A determination of Newton´s gravitational constant using the MSL torsion balance

Author

Armstrong, T.R. ; Fitzgerald, M.P.

Author_Institution

Measure. Stand. Lab., Ind. Res. Ltd., Lower Hutt, New Zealand

fYear

1998

fDate

6-10 July 1998

Firstpage

143

Abstract

Summary form only given, as follows. We will describe the results of a new determination of the Newtonian gravitational constant (G) made since our last value reported at the 1994 CPEM. At the 1996 CEPM we reported a number of difficulties in completing the measurement in progress at that time. We have now solved all of these problems and at the time of writing believe that we will be in a position to report an improved value of G. The paper will briefly report the differences in the measurement since the last CPEM and present our latest result and its uncertainty.

Keywords

balances; compensation; electrometers; gravitational constant; measurement uncertainty; torsion; Newton´s gravitational constant determination; compensated torsion balance; electrometer; electrostatic torque; gravitational attraction; gravitationally induced torque; small mass system; uncertainty; Acceleration; Electrostatic measurements; Measurement standards; Noise measurement; Phase measurement; Position measurement; Time measurement; Torque measurement; Tungsten; Writing;

fLanguage

English

Publisher

ieee

Conference_Titel

Precision Electromagnetic Measurements Digest, 1998 Conference on

Conference_Location

Washington, DC, USA

Print_ISBN

0-7803-5018-9

Type

conf

DOI

10.1109/CPEM.1998.699826

Filename

699826