1.0Learning & Education Portalhttps://astan.lk/al_virtualclassroomAdminhttps://astan.lk/al_virtualclassroom/author/astan-preceptor1/Electromagnetic waves - Learning & Education Portalrich600338<blockquote class="wp-embedded-content" data-secret="5SCLzKyW1N"><a href="https://astan.lk/al_virtualclassroom/electromagnetic-waves/">Electromagnetic waves</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://astan.lk/al_virtualclassroom/electromagnetic-waves/embed/#?secret=5SCLzKyW1N" width="600" height="338" title="“Electromagnetic waves” — Learning & Education Portal" data-secret="5SCLzKyW1N" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script type="text/javascript">
/* <![CDATA[ */
/*! This file is auto-generated */
!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);
//# sourceURL=https://astan.lk/al_virtualclassroom/wp-includes/js/wp-embed.min.js
/* ]]> */
</script>
The Electromagnetic radiations are a form of energy which are emitted and absorbed by the charged particles. These radiations exhibit the wave like behavior while it travel through the space. Electromagnetic waves have electric as well as magnetic field which are orthogonal to each other and also to the propagation of the waves. These radiations […]http://images.tutorvista.com/cms/images/101/electromagnetic-spectrum1.PNG