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Physics
Special and General Relativity
Gravity Waves or Gravity Delay: Exploring Both
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[QUOTE="CHOP, post: 6153881, member: 659189"] Right, there is no measurement because there is no changing. Which was key to my curiosity: The fact that there is no changing shouldn't be what determines [I]whether[/I] the propagation occurs. Right? I understand that there is 'no topic' if there is no changing (nothing to measure). But IF it is thought that something propagated to make the Earth respond in some specific way, and IF what was propagated was a result of where the two black holes were in their orbit, then: (imagining they [I]stayed[/I] for a length of time to where they were at that point in their orbit) the thing that was propagated would be propagated for a longer time. That longer time would correspond to Earth responding for a longer time. Is that right? If right, then: We can consider a chunk of the time that the Earth was responding to that propagated thing (not the whole time). That chunk of time (presumably) corresponds to a chunk of what was propagated (not all of it). But it appears that something breaks down here. I mean, how can we say that chunk propagated? There is nothing 'surrounding' it to make it 'arrive' then 'depart' (nothing to measure). I think that was your point? Well, if it was, I agree. But my question is: Does the fact that we can't measure it [I]make it be[/I] a fact that that it didn't propagate? If so, then in what sense did the 'wave' [I]really[/I] propagate? It seems that it's more about delay (time), than about propagation. But (perhaps) the way it works is, the delay depends on the separation amount, so it can be [I]thought[/I] of as a propagation. [/QUOTE]
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Physics
Special and General Relativity
Gravity Waves or Gravity Delay: Exploring Both
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