Where do YOU think U.F.O's come from ?

[noonereal]

Originally Posted by piece-itpete

I dunno noone, they think they've 'found' 12 universes (membranes they call them) in string theory, and it is possible to move between them.

Ordinarily I'd dismiss unproveable scientific theories as next to fairy tales, but they believe the reason gravity is so weak is because it moves freely between them, and so they are watching impacts in particle colliders, hoping to see a gravitron dissappear. So who knows. Neat, anyway.

Besides, I'd like to hit warp 9 someday

Pete

Yes and objects can indeed be in two places at the same time (of course as we all know they are not anywhere at all )

This is all relative in much the same way that time (as we think of it) slows the further away we move from gravity.

BTW only 11 dimentioned are currently identified I believe.

[Charles]

Originally Posted by noonereal

Yes and objects can indeed be in two places at the same time (of course as we all know they are not anywhere at all )

This is all relative in much the same way that time (as we think of it) slows the further away we move from gravity.

BTW only 11 dimentioned are currently identified I believe.

Well, that's about 10 too many.

I barely have the stomach to deal with just one.

Chas

[Big_Bill]

Originally Posted by noonereal

Yes and objects can indeed be in two places at the same time (of course as we all know they are not anywhere at all )

This is all relative in much the same way that time (as we think of it) slows the further away we move from gravity.

BTW only 11 dimentioned are currently identified I believe.

Everything depends on the theory of your choice. From 10, to 26 dimensions may be possible.


Number of dimensions

An intriguing feature of string theory is that it predicts extra dimensions. In classical string theory the number of dimensions is not fixed by any consistency criterion. However, in order to make a consistent quantum theory, string theory is required to live in a spacetime of the so-called "critical dimension": we must have 26 spacetime dimensions for the bosonic string and 10 for the superstring. This is necessary to ensure the vanishing of the conformal anomaly of the worldsheet conformal field theory. Modern understanding indicates that there exist less-trivial ways of satisfying this criteria. Cosmological solutions exist in a wider variety of dimensionalities, and these different dimensions are related by dynamical transitions. The dimensions are more precisely different values of the "effective central charge", a count of degrees of freedom that reduces to dimensionality in weakly curved regimes.[16]

One such theory is the 11-dimensional M-theory, which requires spacetime to have eleven dimensions,[17] as opposed to the usual three spatial dimensions and the fourth dimension of time. The original string theories from the 1980s describe special cases of M-theory where the eleventh dimension is a very small circle or a line, and if these formulations are considered as fundamental, then string theory requires ten dimensions. But the theory also describes universes like ours, with four observable spacetime dimensions, as well as universes with up to 10 flat space dimensions, and also cases where the position in some of the dimensions is not described by a real number, but by a completely different type of mathematical quantity. So the notion of spacetime dimension is not fixed in string theory: it is best thought of as different in different circumstances.[18]


Pick and choose your favorite theory, Quantum Physics has then all.

Bill