[gmx-users] heat apears

Anton Feenstra feenstra at chem.vu.nl
Thu Dec 4 09:05:01 CET 2003


parinald at unsl.edu.ar wrote:

> Thank`s Anton and Nguyen:
>   I still have a little question, why the presure fluctuations 
> are "huge"? is not seems like unrealistic proceses?.

But it probably actually *is* realistic. We're just not accustomed
to thinking about the pressure of only a few tens of thousands of
molecules. It helps to realise the 'balance' between pressure and
density of a condensed phase system (e.g. any watery system). If the
density is only slightly off, say 0.1%, pressure will be way off,
say maybe a factor of 100, due to the intrisic low compressibility
of the medium.


-- 
Groetjes,

Anton
  _____________ _______________________________________________________
|             |                                                       |
|  _   _  ___,| K. Anton Feenstra                                     |
| / \ / \'| | | Dept. of Pharmacochem. - Vrije Universiteit Amsterdam |
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