- #1

- 371

- 0

## Main Question or Discussion Point

Let us say there is a curved region of spacetime whose curvature is [tex]\kappa(s)[/tex]. How does one find the coordinates of the unit vector normal to a certain point on the region of spacetime? I tried searching

Thanks.

*Hamilton's principle and the general theory of relativity*but I could not find any equation which describes the coordinates of the normal vector to the curved region of spacetime.Thanks.