Motion Mountain a free physics textbook written by Christoph Schiller. It aims to produce a simple, vivid and up-to-date introduction to modern physics, with emphasis on the fundamental ideas of motion. 'Simple' means that concepts are stressed more than formalism; 'vivid' means that the reader is continuously challenged; 'up-to-date' means that modern research and ideas about unification are included.
With little mathematics, starting from observations of everyday life, the text explores the most fascinating parts of 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. 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.
The text is written for self-study. In its teaching method, the project tries to satisfy several needs. First of all, the explanations are written in a way that should appeal both to people who prefer thinking in images and to people that prefer thinking in words. Furthermore, the content has been selected to attract both male and female readers. Next, the text is written to appeal to composer and to competitor characters. Furthermore, the text tries to cater both for the experimentally and the theoretically inclined. Finally, the story should appeal to those who like the natural sciences and to those who like the humanities.
Website: Motion Mountain Homepage