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Author Topic: Sublimation and desublimation definiton  (Read 773 times)

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Shadow

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Sublimation and desublimation definiton
« on: February 26, 2013, 06:19:18 AM »

How is some phase transition defined as sublimation?
If something solid needs to become gaseous it needs to enter the state between those two, and that's liquid. I think that sublimation is a transition between solid and gas where the liquid is an intermediate that exist for a very short period. Is it true? If yes, how short the period is?
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Arkcon

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Re: Sublimation and desublimation definiton
« Reply #1 on: February 26, 2013, 06:32:56 AM »

How is some phase transition defined as sublimation?
If something solid needs to become gaseous it needs to enter the state between those two, and that's liquid. I think that sublimation is a transition between solid and gas where the liquid is an intermediate that exist for a very short period. Is it true? If yes, how short the period is?

No.  Sorry to be so blunt, but that's not the case.  When I was a kid, maybe I'd have figured something like you did.  But that is not a grownup explanation for the states of matter.  Look at this image I yanked from Wikipedia (also check the associated page, and others it links to:)  http://en.wikipedia.org/wiki/File:Phase-diag2.svg  You can see, there are many states of matter, and they depend on temperature and pressure.  Sure you could have some liquid around while a solid is subliming, that's doesn't change the the solid-gas transition.

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