The Holodeck is a fictional device from the television franchise ''
Star Trek
''Star Trek'' is an American science fiction media franchise created by Gene Roddenberry, which began with the Star Trek: The Original Series, series of the same name and became a worldwide Popular culture, pop-culture Cultural influence of ...
'' which uses "holograms" (projected light and electromagnetic energy which create the illusion of solid objects) to create a
realistic 3D simulation of a real or imaginary setting, in which participants can freely interact with the environment as well as objects and characters, and sometimes a predefined narrative.
In several series, holodecks are an amenity available to the crew of starships. In the series ''
Star Trek: Deep Space Nine'', a similar device is referred to as a holosuite, operated by the owner of the space station's bar,
Quark
A quark () is a type of elementary particle and a fundamental constituent of matter. Quarks combine to form composite particles called hadrons, the most stable of which are protons and neutrons, the components of atomic nucleus, atomic nuclei ...
, who rents them out to customers.
From a storytelling point of view, the holodeck permits the introduction of a wide variety of locations and characters, such as events and persons in the
Earth
Earth is the third planet from the Sun and the only astronomical object known to Planetary habitability, harbor life. This is enabled by Earth being an ocean world, the only one in the Solar System sustaining liquid surface water. Almost all ...
's past, or imaginary places or beings, that would otherwise require the use of plot mechanisms such as time-travel or dream sequences. Writers often use it as a way to pose philosophical questions.
Origins

The ''Star Trek'' holodeck was inspired by inventor Gene Dolgoff, who owned a holography laboratory in New York City. ''Star Trek'' creator
Gene Roddenberry
Eugene Wesley Roddenberry Sr. (August 19, 1921 – October 24, 1991) was an American television screenwriter and producer who created the science fiction series and fictional universe ''Star Trek.'' Born in El Paso, Texas, Roddenberry grew up ...
met Dolgoff in 1973.
The first appearance of a holodeck-type technology in ''Star Trek'' came in the ''
Star Trek: The Animated Series'' episode "
The Practical Joker
"The Practical Joker" is the third episode of the second season of the American animated science fiction television series '' Star Trek: The Animated Series'', the 19th episode overall. It first aired in the NBC Saturday morning lineup on Sep ...
", where it was called the "recreation room". In the episode's story, Dr. McCoy, Sulu and Uhura are trapped inside it by the ship's computer.
The holodeck was a frequent plot mechanism in ''
Star Trek: The Next Generation'', beginning with the 1988 episode "
The Big Goodbye", in which the holodeck played a central part of the plot.
Prior to ''Star Trek'', science-fiction writer
Ray Bradbury
Ray Douglas Bradbury ( ; August 22, 1920June 5, 2012) was an American author and screenwriter. One of the most celebrated 20th-century American writers, he worked in a variety of genres, including fantasy, science fiction, Horror fiction, horr ...
wrote about a technology-powered "nursery", a virtual reality room able to reproduce any place one imagines, in his 1950 story "
The Veldt".
The word ''holograph'' comes from the
Greek words ὅλος (''holos''; "whole") and γραφή (''
graphē''; "
writing
Writing is the act of creating a persistent representation of language. A writing system includes a particular set of symbols called a ''script'', as well as the rules by which they encode a particular spoken language. Every written language ...
" or "
drawing
Drawing is a Visual arts, visual art that uses an instrument to mark paper or another two-dimensional surface, or a digital representation of such. Traditionally, the instruments used to make a drawing include pencils, crayons, and ink pens, some ...
").
Hungarian-
British
British may refer to:
Peoples, culture, and language
* British people, nationals or natives of the United Kingdom, British Overseas Territories and Crown Dependencies.
* British national identity, the characteristics of British people and culture ...
physicist
Dennis Gabor
Dennis Gabor ( ; ; 5 June 1900 – 9 February 1979) was a Hungarian-British physicist who received the Nobel Prize in Physics in 1971 for his invention of holography. He obtained British citizenship in 1946 and spent most of his life in Engla ...
received the
Nobel Prize in Physics
The Nobel Prize in Physics () is an annual award given by the Royal Swedish Academy of Sciences for those who have made the most outstanding contributions to mankind in the field of physics. It is one of the five Nobel Prizes established by the ...
in 1971 "for his invention and development of the holographic method", work done in the late 1940s. The discovery was an unexpected result of research into improving
electron microscope
An electron microscope is a microscope that uses a beam of electrons as a source of illumination. It uses electron optics that are analogous to the glass lenses of an optical light microscope to control the electron beam, for instance focusing it ...
s; the original technique is still used and is known as
electron holography. Optical holography was made possible by the development of the
laser
A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. The word ''laser'' originated as an acronym for light amplification by stimulated emission of radi ...
in 1960. The first practical optical holograms recording 3D objects were made in 1962 by
Yuri Denisyuk in the Soviet Union and by
Emmett Leith and
Juris Upatnieks at the
University of Michigan
The University of Michigan (U-M, U of M, or Michigan) is a public university, public research university in Ann Arbor, Michigan, United States. Founded in 1817, it is the oldest institution of higher education in the state. The University of Mi ...
in the United States.
