Quote:
Originally Posted by Lzen
That was fascinating. I enjoyed that. Science is so cool sometimes.
But that didn't show anything about using a mask so I'm not sure how you can come to the conclusion you did.
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Common sense? You can see what happens with no mask. You know small breath droplets are too big to just pass through a mass unimpeded. They still sneak out the top and bottom, but they don't have the same trajectory or velocity.
Here's this.