Masterclasses
Every year, about 10,000 students from more than 37 countries visit nearby universities and research institutes to unravel the mysteries of particle physics for a day. Lectures by active scientists provide an insight into the methods of basic research into fundamental questions of elementary particles and forces. With this knowledge, students can make their own measurements on real data sets from the large particle physics experiments at CERN. As in an international science collaboration, participants discuss their results with other institutes in other countries in a video conference at the end of the day. These events are organized as part of the International Masterclasses of the International Particle Physics Outreach Group. The Department of Physics at TU Dortmund University offers three International Masterclasses in this context.



![3D visualisation of human neuronal tissue reconstructed by multi-scale X-ray phase contrast tomography. Neuronal cell nuclei are shown in yellow for the granule neurons in the dentate gyrus region of the hippocampus. Blood vessels are shown in red. By changing the X-ray optical magnification in the multi-scale recordings, one can zoom into regions-of-interest (red ovals). In these scans the resolution is high enough to resolve sub-structures of the nucleus, associated with different DNA packing regimes. Adapted from [6]](/storages/physik/_processed_/e/4/csm_Kolloquium_Salditt_0e30a3f090.png)




