Schlieren Image Of Cough Photograph by Gary S. Settles

Schlieren Image Of Cough

by Gary S. Settles

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Title

Schlieren Image Of Cough

Artist

Gary S. Settles

Medium

Photograph - Photograph

Description

Coughing expels a turbulent air-jet with density changes that distort the beam of a schlieren optical system. The cough is known to project infectious aerosols deep into the surrounding air. The circular field-of-view is created by the 1-m-diameter parabolic mirror. For improved visibility the cougher inhaled some helium before coughing. In this example the colored background is a prismatic effect due to the dispersion of a lens in the optical system.

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July 7th, 2014

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