this post was submitted on 09 Feb 2024
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The blue LED was supposed to be impossible—until a young engineer proposed a moonshot idea.

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[–] areyouevenreal@lemm.ee 2 points 8 months ago* (last edited 8 months ago)

I mean they aren't instant and have to be within a fairly short distance of the thing you want to sterilize in order to work because they are absorbed by the air. Something like a pool would be practically impossible as water also absorbs UV and a pool is too big to penetrate all the way through just from the sides or bottom. It only works for drinking water because you pass said water through a tube that must be fairly narrow.

Oh yeah and an X-ray could sterilize all the way through an object, not just the surface. Very useful for making things like microwave meals.