Nodal Analysis
A while ago somebody decided to tell me I couldn't possibly write a PHP script to solve linear electric networks. I decided to prove that person wrong and a few hours later this dropped out of the box. The result a PHP class named Nodal Analysis that can be found at phpclasses.org. While it's not exactly a display of good coding style (almost no comments) it should get the job done. The methods used are rather simple and as such I'm not going to bother explaining them. Lets just say it can be summed up in: Y Bus Matrix, Nodal Analysis, Gauss-Jordan, Duct Tape. Going to rewrite it before the end of the summer, first going to write a small article on how to do nodal analysis by hand since that is the main question I have received weirdly.