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hologram
hol·o·gram H0243800 (hŏl′ə-grăm′, hō′lə-)n.1. The pattern produced on a photosensitive medium that has been exposed by holography and then photographically developed.2. The photosensitive medium so exposed and so developed. Also called holograph.hologram (ˈhɒləˌɡræm) n (General Physics) a photographic record produced by illuminating the object with coherent light (as from a laser) and, without using lenses, exposing a film to light reflected from this object and to a direct beam of coherent light. When interference patterns on the film are illuminated by the coherent light a three-dimensional image is producedhol•o•gram (ˈhɒl əˌgræm, ˈhoʊ lə-)
n. a three-dimensional image of an object produced by recording on a photographic plate or film the patterns of interference formed by a split laser beam and then illuminating the pattern with usu. coherent light. [1945–50] hol·o·gram (hŏl′ə-grăm′, hō′lə-grăm′) A three-dimensional image of an object made by holography.Did You Know? If you tear an ordinary photograph in two, each piece shows only a part of the original image. If you break a hologram in two, however, you end up with two holograms, each of which shows the entire original scene, although from slightly different points of view. That's because each spot on a hologram contains enough information to show how the entire scene would look if it were viewed from a particular vantage point. Imagine looking at a room through a peephole set in a solid door. What you see depends on where in the door the peephole is placed. Each piece of the hologram is a "peephole" view, and that's what makes the image look three-dimensional: as you move the hologram around or look at different parts of it, you see the original object from different angles, just as if it were a truly three-dimensional object and you were walking around it. The amount of information contained in holograms makes them very useful. They are much harder to copy than simple two-dimensional images, since to forge a hologram you'd have to know what the original object looked like from many angles. That's why credit cards, CDs, sports memorabilia, and other items include holographic stickers as indicators of authenticity.holograma three-dimensional representation in photographic form, recorded on film by a reflected laser beam of a subject illuminated by part of the same laser beam. — holograph, holography, n.See also: Images
a three-dimensional representation in photographic form, recorded on film by a reflected laser beam of a subject illuminated by part of the same laser beam.See also: RepresentationThesaurus| Noun | 1. | hologram - the intermediate photograph (or photographic record) that contains information for reproducing a three-dimensional image by holographyholographphoto, photograph, pic, exposure, picture - a representation of a person or scene in the form of a print or transparent slide; recorded by a camera on light-sensitive material |
Translationshologram
hologram a photographic record produced by illuminating the object with coherent light (as from a laser) and, without using lenses, exposing a film to light reflected from this object and to a direct beam of coherent light. When interference patterns on the film are illuminated by the coherent light a three-dimensional image is produced hologram[′häl·ə‚gram] (optics) The special photographic plate used in holography; when this negative is developed and illuminated from behind by a coherent gas-laser beam, it produces a three-dimensional image in space. Also known as hologram interferometer. hologram
hol·o·gram (hol'ō-gram), A three-dimensional image produced by wavefront reconstruction and recorded on a photographic plate. [holo- + G. gramma, something written] hol·o·gram (hōl'ō-gram) A three-dimensional image produced by wavefront reconstruction and recorded on a photographic plate. [holo- + G. gramma, something written]holographyA technique for obtaining a stereoscopic image of an object without the use of lenses. It consists of recording on a photographic plate the pattern of interference between coherent light reflected from the object and light that comes directly from the same source (or is reflected from a mirror). The coherent light is usually provided by a laser. The photographic recording on the plate (called a hologram) when illuminated with coherent light yields an image that is identical in amplitude and phase distribution with the original wave from the object. It thus provides a three-dimensional image of the object in the sense that the observer's eyes must refocus to examine foreground and background and indeed 'look around' objects by simply moving the head laterally.AcronymsSeeHhologram
Synonyms for hologramnoun the intermediate photograph (or photographic record) that contains information for reproducing a three-dimensional image by holographySynonymsRelated Words- photo
- photograph
- pic
- exposure
- picture
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