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  • ...for centuries have been trying to prove it. Many great thinkers such as [[Aristotle]] attempted to use non-rigorous geometrical proofs to prove it, but they al
    2 KB (329 words) - 11:46, 20 November 2012
  • The concept of gravity was first suggested by the ancient Greek thinker [[Aristotle]], who suggested that every object's "natural tendency" was to be at rest o
    2 KB (318 words) - 16:36, 10 March 2014