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Talk:Counterexamples to Relativity (view source)
Revision as of 03:47, August 21, 2011
, 03:47, August 21, 2011→Solenoid example: new section
::::: ''''<math>H_{\mu\nu}=-8\pi T_{\mu\nu}</math>, where <math>H_{\mu\nu}</math> is what I call "Hubble tensor""''
::::: ''''<math>H_{\mu\nu}=-8\pi T_{\mu\nu}</math>, where <math>H_{\mu\nu}</math> is what I call "Hubble tensor""''
::::: It's mentioned [[Einsteinian_gravitation#Step_8._Flatness_of_spacetime|here]] that the the "Hubble tensor" is anti-symmetric. If so, this equation doesn't make sense since the stress-energy tensor, <math>T_{\mu\nu}</math>, is symmetric. The only way for the above equation to hold is if the "Hubble Tensor" and the stress-energy tensor are both zero ( <math>H_{\mu\nu}=-8\pi T_{\mu\nu} = -8\pi T_{\nu\mu}= H_{\nu\mu} = - H_{\mu\nu}</math> and <math>H_{\mu\nu} = - H_{\mu\nu} \Rightarrow H_{\mu\nu} = 0</math>). Actually, since in the linked article the "Hubble Tensor" is defined as the antisymmetric part of Ricci tensor it is exactly zero. --[[User:MatthewQ|MatthewQ]] 19:44, 20 August 2011 (EDT)
::::: It's mentioned [[Einsteinian_gravitation#Step_8._Flatness_of_spacetime|here]] that the the "Hubble tensor" is anti-symmetric. If so, this equation doesn't make sense since the stress-energy tensor, <math>T_{\mu\nu}</math>, is symmetric. The only way for the above equation to hold is if the "Hubble Tensor" and the stress-energy tensor are both zero ( <math>H_{\mu\nu}=-8\pi T_{\mu\nu} = -8\pi T_{\nu\mu}= H_{\nu\mu} = - H_{\mu\nu}</math> and <math>H_{\mu\nu} = - H_{\mu\nu} \Rightarrow H_{\mu\nu} = 0</math>). Actually, since in the linked article the "Hubble Tensor" is defined as the antisymmetric part of Ricci tensor it is exactly zero. --[[User:MatthewQ|MatthewQ]] 19:44, 20 August 2011 (EDT)
== Solenoid example ==
First of all, the reference is to a post on a forum. This doesn't seem like a reliable source.
Second, the poster presupposes a magnet going the speed of light. As mentioned in the forum, this violates relativity right off the back. You cannot presume relativity is false and then go to conclude relativity is false. That's circular reasoning. --[[User:MatthewQ|MatthewQ]] 23:47, 20 August 2011 (EDT)