Physics, Science, Electrodynamics, Electromagnetic Waves, STEM.
z. Thus, without the exponents being equal, there is no way for the above equality to be satisfied. Since the frequency is equal, the temporal parts are already equal, and we are left with the spatial part. That is, kᵢ . r = kᵣ . r = kₜ . r. Given that z = 0 at the interface, this equation is