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From: msc@saber.UUCP (Mark Callow)
Newsgroups: net.sci,net.rec.photo
Subject: Re: Holograms at Disneyland
Message-ID: <1877@saber.UUCP>
Date: Mon, 2-Dec-85 18:19:04 EST
Article-I.D.: saber.1877
Posted: Mon Dec  2 18:19:04 1985
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Organization: Saber Technology, San Jose, CA
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> there is a segment of the haunted ride where you are taken by a large
> picture window, through which you can see a bunch of ghostly figures
> dancing around a gothic banquet hall. This has to be done by holograms;
> I can't see any other way they could have gotten those 3-D images. Also
> the fact that you have to see it through a tinted-looking window 
> suggests that this is a hologram.

It sounds to me more like the very old "pepper's ghost" illusion which
was described by somebody else in a recent article (though he didn't
refer to it by that name).  This has been used for years by stage
magicians.  Since what you are seeing is the reflection of a person
(animated models in Disney's case), it is three-dimensional.  The
"tinted looking window" merely helps to hide the important piece of
glass doing the reflecting.

You don't have to have high-tech to produce amazing results.
-- 
From the TARDIS of Mark Callow
msc@saber.uucp,  sun!saber!msc@decwrl.dec.com ...{ihnp4,sun}!saber!msc
"Boards are long and hard and made of wood"