I don't understand Snell's law, can someone explain it?

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music_lover12
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Okay, so I've tried doing some research about Snell's Law, and I haven't been able to find information that I actually understand. Could someone explain this to me in terms that will help me?
 

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think of a marching band.

when parts of the marching band slow down, see what would happen. Draw a whole bunch of snapshots of what would happen (as a function of time) and you will completely understand snell's law.
 
And read some of this,

http://en.wikipedia.org/wiki/Snell's_law
 
tim_lou said:
think of a marching band.

when parts of the marching band slow down, see what would happen. Draw a whole bunch of snapshots of what would happen (as a function of time) and you will completely understand snell's law.

http://www.lhup.edu/~dsimanek/scenario/analogy.htm

that's a terrible way to understand it.

i have a really good explanation of christian hygen's wavelet theory and that translates to an understanding of snell's law. but really since it not what actually happens anyway i would just take it for granted until you get to the quantum explanation
 
We cannot give it to you in terms is you understand unless you indicate what you have already read and why you don't understand it.

Claude.