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Optical density
| Glossary Of Laser Terminology |
- A logarithmic expression for the attenuation produced by an attenuating medium, such as an eye protection filter.
- A logarithmic measure of the power attenuation, or the refractive index
- Оптическая плотность. см. absorbance — спектральная поглощатёльная способность.
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Density, английский
- Stand density
- As applied to timber, density is the mass of wood substance and moisture enclosed within a piece expressed in kilograms per cubic meter. as the mass will vary dependant on the amount of moisture in the piece, density is often expressed at a specified mois
- The weight per unit volume of a substance.
- The ability of a material to absorb light; the darker it is, the higher the density.
- The mass of a unit volume of a substance. its numerical value varies with the units used.
- Плотность
- Плотность; концентрация; удельный вес
- A measure of how tightly packed the atoms of a substance are. measured in grams per cubic centimeter. varies by the mineral or substance. for example, gold has a high density, while quartz has a low density. see also "specific gravity."
- The weight of cargo per cubic foot or other unit.
- In general terms, the measure of the light-gathering power of silver or dye deposits in film. also, the buildup of silver that creates the image in film and paper. a "dense" negative or slide is more opaque than a "thin" one. there is an ideal density for film, one that yields good prints or slides; too little density usually means that the film was underexposed (or underdeveloped), too much means its been overexposed (or overdeveloped).
- As usually applied to wood of normal cellular form, density is the mass per unit volume of wood substance enclosed within the boundary surfaces of a wood-‑plus-‑voids complex
- (1) the weight of a material per unit volume; (2) a measurement of the transparency of a medium, as related to light transmission.
- The degree of aggregation; the quantity of any entity distributed over an area per unit of areal measure, e.g., persons per acre, families per acre, or dwelling units per square mile.
- Плотность вязания
- The weight of a body in comparison with its bulk.
- The weight of water divided by the amount of space it occupies. this is determined by the combined effect of temperature, salinity, and atmospheric pressure. cold, salt-laden water is denser than warmer, fresher water and will sink below it. see density levels.
- The ratio of the mass of any volume of a substance to the mass of an equal volume of a standard substance. for example, water is used as the standard substance to which the ratio of a quantity of a drill mud is compared.
- Having the quality of being dense, hard, or compact.
- Плотность; интенсивность; степень
- In relation to population, the number of individuals in a certain amount of space. absolute d.: number of organisms over unit of volume [1/m3]. relative d.: comparison of relative density, e.g. here more, there less.
- Mass per unit volume usually expressed as grams per cubic centimeter (g/cc). also known as specific gravity.
- The degree of darkness of an image. deny (pn)
- The mass per unit volume (usually expressed as grams per cubic centimeter). (also see specific gravity.) dent: on a loom, the space between the wires of a reed. deregistering (crimp): process of disordering or disaligning the crimp in a tow band to produce bulk. (also see threaded-roll process.)
- Quantity or mass per unit volume, unit area or unit length. energy density is the amount of energy per unit volume or mass (for example, the heating value of a litre of oil). power density is typically understood as the capacity deliverable of solar, wind, biomass, hydropower or ocean power per unit area (watts/m). for batteries the capacity per unit weight (watts/kg) is used. direct solar energy - see solar energy
- The mass of the substance per unit volume, usually specified at standard temperature and pressure
- The mass of liquid per unit of a substance at 15°c.
- Mass per unit volume.
- (1) in radiographic testing, degree of x-ray film darkness as a result of exposure as measured with a densitometer. (2) material property of mass per unit volume.
- Material property of mass per unit volume.
- Mass per unit volume, measured in kilograms per cubic meter (kg·m–3).
- Reference to the weight of foam used for seat and back cushions; either low density or high density.
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Density, английский
- Stand density
- As applied to timber, density is the mass of wood substance and moisture enclosed within a piece expressed in kilograms per cubic meter. as the mass will vary dependant on the amount of moisture in the piece, density is often expressed at a specified mois
- The weight per unit volume of a substance.
