Quote from anbiddulph :

the way i see it is that once something reaches a certian size, it would stop srinking, isnt it the atoms getting closer together what makes freezing liquids smaller? then wouldnt it get to a stage where the atoms cannot get any more compacted?

When atoms get very close to 0 K, they start to mate with each other in a fantastic quantic gang bang. The realisator of this porn movie is Bose and the productor is einstein.

Things contract linearly most of the time, but at extremes it's non-linear.

So it's more like a curve that's straight for most of the way?

that line is only valid for ideal gasesn which dont exist

Dougie - yes, pretty much.

Lerts - we're talking about solids here, not gases. But you would be correct that an ideal gas doesn't exist yet, although the Noble gases get reasonably close for most situations.

i would like to, for once more, point out that he can't solve a simple 2 variable system of equation, doesn't even check his calculations, can't solve basic mechanics and confuses philosophy, science and religion. also, he doesn't seem to understand what a logical fallacy is. in fact, i expect him to consider 'logic' as some kind of conspiracy...

they're into your mind lerts. they are controlling you...

Quote from george_tsiros :

i would like to, for once more, point out that he can't solve a simple 2 variable system of equation, doesn't even check his calculations, can't solve basic mechanics and confuses philosophy, science and religion. also, he doesn't seem to understand what a logical fallacy is. in fact, i expect him to consider 'logic' as some kind of conspiracy...

they're into your mind lerts. they are controlling you...

this is why we love lerts

actually a solid object doesnt contract that much

absolut 0 was discover because as doughy pointed out somebody saw air contracted in a linear fashion with temperature what made posible calculating that -273º

Magnitude of contraction hasn't been mentioned, only that some contraction occurs as temperature drops, just as things expand with heat. It's small, but can be very important.

The -273.15° has been shown experimentally and theoretically as being the point at which molecules stop. I think the closest humans have got to it has been something along the lines of -273.13°, but that's from memory and could be checked if I could be bothered (but I can't, as it's not that important).

The closest we've got it to absolute zero is a few millionths degree above it. This is where funny stuff happens, such as the Bose-Einstein condensate, where particles seem to lose their distinction/identity and transform into waves of some sort.

If you have two hours spare to watch a very interesting documentation, go here
Absolute Zero - The Conquest of Cold (part 1)
Absolute Zero - The Race for Absolute Zero (part 2)

The technologies used to reach such temperatures are simply mind boggling when you think about them.

:banana_ra

oh the smilies here are so awesome im not sure i wanna leave, why can once in a while a mod jump and say hey personal attacks no good

Quote from AndroidXP :

The closest we've got it to absolute zero is a few millionths degree above it. This is where funny stuff happens, such as the Bose-Einstein condensate, where particles seem to lose their distinction/identity and transform into waves of some sort.

If you have two hours spare to watch a very interesting documentation, go here
Absolute Zero - The Conquest of Cold (part 1)
Absolute Zero - The Race for Absolute Zero (part 2)

The technologies used to reach such temperatures are simply mind boggling when you think about them.

that is absolutly crazy.

EDIT: finished watching it, that has changed my grasp on matter and quantom mecanics and everything! i cant believe atoms to that. my heads F***ed

Lerts, watch it!

...why is there no reference or talk of a constant trajectory of everything?
From the bang everything is constant and expanding outward like a bubble yes/no? and dark matter is the outside or face of the bubble yes/no? If the bubble is constantly accelerating and expanding faster than light and everyhing in the bubble, how are we ever going to detect it with anything because anything is slower than expansion away from us:wtf2:?

Quote from Galactic supercrash proves rarity of antimatter

* 19:57 02 September 2008
* NewScientist.com news service
* Anil Ananthaswamy

:

Matter bubble

The fraction of mixed matter observed is less than a few parts per million. Steigman says this excludes any significant amount of antimatter on scales up to about 65 million light years.

The research has implications for the theory of inflation, a period in which space expanded exponentially moments after the big bang. Inflation could have separated neighbouring regions of matter and antimatter before they annihilated each other.

Figuring out if there is any antimatter within the observable universe could tell cosmologists about how long inflation lasted.

For instance, some models of inflation suggest that antimatter that was once adjacent to matter would now be outside the observable universe. Other models show that it might be separated on the scale of superclusters of galaxies.

"That's why there is interest in whether we have entirely excluded antimatter [from the universe] or simply forced it to a very large scale," says Steigman.

Quote from lerts :

...are we watching an outwards growing spiral with time forward or an inwards shrinking spiral with time backwards, theres just not way to know

Actually there is plenty of ways of knowing the answer. I recommend that you read "In The Beginning" by John Gribbin, and "The Vindication Of The Big Bang Theory" by Barry Parker. While some theories have evolved since these books were first published, the information they contain is still relevant and the books will tell you what you need to know.

but if universe keeps expanding forever potential gravitational energy would become infinite

that if you suppose vacuum or dark energy infinite

and isnt vacuum infinite?

the bigbang could also just be local

i prefer to look for the truth in myths, for example hindues consider time infinite with a big bang and big crunch that make an eon

judeochristian on the other hand believe in a beggining and end just like current physics

and i dont like the bigbang theory very much because it kinds of require god, who put all that energy in a tiny spot?

