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1 винт для передачи усилия
тормозное усилие; мощность торможения — brake power
звено, передающее усилие — power transmission medium
Русско-английский военно-политический словарь > винт для передачи усилия
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2 тяговое усилие
[lang name="Russian"]тормозное усилие; мощность торможения — brake power
[lang name="Russian"]звено, передающее усилие — power transmission medium
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3 равномерная передача усилия
Mechanics: even transmission of power, smooth transfer of powerУниверсальный русско-английский словарь > равномерная передача усилия
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4 равномерная передача усилия
smooth transfer of power, even transmission of powerРусско-английский исловарь по машиностроению и автоматизации производства > равномерная передача усилия
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5 poder
m.1 power (mando, competencia).estar en/hacerse con el poder to be in/to seize powerpoder adquisitivo purchasing powerpoder calorífico calorific valuepoder de convicción persuasive powerstener poder de convocatoria to be a crowd-pullerel poder ejecutivo/legislativo/judicial the executive/legislature/judiciary (personas)poderes fácticos the church, military and presspoderes públicos public authoritiesEl poder corrompe a los indecisos Power corrupts the undecided.2 power, authorization.dar poderes a alguien para que haga algo to authorize somebody to do somethingpor poderes by proxypoder notarial power of attorney3 faculty.4 proxy, letter of delegation, power of attorney, letter of attorney.Ella se casó usando un poder She married using a proxy.v.1 can, to be able to.no puedo decírtelo I can't tell you, I'm unable to tell you2 can, may (tener permiso).no puedo salir por la noche I'm not allowed to o I can't go out at night¿puedo fumar aquí? may I smoke here?¿se puede? may I come in?3 can (ser capaz moralmente).no podemos portarnos así con él we can't treat him like that4 may, can (tener posibilidad, ser posible).puede estallar la guerra war could o may break outpodías haber ido en tren you could have gone by train¡podría habernos invitado! she could o might have invited us! (expresa enfado)puede que llueva it may o might rain¿vendrás mañana? — puede will you come tomorrow? — I may dopuede ser perhaps, maybe5 to be stronger than.tú eres más alto, pero yo te puedo you may be taller than me, but I could still beat you up6 to can, to may, to be able to, to be apt to.Ella puede correr She is able to run.7 to might, to stand to.Ella podría surgir She might rise above.8 to be capable.* * *Present IndicativePast IndicativeFuture IndicativeConditionalPresent SubjunctiveImperfect SubjunctiveFuture SubjunctiveImperative* * *1. verb1) can2) to be able3) may2. noun m.1) power2) control3) possession4) strength, force* * *1. VERBO AUXILIAR1) (=tener la posibilidad o capacidad de)puedo hacerlo solo — I can do it on my own o by myself
¿se puede llamar por teléfono desde aquí? — can you phone from here?
no puede venir — he can't o cannot come
no ha podido venir — he couldn't come, he was unable to come
2) (=tener permiso para)puedes irte — you can o may go
¿puedo usar tu teléfono? — can o may I use your phone?
¿puedo abrir la ventana? — can o may I open the window?
aquí no se puede fumar — you aren't allowed to smoke here, you can't smoke here
3) [en peticiones]¿puedes/puede darme un vaso de agua? — can I/may I have a glass of water please?
¿me puede usted decir cuándo sale el autobús? — can o could you tell me when the bus leaves?
4) [indicando eventualidad]puede o podría estar en cualquier sitio — it could o might be anywhere
¡cuidado, te puedes hacer daño! — careful, you could o might hurt yourself!
podías haberte roto una pierna — you could o might have broken your leg
5) [indicando obligación moral]¡no pueden tratarnos así! — they can't treat us like this!
6) [en cálculos, aproximaciones]¿qué edad puede tener? — I wonder what age he is?, how old do you reckon he is?
7) [en sugerencias]8) [en reproches]¡podías habérmelo dicho! — you could o might have told me!
habría podido ser más amable — she could o might have been a bit nicer
¡al menos podrías disculparte! — you could at least say sorry!
2. VERBO INTRANSITIVO1) (=tener la posibilidad o capacidad)¡no puedo más! — (=estoy agotado) I can't go on!; (=estoy desesperado) I can't cope any more!; (=he comido mucho) I can't eat another thing!
2) (=tener permiso)¿se puede? — may I come in?
¿puedo? — may I?
3) (=tener dominio, influencia)los que pueden — those who can, those who are able
el dinero puede mucho — money can do almost anything, money talks
poder conpoder a algn: yo le puedo — I'm a match for him; [entre niños] I could have him *
¿puedes con la maleta? — can you manage the suitcase?
no puedo con él — (=no puedo controlarle) I can't handle him; (=pesa mucho) he's too heavy for me
4) [en locuciones]•
a más no poder, es tonto a más no poder — he's as stupid as they come•
no poder por menos que, no pude por menos que decirle lo que pensaba de él — I just had to tell him what I thought of himsu actitud me pudo — his attitude annoyed me o got on my nerves
3.VERBO IMPERSONALpuede (ser) (=es posible) maybe, it may be so, perhapspuede (ser) que ({+ subjun}9})¡no puede ser! — that can't be!, that's impossible!
puede (ser) que esté en la biblioteca — he could o may be in the library, perhaps he's in the library
puede (ser) que tenga uno ya — he may o might have one already
puede (ser) que no venga — he may o might not come
puede (ser) que tenga razón — she may o could be right
4. SUSTANTIVO MASCULINO1) (=capacidad, facultad) powerpoder de convocatoria, tienen un gran poder de convocatoria — they really pull in the crowds, they're real crowd-pullers *
2) (=autoridad, influencia) powerejercen un poder enorme sobre la juventud — they have a lot of power o influence over young people
no tienen poder para oponerse a estas medidas — they are not powerful enough to oppose these measures
3) (Pol)¡el pueblo al poder! — power to the people!
¡Herrera al poder! — Herrera for leader!
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bajo el poder de algn, estar en el poder, ocupar el poder — to be in power•
el cuarto poder — the fourth estate4) (=fuerza, eficacia)este medicamento no tiene poder contra la tuberculosis — this drug is ineffective o isn't effective against tuberculosis
5) (=potestad)pl poderes powersles dieron amplios poderes para dirigir la empresa — they were given wide-ranging powers to run the company
tiene plenos poderes para intervenir en el asunto — he has full authority to intervene in the matter
6) (Jur)7) (=posesión) possessionesa información está u obra en poder de la juez — that information is in the hands of the judge, that information is in the judge's possession
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pasar a poder de algn — to pass to sb, pass into sb's possession8) (Fís, Mec) power9) LAm (=persona) drug pusher* * *Iverbo auxiliar¿cuándo podrá darme una respuesta? — when will you be able to o when can you give me an answer?
no pudo asistir a la reunión — he was unable to o he couldn't attend the meeting
¿pudiste hacerlo sola? — were you able to do it on your own?
¿puedo servirme otro? — can o may I have another one?
¿le puedo hacer una sugerencia? — may I make a suggestion?
¿podría irme un poco más temprano hoy? — could I leave a little earlier today?
