via http://www.wired.com/wiredscience/2011/11/equations-for-geeks/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+wired%2Findex+%28Wired%3A+Index+3+%28Top+Stories+2%29%29&utm_content=Google+Feedfetcher&pid=2364&viewall=true
