{"id":1556,"date":"2015-11-25T08:03:38","date_gmt":"2015-11-25T08:03:38","guid":{"rendered":"https:\/\/passerelle2.ac-nantes.fr\/ecole-hopital-nantes\/?p=1556"},"modified":"2016-12-13T14:38:15","modified_gmt":"2016-12-13T14:38:15","slug":"destination-loeil-humain-liris-la-retine","status":"publish","type":"post","link":"https:\/\/passerelle2.ac-nantes.fr\/ecole-hopital-nantes\/2015\/11\/25\/destination-loeil-humain-liris-la-retine\/","title":{"rendered":"Destination l’\u0153il humain = formation de l’image sur la r\u00e9tine"},"content":{"rendered":"

Travail r\u00e9alis\u00e9 par Marine, une \u00e9l\u00e8ve de quatri\u00e8me :<\/p>\n

Les articles pr\u00e9c\u00e9dents (article du 5 octobre<\/a> et article du 17 novenbre<\/a>), nous ont permis de pr\u00e9senter l’anatomie de l’oeil ainsi que les r\u00f4les de la corn\u00e9e et du cristallin. Nous allons maintenant expliquer comment l’image se forme sur la r\u00e9tine.<\/p>\n

On mod\u00e9lise l\u2019\u0153il \u00e0 l\u2019aide d\u2019un diaphragme,\u00a0d\u2019une lentille et d\u2019un \u00e9cran, comme sur le sch\u00e9ma ci-dessous.<\/p>\n

\"\"<\/a><\/p>\n

\u2022 \u00c9clairons un objet avec une source lumineuse.
\n\u2022 Formons l\u2019image nette de l\u2019objet \u00e9clair\u00e9 sur\u00a0l\u2019\u00e9cran.<\/p>\n

L\u2019image qui se forme sur l’\u00e9cran est-elle \u00ab droite \u00bb \u00a0par rapport \u00e0 l\u2019objet ?<\/span><\/strong><\/span><\/p>\n

L\u2019image reste-t-elle nette sur l\u2019\u00e9cran lorsque on approche l\u2019objet de la lentille ?<\/span><\/strong><\/span><\/p>\n

Comment proc\u00e9der pour obtenir \u00e0 nouveau une image nette sur l\u2019\u00e9cran sans toucher ni \u00e0 la position de la lentille ni \u00e0 la position de l’\u00e9cran\u00a0?<\/span><\/strong><\/span><\/p>\n

Qu\u2019est ce qui diff\u00e9rencie les deux lentilles que tu as utilis\u00e9es ?<\/span><\/strong><\/span><\/p>\n

\"\"<\/a>\"\"<\/a>\"\"<\/a>
\n<\/span><\/strong><\/span><\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

Travail r\u00e9alis\u00e9 par Marine, une \u00e9l\u00e8ve de quatri\u00e8me : Les articles pr\u00e9c\u00e9dents (article du 5 octobre et article du 17 novenbre), nous ont permis de pr\u00e9senter l’anatomie de l’oeil ainsi que les r\u00f4les de la corn\u00e9e et du cristallin. Nous allons maintenant expliquer comment l’image se forme sur la r\u00e9tine. On mod\u00e9lise l\u2019\u0153il \u00e0 l\u2019aide … Continuer la lecture de Destination l’\u0153il humain = formation de l’image sur la r\u00e9tine<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":3930,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"h5ap_radio_sources":[],"footnotes":""},"categories":[53],"tags":[59],"post_folder":[],"class_list":["post-1556","post","type-post","status-publish","format-standard","hentry","category-destination-sciences","tag-atelier-sciences"],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/passerelle2.ac-nantes.fr\/ecole-hopital-nantes\/wp-json\/wp\/v2\/posts\/1556","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/passerelle2.ac-nantes.fr\/ecole-hopital-nantes\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/passerelle2.ac-nantes.fr\/ecole-hopital-nantes\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/passerelle2.ac-nantes.fr\/ecole-hopital-nantes\/wp-json\/wp\/v2\/users\/3930"}],"replies":[{"embeddable":true,"href":"https:\/\/passerelle2.ac-nantes.fr\/ecole-hopital-nantes\/wp-json\/wp\/v2\/comments?post=1556"}],"version-history":[{"count":0,"href":"https:\/\/passerelle2.ac-nantes.fr\/ecole-hopital-nantes\/wp-json\/wp\/v2\/posts\/1556\/revisions"}],"wp:attachment":[{"href":"https:\/\/passerelle2.ac-nantes.fr\/ecole-hopital-nantes\/wp-json\/wp\/v2\/media?parent=1556"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/passerelle2.ac-nantes.fr\/ecole-hopital-nantes\/wp-json\/wp\/v2\/categories?post=1556"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/passerelle2.ac-nantes.fr\/ecole-hopital-nantes\/wp-json\/wp\/v2\/tags?post=1556"},{"taxonomy":"post_folder","embeddable":true,"href":"https:\/\/passerelle2.ac-nantes.fr\/ecole-hopital-nantes\/wp-json\/wp\/v2\/post_folder?post=1556"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}