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

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