Colour vision, a discussion of the leading phenomena and their physical laws (1922)
Peddie, William · London, Arnold · leaf 179
maller wavelength. By the flicker methodsit changes to a longer wavelength at very low intensities.That is to say, in flickering illumination the effect, known asthe Purkinje efect, can be reversed. Ives verified Porters law, and extended it to the cases ofdifferent spectrum colours, suitably… … Lo^I (Arbitrary Units).Fifi. 25.—Ciirve.s of Ciitical Flicker Frequency and Intensitj^. He connected the change of wavelength at the maximum bright-ness in the spectrum with the change in the value of k in theequation ?i = /;logI + Z; by showing that the direct Purkinje effect and the…
Color
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