On 1/2/2025 9:06 PM, Alan Grayson wrote:


On Thursday, January 2, 2025 at 8:56:51 PM UTC-7 Brent Meeker wrote:

    There's nothing "absolute" about the CMB.  It's just a widely
    available common reference.  The same way we often use the Earth
    as a reference.  The laws of physics are the same when moving
    inertially relative to the CMB as relative to the Earth or Moon.

    Brent

What does "absolute" mean?
It would mean that the laws of physics were special in some sense, e.g. took a special form, in an /absolutely/ stationary state.

It sure seems as absolute as anyone can imagine; the same everywhere in the universe. AG
No.  It's just something that can be used as a reference, as could any other frame in inertial motion.  And it's not even a perfect reference since some parts move relative to others.

Brent




    On 1/2/2025 4:34 PM, Alan Grayson wrote:

            On Thursday, January 2, 2025 at 3:58:33 PM UTC-7 Quentin
    Anciaux wrote:

        The troll playing the victim... when will it cease ?


     Since the CMBR defines a frame of absolute rest, how does this
    effect Special Relativity, if at all? AG

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