4D - Discussions

[kidakaka]

arlov, I am trying to visualize this, but to be really really frank. I think its beyond my capabilities to do so, I cant for instance imagine 4 orthogonal axes. The only way to do so would be where the 4D is time, although I am guessing the time-universe thing encapsulates multiple dimensions.


So, an instance of slice in 4D would be a snapshot of the entire world frozen. eh?

[crook]

Originally Posted by arlov333

Now think of this - you can project a 3D graph onto a 2D graph by taking a slice through at, say, a given Z value. For example, a sphere in 3d with describe either nothing, a circle or a point when projected for a given 'slice' into 2D.

agree with everything except the above. Can you explain? I may be too naive to understand the complex stuff, but what happened to the 4th dimension called time ??

[xheavenlyx]

we call 4th dimension time because its easy to viz it. Rather than having an abstract 4th dimension...which some mathematicians have a habit of introducing. i saw a video on google about the 10th dimension and how we keeeeep on going about increasing dimensions just as we move from 1st to 2nd to 3rd to blah-th and so on so forth and suddenly they stop on the 10th saying it cant go further or thats where we have worked till. Maybe they like complicated things.

give me one usefulness of the 6th dimension..!?!

Ok, moving on to this topic.

4d can be imagines like this::: <Count the number of closed bracket properties.>

0. 0d is a point.

1. stretch the point and its 1D. <length> (like a line)

2. Parallel the line and connect the ends. 2d with <length> <breadth> (like a square or rectangle or...)

3. bring in hight. 3D - like a box so : <length> <breadth> <hight> (like a box)

4. bring in time or whatever you can call it.... 4D - The box changes one of its properties in time.... <length> <breadth> <hight> <change of shape i.e: length breadth hight skew etc> (a box getting shorter by time)

5. 5th dim ?I think is all these properties and dim of an object in a different world altogether. (like the same box in a parallel universe... )

Well, explaining how you can view each object in a lower dimention by slicing it is kinda difficult to write. Ask someone on college or watch a video on google or youtube

Thanks for all the information though, guys!!

Oh and if you like to see the 10th dimention visually. here is the link to part one:

http://www.youtube.com/watch?v=JkxieS-6WuA

[The_Big_K]

This discussion is to good to be in Chit-Chat Section. Moving the thread to IDEAS|Knowledge Sharing section.

[ash]

Hey, that youtube link was wicked! I never thought of anything beyond 4D.. and even so, I didnt even understand how we could "draw" 4D in the first place, haha. There was a computer game called 4D Chess.. anyone played it before?

[arlov333]

@kidakaka
sorry , i couldnt respond because i was on POOJA holydays..
thanks for trying what i posted, i understand the problem why dont you xheavenlyx-s post. lets take the discussion forward.
@xheavenlyx
i watched the video, that was a pretty good one
@crook
"Now think of this - you can project a 3D graph onto a 2D graph by taking a slice through at, say, a given Z value. For example, a sphere in 3d with describe either nothing, a circle or a point when projected for a given 'slice' into 2D."
just imagine a sphere of dia. 'D' imagine it to be passing through a paper.then a set of circles of varying dia. from 0[ie, a point] to a maximum of D will pass through the paper.
is the point clear?

[Elisa]

Originally Posted by arlov333

@kidakaka
sorry , i couldnt respond because i was on POOJA holydays..
thanks for trying what i posted, i understand the problem why dont you xheavenlyx-s post. lets take the discussion forward.
@xheavenlyx
i watched the video, that was a pretty good one
@crook
"Now think of this - you can project a 3D graph onto a 2D graph by taking a slice through at, say, a given Z value. For example, a sphere in 3d with describe either nothing, a circle or a point when projected for a given 'slice' into 2D."
just imagine a sphere of dia. 'D' imagine it to be passing through a paper.then a set of circles of varying dia. from 0[ie, a point] to a maximum of D will pass through the paper.
is the point clear?

Its true that the fourth dimension is time. I find it difficult to imagine when people talk about 5th, 6th ... dimension. Can anyone make it very simple to understand?

[arlov333]

@elisa
have you seen the video posted above ?
i believe visualising higher dimensions is almost impossible, still we can think about them by folding them down to a 3d space.
u can see a king on th paper,it is tough for him to visualize 3D. now think of a stack of such pictures placed one over the other with a continuous change in the posture of the king,as the king passes through such a pile,he gets older a bit[though such a thing is never told in th comics].he can go back to youth if the process he undergone is reversible.
likewise we pass through the time and so its the 4th D. but there is no path back because of the irriversible processes we undergo..
and for higher dimensions, there is such a thing like folding in or compression of dimensions into smaller one.
better you read it from here
http://aimath.org/E8/e8andphysics.html

[arlov333]

do you have anything new?

[Krane]

THE YOU TUBE LINK IS AMAZING..................... it is the secret of time travelling..... @___@......