↑ Encyclopædia Britannica 1910 p. 385 'The aim [of experiments like Cavendish's] may be regarded either as the determination of the mass of the Earth,...conveniently expressed...as its "mean density", or as the determination of the "gravitation constant", G'. Cavendish's experiment is generally described today as a measurement of G (Clotfelter 1987 p. 210).
↑ Many sources incorrectly state that this was the first measurement of G (or the Earth's density); for instance: Feynman, Richard P. (2013) [1963]. "7. The Theory of Gravitation". mainly mechanics, radiation and heat. The Feynman lectures on physics. Volume I. Pasadena, California: California Institute of Technology. 7–6 Cavendish’s experiment. ISBN9780465025626. สืบค้นเมื่อ December 9, 2013.There were previous measurements, chiefly Bouguer (1740) and Maskelyne (1774), but they were very inaccurate (Poynting 1894)(Encyclopædia Britannica 1910).
