Date: 1993 - 1999
I need help on a student's question. We were discussing the states
of matter and when we came to plasma I did not have a good answer for what
plasma is other than it is found in the stars and does not occur on
Earth. Can you give me more info on this subject?
Plasmas are often called the fourth state of matter and can be found on
earth in lightening and laboratories as well as theextreme upper atmosphere.
Although like a gas, plasmas behave slightly differently because they are
mixtures of positive ions and negative electrons; hence they respond to electrom agnetic fields.
John (e-mail hawley)
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Update: June 2012