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wireless method

  • 1 способ определения долготы с помощью радиосигналов времени

    Cartography: wireless method

    Универсальный русско-английский словарь > способ определения долготы с помощью радиосигналов времени

  • 2 sin

    prep.
    without.
    buscan gente sin experiencia previa they are looking for people with no o without previous experience
    sin alcohol alcohol-free
    ha escrito cinco libros sin (contar) las novelas he has written five books, not counting his novels
    está sin hacer it hasn't been done yet
    estamos sin vino we're out of wine
    muchos se quedaron sin casa a lot of people were left homeless, a lot of people lost their homes
    lleva tres noches sin dormir she hasn't slept for three nights
    sin que without
    sin que nadie se enterara without anyone noticing
    sin más (ni más) just like that
    m.
    INS, Immigration and Naturalization Service.
    * * *
    1 (carencia) without
    2 (además de) not counting
    \
    estar sin algo to be out of something
    estar sin + inf not to have been + past participle
    quedarse sin algo to run out of something
    seguir sin to still not
    sin casar unmarried
    sin lo cual otherwise
    sin más ni más without further ado
    sin que + subjuntivo without + - ing
    sin querer accidentally, by mistake
    sin vergüenza shameless
    * * *
    prep.
    * * *
    1. PREP
    1) [seguido de sustantivo, pronombre] without

    ¿puedes abrirla sin llave? — can you open it without a key?

    llevamos diez meses sin noticias — it's been ten months since we've had any news, we've been ten months without news

    parejas jóvenes, sin hijos — young couples with no children

    cerveza sin alcohol — alcohol-free beer, non-alcoholic beer

    • estar sin algo, estuvimos varias horas sin luz — we had no electricity for several hours

    • quedarse sin algo — (=terminarse) to run out of sth; (=perder) to lose sth

    sin papeles — SMF illegal immigrant

    2) (=no incluyendo) not including, excluding

    ese es el precio de la bañera sin los grifos — that is the price of the bath, excluding o not including the taps

    cuesta 550 euros, sin IVA — it costs 550 euros, exclusive of VAT o not including VAT

    3) + infin
    a) [indicando acción]

    nos despedimos, no sin antes recordarles que... — (TV) before saying goodnight we'd like to remind you that...

    no me gusta estar sin hacer nada — I don't like having nothing to do, I don't like doing nothing

    b) [indicando continuidad]

    • llevan mucho tiempo sin hablarse — they haven't spoken to each other for a long time

    • seguir sin, las camas seguían sin hacer — the beds still hadn't been made

    c) [tras sustantivo pasivo]
    4)

    • sin que — + subjun without

    sin que él lo sepa — without him knowing, without his knowing

    2.
    SF (=cerveza sin alcohol) alcohol-free beer
    * * *

    cerveza sin alcohol — non-alcoholic beer, alcohol-free beer

    una pareja sin hijos — a couple with no children, a childless couple

    2)
    a)

    sin + inf — ( con significado activo) without -ing

    b)

    sin + inf — ( con significado pasivo)

    3)

    sin que + subj: no voy a ir sin que me inviten I'm not going if I haven't been invited; quítaselo sin que se dé cuenta — get it off him without his o without him noticing

