Leading the 4th Concept (IMAGE) Iowa State University Caption Iowa State University's John Hauptman told a gathering of physicists he had another idea for building a particle detector for the proposed International Linear Collider. Credit Photo by Bob Elbert 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.