# What are the dimentions exactly?

Discussion in 'Astronomy, Exobiology, & Cosmology' started by Shadow1, Jun 25, 2010.

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what are the dimentions exaclty, and how many dimention is their, are they infiny? is a dimention, sci-fic, or true?
dimentions, are they our same world, our same planet for example, but on another frequency? if yes, what does that means exactly, can we detect the other dimentions? are they from matter like we know? or also other frequency of matter? what they exactly? if they exist, wht's their role? do they keep the balance of the univerce? what's their role?
i really hope if you can try to use partially simple english, i mean not too complicated things

3. ### BlindmanValued Senior Member

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Up down, left right, forward back, yesterday tomorrow..

Human constructs to help us make sense of the world... Nothing more.

5. ### skaughtThe field its covered in bloodValued Senior Member

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Its nearly impossible to explain this using simple english:

We live in a universe that has 3 dimensions of space, and 1 dimension of time.

the three dimensions of space are:

up/down
forward/backward
left/right

The one dimension of time, is just that; time.

We do not know if a universe exists that is composed of 4 spatial dimensions. And there is nearly no way to know for certain. If there are higher dimensions. They are right "above" us so to speak.

Imagine a 2 dimensional universe that consists of only up/down, and left/right. Such as on the surface of a piece of paper. Imagine there are beings who live on this surface. They can travel to the top or bottom of the piece of paper, or they can travel from the right to the left side. But they cannot come up off of the paper, this is because since they live in a 2 dimensional universe, they are also only two dimensional. they have length and width, but not height. They cannot even look up off of the piece of paper.

Now imagine I put another piece of paper on top of the first piece of paper. The beings on the first piece of paper will not even be aware that the second piece of paper exists. Even though it is so incredibly close to their own universe.

What language do you speak naturally? What country do you live in?

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ok, this is tooo much simple, what i meant by no too much complicated language, is the maths thing, because i'm still in hightschool, my native language is arabic. well it's complicated to explain, we have the arabic dilact, the official arabic is the arabic fus'ha, the first official language of all arab countries and the lanaguage that you'de learn if you wanted to learn arabic, it's the correct one, with many grammar rules, many many, but it's not hard for who studied it for along time and rased on an arabic dilact wich it is close to the correct one, so naturally i speak the arabic tunisian dilact(ok that answered where am i from) wich also it is close to the "maghrebian" arabic dilact in general, algeria, a maghrebian country, their arabic dilact is hard to understand for us in here, but they can use another algerian dilact wich it have less brocken french words, and slower, also the gulf countries, can speak their a dilact, wich you will never understand anything in it, because they talk fast, but they can slow it down and change a few words, and you'll understand it very good, it is complicated, it needs a hall threat, ...anyway my second language is french, but i'm better in english than frensh, english is my third language, and next year i'll be learning spanish, i choosed spanish in school, and a very little japanese, there's no language school that teach japanese in my city

and blablablabla...

anyway,; the time itself, is a very complicated thing, for example, what is time, i know what's time in regular meaning, but, what is actually the time, is it energy? or maybe the manager, that controlls the balance of the univerce, but, does time really exist? i mean, things just happends, and move thank to the gravity, and everything continue and continue on a specific order and steps, should we call that "time" as we know? i don't think time really exist, "time" as we know, is just a mesuring system we invented it to manage our life, anyway, i maked a topic about it and it never ended, so, if time exist, and it is a dimention of the univerce, that means there is a chance, for humans, to live longuer on a second earth somwhere, for example, that earth's day is longer, and that earth's year is 10 years earth time, so if we take humans their, and by the gravity system of that planet, and by "time" mesuring system on that planet, and how all that affect on the things that goes on the planet, so, human who will live 80 here, will live for 800 earth years on there, (suposing time exist);; and if time exist, time as we know it, then, we can reach the planet mars in an earth second, and by the speed of a cat, if we could manage that "time", so time as we know, and time that keeps the balance and wich it is a dimention in the univerce, shouldn't be called time at all, or it's not time like our time, it's not something simple, the tiem we know, can be changed from a planet to another, on earth, you can call 24 hours and some seconds, a day, and on a planet x for example, you can call 95hours a day.

what i meant in this threat, is more related to sci-fiction,like, another earth, exactly in the same position and the same time of ours, or let's say another univerce wich it is a copy of ours, but ike, it's on another frequency, or, another univerce, parallele to our same univerce, not parallele like two pieaces of paper, but, like in the same space, but on another frequency(just an example, i mean the frenquency thing, i don't know how to explain it, i have it in my mind; but, i don't know how to explain it, ) but it is different than ours, but defferently same physic laws, cause after all, it's all a one structure, and it's all(the suposed univerces) related to each other.

Last edited: Jun 25, 2010
8. ### DywyddyrPenguinaciously duckalicious.Valued Senior Member

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No it doesn't.

You're misusing the word dimension here: that's the science-fiction (or more probably, science-fantasy) meaning. Not the actual one.

