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The traditional way of taking a three-dimensional photograph, or hologram, involves splitting a laser beam in two, reflecting one half (known as the object beam) off the thing that is to be holographed, and then recombining it with the other half (known as the reference beam) and exposing a photographic film to the result.
The process of recombination produces an interference pattern that is recorded on the film, and when this pattern is viewed in suitable lighting, an image that looks three-dimensional becomes visible to the eye.
It may be possible to use holographic techniques to place data in a 3-D format that will exponentially increase the efficiency and accessibility of storage -- up to a terabyte (1,000 gigabytes) of data on a CD-sized disk. By comparison, DVDs have a storage capacity of less than 20 gigabytes.
Posted in 21st Century Technoid Man, The NO DEAD TREES Collection
Storing Data in a Hologram
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