How many dimensions are there in the universe?

Question

Does any one knows the string theory ? If yes then can you explain it to in a simple way?


lol

Answer 1

Ha! Okay... lemmie take a whack at this. the physical concept of string theory is that the universe consists of a single one-dimensional string that is wrapped and knotted and woven around itself into an incredibly complex fabric that oscillates and laces in and out of dimensions that are beyond the three spatial dimensions we are aware of. The vibrations of those strings are what give particles their physical properties, and these vibrations are said to have hyperdimensional (more than 3D) properties or degrees of freedom, based on vector and matrix calculus that assesses the dimensionality of a phenomena.

Now why in the world would physicists believe such a whacky thing? Well, if the universe is made of these strings, it would explain why subatomic particles behave like waves, and vice versa. A lot of discoveries in quantum physics cannot be explained or understood if you view the universe as a collection of fields and particles. The concept of gravity also poses a problem. But if there is some sort of multi-dimensional fabric that unites all matter and is responsible for all fields and forces, then a lot of the unsolvable issues start to make some sense.

To understand the appeal of the theory, you need to have a very firm and up-to-date understanding of quantum mechanics and the mathematics that support it. To the layperson, there is nothing wrong with the Newtonian view of the universe... to someone with some reasonable physics knowledge, they may understand Einstein's revelations and how that altered the Newtonian view... but now we're talking about resolving logical conflicts that can only be understood by particle physicists that view the universe at an extremely microscopic and experimental level (and at macroscopic levels, in the case of quantum gravity).

So for us it may seem silly to fix what isn't broken by coming up with this strange theory about the universe's composition that is VERY abstract, confusing, and counter-intuitive... but to someone who's studied waves and subatomic particles and has spent the last decade of their lives colliding particles in liquid hydrogen at some giant underground particle accelerator, there is a desperate need of explanation beyond our common understanding of the universe, and string theory is a very promising field for that purpose.

It shoudl be noted that, while it solves many problems on paper, and many of its suppositions are supported by experiment, it is far from a proven theory.

Answer 2

In physics, spacetime is a mathematical model that combines three-dimensional space and one-dimensional time into a single construct called the space-time continuum, in which time plays 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, spacetime is a mere formal option, but in special relativity, space and time are inseparable. The notion of space depends on the observer, as instantaneous events depend on a reference frame. Spacetime is also vital to general relativity, an extension of special relativity that takes gravitation into account.

How many dimensions are needed to describe the universe is still an open question. Speculative theories (such as string theory) predict from 10 to 26 dimensions, but all dimensions other than the usual 4 (3 spatial and 1 temporal) matter only at subatomic scales.

Answer 3

Quoted from my blog, Saturday July 15. 2006:

..."The number of dimensions are all controlled by one M theory, the so-called 11th theory that explaines the 10. The four known dimensions we are familiar with needs just one theory to explain them and how they work and interconnect. We supposedly don't know the fundamental theory behing string theory, but judging from all of the relationships of the individual theories, it must be a very interesting and rich theory, one where distance scales, coupling strengths and even the number of dimensions in spacetime are not fixed concepts but fluid entities that shift with our point of view"....

In a nutshell, I view it as above, except it is more simple than this and more complex. We are still learning this theory that is of itself trying to explain all.
...jj

Answer 4

Basically the universe is woven of extremely miniscule threads whose vibrations caused the formation of matter. Matter bends and warps this woven tapestry of space/time (That's string theory) Sorry, not the best explanation. As for how many dimensions, I know at least four- time is the fourth. As you move through space, you move through time. It's all very fascinating.

Answer 5

dimenions refer to ways of measuring.
you can say length, width, height are the standard way we measure for example east, north,up. but you can also use negative numbers in those dimensions to express west,south,down. so east-west is one dimension. as is north-south. and up-down. it is merely positive or negative direction from any starting or reference point. dimensions measure ways of viewing. time is a dimension because you can say that a certain box in a certain place is only there for a certain time, so in quantum math we say an object has a certain quantum number to explain where it is in 3 space (length,width,height), and we add what time it is there (because it was not always a box in that place, nor will it continue always) making it 4 dimensions.

mathematically you can make an infinite number of dimensions.
if you have different colored dice. each one of them can be considered a dimension in quantum equations. a place holder in a list as it were.
if you have three dice: one blue, one red, and one green. each with 6 faces (dice have faces not sides, sides are on 2 dimensional objects, faces are on 3 dimensional objects).
b,r,g = so a roll of 1 on the blue, 1 on the red, 1 on the green is
1,1,1 and we can say that there are 6^3 (216) number of possible quantum events with 3, 6 faced dice since we use a certain order to keep track of the results. you could roll 12 dice and they could all be slightly different colors, and as long as you have a set order of color when you right down your results you will have 6^12 number of seperate results possible on any roll of (fair) dice

einstein in certain equations used upto 17 dimensions (atleast 10) to explain normal space, if normal space folds (string theory is based upon folding or bending or space).
if space does not fold then atleast 34 dimensions may be needed just to explain the equations of einstein. string theory presumes that the big bang or similar starting events do not have to be linear, string theory can explain linear effects but includes non linear events as well.

easy explanation:
if it did not happen all at once starting from only one place, then it must have started multiple places or multiple times.
bigger words:
so if the big bang for example was not a single time space event then the starting of several seperate formations of confluence to overlap in starting this reality makes the obvious patterns of pan galactic structure easier to understand, because there does not have to occur seperate unbalanced formations near the beginning of the big bang. as a membrane stretched and not uniform, example when you make pudding sometimes a layer of material forms at the top and some people skim off that top skin of pudding, and throw it away, that top layer is a membrane. if different membranes interact and overlap form a interference then such a pattern might produce the desired effect.

a string does not have to curve in a easily defined mathematically way. they can bend or be straight or turn back on itself, or loop or double loop, et cetera.
i hope that helps.

Answer 6

i think there are 5 dimensions...i don't know how i know that
and yes i heard the string theory...fasinating stuff...quantum physics are very hard for common folk to grasp...basically what the string theory says that we are all connected...space and matter by tiny threads like DNA strands...i do think it is a good theory considering that living things break down to DNA and it is a type of string

Answer 7

Generally the substances in the universe is explained by using three dimensions. So there are three dimensions in the universe.

Answer 8

HI, I CANT SURELY TELL THAT THERE IS HOW MANY DIMENSIONS IN THE UNIVERSE BUT FROM MY KNOWLEDGE I CAN TELL THAT THERE CAN BE 6 OR MORE DIMENSIONS.
NO I DO NOT KNOW THE STRING THEORY IF U REALLY WANT TO KNOW YOU CAN REFER TO GOOGLE.COM OR CAN FIND FROM LIBRARY.

Answer 9

Human can identify only three dimension at once, for identify the fourth one you must have some equipment for time measuring.Now as per human limitation we can work only with for dimension.

Answer 10

can u plz tell me bou the string theory,ne way i think there r n number of dimensions.