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81 arc lamp carbon
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82 high-intensity carbon-arc lamp
English-german technical dictionary > high-intensity carbon-arc lamp
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83 double-carbon arc lamp
English-Russian dictionary of chemistre > double-carbon arc lamp
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84 twin-carbon arc lamp
English-Russian dictionary of chemistre > twin-carbon arc lamp
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85 arc-lamp carbon
• въглен на електродъгова лампаEnglish-Bulgarian polytechnical dictionary > arc-lamp carbon
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86 arc-lamp carbon
Англо-русский словарь по электроэнергетике > arc-lamp carbon
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87 arc lamp carbon
nMECH ENG carbono para arco voltaico m -
88 Swan, Sir Joseph Wilson
[br]b. 31 October 1828 Sunderland, Englandd. 27 May 1914 Warlingham, Surrey, England[br]English chemist, inventor in Britain of the incandescent electric lamp and of photographic processes.[br]At the age of 14 Swan was apprenticed to a Sunderland firm of druggists, later joining John Mawson who had opened a pharmacy in Newcastle. While in Sunderland Swan attended lectures at the Athenaeum, at one of which W.E. Staite exhibited electric-arc and incandescent lighting. The impression made on Swan prompted him to conduct experiments that led to his demonstration of a practical working lamp in 1879. As early as 1848 he was experimenting with carbon as a lamp filament, and by 1869 he had mounted a strip of carbon in a vessel exhausted of air as completely as was then possible; however, because of residual air, the filament quickly failed.Discouraged by the cost of current from primary batteries and the difficulty of achieving a good vacuum, Swan began to devote much of his attention to photography. With Mawson's support the pharmacy was expanded to include a photographic business. Swan's interest in making permanent photographic records led him to patent the carbon process in 1864 and he discovered how to make a sensitive dry plate in place of the inconvenient wet collodian process hitherto in use. He followed this success with the invention of bromide paper, the subject of a British patent in 1879.Swan resumed his interest in electric lighting. Sprengel's invention of the mercury pump in 1865 provided Swan with the means of obtaining the high vacuum he needed to produce a satisfactory lamp. Swan adopted a technique which was to become an essential feature in vacuum physics: continuing to heat the filament during the exhaustion process allowed the removal of absorbed gases. The inventions of Gramme, Siemens and Brush provided the source of electrical power at reasonable cost needed to make the incandescent lamp of practical service. Swan exhibited his lamp at a meeting in December 1878 of the Newcastle Chemical Society and again the following year before an audience of 700 at the Newcastle Literary and Philosophical Society. Swan's failure to patent his invention immediately was a tactical error as in November 1879 Edison was granted a British patent for his original lamp, which, however, did not go into production. Parchmentized thread was used in Swan's first commercial lamps, a material soon superseded by the regenerated cellulose filament that he developed. The cellulose filament was made by extruding a solution of nitro-cellulose in acetic acid through a die under pressure into a coagulating fluid, and was used until the ultimate obsolescence of the carbon-filament lamp. Regenerated cellulose became the first synthetic fibre, the further development and exploitation of which he left to others, the patent rights for the process being sold to Courtaulds.Swan also devised a modification of Planté's secondary battery in which the active material was compressed into a cellular lead plate. This has remained the central principle of all improvements in secondary cells, greatly increasing the storage capacity for a given weight.[br]Principal Honours and DistinctionsKnighted 1904. FRS 1894. President, Institution of Electrical Engineers 1898. First President, Faraday Society 1904. Royal Society Hughes Medal 1904. Chevalier de la Légion d'Honneur 1881.Bibliography2 January 1880, British patent no. 18 (incandescent electric lamp).24 May 1881, British patent no. 2,272 (improved plates for the Planté cell).1898, "The rise and progress of the electrochemical industries", Journal of the Institution of Electrical Engineers 27:8–33 (Swan's Presidential Address to the Institution of Electrical Engineers).Further ReadingM.E.Swan and K.R.Swan, 1968, Sir Joseph Wilson Swan F.R.S., Newcastle upon Tyne (a detailed account).R.C.Chirnside, 1979, "Sir Joseph Swan and the invention of the electric lamp", IEEElectronics and Power 25:96–100 (a short, authoritative biography).GWBiographical history of technology > Swan, Sir Joseph Wilson
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89 black
1) чёрный (о цвете)2) технический углерод, сажа3) чёрная краска || покрывать [красить] чёрной краской, чернить4) марашка (чёрное пятно)5) очко (печатающая поверхность формы)6) печатная форма для чёрной краски7) чёрная заливка, заливка чёрнымАнгло-русский словарь по полиграфии и издательскому делу > black
