{"version":"1.0","provider_name":"\u5a01\u98a8 Ifu - The Authentic Katana","provider_url":"https:\/\/selected-japanese-swords.com\/ifu-fr","author_name":"\u5a01\u98a8 Ifu","author_url":"https:\/\/selected-japanese-swords.com\/ifu-fr\/author\/sjs\/","title":"Le Myst\u00e8re du Tranchant du Katana Authentique - \u5a01\u98a8 Ifu - The Authentic Katana","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"YHJWqtLTCm\"><a href=\"https:\/\/selected-japanese-swords.com\/ifu-fr\/sharpness-of-katana\/\">Le Myst\u00e8re du Tranchant du Katana Authentique<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/selected-japanese-swords.com\/ifu-fr\/sharpness-of-katana\/embed\/#?secret=YHJWqtLTCm\" width=\"600\" height=\"338\" title=\"&#8220;Le Myst\u00e8re du Tranchant du Katana Authentique&#8221; &#8212; \u5a01\u98a8 Ifu - The Authentic Katana\" data-secret=\"YHJWqtLTCm\" 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\/\/# sourceURL=https:\/\/selected-japanese-swords.com\/ifu-fr\/wp-includes\/js\/wp-embed.min.js\n<\/script>\n","description":"La plupart des gens ont un jour utilis\u00e9 une lame pour couper quelque chose. Pourtant, tr\u00e8s peu comprennent v\u00e9ritablement les principes physiques qui r\u00e9gissent la fa\u00e7on dont une lame coupe r\u00e9ellement. Il en va de m\u00eame pour la notion de tranchant. On dit souvent : \u00ab Ce couteau de cuisine coupe bien \u00bb ou \u00ab [&hellip;]","thumbnail_url":"https:\/\/selected-japanese-swords.com\/ifu-fr\/wp-content\/uploads\/2025\/07\/mistery-of-sharpness-1024x683.png","thumbnail_width":1024,"thumbnail_height":683}