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Was gravitational length contraction predicted by general theory of relativity ?

  1. Apr 17, 2012 #1
    I have read somewhere about the phenomenon called gravitational length contraction.Was gravitational length contraction predicted by general theory of relativity?
     
  2. jcsd
  3. Apr 17, 2012 #2

    Dale

    Staff: Mentor

    You have to define how you are measuring the length of a distant object.
     
  4. Apr 17, 2012 #3
    Yes, and you can read it here (English translation p.196-197:
    http://web.archive.org/web/20060829045130/http://www.alberteinstein.info/gallery/gtext3.html

    In particular he concludes there:

    - that the "rod thus appears a little shortened [..] by the presence of the gravitational field, if the rod is laid along a radius", and
    - that "the gravitational field [..] has no influence on the length of a rod" in the tangential position.

    PS: of more practical use was his prediction of gravitational time dilation, which he explains next.

    Harald
     
    Last edited: Apr 17, 2012
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