Spin effect on Time

[Silvestru]

This is potentially really dumb, especially the way that I am going to formulate it but please go along with me.

I was reading a different thread (Time and speed and how speed impacts time) and I have a basic understanding of  concepts like the Twin Paradox but was wondering if let's say Taz would spin on the same spot on the ground at a respectable speed close to c for a few minutes, would it have the same effect as if he would travel in a rocket in space and he would have basically traveled in the future when he stops? (I mean if his twin that did not perform the spin motion age more?)

 

[swansont]

The parts that were spinning faster would see less elapsed time that the parts that were spinning slower. This was addressed by the Hafele-Keating experiment (which had the added effect of having clocks in different parts of a gravitational potential) and also by a follow-on of the Pound-Rebka experiment, which had a radioactive sample in a centrifuge, and saw the change in frequency of the emitted vs absorbed radiation of the material that was moving vs at the center of the device.

 

edit:

Here's a write-up on the latter experiment and its relatives. Sources listed at the end.

http://blogs.scienceforums.net/swansont/archives/1426

[Silvestru]

Hmm so technically if I would dig a whole to be closer to earth's center of gravity for example, I would age slower than you who are on the surface? (of course by a very small amount).

[swansont]

1 minute ago, Silvestru said:

Hmm so technically if I would dig a whole to be closer to earth's center of gravity for example, I would age slower than you who are on the surface? (of course by a very small amount).

Yes. Or if you climb a mountain, you age more quickly. By about a part in 10^16 per meter. But that's solely due to gravitational potential, not spin.

[Silvestru]

15 hours ago, swansont said:

Yes. Or if you climb a mountain, you age more quickly. By about a part in 10^16 per meter. But that's solely due to gravitational potential, not spin.

Thank you swansont. Yes I know the second part has nothing to do with spin, I just thought I would air all my questions on the topic haha.