- The ability of a material to absorb light; the darker it is, the higher the density.
- The mass of a unit volume of a substance. its numerical value varies with the units used.
- Плотность
- Плотность; концентрация; удельный вес
- A measure of how tightly packed the atoms of a substance are. measured in grams per cubic centimeter. varies by the mineral or substance. for example, gold has a high density, while quartz has a low density. see also "specific gravity."
- The weight of cargo per cubic foot or other unit.
- In general terms, the measure of the light-gathering power of silver or dye deposits in film. also, the buildup of silver that creates the image in film and paper. a "dense" negative or slide is more opaque than a "thin" one. there is an ideal density for film, one that yields good prints or slides; too little density usually means that the film was underexposed (or underdeveloped), too much means its been overexposed (or overdeveloped).
- As usually applied to wood of normal cellular form, density is the mass per unit volume of wood substance enclosed within the boundary surfaces of a wood-‑plus-‑voids complex
- (1) the weight of a material per unit volume; (2) a measurement of the transparency of a medium, as related to light transmission.
- The degree of aggregation; the quantity of any entity distributed over an area per unit of areal measure, e.g., persons per acre, families per acre, or dwelling units per square mile.
- Плотность вязания
- The weight of a body in comparison with its bulk.
- The weight of water divided by the amount of space it occupies. this is determined by the combined effect of temperature, salinity, and atmospheric pressure. cold, salt-laden water is denser than warmer, fresher water and will sink below it. see density levels.
- The ratio of the mass of any volume of a substance to the mass of an equal volume of a standard substance. for example, water is used as the standard substance to which the ratio of a quantity of a drill mud is compared.
- Having the quality of being dense, hard, or compact.
- Плотность; интенсивность; степень
- In relation to population, the number of individuals in a certain amount of space. absolute d.: number of organisms over unit of volume [1/m3]. relative d.: comparison of relative density, e.g. here more, there less.
- Mass per unit volume usually expressed as grams per cubic centimeter (g/cc). also known as specific gravity.
- The degree of darkness of an image. deny (pn)
- The mass per unit volume (usually expressed as grams per cubic centimeter). (also see specific gravity.) dent: on a loom, the space between the wires of a reed. deregistering (crimp): process of disordering or disaligning the crimp in a tow band to produce bulk. (also see threaded-roll process.)
- Quantity or mass per unit volume, unit area or unit length. energy density is the amount of energy per unit volume or mass (for example, the heating value of a litre of oil). power density is typically understood as the capacity deliverable of solar, wind, biomass, hydropower or ocean power per unit area (watts/m). for batteries the capacity per unit weight (watts/kg) is used. direct solar energy - see solar energy
- The mass of the substance per unit volume, usually specified at standard temperature and pressure
- The mass of liquid per unit of a substance at 15°c.
- Mass per unit volume.
- (1) in radiographic testing, degree of x-ray film darkness as a result of exposure as measured with a densitometer. (2) material property of mass per unit volume.
- Material property of mass per unit volume.
- Mass per unit volume, measured in kilograms per cubic meter (kg·m–3).
- Reference to the weight of foam used for seat and back cushions; either low density or high density.
Density, французский
Measured in grams per cubic centimeter (or kilograms per liter); the density of water is 1.0; iron is 7.9; lead is 11.3.
Density (d), английский
By definition, the log (1/t) where t is transparency. the value of d depends
Density (in situ), английский
Density (swollen), английский
Density -, английский
Плотностный каротаж
Density altitude, английский
Высота по плотности
Density apparent, английский
Density at relieving conditions, английский
Density change, английский
Density charge, английский
Density comparison strip (rt), английский
Alternative term for step-wedge comparison film.
Density contrast, английский
Density control, английский
The control of the density of concrete in field construction to ensure that specified values, as determined by standard tests, are obtained.
