An introduction to the study of colour vision (1915)
Parsons, John Herbert, Sir, 1868-1957 · Cambridge University Press · leaf 74
\ ..''■ i ii 10 ?— s y l.ff ^r- i , L. t c U <^. "T 1 1 l_L^ — 6 8 10 M 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 22-8 38 398 506 581597613 Fig. 14. Normal trichromat's pkotopic and scotopic luminosity curves. (One amy] acetate or Hefner unit is equal to 0-9… … 05 CO CO -* -» CO -* HI Fig. 15. Scotopic luminosity curves. Schaternikoff's curve, (normal trichromat). — Nagcl's curve (deuteranope). X X X X X and o o o o o, other observations by Nagel. Abscissae, wave-lengths of the prismatic spectrum of gas light; ordinates. arbitrary scale. (Schaternikoff.)
Color vision
Internet Archive · Gerstein - University of Toronto · Public domain (published before 1931). Free to use for anything.
