd. 27 April 1966 Oxford, England[br]English physicist who made important contributions to the development of radio communications.[br]After early education at home and at private school, Eccles won a scholarship to the Royal College of Science (now Imperial College), London, where he gained a First Class BSc in physics in 1898. He then worked as a demonstrator at the college and studied coherers, for which he obtained a DSc in 1901. Increasingly interested in electrical engineering, he joined the Marconi Company in 1899 to work on oscillators at the Poole experimental radio station, but in 1904 he returned to academic life as Professor of Mathematics and Physics and Department Head at South West Polytechnic, Chelsea. There he discovered ways of using the negative resistance of galena-crystal detectors to generate oscillations and gave a mathematical description of the operation of the triode valve. In 1910 he became Reader in Engineering at University College, London, where he published a paper explaining the reflection of radio waves by the ionosphere and designed a 60 MHz short-wave transmitter. From 1916 to 1926 he was Professor of Applied Physics and Electrical Engineering at the Finsbury City \& Guilds College and a private consulting engineer. During the First World War he was a military scientific adviser and Secretary to the Joint Board of Scientific Societies. After the war he made many contributions to electronic-circuit development, many of them (including the Eccles-Jordan "flip-flop" patented in 1918 and used in binary counters) in conjunction with F.W.Jordan, about whom little seems to be known. Illness forced Eccles's premature academic retirement in 1926, but he remained active as a consultant for many years.[br]Principal Honours and DistinctionsFRS 1921. President, Institution of Electrical Engineers, 1926–7. President, Physical Society 1929. President, Radio Society of Great Britain.Bibliography1912, "On the diurnal variation of the electric waves occurring in nature and on the propagation of electric waves round the bend of the earth", Proceedings of the Royal Society 87:79. 1919, with F.W.Jordan, "Method of using two triode valves in parallel for generating oscillations", Electrician 299:3.1915, Handbook of Wireless Telegraphy.1921, Continuous Wave Wireless Telegraphy.Further Reading1971, "William Henry Eccles, 1875–1966", Biographical Memoirs of the Royal Society, London, 17.KF -
10 De Forest, Lee
SUBJECT AREA: Broadcasting, Electronics and information technology, Photography, film and optics, Recording, Telecommunications[br]b. 26 August 1873 Council Bluffs, Iowa, USAd. 30 June 1961 Hollywood, California, USA[br]American electrical engineer and inventor principally known for his invention of the Audion, or triode, vacuum tube; also a pioneer of sound in the cinema.[br]De Forest was born into the family of a Congregational minister that moved to Alabama in 1879 when the father became President of a college for African-Americans; this was a position that led to the family's social ostracism by the white community. By the time he was 13 years old, De Forest was already a keen mechanical inventor, and in 1893, rejecting his father's plan for him to become a clergyman, he entered the Sheffield Scientific School of Yale University. Following his first degree, he went on to study the propagation of electromagnetic waves, gaining a PhD in physics in 1899 for his thesis on the "Reflection of Hertzian Waves from the Ends of Parallel Wires", probably the first US thesis in the field of radio.He then joined the Western Electric Company in Chicago where he helped develop the infant technology of wireless, working his way up from a modest post in the production area to a position in the experimental laboratory. There, working alone after normal working hours, he developed a detector of electromagnetic waves based on an electrolytic device similar to that already invented by Fleming in England. Recognizing his talents, a number of financial backers enabled him to set up his own business in 1902 under the name of De Forest Wireless Telegraphy Company; he was soon demonstrating wireless telegraphy to interested parties and entering into competition with the American Marconi Company.Despite the failure of this company because of fraud by his partners, he continued his experiments; in 1907, by adding a third electrode, a wire mesh, between the anode and cathode of the thermionic diode invented by Fleming in 1904, he was able to produce the amplifying device now known as the triode valve and achieve a sensitivity of radio-signal reception much greater than possible with the passive carborundum and electrolytic detectors hitherto available. Patented under the name Audion, this new vacuum device was soon successfully used for experimental broadcasts of music and speech in New York and Paris. The invention of the Audion has been described as the beginning of the electronic era. Although much development work was required before its full potential was realized, the Audion opened the way to progress in all areas of sound transmission, recording and reproduction. The patent was challenged by Fleming and it was not until 1943 that De Forest's claim was finally