An introduction to the study of colour vision (1915)
Parsons, John Herbert, Sir, 1868-1957 · Cambridge [Eng.] University Press; New York, G. P. Putnam's Sons · leaf 95
Colours of pigments do not give the same fields as the spectrumcolours with which they approximately match, since they are impurecolours (Abney^). Fig. 31 gives the data for the fields for the whole range of thespectrum with three difl^erent intensities, the luminosities of the D linebeing 395,… … Fig. 31. The temporal and nasal limits of the fields of vision for spectral colours at threedifferent intensities of illumination. (Abney.) It will be seen that when the temporal field reads 40° the nasalreads 30°, and that as the field increases 7|° on the temporal side itincreases nearly 6° on…
Color vision
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