Local inertial frame

Difficulty level:   

The reference frame of some observer, it makes rigorous the axiom that spacetime is locally flat — that is, special relativity. It is a frame in which the laws of physics are especially nice (“inertial”, also called unaccelerated which is possibly ambiguous), and applies only at close distances and times (“locally”) in curved spacetime

Leave a Reply

Your email address will not be published. Required fields are marked *