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ThatБЂ™s just some of it. According to the science historian J. G. Crowther, he also foreshadowed БЂњthe work of Kelvin and G. H. Darwin on the effect of tidal friction on slowing the rotation of the earth, and LarmorБЂ™s discovery, published in 1915, on the effect of local atmospheric cooling . . . the work of Pickering on freezing mixtures, and some of the work of Rooseboom on heterogeneous equilibria.БЂ«Finally, he left clues that led directly to the discovery of the group of elements known as the noble gases, some of which are so elusive that the last of them wasnБЂ™t found until 1962. But our interest here is in CavendishБЂ™s last known experiment when in the late summer of 1797, at the age of sixty-seven, he turned his attention to the crates of equipment that had been left to him-evidently out of simple scientific respect-by John Michell. When assembled, MichellБЂ™s apparatus looked like nothing so much as an eighteenth-century version of a Nautilus weight-training machine. It incorporated weights, counterweights, pendulums, shafts, and torsion wires ...»