Researchers have found that smaller cough droplets may travel up to 6.6 metres and more under dry air conditions. Scientists from Institute of High Performance Computing in Singapore used high fidelity airflow simulation for the numerical study. They concluded that a 100 micrometre cough droplet under wind speed of 2 metres per second may travel up to 6.6 metres. Social distancing was found to be effective in addition to wearing masks, their study reiterated. They further stated that large droplets settled more quickly on the ground due to gravity while medium ones evaporated into smaller droplets, which are more easily borne by the wind. These evaporated droplets are more susceptible to be inhaled deep into the lungs after they become aerosols.