TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 DEF

Instrument for measuring illuminance [and the intensity of light].  2, record 1, English, - photometer

Record number: 1, Textual support number: 1 OBS

In meteorology, only an instrument which has a spectral sensitivity equal to that of the "normal human eye" is termed a photometer.  2, record 1, English, - photometer

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 DEF

Instrument de mesure de la luminance ou de l'éclairement lumineux.  2, record 1, French, - photom%C3%A8tre

Record number: 1, Textual support number: 1 CONT

[En météorologie, [le] photomètre [est] utilisé pour mesurer la radiation du soleil ou du ciel dans une partie du spectre  3, record 1, French, - photom%C3%A8tre

Record number: 1, Textual support number: 2 CONT

photomètre. [Exemples : ] microphotomètres, spectrophotomètres. [...] On utilise surtout de nos jours les cellules photo-électriques. - Posemètre; luxmètre.  3, record 1, French, - photom%C3%A8tre

Record number: 1, Textual support number: 1 OBS

En météorologie, ce terme ne désigne que les instruments dont la sensibilité spectrale est égale à celle de «l'œil humain normal».  4, record 1, French, - photom%C3%A8tre

Record 1,  Textual support,  Spanish

Record number: 1, Textual support number: 1 DEF

Aparato destinado a medir la intensidad de una radiación luminosa.  2, record 1, Spanish, - fot%C3%B3metro

Record number: 1, Textual support number: 1 OBS

En meteorología, instrumento cuya sensibilidad espectral es la del "ojo humano normal".  3, record 1, Spanish, - fot%C3%B3metro

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 DEF

The smallest illuminance required by the eye to make a light source visible.  1, record 2, English, - visual%20threshold%20of%20illumination

Record number: 2, Textual support number: 1 OBS

visual threshold of illumination: term and definition officially approved by the International Civil Aviation Organization (ICAO).  3, record 2, English, - visual%20threshold%20of%20illumination

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 DEF

Éclairement le plus faible nécessaire à l'œil pour déceler une source lumineuse.  3, record 2, French, - seuil%20visuel%20d%27%C3%A9clairement

Record number: 2, Textual support number: 1 OBS

seuil visuel d'éclairement : terme et définition uniformisés par l'Organisation de l'aviation civile internationale (OACI).  4, record 2, French, - seuil%20visuel%20d%27%C3%A9clairement

Record 2,  Textual support,  Spanish

Record number: 2, Textual support number: 1 DEF

La iluminancia mínima requerida por el ojo para hacer visible una fuente luminosa.  1, record 2, Spanish, - umbral%20visual%20de%20iluminaci%C3%B3n

Record number: 2, Textual support number: 1 OBS

umbral visual de iluminación: término y definición aceptados oficialmente por la Organización de Aviación Civil Internacional (OACI).  2, record 2, Spanish, - umbral%20visual%20de%20iluminaci%C3%B3n

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 DEF

An instrument for measuring photometric quantities such as illuminance(in foot candles or lux).  2, record 3, English, - photometer

Record number: 3, Textual support number: 1 OBS

One may be adapted with filters, etc. to measure reflected light hence the colour of print or paper. Useful photometers to printers and papermakers are the user-friendly densitometer, the colourimeter and the spectrophotometer.  3, record 3, English, - photometer

Record 3,  Textual support,  French

Record number: 3, Textual support number: 1 DEF

Appareil destiné à la mesure des grandeurs photométriques comme l’éclairement (en pied-bougies ou en lux).  2, record 3, French, - photom%C3%A8tre

Record 3,  Textual support,  Spanish

Record 4,  Textual support,  English

Record number: 4, Textual support number: 1 DEF

At a surface element on the surface of the medium, in a given direction, under specified conditions of illumination, the quotient of the luminance of the surface element in the given direction divided by the illuminance on the medium...  1, record 4, English, - luminance%20coefficient

Record number: 4, Textual support number: 1 OBS

The luminance coefficient is expressed in (cd/m²)/lx = sr^-1.  1, record 4, English, - luminance%20coefficient

Record number: 4, Textual support number: 2 OBS

(cd/m²)/lx: (candela per square meter)/lux.  2, record 4, English, - luminance%20coefficient

Record number: 4, Textual support number: 3 OBS

This is a measure of the light scattered by an ocular, the luminance of the light scattered by the ocular being expressed as a proportion of the amount of light falling on the ocular.  1, record 4, English, - luminance%20coefficient

Record number: 4, Textual support number: 4 OBS

luminance coefficient: term and definition standardized by the International Organization for Standardization (ISO).  2, record 4, English, - luminance%20coefficient

Record 4,  Textual support,  French

Record number: 4, Textual support number: 1 DEF

Sur un élément de surface d'un milieu, dans une direction donnée et dans des conditions d'éclairage données, quotient de la luminance de l'élément de surface dans la direction donnée, par l'éclairement lumineux du milieu [...]  1, record 4, French, - coefficient%20de%20luminance

Record number: 4, Textual support number: 1 OBS

Le coefficient de luminance est exprimé en (cd/m²)/lx = sr^-1.  1, record 4, French, - coefficient%20de%20luminance

