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**truck** · 06-12-2009, 02:54 AM

Einstein believed it was possible, and i am sure the scientists know, as they have probably attempted it, but won't admit. I know a few people I would like to send back to the stone age. I have to say that is one huge machine!

Not really. Einstein disproved it himself with his general theory of relativity. This can be compared with the vector equation of euclidic space:

Where R is the Ricci curvature scalar, Rμν is the Ricci tensor, gμν is the metrical tensor, Λ is the cosmological constant, c the speed of light, G the gravitational constant and Rμν is the Energy Impulse tensor. Now all tensors of this equation are symmetrical, that is Rµv is equal to Rvµ.

Therefore the solutions of the equation is not superpositionable, since the field equations of the GTR are non-linear. As opposed to the non-Euclidic 4th dimension (time) which is linear, and in which everything is travelling into one direction (i.e. no change in position in the 5th dimension - spacetime) at a constant speed. So one can't go back through time since it is non-Euclidic and the direction in spacetime cannot be changed.

(Sorry for the technobabble but this was the simplest I could go)

06-12-2009, 02:54 AM	#3
truck Join Date Oct 2005 Posts 451 Senior Member	Einstein believed it was possible, and i am sure the scientists know, as they have probably attempted it, but won't admit. I know a few people I would like to send back to the stone age. I have to say that is one huge machine! Not really. Einstein disproved it himself with his general theory of relativity. This can be compared with the vector equation of euclidic space: Where R is the Ricci curvature scalar, Rμν is the Ricci tensor, gμν is the metrical tensor, Λ is the cosmological constant, c the speed of light, G the gravitational constant and Rμν is the Energy Impulse tensor. Now all tensors of this equation are symmetrical, that is Rµv is equal to Rvµ. Therefore the solutions of the equation is not superpositionable, since the field equations of the GTR are non-linear. As opposed to the non-Euclidic 4th dimension (time) which is linear, and in which everything is travelling into one direction (i.e. no change in position in the 5th dimension - spacetime) at a constant speed. So one can't go back through time since it is non-Euclidic and the direction in spacetime cannot be changed. (Sorry for the technobabble but this was the simplest I could go)
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