In its completely revised third edition, this work offers excellent support for physics internships in the Bachelor's programme. In 12 chapters with a total of 52 topics, more than 200 individual tasks are described in detail, each with objectives, literature references, physical principles, instrument accessories and notes on measurement and evaluation. An innovative book for all students with a major or minor in physics. The new edition contains new experiments on microwaves, polarization, liquid crystals, X-rays, gamma spectroscopy, etc. In addition, the measurement methods have been largely converted to modern digital measurement technology.