    * * *
    Ex. Without AACR is doubtful whether computerised cataloguing would have been implemented so relatively painlessly and successfully = Sin las RCAA es dudoso que la catalogación automatizada se hubiera implementado tan fácilmente y con tanto éxito, relativamente hablando.
    ----
    * abogado sin escrúpulos = shyster.
    * acercarse sin ser visto = sidle up to.
    * afable pero sin sinceridad = suave.
    * agua sin gas = still water.
    * andar sin prisa = mosey.
    * arreglárselas sin = live without, get along without.
    * aunque sin ningún resultado = but (all) to no avail.
    * barato pero sin avergonzarse de ello = cheap and cheerful.
    * biblioteca sin muros = library without walls.
    * biblioteca sin paredes = library without walls.
    * bordado sin consido = needlepoint lace.
    * callejón sin salida = blind alley, catch 22, cul-de-sac, dead end, impasse.
    * camino sin rumbo = the road to nowhere.
    * casi sin previo aviso = without much notice.
    * coche sin caballos = horseless carriage automobile, horseless carriage.
    * colocado sin escalón entre pieza y pieza = edge-flush.
    * continuar sin detenerse = go straight ahead.
    * conversación sin trascendencia = small-talk.
    * decir rápidamente sin parar = rattle off.
    * dejar a Alguien sin aliento = leave + Nombre + breathless.
    * dejar sin cambiar = leave + unchanged.
    * dejar sin hacer = leave + undone.
    * dejar sin referente a una referencia anafórica = dangle + anaphoric reference.
    * dejar sin tocar = leave + Nombre + alone.
    * dejar sin trabajo = put + Nombre + out of work.
    * demanda sin variaciones = inelastic demand.
    * demostrar sin lugar a dudas = prove + conclusively.
    * demostrar sin ninguna duda = demonstrate + beyond any doubt, prove + beyond any doubt, prove + beyond all doubt.
    * demostrar sin ningún género de duda = demonstrate + beyond (all) doubt, demonstrate + emphatically, demonstrate + beyond any doubt, prove + beyond any doubt, prove + beyond any doubt.
    * desarrollarse sin problemas = go + smoothly.
    * estar sin vivir = be worried sick.
    * evaluación sin intervención del examinador = unobtrusive testing.
    * hablando sin rodeos = crudely put.
    * hablar sin parar = burble on.
    * hablar sin ser entendido = speak in + tongues.
    * hacerlo sin la ayuda de nadie = do + it + on + Posesivo + own.
    * homicidio sin premeditación = manslaughter.
    * ir a un Sitio sin prisa = mosey.
    * lanzarse sin ton ni son = dive + head-first.
    * más largo que un día sin pan = as long as (my/your) arm.
    * medicamento sin receta médica = over the counter medicine.
    * método de la media sin ponderar = unweighted means method.
    * nación sin estado = stateless nation.
    * noche sin poder dormir = sleepless night.
    * no hay dos sin tres = things + come in threes.
    * no miel sin hiel = no pain, no gain.
    * no sin fundamento = not without basis.
    * oficina sin papel = paperless office.
    * papel sin acidez = acid-free paper.
    * pasar desadvertido, pasar sin ser visto = sneak under + the radar.
    * pasar sin = live without, live without.
    * pasar sin ser visto = go + unnoticed.
    * película sin fin = filmloop [film loop/film-loop].
    * permanecer sin cambios = remain + unchanged.
    * permanecer sin especificar = remain + undefined.
    * pero sin conseguirlo = but no dice.
    * pero sin suerte = but no dice.
    * persona sin problemas de vista = sighted person.
    * personas sin hogar = homelessness.
    * personas sin techo = homelessness.
    * político sin escrúpulos = shyster.
    * pozo sin fondo = bottomless pit.
    * pregunta sin respuesta = unanswerable question.
    * publicación sin papel = paperless publishing.
    * quedarse sin aliento = run out of + breath.
    * quedarse sin habla = stun into + speechlessness.
    * quedarse sin negocio = go out of + business.
    * quedarse sin palabras = stun into + speechlessness.
    * rechazar sin más = dismiss + out of hand.
    * referencia anafórica sin referente = dangling anaphoric reference.
    * rima sin sentido = nonsense, nonsense verse.
    * salir sin ser visto = slip out.
    * sin abrir = unopened.
    * sin abrirse = unfolded.
    * sin abrochar = undone.
    * sin acabar = unfinished.
    * sin acentuar = unaccented.
    * sin acontecimientos que destacar = uneventful.
    * sin adornos = unadorned, unvarnished.
    * sin afectar = unaffected.
    * sin afeitar = unshaven.
    * sin afeitar desde hace varios días = stubbly [stubblier -comp., stubbliest -sup.].
    * sin afiliación a un partido político = non-partisan [nonpartisan].
    * sin afiliación religiosa = non-sectarian [nonsectarian].
    * sin agua = waterless.
    * sin aguja = needleless.
    * sin ajustar = unadjusted, loosely hanging, baggy [baggier -comp., baggiest -sup.], saggy [saggier -comp., saggiest -sup.].
    * sin alcohol = alcoholfree.
    * sin aliento = breathlessly, breathless.
    * sin alinear = unjustified.
    * sin alterar = unaltered, unmodified.
    * sin ambigüedad = unambiguous.
    * sin amor = loveless.
    * sin analizar = unexamined, unanalysed.
    * sin ánimo = despondently.
    * sin ánimo de lucro = non-profit [nonprofit], non-profit making, not-for-profit, generously.
    * sin apenas ser oído = as quiet as a mouse.
    * sin apoyo = unsupported.
    * sin apretar = loosely hanging, baggy [baggier -comp., baggiest -sup.], saggy [saggier -comp., saggiest -sup.].
    * sin árboles = treeless.
    * sin arreglo = beyond repair.
    * sin arrepentimiento = no-looking-back.
    * sin asignar = unallocated.
    * sin asignar todavía = unassigned.
    * sin asimilar = undigested.
    * sin atajar = unconfronted.
    * sin atractivo = unattractive.
    * sin atrasos = paid-up, in good standing.
    * sin autorización = unauthorised [unauthorized, -USA], unlicensed.
    * sin avergonzarse = unashamed.
    * sin avisar = unannounced, out of the blue, like a bolt out of the blue, like a bolt from the blue.
    * sin aviso previo = without warning.
    * sin ayuda = unaided, unassisted.
    * sin ayuda de nadie = all by + Reflexivo, by + Reflexivo.
    * sin barba = beardless.
    * sin barnizar = unvarnished.
    * sin base = unsupported, ill-founded.
    * sin blanca = broke, skint.
    * sin blanquear = unbleached.
    * sin blindar = unshielded.
    * sin bombo(s) ni platillo(s) = without much ado.
    * sin brillo = dull, tarnished.
    * sin cabeza = headless, decapitated.
    * sin cables = wireless.
    * sin cafeina = decaffeinated.
    * sin calorías = calorieless.
    * sin cambio = inviolate.
    * sin cambios = monotone, stable, undisturbed, unchanged, unmodified, unaltered, unedited.
    * sin cancelar = uncancelled.
    * sin canjear = unredeemed.
    * sin cansancio = indefatigably.
    * sin capacidad de discernimiento = undiscriminating.
    * sin cara = faceless.
    * sin carácter = boneless, spineless.
    * sin carne = meatless.
    * sin castigo = impunitive, unpunished.
    * sin catalogar = uncatalogued [uncataloged, -USA].
    * sin causa alguna = for no reason, for no specific reason, for no particular reason, for no good reason.
    * sin causa aparente = for no apparent reason, for apparently no reason.
    * sin causa justificada = without justified reason.
    * sin causar daño = harmlessly.
    * sin ceremonias = unceremonious, unceremoniously.
    * sin cerrar con llave = unlocked.
    * sin certeza de cobrar = on spec.
    * sin cesar = steadily.
    * sin clases sociales = classless.
    * sin clavos = studless.
    * sin clemencia = mercilessly.
    * sin cobrar = free of charge, unredeemed, uncollected.
    * sin cohesión = scrappily, scrappy [scrappier -comp., scrappiest -sup.], bitty [bittier -comp., bittiest -sup.].
    * sin cohibiciones = unselfconsciously.
    * sin cola = ecaudate.
    * sin columnas = single-column.
    * sin comentar = unannotated.
    * sin comerlo ni beberlo = without having anything to do with it.
    * sin comérselo ni bebérselo = without having anything to do with it.
    * sin compasión = mercilessly.
    * sin complicaciones = smoothly, boilerplate [boiler plate], uncomplicated, straightforward, uncomplicatedly, hassle-free.
    * sin comprimir = uncompressed.
    * sin comprobar = untested.
    * sin compromiso = without obligation, fancy-free.
    * sin compromisos = with no strings attached.
    * sin concluir = unfinished.
    * sin concretar = to be decided.
    * sin condiciones = unconditionally.
    * sin condiciones especiales = with no strings attached.
    * sin confirmar = unconfirmed, unsubstantiated, unvalidated, to be confirmed.
    * sin conocer = ignorant of.
    * sin conocimiento = unconscious.
    * sin conocimiento de causa = unbeknown to, unbeknownst to.
    * sin conservar información sobre las consultas realizadas anteriormente = stateless.
    * sin conservar información sobre las consultas realizadas anterior = stateless.
    * sin constancia de ello = unrecorded.
    * sin consumir = nonconsumptive.
    * sin contacto = non-contact.
    * sin contaminar = untainted, uncontaminated.
    * sin contar = not including, excluding.
    * sin contar con = in the absence of.
    * sin contenido = contentless, trivial.
    * sin contratiempos = smoothly.
    * sin control = uncontrolled.
    * sin controlar = unsupervised.
    * sin convicción = doubtfully, lamely.
    * sin coordinación = uncoordinated [unco-ordinated].
    * sin corregir = unamended, uncorrected, unrevised.
    * sin correlacionar = uncorrelated.
    * sin corroborar = unsubstantiated.
    * sin cortapisas = untrammelled.
    * sin cortar = uncut.
    * sin coscarse = without batting an eyelid, without turning a hair.
    * sin costas = land-bound [landbound], land-locked [landlocked].
    * sin coste alguno = at no personal cost, at no cost, without cost, costless, without charge, free of charge, free of cost, cost free, for free, at no charge.
    * sin costo adicional alguno = at no extra charge, at no extra cost, at no extra charge.
    * sin costuras = seamless.
    * sin crecimiento = non-growth.
    * sin créditos = non-credit.
    * sin criterio alguno = indiscriminate, indiscriminately.
    * sin cuajar = runny [runnier -comp., runniest -sup.].
    * sin cuantificar = unmeasured.
    * sin cubrir = unfilled.
    * sin cuestionarlo = uncritically.
    * sin cultura = uncultured.
    * sin daños = undamaged.
    * sin dar basto = left, right and centre.
    * sin darle importancia = airily.
    * sin darme cuenta = before I know what's happened.
    * sin darnos cuenta = out of sight.
    * sin darse cuenta = inadvertently, unwittingly, unknowingly, without realising, without noticing, unconsciously.
    * sin debatir = undiscussed.
    * sin decir nada = dumbly.
    * sin decir ni mú = as quiet as a mouse.
    * sin decir ni pío = as quiet as a mouse.
    * sin decir una palabra = without saying a word.
    * sin defecto = untainted, unblemished.
    * sin dejar huella = into thin air.
    * sin dejar nada fuera = the works!.
    * sin dejar rastro = into thin air.
    * sin dejarse amedrentar por = undaunted by.
    * sin dejarse amilanar por = undaunted by.
    * sin dejarse desanimar = undaunted.
    * sin dejarse intimidar por = undaunted by.
    * sin delimitar = unmapped.
    * sin demora = on the spot, straight away, without delay, at short notice, promptly, right away, at once.
    * sin demorarse un (solo) minuto = without a moment wasted, without a wasted moment, without a minute wasted, without a wasted minute.
    * sin demoras = in a timely fashion, in a timely manner.
    * sin desarrollar = undeveloped.
    * sin descansar = without (a) rest.
    * sin descanso = relentlessly, restlessly, breathlessly, unabated, without a break, without (a) rest, day in and day out, without respite.
    * sin descanso, sin un descanso, sin parar, sin descansar, sin interrupción = without a break.
    * sin descubrir = undiscovered.
    * sin descuento = undiscounted.
    * sin desdoblarse = unfolded.
    * sin desearlo = unwantedly.
    * sin desgastar = unworn.
    * sin desperdiciar un (solo) minuto = without a moment wasted, without a wasted moment, without a minute wasted, without a wasted minute.
    * sin determinación de culpabilidad = no-fault.
    * sin determinar = undefined.
    * sin detonar = unexploded.
    * sin deudas = debt free.
    * sin dientes = toothless.
    * sin diferencias = undifferentiated.
    * sin dificultad = without difficulty.
    * sin dificultad alguna = without a hitch.
    * sin diluir = undiluted.
    * sin dinero = impecunious.
    * sin dinero en metálico = cashless.
    * sin discapacidad = able-bodied.
    * sin discapacidades = able-bodied.
    * sin disciplina = undisciplined, ill-disciplined.
    * sin discriminar = indiscriminate, on equal terms.
    * sin discutir = no arguments!, undiscussed.
    * sin disminuir = non-decreasing, unabated.
    * sin disolver = undiluted.
    * sin disponer de = in the absence of.
    * sin división espacial = spatially unstructured.
    * sin doblarse = unfolded.
    * sin documentar = undocumented.
    * sin dolor = painless.
    * sin domicilio fijo = of no fixed abode.
    * sin drenar = undrained.
    * sin duda = doubtless, no doubt, of course, surely, to be sure, undoubtedly, indubitably, without a doubt, without doubt, no mistake, hands down.
    * sin duda alguna = without any doubt.
    * sin dudar = without a doubt.
    * sin dudarlo = without hesitation.
    * sin editar = unedited.
    * sin el menor asomo de duda = without a shadow of a doubt, beyond a shadow of a doubt, beyond a shadow of a doubt.
    * sin embargo = however, nevertheless, still, yet, that being said, all this said.
    * sin emitir humo = smokeless.
    * sin empleo = jobless.
    * sin encuadernar = unbound.
    * sin energía = lethargic.
    * sin engorros = hassle-free.
    * sin entallar = loosely hanging, baggy [baggier -comp., baggiest -sup.], saggy [saggier -comp., saggiest -sup.].
    * sin enterrar = unburied.
    * sin entusiasmo = half-hearted [halfhearted].
    * sin envolver = unwrapped.
    * sin errores = error-free.
    * sin escatimar = without stint, unstintingly.
    * sin escenificar = unproduced.
    * sin escrúpulos = unscrupulous, unconscionable, without scruples, unprincipled.
    * sin escurrir = undrained.
    * sin esfuerzo = effortless, effortlessly.
    * sin esfuerzo alguno = effortlessly.
    * sin especializar = non-specialised.
    * sin especificar = unspecified.
    * sin esperanza = hopeless, dispiritedly, hopelessly.
    * sin esperarlo = out of the blue, like a bolt out of the blue, like a bolt from the blue.
    * sin espinas = boneless.
    * sin estar obstaculizado por = untrammelled by.
    * sin estilo = dowdy [dowdier -comp., dowdiest -sup.].
    * sin estructura = unstructured.
    * sin estudios = ill-educated.
    * sin evaluar = unevaluated.
    * sin examinar = unexamined.
    * sin exceder el presupuesto = budgetable.
    * sin excepción = without exception, without fail.
    * sin excesivo rigor = loosely.
    * sin excusa justificada = unexcused.
    * sin existencias = out-of-stock.
    * sin éxito = unsuccessful.
    * sin experiencia = inexperience, callow [callower -comp., callowest -sup.].
    * sin explicar = unexplained.
    * sin explorar = unexplored.
    * sin explotar = untapped, unexploded.
    * sin extras = no-frills.
    * sin fallar = without fail.
    * sin fallos = flawlessly.
    * sin falta = without fail.
    * sin fecha = undated.
    * sin fechar = undated.
    * sin fianza = without bail.
    * sin fin = never-finishing, never-ending, bottomless, interminably, unending.
    * sin finalidad = purposeless.
