Phys. Rev. Lett. 89, 161102 (2002) [4 pages]Determination of the Gravitational Constant with a Beam BalanceReceived 26 July 2002; published 30 September 2002 The Newtonian gravitational constant G was determined by means of a novel beam-balance experiment with an accuracy comparable to that of the most precise torsion-balance experiments. The gravitational force of two stainless steel tanks filled with 13 521 kg mercury on 1.1 kg test masses was measured using a commercial mass comparator. A careful analysis of the data and the experimental error yields G=6.674 07(22)×10-11 m3 kg-1 s-2. This value is in excellent agreement with most values previously obtained with different methods. © 2002 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.89.161102
DOI:
10.1103/PhysRevLett.89.161102
PACS:
04.80.–y, 06.20.Jr
See AlsoReply: T. Datta, Ming Yin, Andreea Dimofte, M. Bleiweiss, A. Lungu, Jafar Amirzadeh, and W. E. Sharp, Tidal Effects on Gravity Experiments with a Balance, Phys. Rev. Lett. 91, 109001 (2003). Reply: W. Kündig and St. Schlamminger, Kündig and Schlamminger Reply:, Phys. Rev. Lett. 91, 109002 (2003). |
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.