From: pireddag@hotmail.com   
      
   Am 13.01.2019 um 23:22 schrieb alex:   
   > On Sunday, January 13, 2019 at 11:07:52 PM UTC+1, JTS wrote:   
   >> Am 13.01.2019 um 23:06 schrieb JTS:   
   >>   
   >>>   
   >>> I do not know what is the best way of doing this measurement, but I do   
   >>> know how to test your method: measure the polarization of light directly   
   >>> out of the laser (attenuated if necessary).   
   >>   
   >>   
   >> Here I mean: of *a* laser whose polarization you are sure about.   
   >   
   > Thanks for the idea... I will give that a go tmrw, but I think it might be   
   harder tha it should be to find a laser whose polarisation we know... I'll let   
   you know...   
   > Thanks   
   > Alex   
   >   
      
      
   I think Phil Hobbs' suggestions are more precise than mine, but another   
   approach is - polarize the light with a polarizer (a polarizer with   
   1:100 ratio is good enough for this) and repeat your measurements. If   
   you can measure 1:100, it means the 1:20 you measured is ok.   
      
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