Sunsettommy
Diamond Member
- Mar 19, 2018
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And as I mentioned in introducing my second image, it's focus-stacked from multiple images at different depths, to increase depth of field.
Focus stacked how? How many slices? Where in the material were you looking? THere's a lot of folds and stuff.. The material is not completely flat..
Road dust is a lot bigger than a virus. Big enough that some of it will stick in such a mask. Even so, I'd bet that at least as much dust got through that mask as was stopped by it.
It in the definition of the N95 standard.. Can't be quibbled over.. It STOPS 95% of "non oil particles" that are 0.3 microns or larger.. NOT EXACTLY DESIGNED for "fluid borne viruses"... But that's the guarantee when you buy one...
As I said above you cannot TEST 100% of them.. And there's reports of a lot cheap junk being imported... But chances of a citizen scoring REAL ONES if they're not in health services right now is close to ZERO...
The China Virus is SMALLER than .30 microns, the mask stops very little if any viruses from going through. From Wikipedia:
"Structure
Coronaviruses are large, roughly spherical, particles with bulbous surface projections.[41] The average diameter of the virus particles is around 125 nm (.125 μm). The diameter of the envelope is 85 nm and the spikes are 20 nm long. The envelope of the virus in electron micrographs appears as a distinct pair of electron-dense shells (shells that are relatively opaque to the electron beam used to scan the virus particle)."
In post 366 are a number of research papers discussing face masks.
Why Masks Don’t Work Against COVID-19