RE: No dark matter?
May 5, 2011 at 5:35 am
(This post was last modified: May 5, 2011 at 5:37 am by Wormhole199.)
In all versions of String Theory there are 10 dimensions: "Time" plus the usual three spatial dimensions x,y,z (4 dimensions, our observable universe) plus six extra spatial dimensions making a total of ten dimensions (1 time + 9 spatial = 10 dimensions). Other competing theories like M-Theory has one extra spatial dimension (making the total 11 dimensions), however this extra spatial dimension is for the description of strings themselves (whether a string is a one-dimensional object like a thread, or whether a string is a rolled up two-dimensional membrane like a tube).
If the strings have thickness (or variable thickness as in this video) then we need this 11th dimension in order to describe them (to describe the tube). However if the strings have no thickness (always unity) then there is no need for the 11th dimension. In any case, in all currently competing theories, this Dark Matter is strings vibrating in six extra spatial dimensions.
In this video the strings with different colors are actually vibrating in different dimensions. They do not interact with each other except gravitationally. The two dimensional membrane that they are attached to in this video is the three dimensions that we are used to projected on 2D (for this presentation). Photons only travel on this 2D plane (again for this presentation), and this is why we cannot see them. We can only detect the strings gravitational shadow on the 2D plane.
What a clown.
If the strings have thickness (or variable thickness as in this video) then we need this 11th dimension in order to describe them (to describe the tube). However if the strings have no thickness (always unity) then there is no need for the 11th dimension. In any case, in all currently competing theories, this Dark Matter is strings vibrating in six extra spatial dimensions.
In this video the strings with different colors are actually vibrating in different dimensions. They do not interact with each other except gravitationally. The two dimensional membrane that they are attached to in this video is the three dimensions that we are used to projected on 2D (for this presentation). Photons only travel on this 2D plane (again for this presentation), and this is why we cannot see them. We can only detect the strings gravitational shadow on the 2D plane.
(May 4, 2011 at 10:33 am)theVOID Wrote:Quote:however this extra spatial dimension is for the description of strings themselves (whether a string is a one-dimensional object like a thread, or whether a string is a rolled up two-dimensional membrane like a tube).
All strings are 1 dimensional....
Oh, and you have 2 dimensional tubes now?
What a clown.
My favorite site: Speed of Light.