    * sin financiación = unfunded.
    * sin fines lucrativos = non-profit [nonprofit], non-profit making.
    * sin firma = unsigned.
    * sin firmar = unsigned.
    * sin fondo = bottomless.
    * sin forma = bodilessly, formless.
    * sin formación = ill-educated.
    * sin formación previa = untrained.
    * sin forrar = uncovered.
    * sin fronteras = borderless.
    * sin fundamento = unwarranted, unsupported, ungrounded, without foundation, without basis.
    * sin fundamento alguno = without any basis.
    * sin ganas = half-heartedly.
    * sin gastos = no cost(s).
    * sin grabar = unengraved.
    * sin gracia = dowdy [dowdier -comp., dowdiest -sup.].
    * sin grasa = nonfat.
    * sin grasas = nonfat, fat free.
    * sin guardar una correlación = uncorrelated.
    * sin haber contacto = non-contact.
    * sin haber pasado por la calandria = uncalendered.
    * sin habla = speechless.
    * sin hacer = undone.
    * sin hacer caso = regardless.
    * sin hacer distinciones = one size fits all.
    * sin hacer ruido = as quiet as a mouse, furtively, softly.
    * sin herrar = unshod.
    * sin hilación = rambling.
    * sin hogar = homeless.
    * sin hueso = boneless.
    * sin humo = smokeless.
    * sin humor = humourless [humorless, -USA].
    * sin humos = smoke-free.
    * sin idea = clueless.
    * sin ideas preconcebidas = open mind.
    * sin identificar = unidentified, unmapped, unnamed.
    * sin igual = unequalled, unexampled, unsurpassed, unique unto itself, unrivalled [unrivaled, -USA], without equal, matchless.
    * sin impedimentos = unimpeded.
    * sin importancia = negligible, unimportant, trifling, immaterial, of no consequence.
    * sin importar = regardless of, independently of, disregarding.
    * sin importar + Adjetivo/Adverbio + que sea = however + Adjetivo/Adverbio.
    * sin importar el tiempo = all-weather.
    * sin importar las consecuencias = regardless of the consequences.
    * sin importar qué = no matter what/which.
    * sin impuestos = duty-free, tax-free.
    * sin impurezas = purified.
    * sin incluir = unlisted, exclusive of, not including, excluding.
    * sin incluir las comidas = self-catering.
    * sin índice = indexless.
    * sin + Infinitivo = without + Gerundio.
    * sin información sobre el estado anterior = stateless.
    * sin inhibiciones = uninhibited.
    * sin inmutarse = undeterred, impassively, without batting an eyelid, without turning a hair.
    * sin intención = involuntarily.
    * sin interés = unexciting, uninteresting, unmoving, vapid.
    * sin interrupción = continuously, without a break, without (a) rest, in an unbroken line.
    * sin interrupciones = in a single phase.
    * sin intervención de un intermediario = disintermediated.
    * sin intervención directa = nonobtrusive.
    * sin investigar = unresearched.
    * sin justificación = unreasonably, unjustified.
    * sin justificación alguna = wantonly.
    * sin justificar = unjustified.
    * sin la amenaza de = unthreatened (by).
    * sin la ayuda de nadie = single-handed, single-handedly.
    * sin la debida autorización = unauthorised [unauthorized, -USA], warrantless.
    * sin la debida consideración = without due consideration.
    * sin la más mínima duda = without the shadow of a doubt, without a shadow of a doubt.
    * sin la más mínima duda = beyond a shadow of a doubt.
    * sin la menor duda = no mistake, no doubt.
    * sin la menor idea = clueless.
    * sin la menor sombra de duda = without a shadow of a doubt.
    * sin la suficiente financiación = underfinanced [under-financed].
    * sin lavar = unwashed.
    * sin leer = unread.
    * sin levadura = unleavened.
    * sin licencia = unlicensed.
    * sin líder = leaderless.
    * sin limitaciones = without stint, without limit.
    * sin límite = without limit, without stint, interminably.
    * sin límite(s) = unbounded, unfettered, unstinting, unstintingly, the sky is the limit.
    * sin litoral = land-bound [landbound], land-locked [landlocked].
    * sin llamar la atención = inconspicuously.
    * sin lógica ni explicación = without rhyme or reason.
    * sin lugar a dudas = conclusively, undeniably, unquestionably, without any doubt, by all accounts, no mistake, no doubt, without a shadow of a doubt, beyond a shadow of a doubt, to be sure.
    * sin lujos = no-frills.
    * sin luna = moonless.
    * sin luz de luna = moonless.
    * sin madera = woodfree.
    * sin madurar = unripened.
    * sin maldad = guileless.
    * sin malicia = guileless.
    * sin mancha = unblemished, untainted, stainless.
    * sin mangas = sleeveless.
    * sin mantenimiento = maintenance-free.
    * sin marcar = unpriced.
    * sin marca registrada = non-proprietary.
    * sin más = out of hand, unceremoniously, unceremonious.
    * sin más dilación = without (any) further ado, without (any) more ado, without warning.
    * sin más ni más = unceremoniously, unceremonious, for the love of it, without much ado.
    * sin más preámbulos = without (any) further ado, without (any) more ado.
    * sin medir = unmeasured.
    * sin mencionar = not to mention, not to say, not to speak of.
    * sin meternos en el hecho de que = to say nothing of.
    * sin mezcla = unmixed.
    * sin mezclar = unmixed.
    * sin miedo = with confidence.
    * sin miramientos = unceremoniously.
    * sin misericordia = ruthlessly.
    * sin modificar = unmodified, unaltered, unedited.
    * sin molestias = hassle-free.
    * sin motivo alguno = wantonly.
    * sin motivo aparente = for no apparent reason, for apparently no reason.
    * sin motivo justificado = without justified reason.
    * sin moverse del sitio = in place.
    * sin movimiento = unmoving, motionless.
    * sin mucha antelación = at short notice.
    * sin mucha anticipación = at short notice.
    * sin mucha dificultad = painlessly.
    * sin muchas contemplaciones = unceremoniously.
    * sin muchos inconvenientes = without much grudging.
    * sin nada de gracia = unfunny.
    * sin nada que destacar = uneventful.
    * sin necesidad de ello = gratuitous, gratuitously.
    * sin necesidad de pensar = thought-free.
    * sin ninguna duda = without question, without any doubt, beyond doubt, beyond any doubt, no mistake, no doubt.
    * sin ningún cosste = without cost.
    * sin ningún coste = without charge, free of charge, at no cost, free of cost, cost free, for free, costless, at no charge.
    * sin ningún esfuerzo = effortlessly.
    * sin ningún esfuerzo mental = thought-free.
    * sin ningún género de duda = without any doubt whatsoever, without any doubt whatsoever.
    * sin ningún género de dudas = indisputably.
    * sin ningún motivo = for no reason, for no specific reason, for no particular reason, for no good reason.
    * sin ningún nivel de especialización = unskilled.
    * sin ningún otro motivo = (just) for the hell of (doing) it.
    * sin ningún remedio posible = beyond redemption.
    * sin ningún reparo = unabashed.
    * sin ningún resultado = to no avail, without any avail, of no avail.
    * sin ningún tipo de restricciones = no holds barred.
    * sin nombrar = unnamed.
    * sin norte = aimless, off course, rudderless.
    * sin notar la diferencia = seamlessly, seamless.
    * sin nubes = unclouded, uncloudy, cloudless.
    * sin numeración = unnumbered.
    * sin numerar = unnumbered.
    * sin obligaciones = at leisure.
    * sin obstáculos = unchecked, unhindered, unimpeded, unobstructed.
    * sin obstáculos de por medio = uncluttered.
    * sin obstrucciones = unobstructed.
    * sin olor = odourless [odorless, -USA].
    * sin olvidar = not to mention.
    * sin operario = unmanned.
    * sin oposición = without opposition, unchallenged, unopposed.
    * sin orden = unordered.
    * sin ordenar = unordered, unsorted.
    * sin orden ni concierto = higgledy-piggledy, without rhyme or reason.
    * sin originalidad = unoriginal.
    * sin palabras = wordless.
    * sin papel = paperless.
    * sin par = unequalled, unexampled, unsurpassed, unique unto itself, unique, without peer, unrivalled [unrivaled, -USA], without equal, matchless.
    * sin paralelo = unparalleled.
    * sin parangón = unparalleled, unequalled, without peer, matchless.
    * sin parar = steadily, non-stop, without a break, without (a) rest, on-the-go, interminably, without respite, without stopping.
    * sin parar a pensárselo = off-hand [offhand].
    * sin pararse a pensar = off-the-cuff, off the top of + Posesivo + head.
    * sin patente = non-proprietary.
    * sin pausa = breathlessly.
    * sin peculio = impecunious.
    * sin peligro alguno = safely.
    * sin pelo = hairless.
    * sin pelos en la lengua = outspokenly.
    * sin pensar = mindlessly.
    * sin pensar (en) = unmindful of, with little or no thought of, without thinking (about).
    * sin pensarlo = spur-of-the-moment, on the spur of the moment.
    * sin pensarlo demasiado = off-the-cuff, off the top of + Posesivo + head.
    * sin pensarlo detenidamente = out of + Posesivo + head.
    * sin pensarlo mucho = off the top of + Posesivo + head, right off the bat.
    * sin pensárselo = spur-of-the-moment, on the spur of the moment.
    * sin pensárselo dos veces = without a second thought, spur-of-the-moment, on the spur of the moment, at the drop of a hat.
    * sin pepitas = seedless.
    * sin percatarse = without realising, without noticing, unconsciously, unknowingly, unwittingly.
    * sin perder de vista = with an eye on.
    * sin perder un (solo) minuto = without a moment wasted, without a wasted moment, without a minute wasted, without a wasted minute.
    * sin pérdida = lossless.
    * sin perjuicio de = notwithstanding.
    * sin perjuicios = open mind.
    * sin permiso = without permission, unlicensed.
    * sin pestañear = impassively, without batting an eyelid, without turning a hair.
    * sin pico = flat-topped.
    * sin piedad = ruthlessly, remorseless, mercilessly.
    * sin piel = skinless.
    * sin pies ni cabeza = without rhyme or reason.
    * sin pistas = clueless.
    * sin planificar = unplanned.
    * sin poblar = unpopulated.
    * sin poder contenerse = helplessly.
    * sin poder dormir = sleepless.
    * sin poder extinguirlo = inextinguishably.
    * sin poder hacer nada = helplessly.
    * sin poner en duda la veracidad de Algo temporalmente = suspension of disbelief.
    * sin poner en escena = unproduced.
    * sin ponerlo en duda = uncritically.
    * sin ponerse en duda = unquestioned.
    * sin precedente = unparalleled, unexampled.
    * sin precedentes = unprecedented, record breaking, record-high, all-time.
    * sin precio = unpriced.
    * sin preguntar = unasked.
    * sin prejuicios = open-minded, fair-minded [fairminded].
    * sin prentesiones = unpretentious.
    * sin preocupaciones = carefree, worry-free.
    * sin preparación técnica = non-technical.
    * sin préstamo = non-circulating [noncirculating].
    * sin prestar atención = mindlessly.
    * sin pretensiones = unassuming, humble [humbler -comp., humblest -sup.].
    * sin previo aviso = unannounced, without warning, without notice, without prior notice, without prior notification, on spec, at the drop of a hat, without (any) further notice.
    * sin principios = unscrupulous, unprincipled.
    * sin prisa(s) = unhurriedly, leisurely.
    * sin problemas = smoothly, smooth [smoother -comp., smoothest -sup.], problem-free, trouble free [trouble-free], without a hitch, unproblematically, carefree, without difficulty, in good standing.
    * sin problemas de vista = sighted.
    * sin procesar = unprocessed.
    * sin propiedades = propertyless.
    * sin propiedad rural = landless.
    * sin protección = unprotected.
    * sin provocación = unprovoked.
    * sin publicar = unpublished.
    * sin pulir = unpolished.
    * sin quejarse = uncomplaining, uncomplainingly.
    * sin quemar = unburned.
    * sin querer = involuntarily, unwilling, by accident, accidentally, unintentionally, unwantedly.
    * sin querer + Infinitivo = unwilling to + Infinitivo.
    * sin quererlo = unwantedly.
    * sin que se entienda = slurred.
    * sin que se note la diferencia = seamlessly.
    * sin rabo = ecaudate.
    * sin razón = wanton, for no reason, for no specific reason, for no particular reason, for no good reason.
    * sin razón alguna = for no reason, for no specific reason, for no particular reason, for no good reason.
    * sin razón aparente = for no apparent reason, for apparently no reason.
    * sin razón justificada = for no reason, for no specific reason, for no good reason.
    * sin razón justificda = for no particular reason.
    * sin recelo = with confidence.
    * sin receta médica = over the counter.
    * sin reclamar = unredeemed.
    * sin recoger = uncollected.
    * sin reconocer = unrecognised [unrecognized, -USA].
    * sin reconocimiento de créditos = non-credit.
    * sin recopilar = uncollected.
    * sin recursos = resource-starved.
    * sin refinar = unrefined.
    * sin reflexionar = rashly.
    * sin registrar = unlisted.
    * sin reglamentar = unregulated.
    * sin regular = unregulated.
    * sin regularizar = unregulated.
    * sin relación = unrelated, unconnected.
    * sin relación con = unrelated to.
    * sin remedio = beyond repair, incurably, incorrigibly.
    * sin remordimientos = no-looking-back.
    * sin reparar = unrepaired.
    * sin reparo = unashamed.
    * sin reparos = unshielded.
    * sin representación = unrepresented.
    * sin reserva = unconditionally, unreserved.
    * sin reservas = unshielded, wholehearted [whole-hearted], go + the whole hog, the full monty, without reservation, wholeheartedly [whole-heartedly], forthright, categorical, uncompromising, uncompromisingly, unqualified, categoric, unmitigaged, unreserved, unreservedly.
    * sin residencia fija = of no fixed abode.
    * sin resistencia = unchallenged, unopposed.
    * sin resistirse = passively.
    * sin resolver = unresolved, unsolved, unsettled, uncleared.
    * sin respiro = without a break, without (a) rest, without respite.
    * sin responder = unanswered.
    * sin restricciones = unrestricted, unlimited, uninhibited, unrestrictive, unfettered, free-flowing, without stint, without limit, no holds barred, unencumbered.
    * sin restricciones de horario = unscheduled.
    * sin retirar = uncleared, uncollected.
    * sin retrasos = in a timely fashion, in a timely manner.
    * sin revelar = undisclosed, unrevealed.
    * sin revestir = uncoated.
    * sin revisar = unrevised.
    * sin riesgo = riskless.
    * sin rodeos = head-on, baldly, bluntly, outspokenly.
    * sin ruido = soundless.
    * sin rumbo = aimless, off course, rudderless.
    * sin saberlo = unbeknown to, unbeknownst to.
    * sin saber qué decir = nonplussed [nonplused].
    * sin sabor = tasteless.
    * sin saldar = uncollected.
    * sin salida al mar = land-bound [landbound], land-locked [landlocked].
    * sin sanción = unsanctioned.
    * sin seleccionar = unselected.
    * sin semillas = seedless.
    * sin sentido = meaningless, purposeless, pointless, senseless, wanton, nonsensical, unconscious.
    * sin sentir ningún reparo = unashamed.
    * sin sentir vergüenza = shamelessly.
    * sin ser afectado = untouched.
    * sin ser anunciado de antemano = unannounced.
    * sin ser consciente de ello = unbeknownst to, unbeknown to.
    * sin ser detectado = undetected.
    * sin ser evaluado por expertos = unrefereed.
    * sin ser necesario = gratuitous, gratuitously.
    * sin ser percibido = out of sight.
    * sin ser superado = unsurpassed.
    * sin ser visto = unseen, undetected, unobserved, out of sight.
    * sin significado = meaningless.
    * sin simplificar = unabridged.
    * * *

