1.0Light is beautifulhttp://lousodrome.net/blog/lightJulien Guertaulthttp://lousodrome.net/blog/light/author/admin/rich600338<blockquote class="wp-embedded-content" data-secret="7HQFDEXV55"><a href="http://lousodrome.net/blog/light/2014/12/15/more-schlieren-photography/">More schlieren photography</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="http://lousodrome.net/blog/light/2014/12/15/more-schlieren-photography/embed/#?secret=7HQFDEXV55" width="600" height="338" title="“More schlieren photography” — Light is beautiful" data-secret="7HQFDEXV55" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script> /*! 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=http://lousodrome.net/blog/light/wp-includes/js/wp-embed.min.js </script> I previously mentioned a video showing how schlieren photography could be used to film the propagation of sound. This video by the Harvard Natural Science Lecture Demonstrations, presents different experiments with schlieren photography. The complete description of the setup used, … Continue reading →