Holography Essay

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Holography While working to improve the resolution of an electron microscope, a brilliant man named Dennis Gabor had developed a theory on Holography. This dates back to the year of 1947. Dennis Gabor is a British/Hungarian scientist who created the word Holography from Greek terms. He used the word holos, meaning "whole," and gramma, meaning "message." Gabor characterized his work as "an experiment in serendipity" that was begun too soon. The next decade brought about frustration in Holography because light sources available at the time were not coherent. In 1960 a breakthrough came forth. The invention of the laser had pure and intense light that was well suited for the making of holograms. Emmett Leith and Juris Upatnieks…show more content…
The staple of holographic methodology is the basic of the off-axis technique. The creation of a hologram is quite extensive. "A beam of laser light is visually separated into two beams. One, the reference beam, is directed toward a piece of holographic film and expanded (its diameter increased) so that the light covers the film evenly and completely. The second (object) beam is directed at the subject of the composition and similarly expanded to illuminate it (Vacca, 16)." The object beam carries information about the location, size, shape, and the texture of the subject when the object beam reflects off of it. "Some of this reflected object beam then meets the reference beam at the holographic film, producing an interference pattern which is recorded in the light sensitive emulsion (Vacca, 16)." The hologram is illuminated at the same angle as the reference beam during the original exposure to reveal the 3-D image after the film is developed. Another great experiment that occurred in 1962 was by Dr. Uri N. Denisyuk of the U.S.S.R. He combined Holography with natural color photography. Natural color photography was created by Nobel Laureate Gabriel Lippman in 1908. Denisyuk's approach produced a white-light reflection hologram that could be viewed in light from an ordinary incandescent light bulb. Dr. T.H. Maimam of the Hughes Aircraft Corporation developed the pulsed ruby laser in 1960. This
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