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1 атомные свойства
Makarov: atomic properties -
2 peso
m.1 weight.tiene un kilo de peso it weighs a kilopeso atómico atomic weightpeso bruto gross weightpeso ligero lightweightpeso medio middleweightpeso molecular molecular weightpeso mosca flyweightpeso muerto dead weightpeso neto net weightpeso pesado heavyweight2 weight (fuerza, influencia).su palabra tiene mucho peso his word carries a lot of weight3 burden.el peso de la culpabilidad the burden of guiltquitarse un peso de encima to take a weight off one's mind4 scales (balanza).5 shot (sport).lanzamiento de peso shot put6 peso (moneda).pres.indicat.1st person singular (yo) present indicative of spanish verb: pesar.* * *1 (gen) weight3 (carga) load, burden\de peso (pesado) heavy 2 (importante) important 3 (influyente) influential 4 (convincente) strong, powerfulcaerse por su propio peso to be self-evident, be obvioushacer el peso familiar to convinceganar peso to put on weight, gain weightperder peso to lose weightquitar un peso de encima de alguien to take a weight off somebody's mindpeso bruto gross weightpeso gallo bantamweightpeso ligero lightweightpeso neto net weightpeso pesado heavyweightpeso pluma featherweight* * *noun m.1) weight2) burden3) importance* * *SM1) (Fís, Téc) weight¿cuál es tu peso? — how much do you weigh?
un vehículo de mucho/poco peso — a heavy/light vehicle
•
las telas se venden al peso — the fabrics are sold by weight•
no dar el peso — [al pesarse] [boxeador] not to make the weight; [recién nacido] to be below normal weight, be underweight; [en una categoría] not to make the grade, not come up to scratchese escultor no da el peso — that sculptor doesn't make the grade o come up to scratch
•
sostener algo en peso — to support the full weight of sth•
falto de peso — underweight•
ganar peso — to put on weight•
perder peso — to lose weight- valer su peso en oropeso específico — (lit) specific gravity; (fig) influence
peso molecular — (Quím) molecular weight
peso muerto — (Náut) (tb fig) dead weight
2) (=acción)3) [de culpa, responsabilidad] weightme quitarías un buen peso de encima — it would be a weight off my mind, you would take a weight off my mind
4) (=importancia) weight•
de peso — [persona] influential; [argumento] weighty, forcefulrazones de peso — good o sound reasons
5) (=balanza) scales pl6) (Med) heaviness7) (Dep)a) Esp (Atletismo) shotb) (Halterofilia)c) [Boxeo] weightpeso completo — CAm, Méx, Ven heavyweight
peso ligero, peso liviano — Chile, Ven lightweight
peso medio fuerte — light heavyweight, cruiserweight
8) (Econ) peso* * *1)a) (Fís, Tec) weightperder/ganar peso — to lose weight/gain o put on weight
tomarle el peso a algo — to weigh something up
b)2)a) ( carga) weight, burdenquitarle un peso de encima a alguien — to take a load o a weight off somebody's mind
me he quitado un buen peso de encima — that's a real load o weight off my mind
b) ( influencia) weightlas asociaciones de mayor peso — the most important associations, the associations which carry the most weight
c)3) (Dep)a) (Esp) ( en atletismo) shotlanzamiento de peso — shot-put, shot-putting
b) (Esp) ( en halterofilia) weightc) ( en boxeo) weight4) ( báscula) scales (pl); ( de balanza) (Chi) weight5) (Fin) peso ( unit of currency in many Latin American countries)no tiene un peso — he doesn't have a cent o penny
* * *1)a) (Fís, Tec) weightperder/ganar peso — to lose weight/gain o put on weight
tomarle el peso a algo — to weigh something up
b)2)a) ( carga) weight, burdenquitarle un peso de encima a alguien — to take a load o a weight off somebody's mind
me he quitado un buen peso de encima — that's a real load o weight off my mind
b) ( influencia) weightlas asociaciones de mayor peso — the most important associations, the associations which carry the most weight
c)3) (Dep)a) (Esp) ( en atletismo) shotlanzamiento de peso — shot-put, shot-putting
b) (Esp) ( en halterofilia) weightc) ( en boxeo) weight4) ( báscula) scales (pl); ( de balanza) (Chi) weight5) (Fin) peso ( unit of currency in many Latin American countries)no tiene un peso — he doesn't have a cent o penny
* * *peso11 = balance, weighing scales, scales.Ex: Officials are hopeful that all delivery men in the city will be equipped with balances within a month.
