Good question. The "Norwegian CDC" early on (as most others seemingly) went out and said masks are not necessary. Then you had politicians openly saying (months later) that masks would be a good idea just to "signal" how "dangerous" Covid-19 is (this was openly said - so not some sort of conspiracy). The "CDC" were still skeptical and according to their calculations wearing masks in Oslo would "stop" 3 cases per week if everyone wore masks (this was in the summer when there were less spread - so now that number would be higher than 3). And now there is widespread recommendations to wear masks - even if they are not mandatory in that many situations (walking between tables in restaurants, public transport if you can't keep distance etc.).Goavegas wrote: ↑Thu Jan 14, 2021 12:53 pmDoes anyone know the size of a virus like the Corona and doe anyone know what size of particle can a face mask stop ?
The N95 type mask can stop particle not smaller than 30 micron,the Corona size is 10 Micron.
How do O know,Google.
What Google does not explain iscwhy we have to wear a mask that does not protect us from the virus,but this answer can be found elsewhere online.
God knows what changed. And if masks worked nearly as well as many seem to claim you got to wonder why the spread is just increasing in many European countries. I have been in online-meetings with people wearing masks even if they are basically alone in the office.
I get the point with spit. If you sneeze or occasionally when you talk, but you can't stop airflow with any of the masks we are talking about. Breading heavily you are actually creating small "jet streams" on the side of the mask. It would stop the spit, but not airflow.
Not that I care much about masks. I wear mine when I am asked to. And I wish they had been more effective than they seemingly are.
Hopefully Amazon won't shut down this board for you asking that question.