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 9 months ago by Whirling_Cloudburst@lemmy.world to c/technology@lemmy.world
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The blue LED was supposed to be impossible—until a young engineer proposed a moonshot idea.

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[–] KyuubiNoKitsune@lemmy.blahaj.zone 22 points 9 months ago (5 children)

The first blue LED I ever saw was on the dashboard of my mom's VW Golf. I always wanted one like that, but now they're everywhere!

[–] nicerdicer@feddit.de 5 points 9 months ago (1 children)

Before there were blue LED, the indicator light for full beam was a blue tinted incandescent bulb. My parents had a Volkswagen Passat from the 1980s (?) where the usually blue indicator light for full beam was a green LED, since blue ones were not invented back then.

[–] KyuubiNoKitsune@lemmy.blahaj.zone 1 points 9 months ago

Very interesting. I think my mom bought her car in 1996

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