Holographic Definition
"Holographic" is an adjective often used in relation to holograms. A hologram is a 3-D image registered with use of coherent laser light.
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Optics
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Holography is the branch of optics that makes a hologram possible. The coherent laser light preserves the 3-D information of a holographic image with the source of a white light.
Uses
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Holographic images are commonly used in amusement parks for entertainment, as well as security applications and art installations. Leading technology aircraft and automobile companies can also use holograms in presentations.
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Types
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There are various types of holograms. Silver halide film, which is similar to camera film, is the oldest kind that is used commonly for wall images. A dichromate hologram is used in jewelry, such as holographic watches, and is made of gelatin.
Techniques
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There are different techniques used to make holographic images. A subject of a single-image hologram sits still and looks 3-D while a multi-channel hologram accomplishes the illusion of the image moving by alternating between two or three channels of the same image in different angles.
Fun Fact
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A "holograph" is also used to describe a document handwritten by the author or the handwriting itself.
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