Large Hardon Collider

[Ferion]

Me has a question too, should be fairly simple to answer, and I should probably look it up, but I like the examples XD. This may delve into string theory, which I'm sure many of you aren't fans of (ok maybe maybe not, I don't even know), but what is 4d, 5d etc? Do they exist? Is the "4th dimension" time?

Not sure if Miz answered your question and he can probably do a much better job explaining it, but I thought this video was pretty good at helping you picture the different dimensions.

[Chun Liroy]

Before I say anything -- awesome and informative video thanks for posting it. But after watching it:

http://beingascrub.files.wordpress.c...ll-of-fuck.jpg

[Psion]

Let's change this topic before Psion comes in claiming he can talk to Jesus via telepathy as he posts under his 'Charles Xavier' pen name.

Jesus is an asshole, I wouldn't mindlink with him if he were the last brain in the universe!
But I always thought that free will and destiny both existed myself, destiny being the result of other people's free wills affecting you and free will being your own actions and decisions in response to these. Who knows, though, that question requires enough brainpower to think through to melt steel.

[Mizango]

lol, well done.

[Altariel]

Going back to the question about the nature of time, it might be helpful to think more literally about it as being the fourth dimension. We label different events as being "here" or "there" because they occur at different points along the 3 familiar directions. We label different events "now" and "then" in much the same way, as occurring at different points along the time dimension. While we can take a walk (or a jump) in any of the three familiar directions, we don't often think of our movement through time.

Special relatively asserts however that our motion through space is always linked to our motion through time. In fact they are linked in a very precise way, our motion through space plus our motion through time always equals the speed of light. This accounts for why we can never travel faster than the speed of light (it would assume we ceased traveling through time) as well as what we from Flight of the Navigator as a kid, that "time slows down as you approach the speed of light." Relativistic effects are much to small to notice in everyday life but they can be measured here on Earth too. A famous test of relativity was conducted by placing atomic clocks on 2 airplanes and flying them around the world then comparing them to the clock at the naval observatory and they of course did not agree afterwards due to the motion of the planes relative to the stationary clock.

[Woozie]

K, so witchcraft.

fuck! i actually agree with psion.

If you think that's bad, wait till you find out that photons can be in two (or infinity) places at once, are both particles and waves, can communicate instantaneously across any distance, can predict the future (or communicate with it's past), and knows when they're being watched by scientist.

(Those are the impressions you'll get when you learn about the following: superposition principle, wave-particle duality, quantum entanglement/epr paradox, Reverse Time Quantum Eraser, collapse of the wave function/basic quantum theory)

[Chun Liroy]

If you think that's bad, wait till you find out that photons can be in two (or infinity) places at once, are both particles and waves, can communicate instantaneously across any distance, can predict the future (or communicate with it's past), and knows when they're being watched by scientist.

(Those are the impressions you'll get when you learn about the following: superposition principle, wave-particle duality, quantum entanglement/epr paradox, Reverse Time Quantum Eraser, collapse of the wave function/basic quantum theory)

I LEARNED THIS ALREADY. What do I get woozie?!

[Eliseos]

Reverse Time Quantum Eraser

http://www.cisci.net/movies/film_17/...0/Eraser_1.jpg

I wish I was good at shooping.

[Plow]

Before I say anything -- awesome and informative video thanks for posting it. But after watching it:

http://beingascrub.files.wordpress.c...ll-of-fuck.jpg

Just in case anyone really does get lost, I'm going to try to make that video into a list of the "10" dimensions, in completely unscientific and as simple as possible terms.

For most of the steps, basically, as you move on the level below it becomes considered as a single point, and you're drawing a new line between it and another version of it.

1. a point
2. height, width
3. height, width, depth
4. height, width, depth, duration
5. individual quantum branching, the idea that each decision/action/etc creates a different universe, along different branches of time
6. 5, on a universal level. all the different possibilities for our universe between big bang and end
7. a line between all the different possibilities for our universe, and all the other possibilities for another single universe
8. branches in that line to all the possibilities for all other universes
9. all branches in all possibilities of all universes everywhere combined into one single point
10. there's nothing else left to draw a line to here


I think... please correct me if I'm wrong, this is shit I've been curious about since I was like 14.

It's hard to describe it super precisely while being that simple, especially because so much of it is like "ok, get to here, and start over with everything before as a single point, and try to picture the 8th dimension as a 2 dimensional 7th dimension blah blah."

[Kaylia]

Just in case anyone really does get lost, I'm going to try to make that video into a list of the "10" dimensions, in completely unscientific and as simple as possible terms.

For most of the steps, basically, as you move on the level below it becomes considered as a single point, and you're drawing a new line between it and another version of it.

