Bending the light - physics experiment

Physics Experiment

For this experiment we need:

   - Empty bottle
   - Water
   - A laser pointer

This  experiment show the total internal reflection.
We get the total reflection if the light enters to an optical less dense material and the incidence angle is big enough.

The incidence angle at which the ray refracts exactly along the boundary line, is called the boundary angle of the total reflection. With the total reflection we can lead the light along the curved ways, as optic fibres or water jets.