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...
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...