Modelling the spatial distribution of saliva droplets inside a lift reveals that an air purifier may actually increase droplet spread, by inducing flow circulation that can add to the transport of contaminated droplets in the cabin. (Courtesy: Talib Dbouk and Dimitris Drikakis)
Air purifiers in lifts (elevators) and other confined spaces could actually increase the spread of a
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Isabelle Dumé
is a contributing editor to Physics World