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From: talent@dover.sps.mot.com (Steve Talent)
Newsgroups: comp.graphics
Subject: Re: What's a hologram?
Summary: definition
Keywords: hologram
Message-ID: <1747@dover.sps.mot.com>
Date: 25 Aug 89 16:42:56 GMT
References: <4791@portia.Stanford.EDU> <1746@dover.sps.mot.com> <2330@ucsfcca.ucsf.edu>
Reply-To: talent@dover.UUCP (Steve Talent)
Organization: Motorola Semiconductor CAD -- Mesa, AZ
Lines: 23

In article <2330@ucsfcca.ucsf.edu> root@cca.ucsf.edu (Systems Staff) writes:
>
>I see some quite different things being called "holograms" and
[stuff deleted]
>Can someone who really knows what's going on shed a litlle light?

holos- from Latin, Greek meaning whole or complete
-gram  from Latin, Greek meaning record.

hologram = complete record

A hologram is a device that records a whole image.  That is, when you view
a hologram you are viewing a reconstruction of the light waves reflected from
the object when the hologram was recorded.

[disclaimer - I am not an expert in this field but I did a lot of reading and
some experimentation as a student (1972-1980)]



-- 
Steve Talent, Motorola Semiconductor Products Sector CAD
Mesa, AZ  602-994-6801,  ...!{oakhill, sun!sunburn, uunet}!dover!talent