Read e-book online Annals of Pure and Applied Logic, Volume 152, Issues 1-3, PDF

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Extra info for Annals of Pure and Applied Logic, Volume 152, Issues 1-3, Pages 1-180 (March 2008)

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They can range in size from a few square inches to four-by-eight feet, and can produce images of great depth and projection. In a recent breakthrough, the larger sizes offer the best type of holography for display applications (especially when exhibiting large pieces of equipment). They can be either monochrome when illuminated with a laser or arc lamp, or multicolored when lit with a white light source. REFLECTION HOLOGRAMS Another type of display holography lit from the front is known as reflection holograms.

3674 P-01 3/5/01 10:40 AM Page 11 PRACTICAL HOLOGRAPHY 11 Pulsed Laser Holography The images that can be used to make holographic displays are produced by bursts from a pulsed laser. The rapid pulse, or burst, of laser energy lasts only 20 billionths of a second, yet is powerful enough to expose the sensitive holographic plate. Holograms can be made of people, scenes, and very large objects using this technology. In addition, the stop action nature of the pulsed laser allows the 3D rendition of objects in flight or in motion.

When asked about the success of the programs, few companies would respond, but many are using holography a second and third time. Because of the rapid burst of laser light, composite holograms can be made of machinery or other products in motion. Because of the great depths that can be hologrammed, entire rooms and scenes can be brought to the viewer. Scenes too dangerous for anyone to visit, even as dangerous as the inside of a nuclear reactor, can be hologrammed and studied or displayed. The pulsed laser, although costly and requiring special knowledge for handling, is fast becoming an important tool with which holographers can aid marketers and designers in the realization of their visions.

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Annals of Pure and Applied Logic, Volume 152, Issues 1-3, Pages 1-180 (March 2008) by Elsevier

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