{"version":"1.0","provider_name":"book\u2777net book scanners","provider_url":"https:\/\/book2net.net\/en\/","author_name":"multiadmin","author_url":"https:\/\/book2net.net\/en\/author\/multiadmin\/","title":"Apochromat \/ apochromatic - book\u2777net book scanners","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"Abq45tARvt\"><a href=\"https:\/\/book2net.net\/en\/2021\/06\/07\/apochromat-apochromatic\/\">Apochromat \/ apochromatic<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/book2net.net\/en\/2021\/06\/07\/apochromat-apochromatic\/embed\/#?secret=Abq45tARvt\" width=\"600\" height=\"338\" title=\"&#8220;Apochromat \/ apochromatic&#8221; &#8212; book\u2777net book scanners\" data-secret=\"Abq45tARvt\" 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":"When light passes through an optical system (lenses made of glass), so-called \"color errors\" can occur. In this phenomenon, for example, white light is refracted into its components, which also explains the play of colors on glass edges when exposed to sunlight. A similar phenomenon is known from water surfaces, and rainbows are also basically based on this principle."}