Record number: 4, Textual support number: 2 OBS

(cd/m²)/lx : (candela par mètre carré)/lux.  2, record 4, French, - coefficient%20de%20luminance

Record number: 4, Textual support number: 3 OBS

Il s'agit d'une mesure de la lumière diffusée par un oculaire, qui est égale au rapport de la luminance de la lumière diffusée par l'oculaire à la quantité de lumière frappant l'oculaire.  1, record 4, French, - coefficient%20de%20luminance

Record number: 4, Textual support number: 4 OBS

coefficient de luminance : terme et définition normalisés par l'Organisation internationale de normalisation (ISO).  2, record 4, French, - coefficient%20de%20luminance

Record 4,  Textual support,  Spanish

Record 5,  Textual support,  English

Record number: 5, Textual support number: 1 DEF

The ratio of the luminance of a field to the illuminance of the plane of that field, for a diffuse illumination and an observation direction forming a grazing angle with the road surface.  1, record 5, English, - luminance%20coefficient%20under%20diffuse%20illumination

Record number: 5, Textual support number: 1 OBS

luminance coefficient under diffuse illumination: term and definition proposed by the World Road Association.  2, record 5, English, - luminance%20coefficient%20under%20diffuse%20illumination

Record 5,  Textual support,  French

Record number: 5, Textual support number: 1 DEF

Rapport de la luminance d'un champ et de l'éclairement du plan de ce champ, pour un éclairage diffus et une direction d'observation formant un angle rasant avec la surface de la chaussée.  2, record 5, French, - coefficient%20de%20luminance%20en%20%C3%A9clairage%20diffus

Record number: 5, Textual support number: 1 OBS

coefficient de luminance en éclairage diffus : terme et définition proposés par l'Association mondiale de la route.  2, record 5, French, - coefficient%20de%20luminance%20en%20%C3%A9clairage%20diffus

Record 5,  Textual support,  Spanish

Record 6,  Textual support,  English

Record number: 6, Textual support number: 1 DEF

The ratio of the luminance of a field and the illuminance of a plane perpendicular to the illumination direction at that field, for observation and illumination directions close to each other and both forming grazing angles with the road surface.  1, record 6, English, - coefficient%20of%20retroreflected%20luminance

Record number: 6, Textual support number: 1 OBS

coefficient of retroreflected luminance: term and definition proposed by the World Road Association.  2, record 6, English, - coefficient%20of%20retroreflected%20luminance

Record 6,  Textual support,  French

Record number: 6, Textual support number: 1 DEF

Rapport de la luminance d'un champ et de l'éclairement d'un plan perpendiculaire à la direction d'éclairage, pour des directions d'observation et d'éclairage proches l'une de l'autre et formant un angle rasant avec la surface de la chaussée.  2, record 6, French, - coefficient%20de%20luminance%20r%C3%A9tror%C3%A9fl%C3%A9chie

Record number: 6, Textual support number: 1 OBS

coefficient de luminance rétroréfléchie : terme et définition proposés par l'Association mondiale de la route.  2, record 6, French, - coefficient%20de%20luminance%20r%C3%A9tror%C3%A9fl%C3%A9chie

Record 6,  Textual support,  Spanish

Record 7,  Textual support,  English

Record number: 7, Textual support number: 1 CONT

Light output. The Measurement of Lamp Output.... While lumens are a measurement of light output from the light source(lamp), it only indirectly correlates to how much usable light there is for a certain application. This is true because visual light is actually how much illuminance is reflected from the surface(s) it hits. Light can be absorbed or reflected in different ratios depending on the surface it touches.  2, record 7, English, - light%20output

Record number: 7, Textual support number: 1 OBS

Term(s) taken from a Canadian laboratory-equipment company’s catalogue.  3, record 7, English, - light%20output

Record 7,  Textual support,  French

Record number: 7, Textual support number: 1 OBS

Terme(s) tiré(s) du catalogue d'une compagnie canadienne d'équipement de laboratoire.  1, record 7, French, - puissance%20lumineuse%20de%20sortie

Record 7,  Textual support,  Spanish

Record 8,  Textual support,  English

Record number: 8, Textual support number: 1 DEF

Surface on which illuminance is measured or specified.  2, record 8, English, - reference%20surface

Record number: 8, Textual support number: 1 CONT

A reference surface is a plane of known location and smoothness. It could be the surface of a vise, the surface of a part, of the surface of the machine tool bed. In any of these cases, machinists use it to measure from other points in the working environment.  1, record 8, English, - reference%20surface

Record 8,  Textual support,  French

Record number: 8, Textual support number: 1 DEF

Surface sur laquelle on mesure l'éclairement.  1, record 8, French, - surface%20de%20r%C3%A9f%C3%A9rence

Record 8,  Textual support,  Spanish

Record 9,  Textual support,  English

Record number: 9, Textual support number: 1 DEF

The characteristic relating the illuminance on the photocathode and the signal current.  2, record 9, English, - light%2Dsignal%20transfer%20characteristic

