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).
Clotfelter 1987, p. 210
อ้างอิง
Boys, C. Vernon (1894). "On the Newtonian constant of gravitation". Nature. 50 (1292): 330–4. Bibcode:1894Natur..50..330.. doi:10.1038/050330a0.
Cavendish, Henry (1798). "Experiments to Determine the Density of the Earth". ใน MacKenzie, A. S. (บ.ก.). Scientific Memoirs Vol.9: The Laws of Gravitation. American Book Co. (ตีพิมพ์ 1900). pp. 59–105. Online copy of Cavendish's 1798 paper, and other early measurements of gravitational constant.
Clotfelter, B. E. (1987). "The Cavendish experiment as Cavendish knew it". American Journal of Physics. 55 (3): 210–213. Bibcode:1987AmJPh..55..210C. doi:10.1119/1.15214. Establishes that Cavendish didn't determine G.
Falconer, Isobel (1999). "Henry Cavendish: the man and the measurement". Measurement Science and Technology. 10 (6): 470–477. Bibcode:1999MeScT..10..470F. doi:10.1088/0957-0233/10/6/310.
"Gravitation Constant and Mean Density of the Earth". Encyclopædia Britannica, 11th Ed. 12. The Encyclopædia Britannica Co. 1910. pp. 385–389.
Hodges, Laurent (1999). "The Michell-Cavendish Experiment, faculty website, Iowa State Univ". สืบค้นเมื่อ 2007-08-28. Discusses Michell's contributions, and whether Cavendish determined G.
Lally, Sean P. (1999). "Henry Cavendish and the Density of the Earth". The Physics Teacher. 37 (1): 34–37. Bibcode:1999PhTea..37...34L. doi:10.1119/1.880145.
McCormmach, Russell (1996). Cavendish. Philadelphia, Pennsylvania: American Philosophical Society. ISBN0-87169-220-1. Unknown parameter |coauthors= ignored (|author= suggested) (help)
Poynting, John H. (1894). The Mean Density of the Earth: An essay to which the Adams prize was adjudged in 1893. London: C. Griffin & Co. Review of gravity measurements since 1740.
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