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90 black
1. чёрныйblack box — "чёрный ящик"
2. чёрная краска; покрывать чёрной краской, чернить3. марашка4. очко5. печатная форма для чёрной краски6. чёрная заливка, заливка чёрнымBlack Hand — "Чёрная рука"
7. выкрывать8. вымарывать, замазывать чёрной краскойaniline black — анилиновая чёрная краска, чёрный анилин
black out — вычёркивать, вымарывать
9. технический углерод, сажа10. копировальная бумагаdensed black — "уплотнённая" сажа
hydrocarbon black — технический углерод, сажа
pure carbon black — чистый технический углерод, сажа
skeleton black — "скелетное" чёрное изображение
soft black — мягкая сажа, мягкая растительная чернь
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91 test
1. испытание, проверка; опыт; проба; исследование, анализ || испытывать, проверять; исследовать; производить анализ2. опробование ( скважины) || опробоватьrule of thumb test — грубый [приближенный] метод оценки
— ball indentation test— Charpy impact test— DAP test— dry test— hydraulic pressure test— Izod impact test— shearing test— torsional test— wearing test
* * *
1. испытание, испытания; проверка; контроль2. исследование; анализ3. критерийdrill stem formation test — исследование пласта пластоиспытателем, спускаемым на бурильных трубах
— use test
* * *
исследование; испытание; опыт; проверка
* * *
опыт; испытание, проверка; проверять
* * *
1) испытание, испытания; проба; проверка; контроль2) исследование; анализ4) опробование ( скважины) || опробовать6) критерий•test for color stability — испытания ( бензина) на стабильность цвета;
test for defect — проверка на наличие дефектов;
test for soundness — испытания ( цемента) на равномерность изменения объёма;
test for suitability — испытания на пригодность (); испытания на соответствие заданным требованиям;
to test a core for shows of oil — исследовать керн на признаки нефти;
to test a well — измерять дебит скважины;
to apply boring test — применять бурение при поисковых работах;
test to destruction — испытания до разрушения ( образца), разрушающие испытания;
test to failure — испытания до отказа;
to put to test — подвергать испытаниям;
test with recovery — испытания с восстановлением;
- abrasion testtest without destruction — испытания без разрушения ( образца), неразрушающие испытания;
- accelerated test
- accelerated aging test of gasoline
- acceleration inertia load test
- acceptance test
- acid heat test
- activity test
- adhesion test
- air pressure test
- alkali test
- angularity test
- aniline test
- appraisal test
- assessment test
- ASTM test
- audit test
- availability acceptance test
- azimuth test
- back-pressure test
- back-pressure formation test
- bailing test
- bearing test
- bedrock test
- blowdown test
- bottle test
- breakdown test
- burn-in reliability test
- carbon test
- carbon color test
- casing-packer formation test
- centrifuge test
- certification test
- charcoal test
- charcoal weight test
- checkout test
- cloud test of petroleum oil
- coke test
- coking test
- cold test
- combined environment reliability test
- complete destructive test
- complete functional test
- cone penetrometer test
- confirmation test
- confirmatory test
- consumption test
- contact test
- contamination test
- control test
- controlled test
- copper dish gum evaporation test
- copper dish residue test
- copper strip test
- corrosion test
- corrosive wear test
- cracking test
- crankcase oil dilution test
- crankcase oil foaming test
- crosstalk test
- current production rate test
- damaging test
- deep test
- deep pool test
- definitive test
- demulsibility test
- demulsification test
- development test
- diammonium phosphate test
- diesel-fuel distillation test
- diesel-fuel gravity test
- dilution test of fuel
- dip test
- direct oxidation test
- distillation test
- doctor test
- double casing-packer formation test
- double wall-packer formation test
- drawdown test
- drift test
- drilling mud density test
- drilling mud fluidity test
- drill-off test
- drill-stem formation test
- dry test
- eddy-current test
- emulsification test
- endurance test
- engineering design test
- engineering evaluation test
- equipment operation test
- evaporation test of gasoline
- evaporation gum test
- exploratory test
- extension test
- fail-safe test
- failure test
- failure-producing test
- failure-rate test
- failure-terminated test
- failure-truncated test
- failure-under-load test
- falling weight test
- fatigue test
- field test
- field compression test
- field maintenance test
- filter test
- filtration test
- final malfunction test
- fire test
- firing time test
- flammability test
- float test
- floc test
- flood pot test
- flow test
- flowing bottom hole pressure test
- fluid test
- foam test
- forced failure test
- formation test
- formation productivity test
- friability test
- fuel dilution test
- full-scale test
- full-scale fatigue test
- gas test
- gas flow test
- gas impermeability test
- gasoline precipitation test
- gasoline sulfur test
- gasoline tetraethil lead test
- gasoline volatility test
- gel strength test
- glass dish evaporation test
- glass dish gum test
- Green test
- guarantee test
- gum test
- gumming test
- hammer test
- hand test
- heavy-duty test
- hot test
- hot filtration test
- hydraulic-pressure test
- hydro test
- hydrogen-in-petroleum test
- hydrostatic test
- immersion test
- in-place test
- in-use life test
- inflammability test
