rimed ice particle (IMAGE) Johannes Gutenberg Universitaet Mainz Caption A rimed ice particle, in this case a graupel pellet, created for experimental use in the Mainz vertical wind tunnel. Credit photo/©: Alexander Theis Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. No derivatives or adaptations of the work are permitted. License CC BY-NC-ND 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.