Regan-Spor t1_j7nrcp9 wrote on February 8, 2023 at 3:01 AM Reply to comment by undefined7196 in TIL the first Blue LED wasn't commercially available until 1989 and bright blue LEDs weren't available until 1993. by j-merc23 Now I have someone to blame for the white light headlights I see on cars. Permalink Parent 15
Regan-Spor t1_j7nrcp9 wrote
Reply to comment by undefined7196 in TIL the first Blue LED wasn't commercially available until 1989 and bright blue LEDs weren't available until 1993. by j-merc23
Now I have someone to blame for the white light headlights I see on cars.