Particle locations (IMAGE) Penn State Caption In this study, the research team tracked the locations of 25,000 tiny particles that make up a two-dimensional disordered solid. Groups of particles rearrange as the solid is deformed. This diagram depicts when particles are rearranged as the material is deformed in one direction (left) or the opposite direction (right). Particles with colors at the extreme end of the scale (yellow, blue) deform later in this process Credit Keim research group / Penn State Usage Restrictions Credit must be given to the creator. License CC BY 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.