Do light waves refract the same amount when they enter water and leave water? Or it there some difference on the amount of refraction due to density or what-not?

Question

anonymous · Answer

If the entrance and exit planes are parallel, the incoming and outgoing angles should be the same.

anonymous · Answer

Actually, I just found out:

The third and fourth laws of refraction are demonstrated in figures 1 and 2 below.

When light passes from a substance of lower optical density to a substance of higher optical density the light is refracted at a smaller angle relative to to the normal.
When light passes from a substance of higher optical density to a substance of lower optical density the light is refracted a larger angle relative to the normal.

anonymous · Answer

the light waves will be affected.......

anonymous · Answer

I'm not sure whether the question has been resolved or not.... The answer to your original question is that they will refract the same amount, just in different directions relative to the normal to the surface.