An introduction to the study of colour vision (1915)
Parsons, John Herbert, Sir, 1868-1957 · Cambridge University Press · leaf 146
ipient of the greatest amount of the radiated stimuli, and consequently that would be the last to disappear. With a slit aperture the slit is visible till extinction is very nearly executed, but it finally merges into a fuzzy spot at the moment before it finally fails to make any impression of… … Diameter of apertures vn powers of z. Fig. 40. Extinction of colour and light curves with different areas of stimulation. SSN 44 = 548-1 ma; SSN 50-6 = D line: I and II, different observers and different in- tensities. (Abney.) Abney has also compared the luminosity of the spectral light from…
Color vision
Internet Archive · Gerstein - University of Toronto · Public domain (published before 1931). Free to use for anything.
![An illustration from Studies in the photometry of lights of different colours [electronic resource] / spectral luminosity curves obtained by the equality of brightness photometer and the flicker photometer under similar conditions (1912)](https://img.insideoutlibrary.com/img/200/ia-b21287569-60-0.webp)
