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1 stadium eksperymentalne
• stage of experimentsSłownik polsko-angielski dla inżynierów > stadium eksperymentalne
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2 стадия экспериментов
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3 стадия экспериментов
Plastics: stage of experimentsУниверсальный русско-английский словарь > стадия экспериментов
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4 правя
на/превръщам в правя reduce/burn to ashesпосипвам си главата с правя do penance in sackcloth and ashes; put ashes on o.'s head, cover o.'s head with ashesправя на езика ти touch wood1. (изработвам, произвеждам) make(извършвам, изпълнявам, уреждам) do(сграда, мост и пр.) make. build(грешка) make, perpetrate(чай, кафе и пр.) makeправя гаргара gargleправя добро do goodправя впечатление на някого make/produce an impression on s.o., impress s.o.правя всичко възможно do o.'s utmost, do what one canправя избори hold electionsправя засечка misfire, hang fireправя изключение make/be an exceptionправя икономии make economies, economizeправя един кръг сп. get round one lapправя комплимент pay/make a complimentправя магарии get into mischiefима още много да се прави much yet remains to be doneправя опити make experiments, experimentправя посещение pay a visit (на to)правя преброяване на населението take a census. of the populationправя предложение make it proposal (на to), ( на събрание) table a motion, ( за женитба) propose to a ladyправя сватба get married; give a wedding party, make a wedding feastще правите ли сватба? are you going to give a wedding party/reception/feast?правя сензация make/cause a sensationправя снимка take a picture/snapshotправя стъпка take a step' правя състояние make money/a fortuneправя услуга на някого do s.o. a favour/service/kindness2. (постъпвам, действувам) do, actправи, както ти казвам- do as I tell youправи, каквото прави, все-радиото слуша he does nothing but listen to the radio, he keeps listening to the radioправя, каквото си ща have o.'s own way; obtain o.'s wayправя (с някого), каквото си ща turn/twist/wind (s.o.) round o.'s (little) finger; mould s.o. like waxдобре прави той, че he does well to (c inf.)зле правите, като you are wrong toправя същото do the same; follow suit3. (представям някого за някакъв) take (s.o.) forзащо ме правиш на дете? why do you treat me like a child?тази рокля я пвави по-дебела, отколкото е this dress makes her look fatter than she is; this dress is not slimming4. (превръщам в) turn (s.th.) into, make intoправя нощта на ден turn night into day, ( работя до късно) burn the midnight oilправяна пепел burn to ashes5. (при смятане) makeпет по пет правят двадесет и пет five times five make twenty five6. (ставам причина за, предизвиквам) cause, bring aboutград глад не прави hail will/does not cause hungerтози. шум ме прави да пощурея this noise drives me madкакво правите? how are you? how are you getting along?какво ще я правиш тази къща? (за какво ти е) what are you going to do with this house? what earthly good will this house be to you?не знам какво ще правя с тези... (не ми са нужни) I have no earthly use for..., I have no idea what to do with...правя дългове make/contract debtsправя някому компания keep s.o. companyтова ви прави чест it does you creditправя поведение stand on o.'s good behaviour, put o.'s best foot forwardправя подаръци give/make presentsправя скомина на някого set s.o.'s teeth on edgeправя-струвам contrive, leave no stone unturnedправя температура run a temperatureправя си застраховка take out an insuranceправя си зъбите have o.'s teeth fixed, have o.'s teeth attended toправя си илюзии cherish illusionsправяси косата на апарат have o.'s hair permed, have a permправя си костюм (н пр.) have a suit (etc.) madeправя си къща have a house builtправя си сметката безправя make/stage/engineer a coup* * *пра̀вя,гл., мин. св. деят. прич. пра̀вил 1. ( изработвам, произвеждам) make; ( извършвам, изпълнявам, уреждам) do; ( грешка) make, perpetrate; ( чай, кафе и пр.) make; има още много да се прави much yet remains to be done; \правя впечатление на някого make/produce an impression on s.o.; \правя всичко възможно do o.’s utmost, do what one can, do o.’s best, do all one can; \правя въпрос raise an issue, разг. make a fuss, kick up a fuss (за about); \правя добро do good; \правя една обиколка спорт. get round one lap; \правя изключение make/be an exception; \правя магарии get into mischief; \правя опити make experiments, experiment; \правя преброяване на населението take a census of the population; \правя сватба give a wedding party, make a wedding feast; \правя сензация make/cause a sensation; \правя снимка take a picture/snapshot; \правя сравнения/паралели/заключения draw comparisons/parallels/conclusions; \правя стъпка take a step; \правя състояние make money/a fortune;2. ( постъпвам, действам) do, act; зле правите като you are wrong to; прави, както ти казвам do as I tell you; \правя, каквото си ща have o.’s own way; obtain o.’s way; \правя (с някого), каквото си ща turn/twist/wind (s.o.) round o.’s (little) finger; mould s.o. like wax; \правя същото do the same; follow suit;3. ( представям някого за някакъв) take (s.o.) for; защо ме правиш на дете? why do you treat me like a child? тази рокля я прави по-дебела, отколкото е this dress makes her look fatter than she is;4. ( превръщам в) turn (s.th.) into, make into; \правя на пепел burn to ashes;\правя се ( преструвам се) pretend, feign; \правя се на беден pretend to be poor; talk poor; \правя се на безразличен wear an air of indifference; \правя се на Ибрям башия play possum; \правя се на луд ( смахнат) play the fool/goat/monkey; \правя се на невинен put on an innocent air/look; \правя се, че върша нещо make a feint of doing s.th.; \правя се, че знам let on, look knowing; \правя се, че не виждам wink, connive, look the other way, (не обръщам внимание на) turn a blind eye to, pretend not to see; give (s.th./s.o.) the go-by; ( пренебрегвам) cut (s.o.) dead, give (s.o.) the cold shoulder; • какво правите? how are you? how are you getting along? не знам какво ще \правя с тези … (не ми са нужни) I have no earthly use for …, I have no idea what to do with …; \правя бебе на get (a girl) in trouble, make (a woman) pregnant; put (a woman) in the family way; \правя мили очи fawn (upon), toady; \правя някому компания keep s.o. company; \правя поведение stand on o.’s good behaviour, put o.’s best foot forward; \правя си застраховка take out an insurance; \правя си зъбите have o.’s teeth fixed, have o.’s teeth attended to; \правя си костюм (и пр.) have a suit (etc.) made; \правя си сметката без кръчмаря reckon without o.’s host; \правя си устата drop a hint (that one would like s.th.); \правя-струвам contrive, leave no stone unturned; това ви прави чест it does you credit.* * *make (изработвам, произвеждам): This house is made of bricks. - Тази къща е направена от тухли., He made money abroad. - Той направи пари в чужбина., She правяs experiments with white mice. - Тя прави експерименти с бели мишки., One and one правяs two. - Едно и едно прави две., The news made her happy. - Новината я направи щастлива., She made herself a cup of coffee. - Тя си направи чаша кафе.; do (извършвам, изпълнявам): Would you правя me a favor? - Ще ми направиш ли една услуга?, What am I going to правя now? - Какво ще правя сега?, She правяes her hair. - Тя си прави косата., I have lots of work to правя. - Имам да правя много неща.; pay (посещение): He paid me a visit. - Той ми направи посещение.; perpetrate (грешка); vitiate (недействителен за договор, юр.); pretend (се): She правяs to be sleeping. - Тя се прави на заспала.; take: правя a step ahead - правя стъпка напред;* * *1. 