3 ms·
> whether masks with holes orders of magnitude larger than the airborne virus particles they are supposed to stop are effective N95 masks work due to a dipole
by bsilvereagle 4y ago
> whether masks with holes orders of magnitude larger than the airborne virus particles they are supposed to stop are effective
N95 masks work due to a dipole charge, not necessarily because of the mechanical filtration size.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7724761/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7724761/
- ceejayoz 4y agoThey've also got a substantially better seal around the edges.
- taf2 4y agoWhich makes them super comfortable
- nerfhammer 4y agominutephysics has a nice video https://www.youtube.com/watch?v=eAdanPfQdCA https://www.youtube.com/watch?v=eAdanPfQdCA
- AlexandrB 4y agoErrr, the linked study directly contradicts your point: > In both respirators, large decreases in the dipole charge density were observed after several heat treatments. However, there was no significant drop in filtration efficiency because multiple parameters (i.e., mechanical filtration) were involved in the filtration performance.