    cerveza sin alcohol — non-alcoholic beer, alcohol-free beer

    una pareja sin hijos — a couple with no children, a childless couple

    2)
    a)

    sin + inf — ( con significado activo) without -ing

    b)

    sin + inf — ( con significado pasivo)

    3)

    sin que + subj: no voy a ir sin que me inviten I'm not going if I haven't been invited; quítaselo sin que se dé cuenta — get it off him without his o without him noticing

    * * *

    Ex: Without AACR is doubtful whether computerised cataloguing would have been implemented so relatively painlessly and successfully = Sin las RCAA es dudoso que la catalogación automatizada se hubiera implementado tan fácilmente y con tanto éxito, relativamente hablando.

    * abogado sin escrúpulos = shyster.
    * acercarse sin ser visto = sidle up to.
    * afable pero sin sinceridad = suave.
    * agua sin gas = still water.
    * andar sin prisa = mosey.
    * arreglárselas sin = live without, get along without.
    * aunque sin ningún resultado = but (all) to no avail.
    * barato pero sin avergonzarse de ello = cheap and cheerful.
    * biblioteca sin muros = library without walls.
    * biblioteca sin paredes = library without walls.
    * bordado sin consido = needlepoint lace.
    * callejón sin salida = blind alley, catch 22, cul-de-sac, dead end, impasse.
    * camino sin rumbo = the road to nowhere.
    * casi sin previo aviso = without much notice.
    * coche sin caballos = horseless carriage automobile, horseless carriage.
    * colocado sin escalón entre pieza y pieza = edge-flush.
    * continuar sin detenerse = go straight ahead.
    * conversación sin trascendencia = small-talk.
    * decir rápidamente sin parar = rattle off.
    * dejar a Alguien sin aliento = leave + Nombre + breathless.
    * dejar sin cambiar = leave + unchanged.
    * dejar sin hacer = leave + undone.
    * dejar sin referente a una referencia anafórica = dangle + anaphoric reference.
    * dejar sin tocar = leave + Nombre + alone.
    * dejar sin trabajo = put + Nombre + out of work.
    * demanda sin variaciones = inelastic demand.
    * demostrar sin lugar a dudas = prove + conclusively.
    * demostrar sin ninguna duda = demonstrate + beyond any doubt, prove + beyond any doubt, prove + beyond all doubt.
    * demostrar sin ningún género de duda = demonstrate + beyond (all) doubt, demonstrate + emphatically, demonstrate + beyond any doubt, prove + beyond any doubt, prove + beyond any doubt.
    * desarrollarse sin problemas = go + smoothly.
    * estar sin vivir = be worried sick.
    * evaluación sin intervención del examinador = unobtrusive testing.
    * hablando sin rodeos = crudely put.
    * hablar sin parar = burble on.
    * hablar sin ser entendido = speak in + tongues.
    * hacerlo sin la ayuda de nadie = do + it + on + Posesivo + own.
    * homicidio sin premeditación = manslaughter.
    * ir a un Sitio sin prisa = mosey.
    * lanzarse sin ton ni son = dive + head-first.
    * más largo que un día sin pan = as long as (my/your) arm.
    * medicamento sin receta médica = over the counter medicine.
    * método de la media sin ponderar = unweighted means method.
    * nación sin estado = stateless nation.
    * noche sin poder dormir = sleepless night.
    * no hay dos sin tres = things + come in threes.
    * no miel sin hiel = no pain, no gain.
    * no sin fundamento = not without basis.
    * oficina sin papel = paperless office.
    * papel sin acidez = acid-free paper.
    * pasar desadvertido, pasar sin ser visto = sneak under + the radar.
    * pasar sin = live without, live without.
    * pasar sin ser visto = go + unnoticed.
    * película sin fin = filmloop [film loop/film-loop].
    * permanecer sin cambios = remain + unchanged.
    * permanecer sin especificar = remain + undefined.
    * pero sin conseguirlo = but no dice.
    * pero sin suerte = but no dice.
    * persona sin problemas de vista = sighted person.
    * personas sin hogar = homelessness.
    * personas sin techo = homelessness.
    * político sin escrúpulos = shyster.
    * pozo sin fondo = bottomless pit.
    * pregunta sin respuesta = unanswerable question.
    * publicación sin papel = paperless publishing.
    * quedarse sin aliento = run out of + breath.
    * quedarse sin habla = stun into + speechlessness.
    * quedarse sin negocio = go out of + business.
    * quedarse sin palabras = stun into + speechlessness.
    * rechazar sin más = dismiss + out of hand.
    * referencia anafórica sin referente = dangling anaphoric reference.
    * rima sin sentido = nonsense, nonsense verse.
    * salir sin ser visto = slip out.
    * sin abrir = unopened.
    * sin abrirse = unfolded.
    * sin abrochar = undone.
    * sin acabar = unfinished.
    * sin acentuar = unaccented.
    * sin acontecimientos que destacar = uneventful.
    * sin adornos = unadorned, unvarnished.
    * sin afectar = unaffected.
    * sin afeitar = unshaven.
    * sin afeitar desde hace varios días = stubbly [stubblier -comp., stubbliest -sup.].
    * sin afiliación a un partido político = non-partisan [nonpartisan].
    * sin afiliación religiosa = non-sectarian [nonsectarian].
    * sin agua = waterless.
    * sin aguja = needleless.
    * sin ajustar = unadjusted, loosely hanging, baggy [baggier -comp., baggiest -sup.], saggy [saggier -comp., saggiest -sup.].
    * sin alcohol = alcoholfree.
    * sin aliento = breathlessly, breathless.
    * sin alinear = unjustified.
    * sin alterar = unaltered, unmodified.
    * sin ambigüedad = unambiguous.
    * sin amor = loveless.
    * sin analizar = unexamined, unanalysed.
    * sin ánimo = despondently.
    * sin ánimo de lucro = non-profit [nonprofit], non-profit making, not-for-profit, generously.
    * sin apenas ser oído = as quiet as a mouse.
    * sin apoyo = unsupported.
    * sin apretar = loosely hanging, baggy [baggier -comp., baggiest -sup.], saggy [saggier -comp., saggiest -sup.].
    * sin árboles = treeless.
    * sin arreglo = beyond repair.
    * sin arrepentimiento = no-looking-back.
    * sin asignar = unallocated.
    * sin asignar todavía = unassigned.
    * sin asimilar = undigested.
    * sin atajar = unconfronted.
    * sin atractivo = unattractive.
    * sin atrasos = paid-up, in good standing.
    * sin autorización = unauthorised [unauthorized, -USA], unlicensed.
    * sin avergonzarse = unashamed.
    * sin avisar = unannounced, out of the blue, like a bolt out of the blue, like a bolt from the blue.
    * sin aviso previo = without warning.
    * sin ayuda = unaided, unassisted.
    * sin ayuda de nadie = all by + Reflexivo, by + Reflexivo.
    * sin barba = beardless.
    * sin barnizar = unvarnished.
    * sin base = unsupported, ill-founded.
    * sin blanca = broke, skint.
    * sin blanquear = unbleached.
    * sin blindar = unshielded.
    * sin bombo(s) ni platillo(s) = without much ado.
    * sin brillo = dull, tarnished.
    * sin cabeza = headless, decapitated.
    * sin cables = wireless.
    * sin cafeina = decaffeinated.
    * sin calorías = calorieless.
    * sin cambio = inviolate.
    * sin cambios = monotone, stable, undisturbed, unchanged, unmodified, unaltered, unedited.
    * sin cancelar = uncancelled.
    * sin canjear = unredeemed.
    * sin cansancio = indefatigably.
    * sin capacidad de discernimiento = undiscriminating.
    * sin cara = faceless.
    * sin carácter = boneless, spineless.
    * sin carne = meatless.
    * sin castigo = impunitive, unpunished.
    * sin catalogar = uncatalogued [uncataloged, -USA].
    * sin causa alguna = for no reason, for no specific reason, for no particular reason, for no good reason.
    * sin causa aparente = for no apparent reason, for apparently no reason.
    * sin causa justificada = without justified reason.
    * sin causar daño = harmlessly.
    * sin ceremonias = unceremonious, unceremoniously.
    * sin cerrar con llave = unlocked.
    * sin certeza de cobrar = on spec.
    * sin cesar = steadily.
    * sin clases sociales = classless.
    * sin clavos = studless.
    * sin clemencia = mercilessly.
    * sin cobrar = free of charge, unredeemed, uncollected.
    * sin cohesión = scrappily, scrappy [scrappier -comp., scrappiest -sup.], bitty [bittier -comp., bittiest -sup.].
    * sin cohibiciones = unselfconsciously.
    * sin cola = ecaudate.
    * sin columnas = single-column.
    * sin comentar = unannotated.
    * sin comerlo ni beberlo = without having anything to do with it.
    * sin comérselo ni bebérselo = without having anything to do with it.
    * sin compasión = mercilessly.
    * sin complicaciones = smoothly, boilerplate [boiler plate], uncomplicated, straightforward, uncomplicatedly, hassle-free.
    * sin comprimir = uncompressed.
    * sin comprobar = untested.
    * sin compromiso = without obligation, fancy-free.
    * sin compromisos = with no strings attached.
    * sin concluir = unfinished.
    * sin concretar = to be decided.
    * sin condiciones = unconditionally.
    * sin condiciones especiales = with no strings attached.
    * sin confirmar = unconfirmed, unsubstantiated, unvalidated, to be confirmed.
    * sin conocer = ignorant of.
    * sin conocimiento = unconscious.
    * sin conocimiento de causa = unbeknown to, unbeknownst to.
    * sin conservar información sobre las consultas realizadas anteriormente = stateless.
    * sin conservar información sobre las consultas realizadas anterior = stateless.
    * sin constancia de ello = unrecorded.
    * sin consumir = nonconsumptive.
    * sin contacto = non-contact.
    * sin contaminar = untainted, uncontaminated.
    * sin contar = not including, excluding.
    * sin contar con = in the absence of.
    * sin contenido = contentless, trivial.
    * sin contratiempos = smoothly.
    * sin control = uncontrolled.
    * sin controlar = unsupervised.
    * sin convicción = doubtfully, lamely.
    * sin coordinación = uncoordinated [unco-ordinated].
    * sin corregir = unamended, uncorrected, unrevised.
    * sin correlacionar = uncorrelated.
    * sin corroborar = unsubstantiated.
    * sin cortapisas = untrammelled.
    * sin cortar = uncut.
    * sin coscarse = without batting an eyelid, without turning a hair.
    * sin costas = land-bound [landbound], land-locked [landlocked].
    * sin coste alguno = at no personal cost, at no cost, without cost, costless, without charge, free of charge, free of cost, cost free, for free, at no charge.
    * sin costo adicional alguno = at no extra charge, at no extra cost, at no extra charge.
    * sin costuras = seamless.
    * sin crecimiento = non-growth.
    * sin créditos = non-credit.
    * sin criterio alguno = indiscriminate, indiscriminately.
    * sin cuajar = runny [runnier -comp., runniest -sup.].
    * sin cuantificar = unmeasured.
    * sin cubrir = unfilled.
    * sin cuestionarlo = uncritically.
    * sin cultura = uncultured.
    * sin daños = undamaged.
    * sin dar basto = left, right and centre.
    * sin darle importancia = airily.
    * sin darme cuenta = before I know what's happened.
    * sin darnos cuenta = out of sight.
    * sin darse cuenta = inadvertently, unwittingly, unknowingly, without realising, without noticing, unconsciously.
    * sin debatir = undiscussed.
    * sin decir nada = dumbly.
    * sin decir ni mú = as quiet as a mouse.
    * sin decir ni pío = as quiet as a mouse.
    * sin decir una palabra = without saying a word.
    * sin defecto = untainted, unblemished.
    * sin dejar huella = into thin air.
    * sin dejar nada fuera = the works!.
    * sin dejar rastro = into thin air.
    * sin dejarse amedrentar por = undaunted by.
    * sin dejarse amilanar por = undaunted by.
    * sin dejarse desanimar = undaunted.
    * sin dejarse intimidar por = undaunted by.
    * sin delimitar = unmapped.
    * sin demora = on the spot, straight away, without delay, at short notice, promptly, right away, at once.
    * sin demorarse un (solo) minuto = without a moment wasted, without a wasted moment, without a minute wasted, without a wasted minute.
    * sin demoras = in a timely fashion, in a timely manner.
    * sin desarrollar = undeveloped.
    * sin descansar = without (a) rest.
    * sin descanso = relentlessly, restlessly, breathlessly, unabated, without a break, without (a) rest, day in and day out, without respite.
    * sin descanso, sin un descanso, sin parar, sin descansar, sin interrupción = without a break.
    * sin descubrir = undiscovered.
    * sin descuento = undiscounted.
    * sin desdoblarse = unfolded.
    * sin desearlo = unwantedly.
    * sin desgastar = unworn.
    * sin desperdiciar un (solo) minuto = without a moment wasted, without a wasted moment, without a minute wasted, without a wasted minute.
    * sin determinación de culpabilidad = no-fault.
    * sin determinar = undefined.
    * sin detonar = unexploded.
    * sin deudas = debt free.
    * sin dientes = toothless.
    * sin diferencias = undifferentiated.
    * sin dificultad = without difficulty.
    * sin dificultad alguna = without a hitch.
    * sin diluir = undiluted.
    * sin dinero = impecunious.
    * sin dinero en metálico = cashless.
    * sin discapacidad = able-bodied.
    * sin discapacidades = able-bodied.
    * sin disciplina = undisciplined, ill-disciplined.
    * sin discriminar = indiscriminate, on equal terms.
    * sin discutir = no arguments!, undiscussed.
    * sin disminuir = non-decreasing, unabated.
    * sin disolver = undiluted.
    * sin disponer de = in the absence of.
    * sin división espacial = spatially unstructured.
    * sin doblarse = unfolded.
    * sin documentar = undocumented.
    * sin dolor = painless.
    * sin domicilio fijo = of no fixed abode.
    * sin drenar = undrained.
    * sin duda = doubtless, no doubt, of course, surely, to be sure, undoubtedly, indubitably, without a doubt, without doubt, no mistake, hands down.
    * sin duda alguna = without any doubt.
    * sin dudar = without a doubt.
    * sin dudarlo = without hesitation.
    * sin editar = unedited.
    * sin el menor asomo de duda = without a shadow of a doubt, beyond a shadow of a doubt, beyond a shadow of a doubt.
    * sin embargo = however, nevertheless, still, yet, that being said, all this said.
    * sin emitir humo = smokeless.
    * sin empleo = jobless.
    * sin encuadernar = unbound.
    * sin energía = lethargic.
    * sin engorros = hassle-free.
    * sin entallar = loosely hanging, baggy [baggier -comp., baggiest -sup.], saggy [saggier -comp., saggiest -sup.].
    * sin enterrar = unburied.
    * sin entusiasmo = half-hearted [halfhearted].
    * sin envolver = unwrapped.
    * sin errores = error-free.
    * sin escatimar = without stint, unstintingly.
    * sin escenificar = unproduced.
    * sin escrúpulos = unscrupulous, unconscionable, without scruples, unprincipled.
    * sin escurrir = undrained.
    * sin esfuerzo = effortless, effortlessly.
    * sin esfuerzo alguno = effortlessly.
    * sin especializar = non-specialised.
    * sin especificar = unspecified.
    * sin esperanza = hopeless, dispiritedly, hopelessly.
    * sin esperarlo = out of the blue, like a bolt out of the blue, like a bolt from the blue.
    * sin espinas = boneless.
    * sin estar obstaculizado por = untrammelled by.
    * sin estilo = dowdy [dowdier -comp., dowdiest -sup.].
    * sin estructura = unstructured.
    * sin estudios = ill-educated.
    * sin evaluar = unevaluated.
    * sin examinar = unexamined.
    * sin exceder el presupuesto = budgetable.
    * sin excepción = without exception, without fail.
    * sin excesivo rigor = loosely.
    * sin excusa justificada = unexcused.
    * sin existencias = out-of-stock.
    * sin éxito = unsuccessful.
    * sin experiencia = inexperience, callow [callower -comp., callowest -sup.].
    * sin explicar = unexplained.
    * sin explorar = unexplored.
    * sin explotar = untapped, unexploded.
    * sin extras = no-frills.
    * sin fallar = without fail.
    * sin fallos = flawlessly.
