Technology

59377 readers

4289 users here now

This is a most excellent place for technology news and articles.

Our Rules

Follow the lemmy.world rules.
Only tech related content.
Be excellent to each another!
Mod approved content bots can post up to 10 articles per day.
Threads asking for personal tech support may be deleted.
Politics threads may be removed.
No memes allowed as posts, OK to post as comments.
Only approved bots from the list below, to ask if your bot can be added please contact us.
Check for duplicates before posting, duplicates may be removed

Approved Bots

founded 1 year ago

MODERATORS

877

Why It Was Almost Impossible to Make the Blue LED (youtu.be)

submitted 9 months ago by Whirling_Cloudburst@lemmy.world to c/technology@lemmy.world

204 comments fedilink hide all child comments

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

you are viewing a single comment's thread
view the rest of the comments

[–] aStonedSanta@lemm.ee 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

[–] Alto@kbin.social 2 points 9 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.

[–] aStonedSanta@lemm.ee 1 points 9 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

[–] Alto@kbin.social 2 points 9 months ago* (last edited 9 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"

[–] aStonedSanta@lemm.ee 1 points 9 months ago (1 children)

lol my favorite color would be a weird one. 😂

[–] Alto@kbin.social 2 points 9 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???"