An introduction to the study of colour vision (1915)
Parsons, John Herbert, Sir, 1868-1957 · Cambridge University Press · leaf 35
a short negative variation followed by a longer positive variation, w r tf r w^ 2. Electrical changes in the frog's eye caused by light. Plotted curves from the Fig, analyses of three capillary electrometer records. The illumination in the case of the upper record was white light, in that of the… … 0 01 02 03 04 03 ' 0« 07 08 09 10 H K Fig. 3. Curves constructed from typical electrometer records of eyeball responses to the light from the red, green, and violet regions of the interference spectrum of the arc light. (Gotch.)
Color vision
Internet Archive · Gerstein - University of Toronto · Public domain (published before 1931). Free to use for anything.
