Absolute measurement of the Newtonian force and a determination ofG
- 1 January 1999
- journal article
- Published by IOP Publishing in Measurement Science and Technology
- Vol. 10 (6) , 492-494
- https://doi.org/10.1088/0957-0233/10/6/313
Abstract
We present the status and preliminary results of the Wuppertal gravitational experiment which is based on a microwave resonator. The gravitational force of two test masses acting on the resonator is measured as a function of distance. From new data taken recently we determine the gravitational constant G and test Newton's inverse square law in a distance range between 0.7 m and 2.2 m. From our measurements we obtain a preliminary value for G = 6.6735 × 10-11 m3 kg-1 s-2 with an uncertainty of 432 ppm dominated by systematic considerations.Keywords
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