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Medical Definition of hologram : a three-dimensional image reproduced from a pattern of interference produced by a split coherent beam of radiation (as from a laser) also : the pattern of interference itself
Holography is a photographic technique that records the light scattered from an object, and then presents it in a way that appears three-dimensional. Holograms pop up in movies such as "Star Wars" and "Iron Man," but the technology has not quite caught up to movie magic
holograms are three-dimensional images generated by interfering beams of light that reflect real, physical objects. Unlike conventional 3D projections, holograms can be seen with the naked eye.
Holography is a technique that enables a wavefront to be recorded and later re-constructed. Holography is best known as a method of generating three-dimensional images, but it also has a wide range of other applications. In principle, it is possible to make a hologram for any type of wave.