Science indicates droplets evaporate and become aerosol at a rate dependent on initial size and environmental factors.
Which has greater aerosol dispersement?
1) droplets dispersed onto a fabric at an approximate height of 6 feet, circulated and evaporated by manual transportation and convection?
2) droplets dispersed into the air and subject to normal gravity and air circulation?
-rws
While the largest expiratory droplets quickly hit the ground, the airborne lifetime of droplets smaller than approximately 150 µm is mainly defined by their evaporation characteristics. The airborne lifetime of droplets with an initial diameter of less than 50 µm is mainly determined by their equilibrium size. Most importantly, these small droplets may stay airborne for more than one hour. It could be demonstrated that the experimentally determined ratio between initial and equilibrium diameter may affect the airborne droplet lifetime considerably.
