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1 low-limited cement
Большой англо-русский и русско-английский словарь > low-limited cement
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2 low-limited cement
Англо-русский словарь нефтегазовой промышленности > low-limited cement
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3 low-limited cement
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4 cement
цемент; вяжущее вещество || цементировать, тампонировать цементом, скреплять цементным растворомlow-heat of hydration cement — цемент с малой экзотермией [теплотой гидратации]; низкотермичный цемент
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1) цемент; цементный раствор || цементировать; скреплять цементным раствором; обмазывать цементным раствором; тампонировать цементом2) схватываться ()3) замазка•to cement casing string in place — цементировать обсадную колонну в стволе скважины;
to cast in cement — заливать цементным раствором;
to displace cement — продавливать цемент;
to cement in — цементировать; заливать цементным раствором;
- additive cementto cement in place — цементировать при монтаже;
- air-entraining cement
- alabaster cement
- alumina cement
- aluminate cement
- anhydrite cement
- artificial cement
- asbestos cement
- asphaltic cement
- autoclaved cement
- bakelite cement
- base cement
- bauxite cement
- belite cement
- belite-diatomaceous earth cement
- belite-tripolite cement
- belite-tripolite powder cement
- bentonite cement
- bituminous cement
- blast cement
- blast-furnace cement
- blast-furnace slag cement
- blended cement
- bulk cement
- calcareous cement
- calcium aluminate cement
- clay cement
- clinker-bearing slag cement
- coarse-ground cement
- commercial portland cement
- completely hydrated cement
- construction cement
- corrosion-resistant oil-well cement
- diatomaceous earth cement
- diesel-oil cement
- dolomite cement
- dry cement
- early-strength cement
- excessive cement
- expanding cement
- fast-setting cement
- ferro-manganese slag cement
- fiber cement
- fibrous cement
- fine grounding cement
- fly-ash cement
- furan-resin cement
- gel cement
- general purpose portland cement
- gilsonite cement
- glass bubble cement
- green cement
- gypsum cement
- gypsum-alumina cement
- gypsum-retarded cement
- gypsum-slag cement
- heat-resistant cement
- high-alkali cement
- high-alumina cement
- high-early cement
- high-early strength cement
- high-grade cement
- high-speed cement
- high-strength cement
- high-sulfate-resistant cement
- high-temperature cement
- honeycombed cement
- hydrated cement
- hydraulic cement
- hydrophobic cement
- interstitial cement
- iron-oxide cement
- iron-portland cement
- jelled cement
- latex cement
- lean cement
- lightened cement
- lime-puzzolan cement
- lime-sand cement
- lime-slag cement
- low-alkali cement
- low-early strength cement
- low-grade cement
- low-heat cement
- low-limited cement
- low-slag cement
- low-strength cement
- low-temperature cement
- low-water-loss cement
- low-water-retentive portland cement
- lumnite cement
- magnesia cement
- mastic cement
- medium-setting cement
- Mendeleyev cement
- metallurgical cement
- mixed cement
- modified cement
- modified portland cement
- natural cement
- neat cement
- neat portland cement
- nepheline-sand cement
- nonshrinking cement
- normal portland cement
- normally hydrated cement
- oil-field cement
- oil-in-water emulsion cement
- oil-well cement
- oil-well portland cement
- oil-well sand cement
- ordinary cement
- oxychloride cement
- perlite cement
- perlite-gel cement
- permetallurgical cement
- phenolic-resin cement
- plain cement
- polymer cement
- porous cement
- portland cement
- portland blast-furnace-slag cement
- portland-puzzolan cement
- portland-slag cement
- pozmix cement
- premixed cement
- puzzolan cement
- puzzolan portland cement
- quick-hardening cement
- quick-setting cement
- radioactive cement
- rapid-hardening cement
- rapid-setting cement
- regular cement
- resin cement
- retarded cement
- retarded oil-well cement
- rock cement
- sacked cement
- sand cement
- scavenger cement
- sedimentary rock cement
- set cement
- slag cement
- slag-gypsum cement
- slag-lime cement
- slag-magnesia portland cement
- slag-portland cement
- slag-sand cement
- slow cement
