I don't quite understand this, I understand that given a wave traveling in a certain direction, it will be polarized in the direction its not travelling in, so if its travelling in the Z direction, k will be in x,y direction (polarization)
Now what i don't understand is that, if the wave is polarized in all 3 directions, x,y,z. which way will it travel?
also, for Tranverse magnetic, why is there no electric field normal to the plane of incidence?
i know this might be stupid, but what is the purpouse or use of polarization of a wave, in class we were just taught that a wave can be polarized, they never indicated why is the use of it.
Please help, thank you in advance