Refraction at Home

For this simple experiment, you will need:

a big transparent jar full of water.

a light torch.

Put the jar of water on a table.
Switch off the lights in the room .
Shine the torch at an angle with the normal the surface of the water.

What do you see?

If the laws of physics are still true, you should see that the beam changes direction when it hits the air-water interface: the angle between the normal and the beam of light decreases.

The bending of the light is due to a change in speed of the wave as it enters the different substance or material.

Let's look at the fizzicks of refraction...