(function() { (function(){function c(a){this.t={};this.tick=function(a,c,b){var d=void 0!=b?b:(new Date).getTime();this.t[a]=[d,c];if(void 0==b)try{window.console.timeStamp("CSI/"+a)}catch(l){}};this.tick("start",null,a)}var a,e;window.performance&&(e=(a=window.performance.timing)&&a.responseStart);var h=0=b&&(window.jstiming.srt=e-b)}if(a){var d=window.jstiming.load;0=b&&(d.tick("_wtsrt",void 0,b),d.tick("wtsrt_","_wtsrt", e),d.tick("tbsd_","wtsrt_"))}try{a=null,window.chrome&&window.chrome.csi&&(a=Math.floor(window.chrome.csi().pageT),d&&0=c&&window.jstiming.load.tick("aft")};var f=!1;function g(){f||(f=!0,window.jstiming.load.tick("firstScrollTime"))}window.addEventListener?window.addEventListener("scroll",g,!1):window.attachEvent("onscroll",g); })();

Monday, December 03, 2007

Betelgeuse, etc


This is a very well done little tutorial on identifying elements in the night sky. Try it with your kids. The real test, of course, is to do it outside. Not so easy in an area like this, where light pollution prevails.

0 Comments:

Post a Comment

Links to this post:

Create a Link

<< Home