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COVID-19 Emergency - Using UV Lamps to sanitize Face Masks overnight
Bud:
So heat then appears to be the safest method both in terms of coverage and not damaging the material.
Zero999:
--- Quote from: Mechatrommer on March 18, 2020, 04:36:39 am ---
--- Quote from: Buriedcode on March 17, 2020, 10:58:27 pm ---You're effectively saying "this is light, and light is good right?".
--- End quote ---
i dont say we can keep exposed to UV all day long. i'm trying to say, its not that bad as its said. i usually find people who get rid of the said item entirely because of some warning from authority. people dont get into electronics because afraid of lead poisoning. who got mad or lost temper control due to life long soldering? people dont buy items from china or quarantine their arrived parcel for few days (after few days already in shipping) because extra fear to virus. people dont get into electronics afraid of get killed by mains elecricity. and many more examples i cant point them all now. the point is, these warning, without adequetely educate people on what kind of risk, made people extra taboo. UV probably can make skin cancer, but for how long exposure? 1 day? 10 days? or 1 year continuos exposure? most people will think 1 hour exposure (or even less like 1 minute exposure) and you'll get cancer. this people dont know we walked everyday under the sun without getting anything bad or short lived, we may get some benefit as well, sun produces all kind of spectrums. but i dont say we should lay under the sun all day long for no reason, just do what we have to do for our benefit, no need to raise extra taboo or fear.
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You've completely missed the point. UV is a broad spectrum of electromagnetic radiation from 400nm, all the way down to 10nm. The 253.7nm radiation produced by germicidal lamps is not something any human is exposed to during their everyday life, because it is completely absorbed by the earth's atmosphere. Human skin has no defence against it, (darker skin is just as vulnerable as lighter skin) which is why one needs to be very careful not to expose themselves to radiation from a germicidal lamp.
https://en.wikipedia.org/wiki/Ultraviolet
Mechatrommer:
weld arc covers whats absorbed by the ozone very well (200 to 400 nm)... https://www.ccohs.ca/oshanswers/safety_haz/welding/eyes.html i'm one of many living souls to tell the tale... and if its real hazard devices (germicidal lamp), you wont be able to get it off the shelf anyway... what i saw on sales are for kitchen, bathroom etc where the vulnerable SWMBO usually at...
Zero999:
--- Quote from: Mechatrommer on March 18, 2020, 09:22:37 am ---weld arc covers whats absorbed by the ozone very well (200 to 400 nm)... https://www.ccohs.ca/oshanswers/safety_haz/welding/eyes.html i'm one of many living souls to tell the tale...
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A welding mask is essential and it wouldn't surprise me if a germicidal lamp emits more UVC, than a welding arc. It's certainly on for longer, so would result in a higher exposure.
--- Quote --- and if its real hazard devices (germicidal lamp), you wont be able to get it off the shelf anyway... what i saw on sales are for kitchen, bathroom etc where the vulnerable SWMBO usually at...
--- End quote ---
What are you talking about? Hazardous items such as knives and bottled gas are widely available, as are germicidal lamps.
Mechatrommer:
knives and bottle gas can be controlled and contained, hazardous lamp cant, much like nuclear radiation. and its not like we are going to put our skin 1cm from radiation at any moment. the fact that it is sold means its not as hazardous as its said in the warning. its similar to when authority gives warning "dont go outside you'll get caught by covid" so what do we do? ask our nurse/doctor wife to go home? some people will take this literally.
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