Questions tagged [spacetime-dimensions]

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

Filter by
Sorted by
Tagged with
3
votes
5answers
2k views

Speeding up time?

Any ideas how an advanced alien race could speed up time in a specific region of space? I'm working on a storyline in which an alien race uses a time bubble to accelerate time so the construction of ...
15
votes
5answers
2k views

Physical laws for a matter-filled universe

The Setting: I have an idea for a universe that, in an inversion to our own, is filled for the most part with matter in solid, liquid, gaseous or plasma form, while vacuum and degenerate matter is ...
4
votes
3answers
2k views

Interactions with higher dimensions

I was reading Flatland, and the thought occurred to me that interaction between an n-dimensional being and a n+1+-dimensional being may not only be difficult but dangerous, that Flatland contains ...
43
votes
1answer
5k views

What would the periodic table of a 4-Dimensional universe look like?

In this question, I asked about a universe with (amongst other things) 4 large spatial dimensions. In 3 dimensions, we have the familiar periodic table with its familiar arrangement of atoms in the S,...
10
votes
4answers
766 views

Multidimensional Time-Lines

Ever since grade school, we have been taught to visualize time in the form of a time-line. This model works particularly well considering the fact that, according to widely accepted scientific theory, ...
47
votes
17answers
8k views

What if we lived near a boundary of the universe?

This answer and its follow-up discussion with the OP made me think, and boil it down to the essentials: We live in a universe that’s either infinite in spacial extent or unbounded, and wrap-around ...
31
votes
5answers
5k views

How can it be bigger on the inside

We have these "magical" items everywhere in fiction; from the classic rabbit coming out of a hat illusion, to the TARDIS from Doctor Who, to Newest Magical Beast Newt Scamander Briefcase. These items ...
30
votes
5answers
2k views

How to test a time machine?

Eureka! I have a time machine in my garage and it works. I put an apple in it, close the door, set the timer, open the door to an empty machine, wait five minutes and the apple reappears. (Still ...
16
votes
2answers
4k views

What would organisms be like in four physical dimensions?

In this question, I asked about a matter-filled 4-spatial-dimensional universe, with a gross structure defined by my own answer to that question. Then, in this question, I asked about what the ...
5
votes
1answer
2k views

How could a 4D organism influence events in our world [closed]

I'm thinking in terms of: We three dimensional humans can draw a square on a paper--that is the squares universe. It could grow bigger if we attached more papers and drew more squares. If it were ...
3
votes
4answers
716 views

Graphically represent (map) multiple spatial dimentions

I would like to create a 3D map that can represent a universe with more than 3 spatial dimensions. The humans who use the map can only normally interact with 3 dimensions (and time) but in my world ...
90
votes
31answers
17k 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 ...
37
votes
10answers
8k views

What does it actually mean to have two time dimensions?

The trivial answer is that it just means "you have two dimensions with inverted sign in your spacetime metric". But the perceptual result of that kind of choice doesn't actually look qualitatively ...
48
votes
11answers
21k 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 ...
50
votes
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 ...
13
votes
10answers
3k 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
votes
6answers
3k 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 ...
12
votes
2answers
663 views

Body plan of a 4D human-analog?

I am attempting to design aliens that live in a universe with a 4+1 space-time--i.e., a universe with four orthogonal spatial dimensions, rather than three, in addition to a fifth time dimension. In ...
10
votes
9answers
1k views

Most scientifically accurate way for time travel

I'm looking to use time travel as a big element in my world. I want there to be a somewhat reasonable explanation for it though, so it doesn't turn into some magical wooble-booglly tech stuff. (...
4
votes
3answers
938 views

How far can space time be warped, twisted, and pulled?

In the story I'm writing, an ancient civilization once roamed the local group, traveling from galaxy to galaxy with ease. Thousands of millennia after their disappearance, humanity stumbles across the ...
10
votes
6answers
845 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 ...
6
votes
5answers
811 views

How can civilizations develop if the day keeps repeating forever?

Set in 2015, a highly classified experiment goes awry and as a result the entire universe including non-observable and all multiverses are trapped in an infinite time loop whereby each cycle lasts 24 ...
4
votes
1answer
356 views

Stealth in space solution?

So those of us that deal with science fiction have all seen space ships that can't be detected until you bump into them or physically see them. The project RHO website is commonly referenced when this ...