{"id":4046,"date":"2024-05-26T21:43:50","date_gmt":"2024-05-26T19:43:50","guid":{"rendered":"https:\/\/eva.louis-le-grand.net\/maths\/?p=4046"},"modified":"2024-07-09T15:35:51","modified_gmt":"2024-07-09T13:35:51","slug":"helices-spirales","status":"publish","type":"post","link":"https:\/\/eva.louis-le-grand.net\/maths\/index.php\/2024\/05\/26\/helices-spirales\/","title":{"rendered":"H\u00e9lices, Spirales"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Courbure, gauche, Torsion<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"217\" height=\"1024\" src=\"https:\/\/eva.louis-le-grand.net\/maths\/wp-content\/uploads\/2024\/05\/Group-2-IMG_7105_IMG_7107-3-images-217x1024.jpg\" alt=\"\" class=\"wp-image-4047\" srcset=\"https:\/\/eva.louis-le-grand.net\/maths\/wp-content\/uploads\/2024\/05\/Group-2-IMG_7105_IMG_7107-3-images-217x1024.jpg 217w, https:\/\/eva.louis-le-grand.net\/maths\/wp-content\/uploads\/2024\/05\/Group-2-IMG_7105_IMG_7107-3-images-scaled.jpg 543w\" sizes=\"auto, (max-width: 217px) 100vw, 217px\" \/><figcaption class=\"wp-element-caption\">Dent de Nerval, Mus\u00e9e Cluny<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"1024\" src=\"https:\/\/eva.louis-le-grand.net\/maths\/wp-content\/uploads\/2024\/05\/IMG_7114-768x1024.jpg\" alt=\"\" class=\"wp-image-4048\" style=\"width:650px;height:auto\" srcset=\"https:\/\/eva.louis-le-grand.net\/maths\/wp-content\/uploads\/2024\/05\/IMG_7114-768x1024.jpg 768w, https:\/\/eva.louis-le-grand.net\/maths\/wp-content\/uploads\/2024\/05\/IMG_7114-225x300.jpg 225w, https:\/\/eva.louis-le-grand.net\/maths\/wp-content\/uploads\/2024\/05\/IMG_7114-1152x1536.jpg 1152w, https:\/\/eva.louis-le-grand.net\/maths\/wp-content\/uploads\/2024\/05\/IMG_7114-1536x2048.jpg 1536w, https:\/\/eva.louis-le-grand.net\/maths\/wp-content\/uploads\/2024\/05\/IMG_7114-scaled.jpg 1920w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Escalier de Notre Dame, Mus\u00e9e Cluny<\/p>\n\n\n\n<figure class=\"wp-block-video\"><video height=\"1080\" style=\"aspect-ratio: 1080 \/ 1080;\" width=\"1080\" controls src=\"https:\/\/eva.louis-le-grand.net\/maths\/wp-content\/uploads\/2024\/06\/verre-helice.mov\"><\/video><\/figure>\n\n\n\n<figure class=\"wp-block-video\"><video height=\"1080\" style=\"aspect-ratio: 1080 \/ 1080;\" width=\"1080\" controls src=\"https:\/\/eva.louis-le-grand.net\/maths\/wp-content\/uploads\/2024\/06\/verre.mov\"><\/video><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Voyons juste un autre effet surprenant d&rsquo;h\u00e9lice avant de passer \u00e0 table. On a l&rsquo;impression ici que les h\u00e9lices bleu et rouges sortent du socle.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"245\" height=\"511\" src=\"https:\/\/eva.louis-le-grand.net\/maths\/wp-content\/uploads\/2024\/06\/ezgif-4-81d6e74e27.gif\" alt=\"\" class=\"wp-image-4181\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Alors que c&rsquo;est une illusion de rotation d&rsquo;h\u00e9lices.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Une h\u00e9lice sort d&rsquo;une pomme de terre et est surprenante.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"906\" height=\"1024\" src=\"https:\/\/eva.louis-le-grand.net\/maths\/wp-content\/uploads\/2024\/06\/IMG_7148-helice-patate-906x1024.jpg\" alt=\"\" class=\"wp-image-4131\" srcset=\"https:\/\/eva.louis-le-grand.net\/maths\/wp-content\/uploads\/2024\/06\/IMG_7148-helice-patate-906x1024.jpg 906w, https:\/\/eva.louis-le-grand.net\/maths\/wp-content\/uploads\/2024\/06\/IMG_7148-helice-patate-266x300.jpg 266w, https:\/\/eva.louis-le-grand.net\/maths\/wp-content\/uploads\/2024\/06\/IMG_7148-helice-patate-768x868.jpg 768w, https:\/\/eva.louis-le-grand.net\/maths\/wp-content\/uploads\/2024\/06\/IMG_7148-helice-patate.jpg 1064w\" sizes=\"auto, (max-width: 906px) 100vw, 906px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"700\" src=\"https:\/\/eva.louis-le-grand.net\/maths\/wp-content\/uploads\/2024\/06\/IMG_7149-helice-carotte-1024x700.jpg\" alt=\"\" class=\"wp-image-4129\" srcset=\"https:\/\/eva.louis-le-grand.net\/maths\/wp-content\/uploads\/2024\/06\/IMG_7149-helice-carotte-1024x700.jpg 1024w, https:\/\/eva.louis-le-grand.net\/maths\/wp-content\/uploads\/2024\/06\/IMG_7149-helice-carotte-300x205.jpg 300w, https:\/\/eva.louis-le-grand.net\/maths\/wp-content\/uploads\/2024\/06\/IMG_7149-helice-carotte-768x525.jpg 768w, https:\/\/eva.louis-le-grand.net\/maths\/wp-content\/uploads\/2024\/06\/IMG_7149-helice-carotte-1536x1050.jpg 1536w, https:\/\/eva.louis-le-grand.net\/maths\/wp-content\/uploads\/2024\/06\/IMG_7149-helice-carotte-2048x1400.jpg 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>H\u00e9lice, courbure, illusion<\/p>\n","protected":false},"author":1,"featured_media":4054,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-4046","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-non-classe"],"_links":{"self":[{"href":"https:\/\/eva.louis-le-grand.net\/maths\/index.php\/wp-json\/wp\/v2\/posts\/4046","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/eva.louis-le-grand.net\/maths\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/eva.louis-le-grand.net\/maths\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/eva.louis-le-grand.net\/maths\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/eva.louis-le-grand.net\/maths\/index.php\/wp-json\/wp\/v2\/comments?post=4046"}],"version-history":[{"count":6,"href":"https:\/\/eva.louis-le-grand.net\/maths\/index.php\/wp-json\/wp\/v2\/posts\/4046\/revisions"}],"predecessor-version":[{"id":4342,"href":"https:\/\/eva.louis-le-grand.net\/maths\/index.php\/wp-json\/wp\/v2\/posts\/4046\/revisions\/4342"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/eva.louis-le-grand.net\/maths\/index.php\/wp-json\/wp\/v2\/media\/4054"}],"wp:attachment":[{"href":"https:\/\/eva.louis-le-grand.net\/maths\/index.php\/wp-json\/wp\/v2\/media?parent=4046"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/eva.louis-le-grand.net\/maths\/index.php\/wp-json\/wp\/v2\/categories?post=4046"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/eva.louis-le-grand.net\/maths\/index.php\/wp-json\/wp\/v2\/tags?post=4046"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}