{"version":"1.0","provider_name":"mnemozilla","provider_url":"https:\/\/mnemozilla.com","author_name":"remedios1422","author_url":"https:\/\/mnemozilla.com\/author\/remedios1422","title":"Why are the portholes on ships round? - mnemozilla","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"zZUxprCKMe\"><a href=\"https:\/\/mnemozilla.com\/en\/fizika\/pochemu-illyuminatory-na-korablyah-kruglye.html\">Why are the portholes on ships round?<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/mnemozilla.com\/en\/fizika\/pochemu-illyuminatory-na-korablyah-kruglye.html\/embed#?secret=zZUxprCKMe\" width=\"600\" height=\"338\" title=\"&#8220;Why are the portholes on ships round?&#8221; &#8212; mnemozilla\" data-secret=\"zZUxprCKMe\" 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:\/\/mnemozilla.com\/wp-includes\/js\/wp-embed.min.js\n<\/script>\n","thumbnail_url":"http:\/\/mnemozilla.com\/wp-content\/uploads\/2023\/09\/image-1.webp","thumbnail_width":1024,"thumbnail_height":1024,"description":"Portholes on ships are round for several reasons, some practical and some historical. The shape of a porthole depends largely on its purpose and the conditions it must withstand. Historically, portholes were originally used on sailing ships to provide ventilation and lighting below deck. They were often made of wood, which was easier to work [&hellip;]"}