kalkulat@lemmy.world to science@lemmy.world · 9 months agoWhy It Was Almost Impossible to Make the Blue LEDyoutu.beexternal-linkmessage-square29fedilinkarrow-up1235arrow-down130cross-posted to: videos@lemmy.worldtechnology@lemmy.worldengineeringporn@lemmit.onlinevideos@hexbear.net
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