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Mordred

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Everything posted by Mordred

  1. That's the general idea behind the scholastic background. It would give details much like we get with the CMB but closer to the inflationary and electroweak time periods. ( in theory). Yes I have read that one before it's a pretty decent article.
  2. The next several decades with all the equipment proposals to measure the GW wave schotastic should prove interesting. It may likely provide insights beyond the cosmological dark ages including frozen in signals due to inflationary process
  3. They look like back up folders of some kind though I could be wrong
  4. It certainly makes it a lot easier same rule applies with sanding wood for vanishing.
  5. One detail I should add stick to the same direction while grinding or polishing.
  6. My wife is a member of our local Pagan society. I will day I personally like their views. The members I have met tend to be more open minded to the beliefs of others. As for myself I don't particularly follow any form of faith, however that's just me. I do know the local membership has been steadily growing in my locality.
  7. Yes provided you use Maxwell Boltzmann statistics for mixed states or its QFT equivalent. http://arxiv.org/pdf/hep-th/0503203.pdf "Particle Physics and Inflationary Cosmology" by Andrei Linde http://www.wiese.itp.unibe.ch/lectures/universe.pdf:" Particle Physics of the Early universe" by Uwe-Jens Wiese Thermodynamics, Big bang Nucleosynthesis you can find further details in these two Introductory level articles. Both articles will provide an excellent overview of the major equations used in modern Cosmology.
  8. The answer to that will depend on if the conservation laws of thermodynamics applies to the Universe. Under the LCDM (BB) model the universe is treated as conserved and expansion under thermodynamics is treated as an isentropic and adiabatic expansion. In essence a closed system. So under the LCDM model of the BB the photons become redshifted the density decreases but the total number of photons remain constant. A neat trick results from this mathematically. One can estimate the blackbody temperature at any given value of Z by using the inverse of the scale factor
  9. Interesting thought experiment, I would like to think about this scenario a bit in terms of the stress energy momentum tensor and how it will correlate to the permutation tensor \(H_{ij}\). I will also have to dig into just how symmetric a supernova would be. The answer is yes regardless of how symmetric the core collapse occurs one other factor is that acceleration can also generate GW waves. Though a supernova collapse is never likely to stay symmetric. One simple reason being the typical bulge at the equator of rotation. That's not getting into details such temperature anistropies of the plasma etc. The Shockwaves themselves are sources of GW waves
  10. Not really considering the temperature at the same time is roughly 10^19 GeV which when you convert to Kelvin isn't far off Planck temperature. Using the Bose Einstein statistics that equates to roughly the equivalent to 10^90 photons squeezed into a single Planckian volume. Good luck finding anistropy distribution under those conditions. (Also a symmetric state as all particles are in thermal equilibrium).
  11. If it is its a good one, as a physical wavelength doesn't involve any probability so it's handy being able to readily distinguish between the two types of waveforms. (Physical vs probability). That honestly depends on the system being described for example the Earth due to rotation and Mountains (non uniform mass distribution) can generate GW waves. However the effect is incredibly miniscule. Any non symmetric spinning object can do so. However a symmetric sphere won't regardless of how fast it spins. In the case of inflation you get regions where the expansion rate may vary from other local regions. Though on a global average its roughly uniform. It is those local regions of non uniform expansion rates that can generate GW waves. At \(10^{-43}\) the universe would incredibly uniform in mass/energy density that no GW waves could result. Likely the earliest feasible GW waves would generate via electroweak symmetry breaking and inflation.
  12. One trend I have noticed is the term wavefunction tends to indicate probability functions but the term wavelength tends to refer to physical waves such as Compton and DeBroglie. Do not know if this has become a convention but as an avid reader of numerous physics theories its a trend I have noticed.
  13. We only examine our Observable universe. We can only conjecture based on what we learned from our Observable portion. However that Observable portion also equates to all forms of causality. That is a fundamental distinction. You agree that GR works great for describing what we can observe but that also applies to causality. In cosmology this defines the Cosmic event horizon aka our observable universe. GW waves have wavelengths that far exceed the size of our universe at the earliest stages ie inflation and prior. This has been calculated I recall Bardeen presented a solution for inflation giving the resulting wavelengths at \(10^3\) km for the quarterly wavelengths (needed detector length). Note that's well beyond the volume of the Observable universe at that time. We look for the frozen in effects (that is the literal descriptive oft given ) with regards to traces of relic dynamics due to inflation etc. However those traces are incredibly difficult to detect (relevant wavelengths including redshift due to expansion). I should add gravity waves only result from anisotropic conditions. That list includes mass/energy distribution. The EFE shows this. As you agreed it works well with observational evidence
  14. Not accepting my challenge? Proof yourself mathematically. This is physics derive a QW wave with its wavelength using the mass of the universe. Then run expansion backwards to \(10^{-43} \) seconds. Let me know if you can fit the wavelength inside the observable universe at that time. Go ahead prove me wrong. In order to have a wave you must have a measurable wavelength
  15. There is no assumption it is trivial to perform the calculations something you likely will not have for any of your declarations. You likely don't even know how spacetime via the Einstein field equations pertain mathematically to the GW wave. You cannot have GW waves without sufficient spacetime volume. Go ahead I challenge you to mathematically prove me wrong. Those mathematics is part of our rules and regulations when it comes to rigor and testability. Lol truth be told with your declarations above you likely have never bothered looking at the relevant mathematics of a QW wave. Those same mathematics involving Einsten field equations which you believe are wrong allowed us to predict the existence of GW waves long before we ever measured them.
