Quote:
Originally Posted by renormalised
That makes no sense, based just on simple observation. If you have two objects "pushing" on one another i.e. there's a force mitigating the push between each of the objects, how can you therefore have an attraction??. You can't have a shielding effect simply because the force of the push must, by definition, be coming from everywhere surrounding each object. There's nowhere for any "shielding" to occur. You are, by invoking a shielding effect, saying that your gravity is essentially a point source effect that is radiated away from the surface of your objects at different intensities, depending on their location, and in a specific direction.
There's absolutely no observational evidence for that, anywhere in physical reality. If that were the case, not only would the universe be littered with all sorts of weird gravitational point sources and anomalies, but nothing would appear as it does. In actual fact, the universe wouldn't exist....it would've collapsed in on itself before it even got started.
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Its is not the objects that push Carl it is all of space that pushes.
I will try to explain how I see it.
If the push comes from everywhere as I suspect then any two objects will shield each other..they dont push each other the push is all over but the push will be shielded by each object on the other...draw two circles and lines coming from the edge of the page in fact lines everywhere but if the line meets either circle stop it there..what you will draw will show a region between the two circles that has less lines... it is not a vacuum but that is a simple way to visualise the effect I suggest..the shielded regions will have less flow and the matter will tend to move there.. in a more or less choice of taking the path of less resistence.
Sorry that I cant offer a more descriptive and graspable view but forget entirely that each object pushes or interacts with the other... it is space its flow (and lack of it in the shielded region) that pushes them together.
ANyways I have to go and thank you all very much for your tolerance, understanding and wonderfully helpful input...
alex
alex