Tuesday, September 30, 2008

What is Plasma Physics?

In physics and chemistry, plasma is an ionized gas, in which a certain proportion of electrons are free rather than being bound to an atom or molecule. The ability of the positive and negative charges to move somewhat independently makes the plasma electrically conductive so that it responds strongly to electromagnetic fields. Plasma therefore has properties quite unlike those of solids, liquids or gases and is considered to be a distinct state of matter. Plasma typically takes the form of neutral gas-like clouds (e.g. stars). The explanation of the example, star, is a massive, luminous ball of plasma.

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