Quote:
Originally Posted by pandy
The actual sci masksd dop stopentific studies that I read, which have now been removed from the internet, did not show that at all. Only the N95/99 masks helped. The coronavirus droplets are so small that they can't even be viewed under a laboratory gauge microscope. So small, they pass right through the masks. It may be true that they help minimize the spread when someone sneezes, but they won't stop you from breathing in the virus if it's in the air in front of you.
I personally don't mind wearing them in a crowded store but I can't understand why people wear them outside, especially if you're not protesting.
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Why were they removed? Sneaky deep state at work?
No, the coronavirus viral particles are carried through the air two ways. Large droplets and smaller
aerosol dispersion that N95 masks do stop. They are called "95" because.......
N95 masks. Actually a type of respirator, an N95 mask offers more protection than a surgical mask does because it can filter out both large and small particles when the wearer inhales. As the name indicates, the mask is designed to block 95% of very small particles.
However mesh size of the material used is not the whole story, and how just a small interference with free transmission and reception of the disease can significantioly change things. The R_O number or the contagion rate of an infectious disease indicates how rapidly community spread occurs. For the coronavirus that is around 3. Meaning 1 person on the average can give it to 3 others, and those 3 can infect 9, and those 9 infect
27. If the R_O number could be reduced to
2, at the end of that brief exponential chain,
instead of 27 getting sick only 4 would get sick.
(1x2x2=4)
Slowing the transmission of viral particles on
exhalation, is not rocket science. Although ballistics are involved.
Both large droplets and aerosols are emitted ballistically. Although even fine mesh sizes of simple woven cotton are way to large to stop the viral particles
completely, any solid object in that ballistic path acts as a an effective barrier.
Therefore from an engineering point of view, the percentage of cloth strands as a function of the total empty space between those strands
is key. If a simple cotton mask has a "tight weave" and is 70% solid, that impacts the viral load emitted by 70%
Generally, 70% and above is quite easy to produce. A 70% reduction of the R_O number changes community spread from exponential, to much, much less
and controls the pandemic!!
