The following figure is from Cornsweet ( “Visual Perception”, Academic Press) portraying the absorption spectra from the “three classes of cones” of the retina. As C. states, these same curves have been reproduced in many places. Puzzling to me when I first looked at them was the question “where is the red response?” [... More»]
The following is text written some years ago in the 1994-95 time frame. It had occurred to me after completing the geometric vision paper that these same considerations should apply to other (all) biologically evolved photosensitive systems.
Nature would use the same classical wave/quantum particle nanostructure evolved in the eye/retina in biological photosynthesis only arrayed differently, not to form an image, but in a form to efficiently capture solar energy [... More»]
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