Far-UVC Virus Disinfection

The cluster focuses on discussions about using Far-UVC light (222nm) to kill viruses and bacteria safely without penetrating human skin or eyes, including debates on its efficacy, safety compared to regular UV-C, and potential widespread adoption.

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#3521
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Keywords

mercuryarc.html nichia.co UVB PMC10087841 HN wikipedia.org UVC YouTube UV nlm.nih uv light wavelength sunlight nm leds virus cells far skin

Sample Comments

samwestdev β€’ Jan 30, 2023 β€’ View on HN

Wouldn't UV Light suffice?

datavirtue β€’ Nov 13, 2022 β€’ View on HN

Probably blasting your balls with UV light?

jennyyang β€’ Mar 29, 2020 β€’ View on HN

I specifically said UV-C light. Do a bit of research and you'll find the answer.

cma β€’ Dec 28, 2020 β€’ View on HN

They can't use UV for that?

briandw β€’ Jan 14, 2026 β€’ View on HN

This is Far-UVC (typically 222 nm). Regular UVC can cause eye damage.

ceejayoz β€’ Mar 28, 2022 β€’ View on HN

The article describes "far-UVC" light, which they say is new.> Far-UVC light has a shorter wavelength than conventional germicidal UVC, so it can’t penetrate into living human skin cells or eye cells. But it is equally efficient at killing bacteria and viruses, which are much smaller than human cells.The UVC lights on Amazon are presumably plain old eye-destroying UVC.(If you want to use UVC, get it installed in your air ducts, where eyes don't go.)

swebs β€’ Oct 4, 2020 β€’ View on HN

Hopefully the UV light is blocked from escaping the device.

chillwaves β€’ Oct 31, 2016 β€’ View on HN

Why no UV? Seems like it couldn't hurt.

BenjiWiebe β€’ Apr 29, 2024 β€’ View on HN

That would be UV-A, I believe. Not UV-C.

jpalawaga β€’ May 28, 2024 β€’ View on HN

(for ultraviolet light reasons)