▲ 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.
[–] ikapoz@sh.itjust.works 2 points 2 years ago You tell me. Your user name suggests some expertise. permalink fedilink source parent