    * sin falta = without fail.
    * sin fecha = undated.
    * sin fechar = undated.
    * sin fianza = without bail.
    * sin fin = never-finishing, never-ending, bottomless, interminably, unending.
    * sin finalidad = purposeless.
    * sin financiación = unfunded.
    * sin fines lucrativos = non-profit [nonprofit], non-profit making.
    * sin firma = unsigned.
    * sin firmar = unsigned.
    * sin fondo = bottomless.
    * sin forma = bodilessly, formless.
    * sin formación = ill-educated.
    * sin formación previa = untrained.
    * sin forrar = uncovered.
    * sin fronteras = borderless.
    * sin fundamento = unwarranted, unsupported, ungrounded, without foundation, without basis.
    * sin fundamento alguno = without any basis.
    * sin ganas = half-heartedly.
    * sin gastos = no cost(s).
    * sin grabar = unengraved.
    * sin gracia = dowdy [dowdier -comp., dowdiest -sup.].
    * sin grasa = nonfat.
    * sin grasas = nonfat, fat free.
    * sin guardar una correlación = uncorrelated.
    * sin haber contacto = non-contact.
    * sin haber pasado por la calandria = uncalendered.
    * sin habla = speechless.
    * sin hacer = undone.
    * sin hacer caso = regardless.
    * sin hacer distinciones = one size fits all.
    * sin hacer ruido = as quiet as a mouse, furtively, softly.
    * sin herrar = unshod.
    * sin hilación = rambling.
    * sin hogar = homeless.
    * sin hueso = boneless.
    * sin humo = smokeless.
    * sin humor = humourless [humorless, -USA].
    * sin humos = smoke-free.
    * sin idea = clueless.
    * sin ideas preconcebidas = open mind.
    * sin identificar = unidentified, unmapped, unnamed.
    * sin igual = unequalled, unexampled, unsurpassed, unique unto itself, unrivalled [unrivaled, -USA], without equal, matchless.
    * sin impedimentos = unimpeded.
    * sin importancia = negligible, unimportant, trifling, immaterial, of no consequence.
    * sin importar = regardless of, independently of, disregarding.
    * sin importar + Adjetivo/Adverbio + que sea = however + Adjetivo/Adverbio.
    * sin importar el tiempo = all-weather.
    * sin importar las consecuencias = regardless of the consequences.
    * sin importar qué = no matter what/which.
    * sin impuestos = duty-free, tax-free.
    * sin impurezas = purified.
    * sin incluir = unlisted, exclusive of, not including, excluding.
    * sin incluir las comidas = self-catering.
    * sin índice = indexless.
    * sin + Infinitivo = without + Gerundio.
    * sin información sobre el estado anterior = stateless.
    * sin inhibiciones = uninhibited.
    * sin inmutarse = undeterred, impassively, without batting an eyelid, without turning a hair.
    * sin intención = involuntarily.
    * sin interés = unexciting, uninteresting, unmoving, vapid.
    * sin interrupción = continuously, without a break, without (a) rest, in an unbroken line.
    * sin interrupciones = in a single phase.
    * sin intervención de un intermediario = disintermediated.
    * sin intervención directa = nonobtrusive.
    * sin investigar = unresearched.
    * sin justificación = unreasonably, unjustified.
    * sin justificación alguna = wantonly.
    * sin justificar = unjustified.
    * sin la amenaza de = unthreatened (by).
    * sin la ayuda de nadie = single-handed, single-handedly.
    * sin la debida autorización = unauthorised [unauthorized, -USA], warrantless.
    * sin la debida consideración = without due consideration.
    * sin la más mínima duda = without the shadow of a doubt, without a shadow of a doubt.
    * sin la más mínima duda = beyond a shadow of a doubt.
    * sin la menor duda = no mistake, no doubt.
    * sin la menor idea = clueless.
    * sin la menor sombra de duda = without a shadow of a doubt.
    * sin la suficiente financiación = underfinanced [under-financed].
    * sin lavar = unwashed.
    * sin leer = unread.
    * sin levadura = unleavened.
    * sin licencia = unlicensed.
    * sin líder = leaderless.
    * sin limitaciones = without stint, without limit.
    * sin límite = without limit, without stint, interminably.
    * sin límite(s) = unbounded, unfettered, unstinting, unstintingly, the sky is the limit.
    * sin litoral = land-bound [landbound], land-locked [landlocked].
    * sin llamar la atención = inconspicuously.
    * sin lógica ni explicación = without rhyme or reason.
    * sin lugar a dudas = conclusively, undeniably, unquestionably, without any doubt, by all accounts, no mistake, no doubt, without a shadow of a doubt, beyond a shadow of a doubt, to be sure.
    * sin lujos = no-frills.
    * sin luna = moonless.
    * sin luz de luna = moonless.
    * sin madera = woodfree.
    * sin madurar = unripened.
    * sin maldad = guileless.
    * sin malicia = guileless.
    * sin mancha = unblemished, untainted, stainless.
    * sin mangas = sleeveless.
    * sin mantenimiento = maintenance-free.
    * sin marcar = unpriced.
    * sin marca registrada = non-proprietary.
    * sin más = out of hand, unceremoniously, unceremonious.
    * sin más dilación = without (any) further ado, without (any) more ado, without warning.
    * sin más ni más = unceremoniously, unceremonious, for the love of it, without much ado.
    * sin más preámbulos = without (any) further ado, without (any) more ado.
    * sin medir = unmeasured.
    * sin mencionar = not to mention, not to say, not to speak of.
    * sin meternos en el hecho de que = to say nothing of.
    * sin mezcla = unmixed.
    * sin mezclar = unmixed.
    * sin miedo = with confidence.
    * sin miramientos = unceremoniously.
    * sin misericordia = ruthlessly.
    * sin modificar = unmodified, unaltered, unedited.
    * sin molestias = hassle-free.
    * sin motivo alguno = wantonly.
    * sin motivo aparente = for no apparent reason, for apparently no reason.
    * sin motivo justificado = without justified reason.
    * sin moverse del sitio = in place.
    * sin movimiento = unmoving, motionless.
    * sin mucha antelación = at short notice.
    * sin mucha anticipación = at short notice.
    * sin mucha dificultad = painlessly.
    * sin muchas contemplaciones = unceremoniously.
    * sin muchos inconvenientes = without much grudging.
    * sin nada de gracia = unfunny.
    * sin nada que destacar = uneventful.
    * sin necesidad de ello = gratuitous, gratuitously.
    * sin necesidad de pensar = thought-free.
    * sin ninguna duda = without question, without any doubt, beyond doubt, beyond any doubt, no mistake, no doubt.
    * sin ningún cosste = without cost.
    * sin ningún coste = without charge, free of charge, at no cost, free of cost, cost free, for free, costless, at no charge.
    * sin ningún esfuerzo = effortlessly.
    * sin ningún esfuerzo mental = thought-free.
    * sin ningún género de duda = without any doubt whatsoever, without any doubt whatsoever.
    * sin ningún género de dudas = indisputably.
    * sin ningún motivo = for no reason, for no specific reason, for no particular reason, for no good reason.
    * sin ningún nivel de especialización = unskilled.
    * sin ningún otro motivo = (just) for the hell of (doing) it.
    * sin ningún remedio posible = beyond redemption.
    * sin ningún reparo = unabashed.
    * sin ningún resultado = to no avail, without any avail, of no avail.
    * sin ningún tipo de restricciones = no holds barred.
    * sin nombrar = unnamed.
    * sin norte = aimless, off course, rudderless.
    * sin notar la diferencia = seamlessly, seamless.
    * sin nubes = unclouded, uncloudy, cloudless.
    * sin numeración = unnumbered.
    * sin numerar = unnumbered.
    * sin obligaciones = at leisure.
    * sin obstáculos = unchecked, unhindered, unimpeded, unobstructed.
    * sin obstáculos de por medio = uncluttered.
    * sin obstrucciones = unobstructed.
    * sin olor = odourless [odorless, -USA].
    * sin olvidar = not to mention.
    * sin operario = unmanned.
    * sin oposición = without opposition, unchallenged, unopposed.
    * sin orden = unordered.
    * sin ordenar = unordered, unsorted.
    * sin orden ni concierto = higgledy-piggledy, without rhyme or reason.
    * sin originalidad = unoriginal.
    * sin palabras = wordless.
    * sin papel = paperless.
    * sin par = unequalled, unexampled, unsurpassed, unique unto itself, unique, without peer, unrivalled [unrivaled, -USA], without equal, matchless.
    * sin paralelo = unparalleled.
    * sin parangón = unparalleled, unequalled, without peer, matchless.
    * sin parar = steadily, non-stop, without a break, without (a) rest, on-the-go, interminably, without respite, without stopping.
    * sin parar a pensárselo = off-hand [offhand].
    * sin pararse a pensar = off-the-cuff, off the top of + Posesivo + head.
    * sin patente = non-proprietary.
    * sin pausa = breathlessly.
    * sin peculio = impecunious.
    * sin peligro alguno = safely.
    * sin pelo = hairless.
    * sin pelos en la lengua = outspokenly.
    * sin pensar = mindlessly.
    * sin pensar (en) = unmindful of, with little or no thought of, without thinking (about).
    * sin pensarlo = spur-of-the-moment, on the spur of the moment.
    * sin pensarlo demasiado = off-the-cuff, off the top of + Posesivo + head.
    * sin pensarlo detenidamente = out of + Posesivo + head.
    * sin pensarlo mucho = off the top of + Posesivo + head, right off the bat.
    * sin pensárselo = spur-of-the-moment, on the spur of the moment.
    * sin pensárselo dos veces = without a second thought, spur-of-the-moment, on the spur of the moment, at the drop of a hat.
    * sin pepitas = seedless.
    * sin percatarse = without realising, without noticing, unconsciously, unknowingly, unwittingly.
    * sin perder de vista = with an eye on.
    * sin perder un (solo) minuto = without a moment wasted, without a wasted moment, without a minute wasted, without a wasted minute.
    * sin pérdida = lossless.
    * sin perjuicio de = notwithstanding.
    * sin perjuicios = open mind.
    * sin permiso = without permission, unlicensed.
    * sin pestañear = impassively, without batting an eyelid, without turning a hair.
    * sin pico = flat-topped.
    * sin piedad = ruthlessly, remorseless, mercilessly.
    * sin piel = skinless.
    * sin pies ni cabeza = without rhyme or reason.
    * sin pistas = clueless.
    * sin planificar = unplanned.
    * sin poblar = unpopulated.
    * sin poder contenerse = helplessly.
    * sin poder dormir = sleepless.
    * sin poder extinguirlo = inextinguishably.
    * sin poder hacer nada = helplessly.
    * sin poner en duda la veracidad de Algo temporalmente = suspension of disbelief.
    * sin poner en escena = unproduced.
    * sin ponerlo en duda = uncritically.
    * sin ponerse en duda = unquestioned.
    * sin precedente = unparalleled, unexampled.
    * sin precedentes = unprecedented, record breaking, record-high, all-time.
    * sin precio = unpriced.
    * sin preguntar = unasked.
    * sin prejuicios = open-minded, fair-minded [fairminded].
    * sin prentesiones = unpretentious.
    * sin preocupaciones = carefree, worry-free.
    * sin preparación técnica = non-technical.
    * sin préstamo = non-circulating [noncirculating].
    * sin prestar atención = mindlessly.
    * sin pretensiones = unassuming, humble [humbler -comp., humblest -sup.].
    * sin previo aviso = unannounced, without warning, without notice, without prior notice, without prior notification, on spec, at the drop of a hat, without (any) further notice.
    * sin principios = unscrupulous, unprincipled.
    * sin prisa(s) = unhurriedly, leisurely.
    * sin problemas = smoothly, smooth [smoother -comp., smoothest -sup.], problem-free, trouble free [trouble-free], without a hitch, unproblematically, carefree, without difficulty, in good standing.
    * sin problemas de vista = sighted.
    * sin procesar = unprocessed.
    * sin propiedades = propertyless.
    * sin propiedad rural = landless.
    * sin protección = unprotected.
    * sin provocación = unprovoked.
    * sin publicar = unpublished.
    * sin pulir = unpolished.
    * sin quejarse = uncomplaining, uncomplainingly.
    * sin quemar = unburned.
    * sin querer = involuntarily, unwilling, by accident, accidentally, unintentionally, unwantedly.
    * sin querer + Infinitivo = unwilling to + Infinitivo.
    * sin quererlo = unwantedly.
    * sin que se entienda = slurred.
    * sin que se note la diferencia = seamlessly.
    * sin rabo = ecaudate.
    * sin razón = wanton, for no reason, for no specific reason, for no particular reason, for no good reason.
    * sin razón alguna = for no reason, for no specific reason, for no particular reason, for no good reason.
    * sin razón aparente = for no apparent reason, for apparently no reason.
    * sin razón justificada = for no reason, for no specific reason, for no good reason.
    * sin razón justificda = for no particular reason.
    * sin recelo = with confidence.
    * sin receta médica = over the counter.
    * sin reclamar = unredeemed.
    * sin recoger = uncollected.
    * sin reconocer = unrecognised [unrecognized, -USA].
    * sin reconocimiento de créditos = non-credit.
    * sin recopilar = uncollected.
    * sin recursos = resource-starved.
    * sin refinar = unrefined.
    * sin reflexionar = rashly.
    * sin registrar = unlisted.
    * sin reglamentar = unregulated.
    * sin regular = unregulated.
    * sin regularizar = unregulated.
    * sin relación = unrelated, unconnected.
    * sin relación con = unrelated to.
    * sin remedio = beyond repair, incurably, incorrigibly.
    * sin remordimientos = no-looking-back.
    * sin reparar = unrepaired.
    * sin reparo = unashamed.
    * sin reparos = unshielded.
    * sin representación = unrepresented.
    * sin reserva = unconditionally, unreserved.
    * sin reservas = unshielded, wholehearted [whole-hearted], go + the whole hog, the full monty, without reservation, wholeheartedly [whole-heartedly], forthright, categorical, uncompromising, uncompromisingly, unqualified, categoric, unmitigaged, unreserved, unreservedly.
    * sin residencia fija = of no fixed abode.
    * sin resistencia = unchallenged, unopposed.
    * sin resistirse = passively.
    * sin resolver = unresolved, unsolved, unsettled, uncleared.
    * sin respiro = without a break, without (a) rest, without respite.
    * sin responder = unanswered.
    * sin restricciones = unrestricted, unlimited, uninhibited, unrestrictive, unfettered, free-flowing, without stint, without limit, no holds barred, unencumbered.
    * sin restricciones de horario = unscheduled.
    * sin retirar = uncleared, uncollected.
    * sin retrasos = in a timely fashion, in a timely manner.
    * sin revelar = undisclosed, unrevealed.
    * sin revestir = uncoated.
    * sin revisar = unrevised.
    * sin riesgo = riskless.
    * sin rodeos = head-on, baldly, bluntly, outspokenly.
    * sin ruido = soundless.
    * sin rumbo = aimless, off course, rudderless.
    * sin saberlo = unbeknown to, unbeknownst to.
    * sin saber qué decir = nonplussed [nonplused].
    * sin sabor = tasteless.
    * sin saldar = uncollected.
    * sin salida al mar = land-bound [landbound], land-locked [landlocked].
    * sin sanción = unsanctioned.
    * sin seleccionar = unselected.
    * sin semillas = seedless.
    * sin sentido = meaningless, purposeless, pointless, senseless, wanton, nonsensical, unconscious.
    * sin sentir ningún reparo = unashamed.
    * sin sentir vergüenza = shamelessly.
    * sin ser afectado = untouched.
    * sin ser anunciado de antemano = unannounced.
    * sin ser consciente de ello = unbeknownst to, unbeknown to.
    * sin ser detectado = undetected.
    * sin ser evaluado por expertos = unrefereed.
    * sin ser necesario = gratuitous, gratuitously.
    * sin ser percibido = out of sight.
    * sin ser superado = unsurpassed.
    * sin ser visto = unseen, undetected, unobserved, out of sight.
    * sin significado = meaningless.
    * sin simplificar = unabridged.

