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Area Lighting / Emission, optical properties of materials

IEV ref845-04-78

Symbol
a(λ)

en
spectral linear absorption coefficient (at a point in an absorbing medium, for a collimated beam of radiation)
quotient of the relative decrease caused by absorption of the spectral concentration of the radiant flux Φe, λ of a collimated beam during its propagation along an elementary length dl at the point considered, by the length dl

a( λ )= 1 Φ e,λ d Φ e,λ dl MathType@MTEF@5@5@+=feaagCart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHXgaruavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGeaGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaqFn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpeWZqaaiqaciWacmGadaGadeaabaGaaqaaaOqaaiaadggadaqadaqaaiabeU7aSbGaayjkaiaawMcaaiabg2da9maalaaabaGaaGymaaqaaiabfA6agnaaBaaaleaacaqGLbGaaeilaiabeU7aSbqabaaaaOGaeyyXIC9aaSaaaeaacaqGKbGaeuOPdy0aaSbaaSqaaiaabwgacaqGSaGaeq4UdWgabeaaaOqaaiaabsgacaWGSbaaaaaa@4A53@

unit : m -1


fr
coefficient d'absorption linéique spectral (en un point d'un milieu absorbant pour un faisceau quasi parallèle de rayonnement) m
quotient de la diminution relative, produite par absorption, de la densité spectrale du flux énergétique Φe, λ d'un faisceau quasi parallèle pendant un trajet élémentaire au point considéré, par la longueur dl de ce trajet

a( λ )= 1 Φ e,λ d Φ e,λ dl MathType@MTEF@5@5@+=feaagCart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHXgaruavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGeaGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaqFn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpeWZqaaiqaciWacmGadaGadeaabaGaaqaaaOqaaiaadggadaqadaqaaiabeU7aSbGaayjkaiaawMcaaiabg2da9maalaaabaGaaGymaaqaaiabfA6agnaaBaaaleaacaqGLbGaaeilaiabeU7aSbqabaaaaOGaeyyXIC9aaSaaaeaacaqGKbGaeuOPdy0aaSbaaSqaaiaabwgacaqGSaGaeq4UdWgabeaaaOqaaiaabsgacaWGSbaaaaaa@4A53@

unité : m-1


ar
معامل الامتصاص الطيفي الخطي (لنقطة على سطح ماص ومنتشر لحزمة أشعة متوازية)

de
spektraler Absorptionskoeffizient (an einem Punkt eines absorbierenden Mediums für ein quasiparalleles Strahlenbündel), m

es
coeficiente de absorción lineal espectral

fi
spektrinen absorptiokerroin

it
coefficiente spettrale lineare di assorbimento (di un punto di un mezzo assorbente e diffondente per un fascio di radiazione collimato)

ko
분광 선형 흡수계수, 흡수 매체

ja
分光線形吸収係数

no
nb spektral lineær absorpsjonskoeffisient

nn spektral lineær absorpsjonskoeffisient

pl
współczynnik pochłaniania liniowego widmowy (w punkcie ośrodka pochłaniającego, dla równoległej wiązki promieniowania)

pt
coeficiente de absorção espectral linear (num ponto de um meio absorvente, para um feixe quase paralelo de radiação)

sv
absorptionskoefficient

Publication date: 1987
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