The discussion revolves around the ordering of events in different frames of reference, particularly in the context of special relativity. Participants explore whether an event that is causally linked can appear to occur in a different order from different observers' perspectives.
Participants express differing views on whether the order of events can change in different frames of reference, with some arguing that it cannot due to causal relationships, while others raise questions about the implications of special relativity.
The discussion includes assumptions about causal relationships and the properties of light cones, which may not be universally agreed upon. The definition of invariant distance and its implications for event ordering remain unresolved.
Individuals interested in the foundations of special relativity, causal relationships in physics, and the implications of different frames of reference may find this discussion relevant.
GreenLRan said:Suppose event A causes event B. To one observer, event A comes before event B. Is it possible that in another frame of reference event B could come before event A? If so, how?
This implies that B is in the interior of, or on the boundary of, the future light cone of A.GreenLRan said:Suppose event A causes event B.
The only information that this adds is that B isn't on the boundary of the future light cone of A, so it must be in the interior.GreenLRan said:To one observer, event A comes before event B.
No. If B had been outside of the future light cone of A, it would have been a different story. I suggest that you draw space-time diagrams to see why this is so.GreenLRan said:Is it possible that in another frame of reference event B could come before event A? If so, how?