4 Static electricity

4.1 Electrical charges
        Video - The big bang theory - static electricity
        Video - Explanation of static electricity

4.2 Charge on the move
        How to light a bulb with a balloon.

4.3 Uses and dangers of static electricity
        Video - How does a photocopier work
        Video - Care taken when refueling an aircraft
        Video - The dangers of static when refueling
        Video - Brainiac dangers of static

4.4 Static issues