Researches in colour vision and the trichromatic theory (1913)
Abney, William de Wiveleslie, Sir, 1843-1920 · London : Longmans, Green · 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
Color Perception · Color blindness · Color vision
Internet Archive · Wellcome Library · Public domain (published before 1931). Free to use for anything.
![An illustration from Cosmographia Francisci Mavrolyci Messanensis Sicvli : in tres dialogos distincta, in quibus de forma, situ numerʹoq[ue] tam coelorum q[uam] elementorum, alijsq[ue] rebus ad astronomica rudimenta spectantibus satis disseritur (1543)](https://img.insideoutlibrary.com/img/200/ia-cosmographiafran00maur-162-0.webp)
