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
fDate :
June 27 1994-July 1 1994
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;
Conference_Titel :
Precision Electromagnetic Measurements, 1994. Digest., 1994 Conference on
Conference_Location :
Boulder, CO, USA
Print_ISBN :
0-7803-1984-2
DOI :
10.1109/CPEM.1994.333308