'ПРАВЯ състояние make money/a fortune 2. (грешка) make, perpetrate 3. (извършвам, изпълнявам, уреждам) do 4. (изработвам, произвеждам) make 5. (обрат) turn, (radical) change 6. (постъпвам, действувам) do, act 7. (превръщам в) turn (s.th.) into, make into 8. (представям някого за някакъв) take (s.o.) for 9. (при смятане) make 10. (сграда, мост и пр.) make. build 11. (ставам причина за, предизвиквам) cause, bring about 12. -ПРАВЯ си сметката без 13. ПРАВЯ (с някого), каквото си ща turn/ twist/wind (s.o.) round o.'s (little) finger;mould s.o. like wax 14. ПРАВЯ make/stage/engineer a coup 15. ПРАВЯ бебе на get (a girl) ;n trouble, make (a woman) pregnant;put (a woman) in the family way 16. ПРАВЯ впечатление на някого make/produce an impression on s.o., impress s.o. 17. ПРАВЯ всичко възможно do o.'s utmost, do what one can 18. ПРАВЯ въпрос raise an issue, разг. make a fuss, kick up a fuss (за about) 19. ПРАВЯ гаргара gargle 20. ПРАВЯ добро do good 21. ПРАВЯ дългове make/contract debts 22. ПРАВЯ един кръг сп. get round one lap 23. ПРАВЯ засечка misfire, hang fire 24. ПРАВЯ избори hold elections 25. ПРАВЯ изключение make/be an exception 26. ПРАВЯ икономии make economies, economize 27. ПРАВЯ комплимент pay/make a compliment 28. ПРАВЯ магарии get into mischief 29. ПРАВЯ мили очи fawn (upon), toady 30. ПРАВЯ на езика ти touch wood. 31. ПРАВЯ нощта на ден turn night into day, (работя до късно) burn the midnight oil 32. ПРАВЯ някому компания keep s.o. company 33. ПРАВЯ опити make experiments, experiment 34. ПРАВЯ поведение stand on o.'s good behaviour, put o.'s best foot forward 35. ПРАВЯ подаръци give/make presents 36. ПРАВЯ посещение pay a visit (на to) 37. ПРАВЯ преброяване на населението take a census. of the population 38. ПРАВЯ предложение make it proposal (на to), (на събрание) table a motion, (за женитба) propose to a lady: ПРАВЯ сватба get married;give a wedding party, make a wedding feast 39. ПРАВЯ сензация make/cause a sensation 40. ПРАВЯ си застраховка take out an insurance 41. ПРАВЯ си зъбите have o.'s teeth fixed, have o.'s teeth attended to 42. ПРАВЯ си илюзии cherish illusions 43. ПРАВЯ си костюм (н пр.) have a suit (etc.) made 44. ПРАВЯ си къща have a house built 45. ПРАВЯ скомина на някого set s.o.'s teeth on edge 46. ПРАВЯ снимка take a picture/snapshot 47. ПРАВЯ стъпка take a step 48. ПРАВЯ същото do the same;follow suit 49. ПРАВЯ температура run a temperature 50. ПРАВЯ услуга на някого do s.o. a favour/service/kindness 51. ПРАВЯ, каквото си ща have o.'s own way;obtain o.'s way 52. ПРАВЯ-струвам contrive, leave no stone unturned 53. ПРАВЯна пепел burn to ashes 54. ПРАВЯси косата на апарат have o.'s hair permed, have a perm 55. град глад не прави hail will/does not cause hunger 56. добре прави той, че he does well to (c inf.) 57. защо ме правиш на дете? why do you treat me like a child? 58. зле правите, като уоu are wrong to 59. има още много да се прави much yet remains to be done 60. какво правите? how are you?how are you getting along? 61. какво ще я правиш тази къща? (за какво ти е) what are you going to do with this house?what earthly good will this house be to you? 62. на/превръщам в ПРАВЯ reduce/burn to ashes 63. не знам какво ще правя с тези... (не ми са нужни) I have no earthly use for..., I have no idea what to do with... 64. пет по пет правят двадесет и пет five times five make twenty five 65. посипвам си главата с ПРАВЯ do penance in sackcloth and ashes;put ashes on o.'s head, cover o.'s head with ashes 66. прави, каквото прави, все-радиото слуша he does nothing but listen to the radio, he keeps listening to the radio 67. прави, както ти казвам-do as I tell you 68. ставам на ПРАВЯ be reduced to ashes 69. тази рокля я пвави по-дебела, отколкото е this dress makes her look fatter than she is;this dress is not slimming 70. това ви прави чест it does you credit 71. този. шум ме прави да пощурея this noise drives me mad 72. тури му ПРАВЯ let bygones be bygones, forget it 73. чaй, кафе и пр.) make 74. ще правите ли сватба? are you going to give a wedding party/reception/feast? -
5 experimentación
f.1 experimentation, testing.2 test.* * *1 experimentation, experimenting, testing* * ** * *femenino experimentation* * *Ex. A critical abstract normally comments the adequacy of experimentation and survey methodology.----* experimentación con animales = animal experimentation.* * *femenino experimentation* * *Ex: A critical abstract normally comments the adequacy of experimentation and survey methodology.
* experimentación con animales = animal experimentation.* * *experimentationexperimentación con seres vivos experiments on live animals* * *
experimentación sustantivo femenino experimentation
' experimentación' also found in these entries:
English:
rocketry
* * *experimentation;experimentación con animales vivos experiments on live animals;en fase de experimentación at the experimental stage* * *f2 en laboratorio experiments pl* * * -
6 ставить
1) General subject: align, aline, ante (на карту), back (на лошадь), back, billet, drive, get up (пьесу), interpose, make, mount (пьесу), pedestal, pitch (крикетные воротца и т. п.), place, plank, pose, pose (вопрос, задачу), posit, position, post, post paper, posturize (вопрос, задачу), present (пьесу), produce, produce (пьесу, кинокартину), put, put in (у власти, на должность), put up (пьесу), raise (вопрос), range (в определённом порядке), replace, set a watch (правильно), set out, set the hands of a clock (правильно), set up, shelve, ship (мачту, руль), stable, stage (пьесу), stage manage, stage-manage (пьесу, оперу), stake, stand, station, step (мачту), wager (на что-л.), put on (на сцене; to put a play on the stage - поставить пьесу.), bring out (пьесу), get up (пьесу), place a bet (напр., на кого-л. - on smb.), (оценку) assign4) Medicine: crank up (капельницу)5) Colloquial: stick6) Military: lay (дымовую завесу с самолёта)7) Agriculture: carry out experiments8) Construction: park10) Religion: appoint13) Automobile industry: fit (заклёпку)14) Theatre: direct (о режиссёре)15) Jargon: spin18) Automation: seat -
7 comprobar
v.1 to check.tengo que comprobar si lo tengo I have to check o see if I've got it¿podrías comprobar a qué hora sale el tren? could you check what time the train leaves?Ricardo comprobó los resultados Richard checked the results.2 to prove.se ha comprobado que la vacuna es efectiva the vaccine has been proved to be effective3 to find.María comprobó la solución Mary found the solution.* * *1 (verificar) to verify, check2 (demostrar) to prove3 (observar) to see, observe4 (confirmar) to confirm* * *verb1) to check2) verify, probe* * *VT1) (=examinar) [+ billete, documento, frenos] to checktendré que comprobar si se han cumplido los objetivos — I shall have to see o check whether the objectives have been met
necesito algún documento para comprobar su identidad — I need some document that proves your identity, I need some proof of identity
2) (=confirmar) [+ teoría, existencia] to prove; [+ eficacia, veracidad] to verify, confirmpudimos comprobar que era verdad — we were able to verify o confirm o establish that it was true
3) frm (=darse cuenta) to realize* * *verbo transitivoa) ( verificar) <operación/resultado> to checkcomprueba si funciona — see o check if it works
b) ( demostrar) to prove¿tiene algún documento que compruebe su identidad? — do you have any proof of identity?
