cotton mask, FFP mask, or Face Shield? Which face is the suitable protection at best, to slow the spread of any virus-containing aerosols in enclosed spaces, have been studied by researchers of the faculty of health at the Technical University of Central Hesse.
sheet-makers in the Rhein-Main-Zeitung.F. A. Z.
The scientists, Henning Schneider, and Keyvan Sohrabi simulated the propagation of tiny particles, as you stumble when you Speak, Sing, cough or Sneeze out. It was assumed that a Person on a Standard work station sits in front of an office monitor, and even sneezes. The spread of the aerosol cloud, the researchers calculated with the method of numerical fluid mechanics. Your calculations, you re-examined with a laser flexors, which can measure the distribution of particles in liquid or gaseous media.
aerosols spreading up to eight meters far
Sneezes, the Person without a mask, the aerosol cloud within a second more than two and a half meters in Niesrichtung, and may extend a maximum of eight meters. A cotton mask also prevents a spread of about 1.5 meters, reduced the propagation rate and causes the particles to fall quickly. The usual clearance is maintained, as a rule, offers you effective protection for the office colleagues.images
Also, FFP-masks can protect the wearer even before a contagion, are the Simulation according to the sense. Because these masks are but a poet than a simple mouth-nose protection, arises when Sneezing, a high pressure, the result is that a part of the aerosol escapes to the top.Updated Date: 21 July 2020, 08:20