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science@lemmy.world · 9 个月前

Why It Was Almost Impossible to Make the Blue LED

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Why It Was Almost Impossible to Make the Blue LED

kalkulat@lemmy.world to

science@lemmy.world · 9 个月前

The blue LED was supposed to be impossible—until a young engineer proposed a moonshot idea. Head to https://brilliant.org/veritasium to start your free 30-da...

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9 个月前
Why ask questions that are answered by the video you’re commenting on?

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