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 93
,<^ 120,<?^ 135 165 ,T|r 180 165 Fig. 28. The fields of vision for spectral colours with moderate illumination(D lisht:=3-95 foot-candles at the screen). (Al)ncy.) 76 COLOUR VISION Fig. 29 shows the fields with red yellowgreenblue , 670-5 fi/x 589-2 „ 0-21 foot-candle 530 „ 460-3 „ -^vA … 180 Fig. 29. The fields of vision for spectral colours witli low illumination (D light =0-21 foot-candle at the screen). (Abney.) THE FIELD OF VISION FOR COLOURS 77 Fig. 30 shows the fields with complementary colours red .. .. 650-0 /x/x green.. .. 500-2 ,, yellow-green.. 56L4 ,, blue .. .. 460-3 .,
Color vision
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