this post was submitted on 09 Feb 2024
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Why It Was Almost Impossible to Make the Blue LED (youtu.be)
submitted 7 months ago by [email protected] to c/[email protected]
208 comments fedilink hide all child comments
 

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

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[–] [email protected] 2 points 6 months ago* (last edited 6 months ago) (1 children)

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"

[–] [email protected] 1 points 6 months ago (1 children)

lol my favorite color would be a weird one. 😂

[–] [email protected] 2 points 6 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???"