Specifications
Photoelectric disk demonstrationPhotoelectric disk demonstration ,This is our new creative series which used for junior middle school Innovation experimental ! new beautiful design and very eash to be used.
Boards by a number of about 2-3mm in diameter small bubbles composition, small bubbles is filled with low pressure gas. In the optical disc of small bubbles in different areas have different pressure gas filling, the glow discharge to emit light of different colors, forming a color glow discharge. An optical disc has a central up to several kV high voltage high voltage electrode. Usually due to cosmic rays, ultraviolet light, a small amount of neutral gas molecules are ionized to form positive and negative (i.e. plasma state) present in the gas. Optical disk energized after the center electrode voltages up to several thousand volts, positive and negative ions in the gas under the action of a strong electric field results in a rapid directional movement, the movement of these ions in collisions with other gas molecules to produce new ions, so that the number of ions greatly increased. As strong electric field and the gas and relatively thin, to obtain a sufficient kinetic energy to ions "break" the other neutral molecules, the formation of new ions. Ions, electrons and intermolecular collisions, often cause energy level transitions of electrons in atoms and excited energy level associated with a beautiful glow, a "glow discharge."
