TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

REFLECTANCE FACTOR [11 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 - external organization data 2009-08-04

English

Subject field(s)
  • Compartment - ISO/IEC JTC 1 Information Technology Vocabulary
Universal entry(ies)
01.02.20 (19762)
ISO/IEC standard entry number
DEF

ratio of the radiant or luminous flux reflected by the sample in the directions delimited by the given cone to that reflected in the same directions by a perfect reflecting diffuser identically irradiated or illuminated

OBS

Adapted from IEC 60050-845, 845-04-64.

OBS

Perfect reflecting diffuser - ideal isotropic diffuser with a reflectance equal to 1.

OBS

The radiant power reflected by a magnesium oxide or barium sulphate photometric standard is called reference reflected flux.

OBS

In AIDC techniques, reflectance factor is sometimes called reflectance.

OBS

reflectance factor : term and definition standardized by ISO/IEC [ISO/IEC 19762-1 : 2008].

French

Spanish

Save record 1

Record 2 - external organization data 2009-08-04

English

Subject field(s)
  • Compartment - ISO/IEC JTC 1 Information Technology Vocabulary
Universal entry(ies)
02.02.07 (19762)
ISO/IEC standard entry number
DEF

ratio of the reflected radiant or luminous flux to the incident flux in incident radiation of given spectral composition, polarization and geometrical distribution [IEC 50 (845), 845-04-58]

OBS

Reflectance(sometimes in AIDC techniques called reflectance factor) is measured on a scale of 0 to 1, at a wavelength or bandwidth of light(spectral response) specified in the particular application specification.

OBS

Barium sulphate or magnesium oxide are used as ’near perfect’ reference white standards (a perfect standard of pure white would have a reflectance of 1,00 at any wavelength of light). The absence of any light in a vacuum is used as reference black standard.

OBS

Samples (such as substrates, inks, etc.) are tested against the standards under similar illumination.

OBS

reflectance: term and definition standardized by ISO/IEC [ISO/IEC 19762-2:2008].

French

Spanish

Save record 2

Record 3 2006-11-15

English

Subject field(s)
  • Geochemistry
CONT

... the Early Cretaceous and Carboniferous spores appear more organically mature than the remainder of the assemblage, a factor that may produce spurious organic maturity values(e. g. vitrinite/huminite reflectance).

OBS

organic maturity value: term usually used in the plural (organic maturity values).

OBS

organic maturity values: term used at Natural Resources Canada - Earth Sciences Sector.

Key term(s)
  • organic maturity values

French

Domaine(s)
  • Géochimie
OBS

chiffre de la maturité organique : terme généralement utilisé au pluriel (chiffres de la maturité organique).

OBS

chiffres de la maturité organique : terme en usage à Ressources naturelles Canada - Secteur des sciences de la Terre.

Key term(s)
  • chiffres de la maturité organique

Spanish

Save record 3

Record 4 2006-08-08

English

Subject field(s)
  • Atmospheric Physics
  • Space Physics
DEF

Ratio of the radiant or luminous flux reflected by a particular surface to that incident on it.

OBS

Reflectance : formerly reflection factor.

OBS

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

PHR

Bidirectional reflectance factor.

PHR

Ground, plant, rock, snow, water reflectance.

Key term(s)
  • factor of reflection

French

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

Rapport du flux énergétique ou lumineux réfléchi par une surface donnée au flux incident sur celle-ci.

OBS

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

PHR

Réflectance bidirectionnelle.

PHR

Réflectance de la neige, de l'eau, des plantes, des roches, du sol.

Spanish

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

Relación entre el flujo radiante o luminoso reflejado por una superficie dada y el flujo que incide sobre ella.

Save record 4

Record 5 2003-11-17

English

Subject field(s)
  • Optics
DEF

The calculation and measurement of quantities describing light, such as luminous intensity, luminous flux, luminous flux density, light distribution, color, absorption factor, spectral distribution, and the reflectance and the transmittance of light; sometimes taken to include measurement of near-infrared and near-ultraviolet radiation as well as visible light.

French

Domaine(s)
  • Optique
DEF

Partie de la physique qui s'occupe de la mesure des quantités de lumière et des propriétés des corps relatives à la transmission, à la réflexion, à la diffusion, etc., de la lumière.

Spanish

Campo(s) temático(s)
  • Óptica
DEF

Parte de la óptica que trata de las leyes relativas a la intensidad de la luz y de los métodos para medirla.

Save record 5

Record 6 1998-11-16

English

Subject field(s)
  • Scientific Measurements and Analyses
  • Pulp and Paper
DEF

For white and near-white papers and pulps the reflectance factor relative to a perfect reflecting diffuser at an effective wavelength of 457 nm as determined with an instrument employing diffuse illumination and normal viewing. [Definition standardized by ISO. ]

OBS

diffuse blue reflectance factor; ISO brightness : terms standardized by ISO.

