**Gravitational Energy**

Since in a vacuum region, it might seem that according to general relativity, vacuum regions must contain no energy. But the gravitational field can do work, so we must expect the gravitational field itself to possess energy, and it does. However, determining the precise location of this gravitational field energy is technically problematical in general relativity, by its very nature of the clean separation into a universal gravitational interaction and "all the rest".

The fact that the gravitational field itself possesses energy yields a way to understand the nonlinearity of the Einstein field equation: this gravitational field energy itself produces more gravity. This means that the gravitational field outside the Sun is a bit *stronger* according to general relativity than it is according to Newton's theory.

Read more about this topic: Vacuum Solution (general Relativity)

### Other articles related to "gravitational energy, energy, gravitational":

**Gravitational Energy**

... This is not caused by nuclear reactions but by the conversion of

**gravitational energy**to thermal kinetic

**energy**... distance from the centre of the contracting fragment this will result in a decrease in its

**gravitational energy**... The total

**energy**of the particle must remain constant so the reduction in

**gravitational energy**must be accompanied by an increase in the particle's kinetic ...

**Gravitational Energy**- General Relativity

... In general relativity

**gravitational energy**is extremely complex, and there is no single agreed upon definition of the concept ... is sometimes modeled via the Landau-Lifshitz pseudotensor which allows the

**energy**-momentum conservation laws of classical mechanics to be retained ... Addition of the matter stress-

**energy**-momentum tensor to the Landau-Lifshitz pseudotensor results in a combined matter plus

**gravitational energy**pseudotensor which has a vanishing 4-divergence in all ...

**Gravitational Energy**Is Negative?

... with all potential energies, only differences in

**gravitational**potential

**energy**matter for most physical purposes, and the choice of zero point is arbitrary ... The choice of at infinity may seem peculiar, and the consequence that

**gravitational energy**is always negative may seem counterintuitive, but this choice allows

**gravitational**... The singularity at in the formula for

**gravitational**potential

**energy**means that the only other apparently reasonable alternative choice of convention, with for, would result in ...

### Famous quotes containing the word energy:

“I rather think the cinema will die. Look at the *energy* being exerted to revive it—yesterday it was color, today three dimensions. I don’t give it forty years more. Witness the decline of conversation. Only the Irish have remained incomparable conversationalists, maybe because technical progress has passed them by.”

—Orson Welles (1915–1984)