Notices
Results 1 to 11 of 11

Thread: Why cannot the curvature of Universe be explained by mere curvature of space?

  1. #1 Why cannot the curvature of Universe be explained by mere curvature of space? 
    Suspended
    Join Date
    Jul 2011
    Posts
    17
    like say in a soap bubble?


    Reply With Quote  
     

  2.  
     

  3. #2  
    Forum Junior
    Join Date
    Mar 2008
    Posts
    267
    explain what curvature of teh universe?

    the curvature of the universe has never been observed.


    Reply With Quote  
     

  4. #3  
    Suspended
    Join Date
    Jul 2011
    Posts
    17
    let's see if this sounds better:

    WHY COULDN'T CURVATURE OF SPACETIME BE JUST CURVATURE OF SPACE?

    what forces make a soap bubble a sphere?
    Reply With Quote  
     

  5. #4  
    Moderator Moderator Dishmaster's Avatar
    Join Date
    Apr 2008
    Location
    Heidelberg, Germany
    Posts
    1,624
    Quote Originally Posted by peterpan View Post
    let's see if this sounds better:

    WHY COULDN'T CURVATURE OF SPACETIME BE JUST CURVATURE OF SPACE?

    what forces make a soap bubble a sphere?
    Surface tension. What does it have to do with space curvature? The universe is not bubble. At least the observable space has no edge.
    Reply With Quote  
     

  6. #5  
    Forum Junior
    Join Date
    Mar 2008
    Posts
    267
    Quote Originally Posted by peterpan View Post
    like say in a soap bubble?
    are you asking about the balloon analogy?

    yes, there could be a 4th spatial dimension but the official position is that if you cant see it then it doesnt exist.
    Reply With Quote  
     

  7. #6  
    Comet Dust Collector Moderator
    Join Date
    Mar 2011
    Location
    New Jersey, USA
    Posts
    2,848
    You are a Spammer
    Reply With Quote  
     

  8. #7  
    Moderator Moderator Dishmaster's Avatar
    Join Date
    Apr 2008
    Location
    Heidelberg, Germany
    Posts
    1,624
    Quote Originally Posted by MeteorWayne View Post
    You are a Spammer
    I have moved Leonov's posts to an existing thread in the section "New Hypotheses and Ideas".
    Reply With Quote  
     

  9. #8  
    Suspended
    Join Date
    Jul 2011
    Posts
    21
    Quote Originally Posted by Dishmaster View Post
    [
    Surface tension. What does it have to do with space curvature?
    The universe is not bubble.
    At least the observable space has no edge.
    could you explain briefly how surface tension curves the soap bubble?
    the universe is expanding, is it expanding like a soap bubble?
    as the edge is not observable, does this imply there is/can't be an edge?
    universe has no curvature, but spacetime is curved, space is not curved, time is not curved.Right?
    Reply With Quote  
     

  10. #9  
    Forum Bachelors Degree
    Join Date
    May 2010
    Posts
    419
    Surface tensiondoesn't curve the soap bubble. It is created as such and surface tension keeps it from collapsing or bursting.

    The universe is curved or warped due to gravity, the only true long range force in the univese ( EMF can be mitigated by charge placement ).

    There are no similarities whatsoever between bubbles, a two dimensional surface curved or embedded in three dimensional space, and the universe. The universe would not be embedded in a higher dimensional space.
    Reply With Quote  
     

  11. #10  
    Suspended
    Join Date
    Jul 2011
    Posts
    21
    Quote Originally Posted by MigL View Post
    1) surface tension keeps it from collapsing or bursting.

    2)The universe is curved or warped due to gravity,
    3)There are no similarities whatsoever between bubbles, a two dimensional surface curved or embedded in three dimensional space, and the universe.
    4)The universe would not be embedded in a higher dimensional space.
    Thanks migl, but that is exactly what I meant:

    1) Einstein's equations are tensorial there 's where I see a huge similarity
    2)
    so gravity might be the equivalent of surface tension (2 'the curvature of universe ' has been branded as 'false statement' by granpa,above)
    3) if it were so it would be consequent that curvature of universe is curvature of space
    4) It is not necessarily so, the soap is not 2-dimension, its 3-rd dimension is just thin.If you bring it on a larger scale , it's huge.

    I hope it is clearer ,now.
    Last edited by phyz; July 25th, 2011 at 02:02 AM.
    Reply With Quote  
     

  12. #11  
    Forum Bachelors Degree
    Join Date
    May 2010
    Posts
    419
    No again.
    Mass/energy curves or warps the 'fabric' of space/time and we call this curvature gravity.
    A 'tensor' has nothing to do with tension, it is a mathematical construct like a vector or a matrix.
    Yes, the surface of a soap bubble is two dimensional.
    Reply With Quote  
     

Bookmarks
Bookmarks
Posting Permissions
  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •