When the tiniest water droplet cannot be stopped by an N95 mask.
After all, the entire length of a single COVID virus is only 70-90nm long.
What was the manufacturer-rated N95 stopping power of particle size again? 95% at 300nm! And it quickly goes south after that.
Also, because of ANY sufficiently virial load, the water droplets are even smaller.
Don't try and pull that nonsense of a human breathing action having cause a Brownian Motion to being able to catch even smaller particles because all cited papers mention unnatural atmospheric pressure (1800 mbar) to achieve this kind of filtering.
It was actually a really cool story when this happened during the pandemic. The original inventor of the current n95 mask production technique came out of retirement to help out.
First link is an article that merely summarize following link. Not exactly the peer-reviewable source.
Second link also has zero “actionable” citation and scarily so, has a paltry 84 citations-by. Making this actionless, “citation-free” paper an even terrible source.
After all, the entire length of a single COVID virus is only 70-90nm long.
What was the manufacturer-rated N95 stopping power of particle size again? 95% at 300nm! And it quickly goes south after that.
Also, because of ANY sufficiently virial load, the water droplets are even smaller.
Don't try and pull that nonsense of a human breathing action having cause a Brownian Motion to being able to catch even smaller particles because all cited papers mention unnatural atmospheric pressure (1800 mbar) to achieve this kind of filtering.
So, superiority complex, indeed.
Might as well wear a simple cloth mask. :-/
- https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7579175/
- https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8436814/