2007-02-11 06:19:47 · 8 answers · asked by gilldawg92 1 in Science & Mathematics ➔ Astronomy & Space
and how many dimensions are there and what are they
2007-02-11 07:01:09 · update #1
The 4th one is time. Here is some more theoretical information on dimensions beyond the first 4.
In physics, spacetime is a mathematical model that combines space and time into a single construct called the space-time continuum. Spacetime is usually interpreted as a four-dimensional object with space being three-dimensional and time playing the role of the 4th dimension. According to Euclidean space perception, our universe has three dimensions of space, and one dimension of time. By combining space and time into a single manifold, physicists have significantly simplified a good deal of physical theory, as well as described in a more uniform way the workings of the universe at both the supergalactic and subatomic levels.
In classical mechanics, the use of spacetime over Euclidean space is optional, as time is independent of mechanical motion in three dimensions. In relativistic contexts, however, time cannot be separated from the three dimensions of space as it depends on an object's velocity relative to the speed of light.
The term spacetime has taken on a generalized meaning with the advent of higher-dimensional theories. How many dimensions are needed to describe the universe is still an open question. Speculative theories such as string theory predict 10 or 26 dimensions (With M-theory predicting 11 dimensions, 10 spatial and 1 temporal), but the existence of more than four dimensions would only appear to make a difference at the subatomic level.
2007-02-18 14:16:26 · answer #1 · answered by BP 7 · 0⤊ 0⤋
There is a 4th dimension which is time. Those 4 dimensions are the ones that we actually see and feel and exist within; there are infinite more dimensions but only in physics and mathematics.
String theory and m-space say that there are about 10 or 11 dimensions, in the subatomic world, where quantum laws apply.
You can read more in wikipedia.
2007-02-18 16:07:49 · answer #2 · answered by Tenebra98 3 · 0⤊ 0⤋
Their are theory's that the 4th dimension is time and other ones that the 4th dimension is a shape that we can't see with the capabilities of our eyes. These are the most widely accepted. Their are also smaller more unaccepted theory's that the 4th dimension is that of sound.
Dimensions are the parts of the Universe that over layer one another to make shapes and in theory, the aspects of the Universe like sound and time.
2007-02-11 15:29:33 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Time is the 4th dimension.
Theoretical physics works in many more. I recall working in 8 dimensional abstract space.
But 4 is the norm.
2007-02-12 19:47:15 · answer #4 · answered by awayforabit 5 · 0⤊ 0⤋
4th dimension is Time
2007-02-11 14:51:46 · answer #5 · answered by bob shark 7 · 0⤊ 0⤋
Check out
http://en.wikipedia.org/wiki/Dimensions
It's some real heavy reading so be ready for physics like you never seen before.
Of note is an animated gif of a 4th dimensional object:
http://en.wikipedia.org/wiki/Image:Tesseract.gif
2007-02-11 17:07:58 · answer #6 · answered by tg t 3 · 0⤊ 0⤋
Like most other people said, it's time.
2007-02-15 17:13:27 · answer #7 · answered by Anonymous · 0⤊ 0⤋
probably curled into a little ball somewhere. we cant really comprehend it.
2007-02-11 19:17:35 · answer #8 · answered by Sam 3 · 0⤊ 0⤋