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The blue LED was supposed to be impossible—until a young engineer proposed a moonshot idea.

  • Alto
    2•4 months ago

    IIRC, it has something to do with the fact that purple sort of doesn’t actually exist. As I understand, purple is basically your brain going “idk wtf it is but it’s not green”

      • Alto
        2•4 months ago

        Right there with you.

        More specifically, it’s because purple fires your red and blue cones, but not the green one. Normally, as green is between red and blue, anything that would trigger those two also would trigger green. So when it doesn’t, that’s when your brain goes “well I guess it’s not green???”