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+--- Thread: What is general relativity? (/thread-1003.html)
What is general relativity? - C C - Jun 17, 2015
https://plus.maths.org/content/what-general-relativity
EXCERPT: When physicists talk about Einstein's equation they don't usually mean the famous E=mc2, but another formula, which encapsulates the celebrated general theory of relativity. Einstein published that theory a hundred years ago, in 1915. To celebrate its centenary we asked physicist David Tong of the University of Cambridge to explain what general relativity is and how Einstein's equation expresses it. You can watch his explanation in the video below, or read on...