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The theory of relativity usually encompasses two interrelated physics theories by Albert Einstein: special relativity and general relativity, proposed and published in 1905 and 1915, respectively. Special relativity applies to all physical phenomena in the absence of gravity.
General relativity, also known as the general theory of relativity and Einstein's theory of gravity, is the geometric theory of gravitation published by Albert Einstein in 1915 and is the current description of gravitation in modern physics.
In general relativity, you specify the metric tensor (gravitational potential) and the geodesic equation tells you the trajectory of an object (for example, the orbit of a planet). In Newtonian physics, you specify the gravitational potential and Newton’s second law tells you the trajectory.
May 2, 2024 · General relativity, part of the wide-ranging physical theory of relativity formed by the German-born physicist Albert Einstein. It was conceived by Einstein in 1916. General relativity is concerned with gravity, one of the fundamental forces in the universe.
- The Editors of Encyclopaedia Britannica
General Theory of Relativity. General Relativity theory, developed by Einstein in 1907-1915, states that being at rest in the gravitational field and accelerating are identical physically. For example, an observer can see the ball fall the same way on the rocket and on Earth.
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Einstein’s Theory of General Relativity is a theory developed by Einstein in order to describe gravity in a way that is consistent with Special Relativity and the propagation of light.
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Black holes and the expanding universe are two concepts that have their roots in general relativity. Even GPS satellites must account for general relativistic effects to deliver accurate position measurements to people on Earth.
