Question

In string theory, if the fourth detention is not time because it is not spatial what is it?

Answer 1

i also want to ask this

Answer 2

Well string theory does not stop at four dimensions but but goes beyond it.......

However, for the four dimensional theory, the four dimensions are gravity,
electromagnetism, and the two nuclear forces - strong and weak.

Answer 3

thanks

Answer 4

The fourth dimension is time. The three dimensions are height, width, and depth. The next step would be 'state', and it's measured in duration. If something's molecules do not move, it does not change state, so it is not moving in the fourth dimension, just as if you are standing still, you are not moving in the third dimension. All things exist in all states all the time, but since we live moment to moment with no accurate prediction of past or future, the perceiving the fourth dimension is lost to us.

Answer 5

Mike is right, moving through the 4th dimension is progressing in time. You can visualize it by thinking that if you have a number of dimensions, then the one above this dimension extends the dimension in a previously unseen direction. For example let's take a 1 dimensional object, a line, if we sweep out the area by moving the line parallel to itself, we get a quadrilateral. This direction wasn't seen in the 1st dimension, there was only forwards along the line, and back along the line. But now we can go forward, back, left or right, or combinations of these.

Still working within the dimensions we understand, if we take this quadrilateral and sweep out the shape by moving it "up" then we get a 3 dimensional shape. To visualize the 4th dimension, we have to think of this shape as a point, moving forwards (and possibly backwards) on a 4 dimensional line, with 3 spacial dimensions and 1 temporal one.

We see a 3 dimensional slice of this line. If we could see in 2 dimensions, think of how we would see 'slices' of the 3 dimensional world as we moved through it. Hope this explains it well enough.

Answer 6

You might as well ask what the fifth or sixth dimensions are. The fact is we cannot interact with or observe other dimensions so they are not really possible to perceive or be modeled in any way other than math.