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Phosphorescence
| Glossary Of Laser Terminology |
- A luminescence which lasts for a relatively long time after excitation of a medium
- Property of emitting light, without any apparent rise in temperature, or the light so produced, due to absorption of radiation from another source, and lasting after exposure has ceased.
- The emission of light as the result of the absorption of electromagnetic radiation; continues for a noticeable length of time after excitation.
- [1] the residual glow on a radar screen after the indicator sweep has moved on [2] incorrectly, bioluminescence.
- Emission of light that persists for a noticeable time after the removal of the excitation source.
- The ability of certain materials to absorb energy and then release that energy as light after a delay
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Фосфоресценция, русский
- , люминесценция более длительная, чем флуоресценция (граница условна). фосфоресценция может продолжаться после прекращения возбуждения от нескольких микросекунд до нескольких суток. наблюдается у кристаллофосфоров, органических люминофоров и жидкостей. происходит при квантовых переходах из электронных метастабильных состояний в нормальное.
- Люминесценция, продолжающаяся после прекращения действия возбуждающего фактора; на
- Эффект свечения под воздействием ультрафиолета и даже после выключения облучения.
Фосфоресценция, свечение, русский
Свечение, русский
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Luminescence, английский
- Light emission which is not caused by heating
- The emission of light not ascribable directly to incandescence.
- Emission of light not caused by incandescence but rather by physiological processes, chemical action, friction or electrical action. (see both fluorescence and phosphorescence.)
- Cool light emitted by sources as a result of the movement of electrons from more energetic states to less energetic states. there are many types of luminescence. chemiluminescence is produced by certain chemical reactions. electroluminescence is produced by electric discharges, which may appear when silk or fur is stroked or when adhesive surfaces are separated. triboluminescence is produced by rubbing or crushing crystals.
Relatively, английский
Excitation, английский
- Возбуждение
- Energizing the active medium to a state of population inversion.
- The state of being mentally or physically aroused
Temperature, английский
- Température
- Dry-bulb - temperature of air as indicated by a standard thermometer.
- An expression of thermal energy density. how hot or cold an object is.
- The measure of the intensity of heat that a substance possesses.
- Температура
- Температура тмр test methods and procedures методы проведения испытаний и последовательность их проведения тмр theodolite measuring point кинотеодолитная станция
- Temperatura, fiebre
- The condition attained when the wetted wick of a wet-bulb thermometer has reached a stable and constant temperature when exposed to moving air in excess of 900 ft (274.3 m) per minute.
- 1. the heat of the body or of the surrounding air, measured in degrees the doctor asked the nurse what the patient’s temperature was. his temperature was slightly above normal. the thermometer showed a temperature of 99°f. to take a patient’s temperature to insert a thermometer in someone’s body to see what his or her body temperature is they took his temperature every four hours. when her temperature was taken this morning, it was normal. 2. illness when your body is hotter than normal he’s in bed with a temperature. her mother says she’s got a temperature, and can’t come to work. comment: the average body temperature is about 37° celsius or 98° fahrenheit. this temperature may vary during the day, and can rise if a person has taken a hot bath or had a hot drink. if the environmental temperature is high, the body has to sweat to reduce the heat gained from the air around it. if the outside temperature is low, the body shivers, because rapid movement of the muscles generates heat. a fever will cause the body temperature to rise sharply, to 40°c (103°f) or more. hypothermia exists when the body temperature falls below about 35°c (95°f).
- Повышение температуры бетона ~ of truss высота фермы jet ~ высота подъёма горизонтальной неизотермической приточной струи, «всплывающей» над приточным отверстием
- Температура ~ of adiabatic saturation температура адиабатического насыщения
- Normal adult temperature varies among horses, but will usually range in degrees from 99.5°f to 100.5°f.
- A measure of the average kinetic energy of a material. the standard unit of temperature is a kelvin, (k). temperature determines the direction of heat flow between any two systems in thermal contact. heat will always flow from the area of higher temperature (t source) to one of lower temperature (t sink). temperature gradient (?t)
- A measure of the degree of molecular motion of a material compared to a reference point. temperature is measured in degrees farenheit (melting point of ice = 32 º f, boiling point of water = 212 º f) or degrees celsius (melting point of ice = 0 º c, boiling point of water = 100 º c).
- The degree of sensible heat of a body as measured by a thermometer or similar instrument.
- Measure of the intensity of particle motion in degrees celsius (°c) or degrees fahrenheit (°f) or, in the absolute scale, kelvin (k), where the increment of 1 k = 1 °c = 1.8 °f.
- Temperature of surrounding atmosphere. also called dry bulb temperature. compare standard atmospheric conditions. ampere (a): si unit of electric current. ampere per meter (a·m–1): si derived unit of magnetic field intensity. the measurement 1 a·m–1, for example, describes a current of 1 a flowing through a coil that is 1 m in diameter. compare oersted. ampere turn (at): in magnetic particle testing, unit for expressing the magnetomotive force required for magnetization using a coil in terms of the product of the number of coil turns and the current in amperes flowing through the coil. amplitude, echo: in ultrasonic testing, the vertical height of a received signal on an a-scan, measured from base to peak for a video presentation or from peak to peak for a radio frequency presentation.
- Measure of the intensity of particle motion in degrees celsius (°c), degrees fahrenheit (°f) or, in the absolute scale, kelvin (k) or degrees rankine (°r). an increment of 1 k = 1 °c = 1.8 °r = 1.8 °f. compare heat.
Absorption, немецкий
Electromagnetic, английский
Noticeable, английский
A заметный, явный (син. pronounced) accent
Bioluminescence, английский
Emission of light by marine organisms when stirred up by wave motion or the bow wave of a ship or its propellers. popularly, but incorrectly, known as phosphorescence.
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Optical thickness, английский
A measure either for the absorption or the effective optical path length of a sample
Recoil limit, английский
A lower limit for the temperature which can be reached with some laser cooling techniques
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