**General Relativity**

In general relativity the gravitational field is determined by solving the Einstein field equations,

Here **T** is the stress–energy tensor, **G** is the Einstein tensor, and *c* is the speed of light,

These equations are dependent on the distribution of matter and energy in a region of space, unlike Newtonian gravity, which is dependent only on the distribution of matter. The fields themselves in general relativity represent the curvature of spacetime. General relativity states that being in a region of curved space is equivalent to accelerating up the gradient of the field. By Newton's second law, this will cause an object to experience a fictitious force if it is held still with respect to the field. This is why a person will feel himself pulled down by the force of gravity while standing still on the Earth's surface. In general the gravitational fields predicted by general relativity differ in their effects only slightly from those predicted by classical mechanics, but there are a number of easily verifiable differences, one of the most well known being the bending of light in such fields.

Read more about this topic: Gravitational Field

### Other articles related to "general relativity, relativity, general":

... physicist known for his contributions to

**general relativity**... In the context of

**general relativity**, he is best known for his development (with Richard Arnowitt and Charles Misner) of the ADM formalism, roughly speaking a way ... globally quantities like energy or, equivalently, mass (so-called ADM mass/energy) which, in

**general relativity**, is not trivial at all ...

**General Relativity**- Current Status

...

**General relativity**has emerged as a highly successful model of gravitation and cosmology, which has so far passed many unambiguous observational and experimental tests ... Even taken as is,

**general relativity**is rich with possibilities for further exploration ... More than ninety years after its publication,

**general relativity**remains a highly active area of research ...

... This is "special

**relativity**" as usually understood ... This is non-gravitational physics plus

**general**covariance ... This is the sense in which "special

**relativity**" can handle accelerated frames ...

**General Relativity**and Quantum Mechanics

...

**General relativity**typically deals with situations involving large mass objects in fairly large regions of spacetime whereas quantum mechanics is ... with their congruence is that, at Planck scale (a fundamental small unit of length) lengths,

**general relativity**predicts a smooth, flowing surface, while quantum mechanics predicts a random, warped surface ...

... There are solutions of the field equations of

**general relativity**which describe "warp drives" (such as the Alcubierre metric) and stable, traversable ... for some configuration of the stress–energy tensor field (see exact solutions in

**general relativity**) ...

**General relativity**does not constrain the geometry of spacetime unless outside constraints are placed on the stress–energy tensor ...

### Famous quotes containing the words relativity and/or general:

“By an application of the theory of *relativity* to the taste of readers, to-day in Germany I am called a German man of science, and in England I am represented as a Swiss Jew. If I come to be regarded as a bête noire the descriptions will be reversed, and I shall become a Swiss Jew for the Germans and a German man of science for the English!”

—Albert Einstein (1879–1955)

“The *general* will is always right.”

—Jean-Jacques Rousseau (1712–1778)