¿se puede? - adelante! — may I? - come in
3) ( expresando derecho moral)4)a) (en quejas, reproches)¿cómo pudiste hacer una cosa así? — how could you do such a thing?
podías or podrías haberme avisado — you could o might have warned me!
b) ( en sugerencias)c) ( solicitando un favor)¿puedes bajar un momento? — can you come down for a moment?
¿podrías hacerme un favor? — could you do me a favor?
poder con algo/alguien: ¿puedes con todo eso? can you manage all that?; no puedo con esta maleta I can't manage this suitcase; no pudo con el alemán y lo dejó he couldn't get to grips with German and he gave up; con este niño no hay quien pueda! this child is just impossible!; podérsela con algo — (Chi fam) to cope with something
6) (en locs)a más no poder: comió a más no poder he ate until he was fit to burst; corrimos a más no poder we ran as fast as we could; es feo a más no poder he's as ugly as they come; no poder más: estoy que no puedo más ( cansado) I'm exhausted; ( lleno) I can't eat anything else; ya no puedo más con este niño I'm at the end of my tether with this child; ya no puedo más, me está desquiciando I can't go on like this, it's driving me mad; no poder (por) menos que: no pude menos que sentirme halagado I couldn't help feeling flattered; no pudo menos que reconocer — she had no alternative but to admit
7) (fam) (+ me, te, le etc)a) ( ganar)él es más alto, pero tú le puedes — he's taller than you but you can beat him
b) (Méx) ( doler)8) (con idea de eventualidad, posibilidad)te podrías or podías haber matado — you could have killed yourself!
9) (en 3a pers)no puede ser que no lo sepa — he must know
no puede ser que ya haya terminado — he can't have finished already
si puede ser or (Esp) a poder ser — if possible
puede (ser) que tengas razón — you may o could be right
II- puede que sí, puede que no — maybe, maybe not
1)a) (control, influencia) powertiene mucho poder en el pueblo — he has a great deal of power o influence in the village
estamos/nos tiene en su poder — we are/she has us in her power
caer en poder de alguien — ciudad/país to fall to somebody
b) (Pol)tomar el poder — to take o seize power
detenta el poder desde hace 20 años — (frml) he has held power for 20 years
2) ( posesión)la carta está en poder de... — the letter is in the hands of...
obra en su poder la copia del acta — (frml) you have in your possession a copy of the minutes
3)a) (derecho, atribución)tener amplios/plenos poderes para hacer algo — to have wide-ranging powers/full authority to do something
b) (Der) ( documento) letter of authorization; ( hecho ante notario) power of attorneycasarse por poder (AmL) or (Esp) por poderes — to get married by proxy
4)a) (capacidad, facultad) powerb) (de motor, aparato) power•* * *Iverbo auxiliar¿cuándo podrá darme una respuesta? — when will you be able to o when can you give me an answer?
no pudo asistir a la reunión — he was unable to o he couldn't attend the meeting
¿pudiste hacerlo sola? — were you able to do it on your own?
¿puedo servirme otro? — can o may I have another one?
¿le puedo hacer una sugerencia? — may I make a suggestion?
¿podría irme un poco más temprano hoy? — could I leave a little earlier today?
¿se puede? - adelante! — may I? - come in
3) ( expresando derecho moral)4)a) (en quejas, reproches)¿cómo pudiste hacer una cosa así? — how could you do such a thing?
podías or podrías haberme avisado — you could o might have warned me!
b) ( en sugerencias)c) ( solicitando un favor)¿puedes bajar un momento? — can you come down for a moment?
¿podrías hacerme un favor? — could you do me a favor?
poder con algo/alguien: ¿puedes con todo eso? can you manage all that?; no puedo con esta maleta I can't manage this suitcase; no pudo con el alemán y lo dejó he couldn't get to grips with German and he gave up; con este niño no hay quien pueda! this child is just impossible!; podérsela con algo — (Chi fam) to cope with something
6) (en locs)a más no poder: comió a más no poder he ate until he was fit to burst; corrimos a más no poder we ran as fast as we could; es feo a más no poder he's as ugly as they come; no poder más: estoy que no puedo más ( cansado) I'm exhausted; ( lleno) I can't eat anything else; ya no puedo más con este niño I'm at the end of my tether with this child; ya no puedo más, me está desquiciando I can't go on like this, it's driving me mad; no poder (por) menos que: no pude menos que sentirme halagado I couldn't help feeling flattered; no pudo menos que reconocer — she had no alternative but to admit
7) (fam) (+ me, te, le etc)a) ( ganar)él es más alto, pero tú le puedes — he's taller than you but you can beat him
b) (Méx) ( doler)8) (con idea de eventualidad, posibilidad)te podrías or podías haber matado — you could have killed yourself!
9) (en 3a pers)no puede ser que no lo sepa — he must know
no puede ser que ya haya terminado — he can't have finished already
si puede ser or (Esp) a poder ser — if possible
puede (ser) que tengas razón — you may o could be right
II- puede que sí, puede que no — maybe, maybe not
1)a) (control, influencia) powertiene mucho poder en el pueblo — he has a great deal of power o influence in the village
estamos/nos tiene en su poder — we are/she has us in her power
caer en poder de alguien — ciudad/país to fall to somebody
b) (Pol)tomar el poder — to take o seize power
detenta el poder desde hace 20 años — (frml) he has held power for 20 years
2) ( posesión)la carta está en poder de... — the letter is in the hands of...
obra en su poder la copia del acta — (frml) you have in your possession a copy of the minutes
3)a) (derecho, atribución)tener amplios/plenos poderes para hacer algo — to have wide-ranging powers/full authority to do something
b) (Der) ( documento) letter of authorization; ( hecho ante notario) power of attorneycasarse por poder (AmL) or (Esp) por poderes — to get married by proxy
4)a) (capacidad, facultad) powerb) (de motor, aparato) power•* * *poder11 = force, strength, power, leverage, authority, clout, might, muscle power, power of attorney, sway.Ex: Her reason admitted the force of his arguments, but her instinct opposed it.