c) ( darse cuenta) to realize* * *= check, cross check, make + sure, verify, vet, double-check [doublecheck], collate, test, check out, check for.Ex. This would be the last stage in the compilation of the scheme in order to check that the scheme seems likely to be effective.Ex. All Allibone's work reveals how important it is for bibliographers to cross check their references and not take earlier work at its face value.Ex. DOBIS/LIBIS first checks the borrower's number to make sure that it is in the files and is valid.Ex. Cataloguers use the NUC and other LC catalogues to verify authors and titles and as sources of authoritative catalogue records.Ex. All three types of material, when first received by DG XIII, are submitted to the Technological Information and Patents Division of DG XIII in order to vet items for possible patentable inventions.Ex. Duplicates should be double-checked before being handled as duplicates.Ex. It is no longer necessary to collate unaided, since copies can now be compared mechanically with a Hinman collating machine, which rapidly shows up all variation between them.Ex. Inmate library workers often test a new librarian, but once he or she has passed the test, they usually become very protective and staunch promoters of the library.Ex. Where problems do arise it is sensible to check out the training programme before blaming the assistant for poor performance of duties.Ex. This was important before computers were invented, when calculations were all done by hand, and also were done repeatedly to check for calculation errors.----* comprobar con = check against.* comprobar de antemano = pretest [pre-test], pilot-test.* comprobar en la práctica real = field-test.* comprobar las necesidades económicas = means test.* comprobar la validez = pilot-test.* comprobar la validez de = test + the validity of.* comprobar los ingresos = means test.* comprobar si el contenido de un vídeo es adecuado o no = vet + video.* comprobar si un dispositivo o dirección web está activa = ping.* comprobar una hipótesis = test + hypothesis.* haber sido comprobado exhaustivamente = be thoroughly tested.* sin comprobar = untested.* volver a comprobar = check back.* * *verbo transitivoa) ( verificar) <operación/resultado> to checkcomprueba si funciona — see o check if it works
b) ( demostrar) to prove¿tiene algún documento que compruebe su identidad? — do you have any proof of identity?
c) ( darse cuenta) to realize* * *= check, cross check, make + sure, verify, vet, double-check [doublecheck], collate, test, check out, check for.Ex: This would be the last stage in the compilation of the scheme in order to check that the scheme seems likely to be effective.
Ex: All Allibone's work reveals how important it is for bibliographers to cross check their references and not take earlier work at its face value.Ex: DOBIS/LIBIS first checks the borrower's number to make sure that it is in the files and is valid.Ex: Cataloguers use the NUC and other LC catalogues to verify authors and titles and as sources of authoritative catalogue records.Ex: All three types of material, when first received by DG XIII, are submitted to the Technological Information and Patents Division of DG XIII in order to vet items for possible patentable inventions.Ex: Duplicates should be double-checked before being handled as duplicates.Ex: It is no longer necessary to collate unaided, since copies can now be compared mechanically with a Hinman collating machine, which rapidly shows up all variation between them.Ex: Inmate library workers often test a new librarian, but once he or she has passed the test, they usually become very protective and staunch promoters of the library.Ex: Where problems do arise it is sensible to check out the training programme before blaming the assistant for poor performance of duties.Ex: This was important before computers were invented, when calculations were all done by hand, and also were done repeatedly to check for calculation errors.* comprobar con = check against.* comprobar de antemano = pretest [pre-test], pilot-test.* comprobar en la práctica real = field-test.* comprobar las necesidades económicas = means test.* comprobar la validez = pilot-test.* comprobar la validez de = test + the validity of.* comprobar los ingresos = means test.* comprobar si el contenido de un vídeo es adecuado o no = vet + video.* comprobar si un dispositivo o dirección web está activa = ping.* comprobar una hipótesis = test + hypothesis.* haber sido comprobado exhaustivamente = be thoroughly tested.* sin comprobar = untested.* volver a comprobar = check back.* * *vt1 (verificar) ‹operación/resultado› to check¿le compruebo el nivel del aceite? shall I check the oil for you?compruébalo tú mismo si no me crees check o see for yourself if you don't believe mevoy a comprobar si funciona I'm going to see o check if it works2 (demostrar) to prove¿tiene algún documento que compruebe su identidad? do you have any proof of identity o any identification?3 (darse cuenta) to realizeal examinarlo comprobó que le faltaba una pieza when he examined it he realized that there was a part missingcomprobé con tristeza que era cierto I was sad to discover that it was true4 «prueba» (confirmar) to confirm* * *
comprobar ( conjugate comprobar) verbo transitivo
comprobar verbo transitivo to check: déjame que compruebe que llevas bien atada la corbata, let me check to see whether your necktie is tied correctly
' comprobar' also found in these entries:
Spanish:
constatar
- controlar
- interesar
- ver
English:
authenticity
- check
- crosscheck
- double-check
- pace
- prove
- try
- verify
- test
* * *comprobar vt1. [revisar] to check;comprueba los frenos antes de salir de viaje check your brakes before setting out on a journey;tengo que comprobar si lo tengo I have to check o see if I've got it2. [averiguar] to check;¿podrías comprobar a qué hora sale el tren? could you check what time the train leaves?;he comprobado en carne propia que estabas en lo cierto I found out o discovered through personal experience that you were right3. [demostrar] to prove;esto comprueba que yo tenía razón this proves that I was right;se ha comprobado que la vacuna es efectiva the vaccine has been proved to be effective* * *v/t1 check* * *comprobar {19} vt1) : to verify, to check2) : to prove* * *comprobar vb (verificar) to check -
8 ставити
1) ( розміщати) to put, to place, to set; to position; to standставити вартового військ. — to post a sentry
ставити в ряд — to put in a row, to align, to range
ставити на постій військ. — to billet, to quarter
2) ( установлювати) to install; to put up, to erect3) (висувати, пропонувати) to raise, to put, to propose, to move4) ( на сцені) to stage, to produceставити п'єсу — to stage ( to mount) a play, to produce a play
5) ( в азартних іграх) to stakeставити все на карту перен. — to stake one's all
6) (гірчичник, компрес) to apply, to put on7)ставити голос муз. — to train ( to place) smb.'s voice
ставити залік (кому-небудь з чого-небудь) — to pass (in+to)
ставити за умову — to stipulate (on, that)
ставити пастку — to set a trap (to)
ставити собі за мету — to aim at, to make it one's aim
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9 Wright, Wilbur
