Experimental Micrograph (image) University of Bristol Caption This is an experimental micrograph of 90 µm polystyrene spheres in aqueous solution. Credit Image courtesy of Mihai Caleap, University of Bristol, copyright © 2014 Usage Restrictions The image is for single-use only and should not be archived. 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.