The book "Study of the magnetic field: methodical instructions for laboratory work on TOE, part 3" is a unique manual created by the team of authors, which will become an indispensable assistant for students and teachers of technical and natural science specialties . This book contains methodological recommendations and practical tasks that will help to better understand the nature of magnetic fields and their impact on the world around them. The main purpose of this publication is not only to provide a theoretical basis, but also to develop practical skills in students, allowing them to independently conduct experiments and analyze the results obtained. The book covers a wide range of topics related to magnetic fields, including their properties, methods of measurement and applications in various fields of science and technology. Readers will be able to familiarize themselves with modern research methods, as well as with traditional approaches, which makes the material accessible to both beginners and more experienced researchers. This book will be of interest not only to students of technical universities, but also to teachers who are looking for high-quality methodological instructions for their laboratory work. It is suitable for high school students interested in physics and engineering, as well as for anyone who wants to expand their knowledge of magnetic fields and their practical application. If you are passionate about physics, electronics or engineering, then this publication will be a real find for you. The topics raised in the book concern not only the theoretical aspects of magnetic fields, but also their practical application in modern technologies. Readers will be able to learn about how magnetic fields are used in medicine, energy, as well as in various industries. The book also touches on environmental issues, showing how magnetic fields can affect the environment and human health. These aspects make the publication relevant and important in light of the current challenges facing humanity. The style of the authors is distinguished by clarity and accessibility, which makes it easy to assimilate complex concepts. They use a lot of examples and illustrations to make the material more visual and understandable. This is especially important for students who often face difficulties in understanding the theoretical foundations. It is also worth noting that the team of authors includes experienced teachers and researchers, which guarantees the high quality of the material presented. If you are looking for additional sources on the topic, pay attention to other works devoted to physics and engineering, such as "Physics: A Textbook for Universities" or "Electromagnetic Fields and Their Applications" . These books will help you deepen your knowledge and broaden your horizons in physics. In conclusion, “Study of the magnetic field: methodological guidelines for laboratory work on TOE, part 3” is not just a manual, but a whole world of opportunities for study and experiments. It inspires new discoveries and helps develop critical thinking, making it an important tool in every student’s and teacher’s arsenal. Do not miss the chance to immerse yourself in the fascinating world of magnetic fields and discover their secrets!