    * * *
    A without
    lo tomo con leche y sin azúcar I take milk but no sugar
    reserva garantizada sin recargo guaranteed reservation at no extra cost
    seguimos sin noticias we still haven't had any news
    solicite más información sin compromiso send for more details without obligation
    sin previo aviso with no advance warning
    ¡tírate! ¡sin miedo! jump! don't be scared!
    ¿qué harías tú sin mí? what would you do without me?
    agua mineral sin gas still mineral water
    cerveza sin alcohol non-alcoholic beer, alcohol-free beer
    una pareja sin hijos a couple with no children, a childless couple
    un vuelo sin escalas a non-stop o direct flight
    me quedé sin pan I ran out of bread
    se quedó sin trabajo he lost his job
    una persona totalmente sin escrúpulos a completely unscrupulous person
    B
    1 sin + INF (con significado activo) without -ING
    se fue sin pagar she left without paying
    lo mandaron a la cama sin cenar they sent him to bed without any dinner
    somos diez sin contarlos a ellos there are ten of us not counting them
    estuvo una semana entera sin hablarme she didn't speak to me for a whole week, she went a whole week without speaking to me
    sigo sin entender I still don't understand
    la pisé sin querer I accidentally trod on her foot
    2 sin + INF
    (con significado pasivo): una camisa sin planchar an unironed shirt, a shirt that hasn't/hadn't been ironed
    esto está aún sin terminar this still isn't finished
    C sin QUE + SUBJ:
    los días pasan sin que dé señales de vida the days go by and there is still no word from him, the days go by with no word from him o without any word from him
    no voy a ir sin que me inviten I'm not going if I haven't been invited
    quítaselo sin que se dé cuenta get it off him without his o without him noticing
    Compuesto:
    * * *

