Researches in colour vision [electronic resource] : and the trichromatic theory (1913)
Abney, William de Wiveleslie, Sir, 1843-1920, Parsons, John Herbert, Sir, 1868-1957, donor, Institute of Ophthalmology, University College, London. Library Services · London : Longmans, Green and Co. · leaf 45
ON PHENOMENA IN VISION 25 was about once a second, the disc presented an appear- ance as given in the figure. He says that the … Fig. 7. which is experienced after the extinction of a light is for a small fraction of a second more intense than common darkness. He describes experiments to show this abnormal blackness. Finally, he gives a diagram of the different effects on the retina Light On Light Out Fluctuations Steady…
Ophthalmology · Eye · Color vision · Color Perception
Internet Archive · UCL Library Services, University College London (UCL) · Public domain (published before 1931). Free to use for anything.
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