Ex: Weighing scales are also sometimes used to measure force rather than mass.Ex: It indicates the changes and limitations which fill the other pan of the scales and which are frequently only discovered by bitter experience.* peso de baño = bathroom scales.peso22 = burden, load, weight, toll, term weight, body weight.Ex: In information retrieval applications it was more usual for one organisation to carry most of the burden of development of the system, and then to market it to others.
Ex: By designing the floors to carry a superimposed live load of 6.5 kN/m2, it is easy to move bookshelves, reader places and other library functions to any part of the building.Ex: The vocabulary used in conjunction with PRECIS is split in two sections, one part for Entities (or things) and the other for Attributes (properties of things, for example colour, weight; activities of things, for example flow, and properties of activities, for example, slow, turbulent).Ex: Quite apart from the great toll of unasked questions, any hint of mutual antipathy between enquirer and librarian is fatal to the reference interview.Ex: Applications of these methods facilitate more effective assignment of term weights to index terms within documents and may assist searchers in the selection of search terms.Ex: The effect of Christmas time on body weight development was investigated in 46 obese patients.* aliviar a Alguien del peso de = relieve + Nombre + of the burden of.* aliviar de un peso a = relieve + the burden (on/from).* aumento de peso = weight gain.* castigar con todo el peso de la ley = punish + to the full extent of the law.* coger peso = put on + weight, gain + weight.* con todo el peso de la ley = to the full extent of the law.* control del peso = weight control.* de peso = weighty, of consequence, meaty [meatier -comp., meatiest -sup.].* de poco peso = pat, feeble.* exceso de peso = overweight.* falta de peso = underweight.* ganar peso = put on + weight, gain + weight.* gran peso = heavy weight.* hundirse bajo el peso de = collapse under + the weight of.* hundirse por el peso = bog down.* hundirse por su propio peso = sink under + its own weight.* ley de pesos y medidas = weights and measures act.* ligero de peso = lightweight [light-weight].* llevar el peso = undertake + burden.* perder peso = lose + weight.* pérdida de peso = weight loss.* peso al nacer = birthweight.* peso atómico = atomic weight.* peso de la prueba, el = burden of proof, the.* peso de la responsabilidad, el = burden of responsibility, the.* peso de nacimiento = birthweight.* peso específico = weight, specific gravity.* peso molecular = molecular weight.* peso muerto = dead weight.* peso pesado = heavy weight [heavyweight], big wheel, big shot, big noise, big wig, fat cat.* por debajo del peso normal = underweight.* problema de peso = weight problem.* quitarse un (buen) peso de encima = get + a (real) weight off + Posesivo + chest.* quitarse un peso de encima = take + a weight off + Posesivo + mind, take + a load off + Posesivo + mind.* quitar un peso de encima = remove + burden from shoulders.* quitar un peso de encima a Alguien = lift + a weight off + Posesivo + shoulders.* se cae de su peso que = it goes without saying that.* soportar el peso de Algo = carry + the burden.* soportar un peso = take + load.* tener que cargar con el peso de = be burdened with.* tener que cargar con el peso de la tradición = be burdened with + tradition.* todo el peso de la ley = full force of the law, the.* vector de peso específico = weighted vector.