Depiction
In most ''Star Trek'' episodes, the holodeck is a normal room within a starship. A panel outside the entrance offers the user various settings to select a program or adjust the experience.
The inside of the holodeck, when not running a program, is typically shown as an empty room of medium size. The floor and walls are depicted in different ways, either covered in a bright yellow grid on a black background (in ''Star Trek: The Next Generation''), a metallic grid structure (in ''Star Trek: Voyager''), or various other mechanisms.
When the holodeck is activated, the room disappears, replaced by a realistic, interactive simulation of a physical world. The door also disappears until the program ends or the user requests an exit verbally. The holodeck can be controlled by voice commands, or a computer terminal called the "Arch" which can be summoned by verbal command to provide manual controls. Some simulations are preprogrammed, while others are constructed on the fly by the user describing objects to be simulated to the computer.
The simulated environment is not limited to the size of the room, but can be any conceivable size, and participants can move freely, as far as they like. In some cases, the holodeck is shown to create an internal space at least as large as a starship. The opening scene of the 1994 film ''
Star Trek Generations'' features a holodeck simulation of a sailing ship including a surrounding ocean.
The environment, objects and people are created from a combination of projected light, force fields, and replicated matter (using the same technique as the food replicators). Holographic projections are solid within the holodeck, and can be interacted with as if they were real, but disappear instantly when the program ends, or degrade rapidly if removed from the holodeck. However, some episodes do show simulated matter persisting beyond the confines of the holodeck, such as in "
Encounter at Farpoint", in which
Wesley Crusher falls into a holographic stream, and remains wet after leaving the holodeck.
Living characters within the holodeck can be given varying levels of intelligence, from total lack of animation, to fully interactive, convincing simulations of human beings and other sapient beings, even including self-awareness. Users can observe a scenario passively, with none of the simulated characters recognizing their presence, or can take an active role, playing the part of one of the characters in the narrative.
The metaphysical questions raised by self-aware simulated characters are explored in several ''Star Trek'' episodes, including "
Elementary, Dear Data", in which a holodeck recreation of
Professor Moriarty becomes self-aware and demands a life outside of the holodeck; unable to meet his demands, Captain Picard saves Moriarty's program against the day when that will be possible. A story arc spanning the entire series of ''
Star Trek: Voyager'' is the development of a holographic emergency medical program, known as
The Doctor, from an intelligent but limited holographic tool into a fully realized sapient being. Originally restricted to sickbay, the character is eventually given a portable holographic projector that allows him to move freely and even leave the ship.
The holodeck is often depicted being used for practical purposes by Starfleet officers in the pursuit of their duties; it is used by the Enterprise's tactical officers to create simulated opponents for combat training, and the holodeck is sometimes used to recreate real events for the purposes of criminal investigation.
It also serves a recreational function; "holonovelists" produce programs with real or fictional scenarios for entertainment, and in several episodes of ''
Star Trek: The Next Generation'', Captain
Jean-Luc Picard takes part in stories in which he plays the role of one of his boyhood heroes, fictional detective
Dixon Hill.
Multiple ''Star Trek'' series suggest the use of holodecks for sexual experiences. In ''Star Trek: Deep Space Nine'', patrons of Quark's bar pay for hourly rentals of "holosuites" and pornographic holoprograms. The Holodecks in the animated comedy series ''
Star Trek: Lower Decks'' possess "bodily fluid filters", also insinuating that the holodecks are used for sexual purposes.
Some users develop a pathological obsession with the holodeck, a condition known to the characters as holo-addiction. ''Star Trek: Voyager'' also introduces alien beings known as photonic lifeforms who believe holodeck programs are real, rather than computer-driven simulations.
Although the Holodeck is supposed to be safe, preventing users from being injured even by realistic violence, many ''Star Trek'' shows feature plots in which the holodeck malfunctions and creates genuine dangers, or if the safety protocols have been disabled, which requires the authorization of two senior officers.
By 2399, when ''
Star Trek: Picard'' begins, holomatrix guest rooms have become a familiar amenity. On board Rios' ship, ''La Sirena'', the hospitality hologram ''(''one of Rios' holographic doppelgängers) escorts Picard to a perfect re-creation of the study in his chateau in France. According to the hologram, who came with the ship's basic installation,
Zhaban provided the holoscans, thinking Picard might feel more at home. The view outside the window is a projection—Picard says "Hold" to pause the display and the birdsong—but all the objects within have been materialized, including Dahj's necklace.
