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Nov26-11, 03:56 PM
I am learning about refraction and the million ways in which Snell's Law is presented to me is making me confused...
So, I understand that:
sin i / sin r, will give me the ratio of speeds ci/cr and λi/λr
However, I can't understand this form of:
n1sin i = n2 sin r
How does it drop out?
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