A NEW METHOD FOR TESTING NEWTON GRAVITATIONAL LAW

被引:9
作者
SCHURR, J [1 ]
KLEIN, N [1 ]
MEYER, H [1 ]
PIEL, H [1 ]
WALESCH, H [1 ]
机构
[1] BERG UNIV WUPPERTAL,FACHBEREICH PHYS,W-5600 WUPPERTAL 1,GERMANY
关键词
D O I
10.1088/0026-1394/28/5/004
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
We report on a new experimental method for determining the gravitational force of a laboratory test mass on a Fabry-Perot microwave resonator. The resonator consists of two Fabry-Perot mirrors suspended as pendulums. Changes of 2 x 10(-11) m in the pendulum separation can be resolved as a shift of the resonance frequency of the resonator. The limit corresponds to an acceleration of 7 x 10(-11) ms-2 of one mirror with respect to the other. In a first experiment we have measured the gravitational acceleration generated by a 125 kg test mass as a function of distance in the range 10 cm to 15 cm and tested Newton's gravitational law with an accuracy of 0,6%. No deviation is found and the gravitational constant G is determined with an accuracy of 1%.
引用
收藏
页码:397 / 404
页数:8
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