{"version":"1.0","type":"link","title":"Synchronous frame - Newikis","description":"A synchronous frame is a reference frame in which the time coordinate defines proper time for all co-moving observers. It is built by choosing some constant time hypersurface as an origin, such that has in every point a normal along the time line and a light cone with an apex in that point can be…","provider_name":"Newikis","provider_url":"https://newikis.com","cache_age":86400}