An introduction to the study of colour vision (1915)
Parsons, John Herbert, Sir, 1868-1957 · Cambridge University Press · leaf 106
lled "BidwelPs ghost"; Hamaker4 called it the "satellite", v. Kries "the following image." The ghost is seen in typical form when a light of moderate brightness is moved across a dark field of view at a moderate speed while the eye remains at rest, appearing as a second dimmer image following the… … Fig. 34. Fig. 35. Fig. 34. Appearance of a radial slit 2° in width and 7 cm. in length, with its mid-point 15 cm. from the centre of the disc, rotating at the rate of one revolution per 3" before a glass illuminated by four acetylene-gas jets. (McDougall.) Fig. 35. Appearance with slightly…
Color vision
Internet Archive · Gerstein - University of Toronto · Public domain (published before 1931). Free to use for anything.
