Seven equations that rule your world – physics-math – 13 February 2012 – New Scientist
http://www.newscientist.com/article/mg21328516.600-seven-equations-that-rule-your-world.html
http://www.newscientist.com/articleimages/mg21328516.600/1-seven-equations-that-rule-your-world.html
wave eqn., FFT, 4 Maxwell Eqn. , Schrodinger Eqn