**Pre Reqs:** [Intro to Forces](http://scienceblogs.com/dotphysics/2008/09/basics-what-is-a-force.php), [Vectors](http://scienceblogs.com/dotphysics/2008/09/basics ...
The quantum many body problem has been at the heart of much of theoretical and experimental physics over the past few decades ...
How do cells know what they should become as the body develops? Biological development depends crucially on spatial patterns: ...