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Plasma (physics) - Wikipedia
Plasma classification (types of plasma) | Plasma-Universe.com
Plasmas explained - Science Learning Hub
Plasma | Physics, State of Matter, & Facts | Britannica
DOE Explains...Plasma | Department of Energy
What is Plasma? | MIT Plasma Science and Fusion Center
Science Made Simple: What Is Plasma? - SciTechDaily
Introduction (Chapter 1) - Introduction to Plasma Physics