The second book, “Entertaining Physics,” is an independent collection that is not a direct continuation of the first. The book is called “second” only because it was written later than the first. The success of the first collection prompted the author to process the rest of the material he had accumulated, and thus this second, or rather another book, covering the same sections of physics, was compiled. To revive interest in physical calculations, computational material has been introduced into it, and the collection, in general, is designed for a more prepared reader, although the difference in this regard between both books is so insignificant that they can be read in any order and independently of one another. “Entertaining.” Physics" will help you understand and love physics, and achieve success in studying this subject. This collection is not intended to replace official textbooks, but it will tell you about physical phenomena in a completely different way, in a simple and understandable language for everyone. The purpose of the book is to stimulate the activity of the scientific imagination, teach you to think in the spirit of physics and develop the habit of versatile application of your knowledge. Perhaps this is where the love for physics begins.