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| Jarek Duda... |
 Posted: Thu Nov 05, 2009 9:03 pm |
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Guest
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Since Einstein we have started treating gravitation and
electromagnetism in completely different way.
There are also simpler ways to make gravitation Lorentz invariant -
for example it can be made by a second set of Maxwell-like equations
for gravity - with mass density instead of charge density and
correspondingly for current density - getting something like Amper's
law for gravitation required for Lorentz invariance. To make it always
attracting, it would be enough to change the sign in formula for
potential
(5th section of http://arxiv.org/abs/0910.2724 ).
Why can we be sure that these interaction are so qualitatively
different - that for electromagnetism it's enough to use Maxwell's
equations, while gravitation requires intrinsic curvature of
spacetime? |
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