science @lemmy.world kalkulat @lemmy.world 1y ago Why It Was Almost Impossible to Make the Blue LED 2 crossposts Videos @lemmy.world freddo @feddit.nu 1y ago Why It Was Almost Impossible to Make the Blue LED Technology @lemmy.world Whirling_Cloudburst @lemmy.world 1y ago Why It Was Almost Impossible to Make the Blue LED
