O_O....if someone/thing is in a higher demension how come there is no evidence of it in our world? ex. you draw a box...it is 2d...you put a point in the iddle of the box...the box is like...wtf...where did he come from...he doesnt know where, but he knows that there is a dot (evidence) ...where is our evidence? hasnt been found yet? happened already and was skipped over? define evidence? maybe it will happen in another universe and our universe is never effected? the point is, in our current state, we cant know for fact...but, i like the theories because eventually, maybe we will know...but then again, string theory maybe become like modern religion is today and ****** our world up...so...is it good because we could possibly expand our knowlege to unfathomable events, or is it bad because when there is one beleif, there is always an opposite despite all proof...then again over time people seem to see facts more resonably (people letting go of the flat earth theory and moving on to round) ...AHHHH *mind pops*
I love it when really complex stuff is shown in ADD-friendly animated form. There should be entire college degree programs available as a DVD collection with cool stuff like this. (I've been thinking about making a fun introductory calculus video for a while. Anybody want to help?)
Braznor
Diamond Member
- Oct 9, 2005
- 4,767
- 435
- 126
I read this and went ouch!!!!
http://en.wikipedia.org/wiki/Neutron_star
if an average human were to encounter a neutron star, they would impact with roughly the energy yield of a 200 megaton explosion (a power equivalent to four times the Tsar Bomba, the biggest nuclear weapon ever detonated).[2]
http://en.wikipedia.org/wiki/Neutron_star
if an average human were to encounter a neutron star, they would impact with roughly the energy yield of a 200 megaton explosion (a power equivalent to four times the Tsar Bomba, the biggest nuclear weapon ever detonated).[2]
I think the ant on the paper explains it best. An extra dimension makes curvature possible. Curvature is merely a gradual warp from one dimension to another. I circle on a plane, for example, is a gradual warp, moving in a counter-clockwise fashion, from the positive y, to the negative x, to the negative y, to the positive x, and returning to the positive y. Curvature of a 2D function requires analysis of the second derivative, which only exists as a nontrivial solution in polynomial orders of 2 or higher. (A straight line of nonzero slope has a non-zero first derivative, but this derivative is constant, and approprite rotation of the x and y axis yields again a zero derivative. No matter how you rotate the origin, though, your second derivative will be zero.) A general polynomial of order 2 requires three coefficients. Even when normalized, it requires a bare mininum of two coefficients to know the roots. These two coefficients are like the two dimensions to know the shape solution curve with a third being required to know the y scale. Dimensions are, after all, merely a description of a location.
Now, imagine the possibilities of 10-dimensional polar coordinates. You either have a length (R shown here) or an angle (A), with a minimum of one length.
3D:
Cartesian (R R R)
Cylindrical (R R A)
Spherical (R A A)
10D:
R R R R R R R R R R
R R R R R R R R R A
R R R R R R R R A A
R R R R R R R A A A
R R R R R R A A A A
R R R R R A A A A A
R R R R A A A A A A
R R R A A A A A A A
R R A A A A A A A A
R A A A A A A A A A
By the way, with the way they were describing the 10 dimensions, the 10th doesn't really exist as a dimension if nothing can traverse it. You could say there are infinitely many dimensions if that was the case, since nothing can traverse those either. A dimension is only meaningful if there are at least two states along it that conflict. An ant on a plane, for example, might be able to philosophically dream of a third dimension, but unless it makes use of it (like walking along a curved paper) it's meaningless garbage.
That's a good explanation, and it goes in line with what I was saying. Extra dimensions make curvature possible. In your paper example, your pencil was able to curve around the 2D safe because of its third dimension.
silverpig
Lifer
- Jul 29, 2001
- 27,703
- 12
- 81
Not quite. You can have curvature in 3d without needing a 4th dimension. What's more, on a large scale, we can see some curvature (at least locally) in our universe. However, we know that there is no large 4th dimension in which our universe is embedded.
newParadigm
Diamond Member
- Jul 30, 2003
- 3,667
- 1
- 0
pontifex
Lifer
- Dec 5, 2000
- 43,804
- 46
- 91
wow, this forum amazes me in the things its members believe and don't believ in. it makes no sense.
there's an overwhelming no response to some things and an overwhelming yes response to others, even though they're plausibility is equal...
like the majority don't believe in paranormal stuff but most of you believe in other dimensions????????
there's an overwhelming no response to some things and an overwhelming yes response to others, even though they're plausibility is equal...
like the majority don't believe in paranormal stuff but most of you believe in other dimensions????????
Other spacial dimensions has nothing to do with the paranormal though (in its usual context of spirits, ghosts, etc). These extra dimensions are predicted by quantum physics. And don't confuse it with movies that depict other dimensions as otherworldly places with aliens and strange things like hyperdimensional white mice, it's not like that at all. It's just more like another side to a coin we haven't seen yet.
Many of the mathematical calculations regarding the curvature of the universe require a 4th physical demention to work out. If I remember correctly many of these were some of Einsteins theories. As said before the Quantum Mechanics also predict that further physical dementions may exist but additional laws governing each successive demension might change the equations.
Unfortunately for Flatland lovers we cannot use our understanding of 2 demensional and one dementional projections of 3 dementional objects as a guide to 3 dementional existense in a multidementional universe, because as far as we know no examples of actual 2 or one dementional matter exists. Our depiction of a 2 dementional object actual involves 3 dementional matter, whether it is paper and graphite, or electons and photons around a LCD.
Unfortunately for Flatland lovers we cannot use our understanding of 2 demensional and one dementional projections of 3 dementional objects as a guide to 3 dementional existense in a multidementional universe, because as far as we know no examples of actual 2 or one dementional matter exists. Our depiction of a 2 dementional object actual involves 3 dementional matter, whether it is paper and graphite, or electons and photons around a LCD.
Special Theory of Relativity.
Other Dimensions are needed to explain a lot of things and tie different forces in the universe together.
A question that you could try to answer yourself is how come gravity is so weak compared to other forces? One weak magnet can defeat the gravity of the whole earth pulling on it. String, or Brane, theory says that gravity is leaking into other planes or membranes of dimensions/universes (if you believe in mutli-universe theories as many physicists are starting to ponder).
to assume that our perception of the universe is the end all be all and there is nothing else beyond that would be incredibly ingnorant.
silverpig
Lifer
- Jul 29, 2001
- 27,703
- 12
- 81
Uh, the curvature of spacetime doesn't require a 4th spatial dimension. It works as it should with 3 space + 1 time. Quantum mechanics makes no such prediction that I am aware of. Sure, you can write a 4,5,6, or 52 dimensional hamiltonian, but that doesn't mean it's physical.
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