{"id":6097,"date":"2019-09-18T09:53:39","date_gmt":"2019-09-18T07:53:39","guid":{"rendered":"https:\/\/lepouliguen-ecole.fr\/?p=6097"},"modified":"2019-09-29T00:41:35","modified_gmt":"2019-09-28T22:41:35","slug":"creation-danthoptypes-en-ps-ms","status":"publish","type":"post","link":"https:\/\/lepouliguen-ecole.fr\/?p=6097","title":{"rendered":"Cr\u00e9ation d\u2019anthotypes en PS\/MS"},"content":{"rendered":"<p>Samuel, le photographe de l&rsquo;\u00e9cole, est venu dans la classe pour r\u00e9aliser des anthotypes avec les \u00e9l\u00e8ves.<\/p>\n<p><span style=\"text-decoration: underline;\"><em><strong>Qu&rsquo;est-ce qu&rsquo;un anthotype?<\/strong><\/em><\/span><\/p>\n<p>Sous l\u2019effet de la lumi\u00e8re du soleil, la chlorophylle (verte) change de couleur. Ce ph\u00e9nom\u00e8ne, commun \u00e0 la plupart des pigments d\u2019origine naturelle, est au principe de l\u2019anthotype, un proc\u00e9d\u00e9 de reproduction d\u2019image d\u00e9couvert par Sir John Herschel (1792-1871).<\/p>\n<p><span style=\"text-decoration: underline;\"><em><strong>Mat\u00e9riel n\u00e9cessaire<\/strong><\/em><\/span><\/p>\n<ul>\n<li>Des \u00e9pinards ou tout autre v\u00e9g\u00e9tal riche en chlorophylle<\/li>\n<li>Mortier et pilon<\/li>\n<li>Mi-bas ou chaussette fine<\/li>\n<li>Papier de fort grammage (224 g\/m<sup><span style=\"font-size: small;\">2<\/span><\/sup>, au minimum)<\/li>\n<li>Pinceau plat<\/li>\n<\/ul>\n<p><span style=\"text-decoration: underline;\"><em><strong>Comment proc\u00e9der?<\/strong><\/em><\/span><\/p>\n<p>Pr\u00e9paration de la solution photosensible<\/p>\n<ul>\n<li>Laver les \u00e9pinards puis les piler au mortier, jusqu\u2019\u00e0 obtenir une mati\u00e8re p\u00e2teuse.<\/li>\n<li>Placer cette p\u00e2te dans un mi-bas ou une chaussette fine et presser de fa\u00e7on \u00e0 en extraire tout le jus possible.<\/li>\n<li>Proc\u00e9der ainsi jusqu\u2019\u00e0 obtenir suffisamment de jus pour enduire le nombre de feuilles de papier d\u00e9sir\u00e9<\/li>\n<\/ul>\n<div style=\"width: 1170px;\" class=\"wp-video\"><!--[if lt IE 9]><script>document.createElement('video');<\/script><![endif]-->\n<video class=\"wp-video-shortcode\" id=\"video-6097-1\" width=\"1170\" height=\"658\" preload=\"metadata\" controls=\"controls\"><source type=\"video\/mp4\" src=\"https:\/\/lepouliguen-ecole.fr\/wp-content\/uploads\/2019\/09\/20190916_093635.mp4?_=1\" \/><a href=\"https:\/\/lepouliguen-ecole.fr\/wp-content\/uploads\/2019\/09\/20190916_093635.mp4\">https:\/\/lepouliguen-ecole.fr\/wp-content\/uploads\/2019\/09\/20190916_093635.mp4<\/a><\/video><\/div>\n<p><a href=\"https:\/\/lepouliguen-ecole.fr\/wp-content\/uploads\/2019\/09\/20190918_085457.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-6100\" src=\"https:\/\/lepouliguen-ecole.fr\/wp-content\/uploads\/2019\/09\/20190918_085457.jpg\" alt=\"\" width=\"1066\" height=\"1066\" srcset=\"https:\/\/lepouliguen-ecole.fr\/wp-content\/uploads\/2019\/09\/20190918_085457.jpg 1066w, https:\/\/lepouliguen-ecole.fr\/wp-content\/uploads\/2019\/09\/20190918_085457-150x150.jpg 150w, https:\/\/lepouliguen-ecole.fr\/wp-content\/uploads\/2019\/09\/20190918_085457-300x300.jpg 300w, https:\/\/lepouliguen-ecole.fr\/wp-content\/uploads\/2019\/09\/20190918_085457-768x768.jpg 768w, https:\/\/lepouliguen-ecole.fr\/wp-content\/uploads\/2019\/09\/20190918_085457-1024x1024.jpg 1024w\" sizes=\"auto, (max-width: 1066px) 100vw, 1066px\" \/><\/a><\/p>\n<p>Sensibilisation du papier<\/p>\n<ul>\n<li>Avec un pinceau plat, passer une premi\u00e8re couche de jus d\u2019\u00e9pinard en proc\u00e9dant dans le sens de la longueur de la feuille et en laissant une marge d\u2019environ 2 cm tout autour de celle-ci.