Reception
The ''
Star Trek: The Next Generation'' episode "
The Big Goodbye" (airdate January 11, 1988), featuring a story set in the holodeck, was honored with a
Peabody Award
The George Foster Peabody Awards (or simply Peabody Awards or the Peabodys) program, named for the American businessman and philanthropist George Foster Peabody, George Peabody, honor what are described as the most powerful, enlightening, and in ...
in recognition of its "new standard of quality for first-run syndication".
"The Big Goodbye" was also nominated for two
Emmy Awards
The Emmy Awards, or Emmys, are an extensive range of awards for artistic and technical merit for the television industry. A number of annual Emmy Award ceremonies are held throughout the year, each with their own set of rules and award categor ...
in the categories of Outstanding Cinematography for a Series and
Outstanding Costumes for a Series; costume designer
William Ware Theiss won the award.
"The Big Goodbye" is the only ''Star Trek'' episode to win a Peabody Award.
Similar technology in other works
* Author
Alexander Moszkowski may have been the first person to envision something resembling a 'holodeck' concept.
* The Nursery in "
The Veldt" (1950) by
Ray Bradbury
Ray Douglas Bradbury ( ; August 22, 1920June 5, 2012) was an American author and screenwriter. One of the most celebrated 20th-century American writers, he worked in a variety of genres, including fantasy, science fiction, Horror fiction, horr ...
.
* In 1965,
computer scientist
A computer scientist is a scientist who specializes in the academic study of computer science.
Computer scientists typically work on the theoretical side of computation. Although computer scientists can also focus their work and research on ...
Ivan Sutherland imagined an artificial environment in which mere 'displays' might attain to solid reality.
[Sutherland, I. (1965). The ultimate display. ''Proceedings of IFIP Congress 1965'', 506–508.]
* Russian science-fiction movie ''
Moscow-Cassiopeia'' (1973) shows a "Surprise Room" which operates in a similar way to a holodeck.
* Japanese TV series ''
Space Battleship Yamato
is a Japanese science fiction anime series written by Yoshinobu Nishizaki, directed by manga artist Leiji Matsumoto, and produced by Academy Productions. The series aired in Yomiuri TV from October 6, 1974 to March 30, 1975, totaling u ...
'' (1974) features a "resort room" capable of creating simulated environments.
* The ''
X-Men
The X-Men are a superhero team in American comic books published by Marvel Comics. Created by writer/editor Stan Lee and artist/co-plotter Jack Kirby, the team first appeared in Uncanny X-Men, ''The X-Men'' #1 (September 1963). Although initial ...
'' comic book series depicts a
training room called the Danger Room which was originally depicted as a mechanical affair (1963), but later as using holograms and other sensory simulation (1983).
* The “imaging chamber” that Admiral Al Calavicci uses to communicate with Dr. Sam Beckett in ''
Quantum Leap.''
* The HoloShed aboard the Nimbus in ''
Futurama
''Futurama'' is an American animated science fiction sitcom created by Matt Groening for the Fox Broadcasting Company and later revived by Comedy Central, and then Hulu. The series follows Philip J. Fry, who is cryogenically preserved for 1 ...
''s
fourth televised season resembles the holodeck in function and aesthetic, though the holograms have the ability to become real.
*
Abed Nadir's "dreamatorium" from the
third season of the U.S. television sitcom ''
Community
A community is a social unit (a group of people) with a shared socially-significant characteristic, such as place, set of norms, culture, religion, values, customs, or identity. Communities may share a sense of place situated in a given g ...
'' is inspired by the holodeck both in its function and in its aesthetic, though the simulations are a product of imagination rather than actual projections.
* Environmental Simulators on TV show ''
The Orville''.
See also
*
Augmented reality
Augmented reality (AR), also known as mixed reality (MR), is a technology that overlays real-time 3D computer graphics, 3D-rendered computer graphics onto a portion of the real world through a display, such as a handheld device or head-mounted ...
*
Extended reality
*
On-set virtual production
References
* P. Farrand, ''Nitpicker's Guide for Deep space Nine Trekkers'' New York: Dell (1996): 44–47
* Lois H. Gresh & Robert Weinberg, Chapter 7, "The Holodeck" ''The Computers of Star Trek''. New York: Basic Books (1999): 127–144
* R. Sternbach & M. Okuda, ''Star Trek: The Next Generation Technical Manual'' New York: Bantam Books (1991)
* Gene Dolgoff, "Reproduction of Transmitted, Pre-recorded, Holographic Television Signals in Color" New York: Institute of Electrical and Electronics Engineers (IEEE)(July, 1968)
*
External links
Holodeck
Begin Program: The Reality Of Building a Holodeck Today
{{Extended reality
Star Trek devices
Fiction about virtual reality
Fictional rooms
Fiction about holography
Fictional video games
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