Test of the equivalence principle using a rotating torsion balance.

@article{Schlamminger2008TestOT,
  title={Test of the equivalence principle using a rotating torsion balance.},
  author={Stephan Schlamminger and K-Y Choi and T. A. Wagner and Jens H Gundlach and Eric George Adelberger},
  journal={Physical review letters},
  year={2008},
  volume={100 4},
  pages={
          041101
        }
}
We used a continuously rotating torsion balance instrument to measure the acceleration difference of beryllium and titanium test bodies towards sources at a variety of distances. Our result Deltaa(N),(Be-Ti)=(0.6+/-3.1)x10(-15) m/s2 improves limits on equivalence-principle violations with ranges from 1 m to infinity by an order of magnitude. The Eötvös parameter is eta(Earth,Be-Ti)=(0.3+/-1.8)x10(-13). By analyzing our data for accelerations towards the center of the Milky Way we find equal… 

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