Word: vectograph
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Dates: during 1940-1949
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...feature of the exhibit is the "Vectograph," a three-dimensional picture taken from the air, which, viewed with the naked eye, seems to be a blurred photograph, but which appears as a revealing photograph in three dimensional detail, when seen through a special polaroid viewer. Supplementing the 16-poster display is a set of pictures describing the officers' programs in the Yard...
Polaroid Corp. has an even more erudite scheme which will make use of the full standard-screen size and shape, will require no accessory beam splitter or double projector. In the vectograph, a Polaroid patent, the two pictures, one for each eye, are printed over each other on the same photographic film or paper. Incorporated with them is the polarizing material. When viewed with Polaroid glasses the picture is fully three-dimensional in ordinary light. When thrown on a screen from an ordinary projector the pictures are automatically polarized by the film, thus need only the viewing glasses...
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