Quote:
Originally Posted by Jeff
My understanding is that the origin of Newton's gravitation formula was by fitting to direct terrestrial and planetary observations. The implication of the formula seems to be that the effect weakens as you move further away from a mass .... similar to moving away from a light source, where measured light intensity seems to diminish as it is distributed over an ever increasing spherical area..
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Yes, this seems very intuitive..
However, the gravity works on VERY small particles, infinitely small - electron for example. Or quark (which still feels like mathematical construct to explain observed phenomena). So, how screening works when the size of the screen is infinitely small, and yet the gravitational force may be VERY strong (which will be obvious once the BH's existence is confirmed. BTW, see this link:
http://www.universetoday.com/2008/09...ys-black-hole/).
The screening model may result in the same form of mathematical expression to describe some , most obvious aspects of certain phenomenon, but, to have the theory, ALL KNOWN cases must be covered... otherwise the theory is not the theory, but just interesting mind game. And in this case, we do not have this coverage.
Also, those "Pushingtons" must be very small, infinitely small in fact, to avoid collisions between themselves (because this is what Alex insists on: mechanical explanation of gravity).