radiant power, \(P\)

https://doi.org/10.1351/goldbook.R05046
@P04792@ emitted, transferred or received as radiation. SI unit is \(\text{J s}^{-1} = \text{W}\).
Notes:
  1. Mathematical definition: \(P = \text{d}Q/\text{d}t\). If the @R05039@ \(Q\) is constant over the time interval, \(P = Q/t\).
  2. In @R05115@, flux  (\(\varPhi\)) is used with the same units as \(P\). The symbol \(\varPhi\) is reserved for @Q04991@ in @P04588@. Therefore, the use of flux (\(\varPhi\)) is not recommended.
Source:
PAC, 2007, 79, 293. (Glossary of terms used in photochemistry, 3rd edition (IUPAC Recommendations 2006)) on page 410 [Terms] [Paper]
Cite as: IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997). Online version (2019-) created by S. J. Chalk. ISBN 0-9678550-9-8. https://doi.org/10.1351/goldbook.
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Last revised: February 24, 2014