Scientists have recently developed a new method for localizing the source of respiratory droplets. This technique is based on collecting and analyzing droplet properties, such as size and velocity. By using this method, scientists can determine the direction and distance of a droplet’s source. This could be incredibly useful for tracking the spread of airborne diseases, and helping to inform public health decisions. This breakthrough in droplet science could lead to more effective methods of controlling the spread of respiratory illnesses like the flu.

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source: Phys.org