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 35
it, holding it close by the side of the head, there will appear in the field of vision of the eye nearest the lamp an image of the blood-vessels of the retina. The light enters the eye through the cornea, and an image of the lamp or candle-flame is formed on the nasal side of the retina. The light… … light when concentrated at A casts a shadow on the retina at B, which shadow is seen projected along BC. If the concentrated light is moved to D, the same vessel casts a shadow
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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