Stephen Wolfram: A New Kind of Science: About the Book. The Particle Adventure. The Museum of Unworkable Devices Physics Gallery. Perpetual motion machine inventors do have principles.
Unfortunately the physical principles they assume are often ones not obeyed by nature. Let's examine just a few. The principle of unlimited possibility. Anything is possible in nature. The "heavier on one side" seduction. What causes gravity. Imagining the Tenth Dimension. TOP TEN UNSOLVED PROBLEMS IN PHYSICS. What causes gravity - dark energy, the new aether. WIKISKY.ORG. Universe Today — Space and astronomy news.