Human coughing, schlieren image

Human coughing, schlieren image

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Caption: Human coughing, 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 turbulence produced by the coughing action. The jet of air expelled by coughing projects infectious pathogens deep into the surrounding air. Both the tongue and the nasal airflow are seen. Photographed at Pennsylvania State University, USA.

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Keywords: adult, aerosol, airflow, biological, biology, breath, bronchitis, clinical, cold, colour, colours, common cold, convection, cough, coughing, density, disease, expel, flow visualization, fluid dynamics, fluid mechanics, gas dynamics laboratory, germ, health, healthcare, human, illness, imaging technique, infection, influenza, lungs, male, man, medical, medicine, north america, north american, optical, optics, pennsylvania state university, people, person, physical, physics, profile, pulmonary, refraction, refractive index, respiratory, schlieren, schlieren image, schlieren photography, sickness, silhouette, silhouetted, turbulence, united states, usa, virus

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