- initial well potential test
- injectivity test
- injectivity-index test
- interference test
- intermodulation test
- kauri-butanol solvency test
- knock test
- laboratory test on crude
- laboratory test on oil
- lacquer test
- lamp burning test
- lamp sulfur test
- lead acetate test
- leak test
- leakage test
- leakage test of weld seams
- length-of-life test
- life test
- life-certification test
- line test
- logging-cable formation test
- longevity test
- lubricating oil emulsion test
- lubricating oil metal test
- magnetic polarity test
- maintainability test
- maintenance test
- marine explosure test
- mercurization test
- mercury freezing test
- mixing water test
- motor method test
- multirate flow test
- neutralization test
- nitrating test
- nonfoaming test
- nonreplacement test
- oil cold test
- oil corrosion test
- oil emulsion test
- oil well potential test
- Oliensis spot test
- on-site test
- open-flow test
- open-hole formation test
- operability test
- operating life test
- operational test
- operational readiness test
- operational readiness and reliability test
- operational readiness inspection test
- operational suitability test
- oven test
- overflow test
- overspeed test
- overstress reliability test
- oxidation test
- oxygen absorption test
- pass-fail test
- penetration test
- performance test
- periodic potential test
- periodic well potential test
- permeability test
- pipeline immersion test
- plam test
- porcelain dish test
- postcompletional flow test
- potential test
- predemonstration test
- preliminary qualification test
- preoverhaul test
- prepilot mining test
- prequalification test
- pressure test
- pressure building test
- pressure drawdown test
- pressure transient test
- producing test
- production test
- production reliability test
- productivity test
- product-proof test
- proof test
- pulling test
- pulse test
- qualification test
- quality verification test
- reaction test
- reflection test
- refraction test
- reliability test
- reliability assurance test
- reliability audit test
- reliability demonstration test
- reliability field test
- reliability growth test
- reliability production test
- reliability verification test
- repair test
- repeated bending stress test
- repeated compression test
- repeated direct stress test
- repeated dynamic stress test
- repeated impact tension test
- repeated stress test
- repeated tensile stress test
- repeated tension test
- repeated torsion test
- replacement test
- reservoir limit test
- reversion test of kerosene
- rheometric test
- ring test
- road knock test
- rock specimen test
- running test
- sampling reliability test
- seawater corrosion test
- sediment-and-water test
- sedimentometric test
- seismic test
- selective flow test of well
- sequential reliability test
- service test
- serviceability test
- service-life evaluation test
- setting-time test
- settlement test
- severe-duty test
- shallover pay test
- short-time well test
- shut-in pressure test
- sieving test
- silica test
- silicotungstic acid test
- sludge test
- sludging test
- smell test
- smoke test
- soap hardness test
- soundness-and-fineness test
- spot test
- spot quality test
- stability test
- standard test
- standard acid test
- standard distillation test
- steady-state test of well
- steam soak test
- step-rate test
- straddle test
- straddle packer drill stem test
- straight-hole test
- strata test
- submersion test
- suitability test
- sulfated residue test
- sulfur test
- sulfuric acid heat test
- system operation test
- tap test
- tensile test
- tensile-and-compression test
- tensile-fatigue test
- tensile-impact test
- tensile-shock test
- tension test
- thickening-time test
- through-casing formation test
- time-terminated reliability test
- torque test
- torsion test
- torsion impact test
- toughness test
- trial test
- tribotechnical test
- Tutwiler test
- twisting test
- type test
- undestructive test
- upsetting test
- up-the-hole test
- use test
- vane test
- varnish test
- verification life test
- viscosity test
- volatilization test
- wall building test
- wall-packer formation test
- warranty test
- water test
- water-and-oil content test
- waterflood core test
- water-loss test
- wear test
- weld test
- weldability test
- welding test
- well test
- well potential test
- winterization test
- wireline formation test
- withdrawal test* * * -
92 black
(углеродная) сажа; чернь, черная краска; черный; темный; окрашивать черной краской @abrasion-resistant (carbon) black износостойкая сажа @acetylene (carbon) black ацетиленовая сажа @aniline (carbon) black анилиновая сажа @anthracene (carbon) black антраценовая сажа @bone (carbon) black костяная сажа @carbon black углеродная [газовая] сажа @channel (carbon) black канальная сажа @conductive (carbon) black токопроводящая сажа @contact (carbon) black канальная сажа @dustless [free-flowing] (carbon) black @free-flowing [dustless] (carbon) black непылящая [гранулированная] сажа @gas (carbon) black газовая сажа @high-modulus (carbon) black высокомодульная сажа @impingement (carbon) black канальная сажа @jet black газовая сажа @lamp (carbon) black ламповая [пламенная] сажа @mineral (carbon) black минеральная сажа @oil-based furnace (carbon) black форсуночная сажа @pelletized (carbon) black гранулированная сажа @soft (carbon) black мягкая сажа @thermal decomposition (carbon) black термическая сажа @white (carbon) black белая сажа, коллоидная кремнекислота @Англо-русский словарь по авиационно-космическим материалам > black
