hologram

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noun ho·lo·gram \ˈhō-lə-ˌgram, ˈhä-\

Definition of hologram

  1. :  a three-dimensional image reproduced from a pattern of interference produced by a split coherent beam of radiation (as a laser); also :  the pattern of interference itself

Did You Know?

A hologram is a picture of a "whole" object, showing it in three dimensions. We've all seen cheap holographic images on credit cards and ID cards (where they help prevent copying). Far more impressive are large holograms that take the form of a ghostly 3-D moving figure that you can walk around to see from all angles. Holograms were invented in 1947 but only perfected after the invention of the laser in 1960. Today they're used in such technologies as compact-disc players and checkout scanners, and holograms can be created of the inside of live internal organs to permit doctors to examine the organs in great detail. And soon televisions with hologram technology may enable us to watch in "3-D".

1949

First Known Use of hologram

1949


HOLOGRAM Defined for English Language Learners

hologram

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noun ho·lo·gram \ˈhō-lə-ˌgram, ˈhä-\

Definition of hologram for English Language Learners

  • : a special kind of picture that is produced by a laser and that looks three-dimensional


HOLOGRAM Defined for Kids

hologram

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noun ho·lo·gram \ˈhō-lə-ˌgram, ˈhä-\

Definition of hologram for Students

  1. :  a three-dimensional picture made by laser light reflected onto a photographic substance without the use of a camera


Medical Dictionary

hologram

play play
noun ho·lo·gram \ˈhō-lə-ˌgram, ˈhäl-ə-\

Medical Definition of hologram

  1. :  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


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