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Erratum: I need to correct one thing in the comment (not the article itself.) As I noted in its intro, it was extemporaneous and not fact checked.
There is an assertion that I made which I can't back up. It concerns the statement: "... while the receptors that deal with levels of brightness are called the rods."
I don't think that this is entirely true or best describes the function of the rods if it is true. It implies that the cones are not able to capture brightness detail without the rods, which I don't think is correct.
On the other hand, the rods are more sensitive to light and dark, whereas the cones do not function well as darkness increases until the point that they don't function at all. Further, the rods don't get triggered by red light at all, which will give the sunset phenomena of a red rose going dark while the green leaves around it glow more green shades.
Quickly searching through some source material doesn't provide the exact right answer to better describe the function of the rods. My new plan is to refine this long comment above into a "Part 0" of the series. When I get that detail correct for that section, I'll make it known. Never underestimate their intelligence, always underestimate their knowledge.
Frank Delaney ~ Ireland
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