Random walk

Last night, I was awaken at 4:30am by an important aspect of research which is actually not enough addressed in the templates of scientific project proposals. For example, I noticed that even Horizon 2020 of the European Union is rather limiting safety...

The problem At the interface with a slab material, a monochromatic wave experiments a reflection and a refraction as well described by the well-known Snell-Descartes law as follows for air environment \[ \sin \theta_i = n \sin \theta_r, \] where $\theta_i...