His mathematical theory explains known electromagnetic phenomena and predicts new ones.
The distress call was patchy and disrupted by some electromagnetic phenomenon, which is not surprising.
Well, sir, no, we've faced far stronger electromagnetic phenomena before without any problem.
For example, refractive index is an electromagnetic phenomenon which occurs at the surface (or interface) between two materials.
The term is also used to refer to the electromagnetic phenomena themselves.
While building electromagnets, Henry discovered the electromagnetic phenomenon of self-inductance.
Therefore, establishing this relationship provided convincing evidence that light is an electromagnetic phenomenon.
By adding this new term to the known equations he managed to describe all macroscopic electromagnetic phenomena.
Several theorists have proposed that consciousness can be understood as an electromagnetic phenomenon.
The favoured theory right now is some internally powered electromagnetic phenomenon.