Hey all, I was trying to compare the similarity between time dilation due to gravity and the scenario of an accelerating rocket through the equivalence principle and there's something tha blocks my understanding about their similarity. I found a good distance-time graph of the accelerating rocket scenario a post of ghostpy which I found in this thread: https://www.physicsforums.com/threa...-time-dilation-effects-inside-of-them.741028/ . So credits to him. The y-axis represents the distance and the x-axis the time. Two observers are standing at y=1 and y=0. The upper one is the emitter who is sending light pulses to the receiver below while they're both accelerating. Here's are some conclusions that I deducted from one another that confuses me about how time dilation due to gravity should be similar to an accelerating rocket scenario. 1. If the accelerating rocket scenario is used to explain time dilation due to gravity, then shouldn't the emitter (upper observer) experience a lower acceleration than the receiver since he's further away from the gravitational field? 2. If 1. is true, then this means that the receiver below should measure even shorter intervals than the time intervals shown in the graph above since the receiver is having a larger acceleration than the emitter. 3. If 2. is true, then that means that if an emitter is sitting in a zero gravity field, the receiver should measure an even shorter time interval between light pulses than in point 2. Much to the extent that in this scenario, acceleration isn't even needed anymore for time dilation. A mere constant velocity of the receiver would let the receiver still measure shorter time intervals of light pulses because the emitter is standing still. If these 3 points are true, then what is it that makes acceleration needed to use it as an equivalence principle for the time dilation due to gravity if point 3 shows that just velocity is enough for time dilation? And why does the equivalence principle show in the rocket scenario that they're both undergoing the same acceleration while in reality they should have a different force of g due to height differences?