TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 DEF

The electromagnetic radiation emitted by an ideal black-body; it is the theoretical maximum amount of radiant energy of all wavelengths which can be emitted by a body at a given temperature.  3, record 1, English, - black%2Dbody%20radiation

Record number: 1, Textual support number: 1 CONT

The properties of the gas, which Planck and his contemporaries called blackbody radiation, are almost independent of the matter used to create it.  5, record 1, English, - black%2Dbody%20radiation

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 DEF

Rayonnement électromagnétique maximal que peut émettre théoriquement, par unité de surface, un corps à une température déterminée.  3, record 1, French, - rayonnement%20du%20corps%20noir

Record 1,  Textual support,  Spanish

Record number: 1, Textual support number: 1 DEF

Cantidad máxima teórica de radiación electromagnética que puede ser emitida, por unidad de área de un cuerpo, a una temperatura dada.  1, record 1, Spanish, - radiaci%C3%B3n%20de%20un%20cuerpo%20negro

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 DEF

The fundamental law of the quantum theory, expressing the essential concept that energy transfers associated with radiations such as light or x-rays are made up of definite quanta or increments of energy proportional to the frequency of the corresponding radiation.  3, record 2, English, - Planck%26rsquo%3Bs%20radiation%20law

Record number: 2, Textual support number: 1 CONT

Plank's Law describes the amount of radiation emitted by a black body and the wavelength of the radiation at a given temperature.  4, record 2, English, - Planck%26rsquo%3Bs%20radiation%20law

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 DEF

Équation traduisant la variation du pouvoir émissif en fonction de la longueur d'onde du rayonnement d'un corps noir à une température donnée.  3, record 2, French, - loi%20du%20rayonnement%20de%20Planck

Record 2,  Textual support,  Spanish

Record number: 2, Textual support number: 1 DEF

Expresión analítica de la energía emitida en función de la temperatura por un cuerpo negro [...]  1, record 2, Spanish, - ley%20de%20radiaci%C3%B3n%20de%20Planck

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 CONT

The total emissive power... is the total thermal radiation energy emitted by a surface element into the entire volume above the surface per unit time per unit area(emissive power, radiant flux density).... In the study of real surfaces it is convenient to define an ideal surface. The ideal surface is called a black surface or a black body, where all energy incident upon the body is absorbed, regardless of direction, wavelength or any often identifiable energy characteristic. Since, all energy is absorbed a=1, r=0, t=0. A perfect absorber is also a perfect emitter. So, the emissive power of a black body is only a function of temperature.  1, record 3, English, - total%20emissive%20power

Record 3,  Textual support,  French

Record number: 3, Textual support number: 1 CONT

L'émittance totale ou pouvoir émissif total est la densité de flux émise dans toutes les directions de l'espace, qui dépend généralement de la température de ce corps. [...] L'émittance totale d'un corps quelconque peut toujours être comparée à celle d'un corps noir ayant la même température [...]  2, record 3, French, - %C3%A9mittance%20totale

Record 3,  Textual support,  Spanish

Record 4,  Textual support,  English

Record number: 4, Textual support number: 1 CONT

Part of the optical radiation from the monochromator is directed to a thermocouple detector which is assumed to have a black body response over the wavelength range of interest.  4, record 4, English, - black%2Dbody%20response

Record 4,  Textual support,  French

Record 4,  Textual support,  Spanish

Record 5,  Textual support,  English

Record number: 5, Textual support number: 1 CONT

Radiation heat transfer, black bodies, grey bodies. Wavelength effects. Radiation parameters. Kirchoff's Law. Black body radiation. View factors and their determination by various methods. Grey body radiation for case where view factors unity.  1, record 5, English, - body%20radiation

Record number: 5, Textual support number: 2 CONT

Hot body emission: All bodies emit electromagnetic radiation. The spectral spread of this radiation is determined by the temperature of the body and a fundamental law of physics.  2, record 5, English, - body%20radiation

Record number: 5, Textual support number: 1 OBS

All matter with a temperature greater than 0°K (Kelvin) emits electromagnetic energy; the amount of energy and wavelengths at which the energy is emitted are dependent on the temperature of the body. The higher the temperature of the body, the greater the magnitude of the energy radiated and the shorter the wavelengths at which that peak energy is radiated. A body will radiate energy over a range of wavelengths, called the body’s radiation spectrum (a subset of the complete electromagnetic spectrum).  3, record 5, English, - body%20radiation

Record number: 5, Textual support number: 1 PHR

black, gray, grey, hot body radiation.  4, record 5, English, - body%20radiation

Record number: 5, Textual support number: 2 PHR

black, gray, polar body emission.  4, record 5, English, - body%20radiation

Record 5,  Textual support,  French

Record number: 5, Textual support number: 1 CONT

[...] détermination de la température. 1. Mesures par contact. Le capteur [...] L'inertie thermique provoque un déphasage entre la température mesurée et la température recherchée. Le rayonnement des corps intervient; le capteur émet et absorbe du rayonnement.  2, record 5, French, - rayonnement%20des%20corps

Record number: 5, Textual support number: 2 CONT

En l'année 1900, au cours d'une recherche purement théorique, Max Planck fit une découverte tout à fait remarquable : la loi du rayonnement des corps en fonction de la température ne pouvait pas être déduite uniquement des lois de l'électrodynamique de Maxwell.  3, record 5, French, - rayonnement%20des%20corps

Record number: 5, Textual support number: 1 OBS

Tous les corps solides, liquides ou gazeux, émettent un rayonnement de nature électromagnétique. Cette émission d'énergie s'effectue au détriment de leur énergie interne : pour le thermicien, il s'agit d'un flux de chaleur émis par le corps considéré. Ce rayonnement n'est pas monochromatique, il est composé de longueurs d'ondes différentes. Son intensité dépend de la température du corps. La grande majorité des liquides et solides sont dits opaques car ils arrêtent la propagation de rayonnement dès leur surface. Du point de vue de l'émission, on distinguera : - le rayonnement des corps opaques qui provient de leur seule surface; - le rayonnement des corps partiellement transparents qui provient de toute leur masse.  4, record 5, French, - rayonnement%20des%20corps

Record number: 5, Textual support number: 1 PHR

rayonnement des corps astraux, célestes, chauds, chauffés, gris, non noirs, noirs, opaques, partiellement transparents, radioactifs, réels, semi-transparents, terrestres.  5, record 5, French, - rayonnement%20des%20corps

Record number: 5, Textual support number: 2 PHR

Rayonnement à travers des corps transparents.  5, record 5, French, - rayonnement%20des%20corps

Record 5,  Textual support,  Spanish

Record 6,  Textual support,  English

Record number: 6, Textual support number: 1 DEF

The quantity of heat which a body loses per unit surface area per unit time, under given conditions.  2, record 6, English, - emissivity

Record number: 6, Textual support number: 1 CONT

The emissivity of a black body is proportional to the radiation density, and hence the amount of energy radiated is proportional to the fourth power of the absolute temperature.  3, record 6, English, - emissivity

Record 6,  Textual support,  French

Record number: 6, Textual support number: 1 DEF

Rapport de l'exitance énergétique d'un corps à celle du corps noir de même température.  2, record 6, French, - %C3%A9missivit%C3%A9

Record 6,  Textual support,  Spanish