spectral radiant energy, \(Q_{\lambda}\)

https://doi.org/10.1351/goldbook.ST07480
Derivative of @R05039@, \(Q\), with respect to @W06659@ \(\lambda \). SI unit is \(\mathrm{J}\ \mathrm{m}^{- 1}\); common unit is \(\mathrm{J}\ \mathrm{nm}^{- 1}\).
Source:
PAC, 2007, 79, 293. (Glossary of terms used in photochemistry, 3rd edition (IUPAC Recommendations 2006)) on page 425 [Terms] [Paper]