TERMIUM Plus®
The Government of Canada’s terminology and linguistic data bank.
POINT ACHROMATIQUE [7 records]
Record 1 - internal organization data 2006-04-05
Record 1, English
Record 1, Subject field(s)
- Optics
Record 1, Main entry term, English
- excitation purity
1, record 1, English, excitation%20purity
correct, standardized
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 OBS
Quantity P as defined by the relation "P equals (A - B)/(C - B)", where A is one of the chromaticity coordinates of the considered colour stimulus, B is the analogous chromaticity coordinate of the specified achromatic light stimulus, and C is the analogous chromaticity coordinate of the monochromatic light stimulus having the same wavelength as the dominant wavelength of the considered colour stimulus (cf. CIEVO 1970, p. 63). 2, record 1, English, - excitation%20purity
Record number: 1, Textual support number: 2 OBS
excitation purity: term standardized by CIE. 2, record 1, English, - excitation%20purity
Record 1, French
Record 1, Domaine(s)
- Optique
Record 1, Main entry term, French
- pureté d’excitation
1, record 1, French, puret%C3%A9%20d%26rsquo%3Bexcitation
correct, feminine noun, standardized
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Dans un système trichromatique donné rapporté au point achromatique spécifié A, rapport des rayons vecteurs issus de A et ayant respectivement pour extrémités les points de couleur du stimulus donné et de la radiation dominante correspondante [lambda]. [Définition normalisée par l'AFNOR. ] 2, record 1, French, - puret%C3%A9%20d%26rsquo%3Bexcitation
Record number: 1, Textual support number: 1 OBS
Pluriel : des stimulus, des stimuli. 3, record 1, French, - puret%C3%A9%20d%26rsquo%3Bexcitation
Record number: 1, Textual support number: 2 OBS
stimulus (pl.) : Cette graphie, puisée des Rectifications de l’orthographe recommandées par le Conseil supérieur de la langue française, est attestée dans le Petit Robert (2006). 4, record 1, French, - puret%C3%A9%20d%26rsquo%3Bexcitation
Record number: 1, Textual support number: 3 OBS
pureté d’excitation : terme normalisé par la CIE et l’AFNOR. 5, record 1, French, - puret%C3%A9%20d%26rsquo%3Bexcitation
Record 1, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 2004-03-12
Record 2, English
Record 2, Subject field(s)
- Optics
Record 2, Main entry term, English
- chromatic aberration
1, record 2, English, chromatic%20aberration
correct
Record 2, Abbreviations, English
Record 2, Synonyms, English
Record 2, Textual support, English
Record number: 2, Textual support number: 1 DEF
The lens aberration resulting from the normal increase in refractive index of all common materials toward the blue end of the spectrum. 2, record 2, English, - chromatic%20aberration
Record number: 2, Textual support number: 1 CONT
Chromatic aberration results from material dispersion. Because different colors of light refract by different amounts, an image point formed by light of one color does not coincide with the corresponding image point formed by light of a different color. This is not a geometrical aberration. 3, record 2, English, - chromatic%20aberration
Record 2, French
Record 2, Domaine(s)
- Optique
Record 2, Main entry term, French
- aberration chromatique
1, record 2, French, aberration%20chromatique
correct, feminine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
Record 2, Textual support, French
Record number: 2, Textual support number: 1 CONT
Lorsque vous observez le passage de la lumière blanche à travers un prisme, vous pouvez remarquer qu'elle se décompose en différentes couleurs. La lumière blanche est en réalité un mélange de toutes les couleurs, celles de l'arc en ciel. Or une lentille simple se comporte localement comme un prisme et a donc tendance à séparer les couleurs. L'image n’ est alors nette que pour le bleu, que pour le vert ou que pour le rouge. C'est l'aberration chromatique. Afin de palier ce problème, qui rend donc les images floues, on adjoint plusieurs lentilles de nature différentes permettant ainsi de focaliser la plupart des couleurs en un même point. Si l'objectif possède deux lentilles, on parle de système achromatique et s’il en possède trois, de système apochromatique. 2, record 2, French, - aberration%20chromatique
