Mohr, D.B. in 1969.In 2000, Gundlach et al. Gravitational Constant, Newtonian Parameter of Gravitation, Khromatic Theory, CODATA 1. MOE Key Laboratory of Fundamental Physical Quantities Measurement & Hubei Key Laboratory of Gravitation and Quantum Physics, PGMF and School of Physics, Huazhong University of Science and Technology, Wuhan, 430074 P. R. ChinaMOE Key Laboratory of Fundamental Physical Quantities Measurement & Hubei Key Laboratory of Gravitation and Quantum Physics, PGMF and School of Physics, Huazhong University of Science and Technology, Wuhan, 430074 P. R. ChinaMOE Key Laboratory of Fundamental Physical Quantities Measurement & Hubei Key Laboratory of Gravitation and Quantum Physics, PGMF and School of Physics, Huazhong University of Science and Technology, Wuhan, 430074 P. R. ChinaTianQin Research Center for Gravitational Physics and School of Physics and Astronomy, Sun Yat‐sen University (Zhuhai Campus), Zhuhai, 519082 P. R. ChinaMOE Key Laboratory of Fundamental Physical Quantities Measurement & Hubei Key Laboratory of Gravitation and Quantum Physics, PGMF and School of Physics, Huazhong University of Science and Technology, Wuhan, 430074 P. R. ChinaMOE Key Laboratory of Fundamental Physical Quantities Measurement & Hubei Key Laboratory of Gravitation and Quantum Physics, PGMF and School of Physics, Huazhong University of Science and Technology, Wuhan, 430074 P. R. ChinaMOE Key Laboratory of Fundamental Physical Quantities Measurement & Hubei Key Laboratory of Gravitation and Quantum Physics, PGMF and School of Physics, Huazhong University of Science and Technology, Wuhan, 430074 P. R. ChinaTianQin Research Center for Gravitational Physics and School of Physics and Astronomy, Sun Yat‐sen University (Zhuhai Campus), Zhuhai, 519082 P. R. ChinaMOE Key Laboratory of Fundamental Physical Quantities Measurement & Hubei Key Laboratory of Gravitation and Quantum Physics, PGMF and School of Physics, Huazhong University of Science and Technology, Wuhan, 430074 P. R. ChinaMOE Key Laboratory of Fundamental Physical Quantities Measurement & Hubei Key Laboratory of Gravitation and Quantum Physics, PGMF and School of Physics, Huazhong University of Science and Technology, Wuhan, 430074 P. R. ChinaTianQin Research Center for Gravitational Physics and School of Physics and Astronomy, Sun Yat‐sen University (Zhuhai Campus), Zhuhai, 519082 P. R. ChinaMOE Key Laboratory of Fundamental Physical Quantities Measurement & Hubei Key Laboratory of Gravitation and Quantum Physics, PGMF and School of Physics, Huazhong University of Science and Technology, Wuhan, 430074 P. R. ChinaMOE Key Laboratory of Fundamental Physical Quantities Measurement & Hubei Key Laboratory of Gravitation and Quantum Physics, PGMF and School of Physics, Huazhong University of Science and Technology, Wuhan, 430074 P. R. ChinaMOE Key Laboratory of Fundamental Physical Quantities Measurement & Hubei Key Laboratory of Gravitation and Quantum Physics, PGMF and School of Physics, Huazhong University of Science and Technology, Wuhan, 430074 P. R. ChinaTianQin Research Center for Gravitational Physics and School of Physics and Astronomy, Sun Yat‐sen University (Zhuhai Campus), Zhuhai, 519082 P. R. ChinaMOE Key Laboratory of Fundamental Physical Quantities Measurement & Hubei Key Laboratory of Gravitation and Quantum Physics, PGMF and School of Physics, Huazhong University of Science and Technology, Wuhan, 430074 P. R. ChinaMOE Key Laboratory of Fundamental Physical Quantities Measurement & Hubei Key Laboratory of Gravitation and Quantum Physics, PGMF and School of Physics, Huazhong University of Science and Technology, Wuhan, 430074 P. R. ChinaMOE Key Laboratory of Fundamental Physical Quantities Measurement & Hubei Key Laboratory of Gravitation and Quantum Physics, PGMF and School of Physics, Huazhong University of Science and Technology, Wuhan, 430074 P. R. ChinaTianQin Research Center for Gravitational Physics and School of Physics and Astronomy, Sun Yat‐sen University (Zhuhai Campus), Zhuhai, 519082 P. R. ChinaMOE Key Laboratory of Fundamental Physical Quantities Measurement & Hubei Key Laboratory of Gravitation and Quantum Physics, PGMF and School of Physics, Huazhong University of Science and Technology, Wuhan, 430074 P. R. ChinaMOE Key Laboratory of Fundamental Physical Quantities Measurement & Hubei Key Laboratory of Gravitation and Quantum Physics, PGMF and School of Physics, Huazhong University of Science and Technology, Wuhan, 430074 P. R. ChinaTianQin Research Center for Gravitational Physics and School of Physics and Astronomy, Sun Yat‐sen University (Zhuhai Campus), Zhuhai, 519082 P. R. ChinaUse the link below to share a full-text version of this article with your friends and colleagues.

which has a certain amount that is equivalent to a value of 5.325×10 and that’s a square value of the fine-structure Reproduced with permission.The schematic diagram of the time‐of‐swing method at HUST.The two apparatus in HUST‐18 with the time of swing method.In 1996, Gundlach et al.

The second method in BIPM‐14 is the electrostatic compensation method, which is also performed with a torsion pendulum but more complex. first published their measurement result of In BIPM‐14, the free deflection method and the electrostatic compensation method gave Atom interferometry developed rapidly since Steven Chu et al. Another advantage of the time‐of‐swing method is that the differential measurement mode of the “near” and “far” configurations can reduce or eliminate the influence of many common interference factors, such as the effect of the lab‐fixed background gravitation.Converting the measurand into oscillation frequencies brings many benefits, but since the oscillation frequency is sensitive to the spring constant of the torsion fiber, the properties of fiber will introduce some systematic errors, such as thermoelasticity, nonlinearity, anelasticity, and so on. Mainly from “CODATA Recommended Values of the Fundamental Physical Constants: 2018,” E. Tiesinga, D.B.