With coronavirus cases rising in the U.S., Europe and many other places across the globe, wearing a mask is more important than ever.

In our animation, we’ll show you how effective a swath of fabric can be at fighting the pandemic. https://nyti.ms/31ZcCyn 
Masks come in many styles and materials, but they generally work in the same way, using a system called filtration.

Layers of fibers capture large respiratory droplets and smaller airborne particles known as aerosols that can carry the virus. https://nyti.ms/3elEUIk 
The animation shows how the fibers of a cotton mask present a dense forest that the particles must navigate.

If you were the size of an aerosol particle, you might have to wade through more than a mile of this fiber forest to get to the other side. https://nyti.ms/3elEUIk 
Fibers of an N95 respirator, which are made of synthetic material, vary in size and are arranged randomly.

They also have an electrostatic charge that attracts and captures particles of all sizes, making them even more efficient. https://nyti.ms/3elEUIk 
Masks of all kinds vary in how efficient they are based on their shape and fit.

A good mask will have a large surface area, a tight fit around the edges, and a shape that leaves space around your nostrils and mouth. https://nyti.ms/3elEUIk 
When everyone wears a mask, the chance of transmission is reduced even more. Let’s say the mask you’re wearing filters half of the particles. Those that escape disperse and are further diluted. The ones that reach someone else’s mask get filtered again. https://nyti.ms/3elEUIk 
We also have an augmented reality component that lets you stand in front of the magnified fibers of an N95 respirator and launch particles to learn how the mask fibers capture them.

This link will take you to Instagram if you’re on your phone.
https://www.instagram.com/ar/2667468573568473/
Good ventilation and social distancing further reduce the risk of transmission.

See more of our animation that explores how masks capture the airborne droplets that can transmit the coronavirus. https://nyti.ms/3elEUIk 
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