  16. All particles have pointlike characteristics as well as wavelike that is what specifically is described by wave particle duality. In thermal equilibrium however all particles are indistinct from one another. In essence they all would have identical wavefunctions as well as pointlike properties. So you could have gravitons as well as the SM particles however you wouldn't be able to tell them apart. Keep in mind though it's feasible we still have no evidence of a graviton. Gravity is well described without it however via spacetime curvature.
  17. Might help to understand the BB theory starts at \(10^{-43} \) seconds. The theory describes how the Universe expands from that time forward. The theory does not state what created the universe. That is a common misconception. Expansion itself simply follows the thermodynamic laws. So there is nothing unusual there.
  18. Not even close. Not possible,the BB singularity if you run expansion backwards you would hit a volume roughly one Planck length at 10^-43 seconds. At this volume even curvature has no meaning nor does a GW wave. For that matter as there is no curvature term due to the miniscule volume you wouldn't even have gravity.
  19. with water droplets the light enters and leaves the droplet so refraction does apply https://phys.libretexts.org/Bookshelves/College_Physics/Book%3A_College_Physics_1e_(OpenStax)/25%3A_Geometric_Optics/25.05%3A_Dispersion_-_Rainbows_and_Prisms here obviously some light will simply reflect but you get refraction due to light entering and exiting the water droplets. Seriously if a water droplet were a perfect mirror then you would have 100 percent reflection. However a water droplet is semi transparent so naturally refraction will be involved. Anytime light enters a medium you apply refraction. With reflection its simply the surface or internal reflections in both cases Snell's law covers both. Angle of incident= outgoing angle for the reflected case \[\theta_i=\theta_O\] . with refraction obviously you have a much wider range. Quite frankly I can't think of any reason for color separation via reflection as opposed to refraction. I'm fairly positive your well aware of this though Studiot lol. Its still good info for other readers
  20. Snells law of refraction n1sinθ1=n2sinθ2 n_1 is the incident index, n_2 the refracted index, θ1 the incident angle, θ2 the refracted angle. you can get further details here https://www.cis.rit.edu/class/simg232/lab2-dispersion.pdf the article covers the phase velocities and how differences in phase velocities will change the index of refraction however some examples for visible light apply this to red, yellow, violet in regards to a prism such as here https://www.vedantu.com/question-answer/dispersive-power-of-the-prism-and-its-si-class-12-physics-cbse-60d1f94e2f7a4d284fd9ce4a largely just a simplification. also its often referred to as the angular dispersion with regards to the prism
  21. all particles have an antiparticle. Though in some cases some particles are their own antiparticle. photon for example its antiparticle is the antiphoton. The difference is the helicity as the photon doesn't have a charge.
  22. Then you missed the details of Snells law with chromatic dispersion and the subsequent changes of index due to changes in phase velocity of Light through a medium. Are you claiming the following doesn't occur https://en.wikipedia.org/wiki/Dispersion_(optics) https://en.wikipedia.org/wiki/Phase_velocity https://en.wikipedia.org/wiki/Dispersion_relation Obviously some materials are non dispersive, however a prism or water vapours are. The properties of the material and its sometimes dependency of frequency to index of refraction is the determining factor. Some materials are also birefringent though they depend on the polarization. (calcite for example).
  23. I mentioned earlier that the tests for CPT and Lorentz invariance are extensive as well as to high precision. To give a better idea here is a collective of the relevant datatables. Tables D15 and D16 apply to photons. These tables are a bit tricky as there is 44 total parameters 20 for CPT related. These additional parameters involve extensions to describe mathematically the relevant violation. https://arxiv.org/abs/0801.0287 Changing the photon direction is not the same thing as time reversal symmetry involved in the photon/antiphoton symmetry relations. Stimulated emissions involve momentum transfer. Yes you should have Lorentz symmetry in the momentum transfer however the time symmetry in Lorentz has distinctions from CPT symmetry which involve the Dirac equations. Lets do a simple thought experiment take a photon/antiphoton pair. The only difference is the polarity relations and the photon is its own antiparticle. Left hand, right polarizations. They both have the same energy/momentum so the transfer of momentum should be the same when interacting with an atom. We should be clear which time reversal symmetry are we testing for
  24. No the article specifies super conductivity at room temperature under high pressure
  25. My meaning by applying Snells law is to demonstrate in the maths as to how it applies we both agree it does.
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