Plasma (physics) - Wikipedia
Plasma (from Ancient Greek πλάσμα (plásma) 'moldable substance' [1]) is one of four fundamental states of matter (the other three being solid, liquid, and gas) characterized by the presence of a significant portion of charged particles in any combination of ions or electrons.
Plasma cosmology - Wikipedia
Plasma cosmology is a non-standard cosmology whose central postulate is that the dynamics of ionized gases and plasmas play important, if not dominant, roles in the physics of the universe at interstellar and intergalactic scales. [ 2 ][ 1 ] In contrast, the current observations and models of cosmologists and astrophysicists explain the formatio...
Introduction to Plasma Physics - Massachusetts Institute of ...
A solid undergraduate background in classical physics, electromagnetic theory including Maxwell's equations, and mathematical familiarity with partial differential equations and complex analysis are prerequisites.
The Plasma Universe
The Plasma Universe is a term coined by Nobel Laureate Hannes Alfvén to highlight the importance of plasma throughout the Universe. See how much you think you know about cosmic plasma below, and then check out our articles, images and the Plasma Universe Timeline.
Plasma | Physics, State of Matter, & Facts | Britannica
2024年10月30日 · Plasma, in physics, an electrically conducting medium in which there are roughly equal numbers of positively and negatively charged particles, produced when the atoms in a gas become ionized. It is sometimes referred to as the fourth state of matter, distinct from the solid, liquid, and gaseous states.
Fundamentals of Plasma Physics Definition of Plasma: A gas with an ionized fraction (n → i+ + e−). Depending on density, E and B fields, there can be many regimes. Collisions and the Mean Free Path (mfp) For a simple view of the mfp, consider two hard spheres (R1,R2) and look from sphere 2. Sphere 1 approaches at a relative speed c12. If ...
Simple definition: a quasi-neutral gas of charged particles showing collective behaviour. Collective behaviour: long range of Coulomb potential (1=r) leads to nonlocal influence of disturbances in equilibrium. Where are plasmas found? plasma accelerators and radiation sources!
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