Liberal Dictionary English Dictionary
hologram [hol-uh-gram, hoh-luh-] ExamplesWord Origin noun Optics.
- a negative produced by exposing a high-resolution photographic plate, without camera or lens, near a subject illuminated by monochromatic, coherent radiation, as from a laser: when it is placed in a beam of coherent light a true three-dimensional image of the subject is formed.
Origin of hologram First recorded in 1945–50; holo- + -gram1 Also called holograph. Examples from the Web for hologram Contemporary Examples of hologram
And if not the Holometer, maybe another experiment in the future can tell us if we live in a hologram or not.
Is the Cosmos Just a Big Hologram?
Matthew R. Francis
August 31, 2014
“Oh my god, you were made for a hologram,” he remembers thinking of the quiet artist.
New York’s Hologram King Is Also the City’s Last Pro Holographer
Nina Strochlic
May 27, 2014
The science behind a hologram is mind-bending for the uninitiated.
New York’s Hologram King Is Also the City’s Last Pro Holographer
Nina Strochlic
May 27, 2014
What would Hologram Jesus tell this group of conservative Republicans?
Just Imagine Hologram Jesus Telling Paul Ryan and Pat Robertson Off
Dean Obeidallah
May 24, 2014
In the end the interview left us with more questions than it answered: Why a hologram?
Michael Jackson’s Crazy Billboard Awards Performance and More Hologram Wins and Fails (VIDEO)
The Daily Beast
May 19, 2014
Historical Examples of hologram
The idea of a hologram serves as a way of understanding self and other.
Anne Boykin
Pri-bram offers us an interesting view on relationships in his discussion of hologram.
Anne Boykin
British Dictionary definitions for hologram hologram noun
- 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
Word Origin and History for hologram n.
1949, coined by Hungarian-born British scientist Dennis Gabor (Gábor Dénes), 1971 Nobel prize winner in physics for his work in holography; from Greek holos “whole” (in sense of three-dimensional; see safe (adj.)) + -gram.
hologram in Medicine hologram [hŏl′ə-grăm′, hō′lə-] n.
- A three-dimensional diffraction pattern of the image of an object made using holography.
hologram in Science hologram [hŏl′ə-grăm′, hō′lə-]
- A three-dimensional image of an object made by holography.
A Closer Look: To produce a simple hologram, a beam of coherent, monochromatic light, such as that produced by a laser, is split into two beams. One part, the object or illumination beam, is directed onto the object and reflected onto a high-resolution photographic plate. The other part, the reference beam, is beamed directly onto the photographic plate. The interference pattern of the two light beams is recorded on the plate. When the developed hologram is illuminated from behind (in the same direction as the original reference beam) by a beam of coherent light, it projects a three-dimensional image of the original object in space, shifting in perspective when viewed from different angles. Appropriately enough, the word hologram comes from the Greek words holos, whole, and gramma, message. If a hologram is cut into pieces, each piece projects the entire image, but as if viewed from a smaller subset of angles. The large amount of information contained in holograms makes them harder to forge than two-dimensional images. Many credit cards, CDs, sports memorabilia, and other items include holographic stickers as indicators of authenticity. Holography is used in many fields, including medicine, data storage, architecture, engineering, and the arts.