Diagnosing Chaos (IMAGE) Virginia Tech Caption So-called "Poincaré sections" were used to diagnose chaos in the body-flow interaction study of Johan Roenby of the Technical Univeristy of Denmark and Hassan Aref of Virginia Tech. The regular curves correspond to motions with minimal chaos. The "fuzzy" regions indicate that the chaotic regime has been entered. Credit Johan Roenby Usage Restrictions Use of the image is permitted when discussing Roenby and Aref's research on chaotic motion of a solid body moving through a fluid. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.