Chr. Huygens, Traité de la Lumière (drafted 1678; published in Leyden by Van der Aa, 1690), translated by Silvanus P. Thompson as Treatise on Light (London: Macmillan, 1912; Project Gutenberg edition, 2005), с. 19.
A. Fresnel, „Mémoire sur la diffraction de la lumière“ (deposited 1818, „crowned“ 1819), in Oeuvres complètes (Paris: Imprimerie impériale, 1866–70), vol.1, pp. 247–363; partly translated as „Fresnel's prize memoir on the diffraction of light“, in H. Crew (ed.), The Wave Theory of Light: Memoirs by Huygens, Young and Fresnel, American Book Co., 1900, archive.org/details/wavetheoryofligh00crewrich, pp. 81–144. (Not to be confused with the earlier work of the same title in Annales de Chimie et de Physique, 1:238–81, 1816.)
gutenberg.org
Chr. Huygens, Traité de la Lumière (drafted 1678; published in Leyden by Van der Aa, 1690), translated by Silvanus P. Thompson as Treatise on Light (London: Macmillan, 1912; Project Gutenberg edition, 2005), с. 19.
