How Well Do Masks Work? (Schlieren Imaging In Slow Motion!)

PBS Member Stations rely on viewers like you. To support your local station, go to: ↓ More info and sources below ↓ We’re on PATREON! Join the community ►► SUBSCRIBE so you don’t miss a video! ►► Wearing a mask is a cheap and easy way to help stop the spread of airborne infections like COVID-19. It’s also a sign that you want to help protect other people and have them protect you… that we’re all in this together. Here are some awesome slow-motion schlieren imaging experiments to demonstrate why masks work! Share with someone who needs to see this. References: Special thanks: Matthew Staymates - National Institute of Standards and Technology Dr. Richard Davis - Providence Sacred Heart Medical Center (