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Polarization
December 17 2003 at 5:04 AM		   (no login)
I was doing a little research on polarization and found a reference to Polariscopes, then researching polariscopes I found something very interesting. With a 1/4 wave plate and a polarizer you can see the stesses in glass due to manufacturing (if I am reading it right). Now, I wonder what the orentation of this stress and the polarization of the light (different at the different stress points) and woodgrain all have in common.

http://www.rudolphinst.com/stress_measurement_methods.html
 
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