This is a discussion of a present category of science. For the work by Aristotle, see ?Physics ?. For a history of the science, see ?History of physics?. levitating above a high-temperature superconductor demonstrates the Meissner effect.]] Physics is the science of matterR. P. Feynman, R. B. Leighton, M. Sands (1963), The Feynman Lectures on Physics, ISBN 0-201-02116-1 Hard-cover. p.1-1 Feynman begins with the atomic hypothesis, as his most compact statement of all scientific knowledge: "If, in some cataclysm, all of scientific knowledge were to be destroyed, and only one sentence passed on to the next generations ..., what statement would contain the most information in the fewest words? I believe it is ... that all things are made up of atoms -- little particles that move around in perpetual motion, attracting each other when they are a little distance apart, but repelling upon being s

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