Colour vision : being the Tyndall lectures delivered in 1894 at the Royal Institute (1895)
Abney William de Wiveleslie Sir, 1843-1920, Royal College of Physicians of Edinburgh · London : Sampson Low, Marston · leaf 25
Pnrkinje s Figw'cs. 7 hefore so doing. It has already been stated that the light has to pass throngh the thickness of the yellow spot l)efore a visual sensation is felt in the centre of the field, and the experiments just given offer a fair proof of the truth of the assertion, but there is still… … marked at F. Knowing the distance of the centre 0 of the hollow sphere from F C and its diameter, and measurino; the distance between F and C and their respective distances from the axis of the sphere, the distances S B and S E can l)e calculated. This method is applied in the formation of what are…
Color Perception
Internet Archive · Royal College of Physicians in Edinburgh · Public domain (published before 1931). Free to use for anything.
