Transcription:
As a scientist, I provide the facts and let people draw their own conclusions. Here’s the facts. With respiratory pathogens. They get transmitted through large water droplets especially when we cough and sneeze. The primary mode of transmission of SARS Covid Virus 2 is through aerosols. There are three sizes of water droplets that come into your lungs. Large water droplets. Those are droplets that are over 60 microns. They have this trajectory under gravity where they quickly fall to the ground. Then there are small water droplets. These are between 10 and 60 microns. Then there are droplet nuclei, which are smaller than 10 microns. So when we are talking about aerosols we are talking about these droplet nuclei and small water droplets. If you want to visualize it, we breathe in cold air in the middle of the winter and we talk about “seeing my breath.” That’s the aerosols you are breathing in; that’s the aerosols condensing in the air. That’s a big clue and it doesn’t just drop to the ground. I wear glasses so when we breathe on it (the lenses) we fog them up. The moisture we are getting on there that is the aerosol. Scientific studies before this pandemic have shown that low-cost masks; we are talking about surgical masks and the cloth masks we are wearing have pore sizes that range from between 80 and 500 microns in size. So, a huge range, right? The diameter of the virus is one (1) micron. The largest possible “small” droplet that comprises a typical aerosol _____ to the viral particles is 62 microns in diameter. So let’s put that in perspective. The smallest pore size is 80. So that means the largest droplet coated with the virus can pass right through.
Now air is going to travel the easiest way out. Most of the air leaks out going out above our nose. The other leak point is out our cheeks here. What people say is, “Okay, there are leak points but if I have a properly fitting mask surely what you said can’t be true.” So let me see if I can show you this. We’ve been told to use up to three (3) masks. So, I’ve got one. Maybe I won’t get all these on. Because one thing that is interesting actually is my right ear is permanently deformed a little bit. It sticks out from my head more than the other one, because of all the mask wearing. So let me put on, here’s two masks; here’s three; the fourth one; don’t’ know if I’ll get the fifth one on. Okay, I have five masks, they are three-ply surgical masks with 15 layers. I’ll seal it around my mouth. Aerosol come through; they should fog up; we’ll see. See how foggy? Now watch this. I made a cross. Can you see my eye through that cross? There’s so much moisture there. So, I’m not going to say any more. I’ll just explain the science. So. . . this is crazy.
Notations:
At the 1:00 mark reference is made to: Non-Pharmaceutical Measures for Pandemic Influenza in Nonhealthcare Settings – Personal Protective and Environmental Measures. CDC, Emerging Infectious Diseases Journal, Volume 26, No. 5, May 2020. https://wwwnc.cdc.gov/eid/article/26/5/19-0994_article
The highlighted area reads: “no significant reduction in influenza transmission with the use of face masks”
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