Plasma
Plasma is a type of gas that is composed of positive ions and free electrons. It is the fourth state of matter, after solid, liquid, and gas. Plasma is found in stars, lightning, and fluorescent lamps, and is used in a variety of applications, such as plasma cutting, plasma welding, and plasma displays. It is also used in medical treatments, such as plasma therapy.
History of Plasma
The term “plasma” was first used in 1928 by Irving Langmuir, an American chemist and physicist. He used the term to describe the ionized gas that was created when he passed an electric current through a gas. Since then, plasma has been studied extensively and is now used in a variety of applications.
Comparison of Plasma and Other States of Matter
| State of Matter | Particles | Energy |
|---|---|---|
| Solid | Atoms | Low |
| Liquid | Atoms | Medium |
| Gas | Atoms | High |
| Plasma | Ions and Electrons | Very High |
Summary
Plasma is a type of gas composed of positive ions and free electrons. It is the fourth state of matter, and is used in a variety of applications, such as plasma cutting, welding, and displays. It is also used in medical treatments, such as plasma therapy. For more information about plasma, you can visit websites such as PlasmaCutting.com and PlasmaTherapy.org.
See Also
- Ionization
- Electron
- Ion
- Electric Current
- Gas Discharge
- Plasma Cutting
- Plasma Welding
- Plasma Display
- Plasma Therapy
- Langmuir Probe
