The tenth dimension

I've seen this before. It mindfucks you, but it doesn't explain how it deals with causality, which is the major obstacle regarding travelling through temporal dimensions. I'd quite like to read the book, though.
 
oh coob knight, you handsome devil you.

also that stuff is crazy. i've been thinking the same thing for years, it's really weird that i've never seen this.
 
I found that thing very weird. I have read some on M-theory, and M-theory has 10 spatial dimensions and the dimension of time. Personally, I believe M-theory is correct. However, that video said the 4th dimension was time, which is different. In M-theory, we have the first three dimensions like a grid acriss the entire universe, and the other 7 spatial dimensions are curled up in calabi-yau shapes at every intersection.
 
That was an excellent video, thanks for the link. I couldn't help smiling to myself as I saw the concept repeating itself ad infinitum, and did wonder if they could someone bring it to a finite close. gg
 
Yeah we discussed this after the AP tests in my AP Physics class a few years back. PBS had a good documentary that we watched. The linked video does a really good job of summarizing the basic theory, though. What it leaves out is potential methods and means for bending the various dimensions but obviously that's because nobody has figured this out yet! Or they have, just in some other alternate time line... This is definitely the cooler part of physics without a doubt. I kind of want to read this book just to have a more in depth discussion.
 
aquasuicune said:
I found that thing very weird. I have read some on M-theory, and M-theory has 10 spatial dimensions and the dimension of time. Personally, I believe M-theory is correct. However, that video said the 4th dimension was time, which is different. In M-theory, we have the first three dimensions like a grid acriss the entire universe, and the other 7 spatial dimensions are curled up in calabi-yau shapes at every intersection.
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Yeah.
Still, what was just shown was rather interesting, and sort of explains it. Calabi yau shapes are just masses of folds from out dimensions in ways beyond length, width, and depth, creating those dimensions.
I'm sort of surprised they didn't show the Klein Bottle, though.
 
this is why theoretical physics pisses me off - they can make anything up that sounds plausible, and because it is highly unlikely that anyone will be able to disprove it they can pretend it's real. I much prefer the practical kind that is actually useful.
 
PikaPete said:
this is why theoretical physics pisses me off - they can make anything up that sounds plausible, and because it is highly unlikely that anyone will be able to disprove it they can pretend it's real. I much prefer the practical kind that is actually useful.
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lol like the world was flat etc.
 
It's cute but it's mostly bullshit. It really only gets completely wrong from dimension 7 onwards. The problem is that they are misconstruing the concept of dimension and then they do whatever they want with it so it can follow their little patterns. For example, if we consider all possible worlds that would have a different speed of light or different gravity, we're actually adding two dimensions, not a single one.

There are other issues. One of them is that dimensions 4+5 (both taken together) are not topologically correct. Take a 10x10 image, for instance. You can stack 2D images in 3D, but if you consider the space of all possible images, it's actually a 100-dimensional space: one dimension per pixel. It is possible to stack all 2^100 possible images on a single dimension, but that is topologically incorrect because it misrepresents what images are close to what other images. When you consider time, there is no problem: one state leads to the next, you can simply stack them on the time axis. If you add a 5th dimension, it's like taking a whole timeline and giving it an index. The problem is that the relationship between 4 and 5 is no different from the relationship between 3 and 4: each timeline has one previous timeline and one next timeline. Just one, because there is only one dimension to order them along! If you want to consider all possible branchings from our timeline to another, to be topologically correct, you have to add one dimension per choice! To give you an idea, this means we go from 3 dimensions to ~10^80 rather than from 3 to 5.
 
its pretty interesting. The 2D part just reminded me of super paper mario. But man that was a good watch. Now all we need is Hiro Nakamura to fold time for us so we can get to the 7th dimension.
 
Cookie Crumbz said:
I've seen this before. It mindfucks you, but it doesn't explain how it deals with causality, which is the major obstacle regarding travelling through temporal dimensions. I'd quite like to read the book, though.
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Causality is explained by any random element in the fundamental rules governing the universe.

I got totally lost with the 6th dimension explanation as well, but I think overall the concept is sound, the numbers just might be wrong. But anyway, as for my understanding of it it goes like this. Considering the index analogy, it would be like it is in alphabetical order.. They'd be stacked something like this:

Universe A: I get up, I have eggs for breakfast, I go to work.
Universe B: I get up, I have eggs for break fast, I call in sick.
Universe C: I get up, I have cereal for breakfast, I go to work.
Universe D: I get up, I have cereal for breakfast, I call in sick.
Universe E: I dont get up.

This way, anything can be changed, but it only takes moving from one stack to the next. The 10x10 image could be described as stacked in this manner as well.. I think.. I am really shit on physics though, even worse than calculus..

I think the point is that the speed of light is irellevant as far as dimensions. You could have a 3d universe where the speed of light is different.. I think.. But that isnt actually a change of dimension. Either that or I am just completely wrong.

Have a nice day.
 
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