this post was submitted on 09 Feb 2024
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922
Why It Was Almost Impossible to Make the Blue LED (youtu.be)
submitted 9 months ago by [email protected] to c/[email protected]
203 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] 14 points 9 months ago (1 children)

They're still rgb plus maybe yw using colour mixing, so depending on the quality, tuning, physics and our perceptionof light, not all colours are as nice or bright.

[–] [email protected] 2 points 9 months ago* (last edited 9 months ago) (1 children)

Yeah. I just think being RgB it would be good at purple 😂 One of those situations where the name was probably not created based on logic lol

[–] [email protected] 2 points 8 months ago (1 children)

It's called RGB because there's a red, green, and blue diode. Not sure how that's not a logical name.

[–] [email protected] 1 points 8 months ago (1 children)

Oh I was making a joke cause it sucks at purple. Which is red and blue combined generally. But that’s not really how the RGB color cycle works as far as I understand in some extremely cursory Wikipedia reading lol

[–] [email protected] 2 points 8 months ago* (last edited 8 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 8 months ago (1 children)

lol my favorite color would be a weird one. 😂

[–] [email protected] 2 points 8 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???"