"Laboratory Workshop on Physics: Methodical Guidelines" . H. 3. Fluctuations, waves, structure of matter” by Belkov Yu. A. and Avenarius I. A. is an indispensable resource for students and teachers seeking to understand more deeply the physical phenomena associated with vibrations, waves and the structure of matter. This workshop not only enriches theoretical knowledge, but also provides an opportunity to put it into practice, making it an ideal tool for studying in universities and colleges. The third part of the laboratory workshop focuses on key aspects of physics that play an important role in understanding the world around us. Readers will be able to immerse themselves in the study of oscillatory processes, explore the mechanisms of wave transmission and consider the structure of matter at the microscopic level. Each topic is revealed through practical experiments that will help to consolidate theoretical knowledge and develop the skills of scientific analysis. The book will be of particular interest to students of physical, mathematical and engineering specialties, as well as teachers who are looking for high-quality methodological guidelines for organizing laboratory classes. It is suitable for both beginners and more experienced readers who want to refresh their knowledge or delve into the study of physics. If you are interested in topics such as mechanics, optics, thermodynamics or quantum physics, this workshop will be a valuable addition to the learning process for you. One of the key topics raised in the book is the interaction of vibrations and waves, which is the basis of many physical processes. The authors explain in detail how vibrations can produce waves, and how these waves, in turn, affect matter. This knowledge is not only useful for understanding physical phenomena, but also opens the door to more complex concepts such as acoustics, electromagnetism, and even quantum mechanics. The style of the authors is distinguished by clarity and accessibility of presentation, which makes complex physical concepts understandable even for those who first encounter these topics. Belkov Yu . A. and Avenarius I. A. are known for their scientific works and teaching aids, which have been recognized in the educational environment. Their approach to learning is based on the active involvement of students in the process, which makes studying physics exciting and interactive. Readers looking for similar books may pay attention to other works by authors, such as "Laboratory Workshop on Physics: Methodical Guidelines. H. 1. Mechanics" and "Laboratory Workshop on Physics: Methodical Guidelines. H. 2. Thermodynamics and Molecular Physics" . These books will also help to deepen knowledge in various fields of physics and prepare students for successful scientific activities. "Laboratory Workshop on Physics: Methodical Guidelines" . H. 3. Fluctuations, Waves, Structure of Matter" is not just a textbook, but a whole world into which readers immerse themselves, exploring the laws of nature. She will become a reliable assistant in the study of physics, inspiring new discoveries and experiments. If you want to not only learn the theory but also see how it works in practice, this practicum is your ideal choice.