Record 9,  Textual support,  French

Record number: 9, Textual support number: 1 DEF

Caractéristique exprimant la relation entre l'éclairement de la photocathode et le courant de signal.  1, record 9, French, - caract%C3%A9ristique%20de%20transfert%20lumi%C3%A8re%2Dsignal

Record 9,  Textual support,  Spanish

Record 10,  Textual support,  English

Record number: 10, Textual support number: 1 DEF

The quotient of the voltage across the device by the current through the device under stated illuminance.  2, record 10, English, - resistance%20under%20illumination

Record 10,  Textual support,  French

Record number: 10, Textual support number: 1 DEF

Quotient de la tension aux bornes d'un dispositif photosensible par le courant dans le dispositif, pour un éclairement donné.  1, record 10, French, - r%C3%A9sistance%20sous%20%C3%A9clairement

Record 10,  Textual support,  Spanish

Record 11,  Textual support,  English

Record number: 11, Textual support number: 1 DEF

In communications systems, such as facsimile, radiophoto, and wirephoto,... the signal that corresponds to the darkest part, i. e., the spot with the lowest illuminance, of the object being scanned.  2, record 11, English, - picture%20black

Record 11,  Textual support,  French

Record 11,  Textual support,  Spanish

Record 12,  Textual support,  English

Record number: 12, Textual support number: 1 DEF

A unit of illumination equivalent to the illumination of a surface all of which is at a distance of one foot from a point source of light having a luminous intensity of one candela (or formerly one international candle), corresponding to a luminous flux density of one lumen per square foot.  6, record 12, English, - foot%2Dcandle

Record number: 12, Textual support number: 1 OBS

A foot-candle(sometimes foot candle; abbreviated fc, lm/ft², or sometimes ft-c) is a non-SI unit of illuminance or light intensity widely used in photography, film, television, and the lighting industry.  4, record 12, English, - foot%2Dcandle

Record number: 12, Textual support number: 2 OBS

A footcandle ... is equal to approximately 10,7639 lux.  3, record 12, English, - foot%2Dcandle

Record 12,  Textual support,  French

Record number: 12, Textual support number: 1 DEF

Unité anglo-saxonne d'éclairement d'une surface d'un pied carré sur laquelle est réparti uniformément un flux lumineux ou un lumen.  4, record 12, French, - pied%2Dbougie

Record number: 12, Textual support number: 1 CONT

L'intensité lumineuse est une mesure de la quantité de lumière qui frappe une surface. Elle s'exprime en pieds-bougies. Un pied-bougie correspond à 1 lumen tombant sur une surface de 1 pied carré. L'équivalent métrique d'un pied-bougie est le lux (lumen par mètre carré). 1 pied-bougie = 10,76 lux.  1, record 12, French, - pied%2Dbougie

Record number: 12, Textual support number: 2 CONT

En unités impériales, on mesure le niveau d'éclairement en pieds-bougies (fc) : 1 fc = 1 lm/ft². La relation entre le pied-bougie et le lux est de : 1 fc = 10,76 lx. Il se trouve qu'elle est identique à la relation entre les mètres carrés et les pieds carrés : 1 m² = 10.76 pi².  2, record 12, French, - pied%2Dbougie

Record number: 12, Textual support number: 1 OBS

pluriel : pieds-bougies  5, record 12, French, - pied%2Dbougie

Record number: 12, Textual support number: 2 OBS

bougie : unité de luminescence.  6, record 12, French, - pied%2Dbougie

Record number: 12, Textual support number: 3 OBS

Le mot «bougie» tend à remplacer «chandelle» qui est vieilli en ce sens.  7, record 12, French, - pied%2Dbougie

Record 12,  Textual support,  Spanish

Record 13,  Textual support,  English

Record number: 13, Textual support number: 1 DEF

Quotient of the luminous flux incident on an infinitesimal element of a surface containing the point under consideration, by the area of that element.  3, record 13, English, - illuminance

Record number: 13, Textual support number: 1 CONT

Illuminance(usually ’E’ in formulas) is the total amount of visible light illuminating(incident upon) a point on a surface from all directions above the surface. This "surface" can be a physical surface or an imaginary plane. Therefore illuminance is equivalent to irradiance weighted with the response curve of the human eye.  4, record 13, English, - illuminance

Record number: 13, Textual support number: 1 OBS

Standard unit for illuminance is Lux(lx) which is lumens per square meter(lm/m²). There are several older units of illuminance : footcandle : 1 fc=10. 764 lx; phot : 1 ph=10 000 lx. Typical illuminance values are : 1 lx=full moon; 10 lx=street lighting; 100-1 000 lx=workspace lighting; 10 000 lx=surgery lighting; 100 000 lx=plain sunshine.  4, record 13, English, - illuminance

Record number: 13, Textual support number: 2 OBS

"Illumination" is a deprecated term for "illuminance".  4, record 13, English, - illuminance

Record number: 13, Textual support number: 3 OBS

illuminance : term officially approved by the RADARSAT-2 Terminology Approval Group(RTAG).  5, record 13, English, - illuminance