     

    sin preposición
    1 without;

    seguimos sin noticias we still haven't had any news;
    agua mineral sin gas still mineral water;
    cerveza sin alcohol non-alcoholic beer, alcohol-free beer;
    me quedé sin pan I ran out of bread
    2


    estuvo una semana sin hablarme she didn't speak to me for a week;
    sigo sin entender I still don't understand;
    la pisé sin querer I accidentally trod on her foot


    esto está aún sin terminar it still isn't finished
    3 sin que + subj:

    quítaselo sin que se dé cuenta get it off him without his o without him noticing;
    See Also→ embargo 2
    sin preposición without: se marchó sin ellos, he left without them
    costó mil pesetas, sin contar el IVA, it cost one thousand pesetas, not including VAT
    el edificio estaba sin terminar, the building was unfinished
    entre sin llamar, come in without knocking
    saldré sin que me vea, I'll go out without him seeing
    una bebida sin alcohol, a non-alcoholic drink
    ' sin' also found in these entries:
    Spanish:
    A
    - abierta
    - abierto
    - absoluta
    - absoluto
    - accidental
    - acéfala
    - acéfalo
    - agotar
    - agotada
    - agotado
    - agreste
    - ahora
    - ahorcarse
    - ajena
    - ajeno
    - alguna
    - alguno
    - aliento
    - alquilar
    - ambages
    - amorfa
    - amorfo
    - aparente
    - asesinar
    - aviso
    - ayunas
    - bagatela
    - baja
    - bajo
    - bañera
    - berrido
    - bien
    - blanca
    - blanco
    - bocado
    - bregar
    - bruta
    - bruto
    - burbuja
    - caldo
    - calle
    - callejón
    - calva
    - camino
    - caprichosa
    - caprichoso
    - causa
    - cazo
    - cero
    English:
    ability
    - accident
    - accidental
    - accidentally
    - accustom
    - ado
    - afraid
    - age
    - agree
    - aimless
    - aimlessly
    - all-time
    - ammunition
    - another
    - antsy
    - anyhow
    - arrogant
    - at
    - attach
    - away
    - AWOL
    - babble
    - backbencher
    - backing
    - bare
    - barge in
    - basic
    - bat
    - bean
    - begin
    - behave
    - beyond
    - blank
    - blind alley
    - blue
    - blunt
    - bluntly
    - blurt out
    - boarding card
    - boarding pass
    - book
    - boorish
    - bootstrap
    - bottomless
    - break
    - breath
    - breathless
    - broke
    - busywork
    - buzz off
    * * *
    SIN nf
    1. (abrev de Servicio de Inteligencia Nacional del Perú) = Peruvian national intelligence department
    2. (abrev de Servicio de Inmigración y Naturalización) INS [US Immigration and Naturalization Service]
    * * *
    prp without;
    sin preguntar without asking;
    sin decir nada without (saying) a word;
    sin paraguas without an umbrella;
    sin que without;
    y sin más and without further ado;
    me lo dijo así, sin más that’s all he said to me, just that
    * * *
    sin prep
    1) : without
    sin querer: unintentionally
    sin refinar: unrefined
    2)
    sin que : without
    lo hicimos sin que él se diera cuenta: we did it without him noticing
    * * *
    sin prep
    1. (en general) without

