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 | 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.
States of Matter: Plasma - Live Science
2016年5月5日 · Plasma is a state of matter that is often thought of as a subset of gases, but the two states behave very differently. Like gases, plasmas have no fixed shape or volume, and are...
DOE Explains...Plasma | Department of Energy
In plasma, some of the electrons separate and become free from neutral atoms (atoms that have an equal number of protons and electrons and thus a neutral charge). The resulting free electrons makes plasma different from the other states of matter, where the …
Science Made Simple: What Is Plasma? - SciTechDaily
2024年5月22日 · Plasma is one of the four fundamental states of matter, alongside gases, liquids, and solids. While most people don’t think about plasma in their daily lives the way they think about other states of matter, plasma constitutes 99% of the visible matter in the universe.
Plasmas explained - Science Learning Hub
Plasma is the highest energy state of matter. It consists of a collection of free-moving electrons, positive ions and neutral particles. Although it is closely related to the gas phase in that it has no definite shape or volume, it does differ in a number of ways: Plasma has a …
Everything is plasma - Nature Physics
2016年5月3日 · A plasma is what you get if you heat matter until it breaks apart into a gas of charged particles. It is, perhaps, the ultimate many-body system, as long-range interactions make possible...
Plasma Science | Plasma and Fusion Research | MIT PSFC
A plasma is a gas so hot that its electrons and ions have been stripped away, forming a cloud of excited particles that emit light when they collide. 99.9% of the observable universe—stars, nebulae, comet tails—is glowing plasma. A bolt of lightning is plasma, as are neon signs and fluorescent lights.
Plasma - Center for Science Education
Plasma is one of the four common states of matter - solid, liquid, gas, and plasma. Plasma is an electrically charged gas. Because plasma particles have an electrical charge, they are affected by electrical and magnetic fields.
Characteristics Of Plasmas - Sciencing
2018年3月13日 · Plasmas are the "fourth state of matter," after the well-known solid, liquids and gases. While rare on Earth, plasma is abundant throughout the universe, holding nearly 99 percent of known matter. Stars, the edges of lightning …
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