I feel rather stupid for not understanding this, but it's really thrown me for a loop, so any help would be greatly appreciated!(adsbygoogle = window.adsbygoogle || []).push({});

A ray of light is incident at 45 degrees on an equilateral glass prism (n=1.5).

So far, I have determined the angle of refraction to be 28.135 degrees, using Snell's Law of course, and the measures of several arbitrary internal angles using basic geometry, including what I believe to be the second angle of incidence, at 31.865 degrees. What has me stumped is the angle of refraction back out of the prism. Snell's Law fails me here, and I do believe it is because I'm overlooking something about the dispersion of the light into its component colors... but I have no idea what to do, because other than the fact that red bends the least and violet bends the most, I don't understand dispersion... a nudge in the right direction would be awesome, please

Thank you!

-Dani

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# Homework Help: Dispersion, prisms, etc

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