SUBJECT AREA: Aerospace[br]b. 16 April 1867 Millville, Indiana, USAd. 30 May 1912 Dayton, Ohio, USA[br]American co-inventor, with his brother Orville Wright (b. 19 August 1871 Dayton, Ohio, USA; d. 30 January 1948 Dayton, Ohio, USA), of the first powered aeroplane capable of sustained, controlled flight.[br]Wilbur and Orville designed and built bicycles in Dayton, Ohio. In the 1890s they developed an interest in flying which led them to study the experiments of gliding pioneers such as Otto Lilienthal in Germany, and their fellow American Octave Chanute. The Wrights were very methodical and tackled the many problems stage by stage. First, they developed a method of controlling a glider using movable control surfaces, instead of weight-shifting as used in the early hand-gliders. They built a wind tunnel to test their wing sections and by 1902 they had produced a controllable glider. Next they needed a petrol engine, and when they could not find one to suit their needs they designed and built one themselves.On 17 December 1903 their Flyer was ready and Orville made the first short flight of 12 seconds; Wilbur followed with a 59-second flight covering 853 ft (260 m). An improved design, Flyer II, followed in 1904 and made about eighty flights, including circuits and simple ma-noeuvres. In 1905 Flyer III made several long flights, including one of 38 minutes covering 24½ miles (39 km). Most of the Wrights' flying was carried out in secret to protect their patents, so their achievements received little publicity. For a period of two and a half years they did not fly, but they worked to improve their Flyer and to negotiate terms for the sale of their invention to various governments and commercial syndi-cates.In 1908 the Wright Model A appeared, and when Wilbur demonstrated it in France he astounded the European aviators by making several flights lasting more than one hour and one of 2 hours 20 minutes. Considerable numbers of the Model A were built, but the European designers rapidly caught up and overtook the Wrights. The Wright brothers became involved in several legal battles to protect their patents: one of these, with Glenn Curtiss, went on for many years. Wilbur died of typhoid fever in 1912. Orville sold his interest in the Wright Company in 1915, but retained an interest in aeronautical research and lived on to see an aeroplane fly faster than the speed of sound.[br]Principal Honours and DistinctionsRoyal Aeronautical Society (London) Gold Medal (awarded to both Wilbur and Orville) May 1909. Medals from the Aero Club of America, Congress, Ohio State and the City of Dayton.Bibliography1951, Miracle at Kitty Hawk. The Letters of Wilbur \& Orville Wright, ed. F.C.Kelly, New York.1953, The Papers of Wilbur and Orville Wright, ed. Marvin W.McFarland, 2 vols, New York.Orville Wright, 1953, How We Invented the Aeroplane, ed. F.C.Kelly, New York.Further ReadingA.G.Renstrom, 1968, Wilbur \& Orville Wright. A Bibliography, Washington, DC (with 2,055 entries).C.H.Gibbs-Smith, 1963, The Wright Brothers, London (reprint) (a concise account).J.L.Pritchard, 1953, The Wright Brothers', Journal of the Royal Aeronautical Society (December) (includes much documentary material).F.C.Kelly, 1943, The Wright Brothers, New York (reprint) (authorized by Orville Wright).H.B.Combs with M.Caidin, 1980, Kill Devil Hill, London (contains more technical information).T.D.Crouch, 1989, The Bishop's Boys: A Life of Wilbur \& Orville Wright, New York (perhaps the best of various subsequent biographies).JDS -
10 с целью
•The mixture is cooled to bring about the crystallization of...
•This substance is added to foundry sand for the purpose (or for purposes) of retaining (or to retain) moisture.
•The stages are cascaded with the goal of (or with the aim of, or for the purpose of) maximizing the power gain of each stage (or with the aim to maximize...).
•These units have been developed with a view to speeding repairs.
•The heat treatment is carried out with the object (or intent) of producing...
•Numerous laboratory experiments have been conducted in an effort to substantiate what is...
Русско-английский научно-технический словарь переводчика > с целью
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11 указывать
(= указать, отмечать) indicate, specify, point out, show• В обсуждениях такого рода необходимо указывать... - In discussions of this kind it is necessary to point out...• В то же самое время данные результаты указывают, что... - At the same time, the results indicate that...• Возможно, стоит указать, что... - It is perhaps worth pointing out that...• Вряд ли имеется необходимость указывать, что... - It is hardly necessary to point out that...• Все имеющиеся свидетельства указывают, что... - All available evidence indicates that...• Все опубликованные отчеты указывают на наличие... - All the published reports point to the presence of...• Данные эксперименты указывали, что... - These experiments indicated that...• Для специалистов стоит указать, что... - It is worth pointing out to experts that the spaces of...• Другие исследования также указывали, что... - Other studies have also indicated that...• Знак минус в уравнении (4) указывает, что... - The minus sign in (4) indicates that...• Изучение... указывает, что... - Studies of... indicate that...• Многие исследователи это отвергают. Они указывают, что... - Many scientists object to this. They point out that...• Можно было бы указать, что... - It may be pointed out that...• Мы не будем обсуждать детально ни одну из этих концепций, а просто хотим указать, что... - We shall not discuss any of these concepts in detail, but merely wish to point out that...• Мы уже указали важность (чего-л). - We have indicated the relevance of...• Мы. хотим указать явно, что... - We wish to point out explicitly that...• На этом этапе необходимо указать очень важный факт. - At this stage a very important fact must be pointed out.• Наконец, данная модель должна указывать... - Finally, the model must indicate...• Наконец, мы должны указать на полезность... - Finally, we should point out the usefulness of...• Накопленный опыт начал нам указывать, что... - Our accumulated experience began to indicate that...• Наши оценки указывают, что... - Our estimates indicate that...• Несколько исследований указывают, что... - Several studies indicate that...• Однако будет честно указать, что... - It is fair, though, to point out that...• Однако дальнейшие проверки указывали, что... - But further tests indicated that...• Однако существующие экспериментальные данные указывают, что... - Present experimental evidence indicates, however, that...• Однако, как указывает Смит [1], безусловно существуют примеры... - But, as Smith [lj points out, there are certainly examples of...• Однако, как указывает Смит [lj, недостаточно, чтобы... - But, as Smith [1] points out, it is not sufficient that...• Одним интересным свойством этих результатов является то, что они указывают... - One interesting feature of these results is that they indicate...• Позднее мы укажем, что... - We will indicate later that...• Приведем исключения, которые указывает Смит в статье [1]. - Smith [1] points out certain exceptions as follows.• Различные авторы уже указывали, что... - It has been pointed out by various writers that...• С другой стороны, недавние данные указывают, что... - On the other hand, recent findings indicate that...• Смит [1] указал, что... - Smith [1] has indicated that...• Эти явления указывают на существование... - These phenomena point to the existence of...• Это был Эйнштейн, кто указал, что... - It was Einstein who pointed out that...• Это довольно настойчиво указывает, что... - This suggests quite strongly that...• Это обосновывает приведенную выше интерпретацию и указывает, что... - This justifies the above interpretation and indicates that... -
12 retourner