* * *sistema de pesos y medidas system of weights and measuresa ti no te conviene levantar esos pesos you shouldn't lift (heavy) weights like thatperder/ganar peso to lose/gain o put on weightvive preocupada por el peso she worries about her weight all the timetomarle el peso a algo to weigh sth upvaler su peso en oro to be worth one's weight in gold2al peso ‹venta/compra› by weight;‹vender/comprar› by weightCompuestos:atomic weightgross weightsu peso específico en la empresa es bien sabido por todos everyone knows he carries a lot of weight in the companymolecular weightdeadweightnet weightB1 (carga, pesadumbre) weight, burdenestá abrumado por el peso de tanta responsabilidad he's overwhelmed by the burden of so much responsibilitylleva el peso de la empresa he carries the burden of responsibility for the companyel peso de la prueba recae sobre el fiscal the onus of proof lies with the prosecutionquitarle un peso de encima a algn to take a load o a weight off sb's mindme he quitado un buen peso de encima that's a real load o weight off my mind2 (importancia, influencia) weightlas asociaciones de mayor peso the most important associations, the associations which carry the most weightsu papel tiene poco peso her role is fairly minorla agricultura es una actividad que tiene poco peso en la economía agriculture does not play a very important role in the economyla Iglesia ejerce un peso moral muy fuerte en nuestra sociedad the Church exercises a very strong moral influence in our societytodo el peso de la ley the full weight of the law3de peso ‹argumento› strong, weighty;‹razón› forcefultiene amistades de peso en la dirección she has influential friends on the boardC ( Dep)1 (en atletismo) shotlanzamiento de peso shot-put, shot-putting2 (en halterofilia) weightlevantamiento de pesos weightlifting3 (en boxeo) weightCompuestos:bantamweight● peso ligero or livianolightweight● peso medio or medianomiddleweightflyweight( Dep) heavyweightun peso pesado de la literatura/política a literary/political heavyweightfeatherweightwelterweightD1 (báscula) scales (pl)2 ( Chi) (de una balanza) weightE ( Fin) peso ( unit of currency in many Latin American countries)nunca tiene un peso he never has a cent o penny* * *
Del verbo pesar: ( conjugate pesar)
peso es:
1ª persona singular (yo) presente indicativo
pesó es:
3ª persona singular (él/ella/usted) pretérito indicativo
Multiple Entries:
pesar
peso
pesar 1 sustantivo masculino
1
a peso mío or muy a mi peso much to my regret
2
a peso de todo in spite of o despite everything;
a pesar de que even though
pesar 2 ( conjugate pesar) verbo intransitivo
1 [paquete/maleta] to be heavy;
no me pesa it's not heavy
2 ( causar arrepentimiento) (+ me/te/le etc):
me pesa haberlo ofendido I'm very sorry I offended him
3
pese a que even though;
mal que me/le pese whether I like/he likes it or not
verbo transitivo
‹ manzanas› to weigh (out)
pesarse verbo pronominal ( refl) to weigh oneself
peso sustantivo masculino
1a) (Fís, Tec) weight;◊ ganar/perder peso to gain o put on/lose weight;
peso bruto/neto gross/net weightb)
2
◊ quitarle un peso de encima a algn to take a load o a weight off sb's mind
c)
‹ razón› forceful
3 (Dep)
◊ peso ligero/mosca/pesado/pluma lightweight/flyweight/heavyweight/featherweight
4 ( báscula) scales (pl)
5 (Fin) peso ( unit of currency in many Latin American countries);◊ no tiene un peso he doesn't have a cent o penny
pesar
I verbo intransitivo
1 (tener peso físico) to weigh: esa carne pesa dos kilos, that meat weighs two kilos
2 (tener peso psíquico) to have influence: sus opiniones aún pesan en el grupo, his opinions still carry weight in the group
3 (causar arrepentimiento, dolor) to grieve: me pesa no haber ido con vosotros, I regret not having gone with you
II vtr (determinar un peso) to weigh
III sustantivo masculino
1 (pena, pesadumbre) sorrow, grief
2 (remordimiento) regret
♦ Locuciones: a pesar de, in spite of
a pesar de que, although ➣ Ver nota en aunque
peso sustantivo masculino
1 weight
ganar/perder peso, to put on/lose weight
Quím Fís peso específico, specific gravity
2 (carga, preocupación) weight, burden
3 (influencia) importance
4 (utensilio) scales
♦ Locuciones: quitarse un peso de encima, to take a load off one's mind
de peso, (una persona) influential, (un argumento) convincing
' peso' also found in these entries:
Spanish:
adelgazar
- aligerar
- bruta
- bruto
- carga
- cargar
- exceso
- kilo
- lanzamiento
- levedad
- ligera
- ligero
