Side angle image, mid-flush (IMAGE) University of Colorado at Boulder Caption A powerful green laser helps visualize the aerosol plumes from a toilet while it’s being flushed. Credit John Crimaldi Usage Restrictions Credit must be given. License Original 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.