### Using MathJax to write equations on blogs

So i just installed mathjax and i want to check it out and see if it works $x^n + x_n = 5$
and $$a*b*c = x^a + y^b$$

And it works!
So, MathJax is a java script which can be used to write beautiful equations using TeX on websites. Read this blog post  for the installation process. Apparently there are two ways of going about it.
One is to install MathJax on the server where your website is hosted.
The other, especially in the case of blogs, is to add a certain script to the html template of the blog.  The setup instructions for a blogger site have been mentioned and i'm sure the parallels on WordPress and Tumblr can be figured out without much trouble.

Using this in the coming blogposts should be fun :D

### Animation using GNUPlot

Animation using GNUPlotI've been trying to create an animation depicting a quasar spectrum moving across the 5 SDSS pass bands with respect to redshift. It is important to visualise what emission lines are moving in and out of bands to be able to understand the color-redshift plots and the changes in it.
I've tried doing this using the animate function in matplotlib, python but i wasn't able to make it work - meaning i worked on it for a couple of days and then i gave up, not having found solutions for my problems on the internet.
And then i came across this site, where the gunn-peterson trough and the lyman alpha forest have been depicted - in a beautiful manner. And this got me interested in using js and d3 to do the animations and make it dynamic - using sliders etc.
In the meanwhile, i thought i'd look up and see if there was a way to create animations in gnuplot and whoopdedoo, what do i find but nirvana!

In the image, you see 5 static curves and one dynam…