The
radiant power at
wavelength
per unit
wavelength interval.
The SI unit is
, but a commonly used unit is
.
Source:
PAC, 1996, 68, 2223
(Glossary of terms used in photochemistry (IUPAC Recommendations 1996))
on page 2276
See also:
PAC, 1985, 57, 105
(Names, symbols, definitions and units of quantities in optical spectroscopy (Recommendations
1984))
on page 112