Ex: The strength of the acetone rinsing on the strength of the paper is investigated, and its efficiency in removing NM2P is also examined using gas liquid chromatography.Ex: She added that she felt sorry for the assistant because he had so little power.Ex: At certain times, dubious interpretations of the rules have even been used as leverage in gaining ground on matters of dispute between Community partners.Ex: One of the great virtues of networking is that it democratizes access to information and access to authority.Ex: IT executives would like to see their role in the organization elevated, giving them more ' clout', stature and visibility.Ex: Gradually many of these conquerors came to realize that, although military might was necessary to gain control over an area, sheer force of arms was not sufficient to govern effectively.Ex: Their development, particularly for replacing human muscle power, has been in parallel with that of information technology, but largely independent of it.Ex: A power of attorney is a legal instrument that is used to delegate legal authority to another.Ex: During this period Africa was influenced by external forces as the Islamic states of the north extended their sway south.* abusar del poder = lord over, lord it over.* abuso de poder = abuse of power.* altas esferas del poder, las = echelons of power, the.* ansioso de poder = power-hungry.* asumir poder = assume + power.* ceder las riendas del poder = hand over + the reins of power.* círculo de poder = circle of power.* con ansias de poder = power-hungry.* conceder poderes = give + powers.* con hambre de poder = power-hungry.* con poder = powerful.* con sed de poder = power-hungry.* control del poder = hold on power.* dar poderes = give + powers.* dejar sin poder = disempower.* división de poderes = division of powers.* ejercer poder = wield + power, exercise + power.* en el poder = in office.* equilibrio de poder = balance of power.* estructura de poder = power structure.* frecuentar los pasillos del poder = stalk + the corridors of power.* gente de poder = wielders of power, powerful people.* gobierno en el poder = ruling government.* grupo de poder = power group.* hambriento de poder = power-hungry.* igualdad de poder = parity of power.* inversión de poderes = power reversal.* jerarquía de poder = scalar chain.* llevar al poder = bring + Nombre + to power.* los poderes fáticos = the powers-that-be.* los que detentan el poder = the powers-that-be.* lucha de poderes = power struggle.* lucha por el poder = power struggle.* luchar de poderes = battle of wills.* partido en el poder, el = ruling party, the.* pasar las riendas del poder a = hand + the reins over to.* pasillos del poder, los = corridors of power, the.* perder poder = lose + power.* pérdida de poder = disempowerment.* poder adquisitivo = spending power, purchasing power, buying power.* poder colectivo = collective power.* poder curativo = healing power.* poder de atracción = drawing power.* poder de curación = healing power.* poder de discriminación = discretion.* poder de enganche = holding power.* poder del estado = state power.* poder de negociación = bargaining power.* poder de representación = power of representation.* poder de retención = holding power.* poder divino = divine power.* poder económico = economic leverage.* poder ejecutivo = chief executive, executive arm, executive power.* poder ejecutivo, el = Executive, the.* poder estatal = state power.* poder imperial = imperial power.* poder judicial = judicial arm, judicial system.* poder judicial, el = judiciary, the.* poder legal = statutory power.* poder legislativo = legislative power, legislative arm.* poder mágico = magical power, magic power.* poder notarial = power of attorney.* poder político = political power.* poder presidencial = presidential power.* poder público = public power, public authority.* poder remunerativo = earning power, earning capacity.* poder sobrenatural = supernatural power.* política del poder = power politics.* por poderes = by proxy.* posición de poder = position power.* quitar el poder = disempower.* relación de poder = power relationship.* relaciones de poder = power relations.* sediento de poder = power-hungry.* subida al poder = seizure of power.* subir al poder = rise to + power.* tener el poder = be the boss, call + the shots, call + the tune, rule + the roost.* tener el poder de = have + the power to.* tener las riendas del poder = hold + the reins of power.* tomar el poder = take + power.* tomar las riendas del poder = take + the reins of power.poder22 = be able to, be capable of, can, have + the opportunity, may, qualify for, manage to.Ex: Thus the electronic journal (e-journal) is a concept where scientists are able to input ideas and text to a computer data base for their colleagues to view, and similarly to view the work of others.
Ex: Main classes are thus only capable of precise definition in the contexts of particular classification schemes.Ex: When used by skilled abstractors this mixture of styles can achieve the maximum transmission of information, within a minimum length.Ex: Every librarian, regardless of his government's policy, has the opportunity, if he has the courage, to open the avenues of books and ideas a little wider.Ex: My second point may be a slightly tangential, but I hope it is a concrete reaction to the general tenor of Mr. Lubetzky's remarks and the general subject posed.Ex: FIAC has drawn up a list of criteria to determine whether an advice centre qualifies for membership of the Federation.Ex: Tom Hernandez tried not to show how sad he felt about his friends' leaving, and managed to keep up a cheerful facade until the party broke up.* Algo por lo que se puede cobrar = billable.* al que no se puede dejar de faltar = unmissable.* como mejor + poder = as best + Pronombre + can.* cuando antes pueda = at + Posesivo + earliest convenience.* de modo que + poder + oír = within earshot of.* en el que se puede buscar = searchable.* estar tan bueno que no se puede dejar de comer = moreish, moreish.* hacerlo lo mejor que Uno pueda = do + Posesivo + utmost.* hacer lo mejor que Uno pueda = put + Posesivo + best into.* hacer lo mejor que Uno puede = try + Posesivo + heart out.* hacer todo lo que Uno pueda = do + Posesivo + best, do + the best + Nombre + may, do + the best + Nombre + can.* hacer todo lo que Uno pueda (dado) = do + the best possible (with).* lo suficientemente lejos como para no poder oír = out of earshot.* muy bien + podría + Verbo = might + well + Verbo.* muy bien + puede + Verbo = may well + Verbo.* nada puede estar más apartado de la realidad = nothing can be further from the truth.* noche sin poder dormir = sleepless night.* no poder = be unable to, cannot, can't [cannot].* no poder aguantar a Alguien = have + it in for + Nombre.* no poder conciliar el sueño = have + trouble sleeping.* no poder dejar de mencionar = cannot but notice.* no poder dejar de recalcar la importancia de Algo = the importance of + Nombre + cannot be stressed too strongly, cannot + give + too much emphasis + to the importance of.* no poder dormir = sleeplessness.* no poder estarse quieto = have + the fidgets, fidget.* no poder evitar + Infinitivo = cannot help + Gerundio, cannot help but + Verbo.* no poder evitar mencionar = cannot but notice.* no poder hacer más que = do + little more than.* no poder permitirse = ill afford.* no poder permitirse el lujo de = ill afford.* no poder quitarse Algo de la cabeza = can't get it out of my mind.* no poderse buscar = be unsearchable.* no poderse negar que = there + be + no denying that.* no poder ver a Alguien = have + it in for + Nombre.* no poder ver Algo o Alguien = can't stand + sight.