Record 2, Spanish
Record 2, Textual support, Spanish
Record 3 - internal organization data 2001-07-06
Record 3, English
Record 3, Subject field(s)
- Paints and Varnishes (Industries)
Record 3, Main entry term, English
- bleaching
1, record 3, English, bleaching
correct
Record 3, Abbreviations, English
Record 3, Synonyms, English
- fading 1, record 3, English, fading
correct, see observation, noun
Record 3, Textual support, English
Record number: 3, Textual support number: 1 DEF
Loss of color of a paint or varnish. This may be due to internal chemical or physical action in the paint itself, to influences from the surface on which it is applied or to weathering or contamination from the atmosphere. 1, record 3, English, - bleaching
Record number: 3, Textual support number: 1 OBS
fading: subjective term used to describe the lightening of the color of a pigmented paint following exposure to the effects of light, heat, time, chemicals, etc. 1, record 3, English, - bleaching
Record 3, French
Record 3, Domaine(s)
- Peintures et vernis (Industries)
Record 3, Main entry term, French
- blanchiment
1, record 3, French, blanchiment
correct, masculine noun, standardized
Record 3, Abbreviations, French
Record 3, Synonyms, French
Record 3, Textual support, French
Record number: 3, Textual support number: 1 DEF
Altération de la couleur caractérisée par un rapprochement du point de couleur vers le point achromatique spécifié dans le solide des couleurs. [Définition normalisée par l'AFNOR et reproduite avec son autorisation. ] 1, record 3, French, - blanchiment
Record number: 3, Textual support number: 1 OBS
Le blanchiment peut se présenter par plages non uniformes. Le blanchiment peut être le résultat «apparent» d’autres altérations spécifiques, telles que l’encrassement ou le farinage. Le blanchiment peut être également dû à une diffusion d’eau dans le feuil quand sa réticulation est insuffisante ou quand la macromolécule comporte des groupes OH à sa périphérie; ce phénomène peut être irréversible. [Observation reproduite avec l’autorisation de l’AFNOR.] 1, record 3, French, - blanchiment
Record number: 3, Textual support number: 2 OBS
blanchiment : terme normalisé par l’AFNOR. 2, record 3, French, - blanchiment
Record 3, Spanish
Record 3, Textual support, Spanish
Record 4 - internal organization data 1998-03-20
Record 4, English
Record 4, Subject field(s)
- Paints and Varnishes (Industries)
Record 4, Main entry term, English
- darkening
1, record 4, English, darkening
proposal, noun
Record 4, Abbreviations, English
Record 4, Synonyms, English
Record 4, Textual support, English
Record number: 4, Textual support number: 1 OBS
darken: To grow dark or darker by shading or color. 2, record 4, English, - darkening
Record 4, French
Record 4, Domaine(s)
- Peintures et vernis (Industries)
Record 4, Main entry term, French
- noircissement
1, record 4, French, noircissement
correct, masculine noun, standardized
Record 4, Abbreviations, French
Record 4, Synonyms, French
Record 4, Textual support, French
Record number: 4, Textual support number: 1 DEF
Altération de couleur caractérisée par une diminution de la luminance lumineuse Y conjuguée éventuellement à un déplacement du point de couleur vers le point achromatique. [Définition normalisée par l'AFNOR. ] 1, record 4, French, - noircissement
Record number: 4, Textual support number: 1 OBS
Le noircissement peut provenir : -soit d’une dégradation du pigment sous l’action du milieu ambiant, -soit d’un dépôt de souillures superficielles (encrassement) provenant de l’environnement, -soit d’un développement fongique (moisissures). 1, record 4, French, - noircissement
