Measurement of the Newtonian gravitational constant based on the principle of free fall  

作　　者：WANG Yong KE XiaoPing ZHANG WeiMin XU HouZe WANG HuBiao CHAI Hua 

机构地区：[1]Institute of Geodesy and Geophysics, Chinese Academy of Sciences, Wuhan 430077, China

出　　处：《Chinese Science Bulletin》2009年第6期1019-1025,共7页

基　　金：Supported by the National Basic Research Program of China (Grant No. 2003CB716300);Key Project of the Knowledge Innovation Program of the Chinese Academy of Sciences (Grant No. KZCX2-YW-125)

摘　　要：The Newtonian gravitational constant (G) is one of the fundamental physical constants. This paper in-troduces a method to determine the Newtonian gravitational constant based on the principle of free fall, through measuring the change of gravity from the disturbed mass with an FG5/112 absolute gravimeter. This method has good repeatability. The measurement precision can be improved by error control and a large number of experiments. The constant G is obtained by two experiments, and the measured value is (6.6665±0.0554)×10-11 m3/(kg·s2).The Newtonian gravitational constant （G） is one of the fundamental physical constants. This paper introduces a method to determine the Newtonian gravitational constant based on the principle of free fall, through measuring the change of gravity from the disturbed mass with an FG5/112 absolute gravimeter. This method has good repeatability. The measurement precision can be improved by error control and a large number of experiments. The constant G is obtained by two experiments, and the measured value is （6.6665±0.0554）×10^-11 m^3/（kg·s^2）.

关 键 词：牛顿万有引力常数 测量精度 跌落 自由 基础 绝对重力仪 基本物理常数 可重复性 

分 类 号：TB485.1[一般工业技术—包装工程] O411[理学—理论物理]