SECTION 2
Round Medium

Total Internal reflection of light occurs when light traverses from a heavier medium through a lighter medium.

Round Medium

When light traverses through a round medium, multiple total internal reflection may be observed.

Here you can see light being totally internal reflected at A, and traverses to B

In this laser photo, light is total internal reflected at two points, A and B, traversing to C.

In both photos, a thin beam of laser light passes through a cylindrical glass containing murky water.