spectral radiant energy, Qλ 

https://doi.org/10.1351/goldbook.ST07480
Derivative of radiant energy, Q, with respect to wavelength λ. SI unit is J m−1; common unit is J nm−1.
Source:
PAC, 2007, 79, 293. (Glossary of terms used in photochemistry, 3rd edition (IUPAC Recommendations 2006)) on page 425 [Terms] [Paper]
Citation: 'spectral radiant energy' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.ST07480 RIS BibTex EndNote
Div. IIIPDFTextXMLJSONQuantity
Last revised: February 24, 2014