Record number: 4, Textual support number: 2 OBS
noircissement : terme normalisé par l’AFNOR. 2, record 4, French, - noircissement
Record number: 4, Textual support number: 3 OBS
Définition et observation reproduites avec la permission de l’AFNOR. 2, record 4, French, - noircissement
Record 4, Spanish
Record 4, Textual support, Spanish
Record 5 - internal organization data 1998-03-20
Record 5, English
Record 5, Subject field(s)
- Optics
Record 5, Main entry term, English
- achromatic point
1, record 5, English, achromatic%20point
correct
Record 5, Abbreviations, English
Record 5, Synonyms, English
Record 5, Textual support, English
Record number: 5, Textual support number: 1 CONT
Achromatic point: In accepted colorimetric sense: ... For surface colours the light source serving as illuminant is taken as achromatic. 1, record 5, English, - achromatic%20point
Record 5, French
Record 5, Domaine(s)
- Optique
Record 5, Main entry term, French
- point achromatique
1, record 5, French, point%20achromatique
correct, masculine noun, standardized
Record 5, Abbreviations, French
Record 5, Synonyms, French
Record 5, Textual support, French
Record number: 5, Textual support number: 1 DEF
Dans un système trichromatique de référence donné, point de couleur du stimulus achromatique spécifié. [Définition normalisée par l'AFNOR. ] 1, record 5, French, - point%20achromatique
Record number: 5, Textual support number: 1 OBS
point achromatique : terme normalisé par l'AFNOR. 2, record 5, French, - point%20achromatique
Record 5, Spanish
Record 5, Textual support, Spanish
Record 6 - internal organization data 1998-03-20
Record 6, English
Record 6, Subject field(s)
- Optics
Record 6, Main entry term, English
- line of constant hue
1, record 6, English, line%20of%20constant%20hue
correct
Record 6, Abbreviations, English
Record 6, Synonyms, English
Record 6, Textual support, English
Record number: 6, Textual support number: 1 CONT
... the lines of constant hue appear to be curved lines. These lines are slightly different for the various values. The lines of constant chroma are closed curves, also different for the various values, and coinciding with neither the curves of constant colorimetric purity nor those of constant excitation purity. 1, record 6, English, - line%20of%20constant%20hue
Record 6, French
Record 6, Domaine(s)
- Optique
Record 6, Main entry term, French
- rayon isotone
1, record 6, French, rayon%20isotone
correct, masculine noun, standardized
Record 6, Abbreviations, French
Record 6, Synonyms, French
Record 6, Textual support, French
Record number: 6, Textual support number: 1 DEF
Dans un diagramme de chromaticité, rayon issu du point achromatique spécifié sur lequel sont alignés tous les points de couleur des stimuli de même dominante. [Définition normalisée par l'AFNOR. ] 1, record 6, French, - rayon%20isotone
Record number: 6, Textual support number: 1 OBS
rayon isotone : terme normalisé par l’AFNOR. 2, record 6, French, - rayon%20isotone
Record 6, Spanish
Record 6, Textual support, Spanish
Record 7 - internal organization data 1987-11-20
Record 7, English
Record 7, Subject field(s)
- Physics
Record 7, Main entry term, English
- isotone 1, record 7, English, isotone
Record 7, Abbreviations, English
Record 7, Synonyms, English
Record 7, Textual support, English
Record 7, French
Record 7, Domaine(s)
- Physique
Record 7, Main entry term, French
- isotone
1, record 7, French, isotone
correct, adjective
Record 7, Abbreviations, French
Record 7, Synonyms, French
Record 7, Textual support, French
Record number: 7, Textual support number: 1 DEF
Dans un diagramme de chromaticité, se dit d’un rayon issu du point achromatique spécifié, sur lequel sont alignés tous les points de couleur des stimuli de même dominante. 1, record 7, French, - isotone
Record 7, Spanish
Record 7, Textual support, Spanish
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