* no pude evitar notar que = couldn't help but notice (that).* no puedo aguantarlo = can't take it.* no puedo comprender = I can't get over.* No se le puede pedir peras al olmo = You can't make a silk purse out of a sow's ear.* no se puede dejar de recalcar el + Nombre + de = the + Nombre + of + Nombre + cannot be overemphasised.* no se puede dejar de recalcar el + Nombre + of = the + Nombre + of + Nombre + cannot be overstated.* no se puede dejar de recalcar la importancia de Algo = the importance of + Nombre + cannot be overemphasised, the importance of + Nombre + cannot be overstated.* personas que no pueden salir de casa = homebound, the.* poder contar con = be there for + Pronombre, be there for + Pronombre.* poder + Infinitivo = succeed in + Gerundio.* poderse afirmar que = it + be + safe to say that.* poderse contestar = be answerable.* poderse integrar en = be integrable in.* poderse localizar = be locatable.* poder utilizarse = be usable.* por el que se puede cobrar = chargeable.* puede muy bien ser = could well be.* puede muy bien ser que = it may well be that.* puede que = maybe.* puede que al final sea para bien = be a blessing in disguise.* ¿Puede repetir? = I beg your pardon?, I beg your pardon?.* que no se le puede dar un nombre = unnameable.* que no se puede conseguir = unobtainable.* que no se puede entregar = undeliverable.* que no se puede hacer cumplir = unenforceable.* que no se puede identificar con un término = unnameable.* que no se puede uno perder = unmissable.* que puede causar detención = arrestable.* que puede demostrarse = demonstrably.* que puede salir en préstamo = loanable.* que puede ser apilado = stacking.* que puede ser usado a través de la web = web-compliant.* querer es poder = where there's a will there's a way.* que se le puede dar un nombre = nameable.* que se puede arreglar = fixable.* que se puede buscar = searchable.* que se puede cambiar de tamaño = resizeable [re-sizeable].* que se puede escuchar = playable.* que se puede hacer cumplir = enforceable.* que se puede identificar con un término = nameable.* que se puede imprimir = printable.* que se puede quitar = detachable.* que se puede separar = detachable.* que se puede visualizar = viewable.* sálvese el que pueda = free-for-all.* sálvese quien pueda = the devil take the hindmost, every man for himself, let battle commence.* se puede = is to be.* siempre que uno puede dedicarle el tiempo = in + Posesivo + own time.* sin poder contenerse = helplessly.* sin poder dormir = sleepless.* sin poder extinguirlo = inextinguishably.* sin poder hacer nada = helplessly.* tan sorprendente como pueda parecer = as amazing as it seems.* todavía + poderse + escuchar los ecos de = echo + still resound from.* * *A tener la capacidad deB expresando idea de permisoC expresando un derecho moralD1 en quejas, reproches2 en sugerencias3 solicitando un favorA1 poder con algo/alguien2 el dinero lo puede todoB en locucionesC1 vencer, ganar2 dolerA con idea de eventualidadB en tercera personaA(tener la capacidad o posibilidad de): ven en cuanto puedas come as soon as you canno puedo pagar tanto I can't pay that much¿cómo que no puedes? what do you mean, you can't do it ( o you can't come etc)?no podía dejar de reír I couldn't stop laughingno va a poder venir he won't be able to come¿cuándo podrá darme una respuesta definitiva? when will you be able to o when can you give me a firm answer?no pude convencerla I couldn't persuade herno pudo asistir a la reunión he was unable to o he couldn't attend the meeting¿pudiste hacerlo sola? did you manage to do it o were you able to do it on your own?hicimos todo lo que pudimos por ayudarlos we did everything in our power o everything we could to help themno se puede valer por sí mismo he can't manage by himselfno habría podido hacerlo sin tu ayuda I wouldn't have been able to do it o I couldn't have done it without your helpno debe (de) haber podido encontrarlo she obviously couldn't find it o can't have found it¡este niño no se puede estar quieto ni un minuto! this child just won't o can't keep still for a minute!con aquel ruido no se podía trabajar it was impossible to work o you couldn't work with that noise going on¿sabes que se han prometido? — ¡no te (lo) puedo creer! do you know they're engaged? — you're joking! o I don't believe it!B(expresando idea de permiso): ¿puedo servirme otro? can o may I have another one?ya pueden volver la hoja you may turn the page over now¿me puedo ir? — ¡no señor! can o may I go? — no, you cannot o may not!¿sales a jugar? — no puedo, estoy castigada are you coming out to play? — I can't, I'm being kept in¿puedo pasar? may I come in?¿le puedo hacer una sugerencia? may I make a suggestion?¿podría irme un poco más temprano hoy? could I leave a little earlier today?por mí, puedes hacer lo que quieras as far as I'm concerned, you can do whatever you likeno puede comer sal he isn't allowed to eat salt¿quién te lo dijo, si se puede saber? who told you, may I ask?¿se puede? — ¡adelante! may I? — come inaquí no se puede fumar smoking is not allowed here, you can't smoke hereC(expresando un derecho moral): no podemos hacerle eso we can't do that to herdespués de lo que has trabajado, bien puedes tomarte un descanso you're entitled to o you deserve a rest after all the work you've donees lo menos que puedes hacer it's the least you can doD1(en quejas, reproches): ¿cómo pudiste hacer una cosa así? how could you do such a thing?¿cómo puedes ser tan ingrato? how can you be so ungrateful?podías or podrías haberme avisado you could o might have warned me!2(en sugerencias): podrías or podías pedírselo tú, a ti siempre te hace caso why don't you ask him? he always listens to youya te puedes ir haciendo a la idea you'd better start getting used to the idea3(solicitando un favor): ¿puedes bajar un momento? can you come down for a moment?¿podrías hacerme un favor? could you do me a favor?¿no puedes irte a jugar a otra parte? can't you go and play somewhere else?A1 poder CON algo/algn:¿tú puedes con todo eso? can you manage all that?no puedo con esta maleta I can't manage this suitcaseyo no puedo solo con la casa, los niños y la tienda I can't do the housework, look after the children and run the store all on my own, I can't cope with the house, the children and the store all on my ownno pudo con el alemán y lo dejó he couldn't get o come to grips with German and he gave up¡con este niño no hay quien pueda! this child is just impossible!no se la puede con el trabajo he can't cope with the job o manage the job2el dinero lo puede todo money talks, you can do anything if you have moneyB ( en locuciones):a más no poder: comió a más no poder he ate until he was fit to burstgana dinero a más no poder she's making pots of money ( colloq), she's making money hand over fistes feo a más no poder he's as ugly as they comecorrimos a más no poder we ran for all we were worth o as fast as we couldno poder más: estoy que no puedo más (de cansancio) I'm exhausteda mí no me des postre que ya no puedo más don't serve me any dessert, I can't eat anything elseya no puedo más con este niño I'm at the end of my tether with this childno podía más, y ese estúpido que no salía del cuarto de baño I was desperate o I was bursting to go and that idiot wouldn't come out of the bathroom ( colloq)ya no puedo más, me está desquiciando I can't go on like this, it's driving me madno poder (por) menos que: uno no puede menos que sentirse halagado one can't help feeling flatteredno puedo menos que expresar mi profunda decepción I feel I must say how deeply disappointed I amno pudo menos que reconocer que teníamos razón she had no alternative but to admit that we were rightC1 ( fam)(vencer, ganar): él es más alto pero tú