posted on Dec, 24 2005 @ 09:39 AM
I don't think dimension is the proper word to use here. Dimension is a term used to define an objects shape and size. Anything that exists, exists
in all dimensions.
As far as I know, time is considered widely to be the 4th dimension. According to Relativity, space and time are iterconnected. Space-time, as it's
called, is the fabric of the universe and is what we move through as everything goes along.
String theory proposes that there are many dimensions. The numbers go as high as 26. These dimensions are mostly subatomic in size, so we can't see
them. It's like if you looked at a telephone line from far away, it would look like a 1 dimensional line, it's lengh. As you got closer you could
make out it's hight, the second dimension. Then if oyu were right up close to that line you could probably make out it's depth too. That's the
third dimension. The rest are so small, we ust can't see them.
String theory is based on super small bands of vibrating energy, like a string on a violin. The same way a different sound is heard when vibrating a
string on a violin, different forms of matter or energy are formed when strings vibrate. These strings are so small that if an atom were the size of
our solar system, a string would be the size of an oak tree.
There are 2 types of strings, open and closed. The closed strings are like rubber bands, and the open strings are like the strings on a violin.
Closed strings can vibrate on their own, but open strings need their ends to connect to something.
On one of the dimensions that string theory proposes, a single string can exist as something called a membrane, that encompases the whole universe.
This is what the open strings connect to. It's these strings that make up most of our observable universe. We can only physically interact with
things whose strings are connected to the same membrane that we are.
String theory also allows for multiple universes. Each universe is created by collisions between membranes in the 11th dimension. Each Universe is
an individual universe, with it's own set of rules. The laws of physics that apply here, don't necessarily apply there. The interesting thing is
that these universes exist right on top of us, just connected to another membrane.
Closed strings are interesting because they don't need to connect to any membrane, they just float along passing through these membranes. It is
thought that a graviton, the elementary particle responible for gravitational attraction, is a closed string.
If that's the case, it would be interesting to think of other things being able to pass through the multiverse. Maybe our conciousness is a closed
string. I may exist passing through multiple universes. Maybe when we die, it floats on through to other universes, and sometimes back here.
That's where your leap of faith has to come into play.
fun to think about.
(edited for typos, but probably didn't get them all.)
[edit on 24-12-2005 by Rasobasi420]