Dear Friends(adsbygoogle = window.adsbygoogle || []).push({});

Is there any coordinate tetrad in spacetime except Cartesian basis ?

since tetrad basis should be orthogonal (( In Lorentzian description ))and the only orthogonal basis is Cartesian ( the metric is (+1,-1,-1,-1 ) but in any other coordinate basis like Spherical metric is ( +1,-1,-r,-rsino ) and they aren't coordiante tetrad .

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Coordinate tetrads

**Physics Forums | Science Articles, Homework Help, Discussion**