0 Members and 1 Guest are viewing this topic.
So it stands to reason that a very large amount of energy can be converted to mass, is there anywhere in nature that this happens?
Einstein\'s theory of general relativity says that G_uv=-8(pi)T_uv. There is a way to formulate T_uv with respect to the electromagnetic field tensor F_uv=a_u,v-a_v,u where a is the electromagnetic potential. This would mean that energy actually creates a gravitational effect just like it\'s mass equivalent.
My speculation is that we can eliminate the middle man. Since matter is mostly energy, why not investigate whether it is the energy content of matter that is totally responsible for gravity. A consistent theory of gravity is possible within that concept.
I agree that energy is affected by gravity, but does energy have gravity, you state it does, where are you getting your information from?
Quote from: Tony_82 on 08/11/2009 19:59:54I agree that energy is affected by gravity, but does energy have gravity, you state it does, where are you getting your information from? Photons have an acceleration aspect to them, so that they curve space and time as they move through the vacuum. This curvature is a generated gravitational field, this is why it can couple to other curvatures.
http://en.wikipedia.org/wiki/Photon [nofollow]''Conversely, photons are themselves affected by gravity; their normally straight trajectories may be bent by warped spacetime,''-- operative words: bent by warped spacetime and effected by gravityhttp://en.wikipedia.org/wiki/Gravitational_lensing [nofollow]''According to general relativity, mass "warps" space-time to create gravitational fields and therefore bend light as a result.''---Operative words: to create gravitational fields and therefore bend lightPhotons do have a momentum through spacetime given as E^2=p^2c^2+M^2c^2, and therefore as a result, curves spacetime as it moves through spacetime and so creating its own gravitational field. Energy alone is enough to cause curvature (or distortions in spacetime) and so gravitational masses are not unique in this sense. Gravitationally-radiating bodies and bodies which cause spacetime gravitational field all cause distortions in spacetime.
what is the sun but pure gamma energy? Is this body not capable of causing curvature around it? All rhetorical questions, but the point you are missing is that curvature is actually the same thing as a gravitational field.Realize your mistake now?
Quote from: Mr. Scientist on 09/11/2009 18:22:49what is the sun but pure gamma energy? Is this body not capable of causing curvature around it? All rhetorical questions, but the point you are missing is that curvature is actually the same thing as a gravitational field.Realize your mistake now?"but the point you are missing is that curvature is actually the same thing as a gravitational field. Realize your mistake now?"No, really, is it, never, thanks for pointing that out. "All rhetorical questions"No, don't worry about it, I will answer your questions,"what is the sun but pure gamma energy? No, I think, about three-fourths of the Sun's mass consists of hydrogen, most of the rest is helium. Less than 2% consists of other elements, including iron, oxygen, carbon, neon, and others."Is this body not capable of causing curvature around it?"I never stated the sun has no gravity.
EVEN a single quantum photon is a distortion of spacetime. And when i was talking about pur gamma energy, i was referring to light being generated in general, is still part of the suns makeup. Mass is not special when curvature is involved. Energy can also casue curvature, thus solidifying the arguement that photon generates its own gravitational field as it inexorably moves through the vacuum. It's not due to mass, but energy with momentum in general.
The notion that a photon produces a gravitational field is part of Einstein's General theory of relativity. All theories of nature contain the notion; it is necessary for consistency. When you equate mass to energy, you must equate the whole of it. E = mc2 does not allow you to somehow separate gravity from the m in the equation.Now, you can continue to be sceptical; there is no experimental proof that I know about; but the maths work so well that we usually accept it. You would need some powerful experimental evidence to refute the notion that photons produce gravity. []