light contains photons,what gravity contains?

Answer 1

Gravitons (Still not Proved)

In physics, the graviton is a hypothetical elementary particle that mediates the force of gravity in the framework of quantum field theory. If it exists, the graviton must be massless (because the gravitational force has unlimited range) and must have a spin of 2 (because gravity is a second-rank tensor field).

Gravitons are postulated because of the great success of the quantum field theory (in particular, the Standard Model) at modeling the behavior of all other forces of nature with similar particles: electromagnetism with the photon, the strong interaction with the gluons, and the weak interaction with the W and Z bosons. In this framework, the gravitational interaction is mediated by gravitons, instead of being described in terms of curved spacetime like in general relativity. In the classical limit, both approaches give identical results, including Newton's law of gravitation.

However, attempts to extend the Standard Model with gravitons run into serious theoretical difficulties at high energies (processes with energies close or above the Planck scale) because of infinities arising due to quantum effects (in technical terms, gravitation is nonrenormalizable.) Some proposed theories of quantum gravity (in particular, string theory) address this issue. In string theory, gravitons (as well as the other particles) are states of strings rather than point particles, and then the infinities do not appear, while the low-energy behavior can still be approximated by a quantum field theory of point particles. In that case, the description in terms of gravitons serves as a low-energy effective theory.

Since gravity is very weak, there is little hope of detecting single gravitons experimentally in the foreseeable future.

Answer 2

Physicists are searching for gravitons. Einstein theorized that gravity was a warping of space time, and predicted that light would curve near a star, and this has been observed.
So there may not be gravitons.
The four basic physical forces are: strong force, weak force, electro-magnetic force, and gravity, in order of strength. Gravity much the weakest. Gravitons, if they existed, would help with a Unified Field Theory, seeking to unite all the forces into a single explanation. See: Maxwell's Field Equations.
So far this has been elusive.

Answer 3

known relativity defined, in a consistent way, how gravity impacts mild. We now recognize that at the same time as photons do not have any mass, they do own momentum. We also knew that photons are afflicted by technique of gravitational fields no longer because photons have mass, yet because gravitational fields (particularly, sturdy gravitational fields) substitute the type of area-time. The photons are responding to the curvature in area-time, in a roundabout thanks to the gravitational field. Now, being scientists, we do not merely settle for theories like known relativity or conclusions like photons do not have any mass. We consistently try them, attempting to definitively coach or disprove. to this point, known relativity has withstood each and every try. and attempt as we may, we may be able to degree no mass for the photon. we may be able to easily positioned top limits on what mass it ought to have. those top limits are determined by technique of the sensitivity of the try we are making use of to target to "weigh the photon". The very last huge style I pronounced develop into that a photon, if it has any mass in any respect, could be below 4 x 10-40 8 grams. For evaluation, the electron has a mass of 9 x 10-28 grams. cbirch rather? no longer controversial? :oP

Answer 4

Gravitational force is transmitted through the Higgs boson, which has never been generated in a particle accelerator and has therefore never been directly observed. Physicists are hoping the Large Hadron Collider at CERN will be powerful enough to accomplish this.

Answer 5

There is no proof yet as to what gravity is fundamentally. There are more than one representation that solve the equsions, one is a partcle called a graviton, another is warping of space by matter (Einstien's).

Answer 6

Light is electromagnetic,made up of photons.
Gravity is sometimes referred to as gravitons but so far we have been unable to show that gravity is electromagnetic.

Answer 7

ah, light is energy, gravity is force.

anyways, it is postulated [not proven] that gravity may be comprised of gravitons.

Answer 8

That's till a mystery at best

Answer 9

GRAVITY CONTAIN FORCE.

Answer 10

gravitons