And the "frequency thing" is pure nonsense.

9. ### GeoffPCaput gerat lupinumValued Senior Member

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What are the dimensions? They are of sound, of sight, of mind. You're moving into a land of both shadow and substance, of things and ideas.

10. ### kurrosRegistered Senior Member

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I feel like someone has to throw in a mathy answer.

Consider a function of 7 variables:

$f = f(a,b,c,d,e,f,g,h)$

This function is defined over a 7 dimensional parameter space. If you wanted to know what the value of this function was at some point in the (a,b,c,d,e,f,g,h) space you would need to specify 7 things, i.e. the location of the point you are interested in.

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ah, i get it

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well, in the first place, i didnt meant normal dimentions, i meant more like in sci-fiction, another dimention, and and..that's what i meant actually, couldn't be their a chance, that this sci-fic or sci-fanatasy, have some kind of truth, i mean, like in past, going to moon, or landing on it, or going to space, or sending robots to other planets, was just a sci-fic, but, it had something to do with reality and possibility, so is their a possibility that the sci-fic dimentions thing, ehave some truth in it.?

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the same thing we thoght about landing on moon or sending robots to other planets in the past, but today, it's not impossible, i didnt say it's like the sci-fiction exactly, i mean, could it have some truth in it, like the old sci-fiction movies, their are many sci-fic things, that are today possible to make, like cloning, like going out to space, like space tourism(just started, and it will start in 2012 with the first space hotel)etc etc etc... i think their's always some truth behind it.
i know, i just used it as an expression, i didnt mean exactly a frequency thing, i more meant, two things, are exactly in the same place, but not together in the same place, i don't know how to explain it.

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15. ### Kernl SandrsRegistered Senior Member

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If your English is good enough to watch videos then may I recommend these:

Part one and Part two.

Kind of interesting...

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my english is good ennuf to watch a movie without a translation, i'm very used to watch english films that are subtitled in tv. , in many tv channels, they're good,

mbc max, mbc2, mbc action, mbc4, fox movies, fox series, dubai one, etc etc etc...
thanks for the links, i'll check them out,

17. ### DywyddyrPenguinaciously duckalicious.Valued Senior Member

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Not the same thing at all. The science-fictional use of the word "dimension" is synonymous with "reality". It's a misuse.

If that were the case then, obviously, we'd never know. For two things to be in the same place at the same time there'd have to be a total lack of interaction. Otherwise...

18. ### VotorxStill egotistic...Valued Senior Member

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I skimmed over the thread and it doesn't seem like anyone's provided the correct answer. Let me try.

There are three spatial dimensions. These dimensions can be drawn on a graph. A shape with zero dimensions is a point. One dimension is always a straight line (length or width). Two dimensions can be a square (length and width). Three dimensions can be a cube (length, width and depth).

Theoretically there can be any number of spatial dimensions. For instance a four dimensional shape is called a tesseract and anything above is generally considered a hypercube. This is all actual geometry but science fiction borrows from it all the time.

In reality there are only three dimensions. Time is NOT the fourth dimension. Don't let anybody tell you otherwise, the idea was scrapped after Einstein developed space-time. Though, to be fair, it is a theory so think what you like.

19. ### DywyddyrPenguinaciously duckalicious.Valued Senior Member

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Well at least you're maintaining the average.

Yes.

Incorrect. There are 3 spatial dimensions though.

Someone is getting confused. Time is a dimension and can be regarded as the "fourth" for spacetime purposes.

20. ### kurrosRegistered Senior Member

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Time isn't a spatial dimension but it is still a dimension. And in relativity it gets all mixed up with the spatial dimensions so it doesn't seem to be totally separate.

When one does basic mechanics problems only have dimensions of length, time and mass. When one does basic electromagnetism electric charge gets thrown in as well. You can get abstract too if you like, if you are describing a pixel on your monitor you could describe it with dimensions of (red,green,blue), i.e. the color lives in a 3 dimensional space.

Of course the space and time dimensions have something of a special place in physics.

21. ### stateofmindseeker of liesValued Senior Member

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Dywyd is stuck on repeat again... can someone get the mechanic? SNORE.

Everyone knows what dimensions are in math Dywyd... there's as many as you want... we get it.. now can we please move on!? Those kind of dimensions are not what this thread is about as indicated by the OP - therefore you are either attempting to hijack this thread or you are trolling in which case you should give yourself a warning immediately! :spank:

22. ### DywyddyrPenguinaciously duckalicious.Valued Senior Member

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Yet all you can manage is to complain, instead of offering any rational rebuttal.

It would appear not.
And time isn't a mathematical construct...

The OP is unclear and more than a little incoherent.

Wrong again: I'm replying to the OP. And since this isn't my sub-forum I can't administer warning.

23. ### John99BannedBanned

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There are no dimensions. You can call directions a dimension but it really doesnt matter. Time is relative but does not rely on anything, we can argue that things (whatever they may be) rely on time but it is just a matter of being aware of time.