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[gr-qc/0610028] A Solar System Test of Mach''s Principle wit

Posted: October 17 2006
by Garth Antony Barber
Does G vary with r because of Mach's principle?

Their result was that no significant evidence for the dependence was found.

Unless, that is, M also varies with G such that GM is constant.....
this variation (in G) is normally ’hidden’ by the compensating change in atomic masses that causes GM to be constant.