retourner [ʀ(ə)tuʀne]➭ TABLE 1━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━1. transitive verba. ( = mettre dans l'autre sens) [+ caisse, seau] to turn upside down ; [+ matelas, carte, omelette] to turn overb. [+ terre] to turn overc. ( = mettre l'intérieur à l'extérieur) [+ parapluie, sac, vêtement] to turn inside out ; [+ col] to turnd. ( = orienter dans le sens opposé) [+ mot, phrase] to turn rounde. ( = renvoyer) [+ lettre, marchandise] to returnf. ( = bouleverser) [+ maison, pièce] to turn upside down ; [+ personne] to shake• il a tout retourné dans la maison pour retrouver ce livre he turned the whole house upside down to find that bookg. ( = tourner plusieurs fois) retourner une idée dans sa tête to turn an idea over in one's mind2. intransitive verba. ( = aller à nouveau) to return, to go back• retourner en Italie/à la mer to return or go back to Italy/to the seaside• retourner en arrière or sur ses pas to turn back• il retourne demain à son travail/à l'école he's going back to work/to school tomorrow4. reflexive verba. [personne couchée, automobiliste, véhicule] to turn over ; [bateau] to capsize• il doit se retourner dans sa tombe ! he must be turning in his grave!b. ( = tourner la tête) to turn round• tout le monde se retournait sur lui or sur son passage everyone turned round as he went byc. [situation] to be turned round• se retourner contre qn [personne] to turn against sb ; [acte, situation] to backfire on sb ; ( = poursuivre en justice) to take court action against sb━━━━━━━━━━━━━━━━━* * *ʀ(ə)tuʀne
1.
verbe transitif (+ v avoir)1) ( changer de côté) to turn [something] over [seau, steak]; to turn [matelas]2) ( mettre à l'envers) to turn [something] inside out [vêtement, sac]3) ( tourner à plusieurs reprises) to turn over [terre]; to toss [salade, foin]retourner une idée dans sa tête — fig to turn an idea over in one's mind
4) ( changer d'orientation) to return [compliment, critique]5) ( bouleverser) [personne] to turn [something] upside down [maison]; [nouvelle, spectacle] to shake [personne]je suis encore tout retourné — (colloq) I'm still quite shaken
6) ( renvoyer) to send [something] back, to return [colis, lettre]
2.
verbe intransitif (+ v être) to go back (à to), to return (à to)
3.
se retourner verbe pronominal1) ( tourner la tête) to turn aroundpartir sans se retourner — lit, fig to leave without a backward glance
elle est tellement grande que tout le monde se retourne sur son passage — she's so tall that everybody turns to look as she goes past
2) to turn over3) ( s'organiser) to get organized4) ( prendre un tour inverse)se retourner contre quelqu'un — [personne, animal] to turn against somebody; [situation, agissements] to backfire on somebody
5) ( se tordre)6) ( repartir)
4.
verbe impersonnel••retourner quelqu'un comme une crêpe (colloq) or un gant — (colloq) to make somebody change their mind completely
* * *ʀ(ə)tuʀne1. vt1) (= changer de côté) [matelas, crêpe] to turn overElle a retourné la crêpe. — She turned the pancake over.
2) (= renverser) to turn upside downIl a retourné la poubelle. — He turned the bin upside down.
3) [sac, vêtement] to turn inside outretourner sa veste fig — to change sides, to go over to the other side
4) [terre, sol, foin] to turn over5) [arme] to turn roundretourner une arme contre soi — to turn a weapon against o.s.
6) [argument] to turn round7) (= émouvoir) [personne] to shake8) (= renvoyer)2. vi(= aller, revenir)retourner à [endroit] — to go back to, to return to, [état, activité] to return to, to go back to
3. vb impers(= s'agir)* * *retourner verb table: aimerA vtr (+ v avoir)1 ( changer de côté) to turn [sth] over [seau, caisse, steak, poisson]; to turn [matelas]; retourner une carte à jouer ( figure visible) to turn up a playing card; ( figure pas visible) to put a playing card face down; retourner un tableau contre le mur to turn a painting to the wall;2 ( mettre à l'envers) to turn [sth] inside out [vêtement, sac]; Cout to turn [vêtement, coussin, col]; un coup de vent a retourné son parapluie a gust of wind turned his umbrella inside out; il a retourné ses poches à la recherche de quelques sous he turned his pockets inside out looking for some change;3 ( tourner à plusieurs reprises) to turn over [terre]; to toss [salade, foin]; retourner une idée or pensée dans sa tête to turn an idea ou a thought over in one's mind;4 ( changer d'orientation) to return [compliment, critique]; retourner la situation to reverse the situation; elle a retourné le pistolet contre elle-même she then turned the gun on herself; si tu retournes l'argument contre lui if you turn his own argument against him;5 ( bouleverser) [personne] to turn [sth] upside down [maison, pièce]; [nouvelle, spectacle] to shake [personne]; elle a retourné toute la maison pour retrouver la facture she turned the house upside down trying to find the bill; je suis encore tout retourné○ I'm still quite shaken;6 ( renvoyer) to send [sth] back, to return [colis, lettre, marchandise].B vi (+ v être)1 ( aller à nouveau) to go back, to return (à to); retourner dans son village natal to return to the village where one was born; retourner chez le dentiste/médecin pour une nouvelle visite to go back to the dentist's/doctor's for another visit; retourner à l'école/au bureau to go back to school/to the office; je n'y suis jamais retourné depuis I've never been back ou never returned since;2 ( à un état antérieur) to go back (à to), to return (à to); animal qui est retourné à l'état sauvage animal that has gone back ou returned to its wild state; retourner à ses premières amours liter to return to one's first love; il est retourné à son laboratoire et à ses expériences he went back to his laboratory and to his experiments; les biens retournent à leur légitime possesseur the property reverts to its rightful owner.C se retourner vpr1 ( tourner la tête) to turn around, to turn round GB; je l'ai appelée et elle s'est retournée I called her and she turned around; partir sans se retourner lit, fig to leave without once looking back; elle est tellement grande que tout le monde se retourne sur son passage she's so tall that everybody turns to look as she goes past;2 ( changer de position) [personne couchée] to turn over; [véhicule, automobiliste] to turn over, to overturn; se retourner sur le dos/ventre to turn over onto one's back/stomach; il n'a pas arrêté de se retourner (dans son lit) pendant toute la nuit he kept tossing and turning all night long; la voiture s'est retournée dans un fossé the car overturned into a ditch;3 ( s'organiser) to get organized; ça lui laissera le temps de se retourner it'll give her time to sort things out ou to get organized;4 ( prendre un tour inverse) se retourner contre qn [personne, animal] to turn against sb; [situation, agissements] to backfire on sb; se retourner contre ses alliés to turn on one's allies; ses arguments se sont retournés contre lui his arguments backfired on him;5 ( se tordre) elle s'est retourné le doigt/un ongle she bent back her finger/a nail;D v impers j'aimerais savoir de quoi il retourne I'd like to know what's going on.retourner qn comme une crêpe○ or un gant○ to make sb change their mind completely.[rəturne] verbe transitif (auxiliaire avoir)1. [orienter dans le sens contraire] to turn round ou around (separable)retourner une arme contre ou sur quelqu'un to turn a weapon on somebodyje lui ai retourné son ou le compliment I returned the compliment2. [renvoyer - colis, lettre] to send back (separable)3. [mettre à l'envers - literie] to turn round ou around ; [ - carte à jouer] to turn up (separable) ; [ - champ, paille] to turn over (separable) ; [ - verre] to turn upside down ; [ - grillade] to turn over (separable) ; [ - gant, poche] to turn inside out4. [mélanger - salade] to toss5. [fouiller - maison, pièce] to turn upside down6. [examiner - pensée]7. (familier) [émouvoir]————————[rəturne] verbe intransitif (auxiliaire être)si tu étais à ma place, tu retournerais le voir? if you were me, would you (ever) go and see him again?je retournai la voir une dernière fois I paid her one ou my last visitretourner à sa place [sur son siège] to go back to one's seat————————[rəturne] verbe impersonnelpeut-on savoir de quoi il retourne? what is it all about?, what exactly is going on?