Reference Terms
from Wikipedia, the free encyclopedia

Phase (matter)

A phase is a set of states of a macroscopic physical system that have relatively uniform chemical composition and physical properties (i.e. density, crystal structure, index of refraction, and so forth).

The most familiar examples of phases are solids, liquids, and gases.

Less familiar phases include: plasmas and quark-gluon plasmas;

Bose-Einstein condensates and fermionic condensates; strange matter; liquid crystals; superfluids and supersolids; and the paramagnetic and ferromagnetic phases of magnetic materials.

Note:   The above text is excerpted from the Wikipedia article "Phase (matter)", which has been released under the GNU Free Documentation License.
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