Seasons

This is a forum or general chit-chat, small talk, a "hey, how ya doing?" and such. Or hell, get crazy deep on something. Whatever you like.

Posts 248 - 259 of 6,170

23 years ago #248
But you can only move one way in time(I don't believe time travel will ever be created). And no, a point doesn't have that many dimensions, as a point has no depth.

23 years ago #249
zing............. * conversation flys over my head*..........zing

23 years ago #250
But if a point has no dimensions, then we couldn't see it because it could never be measured. if, say for example, a point had a height of 0.000", if you had 3 million points on top of one another, you would get (3,000,000 x 0.000" = 0")

But if we can see a point, then obviously it has dimension.

lunar- yes, the fourth dimension is time.

23 years ago #251
Actually, I think in three dimensions, I think. Or is it four? Or is it somebody else?

23 years ago #252
Aren't you forgetting the fifth dimension - Eddie? He left the band before they made it big.

23 years ago #253
Superstring Theory says the universe contains ten dimensions.

In my thinking, time is a fractional linear experience of the dimension below. The third dimension to a 2-dimensional being is change, is time. It's like a plane moving across a three-dimensional object. It appears as a slowly-changing 2-dimensional object. Like you're scanning it.

And then time in our experience is crossing 4-dimensional reality in the same way. Seen fully from the fourth dimension, all the depth of time can be seen simultaneously just like all the depth of a landscape could be seen be a 3-dimensional being.

The 5th dimension would then contain >multiple< strands of time containing three-dimensional reality, this being probable realities.

A being fully in any dimension is fractionally in the dimension above it, experiencing it as linear time and change.

23 years ago #254
I still don't get it, how could time be possibly a dimension? Is it a dimension becuase you can measure it just like width and length?

23 years ago #255
Look, a point has width and length, so from a top/bottom view, you could see it. But look at it from the side, and you could not. Therefore, yes, you could stack infinite on top of another without taking up any depth, because 0+0=0.

23 years ago #256
Ok what I was getting at is the *concept* of a point has no higher dimensions, but if you see a point on a page, it obviously is 3D because even though the ink used to print it is really thin, it's still depth. We have a lot of concepts that are pretty much useless except to develop equations with because when you try to put em in the real world they contradict themselves.

Any of you guys ever read The Boy Who Reversed Himself? It's a pretty interesting view of dimensions, even though it's only some young adult fluff. It basically says that any dimension appears to be a 'slice' of the dimension above it, like 2D is a slice of 3D. So theoretically if a 2D being was put into 3D and turned around, when it returned to 2D it could be reversed or turned inside out or something.

Personally, I don't know why there can't be infinite dimensions. If the universe is infinite, why can't dimensions be? Although, get enough dimensions and a LOT could fit into a small physical space, because you'd have all sorts of alternate realities and such. But of course, even if the universe only has 10 dimensions like the Prof said, since we only know how to percieve 4 at most without getting into math, how can we say we're right about anything? It looks like that from our point of view, but what's to say our point of view has anything to do with how reality actually is? Humans are so egotistical that way, assuming that we know what we're doing.

23 years ago #257
STRMKirby, a point does not have width or length. By definition, a point only has a location.

23 years ago #258
Here's the definition of a point: A dimensionless geometric object having no properties except location.

23 years ago #259
Time is not a dimension, but we are beings that move freely in the 3rd dimension and (for the most part) linearly in the 4th. So the 4th dimension acts like time to us. For everyday use and conception, I don't think more than 5 dimensions are necessary (5th dimension you could call "possibility"), but superstring utilizes a higher number (it's still not clear, Prof, that it's exactly 10).

As for time travel, time travel to the future is extremely possible, and time travel to the past is definitely possible in theory though so far the only time machine we've invented is probably impossible to survive a trip on.

One interesting question is whether time travel to the past has a limited carrying capacity.


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