timelike congruence Definition and 1 Threads

  1. cianfa72

    Graduate About the definition of Born rigidity

    I'd ask for clarification on the definition of Born rigidity, see for instance Born Rigidity. In the context of SR (flat spacetime) consider a ruler moving through spacetime. Its points define a timelike congruence in the (bounded) region of flat spacetime it occupies. The general definition...