{"id":7444,"date":"2020-04-15T09:00:00","date_gmt":"2020-04-15T07:00:00","guid":{"rendered":"https:\/\/smalltalks.eu\/blog\/?p=7444"},"modified":"2026-10-16T16:30:55","modified_gmt":"2026-10-16T14:30:55","slug":"la-fleche-qui-pointe-toujours-a-droite-kokichi-sugihara","status":"publish","type":"post","link":"https:\/\/smalltalks.eu\/blog\/2020\/04\/15\/la-fleche-qui-pointe-toujours-a-droite-kokichi-sugihara\/","title":{"rendered":"La fl\u00e8che qui pointe toujours \u00e0 droite (Kokichi Sugihara)"},"content":{"rendered":"\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Lecture series for those who stay home &quot;3D Optical Illusion: 1. Right-Facing Arrow&quot;\" width=\"640\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/vGxTKpOt6xU?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">On fait tourner la fl\u00e8che d&#8217;un demi-tour : elle pointe toujours \u00e0 droite. Seul un miroir la fait pointer \u00e0 gauche. Le math\u00e9maticien japonais Kokichi Sugihara explique l&#8217;une de ses illusions en trois dimensions, dans une s\u00e9rie de le\u00e7ons tourn\u00e9e pendant le confinement.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Voir aussi : <a href=\"https:\/\/smalltalks.eu\/blog\/?p=4274\">les pentes aimant\u00e9es<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Vid\u00e9o de Kokichi Sugihara, rep\u00e9r\u00e9e sur X (<a href=\"https:\/\/x.com\/Rainmaker1973\/status\/1089168724941307904\">post de @Rainmaker1973<\/a>).<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>On fait tourner la fl\u00e8che d&#8217;un demi-tour : elle pointe toujours \u00e0 droite. Seul un miroir la fait pointer \u00e0 gauche. Le math\u00e9maticien japonais Kokichi Sugihara explique l&#8217;une de ses illusions en trois dimensions, dans une s\u00e9rie de le\u00e7ons tourn\u00e9e pendant le confinement. Voir aussi : les pentes aimant\u00e9es. Vid\u00e9o de Kokichi Sugihara, rep\u00e9r\u00e9e sur X (post de @Rainmaker1973).<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[280,282,127],"tags":[],"class_list":["post-7444","post","type-post","status-publish","format-standard","hentry","category-sciences","category-sciences-mathematiques","category-theme-art"],"_links":{"self":[{"href":"https:\/\/smalltalks.eu\/blog\/wp-json\/wp\/v2\/posts\/7444","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/smalltalks.eu\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/smalltalks.eu\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/smalltalks.eu\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/smalltalks.eu\/blog\/wp-json\/wp\/v2\/comments?post=7444"}],"version-history":[{"count":1,"href":"https:\/\/smalltalks.eu\/blog\/wp-json\/wp\/v2\/posts\/7444\/revisions"}],"predecessor-version":[{"id":7474,"href":"https:\/\/smalltalks.eu\/blog\/wp-json\/wp\/v2\/posts\/7444\/revisions\/7474"}],"wp:attachment":[{"href":"https:\/\/smalltalks.eu\/blog\/wp-json\/wp\/v2\/media?parent=7444"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/smalltalks.eu\/blog\/wp-json\/wp\/v2\/categories?post=7444"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/smalltalks.eu\/blog\/wp-json\/wp\/v2\/tags?post=7444"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}