Monday, 27 October 2008

Seeing the invisible

Dog sniffing flower, photo by Gary Settles published on blog good news by Isabella LychowskiAn Airedale dog sniffing a small flower, which was warmed to help make the airflow visible.
Photo: Gary Settles/Penn State

At Pennsylvania State University, a professor of engineering has captured something less whimsical but no less ephemeral — a cough — on film.

The image, published online Oct. 9 by The New England Journal of Medicine, was created by schlieren photography, which “takes an invisible phenomenon and turns it into a visible picture,” said the engineering professor, Gary Settles, who is the director of the university’s gas dynamics laboratory.

Story: The Mysterious Cough, Caught on Film
By Denise Grady
Published: NYT, October 27, 2008

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