wwjgd27
wwjgd27 t1_je7njji wrote
Reply to comment by Jon_Beveryman in Does the metal in the solid core of a rocky planet have any special properties? by VillagerNo4
FCC in the (111) planar direction is the same as HCP. We just call it something else but effectively it’s the same right?
wwjgd27 t1_je7jaw0 wrote
Reply to comment by Jon_Beveryman in Does the metal in the solid core of a rocky planet have any special properties? by VillagerNo4
13 GPa of pressure is ridiculous compared to the 600 or so degrees Celsius required to get the same phase transformation. Temperature will always have a more pronounced effect than pressure in thermodynamics.
wwjgd27 t1_jdewitu wrote
Reply to comment by CrustalTrudger in Does the metal in the solid core of a rocky planet have any special properties? by VillagerNo4
Just a minor addition that pressure has a minor effect on the thermodynamic state function when compared to temperature so the crystal phase of the inner core shouldn’t be much different than that of what we see at the surface. We need to start talking about neutron star densities to see a pronounced effect!
wwjgd27 t1_it6qgth wrote
Reply to comment by ExtremeUVC in A new study has comprehensively analyzed DNA sequences from ancient Neanderthals occupying a remote region of southern Siberia. The findings offer a rare insight into Neanderthal family life. by molrose96
If you go far back enough literally everyone is mixed.
wwjgd27 t1_je8nghy wrote
Reply to comment by Jon_Beveryman in Does the metal in the solid core of a rocky planet have any special properties? by VillagerNo4
I thought ABAB stacking was for graphite and other graphitic structures since each stack of graphene is missing a carbon atom at the center of the hexagonal rings which would give it the symmetry allowing for ABCABC stacking in both HCP (0001) planes and FCC (111) planes? Interesting conversation by the way!