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 104
ven by a radialslit in a rotating disc the image is spread out into a sector, varying inwidth according to the rapidity of rotation. This is due to the per-sistency of the sensation beyond the time of stimulation. The sector isnot of uniform brightness, but is marked with alternate light and… … Fig. 36. Diagram illustrating the primary response to a single momentary stimulus.The series of pulses of sensation commences at a and lasts through a period of aboutf sec, represented by a—i. The height to which each curve rises represents theintensity of the pulse of sensation. The effects of a…
Color vision
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