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Holography (from the Greek, Όλος-holos whole + γραφή-graphe writing) is the science of producing holograms; it is an advanced form of photography that allows an image to be recorded in three dimensions. The technique of holography can also be used to optically store, retrieve, and process information. It is common to confuse volumetric displays with holograms, particularly in science-fiction works such as Star Trek, Star Wars, Red Dwarf, and Quantum Leap.
Overview
Holography was discovered over Easter, 1947 by Hungarian physicist Dennis Gabor (1900–1979), for which he received the Nobel Prize in physics in 1971. The discovery was an unexpected result (or serendipity as Dennis would say) of research into improving electron microscopes at the British Thomson-Houston Company in Rugby, England. The British Thomson-Houston company filed a patent on 1947-12-17 (and received patent GB685286), but the field did not really advance until the discovery of the laser in 1960.
The first holograms which recorded 3D objects were made by Emmett Leith and Juris Upatnieks in Michigan, USA in 1963 and by Yuri Denisyuk in the Soviet Union.
There are several types of holograms which can be made. The very first holograms were "transmission holograms", which were viewed by shining laser light through them. A later refinement, the "rainbow transmission" hologram allowed viewing by white light and is commonly seen today on credit cards as a security feature and on product packaging. These versions of the rainbow transmission holograms are formed as surface relief patterns in a plastic film, and they incorporate a reflective aluminum coating which provides the light from "behind" to reconstruct their imagery. Another kind of common hologram (a Denisyuk hologram) is the true "white-light reflection hologram" which is made in such a way that the image is reconstructed naturally using light on the same side of the hologram as the viewer.
More on [ Holography ]
Observation of asymmetrical pinning of domain walls in notched Permalloy nanowires using electron holography http://bit.ly/3SeFKv
techflypaper (Tech Flypaper) Fri, 06 Nov 2009 23:22:27 -0000
Observation of asymmetrical pinning of domain walls in notched Permalloy nanowires using electron holography http://bit.ly/3SeFKv
Mr. Fentz: Wonder what's next? Audience: Digital Ink? Holography? Mr. Fentz: Wonder if that will be as transformation as this was? #iDMAa09
madamson (madamson) Fri, 06 Nov 2009 17:22:38 -0000
Mr. Fentz: Wonder what's next? Audience: Digital Ink? Holography? Mr. Fentz: Wonder if that will be as transformation as this was? #iDMAa09
Holography expert gains international praise for his revolutionary work http://bit.ly/1w0dCD
DMUAlumni (De Montfort Alumni) Fri, 06 Nov 2009 10:04:57 -0000
Holography expert gains international praise for his revolutionary work http://bit.ly/1w0dCD
Touchable Holography. http://bit.ly/3tWIgl
microtoma (Tommaso Grande) Fri, 06 Nov 2009 09:46:04 -0000
Touchable Holography. http://bit.ly/3tWIgl
I favorited a YouTube video -- Touchable Holography http://bit.ly/5LJ9y
gvegayon (George Vega Yon) Thu, 05 Nov 2009 13:14:55 -0000
I favorited a YouTube video -- Touchable Holography http://bit.ly/5LJ9y
!! Look at this touchable holography ! http://bit.ly/AKIbL
ficgs (FICGS) Wed, 04 Nov 2009 23:38:31 -0000
!! Look at this touchable holography ! http://bit.ly/AKIbL
A Guide To Practical Holography - A detailed guide covering concepts of holography and how to create holograms.
Meta Description: [ HoloCom is dedicated to providing accurate information on Holography and varied topics. A Holography site run for and by the Holographic community. Holographers unite ! ]
Amateur Holography - Holography for amateurs and hobbyists.
Meta Description: [ Holography for amateurs and hobbyists ]
History and Development of Holography - Illustrated history of the invention and development of holographic imaging.
Meta Description: [ Holophile, Inc. is a marketing communications company
specializing in 3-dimensional imagery, including custom holograms, holography exhibitions and
Spectral Imagery (A unique presentation system that projects in thin air moving, 3-dimensional
images of people and special effects). ]
Holography Forum - A forum for holography-related ideas, experiences, and questions.
HoloWorld - Learn about the field of holography and how to make your own hologram. Includes a set of links to other sites related to holography.
Meta Description: [ Learn about the amazing field of lasers and 3-dimensional holograms. Since 1995. HoloTalk Laser and Holography Internet Radio Podcast TalkShow. ]
HyperPhysics - Concepts of holography from a physics perspective.
Images SI, Inc. - How-to articles and an online catalog for holography supplies.
Meta Description: [ Information and supplies for science fair projects regarding physics, computers, electronics and robotics.
featuring: electronics, robotics, speech recognition, geiger counters, ecoSpheres, nitinol, sma, pic, microcontrollers, picbasic, picbasic pro, and more. ]
Integraf - Instructions for creating your own hologram. Includes a link for purchasing holography kits and supplies.
Meta Description: [ Holographic film, plates, and resources to make holograms and teach holography ]
Kjell Einar Olsen - Scientific thesis on creating a holographic multi-stereogram constructed from computer images.
RPS Holography Group - Information and news about holography for professionals and the general public. Includes a forum and downloadable conference papers.
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Stony Brook Laser Teaching Center - Includes multiple student abstracts on holography and optics projects.
The Museum of Holography Chicago - A teaching and research facility specifically dedicated to displaying, promoting, and encouraging the advancement of holography.
Three Dimensional Imagery - Detailed instructions and diagrams for creating transmission and reflection holograms.
Meta Description: [ This site is for the person who wants to produce transmission and reflection display holograms, but doesn't know where or how to start. This site takes you step-by-step through building a holography system and producing these holograms. ]
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Zach's Cool Stuff - How to make holograms with a laser pointer.
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