Post by: puppypower on 10/03/2018 12:22:17
Water eh ?
It's like the best ever !...
Here's some.water.jpg (115.84 kB . 459x341 - viewed 47549 times)
luffley !
Say I had a big old load of water...about the size of our sun I guess it would be quite hot inside at the middle !...but the outside would not be so hot.......would it make a water star ?...
Some place somewhere there must be the most massive ball of water ever out there floating about....whajafink the mechanics of a star sized ball of water is like ?
Ta
Neil
Eau Water, Eau Water
Ewe Do No Falter
Ewe're There For Me
To Have A Dip
To Make Ice Pops
And To Sip
But Say Ewe Were
The Size Of Sun ?
How Would Ewe Be
Brightly Fun ?
Water is the second most abundant molecule is the universe behind only hydrogen; H2. Water is so common in the universe because water; H2O, is composed of the first and third most abundant atoms in the universe; H and O. Water is also composed of the first and second most abundant reactive elements in the universe. Helium is not reactive. Carbon monoxide; CO, follows behind water. COis compose of atoms 3 and 4 in abundance.
Water, as ice, is the most abundant solid material in the universe. This is due to the high melting point of water; 0C, due to hydrogen bonding. We can compare this to H2 with a mp of -259.2C, and CO with a mp of -205C. The net affect is water, as solid ice, is a major starting material for star formation. In other words, it is easier for gravity to form stars from a very common solid material, like ice, than it is for gravity to form stars from gaseous materials, like sublimed hydrogen or CO gas.
Water, as solid ice, also has a trick up its sleeve, that is critical to star formation. Liquid water will expand when it freezes to form ice. This is why ice cubes float on water. The net affect is as solid ice accumulates, via gravity, to form the foundation of a star, the pressure and work will eventually cause the core temperature to increase, until the ice changes phases back to liquid water. The result is a 10% reduction in volume. The following affect is what I like to call; Fusion Collapse.
Picture a large ball of ice, under pressure. The pressure does work and heats the core, until a hole appears in the center of the ball, due to the ice becoming liquid water which is 10% denser. The continued pressure well cause the solid ice to collapse into the liquid water hole, where further heating and melting occurs, causing the hole to constantly reappear. The result is a sudden chain reaction collapse onto center, as the liquid water phase propagates outwards. It would be like if the earth suddenly decreased its volume by 10%; drop and stop with a bang.
As the fusion collapse begins and starts to propagate, the continued heating of the core will cause the liquid water to undergo phase changes, from liquid to steam, from steam to super critical water; hydrothermal, from hydrothermal to super ionic, from superior ionic to ionic, from ionic to liquid metallic water, and from liquid metallic to solid metallic water, which has a density of about 3.5 grams/cm3. The collapse does not stop if the mass of the forming star is large enough to form metallic water.
Metallic solid water is composed of a fixed oxygen atom matrix, playing the role of the atoms of iron in metallic iron. Within this metallic oxygen matrix both electrons and hydrogen protons are mobile and can conduct electricity. The result is not so much the classic fusion conditions of just high pressure and temperature. This water scenario also has pressure dependent hydrogen proton and electron voltages and currents, sufficient to ignite limited hydrogen proton fusion flame.
Theoretically, for sustained fusion, there may need to be another phase transition stemming from metallic water. This transition will be the hydrogen of water separating into a metallic hydrogen phase, surrounded by a solid metallic oxygen phase. This is the basic hydrogen reactor, surrounded by a solid oxygen shield for containment. The electrons and some hydrogen move between the two phases.
Post by: Bored chemist on 10/03/2018 12:48:16
The pressure does workHow?
Post by: Bored chemist on 10/03/2018 12:52:51
due to the ice becoming liquid water which is 10% denserThe form of ice that we are used to seeing in our drinks is very unusual in that it contracts on melting.
The high pressure modifications of ice- the sort that would be present in the middle of big (say planet size or bigger) block of ice wouldn't do that, they would expend on melting.
As the fusion collapse begins and starts to propagateI presume you mean fusion in the sense of melting, rather than nuclear fusion.
the continued heating of the coreWhat causes this heating?