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Questions tagged [spacetime-dimensions]

Concerning dimensions of space and time, whether our 3-space + 1-time or other dimensions.

10
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2answers
326 views

What goes in, must come out - limitations of temporal displacement

I am plotting out a sci-fi setting, and trying to figure out the consequences of a non-conventional form of time travel. In the story, time travel has been achieved by means of temporal displacement....
1
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3answers
147 views

Is it possible for two dimensions to exist on one planet? [closed]

I'm writing a fantasy comics and I am stuck on a particular idea. Imagine if Hell existed on our planet. Like hell is here, we simply cannot see it, because there is an invisible barrier between the ...
3
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0answers
126 views

What would the periodic table look like in 2 dimensions? [closed]

I've read this question What would the periodic table of a 4-Dimensional universe look like?, and I think it answers part of my question about how atomic physics would work, but I'm not sure. Would a ...
4
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3answers
155 views

How do one teach thermodynamics to Higher dimensional beings?

Suppose an entity from a higher dimensions who can experience time flowing both forward and backward wants to understand our world and how far humanity have advanced in tech and science, is it ...
10
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2answers
560 views

How to feed parity transformed John Doe?

We do not know how exactly it happened, but poor John Doe made a space-time trip along a three dimensional analog of a Möbius strip (a Klein bottle). He is now back on Earth, but he is now the mirror ...
9
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6answers
484 views

Flipped over through fourth dimension. When do I start to notice biological problems?

In the middle of the night, while J. Random Human is sleeping, A. Hypersphere picks him hyper-up extremely carefully (so that none of his matter falls out in a direction he doesn't have), flips him ...
2
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0answers
95 views

What would conditions be like at the hyperbolic horizon? [closed]

I am imagining a fantasy world where the horizon is a real place. If you travel to where the dome of the sky appears to meet the ground, you can even find intrepid human settlements on the edge of - ...
15
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1answer
2k views

Aritifical Gravity through Rotating wheel generalisation in a spatial 4th dimension

I'm taking the example of a rotating wheel space station, in which artificial gravity is created through rotation due to the inertia inside. The idea in the 3D environment is that the wheel (2D) is ...
5
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1answer
375 views

Using Microscopic Dimensions to Hide Objects

Idea prompted by Brian Greene's The Elegant Universe: String theory postulates microscopic dimensions in space. Could you conceal an object by rotating it into one of the microscopic dimensions and ...
4
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2answers
241 views

Astronomy in a universe with two “straight” dimensions plus a highly curved dimension

So for lack of a better term (I'm sure there is a better term) imagine a universe without curvature as being like a sheet of paper. You have left, right, forwards, backwards, up, and down. Now take ...
7
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4answers
1k views

Would an explosion or energy discharge permeate to other spatial dimensions?

Let's assume there are more than 3 spatial dimension, for example 4 (the 4th not beeing time, but spatial) Would a common energy discharge, explosion etc. affect the 4th dimension? I am not sure if ...
3
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4answers
300 views

Using an Alcubierre Drive to travel through the fourth dimension

Say there is a fourth spatial dimension ( let's call it the q axis as in x,y,z axis ) and that humans are still 3D beings. Could we use an Alcubierre drive to travel through the fourth dimension? As ...
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7answers
542 views

Uses for “Pocket Universe” backwards Time Travel? [closed]

As it turns out, Time Travel is possible! It's just not as useful as we thought it would be, that's all. You can only go back in time, and not really. Whenever anyone goes back in time, a pocket ...
8
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2answers
461 views

What would a area of slower/faster time look like?

I've been thinking about doing something involving bubbles of stopped (already answered here), slowed down or sped up time. What would that look like for different speeds? Is there any way of ...
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1answer
183 views

Spherical vs Circular(planar) wormholes; possibility? [closed]

I know that 'they' are theoretical and hypothetical, but please justify deep down to your understanding and I'll try to grab-up as much Origin of Problem: Thanks to the fantasy and fiction, there ...
87
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31answers
16k views

My time machine needs to know when it is

I've built a time machine and it works in unmanned testing... sorta. I tell it to go into the past, it disappears, and then comes back to the present. The problem is that it isn't terribly accurate. I ...
4
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1answer
104 views

