Ask HN: How do surgical masks filter airborne viruses?
Just read 3M's n95 surgical mask data-sheet[1] and claims to contain an "advanced electrostatic media". However, there is no technical data on its working mechanism. My guess is that this is just a net charged cloth that filters viruses by repelling/trapping them. If this is indeed how it works and was charged during assembly, then the electrostatic charge will probably wear out with usage.I...