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What is the size of Coronavirus?
And
What is the size of the pores / holes in an N95 mask?
And
What is the size of the pores / holes in an N95 mask?
The size of pores of an N95 masks is approx:
300 NANOMETERS
Initially it was thought Coronavirus was big:
400 to 500 NANOMETERS
Now, recent findings show it can be much smaller, between 60 and 140 NANOMETERS
So, can it penetrate an N95 masks?
Disclaimer: My limited research
300 NANOMETERS
Initially it was thought Coronavirus was big:
400 to 500 NANOMETERS
Now, recent findings show it can be much smaller, between 60 and 140 NANOMETERS
So, can it penetrate an N95 masks?
Disclaimer: My limited research
1/1 N95 masks are 3D filters. So even if their pore size is 300 nanometers, they can stop 95% of particles smaller than 300nm
If it was a simple 2 D sieve filter then it cannot stop anything smaller than 300nm.
But 3D filters can stop particles smaller than it& #39;s pore size.
HOW?
If it was a simple 2 D sieve filter then it cannot stop anything smaller than 300nm.
But 3D filters can stop particles smaller than it& #39;s pore size.
HOW?
2/3 Besides sieve action the N95 has 3 other filtration mechanisms
1) Inertial
2) Diffusion
3) Brownian Effect
The Brownian Effect is most interesting. It acts on tiny virus & trap them in N95. Gas molecules continously bombard the tiny virus making them jump around continously
1) Inertial
2) Diffusion
3) Brownian Effect
The Brownian Effect is most interesting. It acts on tiny virus & trap them in N95. Gas molecules continously bombard the tiny virus making them jump around continously
3/3 As the tiny virus is passing thru an N95 they are also jumping around as they are bombarded by gas molecules, so they get trapped in the N95 fibers.
So 95% of the virus 60 nm virus gets trapped although the N95 pore size is 300 nm.
There is more.
I will try to make a video.
So 95% of the virus 60 nm virus gets trapped although the N95 pore size is 300 nm.
There is more.
I will try to make a video.
Continuing on yesterdays thread:
Cloth masks are good enough for us. But for doctors &nurses in ICU they need minimum N95 or better
Initially they thought Coronavirus is carried in droplets/aerosols and not airborne by itself. Now they are not ruling out that it can be airborne.
Cloth masks are good enough for us. But for doctors &nurses in ICU they need minimum N95 or better
Initially they thought Coronavirus is carried in droplets/aerosols and not airborne by itself. Now they are not ruling out that it can be airborne.
