Re: [Vo]:Fwd: Can retarded gravity be counteracted by tidal acceleration?

2010-03-31 Thread David Jonsson
Why not investigating an thought example of two relatively big bodies rotating around each other in perfectly circular orbit? Lets also assume that these bodies are rotating around their own axis with no inclination. The retardation means that one body will feel the force of the other assuming

Re: [Vo]:Fwd: Can retarded gravity be counteracted by tidal acceleration?

2010-03-04 Thread David Jonsson
Thanks for the replies. I will look on it later. It seems that you refer to point masses when volume distributions have to be considered. David David Jonsson, Sweden, phone callto:+46703000370 On Wed, Mar 3, 2010 at 4:42 PM, Stephen A. Lawrence sa...@pobox.com wrote: On 03/03/2010 10:27

Re: [Vo]:Fwd: Can retarded gravity be counteracted by tidal acceleration?

2010-03-03 Thread Stephen A. Lawrence
I don't really understand how tidal and retarded effects can cancel. Tidal effects are only detectable on extended bodies, and the tidal force generally (always?) has nonzero divergence. On the other hand, the retarded gravity effect typically manifests itself as a rotation of the acceleration

Re: [Vo]:Fwd: Can retarded gravity be counteracted by tidal acceleration?

2010-03-03 Thread Stephen A. Lawrence
On 03/03/2010 10:27 AM, Stephen A. Lawrence wrote: I don't really understand how tidal and retarded effects can cancel. Tidal effects are only detectable on extended bodies, and the tidal force generally (always?) has nonzero divergence. Actually I think that's wrong -- I don't think it's

[Vo]:Fwd: Can retarded gravity be counteracted by tidal acceleration?

2010-03-01 Thread David Jonsson
Hi My own posting today on Usenet. I would be glad if someone could help me with how to calculate this for some examples to see if there is any reason in it. David David Jonsson, Sweden, phone callto:+46703000370 -- Forwarded message -- From: David Jonsson