Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!uwm.edu!gem.mps.ohio-state.edu!apple!well!lmeyer
From: lmeyer@well.UUCP (lhary meyer)
Newsgroups: comp.graphics
Subject: Re: polarized film?
Message-ID: <14027@well.UUCP>
Date: 10 Oct 89 18:47:33 GMT
References: <475@alias.UUCP> <65539@tut.cis.ohio-state.edu> <1989Oct9.200000.29188@sj.ate.slb.com> <65904@tut.cis.ohio-state.edu>
Reply-To: lmeyer@well.UUCP (lhary meyer)
Organization: Whole Earth 'Lectronic Link, Sausalito, CA
Lines: 5


Yes you MUST use a silvered screen!!! A high gain screenfor a video projector
often works well. Put one polorizer on a flashlite and observe the beam from
the screen thru another polorizer. You should get excellent extinction if the
scrren is OK. Also angle alignment is critical to about 1 deg.