Quote:
Originally Posted by Robh
The push gravity model assumes an "ether" of randomly moving particles e.g. neutrinos. These particles exert pressure on bodies and the shielding of one body from another is what produces the gravitational effects. It is the physics of the push gravity model that lets it down ...
1. For it to work, particle collisions must be inelastic. Collisions of particles will result in excessive heating of bodies. An inexhaustible supply of particles are needed to maintain the ether.
2. Motions of bodies in the ether will result in frictional drag. This effect would reduce the distance between the Sun and the Earth.
3. Gravitational shielding, the basis of the theory, is inconsistent in that the shielding effects of many bodies does not produce the same gravitational forces as their overall mass implies.
4. Gravitational aberration occurs due to the finite speed of gravity. For example, as the Earth orbits the Sun, there is a time delay due to ether particles arriving from the Sun at older positions but not having arrived at newer positions. This acts to accelerate objects away from each other.
Regards, Rob
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Sorry to be so late in a further coment Rob but I have been socialising and stuff so I have not had much time to think..nonr really however as to point 3 I am surprised to hear you say there is a difference between shielding and convential mass related theroies in so far as I know of no experiment etc that expresses gravity as a form of shielding and givers data based on that approach... I doubt such figures are really available and whoever possed them in the first instzance I would like to visit.
Let me digest point 4 for a little while longer.
Thanks for pointing out concerns irrespective of the answers being correct it makes me think more about it all.
alex