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Human droplets and aerosols

Montag 25. Januar 2021, 16:00 Uhr

Physikalisches Kolloquium

Prof. Dr. Dr. h.c. E. Bodenschatz (MPI for Dynamics and Self-Organization, Göttingen):

SARS-CoV-2 is transmitted by human aerosols and droplets. I will give an overview of their formation, their propagation modalities and their deposition in the respiratory tract. I shall present measurements of 127 volunteers totaling more than 67 hours of measurements. We measured all age groups with 53 female and 74 male. We conducted 1362 experiments on breathing, singing, shouting, humming and coughing. We analyzed 9000 holograms and 2mio images for 3D particle tracking. With this data we now have a very good data base that allows us to predict the risk of
infection in a room.

For this purpose we wrote the webapp HEADS (aerosol.ds.mpg.de) and developed a theory for the infection risk, if more than one virus is within one aerosol. I will show why face masks give excellent protection, why playing wind instruments is possible again, and why singing without mask is not a good idea. I shall also discuss  entilation
strategies and simple solutions for it.


Online-Vortrag via Zoom, weitere Inforamtionen unter https://www.ur.de/physik/fakultaet/aktuelles/kolloquium/


Fakultät für Physik

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