Human breath, schlieren image

Human breath, schlieren image

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Credit: DR GARY SETTLES/SCIENCE PHOTO LIBRARY

Caption: Human breath, schlieren image. Schlieren photography is an imaging technique that is used to show changes in the density of fluids and gases such as air, caused here by the warmth of the girl's breath. The image also shows the turbulence of the human breath.

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Keywords: biological, biology, black background, breath, breathing, child, colour, colours, convection, cut out, cut outs, cut-out, cut-outs, cutout, cutouts, density, exhale, exhaling, face, flow visualization, fluid dynamics, head, heat, heat transfer, human, imaging technique, optical, optics, people, person, physical, physics, profile, refractive index, respiration, schlieren, schlieren image, schlieren photography, silhouette, silhouetted, thermal plume

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