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"the [science fiction] writer should be able to convince the reader (and himself) that the wonders he is describing really can come true...and that gets tricky when you take a good, hard look at the world around you."
- Frederik Pohl

Solidograph  
  Long distance projection of three-dimensional images.  

Today, we'd call it a hologram.

I suppose itís quite proper for me to tell you about the telesolidograph. Itís simple, really. The Hierarchyís solidograph is a three-dimensional motion picture. The telesolidograph is the same sort of thing, except that the primary multiple-beam is invisible, long-range, and highly penetrating, only erupting into a visible, three-dimensional image when it reaches the focus. Slightly analogous to a needlepoint spray. So, for instance, if we want bare feet scampering around, or what not, we just fake a solidograph of them and feed the tapes into the projector. Phantoms to order! Vocal manifestations work in about the same way. ďThe instrument I used is a bit more complicated, of course. Two-way. Viewer and projector. So Iíd have a miniature image of the general focal region to guide me in operating my lifesize phantoms and manipulating the remote controls of the house.
Technovelgy from Gather, Darkness!, by Fritz Leiber.
Published by Astounding Science Fiction in 1943
Additional resources -

James Matheson describes it this way in The Bureaucrat (1944):

Far down in the pit Benton could see a huge swirling ball of vapor, glittering with pinpoints of varicolored lights cast upon it by unseen projectors. That would be the ultra-secret Battle Integrator ó the marvelous moving solidograph that resolved six dimensions into four.

Another early reference, often cited, appears in H. Beam Piper's Police Operation:

In the middle of this appeared a small solidograph image of the interior of the conveyor, showing the desk, and the control board, and the figure of Verkan Vall seated at it. The little figure of the storm trooper appeared, pistol in hand.

Compare to the solido from Chance of a Lifetime (1956) by Milton Lesser, the solido projector from Dune by Frank Herbert and the solidograph from The Bureacrat (1944) by Malcom Jameson.

Compare this term to the idea of a stereoscopic television, or stereo tank, in Robert Heinlein's later story Stranger in a Strange Land.

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Additional resources:
  More Ideas and Technology from Gather, Darkness!
  More Ideas and Technology by Fritz Leiber
  Tech news articles related to Gather, Darkness!
  Tech news articles related to works by Fritz Leiber

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