A value for G from beam-balance experiments

Authors
Nolting, F Schurr, J Schlamminger, S Kundig, W
Citation
F. Nolting et al., A value for G from beam-balance experiments, MEAS SCI T, 10(6), 1999, pp. 487-491
Citations number
10
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences","Instrumentation & Measurement
Journal title
MEASUREMENT SCIENCE & TECHNOLOGY
ISSN journal
09570233 → ACNP
Volume
10
Issue
6
Year of publication
1999
Pages
487 - 491
Database
ISI
SICI code
0957-0233(199906)10:6<487:AVFGFB>2.0.ZU;2-S
Abstract
A high-precision measurement of the Newtonian gravitational constant G by m eans of a beam balance is being carried out at the University of Zurich. We have made test measurements in which the gravitational force of 10(3) kg o f water was used and G was determined with a relative standard uncertainty of 220 x 10(-6). Currently, measurements with 13.5 x 10(3) kg of mercury ar e in progress. These measurements are not completed yet, but a preliminary result is presented.