I Is there only one structure of the universe?

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The discussion centers on the concept of different structures of the universe as illustrated by the interaction of two objects, A and B, with specific reference to their world lines. The scenario suggests that due to relativistic effects, particularly length contraction, observers may perceive different structures. However, the consensus in the thread is that despite these perceptions, there remains a singular underlying structure of the universe. Repeated inquiries on the topic have yielded consistent responses, leading to the closure of the thread. The conclusion affirms that there is not more than one structure of the universe.
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(See illustration) Object A is moving, to the right, really fast towards object B on the x axis. At (0,0) they meet. There are two rocks next to each other ahead of the speeding object A. The two rocks are shown as world lines red and green as they would exist for each observer. Assume that the length contraction is 1/2 for object A.

There would seem to be two different structures of the same thing in the universe. Is this correct?
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student34 said:
There would seem to be two different structures of the same thing in the universe. Is this correct?
No. You've asked the same question in multiple previous threads, and the answer hasn't changed.

Thread closed.
 
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Thread 'The Einstein Clock aka Light Clock'

Hello, everyone, hope someone will resolve my doubts. I have posted here some two years ago asking for an explanation of the Lorentz transforms derivation found in the Einstein 1905 paper. The answer I got seemed quite satisfactory. Two years after I revisit this derivation and this is what I see. In the Einstein original paper, the Lorentz transforms derivation included as a premise that light is always propagated along the direction perpendicular to the line of motion when viewed from the...
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