A single channel device is also unable to detect {HEAD ~ changes} in {TAIL ~ the chromaticity} of one or more of the channels of the display if the spectral energy distribution of said channel changes in shape 
in
A single channel device is also unable to detect { HEAD ~ changes } in { TAIL ~ the chromaticity } of one or more of the channels of the display if the spectral energy distribution of said channel changes in shape
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH