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
204 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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[–] lud@lemm.ee 9 points 9 months ago* (last edited 9 months ago) (1 children)

Or reading this on anything except an e-reader or if someone else printed it out on a printer without blue leds first.

[–] linuxPIPEpower@discuss.tchncs.de 1 points 9 months ago

Luckily my device screens can all be turned off, closed, put face down and otherwise turned off when not in use. Unlike indicator lights on the routers, APs, HDDs, PCs, mice, powerbars, extension cords, radios, headphones, USB cables, ACs, microwaves etc etc etc. Either totally unnecessary to have a light in the first place, or a subtle light could do the job just as well.