{"version":"1.0","provider_name":"Vetreria Artistica Vivarini","provider_url":"https:\/\/www.vivarini.it\/en\/","author_name":"Administrator Domino","author_url":"https:\/\/www.vivarini.it\/en\/author\/administratordomino\/","title":"The Art of Glass - Vetreria Artistica Vivarini","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"aocJi5Hv3U\"><a href=\"https:\/\/www.vivarini.it\/en\/the-art-of-glass\/\">The Art of Glass<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.vivarini.it\/en\/the-art-of-glass\/embed\/#?secret=aocJi5Hv3U\" width=\"600\" height=\"338\" title=\"&#8220;The Art of Glass&#8221; &#8212; Vetreria Artistica Vivarini\" data-secret=\"aocJi5Hv3U\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script type=\"text\/javascript\">\n\/* <![CDATA[ *\/\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:\/\/www.vivarini.it\/wp-includes\/js\/wp-embed.min.js\n\/* ]]> *\/\n<\/script>\n","thumbnail_url":"https:\/\/www.vivarini.it\/wp-content\/uploads\/2025\/04\/32a0275.jpg","thumbnail_width":1134,"thumbnail_height":756,"description":"Historically, glass is made from sand or mineral fragments such as sandstone and quartzite for the silicates, and from plant ash or natural soda for the alkalis. Shell fragments naturally present in the sand provide the calcium component needed to make the glass less soluble in water. Secondary components include various metallic or mineral oxides, added to modify the color of the glass."}