A workforce at Florida Atlantic University used lasers to check the effectiveness of various facemasks. Particularly they have been taking a look at masks with valves and plastic shields [without added covering]

Through New York Times:

However the brand new analysis, printed within the journal Physics of Fluids, reveals that face shields alone and vented masks enable giant plumes of particles to flee, placing these round you in danger. And whereas the analysis didn’t particularly have a look at the extent of safety the shields and masks supply the wearer, it does recommend that individuals who use them may additionally be extra susceptible to publicity than in the event that they wore an everyday masks. Valved masks are a specific concern — a few of the nonmedical vented masks the researchers used had defective valves, suggesting that some individuals could also be strolling round with open valves — primarily giant holes — of their masks.

See more!


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