English
 
通知: ·180918 Tan Ting Rui博士学术...    ·180904 新生培训    ·180831 Hendricks博士学术报...    ·180828 肖智博士学术报告    ·180820 苗子博博士学术报告   
 
 


  发表论文

  研究小组
  ·2013年5月小组照片
·2014年9月小组照片
  研究方向
  科研项目
  研究成果
  ·发表论文
·获奖
·专利
  最新进展

  文章统计

  2014年 (15)
  2013年 (8)
  2012年 (11)
 

发表论文 您的位置是: 首页 > 科学研究 > 研究成果 > 发表论文 > 正文

 

2018 Measurements of the gravitational constant using two independent methods

发布时间:2018-08-31          来源:           浏览次数:

Measurements of the gravitational constant using two independent methods

Qing Li,Chao Xue,Jian-Ping Liu,Jun-Fei Wu,Shan-Qing Yang,Cheng-Gang Shao,Li-Di Quan,Wen-Hai Tan,Liang-Cheng Tu,Qi Liu,Hao Xu,Lin-Xia Liu,Qing-Lan Wang,Zhong-Kun Hu,Ze-Bing Zhou,Peng-Shun Luo,Shu-Chao Wu,Vadim MilyukovJun Luo

Naturevolume (Article) 560, pages582–588 (2018)

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 that are unlikely to involve the same systematic effects. Here we report two independent determinations of G using torsion pendulum experiments with the time-of-swing method and the angular-acceleration-feedback method. We obtain G values of 6.674184 × 10−11 and 6.674484 × 10−11 cubic metres per kilogram per second squared, with relative standard uncertainties of 11.64 and 11.61 parts per million, respectively. These values have the smallest uncertainties reported until now, and both agree with the latest recommended value within two standard deviations.

https://www.nature.com/articles/s41586-018-0431-5

DOI: https://doi.org/10.1038/s41586-018-0431-5


Publication history: Received: 29 April 2018; Accepted: 05 July 2018; Published:29 August 2018

Authors:  These authors contributed equally: Qing Li, Chao Xue, Jian-Ping Liu, Jun-Fei Wu

Affiliations:

  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, China

    • Qing Li, Jian-Ping Liu, Jun-Fei Wu, Shan-Qing Yang, Cheng-Gang Shao, Wen-Hai Tan, Liang-Cheng Tu, Hao Xu, Zhong-Kun Hu, Ze-Bing Zhou, Peng-Shun Luo, Shu-Chao Wu& Jun Luo

  2. TianQin Research Center for Gravitational Physics, Sun Yat-sen University, Zhuhai, China

    • Chao Xue, Liang-Cheng Tu, Qi Liu& Jun Luo

  3. School of Physics and Astronomy, Sun Yat-sen University, Zhuhai, China

    • Chao Xue, Qi Liu& Jun Luo

  4. College of Engineering, Huzhou University, Huzhou, China

    • Li-Di Quan

  5. Teaching Research and Assessment Center, Henan Institute of Technology, Xinxiang, China

    • Lin-Xia Liu

  6. School of Science, Hubei University of Automotive Technology, Shiyan, China

    • Qing-Lan Wang

  7. Sternberg Astronomical Institute, Moscow State University, Moscow, Russia

    • Vadim Milyukov




上一篇:2018 Development of low phase noise microwave frequency synthesizers for reducing Dick effect of Cs fountain clocks
下一篇:2018 Direct generation of a narrow-linewidth Laguerre–Gaussian vortex laser in a monolithic nonplanar oscillator
 
 
 

Copyright (C) 华中科技大学引力中心 地址:湖北省武汉市洪山区珞喻路1037号 邮编:430074