Spectral decomposition of high pressure sodium lamp
photonVis_e ⇌ 0.015196534268239 photon437_u + 0.032805456604757 photon438_u + 0.027719995714444 photon450_h + 0.058193837857734 photon490_s + 0.242892771920299 photon646_h + 0.051456782792204 photon673_u + 0.053696898066714 photon680_u