- slow-setting cement
- sorel cement
- sound cement
- special cement
- special oil-well cement
- standard cement
- straight cement
- sulfate-resistant cement
- sulfate-resistant portland cement
- sulfo-aluminous cement
- super cement
- superrapid hardening cement
- supersulfated cement
- supersulfated metallurgical cement
- surface hydrated cement
- sursulfate cement
- thixotropic cement
- trass cement
- unretarded cement
- unset cement
- unsound cement
- water cement
- waterproof cement
- water-repellent cement
- water-retentive portland cement
- weighted cement* * *• 1) цементировать; 2) прикреплять; 3) прикрепленный• цемент -
5 цемент с малым содержанием извести
1) Oil: low-limited cement2) Drilling: low-limed cementУниверсальный русско-английский словарь > цемент с малым содержанием извести
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6 unit
1. установка; комплект; агрегат; аппарат; прибор; элемент; секция3. матем. единица4. составная деталь, сборная часть, узел; блок5. участок; забой; группа забоев6. ячейкаhydroblast concrete removal unit — устройство для гидроструйного снятия бетонной рубашки (с подводного трубопровода в случае необходимости врезки отвода)
onshore mobile drilling unit — морская передвижная буровая установка, МПБУ
rotation set packing unit — уплотнительный узел, устанавливаемый вращением
twin-hulled column-stabilized drilling unit — двухкорпусная буровая установка, стабилизированная вертикальными колоннами
wellhead casing hanger packing unit — уплотнительный узел подвески обсадной колонны на подводном устье
— box unit
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1. единица2. блок; узел; секция; агрегат; установка; аппарат; прибор3. деталь; элементhulled column-stabilized drilling offshore unit — буровое двухкорпусное морское основание со стабилизирующими вертикальными колоннами
hydroblast concrete removal unit — устройство для гидроструйного снятия бетонной рубашки (с подводного трубопровода)
sucker-rod mechanized loading and transporting unit — агрегат для механизированной погрузки и транспортировки глубинно-насосных штанг
twin-hulled column-stabilized drilling unit — двухкорпусная буровая установка, стабилизированная вертикальными колоннами
wellhead casing hanger packing unit — уплотнительный узел подвески обсадной колонны на подводном устье
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1. единица; единица измерения2. агрегат; установка; секция; узел; элемент
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единица, элемент; пачка ( небольшая по мощности совокупность пластов)
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2) блок; узел; секция; агрегат; установка; аппарат; прибор3) деталь; элемент•- unit of equipmentunit in standby — 1) резервный элемент 2) элемент, находящийся в ненагруженном резерве
- unit of gas
- unit of permeability
- unit of viscosity
- acoustic logging unit
- acoustic measuring unit
- air-balanced beam pumping unit
- ammonia absorption unit
- antifreeze agent batching unit
- API gamma-ray unit
- API neutron unit
- atmospheric-and-vacuum distillation unit
- auger drilling unit
- automatic coupling screwing unit
- automatic dewaxing unit
- automatic drilling-control unit
- automatic float-type pump-out unit
- automatic well logging unit
- automatic well measuring unit
- back-crank pumping unit
- back-in unit
- back-pressure control unit
- backup unit
- batching unit for injecting agents into gas flow
- beam-balanced pumping unit
- beamless pumping unit
- beam-pumping unit
- blasting unit
- blowout prevention operating unit
- bottomhole pumping unit
- British thermal unit
- bulk-cement transport unit
- caisson-type leg unit
- casing hanger packoff unit
- casing lubrication unit
- cathodic protection unit
- cement mixing unit
- cement plug drilling unit
- cementing unit
- central power unit
- central pumping unit
- cetane unit
- chain-driven pumping unit
- column-stabilized drilling unit
- combined atmospheric-vacuum rerun unit
- combined-balanced beam pumping unit
- compatibility test unit
- completely failed unit
- compression unit
- conventional pumping unit
- conversion unit
- corrosion unit
- counterweight beam unit
- cracking unit
- crank-balanced pumping unit
- damaged unit
- deballasting pumping unit
- dedicated maintenance unit
- deep-well pumping unit
