{"version":"1.0","provider_name":"\u00c9tienne Ghys","provider_url":"https:\/\/perso.ens-lyon.fr\/ghys","author_name":"ghys","author_url":"https:\/\/perso.ens-lyon.fr\/ghys\/author\/ghys\/","title":"World Cup 2022: geometry and speed of the tournament ball - \u00c9tienne Ghys","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"GtvqJlV1oN\"><a href=\"https:\/\/perso.ens-lyon.fr\/ghys\/2023\/01\/29\/2500\/\">World Cup 2022: geometry and speed of the tournament ball<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/perso.ens-lyon.fr\/ghys\/2023\/01\/29\/2500\/embed\/#?secret=GtvqJlV1oN\" width=\"600\" height=\"338\" title=\"\u00ab\u00a0World Cup 2022: geometry and speed of the tournament ball\u00a0\u00bb &#8212; \u00c9tienne Ghys\" data-secret=\"GtvqJlV1oN\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script>\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n<\/script>\n","description":"https:\/\/www.lemonde.fr\/sciences\/article\/2022\/12\/07\/coupe-du-monde-2022-geometrie-et-vitesse-du-ballon-du-tournoi_6153349_1650684.html Millions of viewers are watching the 2022 World Cup matches, but how many have actually watched the ball? It is called Al Rihla, which means \u00ab\u00a0the journey\u00a0\u00bb in Arabic. Mathematicians prefer to call it an icosidodecahedron\u2026 from the Greek ico for \u00ab\u00a0twenty\u00a0\u00bb, dode for \u00ab\u00a0twelve\u00a0\u00bb and \u00e8dre for \u00ab\u00a0face\u00a0\u00bb. Each Cup is the occasion &hellip; Continuer la lecture de &rarr;"}