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121 Hopkinson, John
[br]b. 27 July 1849 Manchester, Englandd. 27 August 1898 Petite Dent de Veisivi, Switzerland[br]English mathematician and electrical engineer who laid the foundations of electrical machine design.[br]After attending Owens College, Manchester, Hopkinson was admitted to Trinity College, Cambridge, in 1867 to read for the Mathematical Tripos. An appointment in 1872 with the lighthouse department of the Chance Optical Works in Birmingham directed his attention to electrical engineering. His most noteworthy contribution to lighthouse engineering was an optical system to produce flashing lights that distinguished between individual beacons. His extensive researches on the dielectric properties of glass were recognized when he was elected to a Fellowship of the Royal Society at the age of 29. Moving to London in 1877 he became established as a consulting engineer at a time when electricity supply was about to begin on a commercial scale. During the remainder of his life, Hopkinson's researches resulted in fundamental contributions to electrical engineering practice, dynamo design and alternating current machine theory. In making a critical study of the Edison dynamo he developed the principle of the magnetic circuit, a concept also arrived at by Gisbert Kapp around the same time. Hopkinson's improvement of the Edison dynamo by reducing the length of the field magnets almost doubled its output. In 1890, in addition to-his consulting practice, Hopkinson accepted a post as the first Professor of Electrical Engineering and Head of the Siemens laboratory recently established at King's College, London. Although he was not involved in lecturing, the position gave him the necessary facilities and staff and student assistance to continue his researches. Hopkinson was consulted on many proposals for electric traction and electricity supply, including schemes in London, Manchester, Liverpool and Leeds. He also advised Mather and Platt when they were acting as contractors for the locomotives and generating plant for the City and South London tube railway. As early as 1882 he considered that an ideal method of charging for the supply of electricity should be based on a two-part tariff, with a charge related to maximum demand together with a charge for energy supplied. Hopkinson was one the foremost expert witnesses of his day in patent actions and was himself the patentee of over forty inventions, of which the three-wire system of distribution and the series-parallel connection of traction motors were his most successful. Jointly with his brother Edward, John Hopkinson communicated the outcome of his investigations to the Royal Society in a paper entitled "Dynamo Electric Machinery" in 1886. In this he also described the later widely used "back to back" test for determining the characteristics of two identical machines. His interest in electrical machines led him to more fundamental research on magnetic materials, including the phenomenon of recalescence and the disappearance of magnetism at a well-defined temperature. For his work on the magnetic properties of iron, in 1890 he was awarded the Royal Society Royal Medal. He was a member of the Alpine Club and a pioneer of rock climbing in Britain; he died, together with three of his children, in a climbing accident.[br]Principal Honours and DistinctionsFRS 1878. Royal Society Royal Medal 1890. President, Institution of Electrical Engineers 1890 and 1896.Bibliography7 July 1881, British patent no. 2,989 (series-parallel control of traction motors). 27 July 1882, British patent no. 3,576 (three-wire distribution).1901, Original Papers by the Late J.Hopkinson, with a Memoir, ed. B.Hopkinson, 2 vols, Cambridge.Further ReadingJ.Greig, 1970, John Hopkinson Electrical Engineer, London: Science Museum and HMSO (an authoritative account).—1950, "John Hopkinson 1849–1898", Engineering 169:34–7, 62–4.GW -
122 ET
1) Общая лексика: hum. сокр. Embryo Transfer, hum. сокр. Embryo Transplant2) Компьютерная техника: exchange termination3) Авиация: ground controller approach, electronic ticket4) Медицина: endothelin5) Американизм: Equal Time6) Спорт: End Time7) Военный термин: Earth Terminal, Electronic Trigger, Embedded Training, Enhanced Terminal, European theater, Extra Tanked, educational training, elapsed time, electronic technology, emergency takeover, emerging technologies, employment testing, engineer training, engineering test, equipment test, equivalent training, estimated time, estimation techniques, evaluation test, experiment test, exploratory technique, explosive technology, explosive train8) Техника: Electric Toothbrush, earliest time, eddy current test, electric telegraph, electron tube, electronics test, emergency tank, end of tape, environmental testing, executive team, extraction turbine, клемма заземления9) Математика: