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 96
ression the angle of field diminishes inarithnietical progression. The effect of the area of the retina stimulated upon the size of thefield may be most conveniently considered here. Charpentieri foundthat for white the size was immaterial so long as it exceeded a diameterof about 017 mm. If it… … Blue. Ynlow.Red. Gi-een. Intensity Fig. 32. The temporal and nasal limits of the fields of vision for four spectral colours atdifferent intensities of illumination. (Abney.) For colours Abney^ found that between apertures subtending 4° 28and 10 the fields decrease in extent in such a manner that…
Color vision
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