Spitzer resistivity refers to the electrical resistivity of a plasma, which is a state of matter composed of charged particles including ions and electrons. It is named after physicist Lyman Spitzer, who developed the concept in the context of astrophysics and plasma physics. In a plasma, the motion of charged particles can be influenced by electric and magnetic fields, and Spitzer resistivity provides a measure of how these charged particles collide with each other, leading to energy dissipation and resistance to flow.
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