It is said that Earth shape is roughly gravitational equi-potential surface and clock rate change due to change of the radius of rotation is compensated. But the tangential velocity component orientation differs wrt the direction of velocity relative to Milky Way centre hence clock rates should vary with longitude and sidereal time of the day.
The question comes to me in the context of Torr-Kolen experiment:
Article An experiment to measure the one-way velocity of propagation...
In this experiment two clock on the Earth's surface located on at the same latitude are assumed to have constant phase difference that is not changing while the Earth is rotating. It means that those clock relative rates remain consant.
Excellent question, dear Andrew, to which you gave the right answer. However, it depends from which clock you use... Time is not intrinsic, but a convention depending from the actual clock.
If gravity acceleration is not identical everywhere, the law of conservation of energy may apply (in different ways, depending from the clock), and I would certainly first speak of the Sun as an originator of such changes, before the galaxy.
With best regards,
Thierry De Mees
Andrew, there is a definite bias of rotating vector with respect to the center of the galaxy, See attached explanation using Principles of Causal Conspiracy Theory.
Why would rates stabilise?
My understanding is that they would generally be different but would return in 24 hours to the same difference but this would drift as the earth is orbiting the sun.
Dear Andrew, when you would take a pendulum as clock, I think it is obvious: the forces of gravity play a role (moon, sun, Jupiter, Saturn, etc and the Milky Way), the "centrifugal" effect, and the Coriolis force, depending from the latitude.
But you can take a leaking pipe as clock too, and so on...
Best regards,
Thierry De Mees
Dear Thierry
Certainly all matters the question is to what degree.I am trying to estimate the absolute velocity change influence hoping it has been done before. Exact derivation seems to be complicated.
Torr-Kolen experiment designed to estimate absolute velocity of the Earth assume without proof that two clocks positioned East West retain their relative phase during 12h rotation interval. Not sure if this is true. I think it's not but for now I have no firm proof of that..
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