I am wondering if there has been an experimental confirmation of Mach principle?
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Well, one of the formulations of Mach principle is as follows : " Events in local inertial frame are dependent on mass distribution of distant stars ."
3.
To do this, Sachs found, requires ( 2 ) generalizing Einstein's Mach principle, positing that all manifestations of matter, not only inertial mass, derive from the interaction of matter.
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But because the principle is so vague, many distinct statements can be ( and have been ) made which would qualify as a "'Mach principle "', and some of these are false.
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Some have interpreted the G�del universe as a counterexample to Einstein's hopes that general relativity should exhibit some kind of Mach principle, citing the fact that the matter is rotating ( world lines twisting about each other ) in a manner sufficient to pick out a preferred direction, although with no distinguished axis of rotation.
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Others take " Mach principle " to mean some physical law tying the definition of nonspinning inertial frames at each event to the global distribution and motion of matter everywhere in the universe, and say that because the nonspinning inertial frames are precisely tied to the rotation of the dust in just the way such a Mach principle would suggest, this model " does " accord with Mach's ideas.
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Others take " Mach principle " to mean some physical law tying the definition of nonspinning inertial frames at each event to the global distribution and motion of matter everywhere in the universe, and say that because the nonspinning inertial frames are precisely tied to the rotation of the dust in just the way such a Mach principle would suggest, this model " does " accord with Mach's ideas.
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From the article, " . . . because the principle is so vague, many distinct statements can be ( and have been ) made which would qualify as a Mach principle, and some of these are false . " On the other hand, general relativity was to a certain extent inspired by Mach's principle, although it isn't 100 % compatible with it, and general relativity certainly is precise enough to be testable; see Tests of general relativity . talk ) 02 : 56, 3 July 2014 ( UTC)
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