recognized.Overcoming the near failure of his new company, the De Forest Radio Telephone Company, as well as unsuccessful charges of fraudulent promotion of the Audion, he continued to exploit the potential of his invention. By 1912 he had used transformer-coupling of several Audion stages to achieve high gain at radio frequencies, making long-distance communication a practical proposition, and had applied positive feedback from the Audion output anode to its input grid to realize a stable transmitter oscillator and modulator. These successes led to prolonged patent litigation with Edwin Armstrong and others, and he eventually sold the manufacturing rights, in retrospect often for a pittance.During the early 1920s De Forest began a fruitful association with T.W.Case, who for around ten years had been working to perfect a moving-picture sound system. De Forest claimed to have had an interest in sound films as early as 1900, and Case now began to supply him with photoelectric cells and primitive sound cameras. He eventually devised a variable-density sound-on-film system utilizing a glow-discharge modulator, the Photion. By 1926 De Forest's Phonofilm had been successfully demonstrated in over fifty theatres and this system became the basis of Movietone. Though his ideas were on the right lines, the technology was insufficiently developed and it was left to others to produce a system acceptable to the film industry. However, De Forest had played a key role in transforming the nature of the film industry; within a space of five years the production of silent films had all but ceased.In the following decade De Forest applied the Audion to the development of medical diathermy. Finally, after spending most of his working life as an independent inventor and entrepreneur, he worked for a time during the Second World War at the Bell Telephone Laboratories on military applications of electronics.[br]Principal Honours and DistinctionsInstitute of Electronic and Radio Engineers Medal of Honour 1922. President, Institute of Electronic and Radio Engineers 1930. Institute of Electrical and Electronics Engineers Edison Medal 1946.Bibliography1904, "Electrolytic detectors", Electrician 54:94 (describes the electrolytic detector). 1907, US patent no. 841,387 (the Audion).1950, Father of Radio, Chicago: WIlcox \& Follett (autobiography).De Forest gave his own account of the development of his sound-on-film system in a series of articles: 1923. "The Phonofilm", Transactions of the Society of Motion Picture Engineers 16 (May): 61–75; 1924. "Phonofilm progress", Transactions of the Society of Motion Picture Engineers 20:17–19; 1927, "Recent developments in the Phonofilm", Transactions of the Society of Motion Picture Engineers 27:64–76; 1941, "Pioneering in talking pictures", Journal of the Society of Motion Picture Engineers 36 (January): 41–9.Further ReadingG.Carneal, 1930, A Conqueror of Space (biography).I.Levine, 1964, Electronics Pioneer, Lee De Forest (biography).E.I.Sponable, 1947, "Historical development of sound films", Journal of the Society of Motion Picture Engineers 48 (April): 275–303 (an authoritative account of De Forest's sound-film work, by Case's assistant).W.R.McLaurin, 1949, Invention and Innovation in the Radio Industry.C.F.Booth, 1955, "Fleming and De Forest. An appreciation", in Thermionic Valves 1904– 1954, IEE.V.J.Phillips, 1980, Early Radio Detectors, London: Peter Peregrinus.KF / JW -
11 network
1) сетьа) локальная, региональная или глобальная вычислительная сетьб) коммуникационная сеть; сеть связи (напр. телефонная)в) сеть вещательных станций (напр. телевизионных)д) замкнутая совокупность функционально однотипных организаций или предприятийе) способ представления знаний в виде связного орграфа в системе искусственного интеллектаж) сетка2) работать в сети; обмениваться информацией с помощью сети; использовать сеть или сети3) создавать сеть или сети; покрывать сетью (напр. вещательных станций) определённую территорию4) плести сеть или сетку; применять сеть или сетку; образовывать сеть или сетку5) схема; цепь; контур•- networks of limited equivalence
- network of microcomputer
- abstract semantic network
- active network
- activity network
- adaptive network
- adaptive resonance theory network
- additive Grossberg network - aperiodic network
- ART network
- artificial mains network - asynchronous neural network - back propagation network
- back-up radio network
- balanced network
- balanced Feistel network
- balancing network
- BAM network
- banner network
- baseband network
- basic network
- Bayes network
- beam-forming network - biconjugate network
- bidirectional associative memory network
- bilateral network
- biological neural network
- Boltzman machine neural network
- Boolean network
- brain-state-in-a-box network
- bridge network
- bridged-T network - bus network
- butterfly network
- C-network
- cellular neural network
- cellular radio network
- channel-switching network
- chaotic neural network - circuit-switching network
- class A-network
- class B-network
- class C-network
- client-server network
- closed private network - common-user network
- communications network
- company network
- compromise network
- computer network - connected network
- connectionist network
