sudsmaster
Well-known member
UV vs. viruses
Actually UV light can be quite effective against viruses.
However, the most effective UV light is UV-C, which is the type that germicidal lamps emit. Unfortunately while the sun emits UV-C, very little of it gets to the earth's surface. UV-B, which does get down, is much less germicidal/antiviral but is far more abundant than UV-C so it may have some protective effect. Perhaps more important is that outdoors a cough or sneeze quickly dissipates, whereas inside a building, the aerosols and droplets may linger far longer in the still air.
It's long been observed that people who go outdoors in general are healthier than those who stay inside all the time. This may be from a combination of factors, but I would think that UV light exposure, as well as fresher, less contaminated air, play a large part. Balancing that out is that those who are obliged to stay inside often may have health problems already.
The link below is to a NCBI publication that discusses face masks, UV light, and other factors affecting viral (flu) transmission.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1854994/
Actually UV light can be quite effective against viruses.
However, the most effective UV light is UV-C, which is the type that germicidal lamps emit. Unfortunately while the sun emits UV-C, very little of it gets to the earth's surface. UV-B, which does get down, is much less germicidal/antiviral but is far more abundant than UV-C so it may have some protective effect. Perhaps more important is that outdoors a cough or sneeze quickly dissipates, whereas inside a building, the aerosols and droplets may linger far longer in the still air.
It's long been observed that people who go outdoors in general are healthier than those who stay inside all the time. This may be from a combination of factors, but I would think that UV light exposure, as well as fresher, less contaminated air, play a large part. Balancing that out is that those who are obliged to stay inside often may have health problems already.
The link below is to a NCBI publication that discusses face masks, UV light, and other factors affecting viral (flu) transmission.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1854994/