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nPHYS capa de Kennelly-Heaviside fEnglish-Spanish technical dictionary > Kennelly-Heaviside layer
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English-german technical dictionary > Kennelly-Heaviside layer
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Большой англо-русский и русско-английский словарь > Kennelly-Heaviside layer
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Англо-русский словарь технических терминов > Kennelly-Heaviside layer
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English-Russian dictionary of geology > Kennelly-Heaviside layer
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1) Геология: слой Кеннелли-Хэвисайда (ионизированный слой атмосферы)2) Техника: слой E (ионосферы)3) Космонавтика: слой Кеннеди-Хевисайда, слой Хевисайда, слой е ионосферы4) Макаров: слой E ионосферы, слой Хевисайда-КеннелиУниверсальный англо-русский словарь > Kennelly-Heaviside layer
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English-russian dictionary of physics > Kennelly-Heaviside layer
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English-Russian electronics dictionary > Kennelly-Heaviside layer
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The New English-Russian Dictionary of Radio-electronics > Kennelly-Heaviside layer
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14 kennelly heaviside layer
கென்னலி ஹெவிசைடு அடுக்கு -
15 kennelly-heaviside layer
கென்னெலியெவிசைட்டரடுக்கு -
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English-russian astronautics dictionary > Kennelly-Heaviside layer
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English-Ukrainian dictionary of aviation terms > Kennelly-Heaviside layer
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19 Heaviside, Oliver
[br]b. 18 May 1850 London, Englandd. 2 February 1925 Torquay, Devon, England[br]English physicist who correctly predicted the existence of the ionosphere and its ability to reflect radio waves.[br]Brought up in poor, almost Dickensian, circumstances, at the age of 13 years Heaviside, a nephew by marriage of Sir Charles Wheatstone, went to Camden House Grammar School. There he won a medal for science, but he was forced to leave because his parents could not afford the fees. After a year of private study, he began his working life in Newcastle in 1870 as a telegraph operator for an Anglo-Dutch cable company, but he had to give up after only four years because of increasing deafness. He therefore proceeded to spend his time studying theoretical aspects of electrical transmission and communication, and moved to Devon with his parents in 1889. Because the operation of many electrical circuits involves transient phenomena, he found it necessary to develop what he called operational calculus (which was essentially a form of the Laplace transform calculus) in order to determine the response to sudden voltage and current changes. In 1893 he suggested that the distortion that occurred on long-distance telephone lines could be reduced by adding loading coils at regular intervals, thus creating a matched-transmission line. Between 1893 and 1912 he produced a series of writings on electromagnetic theory, in one of which, anticipating a conclusion of Einstein's special theory of relativity, he put forward the idea that the mass of an electric charge increases with its velocity. When it was found that despite the curvature of the earth it was possible to communicate over very great distances using radio signals in the so-called "short" wavebands, Heaviside suggested the presence of a conducting layer in the ionosphere that reflected the waves back to earth. Since a similar suggestion had been made almost at the same time by Arthur Kennelly of Harvard, this layer became known as the Kennelly-Heaviside layer.[br]Principal Honours and DistinctionsFRS 1891. Institution of Electrical Engineers Faraday Medal 1924. Honorary PhD Gottingen. Honorary Member of the American Association for the Advancement of Science.Bibliography1872. "A method for comparing electro-motive forces", English Mechanic (July).1873. Philosophical Magazine (February) (a paper on the use of the Wheatstone Bridge). 1889, Electromagnetic Waves.1892, Electrical Papers.1893–1912, Electromagnetic Theory.Further ReadingI.Catt (ed.), 1987, Oliver Heaviside, The Man, St Albans: CAM Publishing.P.J.Nahin, 1988, Oliver Heaviside, Sage in Solitude: The Life and Works of an Electrical Genius of the Victorian Age, Institute of Electrical and Electronics Engineers, New York.J.B.Hunt, The Maxwellians, Ithaca: Cornell University Press.See also: Appleton, Sir Edward VictorKF -
20 Kennelly, Arthur Edwin
