OccamsMallet t1_j7oanvo wrote on February 8, 2023 at 5:48 AM Reply to TIL the first Blue LED wasn't commercially available until 1989 and bright blue LEDs weren't available until 1993. by j-merc23 I remember buying blue LED Christmas lights back in the day ... they were so expensive but looked so cool. Now they are stuck in throw-away plastic signs. Permalink 1
OccamsMallet t1_j7oanvo wrote
Reply to TIL the first Blue LED wasn't commercially available until 1989 and bright blue LEDs weren't available until 1993. by j-merc23
I remember buying blue LED Christmas lights back in the day ... they were so expensive but looked so cool. Now they are stuck in throw-away plastic signs.