Trial of Glycol, Far UVC, and CFM Measurement at BIDA
https://www.jefftk.com/p/glycol-far-uvc-and-cfm-measurement-...
The death rays that guard life
11–20 of 56 posts
Re: The death rays that guard life
#12[dead]
Re: The death rays that guard life
#13Oh yeah, why don't we put an air purifier, UV lamp box combo in each office/classroom? I've never thought about that, but it seems like such an obvious thing to do now
We do. They are called windows. A simple open window lets in fresh air and piles of free UV light.
Re: The death rays that guard life
#14Oh yeah, why don't we put an air purifier, UV lamp box combo in each office/classroom? I've never thought about that, but it seems like such an obvious thing to do now
We do. They are called windows. A simple open window lets in fresh air and piles of free UV light.
UVC is blocked by the ozone layer.
Plus the air is not always “fresh” depending on where you live and what time of year. Ozone, smog, smoke, etc.
Plus for those of us with allergies, an open window during for example ragweed season can be a nightmare.
Re: The death rays that guard life
#15So in our entirely sanitized and sterilized environments we would be free from airborne and waterborne disease, but the moment we step outside of it our underdeveloped immune systems would be incapable of fighting off the common cold? That seems like a bad idea.
Re: The death rays that guard life
#16Oh yeah, why don't we put an air purifier, UV lamp box combo in each office/classroom? I've never thought about that, but it seems like such an obvious thing to do now
I would be surprised if there is no dire second order consequences to raising kids 8h per days in a sterile environment (or more if you also adopt this setup at home).
The immune system needs to be used in order to work properly. Unless we want a life where we cannot step outside of the range of our UV lamps.
Re: The death rays that guard life
#17Earlier quoted context omitted.
We do. They are called windows. A simple open window lets in fresh air and piles of free UV light.
UVC is blocked by the ozone layer. Plus the air is not always “fresh” depending on where you live and what time of year. Ozone, smog, smoke, etc. Plus for those of us with allergies, an open window during for example ragweed season can be a nightmare.
And lots of other UV gets though. Sunlight remains a great disinfectant, maybe not as much as a narrow-spectrum bulb, but it still carries plenty of microbe-killing power. From the actual article:
>> In a paper submitted to the Royal Society of London, they described how over the course of six months they had used sunlight to prevent bacteria from growing in a tube.
Humans have known about this for millennia, with ancient doctors regularly telling people to expose wounds to sunlight. Even animals have been seen instinctively "sunning" a wound. (I remember a BBC doc about Antarctica where a penguin was shown exposing a bite wound to the low-angle sunlight.) Only in recent years has a fear of cancer caused us to retreat from any and all sunlight, a fear revisited as we learn the downsides.
Re: The death rays that guard life
#18Oh yeah, why don't we put an air purifier, UV lamp box combo in each office/classroom? I've never thought about that, but it seems like such an obvious thing to do now
> Studies have shown that various immunological and autoimmune diseases are much less common in the developing world than the industrialized world and that immigrants to the industrialized world from the developing world increasingly develop immunological disorders in relation to the length of time since arrival in the industrialized world.[23] This is true for asthma and other chronic inflammatory disorders.[18] The…
That certainly seems reasonable -- that the immune system needs practice or otherwise it will start using its ammo on other "hey that's me!" stuff and cause auto-immune diseases.
But I also have to wonder if the kids with auto-immune diseases or "common" allergies elsewhere might just die the first time they encounter some event that'd otherwise be caught and treated in "the first world" ?
Re: The death rays that guard life
#19The most interesting application I’ve seen mentioned was a proposal to shine far-UVC light directly at a patient during surgery. The idea is that it would kill most pathogens that might end up inside the patient while still being mostly harmless to the patient even when being shined inside them.
Re: The death rays that guard life
#20Earlier quoted context omitted.
It's far more dangerous to the eyes than to the skin.
afaik they use it to desinfect the room after or before usage, not during
I'm intrigued. Didn't know places were trying this idea somewhat "at scale." Do you know if they have any findings from where this was deployed?