Free Physics Text Book - Motion Mountain

"How do objects and images move? How can animals move? What is motion?

How does a rainbow form? Is levitation possible? Do time machines exist? What does 'quantum' mean? What is the maximum force value found in nature? Is 'empty space' really empty? Is the universe a set? Which problems in physics are still unsolved?"

Motion Mountain tells the story of how it became possible, after 2500 years of exploration, to answer such questions. You can download this free pdf story that is written in 6 chapters. The chapters are:

1. Fall, Flow and Head
2. Relativity
3. Lights, Charges and Brains
4. Quantum Theory: The Smallest Change
5. Pleasure, Technology and the Stars
6. Motion without Motion - What are Space, Time and Particles?

On the 2st edition (as of December, 2007), the book is from a social science perspective that starts with "observations of everyday life."

Check out the wiki to see what news and updates is happening with the book.