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Luminescence (rt)
| Глоссарий терминов по технологиям неразрушающего контроля (NDT) |
A phenomenon in which the absorption of radiation by a substance gives rise to the emission of light characteristic of the substance.
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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.
Phenomenon, английский
- 1. a fact or situation which can be observed 2. someone or something that is considered to be extraordinary and marvellous
- A condition with various possible causes in which the blood supply to the fingers and toes is restricted and they become cold, white and numb. also called dead man’s fingers, vasospasm [described 1862. after maurice raynaud (1834–81), french physician.] rbc rbc abbr red blood cell rcgp rcgp abbr royal college of general practitioners rcn rcn abbr royal college of nursing rcog rcog abbr royal college of obstetricians and gynaecologists rcp rcp abbr royal college of physicians
- In diabetes mellitus, a swing to a high level of glucose in the blood from an extremely low level, usually occurring after an untreated insulin reaction during the night. it is caused by the release of stress hormones to counter low glucose levels.
- Явление; эффект
Absorption, немецкий
Characteristic, английский
- Property that helps to distinguish between items of a given population (3)
- A quality which allows something to be recognised as different cancer destroys the cell’s characteristics. adjective being a typical or distinguishing quality symptoms characteristic of anaemia the inflammation is characteristic of shingles.
- N характеристика (см. тж. portrayal) articulatory ~ артикуляторная характеристика perceptual ~ перцептивная характеристика, характеристика восприятия
- Характерная особенность, признак; характеристика, особенность ~s of the loading особенности [параметры] нагружение (конструкции)
- The characteristic dimension dc
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Stripping emulsion (rt), английский
A photographic emulsion, for use in autoradiography, which can be removed from its base and placed in contact with a specimen containing radioactive material.
Radiograph (rt), английский
A permanent visible image on a recording medium produced by penetrating radiation passing through the material being tested.
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