- connectionless network
- connection-oriented network
- constant-K network
- constant-M network
- continuous Hopfield network
- corrective network
- countable network - coupling network
- crossover network
- customer-access network
- data network
- data transmission network
- decoding network
- decoupling network
- dedicated network
- deemphasis network
- deep-space network
- delta network
- demand-assigned network
- dial-up network
- difference network
- differentiated network
- differentiating network
- digipeater network
- digital communication network
- digital satellite network
- digital switching network - discrete Hopfield network
- dislocation network
- dissymmetrical network
- distributed network
- distributed operating multi-access interactive-network
- distributed parameter network
- dividing network
- Doba's network
- dual network
- edge-dislocation network
- eight-pole network
- eight-terminal network
- electric network - equivalent networks - extensional semantic network
- extensive network - feedback network
- feedforward network
- Feistel network - fixer network
- four-pole network
- four-terminal network
- fractal network
- frequency-dependent negative-resistance network
- fully connected network
- fully connected neural network
- full mesh network
- full meshed network
- fuzzy neural network
- generalized additive network - ground-station network - Hamiltonian neural network
- Hamming's neural network
- Hebb network
- Hecht-Nielsen network
- Hecht-Nielsen neural network
- heterogeneous network
- heterogeneous neural network
- high-capacity network - higher-order neural network
- homogeneous network
- homogeneous neural network
- Hopfield's neural network
- Hopfield-Tank network
- Hopfield-Tank neural network
- hybrid network
- inductance network
- inductance-capacitance network
- inductance-resistance network
- industrial district network
- information network
- in-office network of links - Internet relay chat network
- inter-organizational network
- interstage network
- inverse networks
- IRC network
- irredundant network
- isolation network
- L-network
- ladder network - lattice network
- lead network
- leased-line network
- linear network - load-matching network - long-distance network
- long-haul network
- loop network
- loudspeaker dividing network
- lumped network
- lumped-constant network
- lumped-distributed network
- Kohonen network
- Kohonen self-organizing network
- Kosko network
- Kosko neural network
- learning vector quantization network
- LVQ network
- Markovian network
- matching network
- McCulloch-Pitts network
- merging network
- mesh network
- meshed network
- message-switched network
- metropolitan area network
- mid-level network
- minimum-phase network
- MPLS network
- multiaccess network
- multi-attractor network
- multidimensional network
- multidrop network
- multifractal network
- multiinput-multioutput network
- multilayer neuron network
- multiple-access network
- multiply-connected network
- multipoint network
- multiport network
- multiprotocol label switching network - multistage switching network
- multistar network
- multistation network
- multisystem network
- multiterminal network
- multiterminal-pair network
- municipal area network - neural network with local connections
- neural-like network
- nodal network
- nonlinear network
- nonplanar network
- nonreciprocal network
- nonuniformly distributed network
- notch network
- n-pole network
- n-port network
- n-terminal network
- n-terminal pair network
- O-network
- one-port network
- optical network
- optical fiber network
- optical neural network
- originating switching network
- packet commutation network - packet satellite network
- packet switch network
- packet switching network
- paging network
- parallel network
- parallel-T network
- parallel two-terminal pair networks
- partial mesh network
- partial meshed network
- passive network
- peaking network
- peer-to-peer network
- perceptron-type network
- percolation network
- personal communication network
- phase-advance network
- phase-shifting network
- phase-splitting network
- phasing network
- pi-network
- piece-linear network
- pilot wire controlled network
- planar network
- polarization matching network
- power distribution network
- preassigned network
- preemphasis network
- private network
- private-line intercity network - quadrupole network - radar network
- radio network
- radio access network
- radio intercom network
- radio-relay network
- rearrangeable network
- reciprocal network
- recognition network
- recurrent neural network
- regression neural network
- repeater network
- replicative neural network
- research network
- resistance-capacitance network
- resistive network
- resource-sharing computer-communication-network
- ring-switched computer network
- routing network
- satellite-earth stations network - second-order network
- selective network
- semantic network
- semiconductor network
- series network
- series-peaking network
- series-shunt network
- series-shunt peaking network
- shaping network
- short-haul network
- shuffle network
- shunt network
- shunt-peaking network
- signal-shaping network
- single-layer neural network
- singly terminated network - sorting network
