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Newsgroups: sci.physics
From: Phineas T Puddleduck <phineaspuddled...@googlemail.com>
Date: Sun, 17 Dec 2006 23:30:39 +0000
Local: Mon, Dec 18 2006 1:30 am
Subject: Re: The Problems of SR/GR
In article <1166397865.220531.10...@j72g2000cwa.googlegroups.com>,
"Colin" <colinkee...@yahoo.com> wrote: GR effects re orbital motion get more and more important as you get > Why would GR be relevant in our own solar system (the famous success of > GR to explain Mercury's precession (is that the right word?)), but not > relevant for describing the motion of galaxies. Of course, I realize > Newtonian physics does almost perfectly describe our solar system and > GR is only needed to explain small discrepancies. The large > discrepancie between GR or Netonian gravity and the actual motion of > Galaxies is obviously more a problem with our understanding of the > structure (and content) of galaxies, than of our understanding of > gravity. closer to the (large) orbital mass or more precisely as the orbital radius gets close to 2M (in geometric units). Mercury's deviation was only 41 arc seconds per century for example - as it was the closest planet to the sun. Even with the supermassive black hole extrapolated in the centre of the -- Just \int_0^\infty du it! -- You must Sign in before you can post messages.
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