Re: Jackson Question


Edward Green wrote:
Sue... wrote:
Edward Green wrote:
Sue... wrote:

<<A Lorentz transformation or any other coordinate
transformation will convert electric or magnetic
fields into mixtures of electric and magnetic fields,
but no transformation mixes them with the
gravitational field. >>
http://www.aip.org/pt/vol-58/iss-11/p31.html

The links you post are invariably interesting, but none, so far as I
can see, are remotely near addressing the question that was asked.

That is because you seldom bother to learn the physics
that motivates the development of any particular maths
discpline.

That's a pretty bold statement, considering how little you know about
me. A little bizarre.

To be critical about how formalism represents phenomena,
you need several several points of view. Not just rote
manipulation of symbols.

Fine mom and apple pie sentiment. Now, the question involved some
aspects of tensorial definition and manipulation in reference to
multipoles, if I understand it correctly.

You understand only a piece of it then.


Just to give a "different
point of view", you cite an essay by Steven Weinberg on Einstein's
errors (should I euphemize that phrase?), discussing, among other
things, the cosmological constant, attempts to generalize GR to handle
other forces, and well known dissensions regarding quantum mechanics.
The quote included related to an attempt on the second front.

Suggesting that the answer will be found there is like fielding a
question on real estate law by handing the person an article on legal
philosophy, and suggesting he may be able to work things out on general
principles -- but here's a hint.

You share memetic genes with Al Schwartz. You cite material which may
be vaguely related to the question -- in so much as tree shrews bear
some relation to amoebas -- and imply that the clever reader will be
able to follow your profound lead. You're like Al without the social
rants and insults, or Jeff Relf plus citations.

Still, you pick excellent irrelevant essays.

If you don't like my references then try Timo's:
M.E. Rose, Elementary theory of angular momentum, Dover, gives a
reasonably thorough coverage of irreducible tensors and their point.

I have no doubt it too will still say:

<<A Lorentz transformation or any other coordinate
transformation will convert electric or magnetic
fields into mixtures of electric and magnetic fields,
but no transformation mixes them with the
gravitational field. >>
http://www.aip.org/pt/vol-58/iss-11/p31.html

Sue...

.

Relevant Pages

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