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  1. A frame field in general relativity (also called a tetrad or vierbein) is a set of four pointwise - orthonormal vector fields, one timelike and three spacelike, defined on a Lorentzian manifold that is physically interpreted as a model of spacetime. The timelike unit vector field is often denoted by and the three spacelike unit vector fields by .

  2. Einstein and Hilbert. The events of interest to historians of the dispute occurred in late 1915. At that time Albert Einstein, now perhaps the most famous modern scientist, [1] had been working on gravitational theory since 1912. He had "developed and published much of the framework of general relativity, including the ideas that gravitational ...

  3. In Einstein 's theory of general relativity, the Schwarzschild metric (also known as the Schwarzschild solution) is an exact solution to the Einstein field equations that describes the gravitational field outside a spherical mass, on the assumption that the electric charge of the mass, angular momentum of the mass, and universal cosmological ...

  4. General relativity. Special relativity allows the comparison of clocks only in a flat spacetime, which neglects gravitational effects on the passage of time. According to general relativity, the presence of gravitating bodies (like Earth) curves spacetime, which makes comparing clocks not as straightforward as in special relativity.

  5. Exact solutions in general relativity. This category lists exact solutions to the Einstein field equation, an equation used in general relativity to determine the curvature of spacetime. Note that the identification of solutions to this equation can be very difficult. Identified solutions are quite noteworthy within physics research.

  6. General Relativity. En physique, et spécialement en théorie de la relativité, General Relativity est un livre scientifique populaire, écrit par Robert Wald et portant sur la théorie de la relativité générale d' Einstein .

  7. In the framework of general relativity the Maxwell equations or the Einstein field equations have the same form in arbitrary frames of reference. Several principles of relativity have been successfully applied throughout science , whether implicitly (as in Newtonian mechanics ) or explicitly (as in Albert Einstein 's special relativity and general relativity ).