# Measurements of the gravitational constant using two independent methods

@article{Li2018MeasurementsOT, title={Measurements of the gravitational constant using two independent methods}, author={Qing Li and Chao Xue and Jian-Ping Liu and Jun-fei Wu and Shanqing Yang and Cheng-Gang Shao and Li-Di Quan and Wen-Hai Tan and Liang-Cheng Tu and Qi Liu and Hao Xu and Linxia Liu and Qing-Lan Wang and Zhongkun Hu and Zebing Zhou and Pengshun Luo and Shuchao Wu and Vadim Milyukov and Jun Luo}, journal={Nature}, year={2018}, volume={560}, pages={582-588} }

The Newtonian gravitational constant, G, is one of the most fundamental constants of nature, but we still do not have an accurate value for it. Despite two centuries of experimental effort, the value of G remains the least precisely known of the fundamental constants. A discrepancy of up to 0.05 per cent in recent determinations of G suggests that there may be undiscovered systematic errors in the various existing methods. One way to resolve this issue is to measure G using a number of methods…

## 101 Citations

### Precision measurement of the Newtonian gravitational constant

- PhysicsNational science review
- 2020

The history of the G measurement is briefly reviewed, and eleven values of G adopted in CODATA 2014 after 2000 are introduced and the latest two values published in 2018 are introduced using two independent methods.

### Progress in Precise Measurements of the Gravitational Constant

- PhysicsAnnalen der Physik
- 2019

The Newtonian gravitational constant G, which is one of the earliest fundamental constants introduced by human beings, plays an important role in cosmology, astrophysics, geophysics, metrology, and…

### New determination of the gravitational constant G

- PhysicsNational science review
- 2020

A new and so far the most precise determination of the gravitational constant G has beenmade by JunLuo and colleagues at the Huazhong University of Science and Technology (HUST) [1]. The combination…

### Towards a Better Determination of Big G

- Physics
- 2019

Newtonian gravitational constant G is the first proposed and measured universal constant [1]. However, after over two hundred years of its first measurement by Cavendish, G is poorly determined in…

### Measurement of the Newtonian constant of gravitation G by precision displacement sensors

- PhysicsClassical and Quantum Gravity
- 2020

The Newtonian constant of gravitation G historically has the largest relative uncertainty over all other fundamental constants with some discrepancies in values between different measurements. We…

### The Newtonian Gravitational Constant in Fermi Theory with Weak Radiative Corrections

- Physics
- 2019

The Newtonian gravitational constant G is still not known to high levels of accuracy after approximately two hundred years of experimental work. This presents a problem since G is one of the most…

### Precise Measurements of the Gravitational Constant: Revaluation by the Information Approach

- PhysicsJournal of Applied Mathematics and Physics
- 2019

The gravitational constant discovered by Newton is still measured with a relative uncertainty that is several orders of magnitude larger than the relative uncertainty of other fundamental constants.…

### Additional Solar System Gravitational Anomalies

- Physics, GeologySymmetry
- 2021

This article is motivated by uncertainty in experimental determinations of the gravitational constant, G, and numerous anomalies of up to 0.5 percent in Newtonian gravitational force on bodies within…

### Shades of dark uncertainty and consensus value for the Newtonian constant of gravitation

- MathematicsMetrologia
- 2019

The Newtonian constant of gravitation, G, stands out in the landscape of the most common fundamental constants owing to its surprisingly large relative uncertainty, which is attributable mostly to…

### The Newtonian Gravitational Constant G Interpreted as the Gravitational Inertia of Vacuum - G0. How to Arrange Twelve Precise Experimental Determinations of GZ in their Spread 500 ppm?

- Physics
- 2021

We have newly interpreted the Newtonian gravitational constant G as the gravitational inertia of vacuum G0. The source mass inserted into vacuum decreases this value G0 to GZ on the dependence of the…

## References

SHOWING 1-10 OF 59 REFERENCES

### Invited Review Article: Measurements of the Newtonian constant of gravitation, G

- PhysicsThe Review of scientific instruments
- 2017

A large array of different instruments ranging from the simple torsion balance to the sophisticated atom interferometer can be used to determine G, which is several orders of magnitudes greater than the relative uncertainties of other fundamental constants.

### Fundamental constants: A cool way to measure big G

- PhysicsNature
- 2014

A high-precision measurement of G is carried out using quantum interferometry with laser-cooled atoms, an experimental approach that differs radically from previous determinations, obtaining a value with a precision approaching that of the traditional measurements, and with prospects for considerable further improvement.

### Precision measurement of the Newtonian gravitational constant using cold atoms

- PhysicsNature
- 2014

The precise determination of G is reported using laser-cooled atoms and quantum interferometry to identify the systematic errors that have proved elusive in previous experiments, thus improving the confidence in the value of G.

### Bestimmung der Newtonschen Gravitationskonstanten G

- Physics
- 2002

The value of the Newtonian Gravitational constant G has interested physicists for more than
200 years and except for the speed of light, it has the longest history of measurements. But
although G…

### The Newtonian Gravitational Constant: An index of measurements

- Physics
- 1987

The Newtonian Gravitational Constant, G, has probably been measured more often but, interestingly, with less precision than any other physical constant of fundamental importance. In an effort that…

### Preliminary determination of Newtonian gravitational constant with angular acceleration feedback method

- PhysicsPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
- 2014

The apparatus has been built, and preliminary measurement performed, to test all aspects of the experimental design, particularly the feedback function, and the experimental results show that the residual twist angle of the torsion pendulum at the signal frequency introduces 0.4 ppm to the value of G.

### Improved determination of G using two methods.

- GeologyPhysical review letters
- 2013

The apparatus has been completely rebuilt and extensive tests carried out on the key parameters needed to produce a new value for G, which confirms the discrepancy of the results with the CODATA value and highlights the wide divergence that now exists in recent values of G.

### The BIPM measurements of the Newtonian constant of gravitation, G

- PhysicsPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
- 2014

This paper is a complement to the two short papers published in 2001 and 2013 and includes more detailed descriptions of certain key parameters that enter into the determination of G.

### Simple pendulum determination of the gravitational constant.

- PhysicsPhysical review letters
- 2010

We determined the Newtonian constant of gravitation G by interferometrically measuring the change in spacing between two free-hanging pendulum masses caused by the gravitational field from large…

### Survey of fundamental physical constants and measurements of the Newtonian constant of gravitation

- Physics, Education
- 2014

According to incomplete statistics, there are more than 160 fundamental physical constants, covering all fields of physics. Since the Committee on Data for Science and Technology of the International…