Why aren't we using 222nm light against Covid? This seems like a game changer for large inside venues.
ncbi.nlm.nih.gov/pmc/articles/P
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That's pretty slick! And viruses don't have nice thick cells to protect them, so they should be pretty vulnerable, too. (Though I'd want to see a lot more work on the safety first.)
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Here is the best primer on Far UVC I have seen. It answers your questions.
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