Chris Cude, IU Center for Spacetime Symmetries (image) Indiana University Share Print E-Mail Caption Chris Cude, who was an undergraduate student at IU Bloomington at the time of the study, looks at the neutron detector of the UNCtau experiment. The device gives off a green light when neutrons interact with it. Credit IU Center for Spacetime Symmetries Usage Restrictions None Share Print E-Mail 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.