le puedes he's taller than you but you can beat himtu papá no le puede al mío your dad's not as strong as minea gracioso no hay quien le pueda as a comic, there's no-one to beat him o he's unbeatable2( Méx fam) (doler): tu desprecio le puede mucho she's very hurt by your disdainful attitude, your disdainful attitude hurts her deeplynos pudo mucho la muerte de Julio we were greatly saddened o terribly upset by Julio's deathA(con idea de eventualidad, posibilidad): puede aparecer en cualquier momento he may turn up at any momentde él se puede esperar cualquier cosa anything's possible with himno sé dónde lo puedo haber puesto I don't know where I can have put itno hagas nada que pueda resultar sospechoso don't do anything that might look suspiciouspuede haber venido mientras no estábamos he may have come while we were outhace horas que están reunidos ¿de qué pueden estar hablando? they've been in that meeting for hours, what can they be talking about?te podrías or podías haber matado you could have killed yourself!un error así puede costar millones a mistake like that could cost millionsno podía haber estado más amable she couldn't have been kinderllaman a la puerta — ¿quién podrá ser a estas horas? there's someone at the door — who can o could it be at this time?podría volver a ocurrir it could happen againPilar no pudo haber sido it couldn't have been PilarB ( en tercera persona):¿nos habrá mentido? — no sé, puede ser do you think he lied to us? — I don't know, he may have done o it's possibleno puede ser que no lo sepa he must knowno puede ser que ya haya terminado he can't have finished alreadysi puede ser or ( Esp) a poder ser preferiría la cuarta fila if possible, I'd prefer row fourme habría gustado verlo pero no pudo ser I would have liked to see him but it wasn't possible o it wasn't to bepuede (ser) que tengas razón you may o could be rightpuede (ser) que no nos haya visto he may not have seen us¿vas a votar para ella? — puede que sí or puede are you going to vote for her? — maybe o I may¿lo vas a aceptar? — puede que sí, puede que no are you going to accept it? — maybe, maybe notA1 (control, influencia) powerel poder de la prensa the power of the presstiene mucho poder en el pueblo he has a great deal of power o influence o he is a very powerful man in the villagela Familia Real no tiene ningún poder the Royal Family has no powerConstantinopla cayó en poder de los turcos Constantinople fell to the Turksestamos/nos tiene en su poder we are/she has us in her power2 ( Pol):el poder powerestar en el poder to be in powertomar el poder to take o seize powerasumir el poder to assume powerdetenta el poder desde hace 20 años ( frml); he has held power for 20 yearslleva cuatro años en el poder he has been in power for four yearstoda la vida buscó el poder y la gloria all her life she sought power and fameel poder en la sombra the power behind the throneel poder corrompe power corruptsB(posesión): la carta está en poder de las autoridades the letter is in the hands of the authoritieshay que evitar que llegue a su poder we have to stop it falling into his handsobra en su poder la copia del acta ( frml); you have in your possession a copy of the minutesla solicitud ya pasó a poder de la oficina central the application has already been passed to our head officeC1(derecho, atribución): tiene amplios/plenos poderes para investigar el asunto he has wide-ranging powers/full authority to investigate the matterla entrega or transmisión de poderes the handing over o transmission of powerlos poderes de la junta son ilimitados the junta has unlimited powerslos poderes que le han sido conferidos the powers which have been vested in himla separación de poderes entre la Iglesia y el Estado the division o separation of power between the Church and the StateD1 (capacidad, facultad) powersu poder de convicción or de persuasión her power of persuasionel poder del amor/de la sugestión the power of love/of suggestiontiene poderes extrasensoriales he has extrasensory powers2 (de un motor, aparato) powerCompuestos:masculine absolute powermasculine (de una divisa, un sueldo) purchasing power, buying power; (de una persona, un grupo) purchasing power, spending powermasculine divine powerel poder ejecutivo the executivempl power of attorneympl:los poderes públicos the authoritiesel poder judicial the judiciaryel poder legislativo the legislature* * *
poder 1 ( conjugate poder) v aux
1 ( tener la capacidad o posibilidad de):
no puedo pagar tanto I can't pay that much;
no podía dormir I couldn't sleep;
no va a poder venir he won't be able to come;
no pudo asistir he was unable to o he couldn't attend;
¿pudiste hacerlo sola? were you able to do it on your own?
2a) ( expresando idea de permiso):◊ ¿puedo servirme otro? can o may I have another one?;
¿podría irme más temprano hoy? could I leave earlier today?;
puedes hacer lo que quieras you can do whatever you like;
no puede comer sal he isn't allowed to eat salt;
¿se puede? — ¡adelante! may I? — come in;
aquí no se puede fumar smoking is not allowed hereb) ( solicitando un favor):◊ ¿puedes bajar un momento? can you come down for a moment?;
¿podrías hacerme un favor? could you do me a favor?
3 ( expresando derecho moral):
4 (en quejas, reproches): podías or podrías haberme avisado you could o might have warned me!
( con idea de esfuerzo)
1 poder con algo/algn:◊ ¿puedes con todo eso? can you manage all that?;
no puedo con este niño I can't cope with this child;
estoy que no puedo más ( cansado) I'm exhausted;
( lleno) I can't eat anything else;
2 (con idea de eventualidad, posibilidad): te podrías or podías haber matado you could have killed yourself!;
podría volver a ocurrir it could happen again;
no pudo ser it wasn't possible;
puede (ser) que tengas razón you may o could be right;
puede que sí, puede que no maybe, maybe not
3 (Méx) ( doler):
poder 2 sustantivo masculino
1
estamos en su poder we are in her powerb) (Pol)
estar en el poder to be in power;
tomar el poder to take o seize power
2 ( posesión):◊ la carta está en poder de … the letter is in the hands of …
3
( hecho ante notario) power of attorney;
casarse por poder (AmL) or (Esp) por poderes to get married by proxy
4
poder adquisitivo purchasing power
poder 1 sustantivo masculino power
Jur por poderes, by proxy
Econ poder adquisitivo, purchasing power
poder 2
I verbo transitivo
1 (tener capacidad) to be able to, can: no puedo evitarlo, I can't help it
podías habernos avisado, you could/ might have warned us
2 (tener derecho o autorización) may, might, can
¿puedo repetir?, may I have a second helping?
no puede tomar carne de cerdo, he can't eat pork
las mujeres ya pueden votar, women can already vote
3 (uso impers) may, might: puede que la vea luego, I might see her later
puede que sí, puede que no, maybe, maybe not
II verbo intransitivo
1 to cope [con, with]: no puedo con todo, I can't cope
2 (vencer, tener más fuerza) to be stronger than
En el presente, can y to be able to son sinónimos. Sin embargo, en el pasado could significa que podías hacer algo, mientras que was o were able to significa que, además de poder hacerlo, lo hiciste: I could tell him the truth. Podía decirle la verdad (no sabemos si lo hice). I was able to tell him the truth. Fui capaz de decirle la verdad (lo hice). En el futuro solo podemos emplear to be able to: I will be able to do it tomorrow. Podré hacerlo mañana.
Para expresar posibilidad puedes usar may, could o might. La diferencia consiste en el grado de probabilidad que sugieren. Recuerda que may se refiere a hechos más probables que might o could: Puede que llueva mañana. It may rain tomorrow (crees que es posible). It might/ could rain tomorrow (crees que la posibilidad es más remota).