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93 black
1. ( углеродная) сажа2. чернь, чёрная краска3. чёрный4. тёмныйabrasion-resistant carbon black — износостойкая сажа
acetylene carbon black — ацетиленовая сажа
aniline carbon black — анилиновая сажа
anthracene carbon black — антраценовая сажа
bone carbon black — костяная сажа
carbon black — углеродная [газовая] сажа
channel carbon black — канальная сажа
conductive carbon black — токопроводящая сажа
contact carbon black — канальная сажа
dustless carbon black — непылящая [гранулированная] сажа
free-flowing carbon black — гранулированная [непылящая] сажа
gas carbon black — газовая сажа
high-modulus carbon black — высокомодульная сажа
impingement carbon black — канальная сажа
jet black — газовая сажа
lamp carbon black — ламповая [пламенная] сажа
mineral carbon black — минеральная сажа
oil-based furnace carbon black — форсуночная сажа
pelletized carbon black — гранулированная сажа
soft carbon black — мягкая сажа
thermal decomposition carbon black — термическая сажа
white black — белая сажа, коллоидная кремнекислота
English-Russian dictionary of aviation and space materials > black
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94 Staite, William Edwards
[br]b. 19 April 1809 Bristol, Englandd. 26 September 1854 Caen, France[br]English inventor who did much to popularize electric lighting in early Victorian England and demonstrated the first self-regulating arc lamp.[br]Before devoting the whole of his attention to the electric light, Staite was a partner in a business of iron merchants and patented a method of obtaining extracts and essences. From 1834 he attempted to produce a continuous light by electricity. The first public exhibition of Staite's arc lamp incorporating a fixed-rate clockwork mechanism was given in 1847 to the Sunderland Literary and Philosophical Society. He also demonstrated an incandescent lamp with an iridioplatinum filament. Sir Joseph Wilson Swan recorded that it was attending lectures by Staite in Sunderland, Newcastle and Carlisle that started him on the quest which many years later was to lead to his incandescent lamp.In association with William Petrie (1821–1904), Staite made an important advance in the development of arc lamps by introducing automatic regulation of the carbon rods by way of an electromagnet. This was the first of many self-regulating arc lamps that were invented during the nineteenth century employing this principle. A contributory factor in the success of Staite's lamp was the semi enclosure of the arc in a transparent vessel that reduced the consumption of carbons, a feature not used again until the 1890s. His patents included processes for preparing carbons and the construction of primary cells for arc lighting. An improved lamp used by Staite in a theatrical production at Her Majesty's Theatre, London, in April 1849 may be considered the first commercial success of the electric light in England. In spite of the limitations imposed by the use of primary cells as the only available source of power, serious interest in this system of electric lighting was shown by railway companies and dock authorities. However, after he had developed a satisfactory arc lamp, an end to these early experiments was brought about by Staite's death.[br]BibliographyJuly 1847, British patent no. 1,1783 (electromagnetic regulation of an arc lamp).His manuscript "History of electric light" is in the Institution of Electrical Engineers archives.Further ReadingJ.J.Fahie, 1902, "Staite and Petrie's electric light 1846–1853", Electrical Engineer 30:297–301, 337–40, 374–6 (a detailed reliable account).G.Woodward, 1989, "Staite and Petrie: pioneers of electric lighting", Proceedings of the Institution of Electrical Engineers 136 (Part A): 290–6 GWBiographical history of technology > Staite, William Edwards
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95 resistor
1) резистор•-
absorbing resistor
-
adjustable resistor
- audio-fidelity control resistor -
auxiliary resistor
-
ballasting resistor
-
ballast resistor
-
biasing resistor
-
bias resistor
-
bleeder resistor
-
brake resistor
-
braking resistor
-
bulk resistor
-
bypass resistor
-
calibration resistor
-
carbon black resistor
-
carbon composition resistor
-
carbon resistor
-
carbon-film resistor
-
carbon-resin film resistor
-
carbon-resin lacquer resistor
-
cermet resistor
-
charging resistor
-
chip resistor
-
circuit-breaker making resistor
-
circuit-breaker opening resistor
-
compensated-impurity resistor
-
composite-film resistor
-
composition-type resistor
-
constant torque resistor
-
continuously adjustable resistor
-
control resistor
-
current-limiting resistor
-
damping resistor
-
decoupling resistor
-
deposited-carbon resistor
-
diffused-layer resistor
-
diffused resistor
-
discharge resistor
-
double-wiper resistor
-
dual-unit single-shaft variable resistor
-
dumping resistor
-
earthing resistor
-
evaporated-film resistor
-
evaporated resistor
-
field-regulating resistor
-
filamentary resistor
-
film resistor
-
fixed-value resistor
-
fixed resistor
-
fusible resistor
-
ganged variable resistor
-
half-finished resistor
-
headless resistor
-
heat-variable resistor
-
helical-track resistor
-
hermetically sealed resistor
-
high-precision variable resistor
