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#401 |
Muse
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#402 |
Muse
Join Date: Sep 2018
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I give you a chance to give up before your GR nonsense buries your credibility that is pretty bad already...
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#403 |
Penultimate Amazing
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11 December 2019 philippeb8: His persistent ignorance about frames of reference.
Every observer has their own frame of reference with the coordinate system they select, etc. They can not be "summed over". That would be as stupid as taking every possible map of the Earth and summing them. There would be places that would be ocean + mountains + desert + lake + etc. : ![]() Charts, atlases, and transition maps in differentiable manifolds. |
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NASA Finds Direct Proof of Dark Matter (another observation) (and Abell 520) Electric comets still do not exist! |
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#404 |
Penultimate Amazing
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#405 |
Muse
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#406 |
Penultimate Amazing
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11 December 2019 philippeb8: "give up before your GR nonsense buries your credibility that is pretty bad already" stupidity.
I have been stating and citing textbook GR with sources. Go ahead, philippeb8. Give your scientific sources that show what I have been posting about GR is wrong. |
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#407 |
Muse
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#408 |
Muse
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#409 |
Penultimate Amazing
Join Date: Apr 2004
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Well obv.
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But even if you decide to choose a spinning reference frame for this thought experiment, for whatever reasons, there is still linear acceleration. As long as there are forces there is also acceleration. So we simplify the thought experiment to have a universe with only two particles in it. There is also an attractive force between them then each particle will have an acceleration in the direction of the other particle. ![]() Then suppose each particle has an initial velocity normal to the direction of the force but in opposite direction: ![]() Then the particles still have an acceleration in the direction of the force and consequently the direction of the velocity of each particle will be turned a little. ![]() Now your idea, as I understand it, is that there is some sort of objectively existing reference frame which would detect the movement of these particles and would alter its basis vectors so that the particles are in their original position, do I have that right? But the point is that even if there was such a thing as an objectively existing reference frame, it would make no difference. A change of frame is simply a co-ordinate transform, it would not affect the dynamics of the system. As I pointed out you can take any of my animations, run it on your phone and then rotate your phone in the opposite direction so that the particles remain more or less in the same place. That is exactly the same as choosing a spinning reference frame. But I ask, how have you changed the facts of my model by rotating your phone screen? |
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#410 |
Penultimate Amazing
Join Date: Mar 2008
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11 December 2019 philippeb8: Abysmal "Well it’s new mathematics then" ignorance.
Someone with a delusion of replacing 300 years of physics needs to learn the basics of physics, including its history. This is mathematics that has been around for well over a century and a half. GR uses a pseudo-Riemann manifold. Bernhard Riemann (17 September 1826 – 20 July 1866). GR was published 104 years ago! |
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#411 |
Penultimate Amazing
Join Date: Mar 2008
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Gibberish - my posts are that all he has is an ignorant fantasy about gravitons
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#412 |
Penultimate Amazing
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#413 |
Penultimate Amazing
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#414 |
Illuminator
Join Date: Nov 2014
Posts: 4,001
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Thanks W.D.Clinger.
My bad. I was trying to use philippeb8's own meaning of "reference frame"; obviously I didn't make that clear. Here are some examples of how he uses that term (there are plenty more): post #12: "In other words the star cannot eject fire because the reference frame spins with the star." post #23: "No you can't because there is nothing to relate it to." (in reponse to RC: "We can assign any spin that we want to a hypothetical star. ") post #25: "That's exactly what I said: the star defines the reference frame." post #35: "The universe is empty so the star itself defines the frame of reference. If you have a black whole [sic] next to the star then the black hole will define the frame of reference... and so on." post #38: "Masses all have their own reference frame but their importance is proportional to their mass amplitude. Just like what I was saying in the thought experiment." It is, obviously, very likely that I did not, and do not, understand what he means by "reference frame".
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#415 |
Penultimate Amazing
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11 December 2019 philippeb8: More lies and ignorance about GR.
He has not "just posted" any articles. He lies that a science article would say "the expansion of the universe don’t fit GR" because GR only says the universe can be expanding, contracting or static. His repeated lie that we do not know where dark energy comes from. The question of energy conservation in GR is complex. GR conserves energy locally. Globally GR conserves the combination of energy and momentum.Is Energy Conserved in General Relativity?
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#416 |
Penultimate Amazing
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6 December 2019 philippeb8: What does your "Kinematical Time Dilation" predict for the Frisch-Smith experiment [for time dilation]?
