Re: [Phys-l] index of refraction

[Brian Whatcott <betwys1@sbcglobal.net>]

Paul Lulai wrote:
> For each liquid, they could measure multiple angles, plot sin(theta-i) vs sin(theta-r), From the plot they could determine if y-intercept or slopes have any meaning.  This would have a better influence if different groups measured these angles for different materials (or each group did this for multiple materials).
>
> That would make it a fairly productive lab.  Additionally, they could calculate % difference btn their values and the 'accepted' values.  
>
> That would be my h.s. approach.  Curious if there is a more high-falutin college or industrial approach.
>
> Paul Lulai
>   
Here's a write up on the temperature and concentration dependence of 
the refractive index of liquids from Subedi at Kathmandu U., Nepal.    
Not sure how novel his hollow prism  method is - but as he reports, it's 
simple and straight-forward.

<http://www.ku.edu.np/kuset/second_issue/o2/DEEPAK%20SUBEDI.pdf>

Refractive index of sodium hypochlorite solutions is not usually 
reported (possibly because the material is evanescent?) but you might 
initially estimate a linear relation between
concentration by weight and n = 1.33 to 1.53
Brian W