    Spanish-English dictionary > sin

  • 3 Eccles, William Henry

    [br]
    b. 23 August 1875 Ulverston, Cumbria, England
    d. 27 April 1966 Oxford, England
    [br]
    English physicist who made important contributions to the development of radio communications.
    [br]
    After early education at home and at private school, Eccles won a scholarship to the Royal College of Science (now Imperial College), London, where he gained a First Class BSc in physics in 1898. He then worked as a demonstrator at the college and studied coherers, for which he obtained a DSc in 1901. Increasingly interested in electrical engineering, he joined the Marconi Company in 1899 to work on oscillators at the Poole experimental radio station, but in 1904 he returned to academic life as Professor of Mathematics and Physics and Department Head at South West Polytechnic, Chelsea. There he discovered ways of using the negative resistance of galena-crystal detectors to generate oscillations and gave a mathematical description of the operation of the triode valve. In 1910 he became Reader in Engineering at University College, London, where he published a paper explaining the reflection of radio waves by the ionosphere and designed a 60 MHz short-wave transmitter. From 1916 to 1926 he was Professor of Applied Physics and Electrical Engineering at the Finsbury City \& Guilds College and a private consulting engineer. During the First World War he was a military scientific adviser and Secretary to the Joint Board of Scientific Societies. After the war he made many contributions to electronic-circuit development, many of them (including the Eccles-Jordan "flip-flop" patented in 1918 and used in binary counters) in conjunction with F.W.Jordan, about whom little seems to be known. Illness forced Eccles's premature academic retirement in 1926, but he remained active as a consultant for many years.
    [br]
    Principal Honours and Distinctions
    FRS 1921. President, Institution of Electrical Engineers, 1926–7. President, Physical Society 1929. President, Radio Society of Great Britain.
    Bibliography
    1912, "On the diurnal variation of the electric waves occurring in nature and on the propagation of electric waves round the bend of the earth", Proceedings of the Royal Society 87:79. 1919, with F.W.Jordan, "Method of using two triode valves in parallel for generating oscillations", Electrician 299:3.
    1915, Handbook of Wireless Telegraphy.
    1921, Continuous Wave Wireless Telegraphy.
    Further Reading
    1971, "William Henry Eccles, 1875–1966", Biographical Memoirs of the Royal Society, London, 17.
    KF

    Biographical history of technology > Eccles, William Henry

  • 4 Armstrong, Edwin Howard

    [br]
    b. 18 December 1890 New York City, New York, USA
    d. 31 January 1954 New York City, New York, USA
    [br]
    American engineer who invented the regenerative and superheterodyne amplifiers and frequency modulation, all major contributions to radio communication and broadcasting.
    [br]
    Interested from childhood in anything mechanical, as a teenager Armstrong constructed a variety of wireless equipment in the attic of his parents' home, including spark-gap transmitters and receivers with iron-filing "coherer" detectors capable of producing weak Morse-code signals. In 1912, while still a student of engineering at Columbia University, he applied positive, i.e. regenerative, feedback to a Lee De Forest triode amplifier to just below the point of oscillation and obtained a gain of some 1,000 times, giving a receiver sensitivity very much greater than hitherto possible. Furthermore, by allowing the circuit to go into full oscillation he found he could generate stable continuous-waves, making possible the first reliable CW radio transmitter. Sadly, his claim to priority with this invention, for which he filed US patents in 1913, the year he graduated from Columbia, led to many years of litigation with De Forest, to whom the US Supreme Court finally, but unjustly, awarded the patent in 1934. The engineering world clearly did not agree with this decision, for the Institution of Radio Engineers did not revoke its previous award of a gold medal and he subsequently received the highest US scientific award, the Franklin Medal, for this discovery.
    During the First World War, after some time as an instructor at Columbia University, he joined the US Signal Corps laboratories in Paris, where in 1918 he invented the superheterodyne, a major contribution to radio-receiver design and for which he filed a patent in 1920. The principle of this circuit, which underlies virtually all modern radio, TV and radar reception, is that by using a local oscillator to convert, or "heterodyne", a wanted signal to a lower, fixed, "intermediate" frequency it is possible to obtain high amplification and selectivity without the need to "track" the tuning of numerous variable circuits.
    Returning to Columbia after the war and eventually becoming Professor of Electrical Engineering, he made a fortune from the sale of his patent rights and used part of his wealth to fund his own research into further problems in radio communication, particularly that of receiver noise. In 1933 he filed four patents covering the use of wide-band frequency modulation (FM) to achieve low-noise, high-fidelity sound broadcasting, but unable to interest RCA he eventually built a complete broadcast transmitter at his own expense in 1939 to prove the advantages of his system. Unfortunately, there followed another long battle to protect and exploit his patents, and exhausted and virtually ruined he took his own life in 1954, just as the use of FM became an established technique.
    [br]
    Principal Honours and Distinctions
    Institution of Radio Engineers Medal of Honour 1917. Franklin Medal 1937. IERE Edison Medal 1942. American Medal for Merit 1947.
    Bibliography
    1922, "Some recent developments in regenerative circuits", Proceedings of the Institute of Radio Engineers 10:244.
    1924, "The superheterodyne. Its origin, developments and some recent improvements", Proceedings of the Institute of Radio Engineers 12:549.
    1936, "A method of reducing disturbances in radio signalling by a system of frequency modulation", Proceedings of the Institute of Radio Engineers 24:689.
    Further Reading
    L.Lessing, 1956, Man of High-Fidelity: Edwin Howard Armstrong, pbk 1969 (the only definitive biography).
    W.R.Maclaurin and R.J.Harman, 1949, Invention \& Innovation in the Radio Industry.
    J.R.Whitehead, 1950, Super-regenerative Receivers.
    A.N.Goldsmith, 1948, Frequency Modulation (for the background to the development of frequency modulation, in the form of a large collection of papers and an extensive bibliog raphy).
    KF

    Biographical history of technology > Armstrong, Edwin Howard

  • 5 Braun, Karl Ferdinand

    [br]
    b. 6 June 1850 Fulda, Hesse, Germany
    d. 20 April 1918 New York City, New York, USA
    [br]
    German physicist who shared with Marconi the 1909 Nobel Prize for Physics for developments in wireless telegraphy; inventor of the cathode ray oscilloscope.
    [br]
    After obtaining degrees from the universities of Marburg and Berlin (PhD) and spending a short time as Headmaster of the Thomas School in Berlin, Braun successively held professorships in theoretical physics at the universities of Marburg (1876), Strasbourg (1880) and Karlsruhe (1883) before becoming Professor of Experimental Physics at Tübingen in 1885 and Director and Professor of Physics at Strasbourg in 1895.
    During this time he devised experimental apparatus to determine the dielectric constant of rock salt and developed the Braun high-tension electrometer. He also discovered that certain mineral sulphide crystals would only conduct electricity in one direction, a rectification effect that made it possible to detect and demodulate radio signals in a more reliable manner than was possible with the coherer. Primarily, however, he was concerned with improving Marconi's radio transmitter to increase its broadcasting range. By using a transmitter circuit comprising a capacitor and a spark-gap, coupled to an aerial without a spark-gap, he was able to obtain much greater oscillatory currents in the latter, and by tuning the transmitter so that the oscillations occupied only a narrow frequency band he reduced the interference with other transmitters. Other achievements include the development of a directional aerial and the first practical wavemeter, and the measurement in Strasbourg of the strength of radio waves received from the Eiffel Tower transmitter in Paris. For all this work he subsequently shared with Marconi the 1909 Nobel Prize for Physics.
    Around 1895 he carried out experiments using a torsion balance in order to measure the universal gravitational constant, g, but the work for which he is probably best known is the addition of deflecting plates and a fluorescent screen to the Crooke's tube in 1897 in order to study the characteristics of high-frequency currents. The oscilloscope, as it was called, was not only the basis of a now widely used and highly versatile test instrument but was the forerunner of the cathode ray tube, or CRT, used for the display of radar and television images.
    At the beginning of the First World War, while in New York to testify in a patent suit, he was trapped by the entry of the USA into the war and remained in Brooklyn with his son until his death.
    [br]
    Principal Honours and Distinctions
    Nobel Prize for Physics (jointly with Marconi) 1909.
    Bibliography
    1874, "Assymetrical conduction of certain metal sulphides", Pogg. Annal. 153:556 (provides an account of the discovery of the crystal rectifier).
    1897, "On a method for the demonstration and study of currents varying with time", Wiedemann's Annalen 60:552 (his description of the cathode ray oscilloscope as a measuring tool).
    Further Reading
    K.Schlesinger \& E.G.Ramberg, 1962, "Beamdeflection and photo-devices", Proceedings of the Institute of Radio Engineers 50, 991.
    KF

    Biographical history of technology > Braun, Karl Ferdinand

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