DocumentCode
2184801
Title
A measurement of Newton´s gravitational constant
Author
Fitzgerald, M.P. ; Armstrong, T.R.
Author_Institution
Meas. Standards Lab., New Zealand Inst. of Ind. Res. & Dev., Lower Hutt, New Zealand
fYear
1994
fDate
June 27 1994-July 1 1994
Firstpage
19
Lastpage
20
Abstract
We have measured the Newtonian gravitational constant using a compensated torsion balance in which the gravitational torque is balanced by an electrostatic torque from an electrometer. The electrometer is calibrated by accelerating the whole apparatus. Our result and uncertainties are discussed.<>
Keywords
balances; calibration; charge measurement; electrometers; gravitational constant; gravitational experiments; torsion; voltage measurement; Newtonian gravitational constant; compensated torsion balance; electrometer; electrostatic torque; gravitational torque; uncertainties; Acceleration; Calibration; Control systems; Electrostatic measurements; Measurement standards; Pi control; Proportional control; Torque measurement; Voltage; Weight control;
fLanguage
English
Publisher
ieee
Conference_Titel
Precision Electromagnetic Measurements, 1994. Digest., 1994 Conference on
Conference_Location
Boulder, CO, USA
Print_ISBN
0-7803-1984-2
Type
conf
DOI
10.1109/CPEM.1994.333308
Filename
333308
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