A little bit of Holography

Yuri Endo 2012

The theory of Holography was initially developed by British Hungarian Scientist, Dennis Gabor,  while working to improve the resolution of an electron microscope in the late 1940's. For this work, he won the Nobel Prize for physics in 1971.

Gabor coined the term "holography"  from the Greek words;  holos, meaning "whole," and grapho, meaning "message" and once they are combined, it means  "complete record of the image."

Holography is a technique which enables three-dimensional images to be made from two-dimensional surfaces. More precisely, a hologram ( holograph)  is an image created via exposure of a photosensitive material  to the light interference pattern caused by two laser light sources reflect on an object, thus making the image appear three-dimensional. (Under the use of a laser, interference, diffraction, light intensity recording and suitable illumination of the recording.) 

Unlike photographic image, the holographic image carries the complete information on three-dimensional structure of the object, in other words,  the holographic image changes as the perspective of a view-master in the same exact manner as if the object were existed in reality. However, if we try to touch the image, all we would find is mere focused light.

Today holograms are widely used for various purposes, such as security application ( credit cards, bank notes), product packaging, fancy gifts, art, registration of artifacts, new technology aircraft and  automobiles.

Last but not least, Salvador Dalí claimed to have been the first to employ holography artistically.

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