Wearing a mask might limit oxygen intake in ways that could be harmful.
The SARS CoV-2 (the coronavirus that causes COVID-19) virus infection is
[ 0.06 - 0.12 μm, micrometer ].
0.06/1,000 – 0.12/1,000 millimeter
Atmospheric particles generally
[ 2.5 - 10 μm, micron ]
2.5/1,000 – 10/1,000 millimeters in aerodynamic diameter,
The pore size of masks ranged from
[ 200 to 500 μm ]
200/1,000 – 500/1,000 millimeter,
Coronavirus ;; Pore size of Mask
0.06-0.12 ;; 200 to 500 (μm)
Therefore,
Coronavirus Particles are 3,300 – 4,200 times smaller than the Pore size of Masks.
Virus Particles slip through these coverings.
The Masks are ineffective, useless.
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Average human Hair is about
[ 70 μm, micrometers ]
70/1,000 millimeter in diameter,
The human eye can see a hair [ 70/1,000 millimeter ] but
cannot see particles that are smaller than 50/1,000 – 60/1,000 millimeters,
[ 50 - 60 μm, micrometers ]
We do not know that Human can see one particle of hair or a hair made of strands in structure.
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[ 1 μm, micrometer = 1/1,000 or 0.001 millimeter ]
[ 1 micron = 1,000 nm ]
[ 1 nm = 1/1,000,000 millimeter ]
Bacteria : Bacterial cells range
in length, from about 1 to 10 microns [1/1,000–10/1,000 millimeters] and
in width, from 0.2 to 1 micron [0.2/1,000-1/1,000 millimeters].
They exist almost everywhere on earth. Some bacteria are helpful to humans, while others are harmful.
Viruses : Parasitic infectious microbes, composed almost entirely of protein and nucleic acids, which can cause disease(s) in humans. Viruses can reproduce only within living cells.
They are 0.004 to 0.1 microns [0,004/1,000 - 0.1/1,000 millimeters] in size, which is about 100 – 250 times smaller than bacteria.
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