The blue LED was supposed to be impossible—until a young engineer proposed a moonshot idea. Head to https://brilliant.org/veritasium to start your free 30-da...

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

  • lud@lemm.eeEnglish
    101·
    9 months ago

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