Knotted Loops (IMAGE) University of Warsaw, Faculty of Physics Caption Knotted loops settling in a viscous fluid: experiment (left) and computer simulation (right). Credit Source: P. Szymczak, UW Physics Usage Restrictions The image may only be used with the following caption: Knotted loops settling in a viscous fluid: experiment (left) and computer simulation (right). (Source: P. Szymczak, UW Physics) 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.