[MUD-Dev] Material state transformations

[Jason Murdick]

From: "Nicolai Hansen" <nic at aub.dk>
> From: "Yuri Bazhukov" <ybazhukov at ktl.ru>

>   - A solid state material can contain other materials (as keeping
>   them inside). Liquid or gaseous state materials can't.

Actually, liquids are almost always used as a medium for performing
chemical experiments. Water is frequently used as a medium for
suspending materials inside. Think the water you get out of your
faucet is pure H2O? I don't think so. Its got microscopic levels of
minerals and chemical compounds, put there both from the source and
by human hands (on purpose as in the case of fluoride or as a
by-product of the treatment process or for many other purposes).

>   - A gaseous state material can flow freely within its container
>   (and sometimes also freely out of it, but that's a bad container
>   for the material).

The law that governs this actually states that "A gas will expand
its volume indefinitely" or something along those lines. So a gas
will always expand and dillute itself until it reaches equilibrium
in the current space its given. A liquid will also expand to reach
equilibrium in its space, but it cannot change its volume while a
gas can.

>   - A liquid state material can flow freely within its container,
>   but only where gravity allows it (water can't flow upwards -
>   there's a few exceptions to this considering surface tensions
>   but lets not get into that)

Surface tension is not related to water flowing upwards. You
probably meant the miniscus (I think that's the term) that forms
around the edges of water and other liquids when they are put into a
container such as a beaker.

It should also be pointed out that some elements or compounds skip
the solid state of matter, they submlimate directly from a liquid to
a gas.  The most common of which is water.

My best suggestion would be to pick some of the properties you wish
to model and allow and then toss out the rest. There are FAR too
many chemical properties of elements and compounds to represent on a
mud and you could bog yourself down on minor issues for eternity.

- William Murdick
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