WebSep 17, 2011 · Yes, a perfect fluid has a comoving frame. The CMB, ignoring its inhomogeneities, is well approximated by a perfect fluid. Reread Marcus's first post -- the rest frame of the CMB is the frame in which the fluid has "no average overall motion", i.e. it's the comoving reference frame of the fluid. Sep 16, 2011. WebThe photons that forms the CMB come from what is called the last scattering surface. This surface is a different one depending on the position in spacetime of the observer. So …
Special Relativity with a Preferred Frame and the Relativity Principle
WebApr 22, 2011 · The photons that forms the cmb come from what is called the last scattering surface. This surface is a different one depending on the position in spacetime of the … WebOct 10, 2013 · The Galactic centre can also be used as a reference frame for the motion of galaxies in our local group. e.g. when talking about the motion of the Andromeda Galaxy. … tarif bateau marseille tanger
By Name NASA/IPAC Extragalactic Database
WebThe CMB frame can certainly be used as a valid reference frame and is the de facto frame in which much of cosmology is actually done. (For example, the age of the universe is given in cosmological time, which is the coordinate time of the CMB frame.) WebOct 11, 2016 · Download PDF Abstract: The modern view, that there exists a preferred frame of reference related to the cosmic microwave background (CMB), is in apparent contradiction with the principles of special relativity. The purpose of the present study is to develop a counterpart of the special relativity theory that is consistent with the existence … WebIn theoretical physics, a preferred frame or privileged frame is usually a special hypothetical frame of reference in which the laws of physics might appear to be identifiably different (simpler) from those in other frames.. In theories that apply the principle of relativity to inertial motion, physics is the same in all inertial frames, and is even the same in all … 食べ物 うんちになるまで 時間