- speaker dividing network
- stabilization network
- star network
- statistical Hopfield's network
- statistical Hopfield's neural network
- steering network - strategic network
- structurally dual networks
- structurally symmetrical networks
- stub network
- summation network
- summing network
- support network
- switched network
- switched message network
- switched telecommunications network
- switching network
- synchronous network
- synchronous neural network - T-network
- tapered distribution network
- technologies support network
- telecommunication network - terminating switching network - token bus network
- Token Ring network
- token ring network
- transit network
- transmission network
- transputer network
- tree network - trusted network
- twin-T network
- two-pole network
- two-port network
- two-terminal network
- two-terminal-pair network
- unbalanced Feistel network
- undersea network
- uniformly distributed network
- unilateral network
- universal network
- untrained neural network - world-wide communication network
- WS network
- X-network
- Y-network
- π-network -
12 network
1) сетьа) локальная, региональная или глобальная вычислительная сетьб) коммуникационная сеть; сеть связи (напр. телефонная)в) сеть вещательных станций (напр. телевизионных)д) замкнутая совокупность функционально однотипных организаций или предприятийе) способ представления знаний в виде связного орграфа в системе искусственного интеллектаж) сетка2) работать в сети; обмениваться информацией с помощью сети; использовать сеть или сети3) создавать сеть или сети; покрывать сетью (напр. вещательных станций) определённую территорию4) плести сеть или сетку; применять сеть или сетку; образовывать сеть или сетку5) схема; цепь; контур•- abstract semantic network
- active network
- activity network
- adaptive network
- adaptive resonance theory network
- additive Grossberg network
- advanced intelligent network
- advertiser network
- aeronautical fixed telecommunications network
- all-pass network
- aperiodic network
- ART network
- artificial mains network
- artificial neural network
- asynchronous network
- asynchronous neural network
- attached resource computer network
- attenuation network
- automatic digital network
- automatic voice network
- back propagation network
- backbone network
- back-up radio network
- balanced Feistel network
- balanced network
- balancing network
- BAM network
- banner network
- baseband network
- basic network
- Bayes network
- beam-forming network
- because it's time network
- Benetton network
- biconjugate network
- bidirectional associative memory network
- bilateral network
- biological neural network
- Boltzman machine neural network
- Boolean network
- brain-state-in-a-box network
- bridge network
- bridged-T network
- broadband communication network
- broadband integrated services digital network
- building-out network
- bus network
- butterfly network
- C network
- cellular neural network
- cellular radio network
- channel-switching network
- chaotic neural network
- charge-routing network
- circuit-switched data network
- circuit-switched public data network
- circuit-switching network
- class A network
- class B network
- class C network
- client-server network
- closed private network
- combinatorial network
- commercial network
- common-user network
- communications network
- company network
- compromise network
- computer + science network
- computer network
- concatenated network
- conferencing network
- connected network
- connectionist network
- connectionless network
- connection-oriented network
- constant-K network
- constant-M network
- continuous Hopfield network
- corrective network
- countable network
- counterpropagation network
- coupled-line network
- coupling network
- crossover network
- customer-access network
- data network
- data transmission network
- decoding network
- decoupling network
- dedicated network
- deemphasis network
- deep-space network
- delta network
- demand-assigned network
- dial-up network
- difference network
- differentiated network
- differentiating network
- digipeater network
- digital communication network
- digital satellite network
- digital switching network
- digital time-division network
- directed network
- discrete Hopfield network
- dislocation network
- dissymmetrical network
- distributed network
- distributed operating multi-access interactive network
- distributed parameter network
- dividing network
- Doba's network
- dual network
- edge-dislocation network
- eight-pole network
- eight-terminal network
- electric network
- electronic space-division analog network
- elementary digital network
- equalizing network
- equivalent networks
- European academic and research network
- European Unix network
- exponential network
- extensional semantic network
- extensive network
- fast neural network
- FDNR network
- feedback network
- feedforward network
- Feistel network
- FIDO technology network
- firm network
- fixer network
- four-pole network
- four-terminal network
- fractal network
- frequency-dependent negative-resistance network
- full mesh network
- full meshed network
- fully connected network
- fully connected neural network
- fuzzy neural network
- general regression neural network
