关键词: 万有引力常数G/
精密测量/
扭秤周期法/
角加速度反馈法
English Abstract
Progress on the precision measurement of the Newtonian gravitational constant G
Liu Jian-Ping1,Wu Jun-Fei1,
Li Qing1,
Xue Chao2,
Mao De-Kai1,
Yang Shan-Qing1,
Shao Cheng-Gang1,
Tu Liang-Cheng1,2,
Hu Zhong-Kun1,
Luo Jun1,2
1.MOE Key Laboratory of Fundamental Physical Quantities Measurements, Hubei Key Laboratory of Gravitation and Quantum Physics, School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China;
2.TianQin Research Center for Gravitational Physics, Sun Yat-sen University, Zhuhai 519082, China
Fund Project:Project supported by the Major Research Plan of the National Natural Science Foundation of China (Grant No. 91536223) and the National Basic Research Program of China (Grant No. 2010CB832801).Received Date:01 August 2018
Accepted Date:10 August 2018
Published Online:20 August 2019
Abstract:The Newtonian gravitational constant G is the first fundamental physics constant introduced by human beings. It plays an important role in many fields, such as theoretical physics, astrophysics, and geophysics. Its precision measurement and related research is of great significance to the whole experimental physics. However, the measuring accuracy of G is the worst among all fundamental physical constants, which reflects the great complexity and difficulty in determining G. This paper briefly reviews the history of G measurement, and also introduces the current research progress in this field by a summary of the recent three precision measurements of G. At the end of the paper, the latest developments of the G measurement in the center of gravitational experiments at Huazhong University of Science and Technology are introduced.
Keywords: Newtonian gravitational constant G/
precision measurement/
time-of-swing method/
angular acceleration feedback method
