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Alex - Plasma


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Alex - Plasma

  2. 2. What is plasma? <ul><li>Plasma is the fourth state of matter. It is created when gas is heated to an extremely high temperature, high enough to separate the electrons from atoms. The electrons and the ions (atoms with electrons separated from them) move independently and when an electron and ion collide, the electron goes into an excited state. As the electron decays from this state, it releases a photon. Many of these collisions give plasma its luminescent glow. </li></ul>
  3. 4. What are some special properties of plasma? <ul><li>Plasma is the most common form of matter, it makes up 99% of the universe that we can see. Its temperature and densities vary greatly. Some lab created plasmas almost reach absolute zero in temperature, while some of the plasmas in stars reach a high of 10^9 Kelvin. This ability to vary its density and temperature makes it quite useful in our everyday lives. </li></ul>
  4. 5. Where can plasma be found in our everyday lives? <ul><li>Because plasmas are conductive, reactive to magnetic and electric fields, they are usable in numerous applications. They are used in light bulbs, to televisions, to computer monitors, to space shuttle thrusters. A lot of items we use on a day to day basis use plasma. Plasma is found in stars, lightning, nebulas. It also makes up the beautiful aurora in the north and south poles. </li></ul>
  5. 6. The End
  6. 7. Bibliography <ul><li>Perspectives on Plasma . 2004. 30 Jan 2009 < </li></ul>