thepea wrote: ↑Fri Jul 17, 2020 5:03 pm
chownah wrote: ↑Fri Jul 17, 2020 3:22 pm
thepea wrote: ↑Thu Jul 16, 2020 11:26 pm
It’s an impossibility for the homemade mask to stop the microscopic virus.
When someone coughs or sneezes the vast bulk of the virus is contained in water droplets which are stopped to one extent or another by even the most rudimentary mask. Even the worst masks can reduce the distance that the spray of water droplets which is emitted in a cough or sneeze can travel....also even the worst masks can capture some of the water droplets which contain the virus on/in the fabric of the mask which reduces the number of virus particles which enter the air.
So, even rudimentary masks can reduce the amount of virus emitted into the air and reduce the distance that the virus travels. So, even rudimentary masks can reduce the spread of the virus.
The virus is airborne in case you haven’t realized.
A simple breath can put virus into the air and it can stay in air for 3 hrs. According to last nights coverage on CNN.
The airborne particles go right through the mask due to its microscopic nature and because vast majority feel somewhat safe and protected they go out when symptomatic. My hand or sleeve stops more than a mask, but neither stop the airborne particles.
Learn to live with virus...
You seem to be thinking that "airborne" means individual virus particles floating in the air but I think that you are mistaken. This article (https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7293495/
) talks about what this means. An excerpt which directly deals with this:
Another classification is presented by Judson and Munster (2019), which is often referred to as the term of ‘airborne transmission’ to describe the disease spread by small droplet aerosols and droplet nuclei, while the term ‘droplet transmission’ to describe infection by large droplet aerosols. The term ‘airborne transmission’ defined by Morawska (2006) is quite similar to the same apprehended by Judson and Munster (2019)
Please note that the article does not define "aerosols" as being individual virus particles:
There have been numerous disagreements on the average particle size of droplets and aerosols (Shiu et al., 2019). The World Health Organization (WHO) and Centers for Disease Control and Prevention (CDC) postulate that the particles of more than 5 μm as droplets, and those less than 5 μm as aerosols or droplet nuclei (Siegel et al., 2007; WHO, 2014). Conversely, there have been some other postulations, indicating that aerodynamic diameter of 20 μm or 10 μm or less should be reckoned to be aerosols, based on their ability to linger in the air for a prolonged period, and the reachability to the respirable fraction of the lung (alveolar region) (Gralton et al., 2011; Nicas et al., 2005; Tellier, 2009). Small aerosols are more susceptible to be inhaled deep into the lung, which causes infection in the alveolar tissues of the lower respiratory tract, while large droplets are trapped in the upper airways (Thomas, 2013). For easy apprehension, aerosols can be defined as suspensions of solid or liquid particles in the air, which can be generated by either natural or anthropogenic phenomena (Judson and Munster, 2019; Tellier, 2009).
Please not the reddened portion where it concisely defines droplets and aerosols as being sold or liquid particles.....individual virus particles are not considered to be solid or liquid in that they are too small to exhibit characteristics which would be termed "solid" or "liquid".....hence, the term "aerosol" is not used in this study to indicate individual virus particles.
It could be that individual virus particles do float in the air and spread the disease but I did not read the entire article so if it talks about individual virus particles floating in the air I did not see it. If you can find a scholarly article which talks about individual virus particles floating in the air spreading the disease I would like to see it.
At any rate, it does seem from this article that droplets and aerosols describe a spectrum of solid and droplet sizes and that these are what are considered to be the usual path for spread of the virus (if you can find something else I"d like to see it) and it is easily understood that since large droplets can break up into aerosols then even if a mask just stops some large droplets and/or decreases the distance that large droplets travel then those actions alone will help to combat spread of the virus. Of course better the mask is both in the fineness of the fabric used and the fit of the mask the better it will be at stoping and/or decreasing the distance the droplets and aerosols travel which are a smaller size. But just about any mask will help to some degree.
You seem to have many concerns but you have not researched whether your concerns are just your ideas or the way the world actually works.