-
high-value resistor
-
ignition resistor
-
instrument series resistor
-
instrument shunt resistor
-
insulated resistor
-
integrated-circuit resistor
-
integrated resistor
-
junction-type resistor
-
junction resistor
-
lamp resistor
-
leaded resistor
-
lead resistor
-
light-dependent resistor
-
limiting resistor
-
linear resistor
-
line-dropping resistor
-
liquid resistor
-
loading resistor
-
load resistor
-
load-limiting resistor
-
low-ohmic resistor
-
low-profile resistor
-
low-value resistor
-
matching resistor
-
memory resistor
-
metal-film resistor
-
metal-glaze resistor
-
metallic resistor
-
metallized resistor
-
metal-oxide resistor
-
metal-oxide-semiconductor resistor
-
microchip resistor
-
molded track resistor
-
multiplier resistor
-
multiturn variable resistor
-
negative temperature-coefficient resistor
-
neutral grounding resistor
-
noninductive resistor
-
noninsulated resistor
-
nonlinear resistor
-
panel control resistor
-
parallel resistor
-
pigtail resistor
-
planar resistor
-
positive temperature-coefficient resistor
-
pot resistor
-
preset resistor
-
printed resistor
-
protective resistor
-
pull-down resistor
-
pull-up resistor
-
quenching resistor
-
rectilinear resistor
-
reference resistor
-
regulating resistor
-
rod resistor
-
scale resistor
-
semiconductor resistor
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semifixed resistor
-
series resistor
-
shunting resistor
-
shunt resistor
-
single-unit single-shaft variable resistor
-
single-wound resistor
-
slide variable resistor
-
smoothing resistor
-
spark resistor
-
speedup resistor
-
standard resistor
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starting resistor
-
swamping resistor
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swamp resistor
-
tapped resistor
-
temperature-sensitive resistor
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terminating resistor
-
thermally sensitive resistor
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thermal resistor
-
track resistor
-
transition resistor
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trimmed resistor
-
trimmer resistor
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variable resistor
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voltage-controlled resistor
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voltage-dropping resistor
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voltage-sensitive resistor
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wire-wound-type resistor
-
wire-wound resistor -
96 pulsed-xenon arc
English-Russian big polytechnic dictionary > pulsed-xenon arc
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97 arc
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98 Edison, Thomas Alva
SUBJECT AREA: Architecture and building, Automotive engineering, Electricity, Electronics and information technology, Metallurgy, Photography, film and optics, Public utilities, Recording, Telecommunications[br]b. 11 February 1847 Milan, Ohio, USAd. 18 October 1931 Glenmont[br]American inventor and pioneer electrical developer.[br]He was the son of Samuel Edison, who was in the timber business. His schooling was delayed due to scarlet fever until 1855, when he was 8½ years old, but he was an avid reader. By the age of 14 he had a job as a newsboy on the railway from Port Huron to Detroit, a distance of sixty-three miles (101 km). He worked a fourteen-hour day with a stopover of five hours, which he spent in the Detroit Free Library. He also sold sweets on the train and, later, fruit and vegetables, and was soon making a profit of $20 a week. He then started two stores in Port Huron and used a spare freight car as a laboratory. He added a hand-printing press to produce 400 copies weekly of The Grand Trunk Herald, most of which he compiled and edited himself. He set himself to learn telegraphy from the station agent at Mount Clements, whose son he had saved from being run over by a freight car.At the age of 16 he became a telegraphist at Port Huron. In 1863 he became railway telegraphist at the busy Stratford Junction of the Grand Trunk Railroad, arranging a clock with a notched wheel to give the hourly signal which was to prove that he was awake and at his post! He left hurriedly after failing to hold a train which was nearly involved in a head-on collision. He usually worked the night shift, allowing himself time for experiments during the day. His first invention was an arrangement of two Morse registers so that a high-speed input could be decoded at a slower speed. Moving from place to place he held many positions as a telegraphist. In Boston he invented an automatic vote recorder for Congress and patented it, but the idea was rejected. This was the first of a total of 1180 patents that he was to take out during his lifetime. After six years he resigned from the Western Union Company to devote all his time to invention, his next idea being an improved ticker-tape machine for stockbrokers. He developed a duplex telegraphy system, but this was turned down by the Western Union Company. He then moved to New York.Edison found accommodation in the battery room of Law's Gold Reporting Company, sleeping in the cellar, and there his repair of a broken transmitter marked him as someone of special talents. His superior soon resigned, and he was promoted with a salary of $300 a month. Western Union paid him $40,000 for the sole