' poder' also found in these entries:
Spanish:
absoluta
- absoluto
- abusar
- abuso
- adquisitiva
- adquisitivo
- ámbito
- caber
- CGPJ
- concentrar
- continuismo
- desgaste
- desperdicio
- destronar
- desvelarse
- dominio
- entregar
- erótica
- excedente
- garra
- grabar
- grandeza
- idea
- informal
- judicial
- legislativa
- legislativo
- manifestarse
- mano
- obrar
- parcela
- remediar
- respirar
- sátrapa
- sed
- seducción
- someterse
- sugestión
- usurpar
- ver
- acumular
- anhelar
- ansia
- ansiar
- atribuir
- autoridad
- ávido
- ceder
- clavar
- confiar
English:
able
- abuse
- afford
- anything
- assume
- assumption
- can
- conform
- cope
- encroach
- fold
- form
- foursome
- get
- glad
- greed
- greediness
- greedy
- handle
- hungry
- lust
- make
- manage
- may
- might
- office
- out
- power
- power of attorney
- proxy
- purchasing power
- seize
- seizure
- spending power
- stick
- stranglehold
- take aside
- takeover
- unable
- use
- utmost
- whichever
- zenith
- could
- executive
- height
- helplessly
- judiciary
- lie
- peace
* * *poder1 nm1. [mando, autoridad] power;la gente con más poder en la organización the most powerful people in the organization;estar en el poder to be in power;perder el poder to lose power;el poder corrompe power corrupts;la separación de poderes the separation of powers;de poder a poder: un enfrentamiento de poder a poder a heavyweight contest;el partido se disputó de poder a poder it was a close contest between two excellent sidespoder absoluto absolute power;el poder ejecutivo [el gobierno] the executive;los poderes fácticos the centres of power in society;el poder judicial [los jueces] the judiciary;el poder legislativo [las cortes] the legislature;poderes públicos (public) authoritiesobra en su poder un documento comprometedor she has in her possession a compromising document;tienen en su poder a varios rehenes they have taken a number of hostages;el pueblo cayó en poder del enemigo the town fell to the enemy;la casa pasó a poder del banco ownership of the house was transferred to the bank3. [capacidad] power;un producto con gran poder de limpieza a very powerful cleaning product;tener poderes (paranormales) to be psychic, to have psychic powerspoder adquisitivo [de salario] purchasing o buying power; [de persona] disposable income;poder calorífico calorific value;poder de convicción persuasive powers;poder de convocatoria: [m5] tener poder de convocatoria to be a crowd-puller;Mil poder de disuasión deterrent force; Mil poder disuasorio deterrent force4. [autorización] power, authorization;[documento] power of attorney;dar poderes a alguien para que haga algo to authorize sb to do sth;tener plenos poderes para hacer algo to be fully authorized to do sth;por poderes by proxy;poder notarial power of attorney [witnessed by a notary]♦ vi1. [tener facultad, capacidad] can, to be able to;no puedo decírtelo I can't tell you, I'm unable to tell you;ahora mismo no podemos atenderle, llame más tarde we can't o we are unable to take your call right now, please call later;¿puede correrse un poco, por favor? could you move up a bit, please?;al final pudo salir de allí in the end she managed to get out of there;¡así no se puede hacer nada! we'll never get anywhere like this!;de poder ir, sería a partir de las siete if I manage to o can make it, it will be after seven;en cuanto pueda as soon as possible;si puedo, te llamaré I'll call you if I get the chance2. [tener permiso] can, may;no puedo salir por la noche I'm not allowed to o I can't go out at night;¿podríamos ir contigo? could we go with you?;¿podría hablar un momento con usted? could I have a word with you?;¿se pueden hacer fotos? can we o are we allowed to take photos?;¿puedo fumar aquí? may o can I smoke here?;no se puede fumar you're not allowed to smoke;¿se puede? may I come in?;¿se puede saber dónde te habías metido? might I know o would you mind telling me where you were?3. [ser capaz moralmente] can;no podemos portarnos así con él we can't treat him like that;¿cómo puedes decir una cosa así? how can you say such a thing?4. [tener posibilidad, ser posible] may, can;puede volver de un momento a otro she could come back any moment;puedo haberlo perdido I may have lost it;podías haber cogido el tren you could have caught the train;puede estallar la guerra war could o may break out;¡habría podido invitarnos!, ¡podría habernos invitado! [expresa enfado] she could o might have invited us!;[tarea, problema] to be able to cope with;¿puedes con todas las bolsas? can you manage all those bags?;no puedo con este baúl, ¿me ayudas a levantarlo? I can't lift this trunk on my own, can you give me a hand?;no poder con algo/alguien [no soportar] not to be able to stand sth/sb;no puedo con la hipocresía I can't stand hypocrisy;¡contigo no hay quien pueda! you're impossible!es avaro a más no poder he's as miserly as can be;llovía a más no poder it was absolutely pouring down;la pierna me dolía a más no poder you can't imagine how much my leg was hurting;no poder más [estar cansado] to be too tired to carry on;[estar harto de comer] to be full (up); [estar enfadado, harto] to have had enough;no pude por menos que reírme I had to laugh, I couldn't help but laugh;Fam¡ya podrás, con una máquina como esa! anyone could do it with a machine like that!;no puedo con mi alma I'm ready to drop♦ v impersonal[ser posible] may;puede que llueva it may o might rain;puede que se haya equivocado she may be wrong;¿vendrás mañana? – puede will you come tomorrow? – I may do;puede que sí o puede que no maybe, maybe not;puede ser perhaps, maybe;si puede ser, a poder ser if (at all) possible;lo siento, pero no va a poder ser I'm sorry, but it's not going to be possible;puede ser que no lo sepa she may not know;¡no puede ser que sea ya tan tarde! surely it can't be that late already!♦ vt1. [ser más fuerte que] to be stronger than;tú eres más alto, pero yo te puedo you may be taller than me, but I could still beat you up;mi coche le puede al tuyo my car is faster than yours any dayle pudo su derrota, todavía no se repone losing really got to her, she still hasn't got over it* * *I v/aux1 capacidad can, be able to;no pude hablar con ella I wasn’t able to talk to her2 permiso can, be allowed to;¿puedo ir contigo? can o may I come with you?3 posibilidad may, might;¡podías habérselo dicho! you could have o you might have told himII v/i:me puede he can beat me;es franco a más no poder fam he’s as frank as they come fam ;comimos a más no poder fam we ate to bursting point fam ;no puedo más I can’t take any more, I’ve had enough;a poder ser if possible;puede ser perhaps, maybe;¡no puede ser! it can’t be!, that can’t be right!;puede que perhaps, maybe;puede ser que no lo sepa maybe o perhaps he doesn’t know;¿se puede? can I come in?, do you mind if I come in?;no pude menos de insultarle insulting him was the least I could doen poder de alguien in s.o.’s hands;plenos poderes pl full authority sg ;por poderes, L.Am.los poder es públicos the authorities* * *poder {58} v aux1) : to be able to, canno puede hablar: he can't speakpuede llover: it may rain at any moment¿cómo puede ser?: how can that be?¿puedo ir a la fiesta?: can I go to the party?¿se puede?: may I come in?poder vi1) : to beat, to defeatcree que le puede a cualquiera: he thinks he can beat anyone2) : to be possible¿crees que vendrán? - puede (que sí): do you think they'll come? - maybe3)poder con : to cope with, to manage¡no puedo con estos niños!: I can't handle these children!4)no poder más : to have had enoughno puede más: she can't take anymore5)no poder menos que : to not be able to helpno pudo menos que asombrarse: she couldn't help but be amazedpoder nm1) : control, powerpoder adquisitivo: purchasing power2) : authorityel poder legislativo: the legislature3) : possessionestá en mi poder: it's in my hands4) : strength, forcepoder militar: military might* * *poder1 n (en general) powerpoder2 vb1. (capacidad, posibilidad) can / could / to be able to¿puedo echarte una mano? can I give you a hand?¿qué podemos comprarle? what can we buy her?¿cuándo podrás venir? when will you be able to come?2. (permiso) can / may¿puedo hablar con el jefe? can I speak to the boss?¿se puede pasar? can I come in?3. (probabilidad) may / could / mightpuede que venga, puede que no he might come, he might notpoder con to manage / to cope with -