French

Domaine(s)
  • Mesures et analyse (Sciences)
  • Pâtes et papier
DEF

Pour les pâtes et les papiers blancs et voisins du blanc, facteur de réflectance relatif au diffuseur parfait par réflexion à une longueur d'onde efficace de 457 nm, déterminé au moyen d'un instrument utilisant un éclairage diffus et une observation normale et conforme aux méthodes d'essai normalisées. [Définition normalisée par l'ISO.]

OBS

facteur de réflectance diffuse dans le bleu : terme normalisé par l'ISO et l'AFNOR. Degré de blancheur ISO : terme normalisé par l'ISO.

Spanish

Save record 6

Record 7 1998-09-15

English

Subject field(s)
  • Optics
  • Properties of Paper
  • Graphic Arts and Printing
DEF

The colour depth(optical density) of a printed image. It may be measured directly by a user-friendly optical density meter. Measured by colourimeter, it is calculated as the logarithm to the base ten of the ratio of the Y value(the luminous reflectance factor of unprinted paper) to the luminous reflectance factor of the printed paper with an opaque pad of the unprinted paper as background.

French

Domaine(s)
  • Optique
  • Propriétés des papiers
  • Imprimerie et arts graphiques
DEF

Densité optique exprimée par le logarithme du rapport de la réflectance du papier vierge à celle du papier imprimé.

Spanish

Save record 7

Record 8 1997-04-17

English

Subject field(s)
  • Food Industries
  • Milling and Cereal Industries
  • tangential abrasive dehulling device
CONT

A simple dehulling procedure for assessing dehulling quality in a flaxseed breeding program has been developed using the tangential abrasive dehulling device.

CONT

The potential for near-infrared(NIR) reflectance spectroscopy to predict corn dry-milling quality has been investigated. NIR spectra were obtained from samples of whole-kernel yellow dent corn. Dry-milling quality of the samples was evaluated with a Tangential Abrasive Dehulling Device(TADD), and by a short-flow laboratory milling procedure that allowed calculation of a milling evaluation factor(MEF).(Data Base).

French

Domaine(s)
  • Industrie de l'alimentation
  • Minoterie et céréales

Spanish

Save record 8

Record 9 1991-05-23

English

Subject field(s)
  • Scientific Instruments
  • Optics
CONT

Comparative color analysis of shoe cream was done on a reflectance colorimeter showing that the total color strength in each product is equivalent.

OBS

"reflectance", [synonym :"reflexion factor"] : The ratio of energy returning from the surface of a sample to that returning from a reference surface, as measured by a specific apparatus. [Source: STROP 1974 p. 163, on a Termium record.

French

Domaine(s)
  • Instruments scientifiques
  • Optique
OBS

Spectrophotométrie. (...) pour la couleur de surface d'un objet, il est nécessaire de préciser la source étalon utilisée pour l'éclairer, et on donnera aussi la réflectance Y, la valeur 100 (ou 99) caractérisant le diffuseur blanc parfait.

OBS

Couleur d'une surface. (...) Y représente directement, en %, la réflectance visuelle (ou encore facteur de réflexion visuel) de l'échantillon considéré.

OBS

Selon Jacques Demers, traducteur physicien du Bureau de la traduction à Montréal, les expressions abstraites se forment à l'aide de la préposition "par", tandis que les appareils sont désignés par des expressions formées à l'aide de la préposition "à". P. EX. : "spectrophotométrie par réflectance".

Spanish

Save record 9

Record 10 1991-02-22

English

Subject field(s)
  • Photography
  • Pulp and Paper
  • General Scientific and Technical Vocabulary
DEF

The ratio of energy returning from the surface of a sample to that returning from a reference surface, as measured by a specific apparatus.

OBS

In photographic applications, the reference is often the base of the photographic printing material.

OBS

The term reflection factor is now recommended instead of the more usual reflectance.

French

Domaine(s)
  • Photographie
  • Pâtes et papier
  • Vocabulaire technique et scientifique général
DEF

Quantité de lumière incidente, d'une longueur d'onde déterminée, renvoyée par une surface.

OBS

Rapport du flux réfléchi au flux incident.

Spanish

Save record 10

Record 11 1989-09-06

English

Subject field(s)
  • Pulp and Paper
DEF

For white and near-white papers and pulps the reflectance factor relative to a perfect reflecting diffuser at an effective wavelength of 457 nm as determined with an instrument employing illumination at 45 ° and normal viewing.

OBS

This term has been standardized by ISO.

French

Domaine(s)
  • Pâtes et papier
DEF

Pour les pâtes et les papiers blancs et voisins du blanc, facteur de réflectance relatif au diffuseur parfait par réflexion à une longueur d'onde efficace de 457 nm, déterminé au moyen d'un instrument utilisant un éclairage à 45 ° et une observation normale et conforme aux méthodes d'essai normalisées.

OBS

Terme normalisé par l'ISO et l'AFNOR.

Spanish

Save record 11

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