rights on future improvements on the duplex telegraph, and he moved to Ward Street, Newark, New Jersey, where he employed a gathering of specialist engineers. Within a year, he married one of his employees, Mary Stilwell, when she was only 16: a daughter, Marion, was born in 1872, and two sons, Thomas and William, in 1876 and 1879, respectively.He continued to work on the automatic telegraph, a device to send out messages faster than they could be tapped out by hand: that is, over fifty words per minute or so. An earlier machine by Alexander Bain worked at up to 400 words per minute, but was not good over long distances. Edison agreed to work on improving this feature of Bain's machine for the Automatic Telegraph Company (ATC) for $40,000. He improved it to a working speed of 500 words per minute and ran a test between Washington and New York. Hoping to sell their equipment to the Post Office in Britain, ATC sent Edison to England in 1873 to negotiate. A 500-word message was to be sent from Liverpool to London every half-hour for six hours, followed by tests on 2,200 miles (3,540 km) of cable at Greenwich. Only confused results were obtained due to induction in the cable, which lay coiled in a water tank. Edison returned to New York, where he worked on his quadruplex telegraph system, tests of which proved a success between New York and Albany in December 1874. Unfortunately, simultaneous negotiation with Western Union and ATC resulted in a lawsuit.Alexander Graham Bell was granted a patent for a telephone in March 1876 while Edison was still working on the same idea. His improvements allowed the device to operate over a distance of hundreds of miles instead of only a few miles. Tests were carried out over the 106 miles (170 km) between New York and Philadelphia. Edison applied for a patent on the carbon-button transmitter in April 1877, Western Union agreeing to pay him $6,000 a year for the seventeen-year duration of the patent. In these years he was also working on the development of the electric lamp and on a duplicating machine which would make up to 3,000 copies from a stencil. In 1876–7 he moved from Newark to Menlo Park, twenty-four miles (39 km) from New York on the Pennsylvania Railway, near Elizabeth. He had bought a house there around which he built the premises that would become his "inventions factory". It was there that he began the use of his 200- page pocket notebooks, each of which lasted him about two weeks, so prolific were his ideas. When he died he left 3,400 of them filled with notes and sketches.Late in 1877 he applied for a patent for a phonograph which was granted on 19 February 1878, and by the end of the year he had formed a company to manufacture this totally new product. At the time, Edison saw the device primarily as a business aid rather than for entertainment, rather as a dictating machine. In August 1878 he was granted a British patent. In July 1878 he tried to measure the heat from the solar corona at a solar eclipse viewed from Rawlins, Wyoming, but his "tasimeter" was too sensitive.Probably his greatest achievement was "The Subdivision of the Electric Light" or the "glow bulb". He tried many materials for the filament before settling on carbon. He gave a demonstration of electric light by lighting up Menlo Park and inviting the public. Edison was, of course, faced with the problem of inventing and producing all the ancillaries which go to make up the electrical system of generation and distribution-meters, fuses, insulation, switches, cabling—even generators had to be designed and built; everything was new. He started a number of manufacturing companies to produce the various components needed.In 1881 he built the world's largest generator, which weighed 27 tons, to light 1,200 lamps at the Paris Exhibition. It was later moved to England to be used in the world's first central power station with steam engine drive at Holborn Viaduct, London. In September 1882 he started up his Pearl Street Generating Station in New York, which led to a worldwide increase in the application of electric power, particularly for lighting. At the same time as these developments, he built a 1,300yd (1,190m) electric railway at Menlo Park.On 9 August 1884 his wife died of typhoid. Using his telegraphic skills, he proposed to 19-year-old Mina Miller in Morse code while in the company of others on a train. He married her in February 1885 before buying a new house and estate at West Orange, New Jersey, building a new laboratory not far away in the Orange Valley.Edison used direct current which was limited to around 250 volts. Alternating current was largely developed by George Westinghouse and Nicola Tesla, using transformers to step up the current to a higher voltage for long-distance transmission. The use of AC gradually overtook the Edison DC system.In autumn 1888 he patented a form of cinephotography, the kinetoscope, obtaining film-stock from George Eastman. In 1893 he set up the first film studio, which was pivoted so as to catch the sun, with a hinged roof which could be raised. In 1894 kinetoscope parlours with "peep shows" were starting up in cities all over America. Competition came from the Latham Brothers with a screen-projection machine, which Edison answered with his "Vitascope", shown in New York in 1896. This showed pictures with accompanying sound, but there was some difficulty with