- mantener
- medida
- neta
- neto
- onza
- pesar
- ponderar
- según
- sopesar
- soportar
- sostener
- sustentar
- tara
- vencerse
- aguantar
- arroba
- aumentar
- aumento
- cargado
- controlar
- convertir
- distribuir
- equilibrar
- estacionar
- exceder
- gordura
- igual
- justo
- lanzador
- levantar
- mínimo
- moneda
- perder
- propina
- rebajar
- unidad
English:
avoid
- back
- bear
- compelling
- dead weight
- feather weight
- flyweight
- gain
- heaviness
- heavyweight
- hold
- lb
- lift
- lighten
- lightweight
- load
- middleweight
- outweigh
- overweight
- pound
- quibble
- shed
- shot
- stand
- sustain
- weight
- weight-watching
- welterweight
- clout
- dead
- excess
- hundred
- lose
- over
- peso
- put
- slim
- stone
- strain
- strong
- support
- under
- weighty
* * *peso nm1. [en general] weight;tiene un kilo de peso it weighs a kilo;ganar/perder peso to gain/lose weight;vender algo al peso to sell sth by weight;de peso [razones] weighty, sound;[persona] influential;caer por su propio peso to be self-evident;pagar algo a peso de oro to pay a fortune for sth;valer su peso en oro to be worth its/his/ etc weight in goldpeso atómico atomic weight;peso bruto gross weight;Fís peso específico relative density, specific gravity; Figtiene mucho peso específico he carries a lot of weight;Quím peso molar molar weight;peso molecular molecular weight;peso muerto dead weight;peso neto net weight2. [sensación] heavy feeling;siento peso en las piernas my legs feel heavy3. [fuerza, influencia] weight;su palabra tiene mucho peso his word carries a lot of weight;el peso de sus argumentos está fuera de duda there is no disputing the force of her arguments;el vicepresidente ejerce mucho peso en la organización the vice president carries a lot of weight in the organization4. [carga, preocupación] burden;el peso de la culpabilidad the burden of guilt;quitarse un peso de encima to take a weight off one's mind5. [balanza] scales6. [moneda] peso7. Dep shot;lanzamiento de peso shot put8. [en boxeo] weightpeso gallo bantamweight;peso ligero lightweight;peso medio middleweight;peso mosca flyweight;también Fig peso pesado heavyweight;peso pluma featherweight;peso semiligero light middleweight;peso semipesado light heavyweight;peso welter welterweightno tengo un peso I'm broke;¿cuánto te costó? – no mucho, dos pesos how much did it cost you? – not much o next to nothing* * *m1 weight;ganar peso put on o gain weight;perder peso lose weight; fig become less important;de peso fig weighty;por su propio peso it goes without saying;se me quitó un peso de encima it took a real load off my mind2 FIN peso* * *peso nm1) : weight, heaviness2) : burden, responsibility3) : weight (in sports)4) báscula: scales pl5) : peso* * *peso n1. (en general) weighttiene cinco kilos de peso it is five kilos in weight / it weighs five kilos2. (deporte) shot -
3 Symbol
When a symbol stands for a class of objects or events with common properties, we say that it refers to a concept. (Hilgard, 1957, p. 315)The notion of a discrete atomic symbol is the basis of all formal understanding. Indeed, it is the basis of all systems of thought, expression or calculation for which a notation is available.... No one has succeeded in defining any other type of atom from which formal understanding can be derived. Small wonder, then, that many of us are reluctant to dispense with this foundation in cognitive psychology under frequent exhortations to accept symbols with such varied intrinsic properties as continuous or analogue properties. (Pylyshyn, 1984, p. 51)Historical dictionary of quotations in cognitive science > Symbol
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4 относиться к
. все, кого это касается; к ним относится; касаться; не относящийся к; охватывать; падать на; равным образом; распространяться на; справедлив для; это особенно относится к случаям, когда когда•Evidently Einstein's restriction should not apply to this wave.
•The laboratory rules are concerned with noncritical operations.