Record 13,  Textual support,  French

Record number: 13, Textual support number: 1 DEF

Quotient du flux lumineux reçu par un élément infinitésimal d'une surface entourant le point considéré, par l'aire de cet élément.  4, record 13, French, - %C3%A9clairement%20lumineux

Record number: 13, Textual support number: 1 OBS

Le symbole de l'éclairement est E_r.  3, record 13, French, - %C3%A9clairement%20lumineux

Record number: 13, Textual support number: 2 OBS

Les unités du Système international (SI) : [...] l'éclairement lumineux E, dont l'unité est le lux (lm/m²) [...]  5, record 13, French, - %C3%A9clairement%20lumineux

Record number: 13, Textual support number: 3 OBS

éclairement lumineux : terme uniformisé par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR).  6, record 13, French, - %C3%A9clairement%20lumineux

Record 13,  Textual support,  Spanish

Record number: 13, Textual support number: 1 DEF

Cociente entre el flujo luminoso incidente sobre un elemento infinitesimal de superficie que contiene el punto considerado por el área de dicho elemento.  1, record 13, Spanish, - iluminancia

Record 14,  Textual support,  English

Record number: 14, Textual support number: 1 DEF

Ratio of the minimum to the average illuminance on the plane.  1, record 14, English, - uniformity%20ratio%20of%20illuminance

Record number: 14, Textual support number: 1 OBS

Use is made also of a) the ratio of the minimum to the maximum illuminance and b) the inverse of either of these two ratios.  1, record 14, English, - uniformity%20ratio%20of%20illuminance

Record number: 14, Textual support number: 1 CONT

uniformity ratio of illuminance(on a given plane).  1, record 14, English, - uniformity%20ratio%20of%20illuminance

Record 14,  Textual support,  French

Record number: 14, Textual support number: 1 DEF

Rapport de l'éclairement minimal à l'éclairement moyen sur la surface.  1, record 14, French, - facteur%20d%27uniformit%C3%A9%20de%20l%27%C3%A9clairement

Record number: 14, Textual support number: 1 OBS

On utilise aussi a) le rapport de l'éclairement minimal à l'éclairement maximal et b) l'inverse de l'un ou l'autre de ces deux rapports.  1, record 14, French, - facteur%20d%27uniformit%C3%A9%20de%20l%27%C3%A9clairement

Record number: 14, Textual support number: 1 CONT

facteur d'uniformité de l'éclairement (sur une surface donnée).  1, record 14, French, - facteur%20d%27uniformit%C3%A9%20de%20l%27%C3%A9clairement

Record 14,  Textual support,  Spanish

Record 15,  Textual support,  English

Record number: 15, Textual support number: 1 DEF

SI unit of illuminance equal to the illuminance produced by a luminous flux of 1 lumen uniformly distributed over a surface of 1 m².  3, record 15, English, - lux

Record number: 15, Textual support number: 1 CONT

A level of illumination of one lux means that one lumen of light is distributed over every square metre of surface.  4, record 15, English, - lux

Record number: 15, Textual support number: 1 OBS

lux; lx: term and abbreviation officially approved by the International Civil Aviation Organization (ICAO).  5, record 15, English, - lux

Record 15,  Textual support,  French

Record number: 15, Textual support number: 1 DEF

Unité d'éclairement (symbole : lx), équivalant à l'éclairement d'une surface qui reçoit normalement, d'une manière uniformément répartie, un flux lumineux de 1 lumen par mètre carré.  3, record 15, French, - lux

Record number: 15, Textual support number: 1 OBS

lux : terme recommandé par l'Office de la langue française (OLF).  4, record 15, French, - lux

Record number: 15, Textual support number: 2 OBS

lux; lx: terme et abréviation uniformisés par l'Organisation de l'aviation civile internationale (OACI).  5, record 15, French, - lux

Record 15,  Textual support,  Spanish

Record number: 15, Textual support number: 1 DEF

Unidad de iluminancia igual a la iluminación producida por un flujo luminoso de 1 lumen distribuido uniformemente en una superficie de 1 m².  3, record 15, Spanish, - lux

Record number: 15, Textual support number: 1 OBS

lux; lx: término y abreviatura aceptados oficialmente por la Organización de Aviación Civil Internacional (OACI).  4, record 15, Spanish, - lux

Record 16,  Textual support,  English

Record number: 16, Textual support number: 1 DEF

[A] light meter [which] estimates the illuminance on a surface of interest, such as a part of a scene or an exposure plane.  2, record 16, English, - incident%2Dlight%20meter

Record 16,  Textual support,  French

Record number: 16, Textual support number: 1 DEF

[...] posemètre [qui] calcule la quantité de lumière [...] reçue par le sujet.  1, record 16, French, - posem%C3%A8tre%20%C3%A0%20lumi%C3%A8re%20incidente

Record 16,  Textual support,  Spanish

Record 17,  Textual support,  English

Record number: 17, Textual support number: 1 DEF

In physics, any process in which the flux density(or power, amplitude, intensity, illuminance) of a parallel beam of energy decreases with increasing distance from the energy source.  2, record 17, English, - attenuation

