A good physics book for someone who is not a complete beginner should strike a balance between being easy enough to understand for a non-expert, while also providing enough depth and complexity for more knowledgeable readers. It should also have a clear and engaging writing style, and use relevant and relatable examples to help explain difficult concepts.
This can vary depending on the individual's interests and prior knowledge, but some common areas that are suitable for non-beginners include classical mechanics, electromagnetism, quantum mechanics, and thermodynamics. It's also important to choose a book that aligns with the reader's specific interests within these broader topics.
One way to determine the level of difficulty is to look at the intended audience mentioned in the book's description or reviews. Another way is to flip through the book and see if the concepts are explained in a way that is easy to follow and understand. Additionally, checking the author's background and credentials can give an indication of the book's intended audience.
Some popular authors for physics books for non-beginners include Brian Greene, Michio Kaku, and Stephen Hawking. As for publishers, some well-respected ones in the field of physics are Oxford University Press, Cambridge University Press, and Princeton University Press.
You can find good physics books for non-beginners both online and in physical bookstores. Online retailers such as Amazon and Barnes and Noble have a wide selection of physics books, and you can also find reviews and ratings from other readers to help you make a decision. However, visiting a physical bookstore can also be beneficial as you can browse and flip through the books before making a purchase.