synchronization. Edison also experimented with captions at this early date.In 1880 he filed a patent for a magnetic ore separator, the first of nearly sixty. He bought up deposits of low-grade iron ore which had been developed in the north of New Jersey. The process was a commercial success until the discovery of iron-rich ore in Minnesota rendered it uneconomic and uncompetitive. In 1898 cement rock was discovered in New Village, west of West Orange. Edison bought the land and started cement manufacture, using kilns twice the normal length and using half as much fuel to heat them as the normal type of kiln. In 1893 he met Henry Ford, who was building his second car, at an Edison convention. This started him on the development of a battery for an electric car on which he made over 9,000 experiments. In 1903 he sold his patent for wireless telegraphy "for a song" to Guglielmo Marconi.In 1910 Edison designed a prefabricated concrete house. In December 1914 fire destroyed three-quarters of the West Orange plant, but it was at once rebuilt, and with the threat of war Edison started to set up his own plants for making all the chemicals that he had previously been buying from Europe, such as carbolic acid, phenol, benzol, aniline dyes, etc. He was appointed President of the Navy Consulting Board, for whom, he said, he made some forty-five inventions, "but they were pigeonholed, every one of them". Thus did Edison find that the Navy did not take kindly to civilian interference.In 1927 he started the Edison Botanic Research Company, founded with similar investment from Ford and Firestone with the object of finding a substitute for overseas-produced rubber. In the first year he tested no fewer than 3,327 possible plants, in the second year, over 1,400, eventually developing a variety of Golden Rod which grew to 14 ft (4.3 m) in height. However, all this effort and money was wasted, due to the discovery of synthetic rubber.In October 1929 he was present at Henry Ford's opening of his Dearborn Museum to celebrate the fiftieth anniversary of the incandescent lamp, including a replica of the Menlo Park laboratory. He was awarded the Congressional Gold Medal and was elected to the American Academy of Sciences. He died in 1931 at his home, Glenmont; throughout the USA, lights were dimmed temporarily on the day of his funeral.[br]Principal Honours and DistinctionsMember of the American Academy of Sciences. Congressional Gold Medal.Further ReadingM.Josephson, 1951, Edison, Eyre \& Spottiswode.R.W.Clark, 1977, Edison, the Man who Made the Future, Macdonald \& Jane.IMcN -
99 Chevenard, Pierre Antoine Jean Sylvestre
SUBJECT AREA: Metallurgy[br]b. 31 December 1888 Thizy, Rhône, Franced. 15 August 1960 Fontenoy-aux-Roses, France[br]French metallurgist, inventor of the alloys Elinvar and Platinite and of the method of strengthening nickel-chromium alloys by a precipitate ofNi3Al which provided the basis of all later super-alloy development.[br]Soon after graduating from the Ecole des Mines at St-Etienne in 1910, Chevenard joined the Société de Commentry Fourchambault et Decazeville at their steelworks at Imphy, where he remained for the whole of his career. Imphy had for some years specialized in the production of nickel steels. From this venture emerged the first austenitic nickel-chromium steel, containing 6 per cent chromium and 22–4 per cent nickel and produced commercially in 1895. Most of the alloys required by Guillaume in his search for the low-expansion alloy Invar were made at Imphy. At the Imphy Research Laboratory, established in 1911, Chevenard conducted research into the development of specialized nickel-based alloys. His first success followed from an observation that some of the ferro-nickels were free from the low-temperature brittleness exhibited by conventional steels. To satisfy the technical requirements of Georges Claude, the French cryogenic pioneer, Chevenard was then able in 1912 to develop an alloy containing 55–60 per cent nickel, 1–3 per cent manganese and 0.2–0.4 per cent carbon. This was ductile down to −190°C, at which temperature carbon steel was very brittle.By 1916 Elinvar, a nickel-iron-chromium alloy with an elastic modulus that did not vary appreciably with changes in ambient temperature, had been identified. This found extensive use in horology and instrument manufacture, and even for the production of high-quality tuning forks. Another very popular alloy was Platinite, which had the same coefficient of thermal expansion as platinum and soda glass. It was used in considerable quantities by incandescent-lamp manufacturers for lead-in wires. Other materials developed by Chevenard at this stage to satisfy the requirements of the electrical industry included resistance alloys, base-metal thermocouple combinations, magnetically soft high-permeability alloys, and nickel-aluminium permanent magnet steels of very high coercivity which greatly improved the power and reliability of car magnetos. Thermostatic bimetals of all varieties soon became an important branch of manufacture at Imphy.During the remainder of his career at Imphy, Chevenard brilliantly elaborated the work on nickel-chromium-tungsten alloys to make stronger pressure vessels for the Haber and other chemical processes. Another famous alloy that he developed, ATV, contained 35 per cent nickel and 11 per cent chromium and was free from the problem of