Below is the result of the experiment of Dr. Alfredo Soldati, professor of fluid dynamics at the University of Udine and director of the Institute of Fluid Mechanics and Heat Transfer of the Technische Universität of Vienna.
The video shows the efficiency of the different protective devices against the direct transmission of the infection, comparing a cotton mask, a protective screen and a surgical mask 😷
Source: https://www.tuwien.at/en/
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