8 December 2019 philippeb8: What does your "Kinematical Time Dilation" predict for the Hafele–Keating experiments (SR time dilation measured for travelling atomic clocks)? 10 December 2019 philippeb8: What is your prediction for the time dilation of GPS atomic clocks due to the GPS satellite velocity and different gravitational potential (SR and GR predict the observed values). 10 December 2019 philippeb8: Give your derivation of this exact solution for perihelion precession and its match to the observed value(s) Answering the last question is important because his OP links to an blatantly wrong "Perihelion Precession" which is a nonsensical for precession "Veff" equation. There are several posts claiming an FT "exact solution for perihelion precession" that so far does not exist. Later in the CQ thread he changes "Perihelion Precession" to "effective gravitational potential" and links to a paper by someone else! The biologist Randy Wayne published "Explanation of the Perihelion Motion of Mercury in Terms of a Velocity-Dependent Correction to Newton’s Law of Gravitation". By itself this is reasonable. But a reason that modifying Newton’s Law of Gravitation was considered and rejected was that it made all orbits unstable. Perhaps this has the same flaw. |
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#417 |
Muse
Join Date: Sep 2018
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Here’s a good example of a rotating reference frame: https://en.m.wikipedia.org/wiki/Absolute_rotation No linear acceleration is involved there. |
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#418 |
Muse
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#419 |
Muse
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#420 |
Penultimate Amazing
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11 December 2019 philippeb8: "good example of a rotating reference frame" ignorance
Absolute rotation
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#421 |
Illuminator
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#422 |
Muse
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#424 |
Illuminator
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#425 |
Muse
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#426 |
Muse
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#427 |
Illuminator
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(My highlighting.)
A century ago, the branch of mathematics that is now known as differential geometry was known to Einstein as absolute differential calculus. That branch of mathematics can be traced all the way back to Carl Gauss's Theorema Egregium of 1821, and was more fully developed by Gauss's student Bernhard Riemann, whose research on this subject was published in 1868. Riemannian geometry deals with Riemannian manifolds, which are locally Euclidean. Einstein formulated his general theory of relativity using pseudo-Riemannian manifolds, for which the metric tensor need not be positive definite, thus allowing a locally Lorentzian metric. tl;dr: As if further confirmation of philippeb8's ignorance of relativity were needed, philippeb8 didn't even recognize the branch of mathematics that must be understood before it is possible even to read Einstein's fundamental field equations for general relativity. |
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#428 |
Illuminator
Join Date: Nov 2014
Posts: 4,001
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Huh?
![]() I thought this thread was supposed to be about some new "milestone in physics", developed by you. There are, indeed, some posts by you on that (or so it would seem). However, they are, AFAICS, so vague as to be meaningless (in terms of physics; they might be good magic or fiction). When do you intend to start presenting the so-called "milestone in physics"? |
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#429 |
Penultimate Amazing
Join Date: May 2005
Location: Sydney Nova Scotia
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Caption from and old New Yorker cartoon - Why am I shouting? Because I'm wrong!" |
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#430 |
Penultimate Amazing
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11 December 2019 philippeb8: Emphasizes his "not corresponding to the predictions of GR" lie again.
Once again, GR does not predict that the universe must expand at a certain rate or that the expansion must accelerate. It is the application of GR to data which shows that. He links to a "futurism" web site with an article about a team of scientists writing about the accelerated expansion of the universe. The 2016 paper is Marginal evidence for cosmic acceleration from Type Ia supernovae and its actual conclusion (and flaws!) are well documented. No, Astronomers Haven't Decided Dark Energy Is Nonexistent
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#431 |
Muse
Join Date: Sep 2018
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The frames of reference is not detecting the particles, the frames of reference are emitted by each particle. Suppose the particles are always facing each other, in an empty universe they will crash on each other following a straight line and not rotate around each other because the sum of the 2 frames of reference is a bigger rotating grid encompassing the 2 particles. I think I’ll have to create some animation to better explain this. |
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#432 |
Penultimate Amazing
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#433 |
Penultimate Amazing
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11 December 2019 philippeb8: Ignorant delusion about frames of reference being emitted by particles.
Highlighted where anyone can read what a frame of reference is. He cannot use a "frame of reference" in his fantasies because that has a scientific definition. Maybe use a "philippeb-thingy"? |
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#434 |
Muse
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#435 |
Illuminator
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#436 |
Penultimate Amazing
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11 December 2019 philippeb8: A "people do not understand the multiple rotating frames of reference" lie.
We understand real rotating frames of reference that exist in physics textbook that have a scientific definition. He has an ignorant fantasy about rotating bodies emitting a rotating thing that he labels as "frames of reference" when they are not actual frames of reference. Ditto for particles emitting his things. |
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#437 |
Muse
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#438 |
Penultimate Amazing
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How does a particle "emit" a frame of reference?
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Or is this some new mathematics which you have devised? |
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#439 |
Muse
Join Date: Sep 2018
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Particles emit gravitons which creates a field around the particles which has the same spin. It looks to be some new mathematics because we need to weight the influence of each frame of reference like I did for the conversation on the ISS and the influence of the Earth vs the influence of the Sun. |
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#440 |
Illuminator
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