Gary S. Settles is professor of mechanical engineering and director
of the Gas Dynamics Laboratory at The Pennsylvania State University.
He earned his Ph.D. in 1976 from Princeton University. He is the
author of Schlieren and Shadowgraph Techniques (Springer,
2001). Address: 301D Reber Building, Pennsylvania State University,
University Park, PA 16802. Internet: email@example.com
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