Looking for an Explanation of Time Dilation I can program into a CLI calculator [closed]

Thanks but I can code it, not what I am looking for I am just looking for an explanation or equation that is clear and not too heavy in parlance for how these trips would be to people of Earth and ...
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6answers
2k views

I'd like to set up a UI for a 2D square to access the internet— any ideas? [closed]

I have a friend who is a square (i.e. he lives in a 2 dimensional plane on the surface of a table that I keep in my bedroom). He has decent hearing and understands English, but I'm getting tired of ...
10
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1answer
136 views

Discovery of space-time distortion via post-apocalyptic cartography?

So I have been working on a world where space has been "cracked" by some mysterious disaster which plunged the world into chaos. It is not immediately apparent - i.e. no giant glowing holes in the ...
3
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2answers
158 views

would the shadow of a 4th dimensional object be physical to a 3 dimensional being? [closed]

If there was a 3 dimensional plane existing within a 4d space and something forth dimensional casts its shadow into this 3d plane would it be physical to 3d beings on that plane? Now theoretically a ...
4
votes
1answer
147 views

No time dilation, what would it imply? [closed]

In a universe where space and time are two independent things. Where time is universal. Where time "passes at the same speed" in any point in space, and dilation never occurs, regardless of mass and ...
3
votes
2answers
253 views

What would a world be like with cross dimensional contact? [closed]

A universe of 10 dimensions I'm trying to build a universe with interactions between beings from different dimensions. Only dimensions 3 and up would be capable of spawning any sort of life. The most ...
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0answers
64 views

Concerning Brane cosmology [closed]

EDIT: If an actor or object in a higher dimensional space with less mass than say, my car, attached itself to the car through our dimension's membrane, would it be able to move the car or hold it in ...
6
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2answers
166 views

Viability of options for super tall tower

I've been reading through other posts about such megastructures and they're getting me part of the way to my destination. Wanted to see about a few specific options my imagination has latched onto. ...
0
votes
1answer
136 views

What happen to gravity if time is suddenly running backward? [closed]

From my naive understanding of Einstein theory of relativity: gravity is not a force but only a consequence of inertia in a world where mass deforms the space-time. Without time, no gravity is ...
1
vote
3answers
218 views

How everything will act in a world of two time dimensions? [closed]

As far as we know , we live in a universe with only a single dimension of time, we know that some events happens BEFORE or AFTER other events , we know that some events happens slower or faster then ...
3
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2answers
157 views

What are the implications of being removed from time and/or causality? [closed]

My setting explores the idea of there being something significant about the subjectivity of quantum states such that it's almost as if the Many Worlds interpretation of causality is somehow ...
-1
votes
3answers
225 views

Can death create a loophole for two exact duplicate people existing in the same universe? [closed]

Here'a another one of my weird questions... So there's two universes, two of many in a many worlds/multiverse scenario. We'll call one Universe A and the other Universe B for sanity's sake. And there ...
10
votes
10answers
2k views

How could two alternate realities “blend” at a single point in space time?

From: https://en.wikipedia.org/wiki/Multiverse The multiverse (or meta-universe) is a hypothetical set of various possible universes including the universe which we live in. Together, these ...
7
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6answers
2k views

How could it be possible to exert gravity without mass?

Some of what I read in How could a 4D organism influence events in our world made me think in a different direction about a question I asked before. I'm trying to create a large sphere shaped field ...
-1
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1answer
100 views

If you went to the moon, wouldn't you experience space time curvature? [closed]

I am trying to better understand the relationship between space and time. Did astronauts experience an "acceleration of time" when not under the influence of an external massive object like the Earth ...
6
votes
6answers
2k views

Time feels like it's going faster. Could this really be happening? [duplicate]

Have re-edited question and changed the frame slightly as the other one speaks about a specific alien-generated time bubble and I'm asking if it could really be happening as we all seem to observe ...
1
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6answers
308 views

Variability in Alternate Universes [closed]

Lets assume that the Multiverse Theory is true. Now lets talk about a Kardashev Type III Civilization living in one of these parallel universes. For the sake of the argument, lets assume that this ...
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3answers
164 views

Does time dilatation make travelling close to the speed of light redundant?