6 Trevithick, Richard
[br]b. 13 April 1771 Illogan, Cornwall, Englandd. 22 April 1833 Dartford, Kent, England[br]English engineer, pioneer of non-condensing steam-engines; designed and built the first locomotives.[br]Trevithick's father was a tin-mine manager, and Trevithick himself, after limited formal education, developed his immense engineering talent among local mining machinery and steam-engines and found employment as a mining engineer. Tall, strong and high-spirited, he was the eternal optimist.About 1797 it occurred to him that the separate condenser patent of James Watt could be avoided by employing "strong steam", that is steam at pressures substantially greater than atmospheric, to drive steam-engines: after use, steam could be exhausted to the atmosphere and the condenser eliminated. His first winding engine on this principle came into use in 1799, and subsequently such engines were widely used. To produce high-pressure steam, a stronger boiler was needed than the boilers then in use, in which the pressure vessel was mounted upon masonry above the fire: Trevithick designed the cylindrical boiler, with furnace tube within, from which the Cornish and later the Lancashire boilers evolved.Simultaneously he realized that high-pressure steam enabled a compact steam-engine/boiler unit to be built: typically, the Trevithick engine comprised a cylindrical boiler with return firetube, and a cylinder recessed into the boiler. No beam intervened between connecting rod and crank. A master patent was taken out.Such an engine was well suited to driving vehicles. Trevithick built his first steam-carriage in 1801, but after a few days' use it overturned on a rough Cornish road and was damaged beyond repair by fire. Nevertheless, it had been the first self-propelled vehicle successfully to carry passengers. His second steam-carriage was driven about the streets of London in 1803, even more successfully; however, it aroused no commercial interest. Meanwhile the Coalbrookdale Company had started to build a locomotive incorporating a Trevithick engine for its tramroads, though little is known of the outcome; however, Samuel Homfray's ironworks at Penydarren, South Wales, was already building engines to Trevithick's design, and in 1804 Trevithick built one there as a locomotive for the Penydarren Tramroad. In this, and in the London steam-carriage, exhaust steam was turned up the chimney to draw the fire. On 21 February the locomotive hauled five wagons with 10 tons of iron and seventy men for 9 miles (14 km): it was the first successful railway locomotive.Again, there was no commercial interest, although Trevithick now had nearly fifty stationary engines completed or being built to his design under licence. He experimented with one to power a barge on the Severn and used one to power a dredger on the Thames. He became Engineer to a project to drive a tunnel beneath the Thames at Rotherhithe and was only narrowly defeated, by quicksands. Trevithick then set up, in 1808, a circular tramroad track in London and upon it demonstrated to the admission-fee-paying public the locomotive Catch me who can, built to his design by John Hazledine and J.U. Rastrick.In 1809, by which date Trevithick had sold all his interest in the steam-engine patent, he and Robert Dickinson, in partnership, obtained a patent for iron tanks to hold liquid cargo in ships, replacing the wooden casks then used, and started to manufacture them. In 1810, however, he was taken seriously ill with typhus for six months and had to return to Cornwall, and early in 1811 the partners were bankrupt; Trevithick was discharged from bankruptcy only in 1814.In the meantime he continued as a steam engineer and produced a single-acting steam engine in which the cut-off could be varied to work the engine expansively by way of a three-way cock actuated by a cam. Then, in 1813, Trevithick was approached by a representative of a company set up to drain the rich but flooded silver-mines at Cerro de Pasco, Peru, at an altitude of 14,000 ft (4,300 m). Low-pressure steam engines, dependent largely upon atmospheric pressure, would not work at such an altitude, but Trevithick's high-pressure engines would. Nine engines and much other mining plant were built by Hazledine and Rastrick and despatched to Peru in 1814, and Trevithick himself followed two years later. However, the war of independence was taking place in Peru, then a Spanish colony, and no sooner had Trevithick, after immense difficulties, put everything in order at the mines then rebels arrived and broke up the machinery, for they saw the mines as a source of supply for the Spanish forces. It was only after innumerable further adventures, during which he encountered and was assisted financially by Robert Stephenson, that Trevithick eventually arrived home in Cornwall in 1827, penniless.He petitioned Parliament for a grant in recognition of his improvements to steam-engines and boilers, without success. He was as inventive as ever though: he proposed a hydraulic power transmission system; he was consulted over steam engines for land drainage in Holland; and he suggested a 1,000 ft (305 m) high tower of gilded cast iron to commemorate the Reform Act of 1832. While working on steam propulsion of ships in 1833, he caught pneumonia, from which he died.[br]BibliographyTrevithick took out fourteen patents, solely or in partnership, of which the most important are: 1802, Construction of Steam Engines, British patent no. 2,599. 1808, Stowing Ships' Cargoes, British patent no. 3,172.Further ReadingH.W.Dickinson and A.Titley, 1934, Richard Trevithick. The Engineer and the Man, Cambridge; F.Trevithick, 1872, Life of Richard Trevithick, London (these two are the principal biographies).E.A.Forward, 1952, "Links in the history of the locomotive", The Engineer (22 February), 226 (considers the case for the Coalbrookdale locomotive of 1802).See also: Blenkinsop, JohnPJGR -
7 Burgi, Jost
SUBJECT AREA: Horology[br]b. 28 February 1552 Lichtensteig, Switzerlandd. 31 January 1632 Kassel, Germany[br]Swiss clockmaker and mathematician who invented the remontoire and the cross-beat escapement, also responsible for the use of exponential notation and the calculation of tables of anti-logarithms.[br]Burgi entered the service of Duke William IV of Hesse in 1579 as Court Clockmaker, although he also assisted William with his astronomical observations. In 1584 he invented the cross-beat escapement which increased the accuracy of spring-driven clocks by two orders of magnitude. During the last years of the century he also worked on the development of geometrical and astronomical instruments for the Royal Observatory at Kassel.On the death of Duke Wilhelm in 1603, and with news of his skills having reached the Holy Roman Emperor Rudolph II, in 1604 he went to Prague to become Imperial Watchmaker and to assist in the creation of a centre of scientific activity, subsequently becoming Assistant to the German astronomer, Johannes Kepler. No doubt this association led to an interest in mathematics and he made significant contributions to the concept of decimal fractions and the use of exponential notation, i.e. the use of a raised number to indicate powers of another number. It is likely that he was developing the idea of logarithms at the same time (or possibly even before) Napier, for in 1620 he made his greatest contribution to mathematics, science and, eventually, engineering, namely the publication of tables of anti-logarithms.At Prague he continued the series of accurate clocks and instruments for astronomical measurements that he had begun to produce at Kassel. At that period clocks were very poor timekeepers since the controller, the foliot or balance, had no natural period of oscillation and was consequently dependent on the driving force. Although the force of the driving weight was constant, irregularities occurred during the transmission of the power through the train as a result of the poor shape and quality of the gearing. Burgi attempted to overcome this directly by superb craftsmanship and indirectly by using a remontoire. This device was wound at regular intervals by the main driving force and fed the power directly to the escape wheel, which impulsed the foliot. He also introduced the crossbeat escapement (a variation on the verge), which consisted of two coupled foliots that swung in opposition to each other. According to contemporary evidence his clocks produced a remarkable improvement in timekeeping, being accurate to within a minute a day. This improvement was probably a result of the use of a remontoire and the high quality of the workmanship rather than a result of the cross-beat escapement, which did not have a natural period of oscillation.Burgi or Prague clocks, as they were known, were produced by very few other makers and were supplanted shortly afterwards by the intro-duction of the pendulum clock. Burgi also produced superb clockwork-driven celestial globes.