<\/li>\n<li>Attendre que la surface du papier soit s\u00e8che au toucher pour repasser une couche, cette fois dans le sens de la largeur, de fa\u00e7on \u00e0 bien enduire le papier.<\/li>\n<\/ul>\n<p><a href=\"https:\/\/lepouliguen-ecole.fr\/wp-content\/uploads\/2019\/09\/20190916_100607-e1568795027696.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-6102 size-full\" src=\"https:\/\/lepouliguen-ecole.fr\/wp-content\/uploads\/2019\/09\/20190916_100607-e1568795027696.jpg\" alt=\"\" width=\"3264\" height=\"1836\" srcset=\"https:\/\/lepouliguen-ecole.fr\/wp-content\/uploads\/2019\/09\/20190916_100607-e1568795027696.jpg 3264w, https:\/\/lepouliguen-ecole.fr\/wp-content\/uploads\/2019\/09\/20190916_100607-e1568795027696-300x169.jpg 300w, https:\/\/lepouliguen-ecole.fr\/wp-content\/uploads\/2019\/09\/20190916_100607-e1568795027696-768x432.jpg 768w, https:\/\/lepouliguen-ecole.fr\/wp-content\/uploads\/2019\/09\/20190916_100607-e1568795027696-1024x576.jpg 1024w, https:\/\/lepouliguen-ecole.fr\/wp-content\/uploads\/2019\/09\/20190916_100607-e1568795027696-150x84.jpg 150w, https:\/\/lepouliguen-ecole.fr\/wp-content\/uploads\/2019\/09\/20190916_100607-e1568795027696-1320x743.jpg 1320w\" sizes=\"auto, (max-width: 3264px) 100vw, 3264px\" \/><\/a><a href=\"https:\/\/lepouliguen-ecole.fr\/wp-content\/uploads\/2019\/09\/20190916_101237-e1568792863799.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-6103 size-large\" src=\"https:\/\/lepouliguen-ecole.fr\/wp-content\/uploads\/2019\/09\/20190916_101237-e1568792863799-576x1024.jpg\" alt=\"\" width=\"576\" height=\"1024\" srcset=\"https:\/\/lepouliguen-ecole.fr\/wp-content\/uploads\/2019\/09\/20190916_101237-e1568792863799-576x1024.jpg 576w, https:\/\/lepouliguen-ecole.fr\/wp-content\/uploads\/2019\/09\/20190916_101237-e1568792863799-169x300.jpg 169w, https:\/\/lepouliguen-ecole.fr\/wp-content\/uploads\/2019\/09\/20190916_101237-e1568792863799-768x1365.jpg 768w, https:\/\/lepouliguen-ecole.fr\/wp-content\/uploads\/2019\/09\/20190916_101237-e1568792863799-84x150.jpg 84w, https:\/\/lepouliguen-ecole.fr\/wp-content\/uploads\/2019\/09\/20190916_101237-e1568792863799-1320x2347.jpg 1320w, https:\/\/lepouliguen-ecole.fr\/wp-content\/uploads\/2019\/09\/20190916_101237-e1568792863799.jpg 1836w\" sizes=\"auto, (max-width: 576px) 100vw, 576px\" \/><\/a><\/p>\n<p>Pr\u00e9paration des tirages<\/p>\n<ul>\n<li>Le tirage se fait par contact du papier sensibilis\u00e9 avec une image positive imprim\u00e9e sur du film pour r\u00e9troprojecteur. On peut \u00e9galement r\u00e9aliser des photogrammes en posant des objets directement sur le papier photosensible<\/li>\n<\/ul>\n<p><a href=\"https:\/\/lepouliguen-ecole.fr\/wp-content\/uploads\/2019\/09\/20190918_085631.