CNM Combined Image (IMAGE) DOE/Argonne National Laboratory Caption Left graph plots exceptional point conditions in three-dimensional space, calculated from experimental measurements in CNM, forming an exceptional surface with an exceptional saddle point, indicated by the point at the intersection of the dark lines on the surface. Right graph plots energy dissipations of the two modes (photon and magnon), where different dependences on the tuning parameters occur near the intersection of blue and red surfaces. Credit Argonne National Laboratory 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.