Thursday, July 25, 2019
History of the hologram Essay Example | Topics and Well Written Essays - 250 words
History of the hologram - Essay Example Bassov and A. Prokhorov and American scientist Charles Towns, in 1960 (Johnston). Later on, the laser, producing a high level of coherent light source, was used in 1962 in Gaborââ¬â¢s experiment, and the scientists, Emmett Leith and Juris Upatnieks, produced a transmission hologram with a bird and toy train. It was a three dimensional hologram, which could only be seen with a laser. A reflection hologram was produced in the same year by Uri N. Denisyuk, to view which ordinary light was used instead of the laser beam. However, in 1968, Stephen A. Benton produced a transmission hologram which could be viewed in ordinary light like that of a bulb. Hence, the production of embossed holograms started on a massive scale. In 1972, a moving hologram was produced by Lloyd Cross, in which he marked sequential streams of moving objects onto a holographic film instead of the conventional picture film. Hence, the history of hologram starts back from
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