Why It Was Almost Impossible to Make the Blue LED

Whirling_Cloudburst@lemmy.world to Technology@lemmy.world – 926 points –
Why It Was Almost Impossible to Make the Blue LED
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The blue LED was supposed to be impossible—until a young engineer proposed a moonshot idea.

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Your white led is a blue led with a phosphorescent coating.

Well no, but...yeah sure why not haha

Edit: Read the comment I replied to completely backwards nvm, am dumb lol

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