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Watch this to see what sound looks like

A picture that shows the shock waves around a T-38 Talon aircraft on December 13, 1993.
Dr. Leonard Weinstein
/
NASA
A picture that shows the shock waves around a T-38 Talon aircraft on December 13, 1993.
A picture that shows the shock waves around a T-38 Talon aircraft on December 13, 1993.
Credit Dr. Leonard Weinstein / NASA
A picture that shows the shock waves around a T-38 Talon aircraft on Dec. 13, 1993.

Two parabolic mirrors, a barrier, a camera, and voilà! – you have a way to photograph sound waves – or more specifically, a way to photograph changes in air density.

Check out this video from NPR to see how it works:

http://youtu.be/px3oVGXr4mo

H/T Lucy Perkins

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