Re: Oh my God!

On Sun, 29 Sep 2024 20:53:41 +0000, gharnagel wrote:

Your initial statement is that the S' frame is stationary and you
are going to move the lab frame.  Then you place two observers, C
and D, orthogonal because they are stationary in S'.  Then you
send a signal from D to C infinitely fast.
>
Now in the triptych, you move the lab frame S.  That's fine, but
S' is the STATIONARY frame: C and D should still be vertical.
So I must assume that you are actually switching to the S frame
and making IT stationary, right?

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I stated very clearly that I am using the inverse Lorentz transform
to map the events of STATIONARY frame S' to my MOVING lab frame. To
keep the diagrams uncluttered, I did not draw the coordinates of my
lab frame. My coordinates remain orthogonal.
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So you have done exactly what Morin, Taylor, Wheeler and Recami
say NOT to do.  You have switched horses (er, frames) in the
middle of the stream (er, problem setup).

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No, I am not switching back and forth between frames. For the purpose
of any one diagram, my moving frame is moving at a constant rate
relative to the stationary frame, and I stick to that one frame
without jumping around.
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So let's look at the figure on the right with v = 0.1c.  As viewed
from S, t1 = \gamma (0 + 0.1L) = 0.1gL.  At that time in S, the time
in C is not at t = 0.  This is relativity of simultaneity (RoS).
Prok, YOU are the one trying to rip SR to shreds by pretending you
can ignore RoS.  Figures 4 and 5 in DOI: 10.13189/ujpa.2023.170101
obey RoS, your figures do not.

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There is no problem with my triptych diagrams. As I have drawn them,
the event associated with receipt of the signal is at t'=0 in all
three scenarios. It is the diagram below the triptych labeled "Gary's
proposal" which is totally INSANE. In order to prevent the arrow from
moving backwards in time as observed in my moving frame, you would
have the context of the receiving event SHIFT as the result of my
movement.
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Furthermore, let's remove the signal in the triptych.  Now, what
has changed in the three figures?  NOTHING AT ALL.  All the events
are still right where they were as observed by those stationary
in S.  It doesn't matter what the signal speed is, it changes
nothing.