{"id":2926,"date":"2017-09-13T17:20:37","date_gmt":"2017-09-13T16:20:37","guid":{"rendered":"http:\/\/www.lessvtdelagrenouille.fr\/blog\/?p=2926"},"modified":"2020-11-15T23:46:38","modified_gmt":"2020-11-15T22:46:38","slug":"la-notion-dechelle","status":"publish","type":"post","link":"http:\/\/www.lessvtdelagrenouille.fr\/blog\/la-notion-dechelle\/","title":{"rendered":"La notion d&rsquo;\u00e9chelle"},"content":{"rendered":"<p>La notion d&rsquo;\u00e9chelle permet de repr\u00e9senter sur une feuille une version r\u00e9duite de l\u2019\u00e9l\u00e9ment. Elle est utilis\u00e9e pour pouvoir repr\u00e9senter le tr\u00e8s grand et le tr\u00e8s petit.<\/p>\n<p>Exemple mesurer la taille r\u00e9elle d&rsquo;une cellule observ\u00e9e au microscope:<\/p>\n<table style=\"width: 100%;\">\n<tbody>\n<tr>\n<td style=\"width: 39.0349%;\" rowspan=\"3\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-2927\" src=\"http:\/\/www.lessvtdelagrenouille.fr\/blog\/wp-content\/uploads\/2017\/09\/10058830175_1820818720_c.jpg\" alt=\"\" width=\"414\" height=\"276\" srcset=\"http:\/\/www.lessvtdelagrenouille.fr\/blog\/wp-content\/uploads\/2017\/09\/10058830175_1820818720_c.jpg 800w, http:\/\/www.lessvtdelagrenouille.fr\/blog\/wp-content\/uploads\/2017\/09\/10058830175_1820818720_c-300x200.jpg 300w, http:\/\/www.lessvtdelagrenouille.fr\/blog\/wp-content\/uploads\/2017\/09\/10058830175_1820818720_c-768x512.jpg 768w\" sizes=\"auto, (max-width: 414px) 100vw, 414px\" \/><\/td>\n<td style=\"width: 36.9651%; text-align: center;\">\n<p><span style=\"font-size: 12pt;\"><strong>Longueur du trait blanc <\/strong><\/span><\/p>\n<p><span style=\"color: #ff6600; font-size: 12pt;\">Je mesure sur le document<\/span><\/td>\n<td style=\"width: 2%; text-align: center;\">\n<h3><span style=\"font-size: 14pt;\"><strong>=<\/strong><\/span><\/h3>\n<p><span style=\"font-size: 14pt;\">\u00a0<\/span><\/td>\n<td style=\"width: 18%; text-align: center;\">\n<p><span style=\"font-size: 12pt;\"><strong>5 microm\u00e8tres<\/strong><\/span><\/p>\n<p><span style=\"font-size: 12pt;\">\u00a0<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 36.9651%; text-align: center;\">\n<p><span style=\"font-size: 12pt;\"><strong>Longueur de la cellule <\/strong><\/span><\/p>\n<p><span style=\"color: #ff6600; font-size: 12pt;\">Je mesure sur le document<\/span><\/td>\n<td style=\"width: 2%; text-align: center;\">\n<h3><span style=\"font-size: 14pt;\"><strong>=<\/strong><\/span><\/h3>\n<p><span style=\"font-size: 14pt;\">\u00a0<\/span><\/td>\n<td style=\"width: 18%; text-align: center;\"><span style=\"font-size: 12pt; color: #ff0000;\"><strong>taille r\u00e9elle de la cellule <span style=\"color: #0000ff;\">(ce que je cherche)<\/span><\/strong><\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 56.9651%;\" colspan=\"3\"><span style=\"font-size: 14pt;\"><strong>\u00a0<\/strong><\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Donc si on applique le produit en croix:\u00a0 <span style=\"font-size: 14pt;\"><strong>Longueur du trait blanc *<span style=\"font-size: 14pt; color: #ff0000;\">taille r\u00e9elle de la cellule <span style=\"color: #000000;\">=\u00a0Longueur de la cellule mesur\u00e9e*\u00a05 microm\u00e8tres<\/span><\/span> <\/strong><\/span><\/p>\n<p>Donc <span style=\"font-size: 14pt;\"><strong><span style=\"font-size: 14pt; color: #ff0000;\">taille r\u00e9elle de la cellule<\/span><\/strong><\/span> = (<span style=\"font-size: 14pt;\"><strong><span style=\"font-size: 14pt; color: #ff0000;\"><span style=\"color: #000000;\">Longueur de la cellule mesur\u00e9e*\u00a05 microm\u00e8tres)\/Longueur du trait blanc<\/span><\/span><\/strong><\/span><\/p>\n<p><span style=\"color: #3366ff; font-family: comic sans ms,sans-serif;\">toujours pas compris la notion d &lsquo;\u00e9chelle&#8230;.aller une petite vid\u00e9o d&rsquo;explication<\/span><br \/>\n<iframe loading=\"lazy\" src=\"https:\/\/www.youtube.com\/embed\/-nKF5P_xxyQ?rel=0\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<p>je m\u2019entra\u00eene:<\/p>\n<ul>\n<li><a href=\"http:\/\/www.lessvtdelagrenouille.fr\/blog\/?p=2949\">Taille du virus de la grippe<\/a><\/li>\n<li><a href=\"http:\/\/www.lessvtdelagrenouille.fr\/blog\/?p=2952\">Taille d&rsquo;un dinosaure<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>La notion d&rsquo;\u00e9chelle permet de repr\u00e9senter sur