Motion Mountain - The Adventure of Physics : The Free Physics Textbook
This free textbook presents the science of motion: physics. The book is written for curious men, women, boys and girls: it is entertaining, surprising and challenging on every page. With little mathematics, starting from observations of everyday life, the text presents the most fascinating aspects of things that move. It explores mechanics, thermodynamics, special and general relativity, electrodynamics, quantum theory and modern attempts at unification. The essence of these fields is summarized in the most simple terms possible. For example, the text presents modern physics as consequence of the notions of minimum entropy, maximum speed, maximum force, minimum change of charge and minimum action.
Free download of Christoph Schiller's The Adventure of Physics 22nd Edition 
