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From: Thomas Heger <ttt_heg@web.de>
Newsgroups: sci.physics.relativity
Subject: Re: the notion of relativity of simultaneity
Date: Sun, 6 Oct 2024 09:56:05 +0200
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Am Samstag000005, 05.10.2024 um 12:14 schrieb Richard Hachel:
> Le 05/10/2024 à 09:52, Thomas Heger a écrit :
>>>
>>
>> Sure:
>>
>> The observer see remote events 'live'.
>>
>> But he sees remote events also delayed!
>>
>> What we see in the night sky is NOT happening now, but earlier than now.
>>
>> We see events now, which happenend the longer ago the further  away.
>>
>> It is therefore patently irrelevant, what the observer sees, because 
>> these impressions are pictures, we receive from the past.
>>
>> The 'real thing' is supposed to exist, but remains invisible for a 
>> long time.
>>
>> This 'real thing' is invisible, but real, while our impressions are 
>> visible, but not real.
>>
>> We would need to correct this error 'by hand', because we cannot see, 
>> what is happening now.
>>
>> Such a correction isn't that difficult, since we only need to take the 
>> delay into consideration.
>>
>> A certain shell around the observer represents a certain set of 
>> points, from where we receive simultaneous signals at the same time.
>>
>> For other shells further away or closer to us, we need to add or 
>> subtract the delay relative to that shell mentioned above.
>>
>> If we reduce that shell to zero radius, we would need to measure only 
>> delay.
>>
>> This delay should be used to compensate the time needed for signals to 
>> travel from remote events to the observers.
>>
>> What is happening now, that will be seen with such a delay later.
>>
>> Therefore, the (hyperplane of the) present is real, but cannot be seen,
>>
>> It is constructed by assuming a hypothetical signal, which needs no 
>> time to travel, hence is here once emitted.
>>
>>
>> This does not exist, but that doesn't matter for a definition.
>>
>>
>> TH
>>
>> ..
>>
>>>>
> 
> It is a pity that you do not understand, or do not want to understand 
> the theory of relativity Hachel version, yet much simpler, logical, and 
> without paradox (the Langevin paradox, the Andromeda paradox, and the 
> Erheinfest paradox do not exist in Hachel).
> You still do not understand the notion of relativity of simultaneity and 
> it is a great pity.

You want to say, that we can see galaxies right now and in real time, 
which are billions of light years away???

This would require a speed of light of infinity!

I do, however, think, that lightspeed is finite.

I personally use a different picture and regard velocity as an angle (in 
spacetime).

The 'angle' is 45° in a Minkowski diagramm.

This generates what we call 'light cone' and those cones are based on 
the equality of timelike and spacelike 'steps'.

For instantaneuos travel of signals I see no reason.


> We observe the universe live, as paradoxical as it may seem, and the 
> belief in a light that takes years to reach us is only due to a 
> misunderstanding of spatiotemporal geometry.
> 
> It is the child who is right about the big relativist bigwig.
> 
> A child who sees a star (let's say Sirius) does not ask himself the 
> question of whether what he sees is real or not, or whether Sirius has 
> not existed for years...
> 
> And it is the child who is right, everything is given live (in a vacuum).
> 
> The huge blunder of the physicists is intellectual, and not experimental.
> They will lay a wire coupled to a source A and another, coupled to a 
> source B.
> 
> Then they will launch an electromagnetic signal from A to B.
> 
> They do not notice that they are neither in A nor in B, but placed 
> transversely to the flow of information. This is what I have been 
> explaining for 40 years, and for 40 years, it would seem that 
> relativistic religiosity is so fierce that no one WANTS to understand, 
> while it is at the intellectual level of a middle school student.
> 
> Transversely, in my hyperplane of present, of simultaneity, I will 
> notice that t=AB/c and I will decree that the speed of light is v=c.
> 
> However, I should rather write Vo=c (because it is only what I observe 
> from my transverse position, and NEVER longitudinal).
> 
> Physicists do not realize that the light of Sirius is instantaneous, 
> that Sirius IS in my present moment, and that we are FOR ME, in perfect 
> simultaneity of existence.
> 
> This horse in this meadow, this moon in this sky, this galaxy in this 
> telescope are observed live.
???

We have speed of light, haven't we?

So, how do you come to 'instantaneous'?
  ...


TH