Can you first work on a rigorous definition of what a dimension is?

If a dimensions length is undependent of time, then sooner or later it will get zero length, and that could be at any time since it's time undependent. But if it is time dependent then we know for certain that the size of the dimensions are equally long since one dimension is unseperatable from the other and hence effect eachother with equal manners.

Last edited by LQ (2007-01-02 20:40:59)

The word Dimension can refer to shapes such as 2-dimensional (2d) shapes and 3-dimensional (3d) shapes. A simple example of a 2d shape is a square whilst its 3d counterpart is defined as a cube. Dimensions can be better explained using axis. On a 2d coordinates grid we have only an 'x' axis and a 'y' axis whilst on a 3d grid there is a third 'z' axis. Let's count up how many axis we have on both grids. On the 2d grid we have 2 axis, hence the definition 2-dimensional. On the 3d grid we have 3, hence the definition 3-dimensional. Humans can see only a limited number of dimensions. We mostly see 3-dimensions as some faces of opaque shapes are often hidden unless we change our viewpoint. Then again even if we change the angle at which we see something, some of the faces we could see before are then hidden. This is a simple study of dimensions and should be referred to before moving on to more complex dimensional studies.

Nice explanation, Zero.

LQ: I must confess I am confused. However your ideas sound a little like my theory that "things" are only the result of "relationships". So these "dots" of yours are the end-points of relationships.

And once you build up enough "relationships" it becomes possible to have relative properties. For example, "A" is after "B", and "B" is after "C", hence "C" is also after "A". 

And length, to me, is a relative property ... you define a "unit length" (by marks on a piece of metal, or wavelengths, etc), and then compare it to other lengths.

Interesting idea, but has anyone observed something that loses a dimension?

And ... has anyone observed something with 2 dimensions?

Yes, some things dots are still 3D, but if you look at big things, like galaxies, they are flat, aren't they? Relatively speaking...

"A dot is infinitely thin, so 2 dots in a row is also infinitely thin, why there is nothing saying that the multidimensional dot it all began with can't re order the dots internally to create a dot that has less dimensions then the first dot. Infact, even an infinitely slow movement of the dots given from the fact that the highdimensional particle has a free variable of dimensions depending on the dot's positions in them self and the other way around would still cause an imediate effect as a decay of dimensions, in the case that the dots due to this mentioned, moved. Since every dot moves, they would sooner or later form a 3 (or lower) dimensional mess that we can live in. I guess that the final decay would be 0 dimensional. I don't know what will happen then. I guess the dots will dissapear and it will start all over again. Cause the energy and momentum cannot be contained in something 0 dimensional

Right now we've got galaxies and solarsystems that are flat.

It couldn't have started in 4D, cause then there would only be 2 particles.

Last edited by LQ (2007-01-06 05:52:05)

Yes, some things dots are still 3D, but if you look at big things, like galaxies, they are flat, aren't they?

Calling a galaxy flat is the equivalent of calling a piece of paper flat.

But a piece of paper is not flat...

No, it has a height.  A quick few searches shows this to be 0.004 inches, but I'm not certain if this is the standard.

Yes, but if the room was about to go 2D, wouldn't it start like that?

And thanks for the neat paper width examination. You have alot of them, don't you?

Last edited by LQ (2007-01-06 21:32:57)

The same reason that something can go 3D.

How about a balloon?

Anyway, seriously... What I meant is that we are like a 4D line through 3D rooms, and since everything with dimensions, can change over other dimensions (dy/dx) so that it becomes less dimensional, that will happen and this means that eventually we will reach the end of the line, and then there will only be room, 3D life. That is, if it will ever end. That is, if our speed through spacetime is compareable to the length of time. The universe is a box, if you get to the end, you'll have to go sideways. But this I know very little of. Enlighten me if you can.

How about big bang?

Last edited by LQ (2007-01-08 06:29:52)