3-D polarized slide show

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From: MC elover (mcelover@yahoo.com)
Date: Thu Dec 16 1999 - 12:52:32 PST 

Message-ID: <19991216205232.9389.qmail@web903.mail.yahoo.com>
Date: Thu, 16 Dec 1999 12:52:32 -0800 (PST)
From: MC elover <mcelover@yahoo.com>
Subject: 3-D polarized slide show

hello pinholers and funkateers,

the castro theatre recently showed Dial M for Murder
in 3-D. according to a poster outside the theatre,
hitchcock used 2 cameras to film the movie. then each
of the two films was projected simultaneuously on the
screen through orthagonal polarizing filters. the
audience wore polarized 3-D glasses to make sure that
each eye only saw one film, thus acheiving the desired
stereoscopic effect.
i was wondering if it would be possible to do the same
thing with slides, using 2 slide projectors. has
anyone tried this or seen it done? Also, if i send a
beam of polarized light at a screen, will it come back
polarized? if not, how did the hitchcock thing work?

keep the funk alive
--eric

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