Just how many dimensions are there?

Question

We now have things like third dimension, stuff like that. What is a dimension and how many dimensions are out there and what are their uses?

Answer 1

There are anywhere between 4 dimensions and 11 (I believe it is 11 that are hypothesized to exist) -- but who knows? Could be an infinite number of dimensions!

Dimensions that we experience are 3 spacial (Length, width, height) and one time dimension.

Answer 2

As many as you want to work with. But this question usually means, "When reduced to bare essence, how many dimensions remain?" To which question the answer is typically 4 or 11. The eleven people are on some string theory kick which isn't proven.
Four is the solid answer. Three dimensions for x, y, and z space and t for time. All physical phenomena large to small can supposedly be resolved into an interaction of these.
Maybe someone else can define "dimension" for you. I can just give you the 4 space-time dimensions. Length, width, height and time.

Answer 3

3

Answer 4

locating a point on a plane (e.g. a city on a map of the Earth) requires two parameters—latitude and longitude. The corresponding space has therefore two dimensions, its dimension is two, and this space is said to be 2-dimensional (2D). Locating the exact position of an aircraft in flight (relative to the Earth) requires another dimension (altitude), hence the position of the aircraft can be rendered in a three-dimensional space (3D). Adding the three Euler angles, for a total 6 dimensions, allows the current degrees of freedom—orientation and trajectory—of the aircraft to be known.

Time can be added as a 3rd or 4th dimension (to a 2D or 3D space, respectively). Then the aircraft's estimated "speed" may be calculated from a comparison between the times associated with any two positions. For common uses, simply using "speed" (as a dimension) is a useful way of condensing (or translating) the more abstract time dimension, even if "speed" is not a dimension, but rather a calculation based on two dimensions. (Actually, it is possible and useful to consider "spaces" with extra dimensions for representing velocity, because it helps solving certain equations.)

Answer 5

From latest physics theory's, there are 11 or 21 dimensions predicted through mathematical process on how the cosmos interacts by the top of their field physicist/ mathematicians(Not Me).

We live in 3 spacial (x,y,z) and time(t), which in 4. Some of other dimension are thought to be in small closed loops of some sort.

These theories seem to confirm the religious aspects on the universe, heaven, FFD etc.. to which myself i subscribe.

Answer 6

We humans can experience 3 (4 if you include time) but I believe 11 dimensions are supposed to exist.

PS. It's CERN not SERN (^_-)

Answer 7

we're not sure.

we experience and have proven 4 dimensions but recent studies on particle physics at SERN laboratories in swizerland (yes the same one from angels and demons, yes it's real and yes they have created anti matter artificially) they' may have discovered more.

what i'm referring to is the recent attempts (in the last 2 years) to create artificial black holes, which has succeeded but only for miliseconds and on an atomic level... anyway i' mgetting ahead of myself... in the creation of artificial black holes there were rifts displaying the existance of aditional dimensions. don't ask me how i don't comprehend that bit entirely myself, that's what i get for not following up on popular science articles -_-

Answer 8

There are 4 accepted dimentions by our scientists today. More that are under debate or yet to be proven.

However, there are n number of dimentions yet to be found by us as we do not have the understanding of many things yet due to our limitation of knowledge in quantum physics and mechanics.

Answer 9

2, but then I'm very limited in my outlook, being only an avatar on a flat screen

Answer 10

Including Time four.
A plane where its value can be measured