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From: "Paul.B.Andersen" <relativity@paulba.no>
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Subject: Re: Space-time interval (2)
Date: Tue, 13 Aug 2024 12:45:13 +0200
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Den 12.08.2024 22:25, skrev Richard Hachel:
> Le 12/08/2024 à 21:06, Python a écrit :
> 
>>> Finally, what is ds²? It is just -c².Tr²
>>
>> No! ds^2 = c^2 dt^2 - dl^2. 
> 
> LOL.
> 
> Non : ds²=dl²-c²dt²

https://paulba.no/pdf/TwinsByMetric.pdf
Chapter 1.

-- 
Paul

https://paulba.no/