g-field as in gravitational field (character limit) As far as I know, special relativity says that observers traveling fast experience slower time than observers at rest. So if an observer were to accelerate in a space ship, his time would get slower and slower relative to ours. But the observer in the space ship cannot tell the difference between a reference frame at rest in a gravitational field and an accelerating reference frame, and neither can we. So why isn't our time getting slower and slower, just like his? As far as I've learned, physics is the same in a reference frame that is accelerating and one at rest in a gravitational field (Einstein's elevator thought experiment). Sorry if this is a dumb question, and thanks in advance.