Submillimeter test of the gravitational inverse-square law: a search for "large" extra dimensions.

@article{Hoyle2001SubmillimeterTO,
  title={Submillimeter test of the gravitational inverse-square law: a search for "large" extra dimensions.},
  author={C. D. Hoyle and Ulrich Schmidt and Blayne Heckel and Eric George Adelberger and Jens H Gundlach and Daniel Kapner and H. Erik Swanson},
  journal={Physical review letters},
  year={2001},
  volume={86 8},
  pages={
          1418-21
        }
}
Motivated by higher-dimensional theories that predict new effects, we tested the gravitational 1/r(2) law at separations ranging down to 218 microm using a 10-fold symmetric torsion pendulum and a rotating 10-fold symmetric attractor. We improved previous short-range constraints by up to a factor of 1000 and find no deviations from Newtonian physics. 

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