•The following rules of centrifugal machines hold true for all centrifugal pumps.
•Henry's Law refers only to the effect of pressure.
•Faraday's laws relate to the electrolysis of solutions and fused salts.
•The term "computer-aided engineering" refers to a "total" system concept, in which...
•The result is only appropriate for a finite time interval which is undetermined as yet.
•The above example pertains to the diffusion of liquids.
•The result applies (or refers, or relates) to mass transfer from plate to fluid, or fluid to plate.
•The book deals with (or treats on) distillation.
•Another question has to do with diseases arising from dietary deficiencies.
•This will be true for (or of) very high electric fields.
•Lines la and 2a apply to a 47-microfarad, 35-volt polar capacitor.
•The term caisson covers a wide range of foundation structures.
•Similar considerations hold for emitting molecules.
•This is particularly true in humid regions.
•These properties are not pertinent to the problem at hand.
•This is especially the case with wide armature cores.
•The differences are a matter of degree rather than of type.
•These terms are related to certain atomic groupings.
•The discoveries concern the properties of electric charges.
•This discussion has so far concerned itself with the experimental results obtained.
•The common names isobutane and isopentane apply to those isomers having...
•The third factor concerns the bulky nature of...
•The most significant developments of that period centred around the field of communications.
II•The basic principle of the device dates from (or back to) the 15th century.
•The first trials go back to 1912.
•These mummies are dated to 2800 B.C.
•Most abrasive materials fall in the region at the top of the scale.
•All the above forces fall in(to) this category.
•All forms of anemia fall into two main types.
•The discussion of pseudovectors belongs to the domain of the tensor calculus.
IV•Mathematical biophysics stands in the same relation to experimental biology as mathematical physics to experimental physics.
Русско-английский научно-технический словарь переводчика > относиться к
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5 прочностные свойства
1) Engineering: structural behaviour2) Construction: mechanical properties, mechanical strength characteristics3) Oil: strength properties, structural behavior4) Atomic energy: structural behaviorsУниверсальный русско-английский словарь > прочностные свойства
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6 peso2
2 = burden, load, weight, toll, term weight, body weight.Ex. In information retrieval applications it was more usual for one organisation to carry most of the burden of development of the system, and then to market it to others.Ex. By designing the floors to carry a superimposed live load of 6.5 kN/m2, it is easy to move bookshelves, reader places and other library functions to any part of the building.Ex. The vocabulary used in conjunction with PRECIS is split in two sections, one part for Entities (or things) and the other for Attributes (properties of things, for example colour, weight; activities of things, for example flow, and properties of activities, for example, slow, turbulent).Ex. Quite apart from the great toll of unasked questions, any hint of mutual antipathy between enquirer and librarian is fatal to the reference interview.Ex. Applications of these methods facilitate more effective assignment of term weights to index terms within documents and may assist searchers in the selection of search terms.Ex. The effect of Christmas time on body weight development was investigated in 46 obese patients.----* aliviar a Alguien del peso de = relieve + Nombre + of the burden of.* aliviar de un peso a = relieve + the burden (on/from).* aumento de peso = weight gain.* castigar con todo el peso de la ley = punish + to the full extent of the law.* coger peso = put on + weight, gain + weight.* con todo el peso de la ley = to the full extent of the law.* control del peso = weight control.* de peso = weighty, of consequence, meaty [meatier -comp., meatiest -sup.].* de poco peso = pat, feeble.* exceso de peso = overweight.* falta de peso = underweight.* ganar peso = put on + weight, gain + weight.* gran peso = heavy weight.* hundirse bajo el peso de = collapse under + the weight of.* hundirse por el peso = bog down.* hundirse por su propio peso = sink under + its own weight.* ley de pesos y medidas = weights and measures act.* ligero de peso = lightweight [light-weight].* llevar el peso = undertake + burden.* perder peso = lose + weight.* pérdida de peso = weight loss.* peso al nacer = birthweight.* peso atómico = atomic weight.* peso de la prueba, el = burden of proof, the.