Sunday, July 05, 2020

How Well Do Masks Work?



The miracle of Schlieren imaging makes it clear how much comes from your nose and mouth, and how far it can travel when you don't wear a mask -or wear a mask under your nose. And if this isn't enough to make you care about infecting people around you, it may be enough to make you avoid other people who aren't wearing masks. (via Metafilter)

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