this post was submitted on 09 Feb 2024
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Why It Was Almost Impossible to Make the Blue LED (youtu.be)
submitted 9 months ago by Whirling_Cloudburst to c/technology
201 comments fedilink hide all child comments
 

The blue LED was supposed to be impossible—until a young engineer proposed a moonshot idea.

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[–] JATtho 63 points 9 months ago (22 children)

This was an yet another glorious episode from veritasium.

I hope we get well past UVC LEDs. (i.e., shorter wavelengths) UV LEDs are already available. Unfortunately, this progress will stop before X-ray light. With +1 KeV energy, you pretty much must blast off the electrons from the atoms to emit X-rays, which an x-ray tube already does. Or by peeling off a piece of scotch tape.

[–] FlyingSquid 52 points 9 months ago (13 children)

Maybe making X-ray emitters cheap enough to put in a flashlight isn't the best idea anyway.

[–] FiFoFree 6 points 9 months ago (1 children)

/c/flashlight sends its regards

[–] [email protected] 3 points 9 months ago

D4V2 x-ray edition when?

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