William John Macquorn Rankine (1853) "On the General Law of the Transformation of Energy," Proceedings of the Philosophical Society of Glasgow, vol. 3, no. 5, pages 276-280; reprinted in: (1) Philosophical Magazine, series 4, vol. 5, no. 30, pages 106-117 15 Nisan 2014 tarihinde Wayback Machine sitesinde arşivlendi. (February 1853); and (2) W. J. Millar, ed., Miscellaneous Scientific Papers: by W. J. Macquorn Rankine, ... (London, England: Charles Griffin and Co., 1881), part II, pages 203-208: "The law of the Conservation of Energy is already known—viz. that the sum of all the energies of the universe, actual and potential, is unchangeable."
William John Macquorn Rankine (1853) "On the General Law of the Transformation of Energy," Proceedings of the Philosophical Society of Glasgow, vol. 3, no. 5, pages 276-280; reprinted in: (1) Philosophical Magazine, series 4, vol. 5, no. 30, pages 106-117 15 Nisan 2014 tarihinde Wayback Machine sitesinde arşivlendi. (February 1853); and (2) W. J. Millar, ed., Miscellaneous Scientific Papers: by W. J. Macquorn Rankine, ... (London, England: Charles Griffin and Co., 1881), part II, pages 203-208: "The law of the Conservation of Energy is already known—viz. that the sum of all the energies of the universe, actual and potential, is unchangeable."
Janko, Richard (2004). "Empedocles, "On Nature""(PDF). Zeitschrift für Papyrologie und Epigraphik. Cilt 150. ss. 1-26. 9 Ağustos 2017 tarihinde kaynağından arşivlendi(PDF). Erişim tarihi: 20 Aralık 2020.
Janko, Richard (2004). "Empedocles, "On Nature""(PDF). Zeitschrift für Papyrologie und Epigraphik. Cilt 150. ss. 1-26. 9 Ağustos 2017 tarihinde kaynağından arşivlendi(PDF). Erişim tarihi: 20 Aralık 2020.
William John Macquorn Rankine (1853) "On the General Law of the Transformation of Energy," Proceedings of the Philosophical Society of Glasgow, vol. 3, no. 5, pages 276-280; reprinted in: (1) Philosophical Magazine, series 4, vol. 5, no. 30, pages 106-117 15 Nisan 2014 tarihinde Wayback Machine sitesinde arşivlendi. (February 1853); and (2) W. J. Millar, ed., Miscellaneous Scientific Papers: by W. J. Macquorn Rankine, ... (London, England: Charles Griffin and Co., 1881), part II, pages 203-208: "The law of the Conservation of Energy is already known—viz. that the sum of all the energies of the universe, actual and potential, is unchangeable."