Density current, английский
See turbidity current.
Density currents, pi, английский
Плотностные потоки
Density function, английский
Функция плотности
Density gradient, английский
- Градиент плотности; градиент концентрации
- The change in density of a radiographic film at a particular film density per unit change in the logarithm of the exposure received by the film. the maximum density gradient of a film is usually called gamma.
Density identification area, английский
Density levels, английский
Ocean waters can be divided into three layers, depending on their density. at the top is the surface or mixed zone. this is unstable due to atmospheric interference. for example, evaporation could increase its salinity, or a cold front could reduce its temperature. in the middle is a transition zone known as the pycnocline layer (greek pycno = dense + cline = slope). this forms a barrier between the layers above and below, allowing little movement between them. at the bottom is the deepwater zone, which is cold, saline, dense and more or less stable, never interacting with the atmosphere (except in polar regions where the pycnocline is not always present).
Density log, английский
This radioactivity contact log responds to variations in the specific gravity of formations by emitting neurtrons and measuring the secondary gamma radiation from the detector to the instrument. this is particularly helpful when measuring porosity in shaley sands.
Logarithmic, английский
Логарифмический
Expression, французский
Attenuation, английский
- The decrease in magnitude of a signal, as it travels through a medium. used to describe signal loss in a transmission system. measured in decibels (db).
- Поглощение
- Зависимость снижения мощности сигнала от расстояния. для оптоволоконных кабелей обычно выражается в дб/км
- In general terms, a reduction in signal strength.
- The decrease in magnitude of a wave, or a signal, as it travels through a medium or
- The difference between transmitted and received power due to loss through equipment, lines, or other transmission devices; usually expressed in decibels. the loss in power of electromagnetic signals between transmission and reception points.
- The decrease in magnitude of a wave, or a signal, as it travels through a medium or an electric system. it is measured in decibels (db).
- The loss of optical power, whether caused intrinsically (absorption, scattering, microbends, etc.), or extrinsically by components (connectors, splices, splitters, etc)
- The decrease in radiation energy (power) as a beam passes through an absorbing or scattering medium.
- Reduction of signal magnitude, or loss, normally measured in decibels. fiber attenuation is normally measured per unit length in decibels per kilometer. the decrease in signal strength along a fiber optic waveguide caused by absorption and scattering. attenuation is usually expressed in db/km.
- A reduction in the effect or strength of something such as a virus, either because of environmental conditions or as a result of a laboratory procedure
- Ослабление
- Ослабление (затухание). уменьшение количества радиации при ее прохождении через вещество в результате всех видов взаимодействия с этим веществом. ослабление обычно не связано с уменьшением геометрических размеров (мос, 5). ослабление солнечной радиации — потеря энергии световым лучом при его прохождении через атмосферу земли. потеря энергии обусловлена рассеянием света молекулами воздуха, селективной абсорбцией молекулами определенных веществ и рассеянием света аэрозолями (вмо).
- The weakening of a transmitted signal, such as the distortion of a digital signal or the reduction in amplitude of an electrical signal. attenuation is usually measured in decibels and is sometimes desirable, as when signal strength is reduced electronically, for example, by a radio volume control, to prevent overloading.
- The weakening of a transmitted signal, such as the reduction in the brightness of light, as it travels farther from its source.
- Regulatory system of prokaryotes whereby secondary stem-loop structures formed within the 5’ end of an mrna being transcribed determine both if transcription to complete the synthesis of this mrna will occur and if this mrna will be used for translation
- Decrease in transmitted energy intensity over distance. the loss may be due to absorption, scattering, reflection, leakage, beam divergence, or other material effects.
- Снижение интенсивности передаваемой энергии на расстоянии. потери могут быть вызваны поглощением, рассеянием, отражением, утечкой, расходимостью луча или другими материальными эффектами.
