Described yes, but 100% accurately modeled? ??? That is an interesting philosophical question that IZZ has brought up. Economists try every day to model the economy with mathematics, but it would be impossible to model the economy with 100% accuracy with math. If someone were able to come up with such a model they would be infinitely rich. The schrodinger eq. can only be solved for the H atom or H-like atoms. The QM models that describe other atoms etc. are just approximations( pretty good ones though) and therefore are not 100% accurate. so yes, i do agree with izz to some extent.Anything can be described mathematically (if one wished to do so)... Give me an example of something you can't describe with math Izzhov... physically preferably, although anything works but it becomes silly to describe a painting with math, but computers do it every time you look up an image on google I bet.