Feynman Lectures on Physics . 3. Radiation. Waves. Quanta. 4. Kinetics. Heat. Sound is a unique work created by eminent physicists Richard Feynman, Robert Layton and Matthew Sands. This book is the third and fourth part of the famous course of lectures, which has become a classic in the world of education and science. It is designed for those who want a deeper understanding of physics and its fundamental principles, as well as for students, teachers and anyone interested in science. The book covers a wide range of topics related to radiation, waves, quantum mechanics, kinetics, heat and sound. Feynman and his co-authors masterfully explain complex concepts, making them accessible and understandable even to those who do not have deep knowledge in the field of physics. Each section is filled with fascinating examples, vivid illustrations and exciting stories that make learning not only informative, but also interesting. The topics raised in this book cover both classical and modern physics. You will be able to learn how waves and radiation work, what laws govern heat and sound, and how quantum mechanics changes our view of the world. Feynman not only shares knowledge, but also inspires the reader to further research, encouraging him to ask questions and seek answers. This makes the book not just a textbook, but a real guide to the world of physics. The book will be especially interesting for students studying physics, as well as teachers who are looking for a way to make their classes more exciting and interactive. If you are a high school student or a student preparing for exams, or just a science lover who wants to expand your horizons, Feynman Lectures will be a real discovery for you. This book is suitable for readers of different ages, from schoolchildren to adults seeking self-education. The style of Feynman, known for his wit and ability to explain complex things in simple language, makes reading fascinating and easy. His approach to teaching and explaining physics has inspired generations of scientists and students. Combined with clarity and logic of presentation, Feynman Lectures become not just a textbook, but a real work of art that can change your perception of science. If you are interested in such works as “A Brief History of Time” by Stephen Hawking or “Physics for Future Presidents” by Jeremy Bernstein, then this book will be an excellent addition to the library for you. Readers who are looking for a deep understanding of physical processes and phenomena will find in it a lot of useful and fascinating ideas. Do not miss the opportunity to immerse yourself in the world of physics with the Feynman Lectures. This book will not only enrich your knowledge, but will also give you inspiration that can change your life. Discover the amazing world of science that awaits you in the pages of this outstanding work