[br]b. 17 December 1871 Colaba, Bombay, Indiad. 18 June 1939 Boston, Massachusetts, USA[br]Anglo-American electrical engineer who predicted the ionosphere and developed mathematical analysis for electronic circuits.[br]As a young man, Kennelly worked as office boy for a London engineering society, as an electrician and on a cable-laying ship. In 1887 he went to work for Thomas Edison at West Orange, New Jersey, USA, becoming his chief assistant. In 1894, with Edwin J.Houston, he formed the Philadelphia company of Houston and Kennelly, but eight years later he took up the Chair of Electrical Engineering at Harvard, a post he held until his retirement in 1930. In 1902 he noticed that the radio signals received by Marconi in Nova Scotia from the transmitter in England were stronger than predicted and postulated a reflecting ionized layer in the upper atmosphere. Almost simultaneously the same prediction was made in England by Heaviside, so the layer became known as the Kennelly-Heaviside layer. Throughout most of his working life Kennelly was concerned with the application of mathematical techniques, particularly the use of complex theory, to the analysis of electrical circuits. With others he also contributed to an understanding of the high-frequency skin-effect in conductors.[br]Principal Honours and DistinctionsPresident, American Institute of Electrical Engineers 1898–1900. President, Institution of Electrical Engineers 1916. Institute of Electrical and Electronics Engineers Medal of Honour 1932; Edison Medal 1933.Bibliography1915, with F.A.Laws \& P.H.Pierce "Experimental research on the skin effect in conductors", Transactions of the American Institute of Electrical Engineers 34:1,953.1924, Hyperbolic Functions as Applied to Electrical Engineering.1924, Check Atlas of Complex Hyperbolic \& Circular Functions (both on mathematics for circuit analysis).Further ReadingK.Davies, 1990, Ionospheric Radio, London: Peter Peregrinus. See also Appleton, Sir Edward Victor.KF
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См. также в других словарях:
Kennelly-Heaviside layer — [ken′əl ē hev′ē sīd΄] n. [after A. Kennelly (1861 1939), U.S. electrical engineer & O. Heaviside (1850 1925), Eng physicist] E LAYER … English World dictionary
Kennelly-Heaviside layer — The Kennelly Heaviside layer, also known as the E region or simply the Heaviside layer, is a layer of ionised gas occurring at 90 ndash;150 km above the ground mdash; one of several layers in the Earth s ionosphere. It reflects medium frequency… … Wikipedia
Kennelly-Heaviside layer — noun a region of the ionosphere (from 50 to 90 miles up) that reflects radio waves of medium length • Syn: ↑Heaviside layer, ↑E layer, ↑E region • Instance Hypernyms: ↑region, ↑part • Part Holonyms: ↑ … Useful english dictionary
Kennelly-Heaviside layer — /ken l ee hev ee suyd /. Physics. See E layer. [1920 25; named after Arthur Edwin Kennelly (1861 1939), U.S. electrical engineer, and O. HEAVISIDE] * * * … Universalium
Heaviside layer — A layer of ionized particles that surrounds the earth. The layer, also called the E layer, has ionization of around 106 free electrons. The layer is found at a height of around 60 to 90 miles (100 150 km), but its height varies according to the… … Aviation dictionary
Heaviside layer — /ˈhɛvisaɪd leɪə/ (say heveesuyd layuh) noun the lower region, or regions, of the ionosphere chiefly responsible for the reflection of radio waves of certain frequencies, thus making long distance radio communication possible. Also, E layer,… …
Kennelly-Heaviside-Schicht — Ionosphärenschichten (engl. Layer) in Abhängigkeit von der Tageszeit Die Kennelly Heaviside Schicht, auch E Schicht genannt, ist ein Teil der Ionosphäre der Erde. Sie ist eine der Schichten der Ionosphäre an denen kurzwellige Radiosignale… … Deutsch Wikipedia
Capa Kennelly-Heaviside — Saltar a navegación, búsqueda Capas de la ionosfera terrestre. La capa E aparece tanto de día como de noche. La capa Kennelly Heaviside, también conocida como región E o simplemente capa Heaviside , es una capa de gas ioniza … Wikipedia Español
Heaviside layer — (also Heaviside–Kennelly layer) noun another name for E layer. Origin early 20th cent.: named after the English physicist Oliver Heaviside and the American engineer Arthur E. Kennelly … English new terms dictionary
Heaviside layer — n. (in full Heaviside Kennelly layer) = E LAYER. Etymology: O. Heaviside, Engl. physicist d. 1925, and A. E. Kennelly, US physicist d. 1939 … Useful english dictionary
Kennelly — is a surname and may refer to:* Ardyth Kennelly, American novelist * Arthur Edwin Kennelly, American engineer * Barbara B. Kennelly, Connecticut Representative * Brendan Kennelly, Irish poet and novelist * Keala Kennelly, American surfer * Martin … Wikipedia