Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Timelike, spacelike, or null?

  1. Apr 29, 2010 #1
    If I have a line element [tex]ds^{2} = ...[/tex] and a curve defined by [tex]x^{1} = f( \lambda )[/tex], [tex]x^{2} = g( \lambda )[/tex] etc, and I wand to know if the curve is timelike, spacelike, or null, do I do so by checking the sign of [tex]g_{\mu \nu} \frac{dx^{\mu}}{d\lambda} \frac{dx^{\nu}}{d\lambda}[/tex] ?
  2. jcsd
  3. Apr 29, 2010 #2

    George Jones

    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

  4. Apr 29, 2010 #3
    awesome, thanks!
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook