Does total internal reflection follow the laws of reflection?

Answer 1

Yes, 100% reflection occurs to light approaching the intra-media boundary at some angles. When light passes from a more dense medium to one that is less dense it bends away from the normal (the imaginary line perpendicular to the boundary where the transfer happens). So there is an angle of incidence corresponding to a beam that is refracted to 90° from the normal. If the angle of incidence is even more shallow than that, total internal reflection occurs. If you look at the surface of the water in an aquarium from next to the aquarium just below the water's surface, it's just like a mirror. Since the amount of refraction is proportional to the difference between the refractive indexes of the media, much more total internal reflection happens in substances with much higher refractive indexes, like diamonds, accounting for the glistening.

Answer 2

No, total internal reflection does not follow the laws of reflection. Total internal reflection occurs when a wave strikes a boundary with a less dense medium at an angle greater than the critical angle, causing the wave to reflect back into the original medium instead of refracting through. This phenomenon is specific to waves propagating from an optically denser medium to a less dense medium.