Standardization field | Electrical engineering
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Technical committee | BAS/TC 30- Electric cables |
Term (EN) | radiance, brightness (deprecated) (symb.: L) |
Definition (EN) | The radiant power in a given direction and at a given point of a real or hypothetical surface transmitted by an elementary beam passing through the given point and propagating in the solid angle containing the given direction divided by the product of the value of this solid angle, the area of section of that beam containing the given point and the cosine of the angle between the normal to that section and the direction of the beam.
Note. — The surface may be that of a source or a surface emitting, receiving or intersecting a light beam. |
Term (FR) | |
Definition (FR) | |
Term (DE) | |
Definition (DE) | |
Term (BS) | |
Definition (BS) | |
Term (HR) | |
Definition (HR) | |
Term (SR) | zračnost, jačina osvjetljenja (zastarjelo) (simbol: L) |
Definition (SR) | Snaga zračenja u datom pravcu i na datoj tački realne ili hipotetičke površine koja prenosi elementarni snop prolazeći kroz datu tačku i prostirući se kroz prostorni ugao sadrži dati pravac podijeljen proizvodom vrijednosti ovog prostornog ugla, dio područja tog snopa koje sadrži datu tačku i kosinusa ugla između normale na tu sekciju i pravca snopa.
Napomena — Površina može biti površina izvora ili površina koja emituje, prima ili siječe snop svjetlosti. |
Date | 2017-08-02 |
Standards | BAS IEC 60050-731:2017 |
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