{"version":"1.0","provider_name":"Antique Maps Adina Sommer","provider_url":"https:\/\/www.asommer.de\/en","author_name":"asommer","author_url":"https:\/\/www.asommer.de\/en\/author\/asommer\/","title":"Antique Map - Mec - Appareille de Deghen pour la direction des Aerostats - Antique Maps Adina Sommer","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"HFeAQrbHEO\"><a href=\"https:\/\/www.asommer.de\/en\/karte\/appareille-de-deghen-pour-la-direction-des-aerostats\/\">Appareille de Deghen pour la direction des Aerostats<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.asommer.de\/en\/karte\/appareille-de-deghen-pour-la-direction-des-aerostats\/embed\/#?secret=HFeAQrbHEO\" width=\"600\" height=\"338\" title=\"&#8220;Appareille de Deghen pour la direction des Aerostats&#8221; &#8212; Antique Maps Adina Sommer\" data-secret=\"HFeAQrbHEO\" 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\/* ]]> *\/\n<\/script>\n","description":"Representation of an aircraft. In 1807, the watchmaker Jakob Degen constructed a flying machine with movable wings that was driven by muscle power. Degen realized that the lift that could be achieved in this way was not sufficient and made do with an auxiliary balloon filled with hydrogen, which generated about half the lift needed &hellip;"}