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Solar UV helps a little, but UVC (180-280 nm) is necessary to thoroughly kill many bacteria and viruses (including COVID) and UVC doesn't reach the Earth becau

Solar UV helps a little, but UVC (180-280 nm) is necessary to thoroughly kill many bacteria and viruses (including COVID) and UVC doesn't reach the Earth because the atmosphere absorbs it.

altcognito 1y ago
UVB kills covid, and sunlight is a pretty good disinfectant in general. https://academic.oup.com/jid/article/222/2/214/5841129?login=false https://academic.oup.com/jid/article/222/2/214/5841129?login... https://www.cedars-sinai.org/newsroom/study-reveals-ultraviolet-light-exposure-has-antiviral-effects-on-covid-19-variants/ https://www.cedars-sinai.org/newsroom/study-reveals-ultravio... I think the idea that sunlight doesn't breakdown the virus comes from people trying to "cure" cases of covid-19 with sunshine, which yeah, that's not going ot work.
- dreamcompiler 1y ago
  UVB does work but it takes longer than UVC. So long that if you try to use it to disinfect skin, it's likely to give you sunburn before it kills much of the virus. https://www.nationalacademies.org/based-on-science/covid-19-does-ultraviolet-light-kill-the-coronavirus https://www.nationalacademies.org/based-on-science/covid-19-... Contrast Far-UVC (200-235 nm), which kills the virus quickly and yet does not seem to cause skin or corneal damage, despite being more energetic than UVB. https://en.m.wikipedia.org/wiki/Far-UVC https://en.m.wikipedia.org/wiki/Far-UVC
  - deleted 1y ago
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  - xattt 1y ago
    People often dry their clothes for several hours during the day to take advantage of the sun.
deeThrow94 1y ago
Not to mention UV will break down the fabric itself.