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From: Thomas Heger <ttt_heg@web.de>
Newsgroups: sci.physics.relativity
Subject: Re: [SR and synchronization] Cognitive Dissonances and Mental
 Blockage
Date: Wed, 21 Aug 2024 08:22:09 +0200
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Am Dienstag000020, 20.08.2024 um 08:39 schrieb Python:
> Le 20/08/2024 à 08:30, Thomas Heger a écrit :
>> Am Montag000019, 19.08.2024 um 14:56 schrieb Python:
>> ...
>>>> There is also no equation, which could eventually be interpreted as 
>>>> delay calculation.
>>>
>>> As I've shown there is. A single step from the provided equations
>>> leads to t_A = t_B - (AB)/c
>>>
>>>> Delay for a signal from A->B in distance x would be:
>>>>
>>>> x=c*t => delay (A->B)= x/c
>>>>
>>>> Extremely simple, isn't it?
>>>
>>> Extremely stupid insteed x=c*t is not generally true. x/c is
>>> not at all the delay your asking for. (AB)/c is such a delay.
>>
>> Einstein defined two coordinate systems (K and k).
>>
>> System k was placed with its center upon the axis of x of system K.
>>
>> So the value 'x' is a coordinate in respect to system K  with distance 
>> |x| to system K's center.
>>
>> Now I use this setting and place A in the center of K and B in the 
>> center of k.
>>
>> So: the distance from A to B is x.
>>
>> Well, yes, this was a little bad, because I had to explain it in the 
>> first place, before I could use this setting.
> 
> What you "explain" is, again, something you made up out of nothing.
> 
> Systems K and k are even defined yet in paragraph 2.
> 
> It makes basically no sense to put the center of K at A and the
> center of k at B. K and k are in relative motion while clock-A
> and clock-B are mutually at rest. So your "setting" is setting
> v to 0.


What???

A coordinate system can actually be placed anywhere.

Here we have a point 'A' and an observer (also called 'A') and a 
coordinates system called 'K'.

The best and most natural setting would be, that you place the 
coordinate system with its center at 'A' and also the observer in K there.

Since the coordinate system k is equivalent in function and settings, we 
should place 'B' in the center of k.

This is simply the best way to place all the items mentioned into a 
useful order.

If you (or Einstein) like something else, this would be allowed, but you 
had to say so.
....


TH