- degassing unit
- derrick unit
- dewaxing unit
- diethylene glycol batching unit
- discrepant unit
- double-drum servicing unit
- double-valve unit
- downflow fluid-catalyst unit
- downhole television unit
- drainage unit
- drawworks unit
- drill unit
- drilling unit
- drilling-in unit
- drive-in unit
- driving unit
- electrical dewaxing unit
- electrical survey unit
- emergency storage unit
- Engler unit
- equilibrium unit
- expansion refrigeration unit
- exploder unit
- fault-free unit
- fault-location unit
- field replaceable unit
- filter unit
- filtering unit
- filtration unit
- fire-control unit
- floating drilling unit
- floating drilling offshore unit
- floating offshore unit
- fluid unit
- fluid-bed catalytic cracking unit
- foam unit
- front-mounted self-contained unit
- fuel-oil unit
- gas unit
- gas-cleaning unit
- gas-compressor unit
- gas-engine-compressor unit
- gas-gasoline processing unit
- gaslift unit
- gas-measuring unit
- gasoline tank unit
- gas-separation unit
- geared pumping unit
- geological unit
- glycol dehydration unit
- group unit
- group separation unit
- guide line tensioning unit
- heating unit
- high-speed pumping unit
- hoist unit
- hoisting unit
- Houdry fixed-bed unit
- hulled column-stabilized drilling offshore unit
- hydraulic fracturing unit
- hydraulic power pumping unit
- hydraulic pumping unit
- hydroblast concrete removal unit
- hydrocyclone unit
- hydrostatic testing unit
- idle unit
- immobile offshore drilling unit
- insert submersible pump unit
- jack-up drilling offshore unit
- known-reliability unit
- limited-life unit
- locking unit
- long-lived unit
- long-stroke pumping unit
- lowering unit
- low-speed pumping unit
- maintenance unit
- maintenance control unit
- maintenance service unit
- malfunctioning unit
- manifold unit
- marginally operating unit
- marine unit
- marine drilling unit
- master gate unit
- mat supported jack-up unit
- measuring unit
- methanol batching unit
- mobile logging unit
- mobile offshore unit
- mobile offshore drilling unit
- mud logging unit
- mud preparing unit
- mud pump valve unit
- mud pumping unit
- multiple well pumping unit
- natural gas liquefaction unit
- nonrepairable unit
- offshore unit
- offshore drilling unit
- offshore mobile drilling unit
- off-stream unit
- oil-pump unit
- oil-well pumping unit
- open truss-type leg unit
- operational test unit
- optimal replaceable unit
- outlet unit
- packing unit
- pipeless deep-well pumping unit
- pipeless subsurface pumping unit
- pneumatic pressure cement storage unit
- pole mast unit
- portable fire pump unit
- portable pumping unit
- post head unit
- pressure unit
- processing unit
- production rate measuring unit
- propane-air unit
- proportioning unit
- proration unit
- pulling unit
- pumping unit
- pumping unit on skid
- reactive turbine bottomhole unit
- reducing unit
- refrigeration unit
- released swab unit
- reliability test unit
- reliable unit
- remote pumping unit
- renewable unit
- repair unit
- repair training unit
- rigged-down swabbing unit
- rotary unit
- rotation unit
- rotation set packing unit
- sampler unit
- sampling-and-analyzing unit
- sand-master unit
- sand-washing bottom unit
- seating-and-sealing unit
- seawater filtration unit
- sedimentary unit
- selective four-coil unit
- self-contained offshore drilling unit
- self-elevating offshore drilling unit
- self-propelled manifold unit
- self-propelled semisubmersible drilling unit
- semiautomatic mud logging unit
- semisubmersible offshore drilling unit
- sensor unit
- servicing unit
- shale shaker-desander combination unit
- shooting unit
- short-stroke pumping unit
- silt master unit
- single-core cable well logging unit
- single-well completion unit
- slush pump unit
- snubbing unit
- spotty unit
- standard API unit
- standard pumping unit
- standby pumping unit
- steam unit
- stratigraphic unit
- submersible drive pump unit
- submersible electrical centrifugal pump unit
- subsurface pumping unit
- sucker-rod mechanized loading and transporting unit
- surface drilling unit
- surface pressure readout unit
- survey unit
- swabbing unit
- switchover measuring unit
- test-and-repair unit
- three-core cable well logging unit
- three-joint unit
- tractor-mounted well servicing unit
- troubleshooting unit
