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'''Snell's Law''' describes how the direction of [[light]] changes when it moves from one medium to another.
'''Snell's Law''' describes how the direction of [[light]] changes when it moves from one medium to another.
What Snell's Law says is that when light moves from a medium with a high index of refraction to a medium with a low index of refraction it will bend away the normal of the plane dividing the two media. Conversely, when light moves from a medium with a low index of refraction to a medium with a high index of refraction it will bend towards from the normal dividing the two media.
What Snell's Law says is that when light moves from a medium with a high [[index of refraction]] to a medium with a low index of refraction it will bend away the normal of the plane dividing the two media. Conversely, when light moves from a medium with a low index of refraction to a medium with a high index of refraction it will bend towards from the normal dividing the two media.
The two forms of the law are:
The two forms of the law are: