Definition of plasma

plasma: What is plasma?

Just as solids, liquids and gases are states of matter, plasma is a state of matter. Specifically, plasma is ionized gas. That is, gas that has been given an electrical charge by being stripped of electrons. Such ionized gas is the most abundant observable form of matter in the universe, being a main ingredient in stars and nebulas. And as if we're not already seeing enough of the stuff, it's also what goes inside those flat panel displays called "plasmas" that are popping up all around us. Why? Because when you apply an electromagnetic field to plasma, it glows, making for a nice, vibrant TV screen, computer monitor, or digital signage.

http://www.plasmas.org/rot-plasmas.htm

http://www.cranfield.ac.uk/sims/welding/research/plasma/plsphys.htm

Plasma is not to be confused with Liquid Crystals (LCDs) or Light Emitting Diodes (LEDs), which are wholly different technologies.

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