Can Information Really Travel Simultaneously in the Universe?

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SUMMARY

The discussion centers on the nature of simultaneity in the universe, particularly in the context of the speed of information, which is limited to the speed of light (c). It is established that simultaneity is relative and depends on the observer's frame of reference, meaning that events can be simultaneous for one observer but not for another. The conversation also clarifies that while causality dictates the order of events, it does not preclude the possibility of simultaneous occurrences in different frames. The confusion surrounding the movement and state changes of particles is addressed, emphasizing that particles can indeed exhibit simultaneous states from various perspectives.

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  • Understanding of Einstein's theory of relativity
  • Familiarity with the concept of simultaneity in physics
  • Basic knowledge of particle physics and Planck time
  • Awareness of the limitations imposed by the speed of light
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  • Research the implications of Einstein's theory of relativity on simultaneity
  • Explore the concept of Planck time and its significance in quantum mechanics
  • Study the differences between causality and simultaneity in various reference frames
  • Investigate how different observers perceive events in relativistic physics
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Physicists, students of theoretical physics, and anyone interested in the fundamental principles of time, space, and the nature of information in the universe.

Hippasos
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The top speed of information is c.

1. Then is it correct to say that theoretically there cannot be any simultaneous happenings in the universe (like theories depend on causality)?

2. Is it then correct to deduce that only one particle in the universe is at changing state at a given time (Planck time?)?

3. So - theoretically - no single particle can even move and rotate simultaneously... ?

4. Or can not move "along more than one axis" at a time (Planck time?)... ?

5. Again I'm confused... :D ?
 
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Your first assumption is incorrect.
There's no objection to simultaneous events, it's just that "simultaneous" has different meanings to different obervers.
"Simultaneous" just means: light signals from these events reach my clock at the same instant of time.
Note that simultaneity is something different from causality. "Even" in relativity, if event A happened before B in some arbitrary frame, then there will be no equivalent frame in which B takes place after A).
 
CompuChip said:
Your first assumption is incorrect.
after A).

... and they all lived happily ever after, or, originally, "happily until their deaths".

Sorry - embarrassed - once again...
 

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