* peso de la responsabilidad, el = burden of responsibility, the.* peso de nacimiento = birthweight.* peso específico = weight, specific gravity.* peso molecular = molecular weight.* peso muerto = dead weight.* peso pesado = heavy weight [heavyweight], big wheel, big shot, big noise, big wig, fat cat.* por debajo del peso normal = underweight.* problema de peso = weight problem.* quitarse un (buen) peso de encima = get + a (real) weight off + Posesivo + chest.* quitarse un peso de encima = take + a weight off + Posesivo + mind, take + a load off + Posesivo + mind.* quitar un peso de encima = remove + burden from shoulders.* quitar un peso de encima a Alguien = lift + a weight off + Posesivo + shoulders.* se cae de su peso que = it goes without saying that.* soportar el peso de Algo = carry + the burden.* soportar un peso = take + load.* tener que cargar con el peso de = be burdened with.* tener que cargar con el peso de la tradición = be burdened with + tradition.* todo el peso de la ley = full force of the law, the.* vector de peso específico = weighted vector. -
7 radiación
f.radiation, glow.* * *1 radiation* * *noun f.* * *SF1) (Fís) radiation2) (Radio) broadcasting* * *femenino radiation* * *= radiation, irradiation.Ex. A radiograph is a photograph produced by the passage of radiation, such as X rays, gamma rays, or neutrons, through an opaque object.Ex. The physical properties of gum arabic was not significantly altered by the electron beam irradiation.----* fuente de radiación = radiation source.* química para la radiación = radiation chemistry.* radiación nuclear = nuclear fallout, fallout.* radiación solar = solar radiation, solar gain.* * *femenino radiation* * *= radiation, irradiation.Ex: A radiograph is a photograph produced by the passage of radiation, such as X rays, gamma rays, or neutrons, through an opaque object.
Ex: The physical properties of gum arabic was not significantly altered by the electron beam irradiation.* fuente de radiación = radiation source.* química para la radiación = radiation chemistry.* radiación nuclear = nuclear fallout, fallout.* radiación solar = solar radiation, solar gain.* * *radiationCompuestos:cosmic radiationionizing radiationatomic o nuclear radiationsolar radiation* * *
radiación sustantivo femenino
radiation
radiación sustantivo femenino radiation
' radiación' also found in these entries:
English:
radiation
* * *radiación nfradiationradiación alfa alpha radiation;radiación beta beta radiation;Astron radiación cósmica cosmic radiation; Astron radiación de fondo background radiation;radiación gamma gamma radiation;radiación nuclear nuclear radiation;radiación solar solar radiation;radiación ultravioleta ultraviolet radiation* * *f radiation;de baja radiación low-radiation* * ** * *radiación n radiation -
8 определять
•Magnitude of the principal stresses controls (or governs) the degree of birefringence.
•Covalent bonds are responsible for atomic combinations in many elements.
•θ is the angle defining the position of the rotor with respect to the stator.
•These elements define the geometry of the orbit.
•The take-off condition dictates (or determines, or defines) the amount of wing area required for an airplane.
•The armature of the rudder motor dictates the direction in which the rudder motor rotates.
•The rate at which a furnace can melt scrap governs the rate at which it can accommodate successive portions of the charge.
•These equations govern simple waves.
•It is the naval architect who settles (or decides on) the form of the vessel.
•Three points determine a circle.
•The geometry of the small ring compounds fixes their configuration.
•The equation specifies the topography of the potential surface.
II•These variables are difficult to appraise accurately.
•The cost of steam generation required by the power plant can be arrived at (or defined) from Fig. 2.
•A number of coils were rolled to assess the performance of the controller.
•The pressure was determined (or deduced) from the weight of steam and...
•Reserves are estimated (or evaluated) at 100,000,000 bbl.
•To assess the distribution and level of the pollutant...
•This knowledge enables the analyst to gauge the meaning and reliability of the results obtained.
•Information about temperatures below the surface can be inferred from the magnetic properties of rocks.
•The adequacy of the global supply can be gauged through a simple analysis of the per capita need for water.
см. классифицироватьIV•If the wavelength composition of the light is known, its colour can be specified (or determined, or identified).
•Identify the two chemicals in the equation for which...
•The closer you want to pinpoint the exact orbit, the more corrections you must make.
