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Term - Crossed polarization


Crossed polarization SWPP and BPPA Photographic Glossary

Wednesday 22nd October 2014  




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Crossed polarization

System of using two polarizing filters, one over the light source and one between the subject and the lens. With certain materials crossed polarization causes bi refringent effects which are exhibited as coloured bands. Used in investigations of stress areas in engineering and architectural models.



 

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