Diamond Light Source (Diamond) is the UK’s national synchrotron science facility, based in Oxfordshire. It speeds up electrons to near light speeds, producing a light 10 billion times brighter than the Sun. Scientists use this light to study a range of materials from viruses to jet engines. On beamline I11 we use the light for diffraction experiments to study very fast and very slow changes in powders. But what is diffraction? And what does it tell us? Come along to learn about diffraction, beamline I11 and the science we do at Diamond.