/sci/ - Science & Math

yep. just keep it hot enough to be in a gaseous state and you can compress it that small no problem.

>>1727677
Before you say anything, OP, no you can not keep it in solid state while under infinite pressure. The pressure would cause it to heat up.

>>1727677
They say solids cannot be compressed.
What if you heated a cubic meter of some solid to gas, compressed it to one cubic centimeter, then let it solidify?
Durr.
Pressure causes gases to return to solid state, you fucking derp. Can't compress a gas to a volume smaller than the volume of the same mass of solid, I believe, without it turning back to solid, assuming the same temp is upheld.

If you compress any matter too much the electrons will come so close to the nucleus that the weak nuclear force overpowers the electromagnetic force; causing a nuclear reaction. The compression in the example isn't nearly enough for this however.

>>1727667

>can I compress the gold into the size of a golfball?

Sure

>If so, what are the side effects?

You will not have gold anymore, you will end up with some exotic matter

>will it stay like that or do I have to keep the pressure on it?

keep the pressure on it

>If the pressure disappears, will it explode?

yes

>>1727684

have you ever seen a phase diagram?

once you get over a certain temp no amount of pressure will cause the object to become a solid.

>>1727706 You will not have gold anymore, you will end up with some exotic matter

The densities and pressures required to create a fusion reaction with gold are nowhere near OPs example. Even the LHC can't push atoms together with that kind of energy. If you could fuse gold the exotic matter would have 158 Protons; that's forty more than Ununoctium.

>>1727732
Ok, So the nuclii would not fuse together. But still haveing nuclii so close together would still create a unstable exotic state.

>>1727747

not really. it is called a supercritical fluid and it is considered normal matter.

the iron at the earths core is almost twice as dense as iron at the surface. metals can take massive amounts of pressure and can be compressed under those pressures.

>>1727814
>implying the earth isn't hollow

>>1727777
cool

>>1727823

can't be, because gravity perfectly cancels out at all points inside a hollow spheroid. if the earth were hollow the space in the middle would be useless

>>1727706
Possibly, you might end up with the same matter that makes up neutron stars (where the gold ball is just one huge nucleus) or you might cause a singularity (black hole) to form because the gravitational pull from the center of the ball might be great enough to pull the outside closer to it until a black hole formed

>>1727667 here

If I remember I will do some calculations in the morning and post the results of what it would turn out to be

>>1727856

no no no

how many times does it need to be said ITT, 1000kg into a golf ball does not fuse or create degenerate matter or exotic matter of any kind. a ball of gold would be almost that dense in the core of the sun, and the sun isn't even close to messing with anything but hydrogen.

and creating neutron degenerate matter would require compressing it thousands of times smaller.

Gold (Au) would need 6,977 °C (7,250 K) @ 5,000 atm (510,000 kPa) I don't know what it would take to make Gold (Au) a supercritical fluid.

>1000kg gold
>he rich..

OK, so a golf ball roughly 2cm in radius would have a volume of 33.5cm^3, this would make the density of it around 29.84 kg/cm^3, this density is around 200 times more dense then the suns core, which is estimated to be around 150g/cm^3 but far less then the estimated density of a neutron star which is around 5.9x10^11 kg/cm^3

Yes the gold will compress.
It'll stay that way as long as you maintain the pressure.
Without pressure, it will expand explosively.

you will need a lot of energy, because you gave to push the electrons to close to eachother and that is against the pauli exclusion principle, so i think it's inpossible for normal matern but with a lot of energy you can get superdense mattern like in an neutron star

>>1727667
OP said that if he had an infinite pressure device, which implies infinite energy

Also, the radius of ball required to from a neutron star would be 7.4x10^-4 cm

>>1727706
>>1727747
you don't understand what "exotic" means.

If you can squeeze it down to about a trillionth of a picometer, it will retain its size, as it will become a black hole.

>>1729414
>this density is around 200 times more dense then the suns core

which is actually pretty cool because gold is pretty much exactly 200 times heavier than hydrogen.

>>1727679
Eh; as the pressure / temperature gradients go up in the Earth, the iron/nickel/silicon mixture turns semi-solid and then liquid in the mantle and outer core, but the pressure eventually comes to dominate, and the inner core is solid.

You can compress solids somewhat without much change of their physical properties (aside from microstructure). After so far though, you'll begin to compress them into degenerate matter. At some point under immense pressure it will become energetically favorable for electrons to bond to protons and form neutron degenerate matter - this happens with helium in the case of a neutron star.

>>1727667
Wow, how did I not notice that....... I feel like an idiot now

However, this means that the pressure may be great enough to form a fusion reaction between gold nuclei, and therefore form heavier nuclei which would fission into smaller ones again (which would fuse do the same thing again) until the whole thing was iron (iron is the most stable configuration for a nucleus)