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To: spunkets

Phase change does not occur without ouside influence.

I've seen many pots of water, never seen one develop bubbles without heat being added.

Matter does not change phase without outside influence. Water does not phase to ice, without loss of heat, ice doesn't melt to liquid and then turn to gas without the addition of heat.

Nothing moves without being shoved.


184 posted on 04/02/2007 1:41:34 PM PDT by HamiltonJay
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To: HamiltonJay
"Phase change does not occur without ouside influence.

It always does. You need to know the science of the matter in order to make claims such as that.

"I've seen many pots of water, never seen one develop bubbles without heat being added.

You may see a pot of boiling water, but you neither know what it is about, nor do you understand it. It involves fluctuations in local density, which are akin to excited states in the medium. A phase change involves a discontinuity in the state of the medium where whole set of energy configuations chages abruptly.

The concept of adiabatic applies. That means the medium, such as water, is an isolated system. In this case, insulation would be the appropriate isolation. The only reason heat needs to be applied is to move the system to the critical point. That's the point where both phases are in equilibrium. If all conditions are right, separate phases can not be distinguished at all. If you place water in an isolated system, at the appropriate temp, it will boil continuously w/o stopping with no added heat. I could change the liquid to methylene chloride, place it in an enclosure, take it to the tropics and it would boil in that container endlessly, just sitting on a table. Note that there's absolutely no outside influence in that container of methylene chloride. The phase changes occur all by themselves.

The same thing happens with virtual photons popping out of a vacuum.

"Matter does not change phase without outside influence.

Then you can ahow that the decay of a neutron is due to an interaction with some external entity. Or that virtual photons are caused by an interaction with an external entity. Or, that bubbles in a pot of boiling water are caused by an external entity.

"Water does not phase to ice, without loss of heat, ice doesn't melt to liquid and then turn to gas without the addition of heat.

Water at the triple point is an equilibrium between all 3 phases. The moecules, will move between the phases as time passes.

"Nothing moves without being shoved.

You can not justify this statement, because you don't know the physics involved in reality. This universe appears as an adiabatic phase change.

185 posted on 04/02/2007 2:31:12 PM PDT by spunkets ("Freedom is about authority", Rudy Giuliani, gun grabber)
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