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Galileo was the first to explicitly enunciate the special principal of relatitivity in his dialog concerning the two chief world systems.
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Henry Cavendish mesasures the force of gravity between two masses, leading to the first accurate value for the gravitational constant.
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Einstein published his first article on gravitational effects on light under special relativity.
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The term Theory of Relativity was coined by Max Plank
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Einstein was actively working to conceive of a general theory of relativity that would explain special relativity, but would also explain gravitation as a geometric phenomenon.
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Actually, the German mathematician David Hilbert submitted an article containing the correct field equations for general relativity five days before Einstein. Hilbert never claimed priority for this theory.
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nearly ten years after the foundation of special relativity, Einstein submitted his paper The Field Equations of Gravitation for publication, which gave the correct field equations for the theory of general relativity (or general relativity for short).
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Evidence that Relativity works.
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Einstein recieves the nobel prize.
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Albert Einstein, Leopold Infeld, and Banesh Hoffmann show that the geodesic equations of general relativity can be deduced from its field equations.
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Neutrinos found not to travel faster than light
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Georges Lemaitre Proposes the Big Bang Theory.
