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دراسة: قناع الوجه يحجب تقريباً كل قطرات الرذاذ الكبيرة المحملة بالفيروسات euronews.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from euronews.com Daily Mail and Mail on Sunday newspapers.
Masks block 99.9% of large COVID-19-linked droplets: study The study focused on particles larger than 170 microns in diameter - roughly two to four times the width of a human hair. Muslim worshipers, mask-clad due to the COVID-19 coronavirus pandemic, wait outside the historic al-Azhar mosque in the centre of Islamic Cairo as they arrive to perform the Friday prayers under new pandemic restrictions, in Egypt s capital on 28 August 2020. Picture: AFP. 93 days ago PARIS - Face masks reduce the risk of spreading large COVID-19-linked droplets when speaking or coughing by up to 99.9%, according to a lab experiment with mechanical mannequins and human subjects, researchers said Wednesday. ....
Masks block 99.9% of large COVID droplets kuwaittimes.net - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from kuwaittimes.net Daily Mail and Mail on Sunday newspapers.
Two maskless women gather signatures for a petition to recall California Governor Gavin Newsom, outside a Grocery Outlet Bargain Market in San Diego on Oct. 12, 2020. (Courthouse News photo/Barbara Leonard) PARIS (AFP) Face masks reduce the risk of spreading large Covid-linked droplets when speaking or coughing by up to 99.9%, according to a lab experiment with mechanical mannequins and human subjects, researchers said Wednesday. A woman standing 2 yards from a coughing man without a mask will be exposed to 10,000 times more such droplets than if he were wearing one, even if he is only less than 2 feet away, they reported in the journal Royal Society Open Science. ....
Published December 23, 2020 9:38pm Face masks reduce the risk of spreading large Covid-linked droplets when speaking or coughing by up to 99.9 percent, according to a lab experiment with mechanical mannequins and human subjects, researchers said Wednesday. A woman standing two metres (yards) from a coughing man without a mask will be exposed to 10,000 times more such droplets than if he were wearing one, even if he is only 50 centimetres away, they reported in the journal Royal Society Open Science. There is no more doubt whatsoever that face masks can dramatically reduce the dispersion of potentially virus-laden droplets, senior author Ignazio Maria Viola, an expert in applied fluid dynamics at the University of Edinburgh s School of Engineering, told AFP. ....