Submillimeter test of the gravitational inverse-square law: a search for "large" extra dimensions.
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.
Hoyle
C D
CD
Department of Physics, University of Washington, Seattle 98195-1560, USA.
Schmidt
U
U
Heckel
B R
BR
Adelberger
E G
EG
Gundlach
J H
JH
Kapner
D J
DJ
Swanson
H E
HE
D006112:Gravitation