Evaluated Tuples10) Бухгалтерия: Code of Professional Conduct, наиболее ранний срок (появления события в системе ПЕРТ, earliest time)11) Астрономия: extraterrestrial, внеземной12) Металлургия: Equal Taper13) Оптика: ephemeris time14) Политика: Ethiopia15) Сокращение: Civil aircraft marking (Ethiopia), Electronic Timer, Electronics Technician, Electrothermal, Embedded Trainer, English translation, Estonian, Ethiopia (NATO country code), ExaByte (quintillion), External Tank, Extra Terrestrial, edge thickness, electrical time, emerging technology, Eastern Time (GMT - 0500), emission trading (официальный термин в Киотском протоколе)16) Текстиль: Extra Tall17) Университет: Education Technology, Environmental Technology, Extra Time18) Физиология: And, Equal Temperament, EsoTropia, Evapo Transpiration, Extra Testicular19) Вычислительная техника: Eastern Time, ElectroText, (Shuttle) External Tank (Space), Extra Terrestrial (Space)20) Иммунология: Experimental Therapeutics21) Гинекология: embryo transfer22) Биотехнология: Early Transposon23) Транспорт: Easy Traction, Electric Traction24) Пищевая промышленность: Extra Tasty25) Фирменный знак: Electronic Research, England Telecom26) Холодильная техника: evaporating temperature27) Экология: Ecological Transport, environmental test, evapotranspiration28) СМИ: Expressed Transcript29) Деловая лексика: Emergency Tender, Executive Training30) Глоссарий компании Сахалин Энерджи: external thread, (ECT) контроль вихревого тока31) Полимеры: effective temperature32) Ядерная физика: Emf-Temperature33) Химическое оружие: event tree34) Расширение файла: Enhancement Technology35) Электротехника: engineering tests36) Имена и фамилии: Elisha Tobey37) Высокочастотная электроника: envelope tracking38) Должность: Early Termination, Educational Trainer, Evil Temptress, Executive Technical39) Правительство: Evergreen Terrace, Extra Territorial40) Программное обеспечение: Editor Toolkit41) Международная торговля: Experimental Tourism42) Клинические исследования: early termination (досрочное завершение (исследования)) -
123 Et
1) Общая лексика: hum. сокр. Embryo Transfer, hum. сокр. Embryo Transplant2) Компьютерная техника: exchange termination3) Авиация: ground controller approach, electronic ticket4) Медицина: endothelin5) Американизм: Equal Time6) Спорт: End Time7) Военный термин: Earth Terminal, Electronic Trigger, Embedded Training, Enhanced Terminal, European theater, Extra Tanked, educational training, elapsed time, electronic technology, emergency takeover, emerging technologies, employment testing, engineer training, engineering test, equipment test, equivalent training, estimated time, estimation techniques, evaluation test, experiment test, exploratory technique, explosive technology, explosive train8) Техника: Electric Toothbrush, earliest time, eddy current test, electric telegraph, electron tube, electronics test, emergency tank, end of tape, environmental testing, executive team, extraction turbine, клемма заземления9) Математика: Evaluated Tuples10) Бухгалтерия: Code of Professional Conduct, наиболее ранний срок (появления события в системе ПЕРТ, earliest time)11) Астрономия: extraterrestrial, внеземной12) Металлургия: Equal Taper13) Оптика: ephemeris time14) Политика: Ethiopia15) Сокращение: Civil aircraft marking (Ethiopia), Electronic Timer, Electronics Technician, Electrothermal, Embedded Trainer, English translation, Estonian, Ethiopia (NATO country code), ExaByte (quintillion), External Tank, Extra Terrestrial, edge thickness, electrical time, emerging technology, Eastern Time (GMT - 0500), emission trading (официальный термин в Киотском протоколе)16) Текстиль: Extra Tall17) Университет: Education Technology, Environmental Technology, Extra Time18) Физиология: And, Equal Temperament, EsoTropia, Evapo Transpiration, Extra Testicular19) Вычислительная техника: Eastern Time, ElectroText, (Shuttle) External Tank (Space), Extra Terrestrial (Space)20) Иммунология: Experimental Therapeutics21) Гинекология: embryo transfer22) Биотехнология: Early Transposon23) Транспорт: Easy Traction, Electric Traction24) Пищевая промышленность: Extra Tasty25) Фирменный знак: Electronic Research, England Telecom26) Холодильная техника: evaporating temperature27) Экология: Ecological Transport, environmental test, evapotranspiration28) СМИ: Expressed Transcript29) Деловая лексика: Emergency Tender, Executive Training30) Глоссарий компании Сахалин Энерджи: external thread, (ECT) контроль вихревого тока31) Полимеры: effective temperature32) Ядерная физика: Emf-Temperature33) Химическое оружие: event tree34) Расширение файла: Enhancement Technology35) Электротехника: engineering tests36) Имена и фамилии: Elisha Tobey37) Высокочастотная электроника: envelope tracking38) Должность: Early Termination, Educational Trainer, Evil Temptress, Executive Technical39) Правительство: Evergreen Terrace, Extra Territorial40) Программное обеспечение: Editor Toolkit41) Международная торговля: Experimental Tourism42) Клинические исследования: early termination (досрочное завершение (исследования)) -
