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Date: Thu, 3 Oct 2024 13:25:46 +0200
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Subject: Re: A discussion of 'Tachyons, the 4-momentum ...'
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W dniu 03.10.2024 o 12:10, gharnagel pisze:
> In DOI: 10.13189/ujpa.2023.170101, Figure 4 depicts a thought
> experiment involving FTL communication.  This figure is
> attached to this post.  We, the viewers, are at rest with
> observers A and B.
> 
> At event E1, observer A, at x = 0, t = vL/c^2, sends an
> infinitely-fast tachyon signal to observer B, who receives
> it at x = L, t = vL/c^2.  B immediately passes it to D, who

who is getting it before E1 happened.
Or isn't he, poor halfbrain?