1. a point
2. height, width
3. height, width, depth
4. height, width, depth, duration
5. individual quantum branching, the idea that each decision/action/etc creates a different universe, along different branches of time
6. 5, on a universal level. all the different possibilities for our universe between big bang and end
7. a line between all the different possibilities for our universe, and all the other possibilities for another single universe
8. branches in that line to all the possibilities for all other universes
9. all branches in all possibilities of all universes everywhere combined into one single point
10. there's nothing else left to draw a line to here


I think... please correct me if I'm wrong, this is shit I've been curious about since I was like 14.

It's hard to describe it super precisely while being that simple, especially because so much of it is like "ok, get to here, and start over with everything before as a single point, and try to picture the 8th dimension as a 2 dimensional 7th dimension blah blah."

1. x1
2. x2
3. x3
4. x4
...
n. xn

Stop thinking after 4. Let the maths do it for you!



Dimension in physics depend entirely of the context. Usually, the first three represents all 3 space axis, and time is the 4th because that's all we need to describe the position of any objects. A 5th dimension could be anything you imagine, a multiverse is just one of the many possibilities. In the end, we might not even need one.


If we are talking about a geometric space, we typically have
0. point (there is no degree freedom at all, it's always the same value).
1. line (any number between -infinity to infinity, or the distance between 0 and the x)
2. surface (a point on the graph with two coordinates (x,y), the surface limited between 0 and x, 0 and y)
3. volume (a point on the graph with three coordinates (x,y,z), the volume limited between 0 and x, 0 and y, 0 and z)
4. Due to physical limitation, it become impossible to draw an object in 4 dimensions. Because of this, we often use time to imagine what it could be like, but that's just a trick because you still only see 3 at any time..
5+. Same as above. We can makes a series of graph that show the projection of the higher dimension into a lower one, but that's cheating.

[Lhyet]

I don't know how many BBC shows you guys get in America, but they're currently airing a show called Wonders of the Universe by a physicist called Brian Cox (who also works on ATLAS at the LHC). He's done a number of books and shows that explain things about the solar system/galaxy/universe.

In the previous episode he spoke about stars and what they're made of and such, which included a piece about Betelgeuse. This week it's all about gravity, explaining general relativity, neutron stars, black holes and all other awesome things in that subject.

Anyone else been watching it?

[Mizango]

Yes, I absolutely love Brian Cox. I have that series downloaded. Unfortunately we have to catch that show online or on the Science channel. Best show, hands down.

[Mizango]

In the previous episode he spoke about stars and what they're made of and such, which included a piece about Betelgeuse. This week it's all about gravity, explaining general relativity, neutron stars, black holes and all other awesome things in that subject.

Always the most interesting subject. Anything regarding GR and gravity always keeps my attention, definitely going to check it out.

[Lhyet]

Yeah, was an awesome episode. I've always been fascinated by neutron stars because it's so amazing to imagine something so small yet so dense and how fast it rotates. Being shown a CG video of such a thing always fills me with such wonder. It really is beyond me how people don't find these things fascinating.

[Mizango]

Exactly right.

[Jodwahh]

I think it was last week he said that if you counted every single atom in the universe, and each atom was equal to one year then the universe would exist longer than that total figure. Mind boggling stuff fo cereal.

[foopy]

I think it was last week he said that if you counted every single atom in the universe, and each atom was equal to one year then the universe would exist longer than that total figure. Mind boggling stuff fo cereal.

what?

The estimated age of the universe is 13.75 ± 0.11 billion[1] years (alternatively Gigayears or 10^9 years). - http://en.wikipedia.org/wiki/Age_of_the_universe

The number of atoms in the entire observable universe is estimated to be within the range of 10^78 to 10^82. - http://www.universetoday.com/36302/a...-the-universe/

10^9 is no where close to 10^78.

or are you saying that the universe WILL exist greater than 10^78 years? my reading comprehension of your sentence is le'fail.

[Jodwahh]

what?

The estimated age of the universe is 13.75 ± 0.11 billion[1] years (alternatively Gigayears or 10^9 years). - http://en.wikipedia.org/wiki/Age_of_the_universe

The number of atoms in the entire observable universe is estimated to be within the range of 10^78 to 10^82. - http://www.universetoday.com/36302/a...-the-universe/

10^9 is no where close to 10^78.

or are you saying that the universe WILL greater than 10^78 years? my reading comprehension of your sentence is le'fail.

You nailed it in the bolded part, apologies I didn't phrase it better.

[Kaylia]

I think it was last week he said that if you counted every single atom in the universe, and each atom was equal to one year then the universe would exist longer than that total figure. Mind boggling stuff fo cereal.

If you count every cells in your body and equate them to one year...I don't know, feel like a weird comparison. There is little relation between time and atoms other than what GR has told us about mass.

[Jodwahh]

He wasn't trying to make a relationship between atoms and time apart from the fact that the universe will exist longer than the amount of atoms in it if each atom was equal to 1 year. I think you might of over thought it from what it was: a fairly cool factoid.