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-6101\" src=\"https:\/\/lepouliguen-ecole.fr\/wp-content\/uploads\/2019\/09\/20190918_085631.jpg\" alt=\"\" width=\"1066\" height=\"1066\" srcset=\"https:\/\/lepouliguen-ecole.fr\/wp-content\/uploads\/2019\/09\/20190918_085631.jpg 1066w, https:\/\/lepouliguen-ecole.fr\/wp-content\/uploads\/2019\/09\/20190918_085631-150x150.jpg 150w, https:\/\/lepouliguen-ecole.fr\/wp-content\/uploads\/2019\/09\/20190918_085631-300x300.jpg 300w, https:\/\/lepouliguen-ecole.fr\/wp-content\/uploads\/2019\/09\/20190918_085631-768x768.jpg 768w, https:\/\/lepouliguen-ecole.fr\/wp-content\/uploads\/2019\/09\/20190918_085631-1024x1024.jpg 1024w\" sizes=\"auto, (max-width: 1066px) 100vw, 1066px\" \/><\/a><\/p>\n<p>Exposition et r\u00e9v\u00e9lation<\/p>\n<ul>\n<li>L\u2019exposition se fait au soleil. Elle doit durer jusqu\u2019\u00e0 ce que la couleur verte du papier sensible devienne jaune p\u00e2le. Cela peut prendre 1 \u00e0 2 jours, selon l\u2019ensoleillement.<\/li>\n<\/ul>\n<p>\u00c0 la diff\u00e9rence de la plupart des proc\u00e9d\u00e9s de reproduction photographique, la r\u00e9v\u00e9lation de l\u2019image ne n\u00e9cessite pas l\u2019action d\u2019un agent chimique&nbsp;; elle s\u2019accomplit par le seul effet de la lumi\u00e8re. L\u2019image r\u00e9v\u00e9l\u00e9e est un monochrome vert sur fond blanc cass\u00e9.<\/p>\n<p>Les enfants ont pris beaucoup de plaisir \u00e0 r\u00e9aliser cet atelier. Ecraser, presser, peindre, dessiner, observer la magie op\u00e9rer&#8230; Que des actions qui ont toujours du succ\u00e8s aupr\u00e8s des plus jeunes! Merci \u00e0 Samuel pour ce temps de partage et de d\u00e9couverte.<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Samuel, le photographe de l&rsquo;\u00e9cole, est venu dans la classe pour r\u00e9aliser des anthotypes avec les \u00e9l\u00e8ves. Qu&rsquo;est-ce qu&rsquo;un anthotype? Sous l\u2019effet de la lumi\u00e8re du soleil, la chlorophylle (verte) change de couleur. Ce ph\u00e9nom\u00e8ne, commun \u00e0 la plupart des pigments d\u2019origine naturelle, est au principe de l\u2019anthotype, un proc\u00e9d\u00e9 de reproduction d\u2019image d\u00e9couvert par<\/p>\n<p><a href=\"https:\/\/lepouliguen-ecole.fr\/?p=6097\" class=\"more-link themebutton\">Read More<\/a><\/p>\n","protected":false},"author":3,"featured_media":6100,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"footnotes":""},"categories":[1,3],"tags":[],"class_list":["post-6097","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-non-classe","category-ps-ms"],"_links":{"self":[{"href":"https:\/\/lepouliguen-ecole.fr\/index.php?rest_route=\/wp\/v2\/posts\/6097","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lepouliguen-ecole.fr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lepouliguen-ecole.fr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lepouliguen-ecole.fr\/index.php?rest_route=\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/lepouliguen-ecole.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=6097"}],"version-history":[{"count":7,"href":"https:\/\/lepouliguen-ecole.fr\/index.php?rest_route=\/wp\/v2\/posts\/6097\/revisions"}],"predecessor-version":[{"id":6181,"href":"https:\/\/lepouliguen-ecole.fr\/index.php?rest_route=\/wp\/v2\/posts\/6097\/revisions\/6181"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/lepouliguen-ecole.fr\/index.php?rest_route=\/wp\/v2\/media\/6100"}],"wp:attachment":[{"href":"https:\/\/lepouliguen-ecole.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6097"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lepouliguen-ecole.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6097"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lepouliguen-ecole.fr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6097"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}