IMAGE2 (IMAGE) Nara Institute of Science and Technology Caption Schematics representing Ewald sphere and reciprocal lattice rods from a pyramid surface, reflecting diffraction patterns. Credit Ken Hattori Usage Restrictions Credit Required. 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.