- generalized additive network
- global area network
- ground-station network
- ground-wave emergency network
- H network
- Hamiltonian neural network
- Hamming's neural network
- Hebb network
- Hecht-Nielsen network
- Hecht-Nielsen neural network
- heterogeneous network
- heterogeneous neural network
- high energy physics network
- high-capacity network
- higher-order network
- higher-order neural network
- homogeneous network
- homogeneous neural network
- Hopfield's neural network
- Hopfield-Tank network
- Hopfield-Tank neural network
- hybrid network
- inductance network
- inductance-capacitance network
- inductance-resistance network
- industrial district network
- information network
- in-office network of links
- integrated broadband communication network
- integrated business network
- integrated digital network
- integrated enterprise network
- integrated services digital network
- integrating network
- intelligent network
- intelligent optical network
- intercom network
- Internet relay chat network
- inter-organizational network
- interstage network
- inverse networks
- IRC network
- irredundant network
- isolation network
- Kohonen network
- Kohonen self-organizing network
- Kosko network
- Kosko neural network
- L network
- ladder network
- LAN outer network
- land network
- lattice network
- lead network
- learning vector quantization network
- leased-line network
- linear integrated network
- linear network
- linear varying parameter network
- load-matching network
- local area network
- local computer network
- long-distance network
- long-haul network
- loop network
- loudspeaker dividing network
- lumped network
- lumped-constant network
- lumped-distributed network
- LVQ network
- Markovian network
- matching network
- McCulloch-Pitts network
- merging network
- mesh network
- meshed network
- message-switched network
- metropolitan area network
- mid-level network
- minimum-phase network
- MPLS network
- multiaccess network
- multi-attractor network
- multidimensional network
- multidrop network
- multifractal network
- multiinput-multioutput network
- multilayer neuron network
- multiple-access network
- multiply-connected network
- multipoint network
- multiport network
- multiprotocol label switching network
- multiprotocol transport network
- multiservice network
- multistage switching network
- multistar network
- multistation network
- multisystem network
- multiterminal network
- multiterminal-pair network
- municipal area network
- national information network
- network of microcomputer
- networks of limited equivalence
- networks ot general equivalence
- neural network with local connections
- neural network
- neural-like network
- nodal network
- nonlinear network
- nonplanar network
- nonreciprocal network
- nonuniformly distributed network
- notch network
- n-pole network
- n-port network
- n-terminal network
- n-terminal pair network
- one-port network
- O-network
- optical fiber network
- optical network
- optical neural network
- originating switching network
- packet commutation network
- packet data network
- packet radio network
- packet satellite network
- packet switch network
- packet switching network
- paging network
- parallel network
- parallel two-terminal pair networks
- parallel-T network
- partial mesh network
- partial meshed network
- passive network
- peaking network
- peer-to-peer network
- perceptron-type network
- percolation network
- personal communication network
- phase-advance network
- phase-shifting network
- phase-splitting network
- phasing network
- piece-linear network
- pilot wire controlled network
- pi-network
- planar network
- polarization matching network
- power distribution network
- preassigned network
- preemphasis network
- private network
- private-line intercity network
- probabilistic neural network
- projection pursuit network
- public data network
- public land mobile network
- public switched network
- public switched telephone network
- public telegraph network
- public telephone network
- pulse-forming network
- quadripole network
- quadrupole network
- quantum neural network
- queuing network
- radar network
- radio access network
- radio intercom network
- radio network
- radio-relay network
- rearrangeable network
- reciprocal network
- recognition network
- recurrent neural network
- regression neural network
- repeater network
- replicative neural network
- research network
- resistance-capacitance network
- resistive network
- resource-sharing computer-communication network
- ring-switched computer network
- routing network
- satellite tracking and data acquisition network
- satellite-earth stations network
- screw-dislocation network
- second-order network
- selective network
- semantic network
- semiconductor network
- series network
- series-peaking network
- series-shunt network
- series-shunt peaking network
- shaping network
- short-haul network
- shuffle network
- shunt network
- shunt-peaking network
- signal-shaping network
- single-layer neural network
- singly terminated network
- small business network
- social network
- software defined network
- solid-state network
- sorting network
- speaker dividing network
- stabilization network
- star network
