Abstract
THE view that the stimulation of the cones of the retina is indirect and takes place through the photo-chemical decomposition of the visual purple by light seems to be proved and a fact. How can the colourless transparent cones be directly stimulated by light? How does this direct stimulation agree with the laws of photo-chemistry? According to Grotthus's law, no effect can be produced by light unless it is absorbed.
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EDRIDGE-GREEN, F. The Theory of Vision. Nature 133, 651 (1934). https://doi.org/10.1038/133651d0
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DOI: https://doi.org/10.1038/133651d0
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