DAVID PARKER / SCIENCE PHOTO LIBRARY DAVID PARKER / SCIENCE PHOTO LIBRARY
Plasma physics conceptual illustration. Plasmas are a collection of charged particles, both positive and negative that behave in a collective way because of attractive and repelling electric forces. A significant number of highly charged particles together make plasma electrically conductive so that it responds strongly to electromagnetic fields, and this property can be usefully employed in many modern technological devices, such as plasma televisions.
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