how many dimensions are there in this universe?

Question

if there are many dmensions in this universe why don't we define an objct with respect to those dimensions

Answer 1

in the universe behave all physic law, it is mean that the universe has many dimension.

hmmm... why? because people don't solve all dimension yet.

Answer 2

We can perceive only up to 4 dimensions (three related to the space and the fourth one being the time) . But certainly the universe seems to be residing in more than these four dimensions. According to string theory we live in a 11 dimensional space and some how the other seven dimensions are so compact that we are not able to perceive them.Its something like an ant moving on a long wire.For the ant the wire is 2 dimensional (It has got distance as well as a radius which defines the diameter of the circular cross section). However for us the wire seems to have only one dimension. For us the circular cross section of the wire is not apparent.

Answer 3

3

Answer 4

There are 4 dimensions: length (or depth), width, height and time.

However, higher physics theories like "String Theory", predict that the space we live in has in fact many more dimensions (frequently 10, 11 or 26), but that the universe measured along these additional dimensions is subatomic in size. As a result, we perceive only the three spatial dimensions that have macroscopic size, and the fourth dimension of time.

Answer 5

10 Dimensions

Answer 6

3 dimensions
Not a sure answer

_EDIT_
Some scientists used a human made equation to prove this true, however their equation may be defective. Most people except the belief that the world has three dimensions. (It is hard to tell really)

_EDIT #2_
1st dimension = line
2nd dimension = plane
3rd dimension = space
4th dimension = space with variable Time

_EDIT #3_
(Sorry about the edits, but I want to add more)
It seems the complexity of the 4th dimension is hard to define. Some mathmaticans believe that it has to be the third dimension due to that fact.

Answer 7

There r only 3 dimensions in thid universe.But time is also considered as a 4th dimensions not yet accepted.I cheked out the other answers but i am sure that there r only 3 dimensions
just because of the fact that v r able to represent each & everything in 3 dimensions.

Answer 8

The physical effects of extra dimensions depend on their sizes and shapes, and on what kinds of matter or forces can penetrate them. The sizes of the extra dimensions are unknown, but they should be related to fundamental energy scales of particle physics: the cosmological scale, the density of dark energy, the TeV electroweak scale, or the scale of ultimate unification. It may be possible to infer extra dimensions of macroscopic size from inconsistencies in cosmological observations, or from precision tests of short-range gravitational forces. More likely, the extra dimensions are microscopic, in which case high-energy particle accelerators and cosmic ray experiments are the only ways to detect their physical effects.

The LHC and a Linear Collider will address many questions about extra dimensions: How many extra dimensions are there? What are their shapes and sizes? How are they hidden? What are the new particles associated with extra dimensions? Through the production of new particles that move in the extra space, the LHC will have direct sensitivity to extra dimensions 10 billion times smaller than the size of an atom. A Linear Collider would determine the number, size and shape of extra dimensions through their small effects on particle masses and interactions. There is also a chance that, due to the existence of extra dimensions, microscopic black holes may be detected at the LHC or in the highest energy cosmic rays.

Ultimately particle physics seeks to know if dark energy, dark matter and cosmic inflation are affected by the physics of extra dimensions. Collider data will provide insight into the exploration of these deep connections.

Answer 9

4 dimensions

Answer 10

There are 4D in universe, the x-axis, y-axis and z-axis and fourth dimension is time. If u didn't consider time as dimension then uncertainity principle will get violated. while talking about universe we have always 4-dimensions.