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The blue LED was supposed to be impossible—until a young engineer proposed a moonshot idea.
The blue LED was supposed to be impossible—until a young engineer proposed a moonshot idea.
this doesn’t sound true.
iirc full spectrum means “every wavelength” (like sunlight) and not just “3 wavelengths that add up to white”.
That’s true (here’s an interesting video on the subject of colored light: https://www.youtube.com/watch?v=uYbdx4I7STg), but as mentioned at https://youtu.be/AF8d72mA41M?si=i8wjHjaKRaQbf23b&t=1516, once you have a blue LED, you can use a phosphor to convert the light to a range of longer wavelengths.
Here is an alternative Piped link(s):
https://www.piped.video/watch?v=uYbdx4I7STg
https://piped.video/AF8d72mA41M?si=i8wjHjaKRaQbf23b&t=1516
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