TERMIUM Plus®

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COMPOSANTE CIEL FACTEUR LUMIERE JOUR [1 record]

Record 1 1985-10-01

English

Subject field(s)
  • Optics
  • Scientific Measurements and Analyses
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.

OBS

For a uniform sky and unglazed openings the sky component is identical with the sky factor.

French

Domaine(s)
  • Optique
  • Mesures et analyse (Sciences)
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.

OBS

Pour un ciel uniforme et des ouvertures non vitrées, la composante de ciel est identique au facteur de ciel.

Spanish

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