————————retourner à verbe plus préposition————————se retourner verbe pronominal intransitif1. [tourner la tête] to turn round2. [se mettre sur l'autre face] to turn overse retourner sur le dos/ventre to turn over on one's back/stomach3. [se renverser - auto, tracteur] to overturn, to turn over4. [réagir] to sort things outa. [de décider] they won't give me time to make a decisionb. [de me reprendre] they won't give me time to sort things outle lendemain, la situation s'était retournée the following day, the situation had changed beyond recognition6. [déplacement]s'en retourner [partir]a. to depart, to leaveb. [rentrer] to make one's way back————————se retourner verbe pronominal transitifse retourner un ongle/doigt to twist a nail/finger————————se retourner contre verbe pronominal plus préposition1. [agir contre] -
13 Goddard, Dr Robert Hutchings
SUBJECT AREA: Aerospace[br]b. 5 October 1882 Worcester, Massachusetts, USAd. 10 August 1945 Baltimore, Maryland, USA[br]American inventory developer of rocket propulsion.[br]At the age of seventeen Goddard climbed a tree and, seeing the view from above, he became determined to make some device with which to ascend towards the planets. In an autobiography, published in 1959 in the journal Astronautics, he stated, "I was a different boy when I descended the ladder. Life now had a purpose for me." His first idea was to launch a projectile by centrifugal force, but in 1909 he started to design a rocket that was to be multi-stage and fuelled by liquid oxygen and hydrogen. Not long before the First World War he produced a report, "A method of reaching extreme altitudes", which was for the Smithsonian Institution and was published in book form in 1919. During the war he worked on solid-fuelled rockets as weapons. His book contained notes on the amount of fuel required to raise 1 lb (454 g) of payload to an infinite altitude. He incurred ridicule as "the moon man" when he proposed the use of flash powder to indicate successful arrival on the moon. In 1923 he severed his connections with military work and returned to the University of Massachusetts. On 16 March 1926 he launched the world's first liquid-fuelled rocket from his aunt's farm in Auburn, Massachusetts; powered by gasoline and liquid oxygen, it flew to a height of 12 m (40 ft) and travelled 54 m (177 ft) in 2.4 seconds.In November 1929 he met the aviator Charles Lindbergh, who persuaded both the Guggenheim Foundation and the Carnegie Institute to support Goddard's experiments financially. He moved to the more suitable location of the Mescalere Ranch, near Roswell, New Mexico, where he worked until 1941. His liquid-fuelled rockets reached speeds of 1,100 km/h (700 mph) and heights of 2,500 m (8,000ft). He investigated the use of the gyroscope to steady his rockets and the assembly of power units in clusters to increase the total thrust. In 1941 he moved to the naval establishment at Annapolis, Maryland, working on liquid-fuelled rockets to assist the take-off of aircraft from carriers. He worked for the US Government on this and the development of military rockets until his death from throat cancer in 1945. In all, he was granted 214 patents, roughly three per year of his life.In 1960 the US Government admitted infringement of Goddard's patents during the rocket programme of the 1950s and awarded his widow a payment of $1,000,000, while the National Aeronautics and Space Administration (NASA) honoured him by naming the Goddard Spaceflight Center near Washington, DC, after him. The Goddard Memorial Library at Clark University, in his home town of Worcester, Massachusetts, was also named in his honour.[br]Further ReadingA.Osman, 1983, Space History, London: Michael Joseph. P.Marsh, 1985, The Space Business, Harmondsworth: Penguin.K.C.Parley, 1991, Robert H.Goddard, Englewood Cliffs, NJ: Silver Burdett Press. T.Streissguth, 1994, Rocket Man: The Story of Robert Goddard, Minneapolis: Carolrhoda Books.IMcNBiographical history of technology > Goddard, Dr Robert Hutchings
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14 Junghans, Siegfried
SUBJECT AREA: Metallurgy[br]b. 1887d. 1954[br]German pioneer of the continuous casting of metals.[br]Junghans was of the family that owned Gebrüder Junghans, one of the largest firms in the German watch-and clockmaking industry. From 1906 to 1918 he served in the German Army, after which he took a course in metallurgy and analytical chemistry at the Technical High School in Stuttgart. Junghans was then given control of the brassworks owned by his family. He wanted to make castings simply and cheaply, but he found that he lacked the normal foundry equipment. By 1927, formulating his ideas on continuous casting, he had conceived a way of overcoming this deficiency and began experiments. By the time the firm was taken over by Wieland-Werke AG in 1931, Junghans had achieved positive results. A test plant was erected in 1932, and commercial production of continuously cast metal followed the year after. Wieland told Junghans that a brassfounder who had come up through the trade would never have hit on the idea: it took an outsider like Junghans to do it. He was made Technical Director of Wielands but left in 1935 to work privately on the development of continuous casting for all metals. He was able to license the process for non-ferrous metals during 1936–9 in Germany and other countries, but the Second World War interrupted his work; however, the German government supported him and a production plant was built. In 1948 he was able to resume work on the continuous casting of steel, which he had been considering since 1936. He pushed on in spite of financial difficulties and produced the first steel by this process at Schorndorf in March 1949. From 1950 he made agreements with four firms to work towards the pilot plant stage, and this was achieved in 1954 at Mannesmann's Huckingen works. The aim of continuous casting is to bypass the conventional processes of casting molten steel into ingots, reheating the ingots and shaping them by rolling them in a large mill. Essentially, in continuous casting, molten steel is drawn through the bottom of a ladle and down through a water-cooled copper mould. The unique feature of Junghans's process was the vertically reciprocating mould, which prevented the molten metal sticking as it passed through. A continuous length of steel is taken off and cooled until it is completely solidified into the required shape. The idea of continuous casting can be traced back to Bessemer, and although others tried to apply it later, they did not have any success. It was Junghans who, more than anybody, made the process a reality.[br]Further ReadingK.Sperth and A.Bungeroth, 1953, "The Junghans method of continuous casting of steel", Metal Treatment and Drop Forging, Mayn.J.Jewkes et al., 1969, The Sources of Invention, 2nd edn, London: Macmillan, pp. 287 ff.LRD -
15 Maxim, Sir Hiram Stevens