124 et
1) Общая лексика: hum. сокр. Embryo Transfer, hum. сокр. Embryo Transplant2) Компьютерная техника: exchange termination3) Авиация: ground controller approach, electronic ticket4) Медицина: endothelin5) Американизм: Equal Time6) Спорт: End Time7) Военный термин: Earth Terminal, Electronic Trigger, Embedded Training, Enhanced Terminal, European theater, Extra Tanked, educational training, elapsed time, electronic technology, emergency takeover, emerging technologies, employment testing, engineer training, engineering test, equipment test, equivalent training, estimated time, estimation techniques, evaluation test, experiment test, exploratory technique, explosive technology, explosive train8) Техника: Electric Toothbrush, earliest time, eddy current test, electric telegraph, electron tube, electronics test, emergency tank, end of tape, environmental testing, executive team, extraction turbine, клемма заземления9) Математика: Evaluated Tuples10) Бухгалтерия: Code of Professional Conduct, наиболее ранний срок (появления события в системе ПЕРТ, earliest time)11) Астрономия: extraterrestrial, внеземной12) Металлургия: Equal Taper13) Оптика: ephemeris time14) Политика: Ethiopia15) Сокращение: Civil aircraft marking (Ethiopia), Electronic Timer, Electronics Technician, Electrothermal, Embedded Trainer, English translation, Estonian, Ethiopia (NATO country code), ExaByte (quintillion), External Tank, Extra Terrestrial, edge thickness, electrical time, emerging technology, Eastern Time (GMT - 0500), emission trading (официальный термин в Киотском протоколе)16) Текстиль: Extra Tall17) Университет: Education Technology, Environmental Technology, Extra Time18) Физиология: And, Equal Temperament, EsoTropia, Evapo Transpiration, Extra Testicular19) Вычислительная техника: Eastern Time, ElectroText, (Shuttle) External Tank (Space), Extra Terrestrial (Space)20) Иммунология: Experimental Therapeutics21) Гинекология: embryo transfer22) Биотехнология: Early Transposon23) Транспорт: Easy Traction, Electric Traction24) Пищевая промышленность: Extra Tasty25) Фирменный знак: Electronic Research, England Telecom26) Холодильная техника: evaporating temperature27) Экология: Ecological Transport, environmental test, evapotranspiration28) СМИ: Expressed Transcript29) Деловая лексика: Emergency Tender, Executive Training30) Глоссарий компании Сахалин Энерджи: external thread, (ECT) контроль вихревого тока31) Полимеры: effective temperature32) Ядерная физика: Emf-Temperature33) Химическое оружие: event tree34) Расширение файла: Enhancement Technology35) Электротехника: engineering tests36) Имена и фамилии: Elisha Tobey37) Высокочастотная электроника: envelope tracking38) Должность: Early Termination, Educational Trainer, Evil Temptress, Executive Technical39) Правительство: Evergreen Terrace, Extra Territorial40) Программное обеспечение: Editor Toolkit41) Международная торговля: Experimental Tourism42) Клинические исследования: early termination (досрочное завершение (исследования)) -
125 Volk, Magnus
[br]b. 19 October 1851 Brighton, Englandd. 20 May 1937 Brighton, England[br]English pioneer in the use of electric power; built the first electric railway in the British Isles to operate a regular service.[br]Volk was the son of a German immigrant clockmaker and continued the business with his mother after his father died in 1869, although when he married in 1879 his profession was described as "electrician". He installed Brighton's first telephone the same year and in 1880 he installed electric lighting in his own house, using a Siemens Brothers dynamo (see Siemens, Dr Ernst Werner von) driven by a Crossley gas engine. This was probably one of the first half-dozen such installations in Britain. Magnus Volk \& Co. became noted electrical manufacturers and contractors, and, inter alia, installed electric light in Brighton Pavilion in place of gas.By 1883 Volk had moved house. He had kept the dynamo and gas engine used to light his previous house, and he also had available an electric motor from a cancelled order. After approaching the town clerk of Brighton, he was given permission for a limited period to build and operate a 2 ft (61 cm) gauge electric railway along the foreshore. Using the electrical equipment he already had, Volk built the line, a quarter of a mile (400 m) long, in eight weeks. The car was built by a local coachbuilder, with the motor under the seat; electric current at 50 volts was drawn from one running rail and returned through the other.The railway was opened on 4 August 1883. It operated regularly for several months and then, permission to run it having been renewed, it was rebuilt for the 1884 season to 2 ft 9 in. (84 cm) gauge, with improved equipment. Despite storm damage from time to time, Volk's Electric Railway, extended in length, has become an enduring feature of Brighton's sea front. In 1887 Volk made an electric dogcart, and an electric van which he built for the Sultan of Turkey was probably the first motor vehicle built in Britain for export. In 1896 he opened the Brighton \& Rottingdean Seashore Electric Tramroad, with very wide-gauge track laid between the high-and low-tide lines, and a long-legged, multi-wheel car to run upon it, through the water if necessary. This lasted only until 1901, however. Volk subsequently became an early enthusiast for aircraft.