Theorys on the 5th dimension

[anonymous]

I have had the question on what the 5th dimension could be? Here is a list of all the dimesions known: 1st a line, 2nd length, width, and height,3rd length, width height, and depth, 4th time.

Please tell if you have any theories on the fifth dimension. Thank You!!!

[Tormod]

Hi!

It's not entirely correct to say that there are 4 "known" dimensions. Time is the "4th" dimension only when applied to space-time theories. What we actually have, are 3 spatial dimensions plus 1 time dimension.

In string theory (or more specifically, M-theory), there are 11 dimensions (10 spatial dimensions and one time dimension).

What the 5th dimension would be therefore depends on what theory you are talking about.

Check out our hypography on Hyperspace.

You should also search our website for the word dimensions, it will give you lots of relevant pages.

Tormod

[deamonstar]

I guess that you could also say that there are 6 dimensions... 3 spatial up/down, forward/backward, side/side, and 3 of time... past, present, future.

[Tormod]

Ah, but you forget the 7th and 8th spatial dimension: inwards and outwards.

Tormod

[deamonstar]

touche!

[anonymous]

So are you saying we live in a 9 dimentional world?

[Squiggy]

Well, last I counted, there were only 5 dimensions in the universe that we could comprehend in our own minds what the difference would be. I don’t know where these other people are getting 9. I think they’re just playing with you, man.
Tormod seems to know what he’s talking about. The others, I think, are just messing with you. You see, you have the 0-dimension being a single point, the 1-dimension being a strait line (Or length, the x variable), and the 2-dimension adds width to the mix (Y variable, the graphs we generally see in algebra class). The 3-dimension gives us height, the Z variable, which is the last dimension that we, as humans, can physically see. Shapes such as Cubes are 3D, where as squares are 2D.
The fourth Dimension, Time, is where it gets tricky. We can’t really represent it by a graph all that well, to we’ve resorted to looking at it like the 1-dimension. As a Time Line. I think they use greek letter Theta to represent the variable for time, but I’m not sure. Correct me if I’m wrong.
Now, looking at time as a 1-dimensional line, we can feasibly see what effect it would have if we were to add a dimension to that, the 5-dimension. Adding a second dimension adds the ability to branch off the time line and expand into, say, alternate universes and such, if you’re into Sci-fi novels and stuff like that.
The best I can explain this as is that if the 4-dimension were Fate, the 5-dimension would be chance, or the ability to go against fate. Sorry if this doesn’t help you any, but this is just what I came up with on my own. If there’s anyone who can correct me, I would love to hear it.

[Tormod]

Squiggy - welcome to our forums.

The problem lies in the fact that time is the 4th dimension only in the 4D space-time which we perceive (3 spatial dimension plus 1 time dimension).

When we talk about more"spatial" dimensions, time is _not_ considered a dimension. So when you take a cube and expand it into the 4th dimension, it is not expanded into time but into an (for us)unseen dimension. That is why these extra dimensions are called "mathematical" or even "hypothetical". However, they are useful in string theory and in mathematics.

So time is _not_ the 4th dimension.

Check out our hypography on hyperspace at
http://www.hypography.com/topics/hyperspace.cfm

Tormod

[littleray]

Thanks for the link on hyperspace.

it really has clear up my mind on how to picture the forth dimension on a three dimension person point of view.

It sound a lot better than the 4th and 5th dimension theory base on fate and chance, which lack proof and sounds more like dreamers' talk.

My Question comes, in film, they used to describe hyperspace as a travel medium. Which is completely differnt to WORM hole, since its just Universe becomes so dense it fold it self up.

The way I picture travel in hyper space, is like the way I try to picture
a point in a piece of paper. If the point is move across to the next piece of paper.
It will travel next to no distant to get there. Yet where it gets back into its original piece of paper. It is not going to travel further or to a different point.

Also, travel in hyper space still runs under time theory...ie. if the point want to move to a paper that is 10 piece away. It's stil need to travel that distance. This distance takes time in the third dimensional space. Just like it'll take time to travel in forth dimensional space.

So, I really don't think travel in hyperspace is going to reduce travel distance.

There comes another problem on WORM hole technology. Which makes it less possible.
If the black hole is so dense that it folds up the three dimensional space.
But, wouldn't the black hole be so dense that it will attract object from three dimension first.

A worm hole in three dimensional space becomes more a joint point of multiple three dimensional space. Which is where a point can travel through different layers of paper instant I mention before...

[Tormod]

Welcome, little ray!

We have discussed wormholes and hyperspace travel before in these forums, you might want to look around for it.

I usually use a simple analogy, which reduces 3D space to 2D (it usually helps to take away a dimension to simplify stuff): Imagine not several sheets of paper, but one single sheet. With a pencil, draw a point near the bottom of the page (label it "A"), and another at the top of the page (label it "B"). Now imagine these are two points in space. A spaceship travelling from A to B in "normal" space-time must cross the paper.

Now fold the paper, so that A and B are on each side of the folded paper, but exactly opposite each other. Punch a hole in the paper with your pencil. This is a wormhole. By travelling through it, you can move from A to B without any passage of time, and without having to traverse the vast amount of space between the points. It is equally simple to move from A to B as it is to go from B to A.

I'm not saying this is _doable_ - but it is a neat way to understand how wormholes connect two points in space which are seemingly very far from each other.

As for how to travel in hyperspace, I'll let that rest for now (it is past midnight for me over here in Norway).

All the best,
Tormod