The gravitational constant, G, which governs the strength of gravitational interactions, is hard to measure accurately. Two independent determinations of G have been made that have the smallest uncertainties so far.
Li et al. (2018) Measurements of the gravitational constant using two independent methods: https://www.nature.com/articles/s41586-018-0431-5
Li et al. (2018) Measurements of the gravitational constant using two independent methods: https://www.nature.com/articles/s41586-018-0431-5
Gravity measured with record precision
nature.com
Ahaha. I remember when I was young and was measuring G with... ah, how do you call it. Чечевичный маятник. Exactly with this one and exactly in that institute : https://youtu.be/DoyyKODtvzo After I made concussions, the professor said that with such sort of conclusions i may lose possibility to leave my country :-))))5 j
Maybe the nature of gravity is still more uncertain than the method of measurement. It would be interesting to see if the measured G is the same when measured between uranium masses, and between lithium masses. With a bit of luck, both measured with the same method.4 j
