For example, tungsten/incandescent, “cool white” fluorescent, etc. sources have fairly well known spectral energy distributions which can be used to calculate {HEAD ~ the chromaticity coordinates} of {TAIL ~ the ambient} which is adding to the light emitted from the display 
of
For example , tungsten / incandescent , “ cool white ” fluorescent , etc . sources have fairly well known spectral energy distributions which can be used to calculate { HEAD ~ the chromaticity coordinates } of { TAIL ~ the ambient } which is adding to the light emitted from the display
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH