UV light is both:
A. Damaging to eyesight.
B. Invisible.
You won’t know how much damage you’re doing to yourself until the damage has been done. This is how you give mass amounts of people eye trauma, and potentially blindness.
UV light is regularly used on HVAC systems and water purification systems.
There are systems used in hospitals that are automated which will roll into an empty room and then turn on to disinfect the room. They are usually used in hospitals but I’ve seen them used in places like China during their zero covid crackdown on public transportation.
Some transit systems in China even converted a paint booths to disinfect with UV so they could drive buses through. All of which is probably overkill as prolonged exposure to sunlight will do the same thing.
Exposure to UV light that is intense enough to kill viruses within seconds is very bad for humans. I pulled the cover off a system I was taking marketing pictures for while it was turned on. Within a thirty to sixty seconds I could feel like I was getting a sunburn on my arm that was closest to the light. I wouldn’t want to risk a direct UV system turning on while someone is sleeping and burning them. As a result most systems are indirect and rely on a combination of UV and HEPA filters to disinfect airborne viruses.
There are other ways to disinfect surfaces. Bleach or chlorine is cheap, simple and won’t harm humans. Chlorine gas can be used to kill really bad viruses like anthrax. Chlorine gas was used to disinfect the Federal buildings that had been contaminated in the 2001 anthrax attacks. Many detail shops, rental car agencies and public transit systems in the US use Chlorine gas on vehicles to disinfect or more commonly remove nasty odors from vehicles. The gas can seep into all cracks/crevices and get into the HVAC system ductwork in ways UV light can not. If you ever get into a car that faintly smells like a pool, chances are it has been gassed recently to kill an odor.
Because it is very dangerous and people will absolutely let their toddler play next to the lamp. This is why it’s basically only used in places like hospitals where access can be controlled.
Jeez, every response in here is about it burning your eyes. Thing is, people aren’t in every room all the time. Have it set to a sensor, same as the lights, and you can quickly sanitize large spaces that are unoccupied. Elevators, airplanes, etc can be sanitized the second they’re empty. My FIL is a retired GE engineer working on this technology.
Ever noticed how stuff left out in the sun gets bleached out and doesn’t last very long? Imagine leaving your carpet and all your furniture out in the sun. UV light is very hard on stuff.
I have lights go out on me all the time at the office, just sitting mildly still. What happens if someone falls asleep in the room? Or worse a kid? Severe sunburn and possible blindness
This is the dumbest shit. It kills all kinds of stuff, not just bad viruses. Homes are covered in bacteria which you’ve adapted to and are helpful. Kind of like gut bacteria, but outside your body. Killing all of them isn’t a good idea.
The article talks about this specifically. Far-UV (222nm) doesn’t penetrate skin or eyes and is harmless to humans. The usual UV-C used for disinfection is 254nm and is quite dangerous.
Will there be any benefit to say putting it in the air duct? Like on a forced air system the main exhaust from the unit (I’m guessing it’s exhaust but that sounds wrong). I know some air filters are supposed to filter out airborne viruses and whatnot but I have no way of testing that. But I know what ultraviolet will do. And I’d have to assume sitting in the metal ductwork wouldn’t really hurt anything.
The article blathers on for page after page after page talking about technology is back in the '60s and '70s, an experimental technology using UV wavelengths that supposedly don’t bother humans. And systems that only point up in a room like the UV light isn’t going to get reflected into your eyeballs. I get the feeling the author doesn’t have much of a background and was really just trying to stitch a bunch of research together without really understanding most of it.
You can safely blast the shit out of central air ducts, but it doesn’t do anything for infected breathing viruses into the air sitting next to you or the people that touched the bathroom door handle.
I suspect if we see any real non biased studies come out of any of this equipment the difference will be close to within the error bar.
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UV light is both: A. Damaging to eyesight. B. Invisible.
You won’t know how much damage you’re doing to yourself until the damage has been done. This is how you give mass amounts of people eye trauma, and potentially blindness.
removed by mod
UV light is regularly used on HVAC systems and water purification systems.
There are systems used in hospitals that are automated which will roll into an empty room and then turn on to disinfect the room. They are usually used in hospitals but I’ve seen them used in places like China during their zero covid crackdown on public transportation.
Some transit systems in China even converted a paint booths to disinfect with UV so they could drive buses through. All of which is probably overkill as prolonged exposure to sunlight will do the same thing.
Exposure to UV light that is intense enough to kill viruses within seconds is very bad for humans. I pulled the cover off a system I was taking marketing pictures for while it was turned on. Within a thirty to sixty seconds I could feel like I was getting a sunburn on my arm that was closest to the light. I wouldn’t want to risk a direct UV system turning on while someone is sleeping and burning them. As a result most systems are indirect and rely on a combination of UV and HEPA filters to disinfect airborne viruses.
