This video by “Skunk Bear” of National Public Radio (NPR) shows the basics of Schlieren Flow Visualization techniques, then utilizes the technique to show the sound waves of a clap, a book landing on a table, the snapping of a towel, a firecracker, and an AK-47.
Produced by: Adam Cole
Hands shot by: Meg Vogel

Schlieren images provided by: Mike Hargather, Amber Kates, Bobby Gold, J. W. Tang, A. Nicolle and J. Pantelic

Music “Eileen” by: Lee Rosevere