- statistical Hopfield's network
- statistical Hopfield's neural network
- steering network
- storage area network
- store-and-forward network
- strategic network
- structurally dual networks
- structurally symmetrical networks
- stub network
- summation network
- summing network
- support network
- switched message network
- switched network
- switched telecommunications network
- switching network
- synchronous network
- synchronous neural network
- synchronous optical network
- systolic network
- tapered distribution network
- technologies support network
- telecommunication network
- telecommunications management network
- teletype network
- terminating switching network
- time delay neural network
- time-division analog network
- time-invariant network
- T-network
- token bus network
- Token Ring network
- token ring network
- transit network
- transmission network
- transputer network
- tree network
- trimming resistive network
- trunk network
- trusted network
- twin-T network
- two-pole network
- two-port network
- two-terminal network
- two-terminal-pair network
- unbalanced Feistel network
- undersea network
- uniformly distributed network
- unilateral network
- universal network
- untrained neural network
- user network
- value-added network
- virtual private network
- weighting network
- wide area network
- wireless intelligent network
- wireless local area network
- wireless wide area network
- work station network
- world-wide communication network
- WS network
- X-network
- Y-networkThe New English-Russian Dictionary of Radio-electronics > network
-
13 Maxwell, James Clerk
[br]b. 13 June 1831 Edinburgh, Scotlandd. 5 November 1879 Cambridge, England[br]Scottish physicist who formulated the unified theory of electromagnetism, the kinetic theory of gases and a theory of colour.[br]Maxwell attended school at the Edinburgh Academy and at the age of 16 went on to study at Edinburgh University. In 1850 he entered Trinity College, Cambridge, where he graduated four years later as Second Wrangler with the award of the Smith's Prize. Two years later he was appointed Professor at Marischal College, Aberdeen, where he married the Principal's daughter. In 1860 he moved to King's College London, but on the death of his father five years later, Maxwell returned to the family home in Scotland, where he continued his researches as far as the life of a gentleman farmer allowed. This rural existence was interrupted in 1874 when he was persuaded to accept the chair of Cavendish Professor of Experimental Physics at Cambridge. Unfortunately, in 1879 he contracted the cancer that brought his brilliant career to an untimely end. While at Cambridge, Maxwell founded the Cavendish Laboratory for research in physics. A succession of distinguished physicists headed the laboratory, making it one of the world's great centres for notable discoveries in physics.During the mid-1850s, Maxwell worked towards a theory to explain electrical and magnetic phenomena in mathematical terms, culminating in 1864 with the formulation of the fundamental equations of electromagnetism (Maxwell's equations). These equations also described the propagation of light, for he had shown that light consists of transverse electromagnetic waves in a hypothetical medium, the "ether". This great synthesis of theories uniting a wide range of phenomena is worthy to set beside those of Sir Isaac Newton and Einstein. Like all such syntheses, it led on to further discoveries. Maxwell himself had suggested that light represented only a small part of the spectrum of electromagnetic waves, and in 1888 Hertz confirmed the discovery of another small part of the spectrum, radio waves, with momentous implications for the development of telecommunication technology. Maxwell contributed to the kinetic theory of gases, which by then were viewed as consisting of a mass of randomly moving molecules colliding with each other and with the walls of the containing vessel. From 1869 Maxwell applied statistical methods to describe the molecular motion in mathematical terms. This led to a greater understanding of the behaviour of gases, with important consequences for the chemical industry.Of more direct technological application was Maxwell's work on colour vision, begun in 1849, showing that all colours could be derived from the three primary colours, red, yellow and blue. This enabled him in 1861 to produce the first colour photograph, of a tartan. Maxwell's discoveries about colour vision were quickly taken up and led to the development of colour printing and photography.[br]BibliographyMost of his technical papers are reprinted in The Scientific Papers of J.Clerk Maxwell, 1890, ed. W.D.Niven, Cambridge, 2 vols; reprinted 1952, New York.Maxwell published several books, including Theory of Heat, 1870, London (1894, 11th edn, with notes by Lord Rayleigh) and Theory of Electricity and Magnetism, 1873, Oxford (1891, ed. J.J.Thomson, 3rd edn).Further ReadingL.Campbell and W.Garnett, 1882, The Life of James Clerk Maxwell, London (the standard biography).J.J.Thomson (ed.), 1931, James Clerk Maxwell 1831–1931, Cambridge. J.G.Crowther, 1932, British Scientists of the Nineteenth Century, London.LRD
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