This university textbook presents the entire field of physics in a clear and mathematically grounded manner in one volume: mechanics, heat, electricity, optics, and the structure of matter. Included is a CD-ROM that contains around 150 virtual experiments, allowing the reader to engage in interactive experimentation. This fantastic opportunity enables a playful understanding of physical concepts. In addition to the textbook content and experiments, the CD-ROM also features fully solved exercises for each chapter, which are excellent for preparing for exams and tests.