[br]b. 5 February 1840 Brockway's Mills, Maine, USAd. 24 November 1916 Streatham, London, England[br]American (naturalized British) inventor; designer of the first fully automatic machine gun and of an experimental steam-powered aircraft.[br]Maxim was born the son of a pioneer farmer who later became a wood turner. Young Maxim was first apprenticed to a carriage maker and then embarked on a succession of jobs before joining his uncle in his engineering firm in Massachusetts in 1864. As a young man he gained a reputation as a boxer, but it was his uncle who first identified and encouraged Hiram's latent talent for invention.It was not, however, until 1878, when Maxim joined the first electric-light company to be established in the USA, as its Chief Engineer, that he began to make a name for himself. He developed an improved light filament and his electric pressure regulator not only won a prize at the first International Electrical Exhibition, held in Paris in 1881, but also resulted in his being made a Chevalier de la Légion d'honneur. While in Europe he was advised that weapons development was a more lucrative field than electricity; consequently, he moved to England and established a small laboratory at Hatton Garden, London. He began by investigating improvements to the Gatling gun in order to produce a weapon with a faster rate of fire and which was more accurate. In 1883, by adapting a Winchester carbine, he successfully produced a semi-automatic weapon, which used the recoil to cock the gun automatically after firing. The following year he took this concept a stage further and produced a fully automatic belt-fed weapon. The recoil drove barrel and breechblock to the vent. The barrel then halted, while the breechblock, now unlocked from the former, continued rearwards, extracting the spent case and recocking the firing mechanism. The return spring, which it had been compressing, then drove the breechblock forward again, chambering the next round, which had been fed from the belt, as it did so. Keeping the trigger pressed enabled the gun to continue firing until the belt was expended. The Maxim gun, as it became known, was adopted by almost every army within the decade, and was to remain in service for nearly fifty years. Maxim himself joined forces with the large British armaments firm of Vickers, and the Vickers machine gun, which served the British Army during two world wars, was merely a refined version of the Maxim gun.Maxim's interests continued to occupy several fields of technology, including flight. In 1891 he took out a patent for a steam-powered aeroplane fitted with a pendulous gyroscopic stabilizer which would maintain the pitch of the aeroplane at any desired inclination (basically, a simple autopilot). Maxim decided to test the relationship between power, thrust and lift before moving on to stability and control. He designed a lightweight steam-engine which developed 180 hp (135 kW) and drove a propeller measuring 17 ft 10 in. (5.44 m) in diameter. He fitted two of these engines into his huge flying machine testrig, which needed a wing span of 104 ft (31.7 m) to generate enough lift to overcome a total weight of 4 tons. The machine was not designed for free flight, but ran on one set of rails with a second set to prevent it rising more than about 2 ft (61 cm). At Baldwyn's Park in Kent on 31 July 1894 the huge machine, carrying Maxim and his crew, reached a speed of 42 mph (67.6 km/h) and lifted off its rails. Unfortunately, one of the restraining axles broke and the machine was extensively damaged. Although it was subsequently repaired and further trials carried out, these experiments were very expensive. Maxim eventually abandoned the flying machine and did not develop his idea for a stabilizer, turning instead to other projects. At the age of almost 70 he returned to the problems of flight and designed a biplane with a petrol engine: it was built in 1910 but never left the ground.In all, Maxim registered 122 US and 149 British patents on objects ranging from mousetraps to automatic spindles. Included among them was a 1901 patent for a foot-operated suction cleaner. In 1900 he became a British subject and he was knighted the following year. He remained a larger-than-life figure, both physically and in character, until the end of his life.[br]Principal Honours and DistinctionsChevalier de la Légion d'Honneur 1881. Knighted 1901.Bibliography1908, Natural and Artificial Flight, London. 1915, My Life, London: Methuen (autobiography).Further ReadingObituary, 1916, Engineer (1 December).Obituary, 1916, Engineering (1 December).P.F.Mottelay, 1920, The Life and Work of Sir Hiram Maxim, London and New York: John Lane.Dictionary of National Biography, 1912–1921, 1927, Oxford: Oxford University Press.See also: Pilcher, Percy SinclairCM / JDSBiographical history of technology > Maxim, Sir Hiram Stevens
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16 Senefelder, Alois
SUBJECT AREA: Paper and printing[br]b. 6 November 1771 Prague, Bohemia (now Czech Republic)d. 26 February 1834 Munich, Germany[br]German inventor of lithography.[br]Soon after his birth, Senefelder's family moved to Mannheim, where his father, an actor, had obtained a position in the state theatre. He was educated there, until he gained a scholarship to the university of Ingolstadt. The young Senefelder wanted to follow his father on to the stage, but the latter insisted that he study law. He nevertheless found time to write short pieces for the theatre. One of these, when he was 18 years old, was an encouraging success. When his father died in 1791, he gave up his studies and took to a new life as poet and actor. However, the wandering life of a repertory actor palled after two years and he settled for the more comfortable pursuit of playwriting. He had some of his work printed, which acquainted him with the art of printing, but he fell out with his bookseller. He therefore resolved to carry out his own printing, but he could not afford the equipment of a conventional letterpress printer. He began to explore other ways of printing and so set out on the path that was to lead to an entirely new method.He tried writing in reverse on a copper plate with some acid-resisting material and etching the plate, to leave a relief image that could then be inked and printed. He knew that oily substances would resist acid, but it required many experiments to arrive at a composition of wax, soap and charcoal dust dissolved in rainwater. The plates wore down with repeated polishing, so he substituted stone plates. He continued to etch them and managed to make good prints with them, but he went on to make the surprising discovery that etching was unnecessary. If the image to be printed was made with the oily composition and the stone moistened, he found that only the oily image received the ink while the moistened part rejected it. The printing surface was neither raised (as in letterpress printing) nor incised (as in intaglio printing): Senefelder had discovered the third method of printing.He arrived at a workable process over the years 1796 to 1799, and in 1800 he was granted an English patent. In the same year, lithography (or "writing on stone") was introduced into France and Senefelder himself took it to England, but it was some time before it became widespread; it was taken up by artists especially for high-quality printing of art works. Meanwhile, Senefelder improved his techniques, finding that other materials, even paper, could be used in place of stone. In fact, zinc plates were widely used from the 1820s, but the name "lithography" stuck. Although he won world renown and was honoured by most of the crowned heads of Europe, he never became rich because he dissipated his profits through restless experimenting.With the later application of the offset principle, initiated by Barclay, lithography has become the most widely used method of printing.[br]Bibliography1911, Alois Senefelder, Inventor of Lithography, trans. J.W.Muller, New York: Fuchs \& Line (Senefelder's autobiography).Further ReadingW.Weber, 1981, Alois Senefelder, Erfinder der Lithographie, Frankfurt-am-Main: Polygraph Verlag.M.Tyman, 1970, Lithography 1800–1950, London: Oxford University Press (describes the invention and its development; with biographical details).LRD -
