Ideas & society2020 · shared on Hacker News
Low-cost measurement of facemask efficacy for filtering expelled droplets
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Ybookofjoe ·
Cloth masks do protect the wearer
172 points187 comments
Ypat2man ·
Low-cost measurement of facemask efficacy for filtering expelled droplets
107 points88 comments
Ysimpleflyong ·
American Airlines bans masks with exhaust valves and vents
63 points106 comments
Yerohead ·
Researchers created a test to determine which masks are the least effective
6 points1 comments
Ydpeck ·
Low-cost measurement of facemask efficacy for filtering
1 points0 comments