- tubing lubrication unit
- turbocompressor unit
- twin-hulled column-stabilized drilling unit
- twin-rerun unit
- underwater drilling unit
- upflow catalyst unit
- upflow fluid-catalyst unit
- upstream pumping unit
- vapor recovery unit
- vertical reference unit
- weight-set packing unit
- well-completion unit
- wellhead casing hanger packing unit
- well-logging unit
- well-measuring unit
- well-servicing unit
- well-servicing pump-hoist unit
- well-swabbing unit* * *• 1) установка; 2) единица• деталь• забой• участок -
7 road
дорога; путь; улица- abandoned road - access road - all-weather road - approach road - arterial road - asphaltic concrete road - backbone road - ballast road - belt road - bituminous road - bituminous penetration road - bituminous surface-treated road - black-top road - blind road - blind curved road - block-stone road - bottle-neck road - brick road - bridge road - broken-stone road - brushwood road - bumpy road - bypass road - cable road - camber road - cambered road - cart road - cement-bound road - cement-concrete road - clinker road - cold bituminous road - coloured concrete road - concrete road - congested road - construction access road - construction of roads - country road - cross-over road - crowned road - dangerous-bend road - depressed road - detour road - development road - dirt road - divided road - earth road - estate road - fair-weather road - feeder road - fine-crushed rock road - forked road - four-lane road - gravel road - greasy road - gypsum road - heavily travelled road - heavy road - heavy gumbo-soil road - hillside road - ice road - ice-covered road - improved road - levee road - limited-access road - low-cost road - low-type surfaced road - lumber plank road - macadam road - mixed bituminous road - mountain road - multi-lane road - narrow road - natural road - network of road - new road - oiled earth road - overhead road - parting road - poor road - primary road - primitive road - public road - radial road - ramp road - restricted speed road - retread road - ring road - rock road - rural road - sand-clay road - secondary road - service road - silicated road - single-lane road - snow road - soil-cement road - stabilized earth road - steep-ascent road - steep-descend road - stone road - summer road - sunk road - surface treated waterbound road - tangled road - through road - toll road - tote road - tractor road - traffic road - traffic-bound road - trail road - tram road - trunk road - turnpike road - two-coat road - two-lane road - undivided road - uneven road - unsurfaced road - untreated road - wagon road - washboard road - water-bound broken stone road - winding road - winter road - wood road* * *1. дорога, путь2. штрек- access road
- all-purpose road
- approach road
- arterial road
- asphalt road
- backbone road
- bottle-neck road
- bypass road
- classified road
- county road
- cross roads
- crossover road
- densely-trafficked road
- deplaning road
- depressed road
- detour road
- dirt road
- distribute road
- district road
- divided road
- dual carriageway road
- earth road
- elevated road
- emplaning road
- estate road
- haul road
- ice road
- interior road
- land service road
- limited access road
- logging road
- lumber road
- main road
- major road
- minor road
- motor road
- mountain road
- occupation road
- paved road
- pioneer road
- principal road
- private road
- radial road
- relief road
- residential road
- ring road
- scenic road
- secondary road
- service road
- single-purpose road
- slip road
- specific road
- subsidiary road
- toll road
- township road
- trunk road
- unpaved road
- winter snow road -
8 LCC
2) Медицина: левая коронарная заслонка (лепесток клапана, створка) (left coronary cusp)3) Американизм: Life Cycle Costs4) Военный термин: Amphibious Command Ship, Landing Craft Command, Logistics Control Code, Logistics Coordination Center, landing control center, landing craft, control, launch command and control, launch command center, launch control center, launch control console, life-cycle cost, life-cycle costing, load controlling crewman, local communications complex, logistical coordination center, пункт управления стартового комплекса5) Техника: leaderless chip carrier, local communications console6) Математика: условие нижнего покрытия (lower covering condition)7) Экономика: