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About Deja Vu: Mass and travelling into an alternate universe.

  1. Feb 15, 2009 #1
    Hi all, not sure if any of you all have watched it. Denzel washington acted in it.
    http://www.imdb.com/title/tt0453467/" [Broken]

    I have a question regarding what they said, they need to keep the mass low if they want to transfer an object into the alternate universe, which in the movie it's called the 'Past'.
    I don't understand how mass is related to time travel.

    Basically, they sent an object into the alternate universe via a wormhole.
    Last edited by a moderator: May 4, 2017
  2. jcsd
  3. Feb 16, 2009 #2


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    Hi Chaste! :smile:

    Obviously, this is complete rubbish, but I think the idea behind it is that wormholes would be unstable, and too much energy (which includes mass) going into it would cause it to collapse. :wink:

    (and technically what they did isn't time-travel, it's just travel to a different place in a very similar universe)
  4. Feb 16, 2009 #3
    hey tim! thanks for your reply!!! ya, somehow they travelled to a different world with a completely same worldline just that it is 4 and 1/2 days ago.
    But can you tell me what's the logic(explanation) behind too much energy(mass, E=mc^2) destroying the wormhole?

    and do you remember the part where Denzel Washington points a laser pointer at the monitors and they said the EM field is destroyed?
    Why is there an em field?
  5. Feb 16, 2009 #4


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    Is there a reason why this is such a curiosity for you? I mean, these movie-makers could simply make up some non-existent physics principles. They have been known to do that!

  6. Feb 16, 2009 #5


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    Why are you looking for logic in a science-fiction movie's science? :smile:
  7. Feb 16, 2009 #6
    oh. I forgot to mention I'm doing a presentation on a movie review. uhm, I'm just trying to pre-empt some questions from my audience
  8. Feb 16, 2009 #7


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  9. Feb 18, 2009 #8
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