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Everything posted by MigL
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The attempt to change rules that don't make sense, or cause harm, is called 'progress', not anaarchy. Anarchy has no scales; it is the total disregard of rules. Disclaimer : Simply my opinion.
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Is expansion meaningless where it is not measurably happening?
MigL replied to md65536's topic in Relativity
My take on this, is that expansion is due to some effect like the Cosmological Constant, an 'add-on' to the EFE, such that gravity is 'modified' by it, and the two are linked. It acts like a 'step' potential such that when gravity ( the terms other than the CC ) exceed that 'step', at close distances, gravity prevails. If gravity (terms other than the CC ) is below the 'step', at large distances,then expansion prevails. -
Mostly because a valid frame of reference for a photon ( emission/ absorption ) does not exist. Much like non-locality involving superluminal communication/interaction.
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Perhaps I can quote Markus, from another thread, which, although dealing with quantum gravity, seems very appropriate for quantum systems in general "I completely agree, especially since we already know that our usual paradigms donโt work for this. In particular, I suspect that any notions of smooth and regular space, time, spacetime with well-defined causal structures, and fields on spacetime will become meaningless in the realm of quantum gravity. Physics there will deal with dynamical quantities that are very different from those of ordinary classical physics, or even those of quantum physics, which will likely change the way we think about reality in very fundamental ways." Note, in particular, the bolded part. Quantum systems play 'fast and loose' with causal structures, simply because they are probabilistic.
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It would burn quite a bit ( Halogenated phosphonium salt solution ), but Mr D Trump is recommending its use.
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Action and reaction implies causality, which implies information transfer. Which is impossible. Correlations, OTOH, have no such limitations. Your definition is a non-starter. Maybe we need to define 'action/reaction' and 'correlation' as well, as we seem to be confusing their meanings/implications.
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IF they were; alas, they are not. A quadrupole stretching/compacting effect perpendicular to the direction of travel further described here Gravitational wave - Wikipedia
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That would be sweeeet ...
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This runs into the same problem as "the universe is not expanding; everything in it is getting smaller". The fact is, the universe is only expanding at certain scales; below those scales, galaxies may actually be coming together, such as our galaxy and Andromeda, because the gravitational coupling exceeds the 'dark energy' of the expansion. IOW, expansion is distance ( scale ) dependent.
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Sorry Studiot, commenting would be a conflict of interest. I make a product that is used to 'sterilize' the water that is used for fracking injection.
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Guilty as charged, Eise. I am often confused by terminology, and while I see a definite difference between 'non-local' and 'global', their polar opposite is 'local' in both cases.
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Partial mobilization only, and the protests have started. Soon he'll have more problems at home than in the Ukraine.
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Time dilation or a change of frequency ?
MigL replied to Ned's topic in Modern and Theoretical Physics
So, if I draw a picture where the two timelines are unequal, that will be proof that there is time dilation ??? If it wasn't so sad, I'd be laughing. One can only hope ... -
Time dilation or a change of frequency ?
MigL replied to Ned's topic in Modern and Theoretical Physics
Pictures and diagrams are not proofs ... Post something that makes sense, back it up with evidence, or go play in another sandbox. -
Darkness does exist. Not sure about your thinking.
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Is it really anarchism if you try to implement change within an existing framework of societal rules ? Do you consider voting, to change a government, in a democracy, an act of anarchy, Seth ? Most people consider anarchy as forcing change by disregard of all rules; myself included. Changes in society are less painful when they proceed according to rules.
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It appears, Bangstrom, that you still think quantum particles have an observable state, before they are actually observed. And that they need to communicate this state to their entangled partner. They don't. And they don't. Our model says they are, at best, a probability distribution. If you want to 'imagine' a different underlying 'reality', you need to come up with a different model.
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My defnition of 'anarchism' comes from Alfred Pennywirth ( M Caine ) in "The Dark Knight" ...
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Oh you Brits and your gin. When your neighbours make perfectly acceptable scotch ...
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Any 'state' defined by the wave function does not exist as what we would normally call 'real', before any collapse due to observation/interaction. The 'existence' is defined as a probability distribution ( a mathematical concept; is thet 'real' ? ) prior to collapse. Quantum mechanics is probabilistic in nature, not deterministic, like classical. Until you wrap your head around this paradigm shift in your ( Bangstrom's ) thinking, your understanding of QM will be mired in misconceptions. Well QED/QCD posit that these fields have always existed. ( but obviously at the earliest times, there had to be some 'evolution', as combined fields split to other fields through symmetry breaks ) These fields on fields is all that exists, and particles are quantum excitations of these fields, 'real' if exceeding a threshold value, and virtual, if below that threshold. A quantum field theory of gravity would have even space-time, the background 'stage' on which all other events take place, as a field ( currently in GR there is no background 'stage', it is already a geometric field ). LQG attempts to do just that. I recommend the pinned thread, "Matter is excitations in a field", in the Quantum Theory section of the Physics forum.
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You are the only one claiming that since there are no hidden variables, the only remaining choice is non-local communication/interaction. It is NOT just one or the other. We are saying that there is no communication/interaction, local or non-local, sub-luminal or super-luminal, real or imaginary; of any kind. It is not just a lack of undestanding on your part, but a ( willful ? ) mischaracterization of other's positions on the matter. And frankly, it's getting annoying.
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Perhaps he can give us an example of where this problem, of major consequences, actually arises ??? or is it simply an interesting geometric puzzle ?
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WE are not considering particles, which exist in isolation, and must have something travel from one to the other in order to have an effect on each other. That is a CLASSICAL viewpoint. The mathematical model we are using considers quantum particles as manifestations of their global QED fields. These fields are not local to the manifested particle. According to a 'subset' of this mathematical model, we can describe the evolution of this quantum particle with a wave equation, which, among other things will give an indication of the probability of finding this particle anywhere in the universe. IOW, the wave equation is also global. If we now consider two quantum particles, which we have managed to entangle, we can describe their behaviour with the same wave function. This wave function 'contains' the correlation; the particles themselves are not in a state of flux, switching back and forth between possible states, as Bangstrom would like to believe. They are actually undefined ! Upon collapsing the wave function, both particles assume their observed states, and the correlation is evident, just as would happen for a single particle wave function. The wave function, being a mathematical construct, collapses globally; there is no need for communication/interaction of any kind, sub-luminal or super-luminal. Bell has proven the lack of 'hidden variables', and Einstein, of all people, would turn over in his grave at the thought of 'non-local information transfer'.