The book "Fundamentals of solid state physics: a methodical manual for laboratory work for students of the specialty "Technical safety" by A. A. Poznyaka is an indispensable tool for students seeking a deeper understanding of the physical processes occurring in solids. In this manual, the author offers readers not only theoretical knowledge, but also practical skills that will help in further training and professional activities. The main purpose of the book is to introduce students to the basics of solid state physics, which play a key role in various fields of science and technology. It addresses such important topics as crystal structure, mechanical properties of materials, thermal conductivity, and electrical properties of solids. Poznyak not only expounds facts, but also immerses the reader in the fascinating world of physics, where each experiment and each formula become a step towards understanding complex phenomena. The book will be especially useful for students of technical specialties, as well as for those who are interested in physics and engineering. It is suitable for both first- and second-year students, as well as for anyone who wants to deepen their knowledge in materials physics. If you study such disciplines as mechanics, thermodynamics or materials science, this guide will be a reliable helper and source of inspiration for you. One of the key features of this manual is its practical focus. Each chapter includes laboratory work that allows students to apply theoretical knowledge in practice. These experiments not only strengthen the understanding of the material, but also develop the skills of working with scientific equipment, which is an important aspect of the training of future security professionals. The topics raised in the book are relevant not only for students, but also for practicing engineers and security professionals. In today's world, where technology is rapidly developing, knowledge of solids physics is becoming increasingly important. Poznyak’s book helps readers to understand how the physical properties of materials affect their application in various industries, from construction to manufacturing. The author's style is characterized by accessibility and clarity of presentation. A. A. Poznyak skillfully combines scientific rigor with simplicity, which makes his books understandable even for those who do not have deep knowledge in physics. His previous work has also been popular with students and faculty, indicating a high level of trust in his knowledge and teaching methods. If you’re looking for a high-quality solid-state physics textbook that not only teaches but inspires, A.’s Fundamentals of Solid State Physics A. This is exactly what you need.. This book will be your reliable companion in the world of science, opening up new horizons and opportunities for you. Do not miss the chance to deepen your knowledge and become a professional in your field!