So if you want to understand the average behavior of that system you need to sample at a much larger spatial scale over larger time intervals than was previously appreciated. (newscenter.lbl.gov)
Control engineering — It is concerned with the study of mathematical modeling of the dynamic behavior of systems which is used in designing them. (instantassignmenthelp.com)
The Schrödinger Equation is the foundation of quantum mechanics: It describes the non-intuitive behavior of systems at atomic and subatomic scales. (caltech.edu)