rainwulf t1_j7tf6a9 wrote on February 9, 2023 at 7:15 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 during a school trip to the science museum (i am 45 now) they had LEDs of all the colours at the time, and the blue one was like "woa" Permalink 2
rainwulf t1_j7tf6a9 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 during a school trip to the science museum (i am 45 now) they had LEDs of all the colours at the time, and the blue one was like "woa"