Path: utzoo!attcan!uunet!cs.utexas.edu!oakhill!dover!talent
From: talent@dover.sps.mot.com (Steve Talent)
Newsgroups: comp.graphics
Subject: Re: synthetic -> hologram
Message-ID: <1746@dover.sps.mot.com>
Date: 24 Aug 89 16:16:36 GMT
References: <4791@portia.Stanford.EDU>
Reply-To: talent@dover.UUCP (Steve Talent)
Organization: Motorola Semiconductor CAD -- Mesa, AZ
Lines: 19

In article <4791@portia.Stanford.EDU> rick@hanauma (Richard Ottolini) writes:
>
>Plate #22 in Upstill's RenderMan companions is the "shattered globe" image
>that recently appeared as a National Geographic cover hologram.
>Could someone explain how this synthetic image was converted into a hologram?
>Thanks.

The issue of National Geographic with the hologram on the cover uses a real
hologram.  There's an explanation of how the hologram was created on the 
inside back cover of that issue.

The image is actually a double exposed hologram - one image of the globe in
freefall exposed by a pulsed laser, the second image was taken while the 
globe was being shattered from the impact of a BB fired from an air rifle.

Check it out!  It's fascinating... and expensive to produce.
-- 
Steve Talent, Motorola Semiconductor Products Sector CAD
Mesa, AZ  602-994-6801,  ...!{oakhill, sun!sunburn, uunet}!dover!talent