[br]Further ReadingC.Volk, 1971, Magnus Volk of Brighton, Chichester: Phillimore (his life and career as described by his son).C.E.Lee, 1979, "The birth of electric traction", Railway Magazine (May).PJGR -
126 Siemens, Dr Ernst Werner von
[br]b. 13 December 1816 Lenthe, near Hanover, Germanyd. 6 December 1892 Berlin, Germany[br]German pioneer of the dynamo, builder of the first electric railway.[br]Werner von Siemens was the eldest of a large family and after the early death of his parents took his place at its head. He served in the Prussian artillery, being commissioned in 1839, after which he devoted himself to the study of chemistry and physics. In 1847 Siemens and J.G. Halske formed a company, Telegraphen-Bauanstalt von Siemens und Halske, to manufacture a dial telegraph which they had developed from an earlier instrument produced by Charles Wheatstone. In 1848 Siemens obtained his discharge from the army and he and Halske constructed the first long-distance telegraph line on the European continent, between Berlin and Frankfurt am Main.Werner von Siemens's younger brother, William Siemens, had settled in Britain in 1844 and was appointed agent for the Siemens \& Halske company in 1851. Later, an English subsidiary company was formed, known from 1865 as Siemens Brothers. It specialized in manufacturing and laying submarine telegraph cables: the specialist cable-laying ship Faraday, launched for the purpose in 1874, was the prototype of later cable ships and in 1874–5 laid the first cable to run direct from the British Isles to the USA. In charge of Siemens Brothers was another brother, Carl, who had earlier established a telegraph network in Russia.In 1866 Werner von Siemens demonstrated the principle of the dynamo in Germany, but it took until 1878 to develop dynamos and electric motors to the point at which they could be produced commercially. The following year, 1879, Werner von Siemens built the first electric railway, and operated it at the Berlin Trades Exhibition. It comprised an oval line, 300 m (985 it) long, with a track gauge of 1 m (3 ft 3 1/2 in.); upon this a small locomotive hauled three small passenger coaches. The locomotive drew current at 150 volts from a third rail between the running rails, through which it was returned. In four months, more than 80,000 passengers were carried. The railway was subsequently demonstrated in Brussels, and in London, in 1881. That same year Siemens built a permanent electric tramway, 1 1/2 miles (2 1/2 km) long, on the outskirts of Berlin. In 1882 in Berlin he tried out a railless electric vehicle which drew electricity from a two-wire overhead line: this was the ancestor of the trolleybus.In the British Isles, an Act of Parliament was obtained in 1880 for the Giant's Causeway Railway in Ireland with powers to work it by "animal, mechanical or electrical power"; although Siemens Brothers were electrical engineers to the company, of which William Siemens was a director, delays in construction were to mean that the first railway in the British Isles to operate regular services by electricity was that of Magnus Volk.[br]Principal Honours and DistinctionsHonorary doctorate, Berlin University 1860. Ennobled by Kaiser Friedrich III 1880, after which he became known as von Siemens.Further ReadingS.von Weiher, 1972, "The Siemens brothers, pioneers of the electrical age in Europe", Transactions of the Newcomen Society 45 (describes the Siemens's careers). C.E.Lee, 1979, The birth of electric traction', Railway Magazine (May) (describes Werner Siemens's introduction of the electric railway).Transactions of the Newcomen Society (1979) 50: 82–3 (describes Siemens's and Halske's early electric telegraph instruments).Transactions of the Newcomen Society (1961) 33: 93 (describes the railless electric vehicle).PJGRBiographical history of technology > Siemens, Dr Ernst Werner von
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127 дизель-электрическая тяга
Большой англо-русский и русско-английский словарь > дизель-электрическая тяга
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128 электротяга
Большой англо-русский и русско-английский словарь > электротяга
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