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ILUMINANCIA [5 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2017-05-12

English

Subject field(s)
  • Signalling and Illumination (Air Transport)
DEF

The smallest illuminance required by the eye to make a light source visible.

OBS

visual threshold of illumination: term and definition officially approved by the International Civil Aviation Organization (ICAO).

French

Domaine(s)
  • Signalisation (Transport aérien)
DEF

Éclairement le plus faible nécessaire à l'œil pour déceler une source lumineuse.

OBS

seuil visuel d'éclairement : terme et définition uniformisés par l'Organisation de l'aviation civile internationale (OACI).

Spanish

Campo(s) temático(s)
  • Señales e iluminación (Transporte aéreo)
DEF

La iluminancia mínima requerida por el ojo para hacer visible una fuente luminosa.

OBS

umbral visual de iluminación: término y definición aceptados oficialmente por la Organización de Aviación Civil Internacional (OACI).

Save record 1

Record 2 2007-02-05

English

Subject field(s)
  • Space Physics
  • Optics
  • Atmospheric Physics
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.

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.

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.

OBS

"Illumination" is a deprecated term for "illuminance".

OBS

illuminance: term officially approved by the RADARSAT-2 Terminology Approval Group (RTAG).

French

Domaine(s)
  • Physique spatiale
  • Optique
  • Physique de l'atmosphère
DEF

Quotient du flux lumineux reçu par un élément infinitésimal d'une surface entourant le point considéré, par l'aire de cet élément.

OBS

Le symbole de l'éclairement est Er.

OBS

Les unités du Système international (SI) : [...] l'éclairement lumineux E, dont l'unité est le lux (lm/m²) [...]

OBS

éclairement lumineux : terme uniformisé par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR).

Spanish

Campo(s) temático(s)
  • Física espacial
  • Óptica
  • Física de la atmósfera
DEF

Cociente entre el flujo luminoso incidente sobre un elemento infinitesimal de superficie que contiene el punto considerado por el área de dicho elemento.

Save record 2

Record 3 2006-01-10

English

Subject field(s)
  • Metrology and Units of Measure
  • Optics
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.

CONT

A level of illumination of one lux means that one lumen of light is distributed over every square metre of surface.

OBS

lux; lx: term and abbreviation officially approved by the International Civil Aviation Organization (ICAO).

French

Domaine(s)
  • Unités de mesure et métrologie
  • Optique
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.

OBS

lux : terme recommandé par l'Office de la langue française (OLF).

OBS

lux; lx: terme et abréviation uniformisés par l'Organisation de l'aviation civile internationale (OACI).

Spanish

Campo(s) temático(s)
  • Metrología y unidades de medida
  • Óptica
DEF

Unidad de iluminancia igual a la iluminación producida por un flujo luminoso de 1 lumen distribuido uniformemente en una superficie de 1 m².

OBS

lux; lx: término y abreviatura aceptados oficialmente por la Organización de Aviación Civil Internacional (OACI).

Save record 3

Record 4 2003-12-22

English

Subject field(s)
  • Scientific Measurements and Analyses
  • Optics
  • Astrophysics and Cosmography
DEF

Product of an illuminance and its duration.

French

Domaine(s)
  • Mesures et analyse (Sciences)
  • Optique
  • Astrophysique et cosmographie
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.]

OBS

lumination : terme normalisé par l'AFNOR.

Spanish

Campo(s) temático(s)
  • Medición y análisis (Ciencias)
  • Óptica
  • Astrofísica y cosmografía
DEF

Producto de la iluminancia por su duración.

Save record 4

Record 5 2003-07-16

English

Subject field(s)
  • Meteorology
  • Optics
DEF

Illuminance without any contribution from the direct solar radiation.

OBS

Illumination is a deprecated term for Illuminance.

French

Domaine(s)
  • Météorologie
  • Optique
DEF

Éclairement lumineux sans contribution du rayonnement solaire direct.

Spanish

Campo(s) temático(s)
  • Meteorología
  • Óptica
DEF

Iluminancia a la cual no contribuye la radiación solar directa.

Save record 5

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