I kinda understand 4D but(with out making it too complicated im only a 9th grader) how many are there, or how many do we think there are, and what exactly happens when you go up a demension, and what it is.
2007-12-04 06:20:40 · 11 answers · asked by Christian W 1 in Science & Mathematics ➔ Astronomy & Space
For the 5th Dimension, try the Twilight Zone and that 70's singing group.
2007-12-04 06:44:03 · answer #1 · answered by Lorenzo Steed 7 · 0⤊ 0⤋
Boy... that answer will vary from person to person.
You have to consider "closed" dimensions - those that are too small for us to experience. We understand height, width, and depth; and even time as a 'dimension' seems to almost make sense - but there are reasons we expect there to be others.
For example... there's the force of gravity. It's very much weaker than the other 3 forces... Why? Some suspect that there's another universe (not just another dimension, but another SET of dimensions) that gravity 'lives' in, and that what we feel in THIS universe are the left-overs. That means everything you see, everything you touch & feel, is present before you, but MOST of it lives in a place that we can't experience. (Some early theories of Dark Matter cite this as well, but they've abandoned that thought.)
There are "proofs" that say at least 9 dimensions are present; and there are theories (string theory, in particular) that claim that there are up to 14 dimensions. (Some of these dimensions exist in a very small area - hundreds to thousands could fit inside the volume of a hydrogen atom).
String theory *needs* these dimensions to explain propogation of different forces - the Strong Nuclear force and the Weak Nuclear force, for example. It's also an explanation why these two forces act only over a certain distance - within the width of a neutron or protron - then suddenly die off.
I'm of the mind that there are 9 dimensions, with the possibility of more.
2007-12-04 06:31:24 · answer #2 · answered by quantumclaustrophobe 7 · 0⤊ 0⤋
There are 5 known dimensions. Height, width, length, time and space. The passage of time is a dimension. A tree will look completely different in 50 years. Space means that nothing is in the same place from moment to moment. The Earth rotates and revolves around the Sun as the entire Solar System moves through space.
2016-02-28 18:49:55 · answer #3 · answered by JAMES 1 · 0⤊ 0⤋
4
2007-12-04 06:40:55 · answer #4 · answered by blessedboy 1 · 0⤊ 0⤋
Physically, a dimension is a direction. There are 3 spatial dimensions and a time dimension. You might also consider mass a dimension. According to several string theories, there are more than 3 spatial dimensions.
In math, "dimension" has many meanings, but essentially a dimension is simply a variable, and there is no limit to the number of dimensions.
2007-12-04 06:42:42 · answer #5 · answered by John B 6 · 0⤊ 0⤋
Basically a dimension is a direction in which you can move that is not just some combination of the other directions. Traditionally we think of 3 spatial (space) dimensions and one temporal (time) dimension. The reason there are AT LEAST three spatial dimensions is that we can move move up/down, left/right, and backward/forward (each of these can be thought of as a dimension). The reason there may be AT MOST three spatial dimensions is that every direction we can move is some combination of up/down, left/right and backward/forward.
Some theories of physics propose that there could be other spatial dimensions. The reason we are not generally aware of these dimensions is because we can only move a very short (submicroscopic) distance in the directions they represent. One way to think of this is to think of a vast pool of water that is very very shallow. The organisms living in the pool might think that there are only 2 dimensions in the universe because they can only move left/right and backward/forward. In reality though, they may also be moving very slight differences up and down (within the very very shallow pool) without noticing it. Our universe might be like this pool except with three "big" dimensions and maybe 7 or 8 "little" dimensions that we don't notice.
2007-12-04 06:30:44 · answer #6 · answered by smcwhtdtmc 5 · 1⤊ 0⤋
In string theory there are lots of extra dimensions (up to 26), most of which are so small they would have no observable existence. Whether any of these dimensions actually exist is questionable. String theory is currently the big thing in physics, the only problem with it is that it is completely unverifiable, which makes it UNSCIENTIFIC. Of course reality really doesn't have to be verifiable by humans to be real. The universe can easily be stranger than we CAN know. We may be much too stupid to actually comprehend the actual structure of the universe.
2007-12-04 06:38:42 · answer #7 · answered by Anonymous · 1⤊ 0⤋
questionably 4 dimensions
3 for sure
2007-12-04 06:29:38 · answer #8 · answered by Anonymous · 0⤊ 0⤋
As far as I understand(so sorry if this is COMPLETELY off)
1D is a straight line _____
2D is straight and side to side + (but not up or down)
3D is like a cube. And you know...everything you can touch
"4D" is time. <--that's what I've heard anyway
2007-12-04 06:26:29 · answer #9 · answered by A 5 · 0⤊ 1⤋
3/w strong implecations of a 4th
2007-12-04 06:23:44 · answer #10 · answered by froggyontop 6 · 0⤊ 0⤋