[deleted] t1_jcn55xf wrote on March 18, 2023 at 1:08 AM

Reply to comment by echawkes in If UV radiation is used to disinfect and sterilise things then why isn't everything the sun touches (your skin, the sidewalk etc) sterile? by Critwhoris

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[deleted] t1_jcn512p wrote on March 18, 2023 at 1:07 AM

Reply to comment by [deleted] in If UV radiation is used to disinfect and sterilise things then why isn't everything the sun touches (your skin, the sidewalk etc) sterile? by Critwhoris

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purpleoctopuppy t1_jcn4ra3 wrote on March 18, 2023 at 1:05 AM

Reply to comment by fkenthrowaway in If UV radiation is used to disinfect and sterilise things then why isn't everything the sun touches (your skin, the sidewalk etc) sterile? by Critwhoris

Yes definitely! That's why I mentioned different wavelength: sunlight is not an adequate replacement for a sterilising bulb.

I was just expecting it to be thousands of times stronger integrated across the UV spectrum that I was surprised, as I wasn't expecting to need to take that into account at the start!

[deleted] t1_jcn4hp0 wrote on March 18, 2023 at 1:03 AM

Reply to If UV radiation is used to disinfect and sterilise things then why isn't everything the sun touches (your skin, the sidewalk etc) sterile? by Critwhoris

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[deleted] t1_jcn3zdw wrote on March 18, 2023 at 12:59 AM

Reply to comment by mook1178 in If UV radiation is used to disinfect and sterilise things then why isn't everything the sun touches (your skin, the sidewalk etc) sterile? by Critwhoris

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[deleted] t1_jcn3dh3 wrote on March 18, 2023 at 12:55 AM

Reply to comment by [deleted] in If UV radiation is used to disinfect and sterilise things then why isn't everything the sun touches (your skin, the sidewalk etc) sterile? by Critwhoris

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Atharen_McDohl t1_jcn2f04 wrote on March 18, 2023 at 12:47 AM

Reply to comment by CarneDelGato in If UV radiation is used to disinfect and sterilise things then why isn't everything the sun touches (your skin, the sidewalk etc) sterile? by Critwhoris

Right but this is specifically about the radiation we create specifically for sterilization. We're not talking about all human made radiation, just the kind we use for disinfecting.

[deleted] t1_jcn2do5 wrote on March 18, 2023 at 12:47 AM

Reply to Are there any known endogenous retroviruses that can cause active infections, and is this possible in principle? by amlyo

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[deleted] t1_jcn24y1 wrote on March 18, 2023 at 12:45 AM

Reply to comment by Alittlebitmorbid in Can taking the pill delay menopause? by SouthFar412

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[deleted] t1_jcn24qm wrote on March 18, 2023 at 12:45 AM

Reply to comment by [deleted] in If UV radiation is used to disinfect and sterilise things then why isn't everything the sun touches (your skin, the sidewalk etc) sterile? by Critwhoris

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[deleted] t1_jcn1ilp wrote on March 18, 2023 at 12:41 AM

Reply to Are there any known endogenous retroviruses that can cause active infections, and is this possible in principle? by amlyo

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[deleted] t1_jcn1de8 wrote on March 18, 2023 at 12:40 AM

Reply to comment by Uncynical_Diogenes in Are there any known endogenous retroviruses that can cause active infections, and is this possible in principle? by amlyo

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CarneDelGato t1_jcn1586 wrote on March 18, 2023 at 12:38 AM

Reply to comment by stfsu in If UV radiation is used to disinfect and sterilise things then why isn't everything the sun touches (your skin, the sidewalk etc) sterile? by Critwhoris

Yeah, I’m a pasty boy and reapplied like every hour or so with SPF 50, still got burned. Ain’t nothing for it :(

[deleted] t1_jcn0xbn wrote on March 18, 2023 at 12:36 AM

Reply to comment by fkenthrowaway in If UV radiation is used to disinfect and sterilise things then why isn't everything the sun touches (your skin, the sidewalk etc) sterile? by Critwhoris

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[deleted] t1_jcmyx41 wrote on March 18, 2023 at 12:21 AM

Reply to comment by joyamazingpinoy in If UV radiation is used to disinfect and sterilise things then why isn't everything the sun touches (your skin, the sidewalk etc) sterile? by Critwhoris

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[deleted] t1_jcmyukz wrote on March 18, 2023 at 12:21 AM

Reply to If UV radiation is used to disinfect and sterilise things then why isn't everything the sun touches (your skin, the sidewalk etc) sterile? by Critwhoris

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[deleted] t1_jcmyrv1 wrote on March 18, 2023 at 12:20 AM

Reply to Are there any known endogenous retroviruses that can cause active infections, and is this possible in principle? by amlyo

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docmeow t1_jcmxth0 wrote on March 18, 2023 at 12:13 AM

Reply to Are there any known endogenous retroviruses that can cause active infections, and is this possible in principle? by amlyo

While not really an endogenous retrovirus capable of causing disease by itself, this occurs to an extent in cats. In cats, Feline Leukemia Virus (FeLV) is present as both an exogenous retrovirus, and integrated into the genome several times as an endogenous retroviruses. Several strains of FeLV Subtype B occurs when the "env" region of endogenous FeLV recombines with exogenous FeLV. This "new" virus is not generally considered transmissible, but causes cancers to develop in the cat.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8387034/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7152252/

[deleted] t1_jcmxbow wrote on March 18, 2023 at 12:10 AM

Reply to If UV radiation is used to disinfect and sterilise things then why isn't everything the sun touches (your skin, the sidewalk etc) sterile? by Critwhoris

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KoalaGrunt0311 t1_jcmwzus wrote on March 18, 2023 at 12:07 AM

Reply to comment by JonseyCSGO in If UV radiation is used to disinfect and sterilise things then why isn't everything the sun touches (your skin, the sidewalk etc) sterile? by Critwhoris

I forget the full measurements for UV-C. I want to say UV-C is between 280 nm and 200 nm. After investigating, it looks like Far C is 222 nm with filters set for safety purposes at 233 nm.

Columbia University is the originators of the Far UV C concept and studies. Here's some starting research points.

https://www.cuimc.columbia.edu/news/new-type-ultraviolet-light-makes-indoor-air-safe-outdoors

And they have their technology licensed to USHIO.

https://www.ushio.com/product/care222-filtered-far-uv-c-excimer-lamp-module/