Augustin-Jean Fresnel developed wave descriptions of diffraction and polarization of an electromagnetic wave. Fresnel diffraction retains the curvature of the propagation wave phase, letting a wave account predict patterns at finite distances from an aperture. His polarization work helped establish the transverse character of light. In a modern example, orthogonal linear polarizations have no interference cross term in an ordinary total-intensity measurement; the field directions matter as well as the relative wave phase. He also connected optical theory with practical lighthouse illumination through the Fresnel lens.[ref]
Augustin Fresnel, Institut Fresnel biography. Institutional account: wave optics, Fresnel integrals, polarization and lighthouse lenses; orthogonal-polarization example expressed in modern terms
A physicist.[ref]
https://www.fresnel.fr/wp/institut/presentation/augustin-fresnel/. Independent biographical identity and professional specialization
Portrait of Augustin-Jean Fresnel
. Pierre-Jean David d’Angers, sculptor; photograph by Eric Emo; Paris Musées / Musée Carnavalet, S668. Creative Commons CC0 1.0 Universal Public Domain Dedication, as supplied by Paris Musées. Source usage terms, via Wikimedia Commons. Source. Articles by others on the same topic
Augustin-Jean Fresnel (1788–1827) was a French engineer and physicist, best known for his work on the wave theory of light and the development of the Fresnel lens. His contributions significantly advanced our understanding of optics. Fresnel's most notable achievements include: 1. **Wave Theory of Light**: Fresnel was a prominent advocate of the wave theory of light, which was initially proposed by Christiaan Huygens.
