General > General Technical Chat
Working From Home - Impacts of Coronavirus
cdev:
UV light can only kill what it shines upon for an adequate length of time. In NYC, recent cutbacks have left subway cars uncleaned because they don't have staff to clean them and because they now have problems with homeless people who have increased substantially in number due to COVID-19 sleeping in them. So even under the best of conditions UV lights might not shine everywhere, but under these conditions it would seem to be futile to expect UV lights to do the job. They should invest that money in restoring the previous level of staffing and more frequent cleaning.
PlainName:
--- Quote ---UV lights might not shine everywhere
--- End quote ---
Just needs to shine where you've going to be touching - coronavirus doesn't have legs or wings :)
(Obviously, assuming the UVC exposure would be sufficient where it does shine.)
It's a bit unfair that it might take very intensive effort to even barely affect this thing with light, when just a blink of an accidental laser reflection does for us!
Zero999:
Use undoped mercury lamps which produce shorter wavelength UVC that make ozone, which can disinfect surfaces not exposed to the radiation.
--- Quote from: EEVblog on May 22, 2020, 10:58:29 am ---Medical experts now say coronavirus ‘does not spread easily’ via surfaces
https://7news.com.au/sunrise/on-the-show/medical-experts-now-say-coronavirus-does-not-spread-easily-via-surfaces-c-1052650
In other news, Isopropyl prices plummet.
--- End quote ---
I thought that was the case: that the main path of transmission is via the air. I wish people at work would focus more on social distancing, rather than cleaning. My workplace is generally low risk, but some departments are finding it more difficult than others. Some people are close friends outside of work and seem to be finding it difficult to keep apart. There seems to also be a difference between gender: women tend to forget and men are more inclined to consciously break the rules.
nctnico:
--- Quote from: Zero999 on May 22, 2020, 09:30:06 pm ---Use undoped mercury lamps which produce shorter wavelength UVC that make ozone, which can disinfect surfaces not exposed to the radiation.
--- Quote from: EEVblog on May 22, 2020, 10:58:29 am ---Medical experts now say coronavirus ‘does not spread easily’ via surfaces
https://7news.com.au/sunrise/on-the-show/medical-experts-now-say-coronavirus-does-not-spread-easily-via-surfaces-c-1052650
In other news, Isopropyl prices plummet.
--- End quote ---
I thought that was the case: that the main path of transmission is via the air. I wish people at work would focus more on social distancing, rather than cleaning.
--- End quote ---
The article clearly states we should still clean our surfaces. What is the main path of transmission is highly sensitive to context. If people keep a distance then surfaces automatically become a more significant path of transmission. The real question then is: is transmission through surfaces a big enough problem? Given that the experts still say that cleaning surfaces is necessary it seems the answer to that question is 'yes'.
PlainName:
It's probably well to remember that we are learning on the go, and making it up as we go along. Nothing wrong with that per se - as we find out more we can make better decisions. That can mean that earlier decisions, made with the benefit of what we knew then, may seem overly conservative or reckless based on what we've learned since.
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