Archive for March 2020

Visualization of air spread when coughing with 'Schlieren'

Published by Hilbert Hagedoorn 2

This video demonstrate how differently the air spreads when coughing. This visualizes the high importance of the World Health Organization's behavioral recommendations for protection against the coronavirus, which we should absolutely follow. Schlieren photography (from German; singular "Schliere", meaning "streak") is a visual process that is used to photograph the flow of fluids of varying density.
  


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