How Does Polarization by Reflection Determine the Refractive Index of Glass?

AI Thread Summary
Unpolarized light at an angle of 37.5° strikes a glass surface, and the polarization of reflected light is analyzed using a Polaroid, revealing a maximum to minimum intensity ratio of 4.0. The discussion centers on using Fresnel's equations to determine the refractive index of the glass based on this intensity ratio. There is a suggestion that the question may be better suited for a homework help forum. The thread is ultimately locked due to its placement in the homework forums. The focus remains on understanding the relationship between light polarization and refractive index calculations.
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Unpolarized light falls on an angle of 37.5 ° with a plan glass surface. The reflected light polarization is examined with a Polaroid. The ratio between maximum and minimum intensity from Polaroid when it is rotated around is 4.0. Which is the refractive of index glass?

I would like to use the equation which relates the Intensity with the incident angles with the refraction angle. But doesn't really find out how.
 
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DrDu said:
The relevant equations are Fresnel's equations:
http://en.wikipedia.org/wiki/Fresnel_equations
Are you sure that this question is not more apt for the homework help forum?

Oh sorry, of course. Wont happen again. Thank you.
 
Since the OP has posted the question in the homework forums, I am locking this thread.
 
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