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"A free ebook in six colour pdf files on physics, the science of motion. Explore the motion of muscles, animals, stones, lightning, stars, light and empty space itself! Be fascinated by the beauty of nature and the concepts of modern physics, from the principle of cosmic lazyness - least action - to gauge symmetry! Browse it here."

" Browse Our Free and Open Textbooks We are serious about publishing great textbooks. Each of our books meets the same rigorous standards - written by expert authors, peer-reviewed, and professionally edited and developed - before reaching your desk. Can't find what you are looking for? Let us know, and we'll get back to you with our plans to publish in the areas you teach. "

" Our Choice will change the way we read books. And quite possibly change the world. In this interactive app, Al Gore surveys the causes of global warming and presents groundbreaking insights and solutions already under study and underway that can help stop the unfolding disaster of global warming. Our Choice melds the vice president's narrative with photography, interactive graphics, animations, and more than an hour of engrossing documentary footage. A new, groundbreaking multi-touch interface allows you to experience that content seamlessly. Pick up and explore anything you see in the book; zoom out to the visual table of contents and quickly browse though the chapters; reach in and explore data-rich interactive graphics. "