Record number: 17, Textual support number: 1 CONT

The amount of attenuation will depend upon the amount of particulate matter within the atmosphere, the angle of the sun in the sky, the position of the sensor, and hence the atmospheric path length of the incident energy.  3, record 17, English, - attenuation

Record number: 17, Textual support number: 1 OBS

Attenuation is always due to the action of the transmitting medium itself, mainly by absorption and scattering.  4, record 17, English, - attenuation

Record number: 17, Textual support number: 2 OBS

In a transmission line, the attenuation is generally expressed in decibels.  5, record 17, English, - attenuation

Record number: 17, Textual support number: 3 OBS

attenuation: term and definition standardized by IEEE, the International Electrotechnical Commission and NATO respectively.  6, record 17, English, - attenuation

Record 17,  Textual support,  French

Record number: 17, Textual support number: 1 DEF

En physique, processus par lequel un flux radiatif décroit à mesure qu'augmente la distance qui le sépare de sa source.  3, record 17, French, - att%C3%A9nuation

Record number: 17, Textual support number: 1 CONT

Opérer dans la région micro-ondes du spectre électromagnétique améliore la pénétration du signal (diminue l'atténuation) dans l'atmosphère.  4, record 17, French, - att%C3%A9nuation

Record number: 17, Textual support number: 1 OBS

Les termes «affaiblissement» et «atténuation» se distinguent surtout selon les domaines d'application. Le premier est plus fréquent en radioélectricité et en transmissions; le second sert plutôt lorsqu'il s'agit de lumière visible ou de rayonnement ionisant (radioactivité).  5, record 17, French, - att%C3%A9nuation

Record number: 17, Textual support number: 2 OBS

Par extension l'affaiblissement signifie également la diminution de puissance du signal et s'exprime alors en décibels (dB).  6, record 17, French, - att%C3%A9nuation

Record number: 17, Textual support number: 3 OBS

affaiblissement : terme uniformisé par le Comité de terminologie française du Conseil de doctrine et de tactique de l'Armée de terre.  5, record 17, French, - att%C3%A9nuation

Record number: 17, Textual support number: 4 OBS

affaiblissement : terme normalisé par l'AFNOR et la CEI; atténuation : terme et définition normalisés par l'OTAN.  5, record 17, French, - att%C3%A9nuation

Record 17,  Textual support,  Spanish

Record number: 17, Textual support number: 1 DEF

Disminución del valor eléctrico u óptico recibido de una señal, con respecto a su valor original de emisión.  2, record 17, Spanish, - atenuaci%C3%B3n

Record number: 17, Textual support number: 1 OBS

En una línea de transmisión. Se expresa en decibelios "dB".  2, record 17, Spanish, - atenuaci%C3%B3n

Record 18,  Textual support,  English

Record number: 18, Textual support number: 1 DEF

Quotient of the radiant flux incident on an element of the surface containing the point by the area of that element.  2, record 18, English, - irradiance

Record number: 18, Textual support number: 1 CONT

Irradiance at a point on a surface is the radiant flux incident on an infinitesimal surface element containing the point, divided by the area of the surface element. [It is expressed in] watt/metre² (W/m²).  4, record 18, English, - irradiance

Record number: 18, Textual support number: 1 OBS

Irradiance is a measure of radiometric flux [divided] per unit area. Irradiance is typically expressed in W/cm² (watts per square centimeter).  5, record 18, English, - irradiance

Record number: 18, Textual support number: 2 OBS

The photometric equivalent of irradiance is illuminance [lux], obtained by integrating spectral irradiance times luminous efficiency over the visible spectrum.  3, record 18, English, - irradiance

Record 18,  Textual support,  French

Record number: 18, Textual support number: 1 DEF

Puissance de rayonnement [électromagnétique] reçu par unité de surface de l'objet éclairé.  4, record 18, French, - %C3%A9clairement%20%C3%A9nerg%C3%A9tique

Record number: 18, Textual support number: 1 CONT

«irradiance» [est] appelée aussi «éclairement énergétique», c'est le flux énergétique reçu par unité de surface, exprimé généralement en watts par centimètre carré [...]  5, record 18, French, - %C3%A9clairement%20%C3%A9nerg%C3%A9tique

Record number: 18, Textual support number: 1 OBS

L'éclairement énergétique est exprimé généralement en watts par mètre carré (W/m²).  6, record 18, French, - %C3%A9clairement%20%C3%A9nerg%C3%A9tique

Record number: 18, Textual support number: 2 OBS

Dans les sources consultées, l'utilisation du terme «éclairement énergétique» est de beaucoup supérieure à celle de «irradiance».  7, record 18, French, - %C3%A9clairement%20%C3%A9nerg%C3%A9tique

Record 18,  Textual support,  Spanish

Record number: 18, Textual support number: 1 DEF

Cociente entre el flujo de radiación incidente sobre un elemento infinitesimal de superficie que contiene el punto considerado y el área de dicho elemento.  2, record 18, Spanish, - irradiancia

