Raphael is a specialist in the didactically guided use of VR and AR technologies. As a professor, he leads the Chair for Computer Science Education / Computer Science and Society at the Humboldt University in Berlin, Germany. Previously, he researched at the University of Potsdam, where he led the VR/AR Learning division. He is also the vice-spokesperson of the educational technologies section of the German Informatics Society (GI) as well as the initiator and spokesperson of the GI working group VR/AR Learning.