There is a outer core that is molten and the inner core that is solid. Giovanni
On Mon, Jan 21, 2013 at 3:14 PM, ChemE Stewart <cheme...@gmail.com> wrote: > 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_%28mathematics%29> 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 < > gsantost...@gmail.com> 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 < >> gsantost...@gmail.com> 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 <cheme...@gmail.com>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 <cheme...@gmail.com>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 <cheme...@gmail.com>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 <cheme...@gmail.com>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 < >>>>> gsantost...@gmail.com> 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 <cheme...@gmail.com>wrote: >>>>> >>>>> From You >>>>> >>>>> "Gravity was dominant force. People do simulations of this stuff and >>>>> they work" >>>>> >>>>> >>> >> >
