It had rained heavily the night before, creating a huge pool of water on the beach whose fantastic reflection of the changing sky made us feel we were standing at the edge of the world.

Using reflection polarizing microscopy to compensate the natural optical activity, along the optical axis, we obtained the images of edge dislocations and compared it with the calculation.

Compared with the real edge generated when parallel beam illuminates an object, the virtual edge between bright and dark areas in the phenomenon of total reflection is more complex.