Danny's+Project+Chapter+3

Plasma Basic Notes on Plasma Ionization Basic Applications of Plasma How Atoms Emmit Light Plasma in Neon signs Plasma in TVs
 * most stars are composed of plasma
 * plasmas respond to magnetic fields
 * certain particles in plasma are ionized
 * ionized means that the particles have their number of electrons are reduced or increased
 * ionization can be caused by a raise in temperature, high electrical conductivity
 * due to ionization positively charged ions and negatively charged electrons are removed from their nucleus and form plasma
 * Neon signs
 * Welding Torches
 * TVs
 * when the atoms collide with a free moving particle, the atom is excited
 * this makes the electrons in the atom have a higher energy level
 * once the atom is done exciting the electron goes back to its normal energy level releasing a photon which creates UV lights
 * when the electrons are stripped from their atoms, they need energy
 * they get this energy from colliding with another atom
 * when this collision occurs the abundance of energy created is displayed in light
 * our eyes are sensitive to most of the UV light spectrum so when the collison happens we only see the white light that is created
 * in plasma TVs, a CRT tube is put inside the screen
 * then a electron gun is used to fire free electrons into the CRT tube
 * once inside the tube, the electrons react with phosphurous atoms to create vibrant light and colors
 * to change colors and images, certain parts of the CRT tube have more or less electrons shot into them creating different intensities of light which cause different colorsC[[image:mrslagunasclass/Diamgram_for_CTR_tube.png]]

CRT tube TV(Old time TV's)

New Flat Screen TV's Websites [] [] [] []
 * Thousands of individual cells inside TV
 * Cells have different colors green, Blue and Red
 * When the screen wants to display a certain color or shape, it sends electricity to those cells in a fraction of a second
 * When the cells have electricity run through them the atoms are excited and then they release a photon equivalent to the color of the cell that atom was in
 * The TV lights up many different cells together to form all the colors they need
 * By adding more or less electricity to certain cells the TV can create many different intensities of the color of red, blue, and green