[br]Principal Honours and DistinctionsEnnobled 1611.BibliographyBurgi only published one book, and that was concerned with mathematics.Further ReadingL.von Mackensen, 1979, Die erste Sternwarte Europas mit ihren Instrumenten and Uhren—400 Jahre Jost Burgi in Kassel, Munich.K.Maurice and O.Mayr (eds), 1980, The Clockwork Universe, Washington, DC, pp. 87– 102.H.A.Lloyd, 1958, Some Outstanding Clocks Over 700 Years, 1250–1950, London. E.T.Bell, 1937, Men of Mathematics, London: Victor Gollancz.See also: Briggs, HenryKF / DV -
8 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 -
9 Leonardo da Vinci
[br]b. 15 April 1452 Vinci, near Florence, Italy,d. 2 May 1519 St Cloux, near Amboise, France.[br]Italian scientist, engineer, inventor and artist.[br]Leonardo was the illegitimate son of a Florentine lawyer. His first sixteen years were spent with the lawyer's family in the rural surroundings of Vinci, which aroused in him a lifelong love of nature and an insatiable curiosity in it. He received little formal education but extended his knowledge through private reading. That gave him only a smattering of Latin, a deficiency that was to be a hindrance throughout his active life. At sixteen he was apprenticed in the studio of Andrea del Verrochio in Florence, where he received a training not only in art but in a wide variety of crafts and technical arts.In 1482 Leonardo went to Milan, where he sought and obtained employment with Ludovico Sforza, later Duke of Milan, partly to sculpt a massive equestrian statue of Ludovico but the work never progressed beyond the full-scale model stage. He did, however, complete the painting which became known as the Virgin of the Rocks and in 1497 his greatest artistic achievement, The Last Supper, commissioned jointly by Ludovico and the friars of Santa Maria della Grazie and painted on the wall of the monastery's refectory. Leonardo was responsible for the court pageants and also devised a system of irrigation to supply water to the plains of Lombardy. In 1499 the French army entered Milan and deposed Leonardo's employer. Leonardo departed and, after a brief visit to Mantua, returned to Florence, where for a time he was employed as architect and engineer to Cesare Borgia, Duke of Romagna. Around 1504 he completed another celebrated work, the Mona Lisa.In 1506 Leonardo began his second sojourn in Milan, this time in the service of King Louis XII of France, who appointed him "painter and engineer". In 1513 Leonardo left for Rome in the company of his pupil Francesco Melzi, but his time there was unproductive and he found himself out of touch with the younger artists active there, Michelangelo above all. In 1516 he accepted with relief an invitation from King François I of France to reside at the small château of St Cloux in the royal domain of Amboise. With the pension granted by François, Leonardo lived out his remaining years in tranquility at St Cloux.Leonardo's career can hardly be regarded as a success or worthy of such a towering genius. For centuries he was known only for the handful of artistic works that he managed to complete and have survived more or less intact. His main activity remained hidden until the nineteenth and twentieth centuries, during which the contents of his notebooks were gradually revealed. It became evident that Leonardo was one of the greatest scientific investigators and inventors in the history of civilization. Throughout his working life he extended a searching curiosity over an extraordinarily wide range of subjects. The notes show careful investigation of questions of mechanical and civil engineering, such as power transmission by means of pulleys and also a form of chain belting. The notebooks record many devices, such as machines for grinding and polishing lenses, a lathe operated by treadle-crank, a rolling mill with conical rollers and a spinning machine with pinion and yard divider. Leonardo made an exhaustive study of the flight of birds, with a view to designing a flying machine, which obsessed him for many years.Leonardo recorded his observations and conclusions, together with many ingenious inventions, on thousands of pages of manuscript notes, sketches and drawings. There are occasional indications that he had in mind the publication of portions of the notes in a coherent form, but he never diverted his energy into putting them in order; instead, he went on making notes. As a result, Leonardo's impact on the development of science and technology was virtually nil. Even if his notebooks had been copied and circulated, there were daunting impediments to their understanding. Leonardo was left-handed and wrote in mirror-writing: that is, in reverse from right to left. He also used his own abbreviations and no punctuation.At his death Leonardo bequeathed his entire output of notes to his friend and companion Francesco Melzi, who kept them safe until his own death in 1570. Melzi left the collection in turn to his son Orazio, whose lack of interest in the arts and sciences resulted in a sad period of dispersal which endangered their survival, but in 1636 the bulk of them, in thirteen volumes, were assembled and donated to the Ambrosian Library in Milan. These include a large volume of notes and drawings compiled from the various portions of the notebooks and is now known as the Codex Atlanticus. There they stayed, forgotten and ignored, until 1796, when Napoleon's marauding army overran Italy and art and literary works, including the thirteen volumes of Leonardo's notebooks, were pillaged and taken to Paris. After the war in 1815, the French government agreed to return them but only the Codex Atlanticus found its way back to Milan; the rest remained in Paris. The appendix to one notebook, dealing with the flight of birds, was later regarded as of sufficient importance to stand on its own. Four small collections reached Britain at various times during the seventeenth and eighteenth centuries; of these, the volume in the Royal Collection at Windsor Castle is notable for its magnificent series of anatomical drawings. Other collections include the Codex Leicester and Codex Arundel in the British Museum in London, and the Madrid Codices in Spain.Towards the end of the nineteenth century, Leonardo's true stature as scientist, engineer and inventor began to emerge, particularly with the publication of transcriptions and translations of his notebooks. The volumes in Paris appeared in 1881–97 and the Codex Atlanticus was published in Milan between 1894 and 1904.[br]Principal Honours and Distinctions"Premier peintre, architecte et mécanicien du Roi" to King François I of France, 1516.Further ReadingE.MacCurdy, 1939, The Notebooks of Leonardo da Vinci, 2 vols, London; 2nd edn, 1956, London (the most extensive selection of the notes, with an English translation).G.Vasari (trans. G.Bull), 1965, Lives of the Artists, London: Penguin, pp. 255–271.C.Gibbs-Smith, 1978, The Inventions of Leonardo da Vinci, Oxford: Phaidon. L.H.Heydenreich, Dibner and L. Reti, 1981, Leonardo the Inventor, London: Hutchinson.I.B.Hart, 1961, The World of Leonardo da Vinci, London: Macdonald.LRD / IMcN
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