Abstract
We determined the Newtonian constant of gravitation by interferometrically measuring the change in spacing between two free-hanging pendulum masses caused by the gravitational field from large tungsten source masses. We find a value for of . This value is in good agreement with the 1986 Committee on Data for Science and Technology (CODATA) value of [Rev. Mod. Phys. 59, 1121 (1987)] but differs from some more recent determinations as well as the latest CODATA recommendation of [Rev. Mod. Phys. 80, 633 (2008)].
- Received 22 June 2010
DOI:https://doi.org/10.1103/PhysRevLett.105.110801
© 2010 The American Physical Society