I find time dilation confusing so I'm not sure if it is a relevant factor. Lets say you have a spaceship. There's no such thing as faster than light travel, but you do have inertial dampener ...
0
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1answer
136 views

Could there be a scientifically supported way of accessing higher dimensions that is practical? [closed]

The whole concept of higher dimensions has always been a fascinating one, but I have to ask if anyone has found anything, like a popular science article or something, that suggests a useful way of ...
0
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1answer
242 views

“Time travel” and temperature/energy [closed]

I'm sure people have heard many times of faster forward time-travel, likely involving speed and or gravity, bending the fabric of space-time. But what I would like to know, is if it is realistic to ...
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votes
2answers
204 views

What real world item is the most extreme 'matryoshka doll', i.e. object nested inside other objects? [closed]

This is a problem that has been puzzling me for a while, however, I want to know what the 'biggest' real-world Matryoshka Doll is. As an example I could have a pencil in a pencil case in my drawer in ...
3
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2answers
267 views

4D Digestive System Structure

Note: I'm talking about a fourth spatial dimension. As far as I can tell, a 2 dimensional creature has one possible digestive system structure; have a cavity inside its body connected to the outside ...
50
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9answers
11k views

Could you have more than one building in the same spot by “stacking” them in 4th dimensional space?

In my universe a 4th SPACIAL dimension exists around our 3 dimensions. I'm playing with ideas for a society that has access to a 4th spacial dimension and am currently thinking of what they would be ...
0
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2answers
177 views

Technology with a 4th spatial dimension

Could parts of a mainly 3D object be built into an extra dimension? The situation I'm thinking of is this: Two machines fully enclosed inside separate metal spheres with a wire going out of one ...
-1
votes
2answers
146 views

Realistic 3D vision in our usual space-time [closed]

Humans, animals and various devices only have 2D vision: that is, we see a 2D projection of light reflected from various 3D objects in the direction of our eyes (and processed by our brains). I would ...
2
votes
5answers
219 views

How would time dilation by one character affect other characters in the same system?

I am in the midst of writing a book wherein one of my characters (Let's call her X) can affect spacetime, mostly by causing time to dilate. My character is earthbound and a shadow organization ...
47
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11answers
15k views

Would a 4-dimensional being be able to see inside other people?

I have a tribe that is completely isolated from the outside world and there is a shaman that can see in 4 dimensions. He can identify disease before it manifests and is hailed as a god. This 4th ...
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1answer
157 views

Artificial Gravity [closed]

What is a push field gravity generator? An interstellar vessel traveling at near light speed how would the crew in science fiction generate artificial gravity? Not using the typical rotation rings ...
-1
votes
1answer
140 views

What scientific mysteries could be explained by temporal gravity? [closed]

There is a way (somewhat handwaved) in which someone can travel through time. This is not merely the standard one dimension of time, for there are branching timelines. Whenever you travel into the ...
1
vote
5answers
3k views

Why are mirrors magic portals? [closed]

Mirrors are used as portals in fantasy because it seems to make sense psychologically, to people who are pre-scientific. Now we understand that reflective surfaces reflect images if sufficiently ...
4
votes
3answers
377 views

Will This Violate Causality?

Okay, so I have a sci-fi setting in which there is a form of FTL travel. Imagine the universe(all three/four dimensions of it) was stretched out onto the surface of a sphere. Now assume that there ...
5
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5answers
685 views

If an immortal, fabricated particle could travel FTL, would it exist in all times, or only the past relative to its present?

This seemed too scifi or hypothetical for physics, so here goes. Suppose a manipulated quark with 0 mass could travel faster than the speed of light. It's known that the faster you go, the slower ...
4
votes
3answers
191 views

What extradimensional topology would explain looping forces? [closed]

In my magical world there are two contrary forces, or rather essences that flow in the two opposite directions of another dimension perpendicular to our own. One is named aether and flows "up", the ...
6
votes
4answers
263 views

What would a 'bend' in space-time look like to the external observer

Judy likes coffee. Right now he is standing in the middle of the urban park sipping it. Unbeknownst to him a local phenomena occurs somewhat near: space itself bends where a lovely group of lilies ...