stress-induced cracking in steam that had hitherto inhibited the development of high-power steam turbines. Between 1912 and 1917, Chevenard recognized the harmful effects of traces of carbon on this type of alloy, and in the immediate postwar years he found efficient methods of scavenging the residual carbon by controlled additions of reactive metals. This led to the development of a range of stabilized austenitic stainless steels which were free from the problems of intercrystalline corrosion and weld decay that then caused so much difficulty to the manufacturers of chemical plant.Chevenard soon concluded that only the nickel-chromium system could provide a satisfactory basis for the subsequent development of high-temperature alloys. The first published reference to the strengthening of such materials by additions of aluminium and/or titanium occurs in his UK patent of 1929. This strengthening approach was adopted in the later wartime development in Britain of the Nimonic series of alloys, all of which depended for their high-temperature strength upon the precipitated compound Ni3Al.In 1936 he was studying the effect of what is now known as "thermal fatigue", which contributes to the eventual failure of both gas and steam turbines. He then published details of equipment for assessing the susceptibility of nickel-chromium alloys to this type of breakdown by a process of repeated quenching. Around this time he began to make systematic use of the thermo-gravimetrie balance for high-temperature oxidation studies.[br]Principal Honours and DistinctionsPresident, Société de Physique. Commandeur de la Légion d'honneur.Bibliography1929, Analyse dilatométrique des matériaux, with a preface be C.E.Guillaume, Paris: Dunod (still regarded as the definitive work on this subject).The Dictionary of Scientific Biography lists around thirty of his more important publications between 1914 and 1943.Further Reading"Chevenard, a great French metallurgist", 1960, Acier Fins (Spec.) 36:92–100.L.Valluz, 1961, "Notice sur les travaux de Pierre Chevenard, 1888–1960", Paris: Institut de France, Académie des Sciences.ASDBiographical history of technology > Chevenard, Pierre Antoine Jean Sylvestre
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100 Jablochkoff, Paul
[br]b. 14 September 1847 Serdobsk, Russiad. April 1894 St Petersburg, Russia[br]Russian military engineer and inventor of an electric "candle", the invention of which gave an immense impetus to electric lighting in the 1870s.[br]Jablochkoff studied at the Military Engineering College in St Petersburg. Having a scientific bent, he was sent to the Military Galvano Technical School. At the end of his military service in 1871 he was appointed Director General of the Moscow-Kursk telegraph lines for the Midi Railway Company. At this time he began to develop an interest in electric lighting, and in 1875 he left the Imperial Telegraph Service to devote his time exclusively to scientific pursuits. He found employment at the workshop of M Bréguet in Paris, where Gramme dynamos and Serrin arc lamps were being constructed. After some experimentation he found a means of producing a carbon arc that regulated itself without any mechanism. This lamp, the Jablochkoff candle, with two carbon rods placed parallel to each other and so close that an arc formed at the ends, could continue to burn until the rods were consumed. Plaster of Paris was used to separate the two electrodes and crumbled away as the carbon burned, thus exposing fresh carbon. These lamps were used in May 1878 in Paris to illuminate the avenue de l'Opéra, and later in Rome and London, and in essence were the first practical electric street lighting. Since there was no regulating mechanism, several candles could be placed in a single circuit. Despite inherent defects, such as the inability to restart the lamps after they were extinguished by wind or interruption of supply, they remained in use for some purposes for several years on account of their simplicity and cheapness. In 1877 Jablochkoff obtained the earliest patent to employ transformers to distribute current in an alternating-current circuit.[br]Bibliography11 September 1876, British patent no. 3,552 (Jablochkoff's candle).22 May 1877, British patent no. 1,996 (transformer or induction coil distribution).Further ReadingW.J.King, 1962, The Development of Electrical Technology in the 19th Century, Washington, DC: Smithsonian Institution, Paper 30, pp. 393–407 (a detailed account). W.E.Langdon, 1877, "On a new form of electric light", Journal of the Society ofTelegraph Engineers 6:303–19 (an early report on Jablochkoffs system).Engineering (1878) 26:125–7.GW
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Carbon compounds — Carbon Car bon (k[aum]r b[o^]n), n. [F. carbone, fr. L. carbo coal; cf. Skr. [,c]r[=a] to cook.] (Chem.) 1. An elementary substance, not metallic in its nature, which is present in all organic compounds. Atomic weight 11.97. Symbol C. it is… … The Collaborative International Dictionary of English
carbon copy — Carbon Car bon (k[aum]r b[o^]n), n. [F. carbone, fr. L. carbo coal; cf. Skr. [,c]r[=a] to cook.] (Chem.) 1. An elementary substance, not metallic in its nature, which is present in all organic compounds. Atomic weight 11.97. Symbol C. it is… … The Collaborative International Dictionary of English
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