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Re: EM in warped space

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Tom Roberts wrote:

> On 8/3/15 8/3/15   3:10 PM, RichD wrote:
>> I wonder, what happens to the Maxwell eqs., and the solutions, in a
>> high gravity gradient, in GR?
> 
> Here are Maxwell's equations in flat spacetime, written in the language
> of differential forms:
> 	dF = 0 *d*F = J
> Here d is the exterior derivative, * is the Hodge dual operator, F is
> the Maxwell 2-form, and J is the current 1-form. In terms of the
> electromagnetic potential 1-form A:
> 	F = dA
> 
> 
> Here are the corresponding Einstein-Maxwell equations in curved
> spacetime such that the energy density of the EM fields is negligible
> (compared to other mass/energy that determines the geometry):
> 	dF = 0 *d*F = J
> Yes, they are the same, including the meanings of all the symbols.

No, they are not the same. The former was Maxwell, the later Einstein is 
added to it: Einstein-Maxwell.
 

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EM in warped space RichD <r_delaney2001@yahoo.com> - 2015-08-03 13:10 -0700
  Re: EM in warped space John Heath <heathjohn2@gmail.com> - 2015-08-03 15:25 -0700
    Re: EM in warped space John Heath <heathjohn2@gmail.com> - 2015-08-03 15:36 -0700
  Re: EM in warped space Tom Roberts <tjroberts137@sbcglobal.net> - 2015-08-03 20:18 -0500
    Re: EM in warped space Bohuš Matuška <bohu@paranetnet.net> - 2015-08-04 15:50 +0000

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