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Old Nov 30th 2016, 11:01 AM   #1
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Question Warping of spacetime

I know that when spacetime bends in response to matter, the magnetic field lines push back and try to flatten spacetime. My question is, since spacetime naturally wants to be flat, isolated from electromagnetic fields and other forces, does spacetime itself resist being bent/warped? If so, what force is involved?
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Old Nov 30th 2016, 11:24 AM   #2
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Originally Posted by Snoke View Post
I know that when spacetime bends in response to matter, the magnetic field lines push back and try to flatten spacetime. My question is, since spacetime naturally wants to be flat, isolated from electromagnetic fields and other forces, does spacetime itself resist being bent/warped? If so, what force is involved?
I don't know that anyone has been able to really dig into this question. I know that theoretical research in the past 20(?) years has produced one or two ideas, but with no experiment possible to test it at this time.

The closest I can come is that recent theory using the fledgling field of Quantum Gravity says that space-time "vibrates" when gravitational waves pass by. But that isn't quite what you are asking about.

-Dan
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Old Nov 30th 2016, 11:40 AM   #3
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Thanks I might not be asking the right questions. What can the properties of space and time be described as? If we know that it vibrates does that make it a medium? Reminds me of the disproven theory of ether. Space and time are always referred to as being effected so in my simple understanding it seems that they too act upon these waves.
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Old Dec 2nd 2016, 05:48 PM   #4
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from what I just read this resistance to deformation doesn't occur unless in the presence of a magnetic field.
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