How to measure spatial distances?
arXiv:gr-qc/9512006 · doi:10.1007/BF02104755
Abstract
The use of time--like geodesics to measure temporal distances is better justified than the use of space--like geodesics for a measurement of spatial distances. We give examples where a ''spatial distance'' cannot be appropriately determined by the length of a space--like geodesic.
4 pages, latex, no figures