Fig. 6.
Ratio of emission spectra ISePS to ISPS, which use the SePS method and the SPS method, respectively, during the precalculation. The SPS method reaches increasingly lower intensities for increasing sphere sizes 
(i.e., for higher values of k). Shown in brackets is the total loss of emitted luminosity when using the SPS method compared to the SePS method. For details, see Sect. 3.2.1.
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