Gabor Develops the Basic Concept of Holography (Great Events from History II: Science and Technology Series)
Article abstract: Gabor created a lensless system of three-dimensional photography, which is one of the most important developments in twentieth century optical science.
Summary of Event
Since 1900, the recording of images using the technique of photography has been commonplace. The optical lens had been in use for several centuries and the formation of images using lenses was well understood. The development of photography in the early 1900’s increased greatly the importance of the lens to the scientific community. Combining the optical lens and the process of photographic emulsion made possible the recording of events and information in a way unknown before the twentieth century: photographing star clusters, recording emission spectra of heated elements, storing data in the form of small recorded images (for example, microfilm), photographing microscopic specimens, and many others. Because of its vast importance to the scientist, the science of photography has developed steadily.
An understanding of the photography process and of the holographic process requires some clarification of the wave behavior of light. Light is an electromagnetic wave which, like a water wave, has an amplitude and a phase. The amplitude corresponds to the wave height, while the phase indicates which part of the wave is passing a given point at a given time. A cork floating in a pond bobs up and down as waves pass under it. The...
(The entire section is 2026 words.)
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