1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

General Relativity query

  1. Apr 9, 2007 #1
    Is it always true that dt/ds is always positive, where t is the coordinate time and s is the proper time? I suspect his is the case, but am not sure why.
  2. jcsd
  3. Apr 9, 2007 #2


    User Avatar
    Science Advisor
    Homework Helper

    No, it's not true. dt^2-dx^2=ds^2. You can reverse coordinate time freely t->-t. After all, it's just a coordinate.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: General Relativity query
  1. General Relativity (Replies: 16)

  2. General Relativity (Replies: 24)

  3. General Relativity (Replies: 3)

  4. General Relativity (Replies: 13)

  5. General Relativity (Replies: 4)