{"version":"1.0","provider_name":"Keynotes@HKU","provider_url":"https:\/\/www.keynotes.hku.hk\/tc","title":"When Light Goes Round the Bend - Keynotes@HKU","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"NeLo2HapmL\"><a href=\"https:\/\/www.keynotes.hku.hk\/tc\/story\/when-light-goes-round-the-bend\/\">\u7576\u5149\u5b78\u61c2\u5f97\u300c\u6025\u8f49\u5f4e\u300d<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.keynotes.hku.hk\/tc\/story\/when-light-goes-round-the-bend\/embed\/#?secret=NeLo2HapmL\" width=\"600\" height=\"338\" title=\"When Light Goes Round the Bend &#8212; Keynotes@HKU\" data-secret=\"NeLo2HapmL\" 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:\/\/www.keynotes.hku.hk\/wp-includes\/js\/wp-embed.min.js\n<\/script>","thumbnail_url":"https:\/\/www.keynotes.hku.hk\/wp-content\/uploads\/2026\/02\/ControllingLight.jpg","thumbnail_width":1920,"thumbnail_height":1080,"description":"Imagine shining a flashlight into a material and watching the light bend backward, or in an entirely unexpected direction, as if defying the law of physics. This phenomenon, known as negative refraction, could transform imaging, telecommunications, and countless other technologies. Now, a team of scientists led by Professor Xiang Zhang, HKU President and Vice-Chancellor and [&hellip;]"}