Comparison of value of Newtonian constant of gravitation G postulated in the paper "Simple relations between some properties of electron" and different measurements results

Value of Newtonian constant of gravitation G postulated in (2020-07-07 update: See the latest version Elementary Charge, Electron Rest Mass and Newtonian Constant of Gravitation.): 6.673 655 21 · 10⁻¹¹ m³/(kg·s²)

Selected 20-th century results of measurements of G and CODATA recommended values until 2014 compared to the postulated value (marked in yellow)

Modified picture from https://en.wikipedia.org/wiki/Gravitational_constant#/media/File:Gravitational_constant_historical.png

Cit. after Dbachmann (author of the original picture):

Timeline of measurements and recommended values for the gravitational constant, 1911-2014. Data points in red are recommended value based on a review of the entire evidence. Data points in blue are results of torsion balance experiments (Cavendish experiment). Data points in green are from other types of experiments (two with pendulums, one with a beam balance and one [2014] from atom interferometry). The 1911 value is from Poynting's article in Encyclopedia Britannica 1911 edition, it represents the best estimate made by Poynting at this time, but it essentially corresponds to Poynting's own result from 1891, which was the best available at that time. Only the upper half of Poynting's error bar is shown. Red values from 1969 onwards are the CODATA NIST recommended values. The image illustrates how all experiments since the 1980s have remained inside the uncertainty of the 1969 recommended value, but have failed to converge on any more accurate value in spite of the citation of very optimistic uncertainty intervals in some experiments

Selected measurement results from the last 25 years including puzzling 2018 results and their influence on CODATA-2018 recommended value of G, compared to the postulated value (marked in yellow)

Modified picture from https://phys.org/news/2018-08-ways-gravitational-constant.html

More information on 2018 measurements: Qing Li et al. Measurements of the gravitational constant using two independent methods, Nature (2018). DOI: 10.1038/s41586-018-0431-5

Comments to 2018 results - Gravitational-constant mystery deepens with new precision measurements: https://physicsworld.com/a/gravitational-constant-mystery-deepens-with-new-precision-measurements/