Abstract
IN a paper appearing in the February issue of the Philosophical Magazine I have described, a theory of vision which ascribes visual stimuli to the activity of light quanta in liberating electrons from the visual purple. Various phenomena associated with scotopic and photopic vision are considered. Those coming under the designation of simultaneous contrast did not appear to me, at the time of writing, referable to purely retinal actions. Since then it has occurred to me that simultaneous contrast effects find explanation in a very simple way on the same data as serve to explain successive contrast, i.e. in the external location of the sensitiser with reference to the cones and in the motion of these organs attending light stimulus.
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JOLY, J. A Quantum Theory of Vision. Nature 106, 827 (1921). https://doi.org/10.1038/106827a0
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DOI: https://doi.org/10.1038/106827a0
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