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Ds^{2} invariant interval as + or - proper time increment

  1. Feb 18, 2015 #1
    Some sources have ##ds^{2}=d\tau^{2} ##, and others have ##ds^{2}=-d\tau^{2}##,
    Does the sign depend on the signature chosen for the metric?

    Thanks in advance.
     
  2. jcsd
  3. Feb 18, 2015 #2

    Nugatory

    User Avatar

    Staff: Mentor

  4. Feb 18, 2015 #3
    Thanks, and just to confirm a ##(+,-,-,-)## signature has ##ds^{2}=d\tau^{2}## and a ##(-,+,+,+)## signature has ##ds^{2}=-d\tau^{2}##?
     
  5. Feb 18, 2015 #4

    Dale

    Staff: Mentor

    Yes. I prefer the second convention. (-+++)
     
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