Stefan Roth is a professor and student advisor for physics at RWTH Aachen University. He regularly participates in the course lectures on experimental physics and, as a student advisor, has direct contact with the students. He also enganges in research, in the field of neutrino physics. Achim Stahl is a professor of experimental physics at RWTH Aachen University. He regularly holds the introductory course in experimental physics for physics students, which gave rise to this book. His field of research is particle and astrophysics with particle accelerators, neutrinos, and gravitational waves.