- Decrease in signal magnitude during energy transmission from one point to another. this loss may be caused by absorption, reflection, scattering of energy or other material characteristics or may be caused by an electronic or optical device such as an attenuator.1
- (1) decrease in energy or signal magnitude in transmission from one point to another. can be expressed in decibels or as a scalar ratio of the input magnitude to the output magnitude.16 (2) change in signal strength caused by an electronic device such as an attenuator. (3) decrease in intensity caused by absorption, leakage, reflection, scattering or other material characteristics. see also neper.
- (1) decrease in acoustic energy over distance. this loss may be caused by absorption, leakage, reflection, scattering or other material characteristics. (2) decrease in signal amplitude caused by acoustic energy loss or by an electronic device such as an attenuator.10,16,21
Protection, английский
- Охрана; защита см. coverage
- Охрана; защита
- 1. the act of keeping a person or thing safe from harm 2. something which protects children are vaccinated as a protection against disease. protection of children act 1999 protection of children act 1999 /pr? tek??n ?v t??ldr?n kt/
- Protección
- Предохранение
- Formerly, a certificate giving exemption from impressment.
- Защита; средства защиты
- Защита; защитные меры о ~
- Process of setting equipment or anchors for safety.
- A tab within the exchange administration center (eac) that contains anti-virus/anti spam, and data loss protection.
- The process of protecting data from loss or corruption by centrally creating and maintaining replicas and shadow copies of the data. dpm is designed to provide short-term disk-based backup, to support rapid and reliable recovery of data.
- In a specialised sense, used for the rules governing the protection given to a train which stops in an unusual location or becomes derailed, to stop another train hitting it.
Refractive, английский
Absorbance, английский
- Спектральная поглощательная способность. в химическом спектральном анализе — мера интенсивности излучения (или света), поглощаемой образцом, и, следовательно, мера содержания абсорбирующего вещества в образце. обозначается буквой а и описывается уравнением,: a = lglo/h, где /о — интенсивность потока излучения , (или света), падающего на образец; а д — интенсивность, потока излучения (или .света), пропущенного .образцом. связана с коэффициентом пропускания (см. transmittance) уравнением a~igio( 1/т). термины «оптическая плотность» и «экстинк-ция», которые часто применялись для обозначения поглоща-тельной способности, следует изъять из употребления. погло-дцательная способность .складывается из поглощательнрй способности образцами кюветы; поглощательная способность самого `образца называется «внутренней поглощательной способностью» или «внутренней плотностью пропускания». . ср. показатель поглощения (absorption factor).
- The ability of a substance to transform radiant energy into a different form, usually with a resulting rise in temperature. mathematically, absorbance is the negative logarithm to the base 10 of transmittance.
- When a molecule captures energy from a photon and vibrates or stretches, using the energy
Способность, русский
- Успешная стратегия выполнения некоторого задания. стратегия последовательность мыслей и действий для получения конкретного результата.
- Способность, дарование, дар, призвание, умение, ловкость, жилка, струнка, талант, гений; даровитость, талантливость, восприимчивость, переимчивость; годность, дееспособность, работоспособность, кредитоспособность, правоспособность. недюжинные способности.
- Определяются как такие индивидуально-психологические особенности субъекта, кои выражают его готовность к овладению некоими видами деятельности и их успешному выполнению, являются условием их успешного выполнения. под ними понимается высокий уровень интегр
- Определяются как такие индивидуально-психологические особенности субъекта, кои выражают его готовность к овладению некоими видами деятельности и их успешному выполнению, являются условием их успешного выполнения. под ними понимается высокий уровень интеграции и генерализации психических процессов, свойств, отношений, действий и их систем, отвечающих требованиям деятельности. включают в себя как отдельные знания, умения и навыки, так и готовность к обучению новым способам и приемам деятельности.
- Ability
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Pulse position modulation (ppm), английский
A means of encoding digital data by varying the position of a bit in a word that has m bit positions.
Meniscus lens, английский
A lens which has one side convex, the other concave.
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