Re: GR ?


"Significant Zero" <paulpsremove@xxxxxxxxxx> wrote in message
news:1120901128.24485.0@xxxxxxxxxxxxxxxxxxxx
> Would anybody that understands GR dispute the statement that the geometry
of
> GR is non-Euclidean due deformation of length and duration under presence
> of mass and that this deformation has the aspect and equivalence to
energy?

If what you are trying to say is do gravitational fields have energy - then
I would say yes with caveats. Energy in GR is a rather slippery concept due
to the fact that energy is the conserved Noether charge related to time
symmetry of the lagrangian - it is rather difficult to define such when that
symmetry is lacking due to space-time curvature - see the FAQ -
http://math.ucr.edu/home/baez/physics/Relativity/GR/energy_gr.html

Bill

>
> --
> Significant Zero E-field = Electric field, M-field =Magnetic field, two
> unbound field effects
> http://home.freeuk.com/paulps/
> Maybe updates. The spuds, beans and onions are coming up nicely. Ooh
> ah.{:-)
>
>


.

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