Русско-английский научно-технический словарь переводчика > определять
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9 проявляться
•Most of the oxygen, nitrogen and sulphur in the coal appear as water, ammonia, and hydrogen sulphide in the gaseous products.
•When atomic energy is released quickly in a bomb, it manifests itself as heat, shock wave,...
•Radiation damage of the nitrilites would be reflected by changes in the rate of fermentation.
•The mass effect shows itself as a slight difference of the terms of...
•This reduced adhesion shows up most vividly when...
•External corrosion shows (up) as rusty or pitted spots on the metal.
•These antibodies are too weak to reveal themselves in test tube reaction.
•The relative scarcity of volatile elements in eucretes ( a type of meteorites) shows up in the composition of...
••This form of the disease can be manifested by a wide range of signs and symptoms. This uncertainty makes itself evident in the range of values found for...
••A number of interesting properties emerge in the vicinity of the critical point.
Русско-английский научно-технический словарь переводчика > проявляться
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10 атомные и молекулярные свойства
Makarov: atomic and molecular propertiesУниверсальный русско-английский словарь > атомные и молекулярные свойства
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11 корреляции между атомными и молекулярными свойствами
Универсальный русско-английский словарь > корреляции между атомными и молекулярными свойствами
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12 крайне желательно, чтобы
Крайне желательно, чтобыIt is highly desirable that these properties should be attainable with the simplest possible heat-treatment.It would be highly desirable if criteria adopted could always be formulated at the atomic level.Русско-английский научно-технический словарь переводчика > крайне желательно, чтобы
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13 isomerismo
m.isomerism, the condition of having different properties, but the same molecular composition, or same atomic weight. (Chemistry) -
14 Crookes, Sir William
SUBJECT AREA: Electricity[br]b. 17 June 1832 London, Englandd. 4 April 1919 London, England[br]English chemist and physicist who carried out studies of electrical discharges and cathode rays in rarefied gases, leading to the development of the cathode ray tube; discoverer of the element thallium and the principle of the Crookes radiometer.[br]Crookes entered the Royal College of Chemistry at the age of 15, and from 1850 to 1854 held the appointment of Assistant at the college. In 1854 he became Superintendent of the Meteorological Department at the Radcliffe Observatory in Oxford. He moved to a post at the College of Science in Chester the following year. Soon after this he inherited a large fortune and set up his own private laboratory in London. There he studied the nature of electrical discharges in gases at low pressure and discovered the dark space (later named after him) that surrounds the negative electrode, or cathode. He also established that the rays produced in the process (subsequently shown by J.J.Thompson to be a stream of electrons) not only travelled in straight lines, but were also capable of producing heat and/or light upon impact with suitable anode materials. Using a variety of new methods to investigate these "cathode" rays, he applied them to the spectral analysis of compounds of selenium and, as a result, in 1861 he discovered the element thallium, finally establishing its atomic weight in 1873. Following his discovery of thallium, he became involved in two main lines of research: the properties of rarified gases, and the investigation of the elements of the "rare earths". It was also during these experiments that he discovered the principle of the Crookes radiometer, a device in which light is converted into rotational motion and which used to be found frequently in the shop windows of English opticians. Also among the fruits of this work were the Crookes tubes and the development of spectacle lenses with differential ranges of radiational absorption. In the 1870s he became interested in spiritualism and acquired a reputation for his studies of psychic phenomena, but at the turn of the century he returned to traditional scientific investigations. In 1892 he wrote about the possibility of wireless telegraphy. His work in the field of radioactivity led to the invention of the spinthariscope, an early type of detector of alpha particles. In 1900 he undertook investigations into uranium which led to the study of scintillation, an important tool in the study of radioactivity.While the theoretical basis of his work has not stood the test of time, his material discoveries, observations and investigations of new facts formed a basis on which others such as J.J. Thomson were to develop subatomic theory. His later involvement in the investigation of spiritualism led to much criticism, but could be justified on the basis of a belief in the duty to investigate all phenomena.