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Area Lighting / Radiation, quantities and units

IEV ref845-01-37

Symbol
Ee
E

en
irradiance (at a point of a surface)
quotient of the radiant flux dΦe incident on an element of the surface containing the point, by the area dA of that element

Equivalent definition. Integral, taken over the hemisphere visible from the given point, of the expression Le · cos θ · dΩ, where Le is the radiance at the given point in the various directions of the incident elementary beams solid angle dΩ, and θ is the between any of these beams and the normal to the surface at the given point

E e = d Φ e dA = 2πsr L e cosθdΩ MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGe aGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaq Fn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpe WZqaaiqaciWacmGadaGadeaabaGaaqaaaOqaaiaadweadaWgaaWcba GaaeyzaaqabaGccqGH9aqpdaWcaaqaaiaabsgacqqHMoGrdaWgaaWc baGaaeyzaaqabaaakeaacaqGKbGaamyqaaaacqGH9aqpdaWdraqaai aadYeadaWgaaWcbaGaaeyzaaqabaGccqGHflY1caqGJbGaae4Baiaa bohacqaH4oqCcqGHflY1caqGKbGaeuyQdCfaleaacaaIYaacdaGae8 hWdaNaae4CaiaabkhaaeqaniabgUIiYdaaaa@5272@

unit: W • m-2


fr
éclairement énergétique (en un point d'une surface) m
quotient du flux énergétique dΦe reçu par un élément de la surface contenant le point, par l'aire dA de cet élément

Définition équivalente. Intégrale, étendue à l'hémisphère visible depuis le point donné, de l'expression Le · cos θ · dΩ, où Le est la luminance énergétique au point donné dans les diverses directions des faisceaux élémentaires incidents d'angle solide dΩ, et θ est l'angle entre chacun de ces faisceaux et la normale à la surface au point donné

E e = d Φ e dA = 2πsr L e cosθdΩ MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGe aGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaq Fn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpe WZqaaiqaciWacmGadaGadeaabaGaaqaaaOqaaiaadweadaWgaaWcba GaaeyzaaqabaGccqGH9aqpdaWcaaqaaiaabsgacqqHMoGrdaWgaaWc baGaaeyzaaqabaaakeaacaqGKbGaamyqaaaacqGH9aqpdaWdraqaai aadYeadaWgaaWcbaGaaeyzaaqabaGccqGHflY1caqGJbGaae4Baiaa bohacqaH4oqCcqGHflY1caqGKbGaeuyQdCfaleaacaaIYaacdaGae8 hWdaNaae4CaiaabkhaaeqaniabgUIiYdaaaa@5272@

unité: W • m-2


ar
إشعاعية (كثافة الإشعاع الساقط) (عند نقطة السطح)

de
Bestrahlungsstärke (an einem Punkt einer Oberfläche), f

es
irradiancia

fi
irradianssi

it
irradiamento

ko
방사 조도, <표면의 한점>

ja
放射照度

no
nb irradians, innstrålingstetthet

nn irradians, innstrålingstetthet

pl
natężenie napromienienia (w danym punkcie powierzchni)

pt
irradiância (num ponto de uma superfície)

sr
озрачивање , <у датој тачки површине> с јд
озрачење, с јд
ирадијанција , ж јд

sv
irradians

Publication date: 1987
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