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 106
intensity and does not then jump the fovea. RECURRENT VISION 89 I have hitherto followed McDougalls excellent paper. It will bereadily appreciated that since the response differs in the number andcharacter of the pulses of sensation according to the intensity and natureof the light stimulus, and… … Fig. .37. Appearance of a narrow slit, 2° to 5^ in width, in a large disc, rotating at onerevolution per 3, before a milk-glass illuminated with one acetylene-gas burner, asseen by the light-adapted eye which has been kept covered for about three minutesand then fixed upon any point in or near the…
Color vision
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