REPLACEMENTS FOR RELATIVITY

摘要

British theoretician Paul Dirac devoted a large part of his later life to cracking the complex structure of general relativity. He was puzzled by the extraordinary similarity between certain large numbers in the universe, such as why the size and total energy of the visible universe seemed to be related to the strength of gravity on the Earth's surface. To Dirac, Einstein's theory was incomplete because it was unable to explain these coincidences; he felt there might be something more to gravity.