Record 19,  Textual support,  English

Record number: 19, Textual support number: 1 DEF

Product of an illuminance and its duration.  1, record 19, English, - luminous%20exposure

Record 19,  Textual support,  French

Record number: 19, Textual support number: 1 DEF

Produit de l'éclairement reçu par la durée d'exposition à cet éclairement. [Terme et définition normalisés par l'AFNOR et reproduits avec son autorisation.]  4, record 19, French, - exposition%20lumineuse

Record number: 19, Textual support number: 1 OBS

lumination : terme normalisé par l'AFNOR.  5, record 19, French, - exposition%20lumineuse

Record 19,  Textual support,  Spanish

Record number: 19, Textual support number: 1 DEF

Producto de la iluminancia por su duración.  1, record 19, Spanish, - exposici%C3%B3n%20luminosa

Record 20,  Textual support,  English

Record number: 20, Textual support number: 1 CONT

A measure of the intensity of light falling on a subject. Synonymous with flux density; stated in terms of units of luminous flux incident upon a unit area(illuminance).  1, record 20, English, - illumination%20level

Record 20,  Textual support,  French

Record number: 20, Textual support number: 1 CONT

Mesure de l'intensité lumineuse tombant sur un objet. Synonyme de la densité de flux, l'éclairement s'exprime en unité de flux lumineux incident par unité de surface (lumens par mètre carré).  1, record 20, French, - intensit%C3%A9%20d%27%C3%A9clairement

Record 20,  Textual support,  Spanish

Record 21,  Textual support,  English

Record number: 21, Textual support number: 1 DEF

Illuminance without any contribution from the direct solar radiation.  1, record 21, English, - diffuse%20illuminance

Record number: 21, Textual support number: 1 OBS

Illumination is a deprecated term for Illuminance.  3, record 21, English, - diffuse%20illuminance

Record 21,  Textual support,  French

Record number: 21, Textual support number: 1 DEF

Éclairement lumineux sans contribution du rayonnement solaire direct.  3, record 21, French, - %C3%A9clairement%20lumineux%20diffus

Record 21,  Textual support,  Spanish

Record number: 21, Textual support number: 1 DEF

Iluminancia a la cual no contribuye la radiación solar directa.  1, record 21, Spanish, - iluminancia%20difusa

Record 22,  Textual support,  English

Record number: 22, Textual support number: 1 DEF

... the amount of light reaching a surface.  4, record 22, English, - illuminance

Record number: 22, Textual support number: 2 DEF

The luminous influx received per unit area.  5, record 22, English, - illuminance

Record 22,  Textual support,  French

Record number: 22, Textual support number: 1 DEF

[...] flux lumineux reçu par unité de surface.  3, record 22, French, - %C3%A9clairement%20lumineux

Record number: 22, Textual support number: 1 OBS

Il [flux lumineux] s'exprime en lux (lx). Le lux est l'unité d'éclairement lumineux d'un récepteur situé dans un faisceau lumineux homogène donnant un flux de un lumen par mètre carré et orienté perpendiculairement aux rayons.  3, record 22, French, - %C3%A9clairement%20lumineux

Record number: 22, Textual support number: 2 OBS

éclairement lumineux; éclairement : termes normalisés par l'AFNOR.  4, record 22, French, - %C3%A9clairement%20lumineux

Record 22,  Textual support,  Spanish

Record 23,  Textual support,  English

Record number: 23, Textual support number: 1 OBS

illuminance : term officially approved by the International Civil Aviation Organization(ICAO).  2, record 23, English, - illuminance

Record 23,  Textual support,  French

Record number: 23, Textual support number: 1 OBS

niveau d'éclairement; éclairement : termes uniformisés par l'Organisation de l'aviation civile internationale (OACI).  2, record 23, French, - niveau%20d%27%C3%A9clairement

Record 23,  Textual support,  Spanish

Record number: 23, Textual support number: 1 OBS

iluminación : término aceptado oficialmente por la Organización de Aviación Civil Internacional (OACI).  2, record 23, Spanish, - iluminaci%C3%B3n

Record 24,  Textual support,  English

Record 24,  Textual support,  French

Record number: 24, Textual support number: 1 DEF

Flux lumineux incident sur la rétine.  1, record 24, French, - %C3%A9clairement%20r%C3%A9tinien

Record number: 24, Textual support number: 1 OBS

La formule simplifiée est LS où L est la luminance du stimulus en cd/m² et S la surface de la pupille en mm².  1, record 24, French, - %C3%A9clairement%20r%C3%A9tinien

Record number: 24, Textual support number: 2 OBS

Source MVISI-F : Le nouveau dictionnaire de la vision par Michel Millodot, Médiacom Vision Éditeur, 1997.  2, record 24, French, - %C3%A9clairement%20r%C3%A9tinien

