1  INTRODUCTION
All of us have the experience of seeing a spark or hearing a crackle when
we take off our synthetic clothes or sweater, particularly in dry weather Have you ever tried to find any explanation for this phenomenon Another
common example of electric discharge is the lightning that we see in the
sky during thunderstorms We also experience a sensation of an electric
shock either while opening the door of a car or holding the iron bar of a
bus after sliding from our seat