Re: The electromagnetic paradox and our new space-time.

"Bill Hobba" <rubbish@xxxxxxxx> wrote in message
news:7yBHe.69418$oJ.62074@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx
|
| "FrediFizzx" <fredifizzx@xxxxxxxxxxx> wrote in message
| news:3l5fkjF112006U1@xxxxxxxxxxxxxxxxx
| > "Bill Hobba" <bhobba@xxxxxxxxxxxxxx> wrote in message
| > news:xYdHe.68189$oJ.52659@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx
| > |
| > | "Rolf Guthmann" <rolfguthmann@xxxxxxxxxx> wrote in message
| > | news:1122662663.260555.61500@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
| >
| > [snip]
| > | > In Chapter 8, we saw that gravity originates in atoms, in the
| > asymmetry
| > | > imposed by space-time on the Coulomb forces.
| > |
| > | Purely for the benefit of those that may be reading this and to
ensure
| > they
| > | understand that silliness such as the above can be refuted it is
very
| > well
| > | known EM is desribed classically by a 4 vector and gravity by a
| > tensor - so
| > | Coulomb forces can never explain gravity.
| >
| > Hmm... I wonder what F_uv = A_v;u - A_u;v is if not a tensor?
Seems
| > that we can take it to be generally covariant.]
|
| Freddy Fuv depends on Au, a 4 vector, in the same way as the Riemann
| curvature scalar depends on Guv a tensor - not the other way around.
The
| above is just the most general reason I can think of for gravity not
to be
| EM - al sorts of reasons abound eg faraday cages screen EM but not
gravity.

I wonder what happens if we take two equally charged objects and put one
in a faraday cage. If you try to move them together and they still
repel doesn't it seem like space-time is highly curved wrt charges? And
the cage ain't screening jack is it? That experiment smells a bit like
the opposite of gravity.

FrediFizzx

.

Relevant Pages

  • Re: The electromagnetic paradox and our new space-time.
    ... > | above is just the most general reason I can think of for gravity not ... > | EM - al sorts of reasons abound eg faraday cages screen EM but not ... > repel doesn't it seem like space-time is highly curved wrt charges? ... The screening is outside the cage - gravity is not affected. ...
    (sci.physics.relativity)
  • Re: The electromagnetic paradox and our new space-time.
    ... Bill Hobba wrote: ... > above is just the most general reason I can think of for gravity not to be ... > EM - al sorts of reasons abound eg faraday cages screen EM but not gravity. ...
    (sci.physics.relativity)
  • Re: The electromagnetic paradox and our new space-time.
    ... > |> imposed by space-time on the Coulomb forces. ... > | Coulomb forces can never explain gravity. ... curvature scalar depends on Guv a tensor - not the other way around. ... above is just the most general reason I can think of for gravity not to be ...
    (sci.physics.relativity)