Record 24,  Textual support,  Spanish

Record 25,  Textual support,  English

Record number: 25, Textual support number: 1 CONT

scene irradiance.  2, record 25, English, - irradiance

Record number: 25, Textual support number: 1 OBS

Compare to illuminance.  2, record 25, English, - irradiance

Record 25,  Textual support,  French

Record 25,  Textual support,  Spanish

Record 26,  Textual support,  English

Record number: 26, Textual support number: 1 OBS

1. International System of Units standard prefix=10(Name : deca) ;2. Unit derived from base SI Quantity :Illuminance=lux.  2, record 26, English, - decalux

Record 26,  Textual support,  French

Record 26,  Textual support,  Spanish

Record 27,  Textual support,  French

Record 27,  Textual support,  Spanish

Record 28,  Textual support,  English

Record number: 28, Textual support number: 1 DEF

The range of exposure over which there is little change in tone reproduction. The ratio of the exposure scale of the negative material to the illuminance scale of the camera image.  2, record 28, English, - exposure%20latitude

Record 28,  Textual support,  French

Record number: 28, Textual support number: 1 DEF

[...] rapport qui exprime en fonction de la durée optimum d'insolation la limite dans laquelle une émulsion donnée peut être exposée à la lumière au travers de l'objectif photographique tout en restant susceptible de donner des épreuves positives acceptables, que cette émulsion soit sous-exposée ou surexposée.  4, record 28, French, - latitude%20d%27exposition

Record 28,  Textual support,  Spanish

Record 29,  Textual support,  French

Record 29,  Textual support,  Spanish

Record 30,  Textual support,  English

Record number: 30, Textual support number: 1 DEF

Ratio of the average illuminance on the working plane after a certain period of use of a lighting installation to the average illuminance obtained under the same conditions for a new installation.  2, record 30, English, - maintenance%20factor

Record 30,  Textual support,  French

Record number: 30, Textual support number: 1 DEF

Rapport entre l'éclairement moyen sur le plan utile après une certaine durée d'utilisation d'une installation d'éclairage et l'éclairement moyen obtenu dans les mêmes conditions pour l'installation neuve.  2, record 30, French, - facteur%20de%20maintenance

Record number: 30, Textual support number: 1 OBS

facteur de maintenance : Terme et définition recommande par l'OLF  3, record 30, French, - facteur%20de%20maintenance

Record 30,  Textual support,  Spanish

Record 31,  Textual support,  English

Record number: 31, Textual support number: 1 DEF

the ratio of luminous emittance to the illuminance of a reflecting surface.  2, record 31, English, - luminous%20reflectance

Record 31,  Textual support,  French

Record 31,  Textual support,  Spanish

Record 32,  Textual support,  English

Record number: 32, Textual support number: 1 DEF

Quotient of the luminous intensity reflected in the direction considered, by the illuminance at the retro-reflector for given angles of entrance, observation and rotation.  1, record 32, English, - coefficient%20of%20reflex%20luminous%20intensity

Record 32,  Textual support,  French

Record number: 32, Textual support number: 1 DEF

Quotient de l'intensité lumineuse réfléchie dans la direction considérée par l'éclairement du dispositif catadioptrique, pour des angles d'éclairage, de divergence et de rotation donnés.  1, record 32, French, - coefficient%20d%27intensit%C3%A9%20lumineuse

Record 32,  Textual support,  Spanish

Record 33,  Textual support,  English

Record number: 33, Textual support number: 1 DEF

Expression used conventionally to designate the illuminance produced by the source of light and measured in a plane perpendicular to the incident light and passing through the reference centre.  1, record 33, English, - illuminance%20at%20the%20retro%2Dreflector

Record 33,  Textual support,  French

Record number: 33, Textual support number: 1 DEF

Expression employée conventionnellement pour désigner l'éclairement produit par la source d'éclairage, mesuré dans un plan normal aux rayons incidents et passant par le centre de référence.  1, record 33, French, - %C3%A9clairement%20du%20dispositif%20catadioptrique

Record 33,  Textual support,  Spanish

Record 34,  Textual support,  English

Record number: 34, Textual support number: 1 DEF

Ratio of that part of the daylight illuminance at a point on a given plane which is received directly from external reflecting surfaces illuminated directly or indirectly by a sky of assumed or known luminance distribution, to the illuminance on a horizontal plane due to an unobstructed hemisphere of this sky. Contributions of direct sunlight to the luminances of external reflecting surfaces and to the illuminance of the comparison plane are excluded.  1, record 34, English, - externally%20reflected%20component%20of%20daylight%20factor

Record 34,  Textual support,  French

Record number: 34, Textual support number: 1 DEF

Rapport de la partie de l'éclairement naturel en un point d'un plan donné qui est due directement à la réflexion par des surfaces extérieures éclairées directement ou indirectement par un ciel dont la répartition des luminances est supposée ou connue, à l'éclairement sur un plan horizontal provenant sans obstruction d'un hémisphère de ce ciel. Les contributions de la lumière solaire directe à la luminance des surfaces réfléchissantes extérieures et à l'éclairement sur le plan de comparaison sont exclues.  1, record 34, French, - composante%20r%C3%A9fl%C3%A9chie%20externe%20du%20facteur%20de%20lumi%C3%A8re%20du%20jour

