Not Defying Gravity: John Moffat on Albert Einstein’s Centenary Theory and Beyond

John Moffat
John Moffat

Albert Einstein (1879–1955) remains to this day among the most famous and influential physicists, who developed the general theory of relativity, changing our understanding of light, gravity, and time.

A Canadian physicist and cosmologist, John Moffat is professor emeritus of physics at the University of Toronto, a senior researcher at the Perimeter Institute for Theoretical Physics and adjunct professor at the University of Waterloo.  He is the author of several books: Cracking the Particle Code of the Universe: The Hunt for the Higgs Boson, Reinventing Gravity: A Physicist Goes Beyond Einstein, and Einstein Wrote Back: My Life in Physics.

Q: This month marks the 100th anniversary of Albert Einstein’s theory of gravity known as general relativity. Can you briefly explain what Einstein proposed in this theory?

A: Einstein generalized his special theory of relativity to include accelerated frames of reference. This led him through the Equivalence Principle to formulate a theory of gravity, in which gravity is described by the warping of space-time by matter.

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