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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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[–] PM_Your_Nudes_Please 13 points 9 months ago* (last edited 9 months ago) (1 children)

It’s such a big problem that there’s literally LED dimming tape on the market. It’s semi-transparent tape that you stick over the blue LEDs, to knock them down to a more reasonable brightness. It’s akin to putting sunglasses on your appliances.

[–] arin 7 points 9 months ago

I just layer on masking tape until it's dim enough, usually 2 layers