Colour vision, a discussion of the leading phenomena and their physical laws (1922)
Peddie, William · London, Arnold · leaf 141
urity or saturation, we may havevarious types of curve in accordance with the nature of thetest employed in any of the above methods. First, the differ-ence of brightness alone might be considered. The curvewould then be one exhibiting the variation in sensitiveness toluminosity. Second, change of… … 500 50 600 50 Fig. 18.—Cui-ve of Differential 8en.siti\aty. light to the less white of the two near lights, an estimate ofthe difference in purity might be attempted. Again, the testmight be general without alteration of any condition. Or,to take a final exam])le, the difference of wavelength might…
Color
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
