photon number, \(N_{\text{p}}\)

https://doi.org/10.1351/goldbook.PT07459
Total number of photons calculated as \(N_{\text{p}} = n_{\text{p}}\, N_{\text{A}}\) with \(N_{\text{p}}\) the amount of photons in einsteins and \(N_{\text{A}}\) the @[email protected]
Note:
Mathematical definition: \(N_{\text{p}} = Q/h\nu\) for monochromatic radiation of frequency \(\nu\), with \(Q\) the @[email protected]
Source:
PAC, 2007, 79, 293. (Glossary of terms used in photochemistry, 3rd edition (IUPAC Recommendations 2006)) on page 396 [Terms] [Paper]