Low cost country8) Металлургия: Lead Coated Copper9) Оптика: leadless chip carrier, liquid crystal cell10) Сокращение: Amphibious Command Ship (USA), Land Component Commander, Launch Control Car, Launch Control Centre, Life Cycle Cost, Limited Capability Configuration, Local Command Centre, Logistics Co-ordination Centre, London County Council, launch and control center, launch control computer, an amphibious command ship, landing craft carrier, ЛКК (left craniocaudal - левая кранио - каудальная)11) Университет: Lansing Community College, Liverpool Community College12) Электроника: Leaded Chip Carrier13) Вычислительная техника: Local Control Center14) Банковское дело: Лондонская торговая палата (London Chamber of Commerce), компания с ограниченной ответственностью (limited liability company)15) Транспорт: Low Cost Carrier16) Фирменный знак: Lancaster Colony Corp17) СМИ: Last Chance Critic18) Деловая лексика: List Carbon Copy, Lowes Credit Card19) Нефтепромысловый: Load-Controlled Condition20) Образование: Leadership Correspondence Course21) Инвестиции: London Chamber of Commerce, limited liability company22) Полимеры: low color channel black23) Автоматика: Library of Congress Classification24) Телефония: Logical contact center25) Океанография: Low Cost Camera26) Энергосистемы: limiting critical contingency27) Огнеупоры: малоцементный бетон, малоцементный огнеупорный бетон, low cement castable, низкоцементный бетон, низкоцементный огнеупорный бетон28) Военно-политический термин: Logistic Coordination Centre, Logistics Coordination Centre29) Электротехника: load-carrying capability -
9 LWL
1) Военный термин: Land Warfare Laboratory, Light-Weight Launcher, Limited War Laboratory, lightweight launcher2) Техника: low water loss3) Сокращение: Lightweight Weapon Launch system, low-water line4) Нефть: cement low water-loss cement, low water-loss, с низкой водоотдачей (о цементном растворе; low water loss)5) Бурение: низкая водоотдача (low water loss)6) Океанография: Low Water Level7) Макаров: lowest water level8) Яхтенный спорт: waterline length9) Электротехника: lightning withstand level10) Аэропорты: Wells, Nevada USA -
10 lwl
1) Военный термин: Land Warfare Laboratory, Light-Weight Launcher, Limited War Laboratory, lightweight launcher2) Техника: low water loss3) Сокращение: Lightweight Weapon Launch system, low-water line4) Нефть: cement low water-loss cement, low water-loss, с низкой водоотдачей (о цементном растворе; low water loss)5) Бурение: низкая водоотдача (low water loss)6) Океанография: Low Water Level7) Макаров: lowest water level8) Яхтенный спорт: waterline length9) Электротехника: lightning withstand level10) Аэропорты: Wells, Nevada USA -
11 предел
1) General subject: Pillars (Straits) of Hercules, bitter end, border, bound, bounds, bracket, butt, butting, circumscription, compass, confine, dead-line, delimitation, end, extent, flash point, flash-point, limit, line, marge, margin, mark, measure, outpass, pale, precinct, range, reach, scope, stint, term, termination, tether, tiptop, top notch, ultimate, verge4) Colloquial: corker6) Literal: low-water mark (чего-либо), summit7) Military: overhead8) Engineering: boundary value, extreme, limen (физиологический), limitation, margin (рабочего режима)9) Agriculture: (допускаемый) margin10) Rare: terminus12) Railway term: audible limit, dangerous point, extremity (напр. подошвы рельса)13) Economy: ceiling, dent (напр. при повышении цен)14) Accounting: margin (напр. доходности), point15) Automobile industry: terminal16) Diplomatic term: dent (при повышении цен), margin (чего-л.)17) Forestry: range (измерений), tolerance18) Metallurgy: breaking point, range (напр. содержания, температуры)19) Oil: cutoff20) Banking: cap22) Mass media: horizon23) Business: extreme limit, utmost25) Sakhalin energy glossary: cutoff26) Automation: containment boundary, deadline, level change value, limit value, limiting value27) Quality control: (допустимый) margin29) Makarov: Pillars of Hercules, Straits of Hercules, bounding, brim, circumference, confidence limit, confines, flashing-point, low-water mark (низший), margin (допускаемый), mete, terminating30) Cement: limited range -
12 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
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