▲ 938 ▼ Why It Was Almost Impossible to Make the Blue LED (youtu.be) submitted 2 years ago by Whirling_Cloudburst@lemmy.world to c/technology@lemmy.world 200 comments fedilink hide all child comments The blue LED was supposed to be impossible—until a young engineer proposed a moonshot idea.
[–] FiFoFree@lemmy.world 6 points 2 years ago (1 child) /c/flashlight sends its regards permalink fedilink source parent hideshow 2 child comments replies: [+] lud@lemm.ee 3 points 2 years ago* (last edited 1 year ago) [deleted] permalink fedilink source parent
[+] lud@lemm.ee 3 points 2 years ago* (last edited 1 year ago) [deleted] permalink fedilink source parent