It is said that in the case of a homogeneous and isotropic spacetime, the surfaces of homogeneity must be orthogonal to the tangents to the world lines of the isotropic observer.(adsbygoogle = window.adsbygoogle || []).push({});

Does this mean that the isotropic observers are always at rest in a surface of homogeneity?

**Physics Forums - The Fusion of Science and Community**

Dismiss Notice

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!

# Isotropic Observer

Loading...

Similar Threads for Isotropic Observer | Date |
---|---|

I Spacetime is homogeneous and isotropic | Apr 14, 2018 |

B How can the speed of light be constant for all observers? | Mar 30, 2018 |

I FRW metric derivation: constraints from isotropic and homoge | Feb 26, 2018 |

I Are spherically symmetric and isotropic the same | Feb 26, 2018 |

I Static, Isotropic metric | Jun 12, 2017 |

**Physics Forums - The Fusion of Science and Community**