ext_88132 ([identity profile] cheshirenoir.livejournal.com) wrote in [personal profile] cheshirenoir 2010-07-09 07:32 am (UTC)

http://en.wikipedia.org/wiki/RealD_Cinema

Circular polarised. That's why you can tilt your head. Having used ones that are plane (Or linearly polarised if you prefer) polarised, there is a WORLD of difference.

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