Erosion of an Artificial Pebble (IMAGE) American Physical Society Caption This series of images depicts the evolution of a clay tile placed in a tumbling table to simulate the forces that shape natural pebbles. Credit D. J. Durian, H. Bideaud, P. Duringer, A. Schroeder, F. Thalmann, and C. M. Marques, Physical Review Letters, PRL 97, 028001 (2006) Usage Restrictions Contact the authors or the APS for photo permissions 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.