There are other ways to disinfect surfaces. Bleach or chlorine is cheap, simple and won’t harm humans. Chlorine gas can be used to kill really bad viruses like anthrax. Chlorine gas was used to disinfect the Federal buildings that had been contaminated in the 2001 anthrax attacks. Many detail shops, rental car agencies and public transit systems in the US use Chlorine gas on vehicles to disinfect or more commonly remove nasty odors from vehicles. The gas can seep into all cracks/crevices and get into the HVAC system ductwork in ways UV light can not. If you ever get into a car that faintly smells like a pool, chances are it has been gassed recently to kill an odor.
Bleach kills AIDS, doesn’t mean you can inject it into your bloodstream and be okay.
Not necessarily agreeing with the article posted, but for all the people who clearly didn’t read the article:
https://www.nature.com/articles/s41598-022-08462-z
That’s just one paper I found searching for far-UV. Seems to be many more.
Again not saying it’s 100 % safe or anything, but it looks promising.
IIRC, they have UV sterilizers for central HVAC systems. So while it may not sterilize surfaces, it will kill all airborne pathogens.
Because it is very dangerous and people will absolutely let their toddler play next to the lamp. This is why it’s basically only used in places like hospitals where access can be controlled.
“Hydroflouric Acid can kill almost all viruses in a bowl. Why aren’t we eating it?”
The people who have are not around anymore.
Jeez, every response in here is about it burning your eyes. Thing is, people aren’t in every room all the time. Have it set to a sensor, same as the lights, and you can quickly sanitize large spaces that are unoccupied. Elevators, airplanes, etc can be sanitized the second they’re empty. My FIL is a retired GE engineer working on this technology.
Ever noticed how stuff left out in the sun gets bleached out and doesn’t last very long? Imagine leaving your carpet and all your furniture out in the sun. UV light is very hard on stuff.
Sounds dangerous
I have lights go out on me all the time at the office, just sitting mildly still. What happens if someone falls asleep in the room? Or worse a kid? Severe sunburn and possible blindness
I dont think the lights would be on the entire time the room was empty…
Or what if they’re black? I’ve read so many stories about sensors not detecting people simply because they have darker skin.
Given how often the lights go out at work while I’m taking a dump, this isn’t the best idea.
Fiber, bro…fiber
This is the dumbest shit. It kills all kinds of stuff, not just bad viruses. Homes are covered in bacteria which you’ve adapted to and are helpful. Kind of like gut bacteria, but outside your body. Killing all of them isn’t a good idea.
This thing kills all living things so why don’t we bathe ourselves in it?
I chugged cleaning chemicals. Now my insides are dirt free.
Is UV light the best thing since fermenting alcohol?
Do you want Ultraviolet resistant viruses?
Do you want tardigrades? Because this is how you get tardigrades.
¯\_(ツ)_/¯
If i had a tardigrade i could fly my mushroom spaceship.
IDK, I kinda like tardigrades.
Me too. I think we should do this.
I’d like to know which 12 users upvoted this so that I can block them all.
Because the spectrum required (UV-C) to do so is harmful to humans and the environment. Putting it EVERYWHERE would cause all kinds of problems.
This article is a longer version of “bleach kills it fast - what if that could be brought inside the body somehow?”
Just eat a tide pod and wash it down with some bleach!
The article talks about this specifically. Far-UV (222nm) doesn’t penetrate skin or eyes and is harmless to humans. The usual UV-C used for disinfection is 254nm and is quite dangerous.
Will there be any benefit to say putting it in the air duct? Like on a forced air system the main exhaust from the unit (I’m guessing it’s exhaust but that sounds wrong). I know some air filters are supposed to filter out airborne viruses and whatnot but I have no way of testing that. But I know what ultraviolet will do. And I’d have to assume sitting in the metal ductwork wouldn’t really hurt anything.
The article blathers on for page after page after page talking about technology is back in the '60s and '70s, an experimental technology using UV wavelengths that supposedly don’t bother humans. And systems that only point up in a room like the UV light isn’t going to get reflected into your eyeballs. I get the feeling the author doesn’t have much of a background and was really just trying to stitch a bunch of research together without really understanding most of it.
You can safely blast the shit out of central air ducts, but it doesn’t do anything for infected breathing viruses into the air sitting next to you or the people that touched the bathroom door handle.
I suspect if we see any real non biased studies come out of any of this equipment the difference will be close to within the error bar.
You’re assuming it’s not more “AI” nonsense though.
If all humans died there wouldn’t be anyone getting sick at all from anything!
I found the A.I.!!! Get’em!