{"id":48,"date":"2022-05-24T22:53:54","date_gmt":"2022-05-24T20:53:54","guid":{"rendered":"http:\/\/actionsciencejargeau.fr\/?page_id=48"},"modified":"2022-07-12T21:55:51","modified_gmt":"2022-07-12T19:55:51","slug":"panneau1","status":"publish","type":"page","link":"https:\/\/actionsciencejargeau.fr\/index.php\/accueil\/cdu\/etape3\/panneau1\/","title":{"rendered":"Nucl\u00e9osynth\u00e8se"},"content":{"rendered":"\n<div class=\"wp-block-group has-luminous-dusk-gradient-background has-background is-nowrap is-layout-flex wp-container-core-group-is-layout-ad2f72ca wp-block-group-is-layout-flex\">\n<div class=\"wp-block-group has-luminous-dusk-gradient-background has-background is-vertical is-layout-flex wp-container-core-group-is-layout-8cf370e7 wp-block-group-is-layout-flex\">\n<div class=\"wp-block-group is-vertical is-layout-flex wp-container-core-group-is-layout-8cf370e7 wp-block-group-is-layout-flex\">\n<figure class=\"wp-block-audio\"><audio controls src=\"http:\/\/actionsciencejargeau.fr\/wp-content\/uploads\/2022\/07\/Et3-1.mp3\"><\/audio><\/figure>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link\" href=\"http:\/\/actionsciencejargeau.fr\/index.php\/accueil\/cdu\/etape2\/panneau3\/\">pr\u00e9c\u00e9dent<\/a><\/div>\n\n\n\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link\" href=\"http:\/\/actionsciencejargeau.fr\/index.php\/accueil\/cdu\/etape3\/panneau2\/\">suivant<\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-group is-vertical is-layout-flex wp-container-core-group-is-layout-8cf370e7 wp-block-group-is-layout-flex\">\n<div class=\"wp-block-group has-luminous-dusk-gradient-background has-background is-vertical is-layout-flex wp-container-core-group-is-layout-8cf370e7 wp-block-group-is-layout-flex\">\n<p class=\"has-small-font-size\">La nucl\u00e9osynth\u00e8se c\u2019est l\u2019ensemble des r\u00e9actions nucl\u00e9aires qui ont permis de donner naissance aux atomes. Il y a 3 grandes origines&nbsp;:<\/p>\n\n\n\n<ul class=\"has-small-font-size wp-block-list\"><li>tout d\u2019abord lors du Big Bang, avec la formation de hydrog\u00e8ne, l\u2019h\u00e9lium, le b\u00e9ryllium et le lithium<\/li><li>puis au c\u0153ur de l\u2019\u00e9toile, pour former les 22 premiers \u00e9l\u00e9ments, \u00e0 partir de la consommation de l\u2019hydrog\u00e8ne<\/li><li>enfin dans les supernov\u00e6<br>Il y a aussi la d\u00e9sint\u00e9gration de certains atomes radioactifs qui se transformeront en d\u2019autres atomes. \u00c7a existe&nbsp;! mais on n\u2019arrive toujours pas \u00e0 fabriquer de l\u2019or \u00e0 partir du plomb.<\/li><\/ul>\n\n\n\n<p class=\"has-small-font-size\">A chaque endroit de notre univers, nous observons les m\u00eames lois, et la structure de l\u2019atome y est identique.<br>Il y a quelque chose de tr\u00e8s homog\u00e8ne entre l\u2019infiniment petit et l\u2019infiniment grand.<\/p>\n\n\n\n<p class=\"has-small-font-size\">La mati\u00e8re, c\u2019est l\u2019atome lui-m\u00eame, le rayonnement, c\u2019est le d\u00e9gagement d\u2019\u00e9nergie \u00e0 chacune de ses transformations.<\/p>\n\n\n\n<p class=\"has-small-font-size\">Chaque atome comporte autant d\u2019\u00e9lectrons que de protons, afin d\u2019\u00eatre \u00e9lectriquement neutre. Les \u00e9lectrons sont tr\u00e8s mobiles autour du noyau. Ils n\u2019ont pas tous la m\u00eame \u00e9nergie et sont r\u00e9partis \u00e0 des niveaux diff\u00e9rents depuis le noyau. Plus l\u2019\u00e9lectron est proche du noyau, plus il faudra fournir de l\u2019\u00e9nergie pour l\u2019extraire de son orbite.<br>Plus il est \u00e9loign\u00e9, et plus l\u2019\u00e9lectron sera facilement enlev\u00e9. Concernant l\u2019orbitale externe, elle peut \u00eatre incompl\u00e8tement remplie. L\u2019atome pourra \u00eatre stabilis\u00e9 en partageant ses \u00e9lectrons avec un autre atome dont son orbitale externe est presque remplie.<\/p>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"453\" height=\"854\" src=\"http:\/\/actionsciencejargeau.fr\/wp-content\/uploads\/2022\/07\/image-23.png\" alt=\"\" class=\"wp-image-282\" srcset=\"https:\/\/actionsciencejargeau.fr\/wp-content\/uploads\/2022\/07\/image-23.png 453w, https:\/\/actionsciencejargeau.fr\/wp-content\/uploads\/2022\/07\/image-23-159x300.png 159w\" sizes=\"(max-width: 453px) 100vw, 453px\" \/><\/figure>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>La nucl\u00e9osynth\u00e8se c\u2019est l\u2019ensemble des r\u00e9actions nucl\u00e9aires qui ont permis de donner naissance aux atomes. Il y a 3 grandes origines&nbsp;: tout d\u2019abord lors du Big Bang, avec la formation [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"parent":45,"menu_order":1,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-48","page","type-page","status-publish","hentry","entry"],"_links":{"self":[{"href":"https:\/\/actionsciencejargeau.fr\/index.php\/wp-json\/wp\/v2\/pages\/48","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/actionsciencejargeau.fr\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/actionsciencejargeau.fr\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/actionsciencejargeau.fr\/index.php\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/actionsciencejargeau.fr\/index.php\/wp-json\/wp\/v2\/comments?post=48"}],"version-history":[{"count":5,"href":"https:\/\/actionsciencejargeau.fr\/index.php\/wp-json\/wp\/v2\/pages\/48\/revisions"}],"predecessor-version":[{"id":306,"href":"https:\/\/actionsciencejargeau.fr\/index.php\/wp-json\/wp\/v2\/pages\/48\/revisions\/306"}],"up":[{"embeddable":true,"href":"https:\/\/actionsciencejargeau.fr\/index.php\/wp-json\/wp\/v2\/pages\/45"}],"wp:attachment":[{"href":"https:\/\/actionsciencejargeau.fr\/index.php\/wp-json\/wp\/v2\/media?parent=48"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}