Funny, Last I read they think the inner core is solid...
The *inner core* of the Earth <http://en.wikipedia.org/wiki/Earth>, its innermost part, is a primarily solid <http://en.wikipedia.org/wiki/Solid> ball <http://en.wikipedia.org/wiki/Ball_(mathematics)> with a radius of about 1,220 km (760 mi), according to seismological studies<http://en.wikipedia.org/wiki/Seismology> .[1] <http://en.wikipedia.org/wiki/Inner_core#cite_note-1>[2]<http://en.wikipedia.org/wiki/Inner_core#cite_note-2> (This is about 70% of the length of the Moon <http://en.wikipedia.org/wiki/Moon>'s radius.) It is believed to consist primarily of an iron<http://en.wikipedia.org/wiki/Iron> –nickel <http://en.wikipedia.org/wiki/Nickel> alloy<http://en.wikipedia.org/wiki/Alloy>, and to be about the same temperature as the surface of the Sun<http://en.wikipedia.org/wiki/Sun>: approximately 5700 K <http://en.wikipedia.org/wiki/Kelvin>(5430 °C). So I guess we are both bucking the trend... You say solid, I say black hole On Mon, Jan 21, 2013 at 4:08 PM, Giovanni Santostasi <[email protected]>wrote: > Iron at the core of the earth is a plasma, so the hydrogen and helium at > the core of the sun. > Giovanni > > > > On Mon, Jan 21, 2013 at 3:07 PM, Giovanni Santostasi < > [email protected]> wrote: > >> These are plasmas, the electrons are taken away from the atoms and they >> are mixed with bare nuclei. You can compress a plasma to degenerate levels >> when quantum mechanics exclusion principle takes over. These densities are >> even more enormous. >> Giovanni >> >> >> >> On Mon, Jan 21, 2013 at 3:04 PM, ChemE Stewart <[email protected]>wrote: >> >>> Last time I checked most solids and liquids were >>> mostly "non-compressible", at least in our macro world. Liquid Water >>> density changes only 4% over a wide range >>> >>> >>> On Monday, January 21, 2013, Giovanni Santostasi wrote: >>> >>>> In fact, it is mostly hydrogen and helium. >>>> This to show that you can have iron at the core of earth with higher >>>> density that what iron has at atmospheric pressure. The density is >>>> determined by the pressure and temperature not just the type of material. >>>> When we quote densities of materials most often we mean at atmospheric >>>> pressure. >>>> Giovanni >>>> >>>> >>>> On Mon, Jan 21, 2013 at 2:57 PM, ChemE Stewart <[email protected]>wrote: >>>> >>>> Works for me, I never said it was iron >>>> >>>> >>>> On Monday, January 21, 2013, Giovanni Santostasi wrote: >>>> >>>> The sun core has a density 20 times higher than iron at atmospheric >>>> pressure. >>>> Giovanni >>>> >>>> >>>> On Mon, Jan 21, 2013 at 2:54 PM, ChemE Stewart <[email protected]>wrote: >>>> >>>> I have not calculated it yet, but I think it is a black hole with >>>> enough entropic gravitational pull to trigger fusion around it. >>>> >>>> Could you run that calc for me? >>>> >>>> >>>> On Monday, January 21, 2013, Giovanni Santostasi wrote: >>>> >>>> Chem, what is the density of the core of the sun? >>>> Plasma can be squeezed to ultra high density under high pressure. >>>> Giovanni >>>> >>>> On Mon, Jan 21, 2013 at 2:47 PM, ChemE Stewart <[email protected]>wrote: >>>> >>>> I was thinking a plasma was less dense. Maybe you meant a Bose >>>> Einstein condensate or something similar? >>>> >>>> *Plasma* is similar to a gas, in which a certain proportion of its >>>> particles are ionized. Gases contain molecules bonded with molecular >>>> bonds.In stars or in case of high temperatures, the molecular bonds of >>>> gases are dissociated & then due to high temperature it suffers further >>>> heating <http://wiki.answers.com/Q/Is_plasma_more_dense_than_gas#> & >>>> finally forms so called plasma. They have density about [1 part./meter cube >>>> -1032 part./meter >>>> cube<http://wiki.answers.com/Q/Is_plasma_more_dense_than_gas#> >>>> ]. >>>> >>>> >>>> >>>> >>>> On Mon, Jan 21, 2013 at 3:40 PM, Giovanni Santostasi < >>>> [email protected]> wrote: >>>> >>>> It is denser because the iron is in a plasma form under a lot of >>>> pressure, so it can be compacted. >>>> Giovanni >>>> >>>> >>>> >>>> On Mon, Jan 21, 2013 at 2:26 PM, ChemE Stewart <[email protected]>wrote: >>>> >>>> From You >>>> >>>> "Gravity was dominant force. People do simulations of this stuff and >>>> they work" >>>> >>>> >> >
