Spectral radiant energy per time interval (spectral radiant power,
)
absorbed by a system per volume,
.
SI unit is
;
common unit is
.
)
absorbed by a system per volume,
.
SI unit is
;
common unit is
.
Note:
Mathematical expression:
,
where
is the absorbance at wavelength
and superscript
(zero) indicates incident radiant power.
,
where
is the absorbance at wavelength
and superscript
(zero) indicates incident radiant power.
Source:
PAC, 2007, 79, 293
(Glossary of terms used in photochemistry, 3rd edition (IUPAC Recommendations 2006))
on page 297