Researchers at Florida Atlantic University’s engineering department showed GMA Investigates how fit and placement influence the effectiveness of face masks. “We tried to see how different ways of wearing the mask would affect the amount of droplets that escape,” said Dr. Sid Verma, an assistant professor
Researchers at Florida Atlantic University’s engineering department showed GMA Investigates how fit and placement influence the effectiveness of face masks.
“There were no droplets that were able to pass through the material,” said Verma. ”But we noticed that there were droplets escaping, primarily from the gap along the top edge of the mask.” From their observations of the demonstrations, researchers reported that particles escaping from the top of the mask usually start moving backwards, behind the mannequin. The particles can easily be carried to the right, left or behind a person, said Verma, depending on the ambient air flow conditions in the room. “That’s why it’s so important to keep practicing social distancing even when everybody’s using a mask,” he said.
In this demonstration, particles were visibly streaming from the top of the homemade mask, which did not have an internal nose clip.“When quality masks restrict the flow of droplets through the material, these droplets tend to get redirected to wherever there’s small gaps or openings in the mask,” said Verma.
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