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simultaneity    
n. 同时发生,同时

同时发生,同时

simultaneity
同时性

simultaneity
n 1: happening or existing or done at the same time [synonym:
{simultaneity}, {simultaneousness}]

Simultaneity \Si`mul*ta*ne"i*ty\, n.
The quality or state of being simultaneous; simultaneousness.
[1913 Webster]


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  • Relativity of simultaneity in actuality • Physics Forums
    The discussion centers on the relativity of simultaneity, emphasizing that lightning strikes can appear simultaneous in one frame but not in another, highlighting the frame-dependent nature of simultaneity Observers in different frames will report different times for the same events, with one frame considering the events simultaneous while the other does not The conversation critiques common
  • Real life examples of simultaneity - Physics Forums
    Can you give me some "real life" examples of simultaneity? For instance I know the one about the train and the lighting strikes but I was under the impression that this only holds up if the train is moving close to the speed of light Thanks
  • Is Simultaneity Absolute or Relative in the Theory of Relativity?
    There is a difference between the simultaneity of two events and the simultaneity of the light of those two events arriving at an observer The former is not frame dependent thus cannot be transformed away by motion The latter can and is transformed away by motion which is the basis for the relativity of simultaneity
  • Variation of the lightning train thought experiment
    First, Einstein's lightning thought experiment is overcomplicated and confusing I always suggest ignoring it, as there are many simpler and better ways to demonstrate the relativity of simultaneity That said, I do confess that no student has ever heeded my advice! Second, SR does not depend on the finite travel time of a light signal from an event to an observer The delay in a signal
  • Einsteins train and simultaneity • Physics Forums
    I gave Einstein's operational definition of simultaneity, which is the one he used when he presented his train thought experiment I agree that this is not the most general definition, but it seems like the most relevant one for this particular discussion (since the OP doesn't appear to be considering non-inertial coordinates or curved spacetimes)
  • Bells theorem, QFT, and the Relativity of Simultaneity
    Relativity of simultaneity still plays a role though, right? Presumably that is a characteristic feature of Minkowski spacetime? SR is a theory of space and time There is noting inherently deterministic about the phenomena playing out on that background Particle decay, for example, is inherently non-deterministic
  • Could we ever create a black hole? • Physics Forums
    Thread 'Relativity of simultaneity in actuality' I’m attaching two figures from the book, Basic concepts in relativity and QT, by Resnick and Halliday They are describing the relativity of simultaneity from a theoretical pov, which I understand
  • The Block Universe - Refuting a Common Argument - Physics Forums
    The common argument for the "block universe" comes in several forms, all logically equivalent; the one I'll use here is the "Andromeda paradox":
  • Einsteins train-lightning scenario doesnt demonstrate relativity
    The popular account of Einstein's train-and-lightening thought experiment doesn't demonstrate "the relativity of simultaneity" as it is always claimed In fact, it does the opposite: By describing the embankment observer as "at rest" relative to the strike locations and the train passenger as
  • Solve Absolute Simultaneity with Einsteins Procedure
    Absolute simultaneity refers to the hypothetical coincidence of two or more events in different points in space for all observers in the universe It is shown in the theory of relativity that there may be always observers for whom simultaneity won't correspond to the same moments in time and therefore simultaneity is always relative





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