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OpenStudy (anonymous):

In the illustrious study of refraction, what is the critical angle?

OpenStudy (anonymous):

I'm sorry for such a googleable question, but it's exam season so I have to restrict how much I am allowed to think, for god forbid if I wanted to know something OUTSIDE the syllabus.

OpenStudy (anonymous):

this site should have an excellent explanation to your question - http://www.physicsclassroom.com/class/refrn/u14l3c.cfm , have fun!!!!

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