A holodeck, in the _Star Trek_ universe, is a simulated reality facility located on starships and starbases; objects and people are simulated by a combination of transported matter, replicated matter, tractor beams, and shaped force fields onto which holographic images are projected. Starfleet ...

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Do non-Federation ships have holodecks?

Is there any canon information about non-Federation ships having holodecks? I could definitely see Hirogen, Klingon, Kazon, and Jem'Hadar ships having holodecks, but I'm not sure about these or the ...
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Why are the holodecks on Voyager in use if they have energy issues?

I'm watching the first two seasons of Voyager and various episodes have commentary on having energy limitations -- but we constantly see crew using extremely complicated holodeck simulations. Why ...
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What's the difference between a Holodeck and a Holosuite?

The Enterprise D had a holodeck for training, entertainment, and plot contrivance, but on DS9, the holo-projecting room was referred to as a 'holosuite'. What is the technical difference between a ...
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If a robotic body could be manufactured, could sentient beings be transported from the holodeck?

From what I understand of the holodeck, sentient beings cannot leave it because they are sentient. If a robotic body (like Data's perhaps) could be manufactured and the program downloaded into this ...
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Why is Tasha Yar's hologram semi-transparent?

In the episode Skin of Evil, at the end, Tasha Yar has a farewell hologram prepared for when she died. I know all of this was set in the Holodeck, but why is Yar's hologram semi-transparent, and ...
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How does holodeck keep people from running into the walls?

I can understand how the holodeck creates virtual environments. But I don't see any mechanism that prevents people from walking into walls. Are the floors moving? Are they in a different dimension ...
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Is The Doctor (EMH Mark I) technologically similar to the holodeck?

The creator of the Emergency Medical Hologram - EMH (beginning with Mark I), Dr. Lewis Zimmerman, was the 'Director of Holographic Imaging and Programming' at Jupiter Station. It can be expected his ...
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Have there been any canonical references to the holodeck/holosuites being used for virtual physical 'partnerings' with holodeck-produced constructs?

Carnal release is a valid stress relief; and unless the Federation uses hormonal suppressants, it doesn't take a 'perv angle' to realize that the holodecks may be considered for this. I can also see ...
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What happens to matter (e.g. bodily fluids) that are left on the holodeck?

We know that some of the matter generated on a Holodeck can actually leave the Holodeck's confines. For example, you can spill "holodeck" water on someone and they will be wet outside. But what ...
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What happens to the air in the area, when things are transported or replicated?

A fundamental law of physics is, in short, that two things cannot exist in the same space at the same time. This is easily demonstrated by dropping a relatively large mass, such as pasta noodles, ...
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Were holodeck emitters on USS Enterprise-D able to create holograms outside the physical boundaries of holodeck room?

Were holodeck emitters on USS Enterprise-D able to create/maintain holographic matter (e.g. holograms of beings as opposed to replicated inorganic stuff) outside the physical boundaries of holodeck ...
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How are holodecks so accurate?

After watching quite a lot of star trek recently I've noticed the holodeck needs scant few details to recreate excessively detailed cafes in Paris, and Bourbon Bars in New Orleans. In the former it ...
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Does “Encounter at Farpoint” conflict with other canon, relating to holodecks?

In some other questions about holodecks here, and other episodes of Star Trek starting with The Next Generation, I've heard/seen that the holodeck can effectively create an infinite environment that ...
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How many people can be in the same holodeck program at the same time?

In Star Trek we frequently see the amazing holodeck function with more than one person in it at a time. In some cases this makes sense, if the people are in only one or two groups, for example. But in ...
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How does the holodeck portray realism when the safety protocols are disabled/enabled

A good example to illustrate this question is in Star Trek: First Contact when Captain Picard fires a tommy gun to kill a couple of borg, because the holodeck safeties were turned off he could kill ...
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Why can some holodeck matter leave the holodeck, while other holodeck matter (notably people) cannot?

Related to Would Star Trek holodecks physically affect you once you exit the Holodeck? I was watching Elementary, Dear Data last night and I noticed that when Data realizes that something has gone ...
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Would Star Trek holodecks physically affect you once you exit the Holodeck?

Would Star Trek holodecks physically affect you once you exit the Holodeck? Meaning, if someone programmed a holodeck to dump a bucket of water over you head, would you have wet hair (outside later ...
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What are illegal/forbidden uses of the Holodeck?

I remember the episode where Laforge's engineer, Reginald Barclay, uses the holodeck to strengthen his self confidence by creating holodeck clones (Musketeers) of the Enterprise crew, to fight against ...
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How did Star Trek characters detect being unconsciously tricked into a simulated Holodeck reality?

In several episode and movies the Holodeck plays a huge role. I remember Prof. Moriarity, Riker kidnapped by Romulans, Insurrection Movie. In what ways did the Star Trek characteres realize in ...
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How does the holodeck create the illusion of distance?

Is there an in-universe explanation of how a relatively small room can be used to create an apparently infinite (or at least very large) amount of space, one in which two people can be spatially vast ...