When light passes from one medium to another, it goes through a few changes. Understanding these changes is not only a key scientific skill, but essential for some fish and fishing.
Describe and explain the changes which occur for a ray of light passing into and then out of a glass block at an angle. You must address the following points:
· What is the law of refraction?
· Compare the speed of light in air to that in glass.
· What significance does the density of the medium light is travelling in to the speed of light.
· How and why does the direction of light change when passing into a more/less dense medium with regards to the normal
You may find it useful to draw a diagram.