Quote from CSU1 :

...why is there no reference or talk of a constant trajectory of everything?
From the bang everything is constant and expanding outward like a bubble yes/no? and dark matter is the outside or face of the bubble yes/no? If the bubble is constantly accelerating and expanding faster than light and everyhing in the bubble, how are we ever going to detect it with anything because anything is slower than expansion away from us:wtf2:?

No not everything is constant. Huge gravitational forces are tugging at entire clusters of galaxies. Also, the expanding bubble analogy isn't exactly accurate either. The space between objects is actually expanding in addition to their outward movement 'through' space.

Quote from lerts :

but if universe keeps expanding forever potential gravitational energy would become infinite

that if you suppose vacuum or dark energy infinite

and isnt vacuum infinite?

the bigbang could also just be local

i prefer to look for the truth in myths, for example hindues consider time infinite with a big bang and big crunch that make an eon

judeochristian on the other hand believe in a beggining and end just like current physics

and i dont like the bigbang theory very much because it kinds of require god, who put all that energy in a tiny spot?

The universe does not exist in a vacuum, space is full of all sorts of stuff.

The universe will not keep expanding forever, most cosmologists are fairly sure of that now.

The universe is not infinite because it is made up of space, which is still expanding - in fact "growing" or "stretching" may be a more appropriate term. Our universe has an edge, it is not infinite.

The big bang is almost certainly local and our universe is almost certainly not the only one in existence.

If you wish to learn from myths it is likely that you will misinterpret facts unintentionally. Not that facts can't be found in myths, legends and stories, but they aren't a good place to draw theories from with so much real data available to you in the sciences.

Judeo-Christians have proven time and again throughout history that they will believe any rubbish at all with no proof or reason and will edit the truth to suit their own paradigm, so I'd flag them as a long shot if I were you.

The big band theory requires no God, not that you could explain or comprehend such an phenomenon as "God" as it is championed by religions anyway.

i had once the theory that gravity is the simultaneous expansion of matter, matter would double size ever 30 seconds accelerating the ground upwards and nailing us to it as it accelerates up

actualy i think relativity makes this imposible to disprove

instead of considering the object falling i consider the ground going up

wouldnt this match the inflationing theory about the universe?

Except that if you keep the same mass but increase the surface area indefinitely, you get... well, basically a gas.

Your brain is a scary place my friend

well the atoms would inflate as well

yet wouldnt explain completely gravity, why orbits

There is no such thing as orbit, what happens is tiny spermoids tow things around in circles to generate energy which they feed on. The earth is actually flat, the universe is 2D, but because our eyes are 3D everything looks round and 3D and not flat and 2D which it actually is. Moreover our universe is just a wart on a giant monsters face, and to travel faster than light we need to turn off all the lights.

Quote from atc Quicksilver :

there Is No Such Thing As Orbit, What Happens Is Tiny Spermoids Tow Things Around In Circles To Generate Energy Which They Feed On. The Earth Is Actually Flat, The Universe Is 2d, But Because Our Eyes Are 3d Everything Looks Round And 3d And Not Flat And 2d Which It Actually Is. Moreover Our Universe Is Just A Wart On A Giant Monsters Face, And To Travel Faster Than Light We Need To Turn Off All The Lights.

Xdddddddddddddddddddddddddddddddddddddddddddddd

Quote from Gunn :

The big band theory requires no God

Correct, but it does require trombones, saxophones and white tuxedos.

Quote from lerts :

instead of considering the object falling i consider the ground going up

That's why we all need strong legs, to help push the ground back down.

Quote from lerts :

who put all that energy in a tiny spot?

I bet we is like Orion's Belt in M.I.B...the whole Galaxy compressed within other bigger Galaxy's. i read at one point our Galaxy could fit into the palm of your hand and then exploded. I'm taking this for the truth for arguments sake.

Understanding that there are Galactic sized forces at play in the galaxy is easy because we can just look at the scaled down version we have here on earth. This seems to be the limit of our knowledge though, just because we observe and understand 'the weather systems' of the galaxy does not mean that each and every cluster or neighborhood of galaxy's does not have a constant trajectory, in fact( afaik:shrug )for the bang theory, this must be the case(because it was the size of a small melon and exploded!), i just can't imagine everything is so chaotic.

If(a big if xb)this is the case, we have coordinates within our galaxy bubble, we may be close to the edge of the bubble(old), or we may be near the more chaotic center(young). -Imagine our galaxy is planet earth, and our position within the galaxy is 200m below and in the center of Australia(fairly old), as the earth is kinda spherical too we look along its axis to find the edge.

Is dark matter the edge or oldest part of the galaxy?


Why, after burning up every element do stars turn themselfs to iron?.iron ain't so special or is not as exotic as others...why iron?

it's the most stable element