[br]Principal Honours and DistinctionsKnighted 1897. Order of Merit 1910. FRS 1863. President, Royal Society 1913–15. Honorary LLD Birmingham. Honorary DSc Oxon, Cambridge, Sheffield, Durham, Ireland and Cape of Good Hope.Bibliography1874, On Attraction and Repulsion Resulting from Radiation.1874, "Researches in the phenomenon of spiritualism", Society of Metaphysics; reprinted in facsimile, 1986.For many years he was also Proprietor and Editor of Chemical News.Further ReadingE.E.Fournier D'Albe, 1923, Life of Sir William Crookes. Who Was Who II, 1916–28, London: A. \& C. Black. T.I.Williams, 1969, A Biographical Dictionary of Scientists. See also Braun, Karl Ferdinand.KF / MG -
15 Davy, Sir Humphry
[br]b. 17 December 1778 Penzance, Cornwall, Englandd. 29 May 1829 Geneva, Switzerland[br]English chemist, discoverer of the alkali and alkaline earth metals and the halogens, inventor of the miner's safety lamp.[br]Educated at the Latin School at Penzance and from 1792 at Truro Grammar School, Davy was apprenticed to a surgeon in Penzance. In 1797 he began to teach himself chemistry by reading, among other works, Lavoisier's elementary treatise on chemistry. In 1798 Dr Thomas Beddoes of Bristol engaged him as assistant in setting up his Pneumatic Institution to pioneer the medical application of the newly discovered gases, especially oxygen.In 1799 he discovered the anaesthetic properties of nitrous oxide, discovered not long before by the chemist Joseph Priestley. He also noted its intoxicating qualities, on account of which it was dubbed "laughing-gas". Two years later Count Rumford, founder of the Royal Institution in 1800, appointed Davy Assistant Lecturer, and the following year Professor. His lecturing ability soon began to attract large audiences, making science both popular and fashionable.Davy was stimulated by Volta's invention of the voltaic pile, or electric battery, to construct one for himself in 1800. That enabled him to embark on the researches into electrochemistry by which is chiefly known. In 1807 he tried decomposing caustic soda and caustic potash, hitherto regarded as elements, by electrolysis and obtained the metals sodium and potassium. He went on to discover the metals barium, strontium, calcium and magnesium by the same means. Next, he turned his attention to chlorine, which was then regarded as an oxide in accordance with Lavoisier's theory that oxygen was the essential component of acids; Davy failed to decompose it, however, even with the aid of electricity and concluded that it was an element, thus disproving Lavoisier's view of the nature of acids. In 1812 Davy published his Elements of Chemical Philosophy, in which he presented his chemical ideas without, however, committing himself to the atomic theory, recently advanced by John Dalton.In 1813 Davy engaged Faraday as Assistant, perhaps his greatest service to science. In April 1815 Davy was asked to assist in the development of a miner's lamp which could be safely used in a firedamp (methane) laden atmosphere. The "Davy lamp", which emerged in January 1816, had its flame completely surrounded by a fine wire mesh; George Stephenson's lamp, based on a similar principle, had been introduced into the Northumberland pits several months earlier, and a bitter controversy as to priority of invention ensued, but it was Davy who was awarded the prize for inventing a successful safety lamp.In 1824 Davy was the first to suggest the possibility of conferring cathodic protection to the copper bottoms of naval vessels by the use of sacrificial electrodes. Zinc and iron were found to be equally effective in inhibiting corrosion, although the scheme was later abandoned when it was found that ships protected in this way were rapidly fouled by weeds and barnacles.[br]Principal Honours and DistinctionsKnighted 1812. FRS 1803; President, Royal Society 1820. Royal Society Copley Medal 1805.Bibliography1812, Elements of Chemical Philosophy.1839–40, The Collected Works of Sir Humphry Davy, 9 vols, ed. John Davy, London.Further ReadingJ.Davy, 1836, Memoirs of the Life of Sir Humphry Davy, London (a classic biography). J.A.Paris, 1831, The Life of Sir Humphry Davy, London (a classic biography). H.Hartley, 1967, Humphry Davy, London (a more recent biography).J.Z.Fullmer, 1969, Cambridge, Mass, (a bibliography of Davy's works).ASD
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