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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[33🌻] Veritasium: Why It Was Almost Impossible to Make the Blue LED
#Tournesol is an open-source web tool by a non profit organization, evaluating the overall quality of the information in videos from community made comparisons, to fight against misinformation and dangerous content.