Rust Spores (IMAGE) Virginia Tech Caption High-resolution microscopy of rust spores on a wheat plant (right). The We value represents the impact speed and surface tension of water. Photos courtesy of Hyunggon Park. Credit Virginia Tech Usage Restrictions None 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.