une feuille une version r\u00e9duite de l\u2019\u00e9l\u00e9ment. Elle est utilis\u00e9e pour pouvoir repr\u00e9senter le tr\u00e8s grand et le tr\u00e8s petit. Exemple mesurer la taille r\u00e9elle d&rsquo;une cellule observ\u00e9e au microscope: Longueur du trait blanc Je mesure sur le document = \u00a0 5 microm\u00e8tres \u00a0 Longueur de la cellule &#8230; <a title=\"La notion d&rsquo;\u00e9chelle\" class=\"read-more\" href=\"http:\/\/www.lessvtdelagrenouille.fr\/blog\/la-notion-dechelle\/\" aria-label=\"En savoir plus sur La notion d&rsquo;\u00e9chelle\">Lire la suite&#8230;<\/a><\/p>\n","protected":false},"author":1,"featured_media":2933,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[335,334,333,30],"tags":[],"class_list":["post-2926","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-3methode","category-4methode","category-5methode","category-decouverte"],"featured_image_urls_v2":{"full":["http:\/\/www.lessvtdelagrenouille.fr\/blog\/wp-content\/uploads\/2013\/09\/echelle.jpeg",201,251,false],"thumbnail":["http:\/\/www.lessvtdelagrenouille.fr\/blog\/wp-content\/uploads\/2013\/09\/echelle-150x150.jpeg",150,150,true],"medium":["http:\/\/www.lessvtdelagrenouille.fr\/blog\/wp-content\/uploads\/2013\/09\/echelle.jpeg",201,251,false],"medium_large":["http:\/\/www.lessvtdelagrenouille.fr\/blog\/wp-content\/uploads\/2013\/09\/echelle.jpeg",201,251,false],"large":["http:\/\/www.lessvtdelagrenouille.fr\/blog\/wp-content\/uploads\/2013\/09\/echelle.jpeg",201,251,false],"1536x1536":["http:\/\/www.lessvtdelagrenouille.fr\/blog\/wp-content\/uploads\/2013\/09\/echelle.jpeg",201,251,false],"2048x2048":["http:\/\/www.lessvtdelagrenouille.fr\/blog\/wp-content\/uploads\/2013\/09\/echelle.jpeg",201,251,false]},"post_excerpt_stackable_v2":"<p>La notion d&rsquo;\u00e9chelle permet de repr\u00e9senter sur une feuille une version r\u00e9duite de l\u2019\u00e9l\u00e9ment. Elle est utilis\u00e9e pour pouvoir repr\u00e9senter le tr\u00e8s grand et le tr\u00e8s petit. Exemple mesurer la taille r\u00e9elle d&rsquo;une cellule observ\u00e9e au microscope: Longueur du trait blanc Je mesure sur le document = \u00a0 5 microm\u00e8tres \u00a0 Longueur de la cellule Je mesure sur le document = \u00a0 taille r\u00e9elle de la cellule (ce que je cherche) \u00a0 Donc si on applique le produit en croix:\u00a0 Longueur du trait blanc *taille r\u00e9elle de la cellule =\u00a0Longueur de la cellule mesur\u00e9e*\u00a05 microm\u00e8tres Donc taille r\u00e9elle de la\u2026<\/p>\n","category_list_v2":"<a href=\"http:\/\/www.lessvtdelagrenouille.fr\/blog\/category\/3methode\/\" rel=\"category tag\">3methode<\/a>, <a href=\"http:\/\/www.lessvtdelagrenouille.fr\/blog\/category\/4methode\/\" rel=\"category tag\">4methode<\/a>, <a href=\"http:\/\/www.lessvtdelagrenouille.fr\/blog\/category\/5methode\/\" rel=\"category tag\">5methode<\/a>, <a href=\"http:\/\/www.lessvtdelagrenouille.fr\/blog\/category\/decouverte\/\" rel=\"category tag\">D\u00e9couverte<\/a>","author_info_v2":{"name":"RolandC","url":"http:\/\/www.lessvtdelagrenouille.fr\/blog\/author\/rollandc\/"},"comments_num_v2":"0 commentaire","_links":{"self":[{"href":"http:\/\/www.lessvtdelagrenouille.fr\/blog\/wp-json\/wp\/v2\/posts\/2926","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.lessvtdelagrenouille.fr\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.lessvtdelagrenouille.fr\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.lessvtdelagrenouille.fr\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.lessvtdelagrenouille.fr\/blog\/wp-json\/wp\/v2\/comments?post=2926"}],"version-history":[{"count":5,"href":"http:\/\/www.lessvtdelagrenouille.fr\/blog\/wp-json\/wp\/v2\/posts\/2926\/revisions"}],"predecessor-version":[{"id":2955,"href":"http:\/\/www.lessvtdelagrenouille.fr\/blog\/wp-json\/wp\/v2\/posts\/2926\/revisions\/2955"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/www.lessvtdelagrenouille.fr\/blog\/wp-json\/wp\/v2\/media\/2933"}],"wp:attachment":[{"href":"http:\/\/www.lessvtdelagrenouille.fr\/blog\/wp-json\/wp\/v2\/media?parent=2926"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.lessvtdelagrenouille.fr\/blog\/wp-json\/wp\/v2\/categories?post=2926"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.lessvtdelagrenouille.fr\/blog\/wp-json\/wp\/v2\/tags?post=2926"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}