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It's Okay to Be Smart: How Well Do Masks Work? (Schlieren Imaging In Slow Motion!)

7 minutes 25 seconds

Now Playing As: Captioned (English) (change)

Wearing a mask is a cheap and easy way to help stop the spread of airborne infections like COVID-19. Here's some slow-motion Schlieren imaging experiments to demonstrate why masks work. Part of the "It's Okay to Be Smart" series. Please note this title contains mature themes and references.

Media Details

Runtime: 7 minutes 25 seconds

Topic: Health and Safety, Science
Subtopic: Diseases and Conditions, Science Experiments, Science Methods
Grade/Interest Level: 9 - 12
Standards:

Release Year: 2020
Producer/Distributor: PBS Digital Studios
Series: It's Okay to Be Smart

Still image from: It's Okay to Be Smart: Counting the Species in My Backyard

Many hot air balloons taking off into the sky.

Man in glasses and cardigan holds palms together with lips parted in mid-speech. He stands before a green background with white scratches.

Different math equations and graphs are drawn, with a butterfly as the backdrop.

Sixteen eyeballs, each with different eye color. Caption: Martin-Schultz scale.

A group of animals, a gorilla, a rhino, a lemur cat, and a scaled lizard.

Seven different butterflies, where four are placed at the corners facing the butterfly at the center and two at either side of the central butterfly.

An animal with the body of a lion, an extra goat head on its back, and a snake instead of a tail. Caption: Chimera.

A view of Moon in the dark sky. Caption: Maria, Latin for seas, and Sea of Tranquility, Mare Tranquillitatis.

A star filled night sky. Caption: P B S.

Viewer Comments

Lindsey S. (Bellevue, NE)

December 2nd, 2020 at 02:47 PM

Parts of this video are definitely geared towards older students, but I showed the beginning to a 4th grader and she was astounded by the Schlieren Imaging. It gave her a much better understanding of why masks are important (especially keeping it over your nose).
Carrie W. (Algonquin, IL)

October 7th, 2020 at 08:29 AM

Extremely informative. Wonderful visualization!