I imagine there was a gradual process of discovery and little by little we learned more about the way we process light and send it to our brains. But I’m still having a really hard time understanding how we even started to question how many colors we see in the first place. Would really appreciate an explanation.
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Sir Isaac Newton spent a good amount of time putting needles in his eyes and found that when he would push on different areas of his retina he would see different colours.
Obviously better techniques have since been discovered but I believe this is the first “discovery” of colour rods.
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