T
trth_skr
Guest
If you were sensitive enough (and I mean extremely, extremely, extremely sensitive) I suppose your friend could induce this feeling. The key is gravititation. If you follow the link at the top of this thread, you will see how I expalin that the distant rotating cosmic masses generate forces at earth- gravitational and inertial (Coriolis, centrifigal, etc.). In fact in general relativity, gravitational and inertial forces are a manifestation of one phenomenon referred to as gravito-magnetism.Suppose I was somewhere in space, and a friend of mine was off in space a distance away from me. If I managed to start myself rotating, I would get a feeling in my gut as a result of the acceleration. I am the one actually rotating, and I can say so because I can feel it in my gut. My friend would feel nothing, he is not revolving around me, he is not accelerating.
If the tables were turned, and I stayed stationary and my friend managed to start revolving around me, he would feel it in HIS gut, he is the one who is accelerating. I would feel nothing, because I am not accelerating, I am stationary.
If we were sensitive enough we would be able to feel the fact that we are on a rotating earth, however I suspect there are instruments that can measure the acceleration.
Are you saying that my distant friend can revolve around me, and thus induce a feeling of acceleration in my gut?
In the Geocentric case, the entire universe is accelerating (moving in rotation at constant angular rate). There is no earth vs. universe. The earth is stable because it is gyroscopically stabilized at the center of mass of the universe.The reason I arrived at this is because from the little I know about time dilation, it is the one who is Actually accelerating that experiences the dilation. Even though the twin on earth sees the twin in the space ship accelerating away from him, and the twin on the ship sees the twin on earth accelerating away from HIM, only one is actually accelerating.
So in my laymans understanding, acceleration is not relative so to speak. And therefore I can use it to tell who is really rotating.
Ok, pysicists be gentle…
see, Misner, Thorne and Wheeler, GRAVITATION (pp. 1117-1119)
Also, at the earth, nothing is moving any faster than one rotation per 24 hours, so what you would feel is similar to what you do (not) feel sitting on the earth. Ifthe universe is rotating around the stabilized earth, it will affect instruments capable of detecting rotation.