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From: gnome@olivee.UUCP (GNOME)
Newsgroups: net.periphs,net.research,net.graphics
Subject: Re: volumetric displays
Message-ID: <486@olivee.UUCP>
Date: Thu, 19-Sep-85 17:27:33 EDT
Article-I.D.: olivee.486
Posted: Thu Sep 19 17:27:33 1985
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Xref: watmath net.periphs:859 net.research:228 net.graphics:1126

>   A book, published in '66, mentions a "volumetric display" and
> describes such an animal in this way.  Suppose you took a fishtank
> and filled it with some phospor with a non-linear excitation response.
> You could then pass two lasers through this medium at half the 
> required triggering intensity, and thus excite any point in this
> volume by intersecting the beams.  The book continues to state that
> no one had yet done this.  
>
Well, it isn't really the same but I had some success with a spinning
screen (wire grid) and an x/y deflected and modulated laser.  Bad
part is the velocity needed to get a complex figure drawn.

Looked neat though.

Gary
 


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