I am at various times an engineer, an optical designer, a mathematician, and a physicist.
My work includes:
Modeling complex physical systems and processes, including structural analysis, thermal analysis and heat transfer, ac/dc electrical
analysis including current spreading and joule heating, and electro
and magneto statics.
Optical systems design, including lens design, illumination system
design, physical optics, and power coupling.
Mathematical modeling and analysis, including development of general differential/algebraic linear and nonlinear models, data analysis,
I have been using Mathematica since Version 2.1. While I have specialized tools for optical design and finite element analysis, Mathematica is my Swiss Army Knife. I use it for theory, modeling, data reduction and analysis, graphics, . . . . The only thing I can't do with it is remove wallpaper. That still requires a steamer.