MadSci Network: Physics

Re: Is Plasma still considered a fourth state of matter?

Area: Physics
Posted By: Georg Hager, Grad student Theorie III
Date: Wed Sep 24 09:07:32 1997
Area of science: Physics
ID: 874529764.Ph

Dear Ebrahim!

Plasma is sometimes referred to as a `fourth state of matter' because it does not quite behave like matter in gaseous, liquid or solid form. But this is just a name somebody has invented -- nobody has ever determined that there should be ``exactly three states of matter'' or something like that, so one cannot say that plasma is ``considered'' as the fourth state of matter.

To learn more about plasmas in general, I recommend using the search facility in the MAD.SCI archive (just type `plasma' as a search term) -- you'll get a lot of hits. This site is also a good anchor for a web session about plasmas.


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