Record 34,  Textual support,  Spanish

Record 35,  Textual support,  English

Record number: 35, Textual support number: 1 DEF

Lighting designed to increase the illuminance at certain specified positions, for instance those at which work is carried on.  1, record 35, English, - localized%20lighting

Record 35,  Textual support,  French

Record number: 35, Textual support number: 1 DEF

Éclairage ayant pour but de renforcer l'éclairement en certains points déterminés, ceux par exemple où s'effectue un travail.  1, record 35, French, - %C3%A9clairage%20localis%C3%A9

Record 35,  Textual support,  Spanish

Record 36,  Textual support,  English

Record number: 36, Textual support number: 1 DEF

Ratio of that part of the daylight illuminance at a point on a given plane which is received from internal reflecting surfaces, the sky being of assumed or known luminance distribution, to the illuminance on a horizontal plane due to an unobstructed hemisphere of this sky. Contributions of direct sunlight to the luminances of internal reflecting surfaces and to the illuminance of the comparison plane are excluded.  1, record 36, English, - internally%20reflected%20component%20of%20daylight%20factor

Record 36,  Textual support,  French

Record number: 36, Textual support number: 1 DEF

Rapport de la partie de l'éclairement naturel en un point d'un plan donné qui est due à la réflexion par des surfaces intérieures, le ciel ayant une répartition des luminances supposée ou connue, à l'éclairement sur un plan horizontal provenant sans obstruction d'un hémisphère de ce ciel. Les contributions de la lumière solaire directe à la luminance des surfaces réfléchissantes intérieures et à l'éclairement sur le plan de comparaison sont exclues.  1, record 36, French, - composante%20r%C3%A9fl%C3%A9chie%20interne%20du%20facteur%20de%20lumi%C3%A8re%20du%20jour

Record 36,  Textual support,  Spanish

Record 37,  Textual support,  English

Record number: 37, Textual support number: 1 DEF

Physiological and psychological environment created in a room by light(level and distribution of the illuminance, form and colour of the lighting) and colour(hue, saturation, distribution in the room, colour rendering) in association with the shape of the room.  1, record 37, English, - luminous%20environment

Record 37,  Textual support,  French

Record number: 37, Textual support number: 1 DEF

Ambiance physiologique et psychologique créée dans un local par la lumière (niveau et répartition de l'éclairement, mode d'éclairage et chromaticité) et par la couleur (teinte, saturation, répartition dans l'espace, rendu des couleurs) en liaison avec la forme du local.  1, record 37, French, - ambiance%20lumineuse

Record 37,  Textual support,  Spanish

Record 38,  Textual support,  English

Record number: 38, Textual support number: 1 DEF

Ratio of that part of the daylight illuminance at a point on a given plane which is received directly from a sky of assumed or known luminance distribution, to the illuminance on a horizontal plane due to an unobstructed hemisphere of this sky. Direct sunlight is excluded for both values of illuminance.  1, record 38, English, - sky%20component%20of%20daylight%20factor

Record number: 38, Textual support number: 1 OBS

For a uniform sky and unglazed openings the sky component is identical with the sky factor.  1, record 38, English, - sky%20component%20of%20daylight%20factor

Record 38,  Textual support,  French

Record number: 38, Textual support number: 1 DEF

Rapport de la partie de l'éclairement naturel en un point d'un plan donné qui est reçue directement d'un ciel dont la répartition des luminances est supposée ou connue, à l'éclairement sur un plan horizontal provenant sans obstruction d'un hémisphère de ce ciel. La lumière solaire directe est exclue de ces deux valeurs d'éclairement.  1, record 38, French, - composante%20de%20ciel%20du%20facteur%20de%20lumi%C3%A8re%20du%20jour

Record number: 38, Textual support number: 1 OBS

Pour un ciel uniforme et des ouvertures non vitrées, la composante de ciel est identique au facteur de ciel.  1, record 38, French, - composante%20de%20ciel%20du%20facteur%20de%20lumi%C3%A8re%20du%20jour

Record 38,  Textual support,  Spanish

Record 39,  Textual support,  English

Record number: 39, Textual support number: 1 DEF

Quantity involved in the visual observation of a source of light when viewed directly from such a distance that the apparent diameter is inappreciable... [It] is measured by the illuminance produced by the source on a plane, at the observer's eye, normal to the direction of the source.  1, record 39, English, - point%20brilliance

Record number: 39, Textual support number: 1 OBS

unit: lux lx.  1, record 39, English, - point%20brilliance

Record 39,  Textual support,  French

Record number: 39, Textual support number: 1 DEF

Grandeur intervenant dans l'observation visuelle d'une source de lumière, lorsqu'un observateur la regarde directement d'une distance assez grande pour qu'elle n'ait pas de diamètre apparent appréciable (...) [Elle] se mesure par l'éclairement que produit la source sur un plan passant par la pupille de l'observateur et normal à la direction de la source.  1, record 39, French, - %C3%A9clat%20apparent

Record number: 39, Textual support number: 1 OBS

unité: lux lx.  1, record 39, French, - %C3%A9clat%20apparent

Record 39,  Textual support,  Spanish