IMAGES: Liquid Vision

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Science  16 Mar 2001:
Vol. 291, Issue 5511, pp. 2053
DOI: 10.1126/science.291.5511.2053b

A body in motion tends to stay in motion even when that body is a drop of milk. This image of tinted milk resisting a sudden change in motion is just one of many in Mark Cramer's Gallery of Fluid Dynamics, a Web site illustrating the physics and beauty of fluids. Photographers Richard Turlington and Loren Winters created the elongated drops by lifting the platform on which the milk rested, then suddenly jerking it downward. Cramer, a professor of engineering at Virginia Polytechnic Institute and State University in Blacksburg, includes images of shock waves from wind-tunnel experiments and supersonic cars, vortices (which include tornadoes and smoke eddies), and the plasma bow shocks we know as auroras. Interesting links range from Winters's high-speed photography site at the North Carolina School of Science and Mathematics to animations of breaking waves.

For those seeking total immersion, check out, a new site started by two engineering professors that includes a Who's Who, job listing, conferences, gallery, and links to fluids tutorials.

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