Static electricity is electricity that occurs in bad- or non-conducting matter like many plastics. In these isolating materials an electrical charge can be induced by different types of actions. These actions that cause static-electricity are usually based upon friction between materials or seperation of materials. The static charge or static electricity does not move, hence the word static, and since it does not move or flow it is not possible to neutralize by means of earthing the material(connecting to earth). A static Voltage can exist between charged spots on the same material, the material and earth and the material and other material because of difference in the number of electrons and protons. This voltage can be measured. The static discharge of the material(spots) can often be seen and heard as a spark.