Gravity & Time Travel

[Dunadin777]

Originally Posted by Brett

Are you sure about that? I have a feeling that gravitational frequency shifting is exactly the same effect as gravitational time dilation, and that they both become significant at the same point and for the same reason. The frequency shifting can be thought of as the effect of gravitational time dilation on successive peaks of the EM wave. That is, 1/frequency is effected the same as successive signals. But I never studied general relativity formally, and I might be wrong.

What I meant is that a frequency shift of 1/1000 would effectively change the signal frequency, making it incomprehensible to any receivers not accounting for relativity, while the concurrent time shift wouldn't be noticeable to anyone at the time, as that would only be 1 second 'lost' per 17 minutes or so. Our perception of time is much less finnicky than the frequency gradation of our technology. We could have a conversation with someone operating at half our time rate without any technical aid, but any devices we might use would need to be recalibrated to translate their signals in a meaningful way.