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There have been studies suggesting that the sense of smell has something to do with quantum tunnelling but I'm afraid I don't know the exact details.

Do we possess internal mechanisms that simply "recognize" a photon of light when we see one, or is light somehow absorbed into the nervous system?

Does quantum tunnelling have anything to do with the perception of light by humans?

Vincent Thacker
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DanielFBest
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The neurophysiological mechanisms by which the retina converts photons into nerve impulses do not involve tunneling. The functioning of the retina in this regard is scientifically well-understood.

niels nielsen
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