{"id":1446,"date":"2024-07-15T11:10:19","date_gmt":"2024-07-15T09:10:19","guid":{"rendered":"https:\/\/www.fresnel.fr\/wp\/?page_id=1446"},"modified":"2024-07-15T12:27:28","modified_gmt":"2024-07-15T10:27:28","slug":"augustin-fresnel","status":"publish","type":"page","link":"https:\/\/www.fresnel.fr\/wp\/en\/the-institute\/presentation\/augustin-fresnel\/","title":{"rendered":"Augustin Fresnel"},"content":{"rendered":"

\"\"Augustin Jean Fresnel<\/strong>
\n(10 mai 1788 at Broglie – 14 juillet 1827 at Ville-d\u2019Avray), french physician.
\nThe founder of modern optics, he proposed an explanation of all optical phenomena within the framework of the wave theory of light.<\/p>\n

Biography<\/strong>
\nThe son of an architect, Augustin Fresnel was born in Broglie, in the Eure department.
\nHe entered the \u00c9cole Centrale in Caen at the age of 13, then the \u00c9cole Polytechnique at the age of 16 and a half.
\nIn 1809, he became a member of the \u00c9cole Nationale des Ponts et Chauss\u00e9es in the lighthouse department.
\nHe became a member of the Acad\u00e9mie des Sciences<\/a> in 1823 and of the Royal Society<\/a>, which awarded him the Rumford Medal<\/a> in 1824.
\nAugustin Fresnel began his career by carrying out numerous experiments on light interference, for which he coined the notion of wavelength.
\nHe calculated the so-called Fresnel integrals. His first proof was that two beams of light polarised in different planes had no interference effect.<\/p>\n

From this experiment, he deduced that the wave motion of polarised light is transverse and not longitudinal (like that of sound) as had previously been thought.
\nFinally, he was the first to produce circular polarised light. His so-called Fresnel formulae on refraction are still used today. In the field of applied optics, Fresnel invented the step lens used to increase the power of headlights. He died of tuberculosis in 1827 in Ville-d’Avray, near Paris.<\/p>\n

\n

– Fresnel representations (Wikip\u00e9dia)<\/a>
\n– Bicentenaire de sa th\u00e9orie ondulatoire de la lumi\u00e8re (2019)<\/p>\n","protected":false},"excerpt":{"rendered":"

Augustin Jean Fresnel (10 mai 1788 at Broglie – 14 juillet 1827 at Ville-d\u2019Avray), french […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":1442,"menu_order":13,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"inline_featured_image":false,"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"class_list":{"0":"post-1446","1":"page","2":"type-page","3":"status-publish","5":"entry"},"acf":[],"lang":"en","translations":{"en":1446,"fr":106},"pll_sync_post":[],"_links":{"self":[{"href":"https:\/\/www.fresnel.fr\/wp\/wp-json\/wp\/v2\/pages\/1446","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.fresnel.fr\/wp\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.fresnel.fr\/wp\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.fresnel.fr\/wp\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fresnel.fr\/wp\/wp-json\/wp\/v2\/comments?post=1446"}],"version-history":[{"count":3,"href":"https:\/\/www.fresnel.fr\/wp\/wp-json\/wp\/v2\/pages\/1446\/revisions"}],"predecessor-version":[{"id":2239,"href":"https:\/\/www.fresnel.fr\/wp\/wp-json\/wp\/v2\/pages\/1446\/revisions\/2239"}],"up":[{"embeddable":true,"href":"https:\/\/www.fresnel.fr\/wp\/wp-json\/wp\/v2\/pages\/1442"}],"wp:attachment":[{"href":"https:\/\/www.fresnel.fr\/wp\/wp-json\/wp\/v2\/media?parent=1446"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}