Calculating the degree of polarization of reflecting light

AI Thread Summary
The discussion focuses on finding an equation to calculate the degree of polarization of reflected light based on the angle of incidence and refractive indices. It references Brewster's angle, where light is fully polarized at approximately 53 degrees when reflecting off water. The participants suggest that the degree of polarization can be derived from Fresnel and Snell's equations. The complexity of the formula increases when considering birefringent and absorbing materials. Overall, the conversation seeks a precise equation for practical applications.
kaasisdebaas
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I am looking for in an equation that's spits out the degree of polarization of reflected light, with incidence angle and the refractive indexes as inputs.
an article online article had this graph decribing the degree of polarization as a value between 0 and 1 plotted against the angle of incidence.
EWsls.png

This is related to Brewsters angle, where light with an incidence angle of around 53 degrees is completely polarized when reflecting off water. my guess is that the above graph can be deduced from Fresnel/Snells equations.
Any help finding an exact equation is appreciated.
 
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This depends also on the material. The most general formula for birefringent and absorbing minerals is exceedingly complex.
 
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