17 Sperry, Elmer Ambrose
[br]b. 21 October 1860 Cincinnatus, Cortland County, New York, USAd. 16 June 1930 Brooklyn, New York, USA[br]American entrepreneur who invented the gyrocompass.[br]Sperry was born into a farming community in Cortland County. He received a rudimentary education at the local school, but an interest in mechanical devices was aroused by the agricultural machinery he saw around him. His attendance at the Normal School in Cortland provided a useful theoretical background to his practical knowledge. He emerged in 1880 with an urge to pursue invention in electrical engineering, then a new and growing branch of technology. Within two years he was able to patent and demonstrate his arc lighting system, complete with its own generator, incorporating new methods of regulating its output. The Sperry Electric Light, Motor and Car Brake Company was set up to make and market the system, but it was difficult to keep pace with electric-lighting developments such as the incandescent lamp and alternating current, and the company ceased in 1887 and was replaced by the Sperry Electric Company, which itself was taken over by the General Electric Company.In the 1890s Sperry made useful inventions in electric mining machinery and then in electric street-or tramcars, with his patent electric brake and control system. The patents for the brake were important enough to be bought by General Electric. From 1894 to 1900 he was manufacturing electric motor cars of his own design, and in 1900 he set up a laboratory in Washington, where he pursued various electrochemical processes.In 1896 he began to work on the practical application of the principle of the gyroscope, where Sperry achieved his most notable inventions, the first of which was the gyrostabilizer for ships. The relatively narrow-hulled steamship rolled badly in heavy seas and in 1904 Ernst Otto Schuck, a German naval engineer, and Louis Brennan in England began experiments to correct this; their work stimulated Sperry to develop his own device. In 1908 he patented the active gyrostabilizer, which acted to correct a ship's roll as soon as it started. Three years later the US Navy agreed to try it on a destroyer, the USS Worden. The successful trials of the following year led to widespread adoption. Meanwhile, in 1910, Sperry set up the Sperry Gyroscope Company to extend the application to commercial shipping.At the same time, Sperry was working to apply the gyroscope principle to the ship's compass. The magnetic compass had worked well in wooden ships, but iron hulls and electrical machinery confused it. The great powers' race to build up their navies instigated an urgent search for a solution. In Germany, Anschütz-Kämpfe (1872–1931) in 1903 tested a form of gyrocompass and was encouraged by the authorities to demonstrate the device on the German flagship, the Deutschland. Its success led Sperry to develop his own version: fortunately for him, the US Navy preferred a home-grown product to a German one and gave Sperry all the backing he needed. A successful trial on a destroyer led to widespread acceptance in the US Navy, and Sperry was soon receiving orders from the British Admiralty and the Russian Navy.In the rapidly developing field of aeronautics, automatic stabilization was becoming an urgent need. In 1912 Sperry began work on a gyrostabilizer for aircraft. Two years later he was able to stage a spectacular demonstration of such a device at an air show near Paris.Sperry continued research, development and promotion in military and aviation technology almost to the last. In 1926 he sold the Sperry Gyroscope Company to enable him to devote more time to invention.[br]Principal Honours and DistinctionsJohn Fritz Medal 1927. President, American Society of Mechanical Engineers 1928.BibliographySperry filed over 400 patents, of which two can be singled out: 1908. US patent no. 434,048 (ship gyroscope); 1909. US patent no. 519,533 (ship gyrocompass set).Further ReadingT.P.Hughes, 1971, Elmer Sperry, Inventor and Engineer, Baltimore: Johns Hopkins University Press (a full and well-documented biography, with lists of his patents and published writings).LRD -
18 Tizard, Sir Henry Thoms
SUBJECT AREA: Weapons and armour[br]b. 23 August 1885 Gillingham, Kent, Englandd. 9 October 1959 Fareham, Hampshire, England[br]English scientist and administrator who made many contributions to military technology.[br]Educated at Westminster College, in 1904 Tizard went to Magdalen College, Oxford, gaining Firsts in mathematics and chemistry. After a period of time in Berlin with Nernst, he joined the Royal Institution in 1909 to study the colour changes of indicators. From 1911 until 1914 he was a tutorial Fellow of Oriel College, Oxford, but with the outbreak of the First World War he joined first the Royal Garrison Artillery, then, in 1915, the newly formed Royal Flying Corps, to work on the development of bomb-sights. Successively in charge of testing aircraft, a lieutenant-colonel in the Ministry of Munitions and Assistant Controller of Research and Experiments for the Royal Air Force, he returned to Oxford in 1919 and the following year became Reader in Chemical Thermodynamics; at this stage he developed the use of toluene as an air-craft-fuel additive.In 1922 he was appointed an assistant secretary at the government Department of Industrial and Scientific Research, becoming Principal Assistant Secretary in 1922 and its Permanent Director in 1927; during this time he was also a member of the Aeronautical Research Committee, being Chairman of the latter in 1933–43. From 1929 to 1942 he was Rector of Imperial College. In 1932 he was also appointed Chairman of a committee set up to investigate possible national air-defence systems, and it was largely due to his efforts that the radar proposals of Watson-Watt were taken up and an effective system made operational before the outbreak of the Second World War. He was also involved in various other government activities aimed at applying technology to the war effort, including the dam-buster and atomic bombs.President of Magdalen College in 1942–7, he then returned again to Whitehall, serving as Chairman of the Advisory Council on Scientific Policy and of the Defence Research Policy Committee. Finally, in 1952, he became Pro-Chan-cellor of Southampton University.[br]Principal Honours and DistinctionsAir Force Cross 1918. CB 1927. KCB 1937. GCB 1949. American Medal of Merit 1947. FRS 1926. Ten British and Commonwealth University honorary doctorates. Hon. Fellowship of the Royal Aeronautical Society. Royal Society of Arts Gold Medal. Franklin Institute Gold Medal. President, British Association 1948. Trustee of the British Museum 1937–59.Bibliography1911, The sensitiveness of indicators', British Association Report (describes Tizard's work on colour changes in indicators).Further Reading1961, Biographical Memoirs of Fellows of the Royal Society VII, London: Royal Society.KFBiographical history of technology > Tizard, Sir Henry Thoms
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