The Cavendish experiment was the first experiment to measure gravity between masses in the laboratory. The experiment has been repeated numerous times over two centuries with consistent results. Many other types of experiments also confirmed it.
Flat-Earthers incorrectly claim the Cavendish experiment has never been reproduced. They focus solely on the original experiment to discredit it. In reality, there are far too many repeats of the experiment. To discredit the experiment, they have to address all and each of the repeats of the experiment.
The experiments listed in the illustration are research-grade experiments. However, the Cavendish experiment is also simple enough to be a very common experiment performed in schools and universities. It is probably safe to say that the Cavendish experiment is repeated weekly, maybe even daily.
References
- Gravitational constant – Wikipedia
- File:Gravitational constant historical.png – Wikimedia Commons
- Recent measurements of the gravitational constant as a function of time – Schlamminger
- Proceedings, Volume 14, page 357 – Royal Institution of Great Britain
- The Laws of Gravitation, page 143-144 – Mackenzie
- The Mean Density of the Earth – Poynting
