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There has been a lot of work done by putting materials in a diamond anvil, squashing them to tremendous pressures, heating them and seeing what happens.For just about everything apart from ice at normal pressures the melting point is increased as you increase the pressure - most things expand on melting and definitely boiling, so increased pressure tends to stabilise the denser form. Considering the pressure at the centre of the earth, it is certainly not a gas or a plasma.
from what I have read it seems that the earth core should be a contained ball of plasma. is this a possability?
thanks coldarc. Read Conquest of Cold, Zero Kelvin and chasing zero kelvin -273 C led to the 'tunneling microscope' Is Helium III cooled to almost zero kelvin, and surprisingly has crystal structure with 3 axis. Everything changes at 0 K. you may think this is odd but got a japanese cartoon dvd (Steam Boy) and the idea was that super hot morphs into super cold. A standing wave is just another way to describe phonons ordering synchronized behavior in atoms? The heat is disorder, the 2nd Law? Gravity is just an aspect of matter, not a force? Having trouble envisioning heat implosion. But am supporter of S W Carey expanding Earth. consider: deep mines have much greater heat than projected, so maybe earth is a fractal of the sun, itself a fractal of the universe. The sun's surface is an electrical phenomena, and perhaps just skin deep? Applying to to Earth, mantle MOHO may be hottest area?