In mathematics, Fresnel's wave surface, found by Augustin-Jean Fresnel in 1822, is a quartic surface describing the propagation of light in an optically biaxial crystal. Wave surfaces are special cases of tetrahedroids which are in turn special cases of Kummer surfaces. In projective coordinates (w:x:y:z) the wave surface is given by
a 2 x 2 x 2 + y 2 + z 2 − a 2 w 2 + b 2 y 2 x 2 + y 2 + z 2 − b 2 w 2 + c 2 z 2 x 2 + y 2 + z 2 − c 2 w 2 = 0 {\displaystyle {\frac {a^{2}x^{2}}{x^{2}+y^{2}+z^{2}-a^{2}w^{2}}}+{\frac {b^{2}y^{2}}{x^{2}+y^{2}+z^{2}-b^{2}w^{2}}}+{\frac {c^{2}z^{2}}{x^{2}+y^{2}+z^{2}-c^{2}w^{2}}}=0}
They are used in the treatment of conical refractions.
References Bateman, H. (1910), "Kummer's quartic surface as a wave surface.", Proceedings of the London Mathematical Society, 8 (1): 375–382, doi:10.1112/plms/s2-8.1.375, ISSN 0024-6115 Cayley, Arthur (1846), "Sur la surface des ondes", Journal de Mathématiques Pures et Appliquées, 11: 291–296, Collected papers vol 1 pages 302–305 Fresnel, A. (1822), "Second supplément au mémoire sur la double réfraction" (signed 31 March 1822, submitted 1 April 1822), in H. de Sénarmont, É. Verdet, and L. Fresnel (eds.), Oeuvres complètes d'Augustin Fresnel, Paris: Imprimerie Impériale (3 vols., 1866–70), vol. 2 (1868), pp. 369–442, especially pp. 369 (date présenté), 386–8 (eq. 4), 442 (signature and date). Knörrer, H. (1986), "Die Fresnelsche Wellenfläche", Arithmetik und Geometrie, Math. Miniaturen, vol. 3, Basel, Boston, Berlin: Birkhäuser, pp. 115–141, ISBN 978-3-7643-1759-1, MR 0879281 Love, A. E. H. (2011) [1927], A treatise on the Mathematical Theory of Elasticity, Dover Publications, New York, ISBN 978-0-486-60174-8, MR 0010851
External links Fresnel wave surface