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 @A00543@.

Mathematical definition: \(N_{\text{p}} = Q/h\nu\) for monochromatic radiation of frequency \(\nu\), with \(Q\) the @R05039@.

**Note:**

Mathematical definition: \(N_{\text{p}} = Q/h\nu\) for monochromatic radiation of frequency \(\nu\), with \(Q\) the @R05039@.