Re:Why the WHO took two years to say Covid is airborne
by winrid on Thursday April 07, 2022 @03:22AM
(#30941645)
It was especially confusing when my company at the time (in sfbay area) hired someone to tell us that masks won't help because viruses are small and also we'll be back in the office soon. :)
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Re:Why the WHO took two years to say Covid is airborne
by sampo on Thursday April 07, 2022 @04:48AM
(#30942154)
> to tell us that masks won't help because viruses are small
It's actually 0.3 micrometer particles that are most difficult to filter. Smaller than that, particles start to dance around and not move smoothly, because of Brownian motion, so they get stuck in the filtering fibers better.
https://www.researchgate.net/figure/Typical-filter-efficienc...
Re:Why the WHO took two years to say Covid is airborne
by tzs on Thursday April 07, 2022 @05:53AM
(#30942546)
Here's a short explanation of how some of the mechanisms mention in that diagram work [1].
[1] https://donaldsonaerospace-defense.com/library/files/documen...