sentences:  Experiments involving pendulums continued to be performed in the first half of the 19th century.By the second half of the century, these were outperformed by repetitions of the Cavendish experiment, and the modern value of "G" (and hence, of the Earth mass) is still derived from high-precision repetitions of the Cavendish experiment.In 1821, Francesco Carlini determined a density value of ρ = through measurements made with pendulums in the Milan area.