Motion Mountain – The Free Physics Textbook
Explore the motion of plants, animals, lightning, satellites, charges, light and empty space itself! Be fascinated by molecular motors, black holes, the beauty of nature and the simplicity of how it works: Explore the principle of cosmic laziness – least action –, the maximum speed, the largest distance, the highest power, and gauge symmetry, the symmetry that explains electric motors, radioactivity and quarks!
editor’s note – this site contains one of the most fascinating pages I have come across recently. it’s a 9-line summary of textbook physics that agrees with all known observations to man.
even if you don’t understand it (and to be honest, we’re still working on it), it’s still a wondrous sight to behold that nature can be simplified so elegantly.