While the debate on masks is still going on after the spread of coronavirus, some researchers used a LED lighting system and a high-speed camera to prove the effectiveness of various face coverings. They recorded videos of people talking, coughing, and sneezing. In one plot, the person was not wearing any mask; in two others, they wore two different kinds of cloth masks; and in the last one, the person wore a surgical mask. Check out the video to know how masks work in preventing COVID-19.
